* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

.hidden {
    display: none !important;
}

:root {
    --app-max: 430px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --bg-primary: #121218;
    --bg-surface: #1a1a24;
    --bg-card: #1e1e2a;
    --bg-card-hover: #252534;
    --bg-inset: #15151f;
    --border: rgba(255, 255, 255, 0.06);
    --border-focus: #00d4ff;
    --text-primary: #eaeaf0;
    --text-secondary: #9a9ab0;
    --text-muted: #5a5a72;
    --neon-pink: #ff2d78;
    --neon-pink-dim: rgba(255, 45, 120, 0.5);
    --neon-blue: #00d4ff;
    --neon-blue-dim: rgba(0, 212, 255, 0.5);
    --neon-purple: #b44dff;
    --accent: var(--neon-blue);
    --accent-end: var(--neon-purple);
    --success: #34d399;
    --success-dark: #059669;
    --warn: #fbbf24;
    --orange: #fb923c;
    --danger: #f87171;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-pill: 100px;
    --neu-raised: 6px 6px 14px rgba(0, 0, 0, 0.45), -4px -4px 10px rgba(255, 255, 255, 0.04);
    --neu-pressed: inset 3px 3px 8px rgba(0, 0, 0, 0.5), inset -2px -2px 6px rgba(255, 255, 255, 0.03);
    --neu-raised-sm: 3px 3px 8px rgba(0, 0, 0, 0.35), -2px -2px 6px rgba(255, 255, 255, 0.03);
    --glow-pink: 0 0 20px rgba(255, 45, 120, 0.25);
    --glow-blue: 0 0 20px rgba(0, 212, 255, 0.25);
    --transition: 0.2s ease;
    --nav-height: 68px;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

.app-shell {
    max-width: var(--app-max);
    margin: 0 auto;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

.app-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    padding-top: calc(14px + var(--safe-top));
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    z-index: 10;
    box-shadow: var(--neu-raised-sm);
}

.app-title-link {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.app-title-img {
    height: 28px;
    width: auto;
    display: block;
}

.energy-indicator {
    display: flex;
    align-items: center;
    gap: 5px;
    background: var(--bg-elevated);
    padding: 5px 12px 5px 8px;
    border-radius: 20px;
    box-shadow: var(--shadow-raised);
}

.energy-heart {
    flex-shrink: 0;
    transition: transform 0.2s;
}

.energy-indicator.pulse .energy-heart {
    animation: heartPulse 0.4s ease-out;
}

@keyframes heartPulse {
    0% { transform: scale(1); }
    30% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.energy-count {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    min-width: 18px;
    text-align: center;
}

.energy-indicator.energy-low .energy-count {
    color: #ff6b6b;
}

.energy-indicator.energy-low .energy-heart {
    fill: #ff6b6b;
}

.energy-indicator.energy-premium .energy-heart {
    fill: #ffd700;
}

.energy-indicator.energy-premium .energy-count {
    color: #ffd700;
    font-size: 16px;
}

.app-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px 16px 0;
    padding-bottom: calc(var(--nav-height) + 16px + var(--safe-bottom));
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

.page-panel.hidden {
    display: none;
}

.bottom-nav {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding-bottom: var(--safe-bottom);
    z-index: 20;
    height: calc(var(--nav-height) + var(--safe-bottom));
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.4);
}

.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 10px 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition);
    font-family: 'Inter', sans-serif;
    min-height: 48px;
}

.nav-btn:active {
    opacity: 0.7;
}

.nav-btn.active {
    color: var(--neon-blue);
}

.nav-btn.active .nav-icon {
    filter: drop-shadow(0 0 6px var(--neon-blue-dim));
}

.nav-icon {
    font-size: 1.2rem;
    line-height: 1;
    transition: filter var(--transition);
}

.nav-icon svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-label {
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}


.home-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.home-section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    padding-left: 2px;
}

.home-scroll-row {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.home-scroll-row::-webkit-scrollbar {
    display: none;
}

.album-card {
    flex-shrink: 0;
    width: 150px;
    scroll-snap-align: start;
    cursor: pointer;
    transition: transform var(--transition);
}

.album-card:active {
    transform: scale(0.96);
}

.album-art {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.6rem;
    margin-bottom: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--neu-raised);
}

.album-art-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
}

.album-art .art-count {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.65);
    color: var(--neon-blue);
    font-size: 0.58rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    text-shadow: 0 0 6px var(--neon-blue-dim);
    z-index: 1;
}

.album-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.album-artist {
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.album-emotion {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    margin-top: 4px;
    font-size: 0.62rem;
    color: var(--text-secondary);
    background: var(--bg-inset);
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    box-shadow: var(--neu-pressed);
}

.shuffle-toggle-wrap {
    display: flex;
    padding: 0;
}

.shuffle-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--bg-surface);
    color: var(--text-muted);
    box-shadow: var(--neu-raised);
    cursor: pointer;
    transition: all var(--transition);
}

.shuffle-toggle-btn.active {
    color: var(--neon-pink);
    box-shadow: var(--neu-pressed);
    background: var(--bg-inset);
}

.home-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    padding-left: 2px;
}

.home-section-header .home-section-title {
    margin-bottom: 0;
}

.plus-card {
    flex-shrink: 0;
    width: 150px;
    scroll-snap-align: start;
    cursor: pointer;
}

.plus-card-art {
    border: 2px dashed var(--text-muted);
    background: transparent !important;
    color: var(--text-muted);
    box-shadow: none !important;
    transition: all var(--transition);
}

.plus-card:hover .plus-card-art,
.plus-card:active .plus-card-art {
    border-color: var(--neon-blue);
    color: var(--neon-blue);
}

.plus-card-label {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
}

.plus-card.loading .plus-card-art {
    border-color: var(--neon-blue-dim);
}

.plus-card-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-muted);
    border-top-color: var(--neon-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes cardAppear {
    from { opacity: 0; transform: scale(0.85) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.card-appear {
    animation: cardAppear 0.35s ease-out;
}

.sub-tab-bar {
    display: flex;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    padding: 3px;
    margin-bottom: 14px;
    gap: 3px;
    box-shadow: var(--neu-pressed);
}


.sub-tab-btn {
    flex: 1;
    padding: 10px 0;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    min-height: 40px;
}

.sub-tab-btn.active {
    background: var(--bg-card);
    color: var(--neon-blue);
    font-weight: 600;
    box-shadow: var(--neu-raised-sm);
    text-shadow: 0 0 8px var(--neon-blue-dim);
}

.sub-tab-btn:active {
    opacity: 0.7;
}

.sub-tab-panel.hidden {
    display: none;
}

.input-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: var(--neu-raised);
}

.input-wrapper {
    position: relative;
    margin-bottom: 12px;
}

textarea {
    width: 100%;
    padding: 14px 38px 14px 14px;
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Noto Sans KR', sans-serif;
    resize: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    line-height: 1.5;
    box-shadow: var(--neu-pressed);
}

textarea:focus {
    outline: none;
    border-color: var(--neon-blue);
    box-shadow: var(--neu-pressed), 0 0 12px rgba(0, 212, 255, 0.15);
}

textarea::placeholder {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.clear-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
    line-height: 1;
}

.clear-btn:active {
    color: var(--neon-pink);
}

.language-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 7px 11px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    transition: all var(--transition);
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
    box-shadow: var(--neu-raised-sm);
}

.lang-btn:active {
    transform: scale(0.95);
}

.lang-btn.active {
    background: var(--bg-card);
    border-color: var(--neon-blue);
    color: var(--neon-blue);
    font-weight: 600;
    box-shadow: var(--glow-blue), var(--neu-raised-sm);
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.flag {
    font-size: 0.95rem;
}

.convert-btn {
    width: 100%;
    padding: 14px;
    background: var(--bg-card);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--radius-md);
    color: var(--neon-blue);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    box-shadow: var(--neu-raised);
    min-height: 48px;
    text-shadow: 0 0 10px var(--neon-blue-dim);
}

.convert-btn:active {
    transform: scale(0.98);
    box-shadow: var(--neu-pressed);
}

.convert-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.result-section {
    animation: fadeIn 0.3s ease;
}

.result-section.hidden {
    display: none;
}

.result-header {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    margin-bottom: 10px;
    box-shadow: var(--neu-raised);
}

.original-text,
.base-phonetic {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.base-phonetic {
    margin-bottom: 0;
}

.label {
    font-size: 0.7rem;
    color: var(--neon-blue);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 55px;
    flex-shrink: 0;
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.tts-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: all var(--transition);
    flex-shrink: 0;
    margin-left: auto;
    min-width: 40px;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--neu-raised-sm);
}

.tts-btn:active {
    transform: scale(0.92);
    box-shadow: var(--neu-pressed);
}

.tts-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.tts-btn.loading {
    animation: pulse 1.2s infinite;
}

.tts-btn.playing {
    color: var(--neon-blue);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--glow-blue);
}

.tts-btn.hidden {
    display: none;
}

.results-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    transition: all var(--transition);
    box-shadow: var(--neu-raised);
    animation: slideUp 0.3s ease forwards;
    opacity: 0;
}

.result-card:active {
    background: var(--bg-card-hover);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.card-flag {
    font-size: 1.3rem;
}

.card-lang-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.card-phonetic {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--neon-blue);
    line-height: 1.4;
    word-break: break-word;
    letter-spacing: 0.3px;
    unicode-bidi: plaintext;
    text-shadow: 0 0 14px var(--neon-blue-dim);
}

.card-phonetic[dir="rtl"] {
    direction: rtl;
    text-align: right;
    letter-spacing: 0.8px;
    font-size: 1.6rem;
}

.card-actions {
    display: flex;
    gap: 6px;
    margin-top: 10px;
}

.card-copy-btn,
.card-verify-btn {
    padding: 8px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    transition: all var(--transition);
    font-family: 'Inter', sans-serif;
    min-height: 36px;
    display: flex;
    align-items: center;
    box-shadow: var(--neu-raised-sm);
}

.card-copy-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
    color: var(--neon-blue);
}

.card-verify-btn {
    border-color: rgba(52, 211, 153, 0.15);
    color: var(--success);
}

.card-verify-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.card-verify-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.card-verify-btn.verifying {
    animation: pulse 1.2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.verify-result {
    margin-top: 10px;
    padding: 12px;
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    animation: fadeIn 0.25s ease;
    box-shadow: var(--neu-pressed);
}

.verify-error {
    color: var(--danger);
    font-size: 0.8rem;
}

.score-section {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.score-badge {
    font-size: 0.95rem;
    font-weight: 700;
    min-width: 44px;
    text-align: center;
}

.score-badge.score-high { color: var(--success); text-shadow: 0 0 8px rgba(52, 211, 153, 0.5); }
.score-badge.score-mid { color: var(--warn); }
.score-badge.score-low { color: var(--orange); }
.score-badge.score-fail { color: var(--danger); }

.score-bar {
    flex: 1;
    height: 5px;
    background: var(--bg-inset);
    border-radius: 3px;
    overflow: hidden;
    box-shadow: var(--neu-pressed);
}

.score-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

.score-fill.score-high { background: var(--success); box-shadow: 0 0 8px rgba(52, 211, 153, 0.4); }
.score-fill.score-mid { background: var(--warn); }
.score-fill.score-low { background: var(--orange); }
.score-fill.score-fail { background: var(--danger); }

.verify-back-translation {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.verify-label {
    color: var(--neon-blue);
    font-weight: 600;
    font-size: 0.72rem;
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.verify-feedback {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 3px;
}

.verify-detail {
    font-size: 0.72rem;
    color: var(--text-muted);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card:nth-child(1) { animation-delay: 0.03s; }
.result-card:nth-child(2) { animation-delay: 0.06s; }
.result-card:nth-child(3) { animation-delay: 0.09s; }
.result-card:nth-child(4) { animation-delay: 0.12s; }
.result-card:nth-child(5) { animation-delay: 0.15s; }
.result-card:nth-child(6) { animation-delay: 0.18s; }
.result-card:nth-child(7) { animation-delay: 0.21s; }
.result-card:nth-child(8) { animation-delay: 0.24s; }
.result-card:nth-child(9) { animation-delay: 0.27s; }
.result-card:nth-child(10) { animation-delay: 0.3s; }

.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 130px);
    max-height: calc(100dvh - 130px);
    margin-bottom: calc(-1 * (var(--nav-height) + 16px));
}

.star-select-screen {
    flex: 1;
    overflow-y: auto;
    padding: 4px 0 20px;
    -webkit-overflow-scrolling: touch;
}

.star-select-screen.hidden {
    display: none;
}

.chat-active-screen {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.chat-active-screen.hidden {
    display: none;
}

.star-select-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 18px;
    padding-top: 8px;
}

.star-section-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--neon-pink);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 10px;
    margin-top: 6px;
    padding-left: 2px;
    text-shadow: 0 0 8px var(--neon-pink-dim);
}

.star-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.star-grid::-webkit-scrollbar {
    display: none;
}

.star-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 8px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    text-align: center;
    flex-shrink: 0;
    width: 88px;
    scroll-snap-align: start;
}

.star-card:active {
    transform: scale(0.94);
    border-color: var(--neon-pink);
    box-shadow: var(--glow-pink);
}

.star-card-photo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
}

.star-card-photo::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,45,120,0.4);
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-blue)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    opacity: 0.6;
    transition: opacity var(--transition);
}

.star-card:active .star-card-photo::after {
    opacity: 1;
}

.star-card-photo img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.star-card-photo .star-initial {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-pink-dim), var(--neon-blue-dim, rgba(0,212,255,0.15)));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.star-card-name {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.star-card-group {
    font-size: 0.55rem;
    color: var(--text-muted);
    line-height: 1;
}

.custom-star-section {
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.custom-star-input-wrap {
    display: flex;
    gap: 8px;
}

.custom-star-input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    outline: none;
    transition: border-color var(--transition);
}

.custom-star-input:focus {
    border-color: var(--neon-blue);
    box-shadow: 0 0 8px var(--neon-blue-dim);
}

.custom-star-input::placeholder {
    color: var(--text-muted);
}

.custom-star-btn {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 45, 120, 0.3);
    border-radius: var(--radius-pill);
    color: var(--neon-pink);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    white-space: nowrap;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    text-shadow: 0 0 6px var(--neon-pink-dim);
}

.custom-star-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.nickname-input-section {
    max-width: 320px;
    margin: 32px auto 0;
    padding: 0 16px;
}

.nickname-input-wrap {
    margin-bottom: 16px;
}

.nickname-subtitle {
    color: var(--text-dim);
    font-size: 0.82rem;
    text-align: center;
    margin: -8px 0 0;
    padding: 0 24px;
    line-height: 1.4;
}

.gender-select-row {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 14px;
}

.gender-btn {
    padding: 8px 24px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--neu-flat);
}

.gender-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: var(--neu-pressed);
}

.gender-btn:active {
    transform: scale(0.95);
}

.nickname-btn-row {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.nickname-back-btn {
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.nickname-back-btn:active {
    transform: scale(0.95);
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--neu-raised);
    margin-bottom: 8px;
    flex-shrink: 0;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
}

.chat-avatar::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    border: 1.5px solid transparent;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-blue)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    opacity: 0.7;
}

.chat-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.chat-avatar .star-initial {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--neon-pink-dim), rgba(0,212,255,0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chat-header-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.chat-bot-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chat-bot-status {
    font-size: 0.65rem;
    color: var(--neon-blue);
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.chat-change-star-btn {
    padding: 6px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 500;
    cursor: pointer;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
}

.chat-change-star-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
    color: var(--neon-pink);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px 4px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

.chat-bubble-wrap {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    animation: fadeIn 0.3s ease;
}

.chat-bubble-wrap.user {
    align-self: flex-end;
    align-items: flex-end;
}

.chat-bubble-wrap.ai {
    align-self: flex-start;
    align-items: flex-start;
}

.chat-bubble {
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.85rem;
    line-height: 1.5;
    word-break: break-word;
}

.chat-bubble-wrap.user .chat-bubble {
    background: linear-gradient(135deg, var(--neon-pink), rgba(255, 45, 120, 0.7));
    color: #fff;
    border-bottom-right-radius: 4px;
    box-shadow: 0 2px 8px rgba(255, 45, 120, 0.2);
}

.chat-bubble-wrap.ai .chat-bubble {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
    box-shadow: var(--neu-raised-sm);
}

.chat-bubble .chat-translation {
    display: block;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

.chat-correction {
    margin-top: 6px;
    padding: 8px 10px;
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.chat-correction-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--success);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 3px;
}

.chat-correction-text {
    color: var(--success);
    font-weight: 500;
    margin-bottom: 4px;
}

.chat-correction-explain {
    color: var(--text-secondary);
    font-style: italic;
}

.chat-korean-tip {
    margin-top: 6px;
    padding: 8px 10px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.chat-korean-tip-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--neon-blue);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 3px;
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.chat-korean-tip-text {
    color: var(--neon-blue);
    font-weight: 600;
    font-size: 0.9rem;
    font-family: 'Noto Sans KR', sans-serif;
}

.chat-korean-tip-detail {
    color: var(--text-secondary);
    margin-top: 2px;
}

.chat-input-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 0 16px;
    flex-shrink: 0;
}

.chat-input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    outline: none;
    transition: border-color var(--transition);
}

.chat-input:focus {
    border-color: var(--neon-blue);
    box-shadow: 0 0 8px var(--neon-blue-dim);
}

.chat-input::placeholder {
    color: var(--text-muted);
}

.chat-send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
    border: none;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.25);
}

.chat-send-btn:active {
    transform: scale(0.92);
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.chat-typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 14px;
}

.chat-typing-dot {
    width: 6px;
    height: 6px;
    background: var(--neon-blue);
    border-radius: 50%;
    animation: chatTyping 1.4s infinite;
}

.chat-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.chat-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes chatTyping {
    0%, 60%, 100% { opacity: 0.3; transform: scale(0.8); }
    30% { opacity: 1; transform: scale(1); }
}



.gauge-text {
    fill: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
}

.source-tag {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 6px 0;
    flex-wrap: wrap;
}

.source-tag.hidden {
    display: none;
}

.source-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.2px;
}

.source-badge.kpop {
    background: rgba(255, 45, 120, 0.1);
    color: var(--neon-pink);
    border: 1px solid rgba(255, 45, 120, 0.2);
    text-shadow: 0 0 6px var(--neon-pink-dim);
}

.source-badge.drama {
    background: rgba(0, 212, 255, 0.1);
    color: var(--neon-blue);
    border: 1px solid rgba(0, 212, 255, 0.2);
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.emotion-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 3px 8px;
    border-radius: var(--radius-pill);
    font-size: 0.65rem;
    font-weight: 500;
    background: var(--bg-inset);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.sentence-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
}

.category-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.category-chip {
    padding: 6px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    box-shadow: var(--neu-raised-sm);
}

.category-chip:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.category-chip.active {
    background: var(--bg-card);
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    font-weight: 600;
    box-shadow: var(--glow-pink), var(--neu-raised-sm);
    text-shadow: 0 0 6px var(--neon-pink-dim);
}

.random-btn {
    width: 100%;
    padding: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    min-height: 44px;
    box-shadow: var(--neu-raised-sm);
}

.random-btn:active {
    transform: scale(0.98);
    box-shadow: var(--neu-pressed);
}

.sentences-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sentence-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    box-shadow: var(--neu-raised);
    animation: slideUp 0.3s ease forwards;
    opacity: 0;
}

.sentence-card:nth-child(1) { animation-delay: 0.02s; }
.sentence-card:nth-child(2) { animation-delay: 0.04s; }
.sentence-card:nth-child(3) { animation-delay: 0.06s; }
.sentence-card:nth-child(4) { animation-delay: 0.08s; }
.sentence-card:nth-child(5) { animation-delay: 0.1s; }
.sentence-card:nth-child(6) { animation-delay: 0.12s; }
.sentence-card:nth-child(7) { animation-delay: 0.14s; }
.sentence-card:nth-child(8) { animation-delay: 0.16s; }

.sentence-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 8px;
    font-family: 'Noto Sans KR', sans-serif;
}

.sentence-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.sentence-practice-btn {
    width: 100%;
    padding: 10px;
    background: var(--bg-surface);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--neon-blue);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    min-height: 40px;
    box-shadow: var(--neu-raised-sm);
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.sentence-practice-btn:active {
    transform: scale(0.98);
    box-shadow: var(--neu-pressed);
}


.placeholder-icon {
    font-size: 2.8rem;
    margin-bottom: 16px;
    filter: drop-shadow(0 0 10px var(--neon-blue-dim));
}

.placeholder-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.placeholder-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.profile-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px 30px;
    text-align: center;
}

.profile-avatar-container {
    position: relative;
    width: 90px;
    height: 90px;
    margin: 0 auto 16px;
}
.profile-avatar-container {
    position: relative;
    width: 90px;
    height: 90px;
    margin: 0 auto 16px;
}
.profile-avatar {
    width: 90px;
    height: 90px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    box-shadow: var(--neu-raised);
    border: 2px solid var(--border);
    position: relative;
    overflow: hidden;
}
.edit-profile-pic-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--neon-blue);
    border: 2px solid var(--bg-surface);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 2;
}
.profile-name-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 4px;
}
.edit-nickname-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: opacity 0.2s;
}
.edit-nickname-btn:hover { opacity: 1; }
.edit-profile-pic-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--neon-blue);
    border: 2px solid var(--bg-surface);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 2;
}
.profile-name-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 4px;
}
.edit-nickname-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: opacity 0.2s;
}
.edit-nickname-btn:hover { opacity: 1; }

.profile-avatar::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-blue)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
}

.profile-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.profile-status {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.auth-section {
    padding: 0 20px;
    margin-bottom: 16px;
}

.auth-google-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: var(--neu-raised-sm);
    transition: background 0.2s;
}

.auth-google-btn:active {
    background: var(--bg-card-hover);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 14px 0;
}

.auth-divider-line {
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-divider-text {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.auth-input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-inset);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.auth-input:focus {
    border-color: var(--neon-blue);
}

.auth-input::placeholder {
    color: var(--text-muted);
}

.auth-submit-btn {
    width: 100%;
    padding: 13px 20px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--neu-raised);
    transition: opacity 0.2s;
    margin-top: 2px;
}

.auth-submit-btn:active {
    opacity: 0.85;
}

.auth-toggle-text {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

.auth-toggle-text a {
    color: var(--neon-blue);
    text-decoration: none;
    font-weight: 500;
    margin-left: 4px;
}

.auth-error {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    background: rgba(255, 45, 120, 0.1);
    border: 1px solid rgba(255, 45, 120, 0.25);
    color: var(--neon-pink);
    font-size: 0.85rem;
    text-align: center;
}

.auth-user-section {
    padding: 0 20px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.auth-logout-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    box-shadow: var(--neu-raised-sm);
    transition: color 0.2s;
}

.auth-logout-btn:active {
    color: var(--neon-pink);
}

.profile-sub-badge {
    padding: 10px 20px;
    text-align: center;
}

.profile-sub-badge-premium {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.15), rgba(255, 180, 0, 0.08));
    border: 1px solid rgba(255, 215, 0, 0.35);
    color: #ffd700;
    font-size: 0.85rem;
    font-weight: 700;
}

.profile-sub-badge-premium svg {
    flex-shrink: 0;
}

.profile-sub-badge-free {
    display: inline-block;
}

.profile-sub-badge-free button {
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #b44dff 0%, #ff2d78 100%);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 3px 14px rgba(180, 77, 255, 0.25);
    transition: opacity 0.2s;
}

.profile-sub-badge-free button:active {
    opacity: 0.85;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding: 0 16px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    box-shadow: var(--neu-raised);
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue-dim);
}

.stat-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 500;
}

.profile-energy-section {
    margin: 0 16px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    box-shadow: var(--neu-raised);
}

.profile-energy-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.profile-energy-count {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--neon-blue);
}

.profile-energy-bar-track {
    height: 12px;
    background: var(--bg-inset);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 10px;
}

.profile-energy-bar-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 0.5s ease;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
}

.profile-energy-bar-fill.energy-low {
    background: linear-gradient(90deg, #f0a030, #e04060);
}

.profile-energy-bar-fill.energy-empty {
    background: #e04060;
}

.profile-energy-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.78rem;
    cursor: pointer;
    padding: 4px 0;
    transition: color 0.2s;
}

.profile-energy-toggle:hover {
    color: var(--text-secondary);
}

.profile-energy-toggle svg {
    transition: transform 0.2s;
}

.profile-energy-toggle.open svg {
    transform: rotate(180deg);
}

.profile-energy-details {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.profile-energy-details .usage-row {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.profile-energy-details .usage-row-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.profile-energy-details .usage-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.profile-energy-details .usage-count {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-weight: 600;
}

.profile-energy-details .usage-bar-track {
    height: 5px;
    background: var(--bg-inset);
    border-radius: 3px;
    overflow: hidden;
}

.profile-energy-details .usage-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s ease;
    background: var(--accent-purple);
}

.profile-bottom-cta {
    margin: 0 16px 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--neu-raised);
}

.profile-bottom-cta p {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

.premium-btn {
    background: linear-gradient(135deg, #b44dff 0%, #ff2d78 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 28px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(180, 77, 255, 0.3);
    transition: opacity 0.2s;
}

.premium-btn:active {
    opacity: 0.8;
}

.premium-cta-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.energy-cost-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-top: 12px;
}

.energy-cost-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6px 4px;
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    gap: 2px;
}

.ecc-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.2;
}

.ecc-cost {
    font-size: 0.75rem;
    font-weight: 700;
    color: #e94596;
}

.plan-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.plan-card {
    position: relative;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--neu-raised);
}

.plan-badge {
    position: absolute;
    top: -8px;
    left: 12px;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.plan-badge-trial {
    background: linear-gradient(135deg, #4ade80, #22c55e);
    color: #000;
}

.plan-badge-best {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #000;
}

.plan-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.plan-period {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.plan-renewal {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.sub-info-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sub-info-plan, .sub-info-expires {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sub-info-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.sub-info-value {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.plan-switch-btn {
    background: linear-gradient(135deg, #ffd700 0%, #ff8c00 100%);
    color: #1a1a2e;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 20px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: 4px;
    transition: opacity 0.2s;
}

.plan-switch-btn:hover {
    opacity: 0.9;
}

.plan-switch-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.upgrade-card {
    background: var(--neu-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--neu-shadow);
    padding: 14px 16px;
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    position: relative;
}

.upgrade-card .plan-price {
    font-size: 1.2rem;
    margin: 2px 0;
}

.upgrade-card .plan-btn {
    width: 100%;
    margin-top: 4px;
}

.sub-cancel-btn {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 9px 20px;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    margin-top: 2px;
    transition: color 0.2s, border-color 0.2s;
    width: 100%;
}

.sub-cancel-btn:hover {
    color: #ff4d6d;
    border-color: #ff4d6d;
}

.sub-cancel-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.sub-cancelled-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    background: rgba(255, 77, 109, 0.15);
    color: #ff4d6d;
    border: 1px solid rgba(255, 77, 109, 0.3);
    border-radius: 4px;
    padding: 1px 6px;
    margin-left: 6px;
    vertical-align: middle;
    letter-spacing: 0.02em;
}

.plan-btn {
    background: linear-gradient(135deg, #b44dff 0%, #ff2d78 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 20px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.2s;
}

.plan-btn:active {
    opacity: 0.8;
}

.plan-btn-best {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    color: #000;
}

.premium-info-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1.5px solid var(--neon-blue);
    background: transparent;
    color: var(--neon-blue);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    vertical-align: middle;
    margin-left: 4px;
    padding: 0;
    line-height: 1;
    transition: background 0.2s, color 0.2s;
}
.premium-info-btn:hover, .premium-info-btn:active {
    background: var(--neon-blue);
    color: var(--bg-primary);
}

.premium-benefits-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.78);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: popupFadeIn 0.2s ease;
}
.premium-benefits-popup {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: 28px 24px 24px;
    max-width: 360px;
    width: 100%;
    position: relative;
    box-shadow: var(--neu-raised);
}
.premium-benefits-popup h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--neon-blue);
    margin: 0 0 16px 0;
    text-align: center;
}
.premium-benefits-popup ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.premium-benefits-popup li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    color: var(--text-primary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.premium-benefits-popup li:last-child {
    border-bottom: none;
}
.premium-benefits-popup li::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    min-width: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-blue));
}
.premium-benefits-close {
    position: absolute;
    top: 10px;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}
.premium-benefits-close:hover {
    color: var(--text-primary);
}

.energy-popup-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.78);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: popupFadeIn 0.2s ease;
}

@keyframes popupFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.energy-popup-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: 32px 24px 24px;
    max-width: 360px;
    width: 100%;
    position: relative;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 60px rgba(233, 69, 150, 0.08);
    animation: popupCardIn 0.3s ease;
}

@keyframes popupCardIn {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}

.energy-popup-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.energy-popup-close:hover {
    background: var(--bg-card);
}

.energy-popup-text {
    font-size: 0.95rem;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.7;
    margin-bottom: 24px;
    padding: 0 4px;
}

.energy-popup-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #b44dff 0%, #ff2d78 100%);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(180, 77, 255, 0.3);
    transition: opacity 0.2s, transform 0.1s;
}

.energy-popup-btn:active {
    opacity: 0.85;
    transform: scale(0.98);
}

.energy-popup-btn svg {
    flex-shrink: 0;
}

.chat-saved-toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #1a2e1a 0%, #0f1e10 100%);
    border: 1px solid #4ade80;
    color: #a8e6a0;
    padding: 14px 22px;
    border-radius: var(--radius-lg);
    font-size: 0.84rem;
    z-index: 9999;
    max-width: 380px;
    text-align: center;
    line-height: 1.5;
    box-shadow: 0 4px 20px rgba(74, 222, 128, 0.2);
    animation: toastSlideUp 0.3s ease;
}

@keyframes toastSlideUp {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}


.stage-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.stage-placeholder.hidden {
    display: none;
}

.stage-view.hidden {
    display: none;
}

.stage-view {
    animation: fadeIn 0.4s ease;
}

.sentence-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 14px;
}

.sentence-nav.hidden {
    display: none;
}

.sent-nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s;
    box-shadow: var(--neu-raised);
}

.sent-nav-btn:active {
    box-shadow: var(--neu-pressed);
    transform: scale(0.93);
}

.sent-nav-pos {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: center;
    letter-spacing: 1px;
}

.stage-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.lyric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 32px 24px;
    text-align: center;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--neu-raised);
}

.lyric-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(0, 212, 255, 0.04) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(255, 45, 120, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.lyric-original {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 20px;
    font-family: 'Noto Sans KR', sans-serif;
    position: relative;
    z-index: 1;
}

.lyric-phonetic-wrap {
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.lyric-phonetic {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--neon-pink);
    text-shadow: 0 0 20px var(--neon-pink-dim), 0 0 40px rgba(255, 45, 120, 0.2);
    word-break: break-word;
    animation: fadeIn 0.5s ease;
    unicode-bidi: plaintext;
}

.lyric-phonetic[dir="rtl"] {
    direction: rtl;
    font-size: 2rem;
}

.lyric-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.lyric-loading.hidden {
    display: none;
}

.loading-dot {
    width: 10px;
    height: 10px;
    background: var(--neon-blue);
    border-radius: 50%;
    animation: dotBounce 1.4s infinite ease-in-out both;
    box-shadow: 0 0 8px var(--neon-blue-dim);
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }
.loading-dot:nth-child(3) { animation-delay: 0s; }

@keyframes dotBounce {
    0%, 80%, 100% { transform: scale(0.4); opacity: 0.3; }
    40% { transform: scale(1); opacity: 1; }
}

.lyric-lang-label {
    margin-top: 16px;
    font-size: 0.85rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.2px;
    position: relative;
    z-index: 1;
    min-height: 1.2em;
    font-style: italic;
}

.stage-actions {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 48px;
    padding: 8px 0 16px;
}

.stage-action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.stage-action-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    box-shadow: var(--neu-raised);
}

.stage-action-btn:active {
    transform: scale(0.92);
    box-shadow: var(--neu-pressed);
}

.stage-action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.listen-btn {
    background: var(--bg-card);
    color: var(--neon-blue);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.listen-btn.playing {
    color: var(--neon-blue);
    box-shadow: var(--glow-blue), var(--neu-raised);
    animation: pulse 1.5s infinite;
}

.listen-btn.loading {
    animation: pulse 1.2s infinite;
}

.record-btn {
    background: var(--bg-card);
    color: var(--neon-pink);
    border: 1px solid rgba(255, 45, 120, 0.15);
}

.record-btn.recording {
    color: var(--neon-pink);
    border-color: rgba(255, 45, 120, 0.4);
    box-shadow: var(--glow-pink), var(--neu-raised);
    animation: recordPulse 1.2s infinite;
}

@keyframes recordPulse {
    0%, 100% { box-shadow: var(--glow-pink), var(--neu-raised); }
    50% { box-shadow: 0 0 30px rgba(255, 45, 120, 0.35), var(--neu-raised); }
}

.stage-action-label {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
}

.recording-playback {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    animation: fadeIn 0.3s ease;
    box-shadow: var(--neu-raised-sm);
}

.recording-playback.hidden {
    display: none;
}

.playback-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.play-recording-btn {
    padding: 8px 16px;
    background: var(--bg-surface);
    border: 1px solid rgba(255, 45, 120, 0.2);
    border-radius: var(--radius-sm);
    color: var(--neon-pink);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', sans-serif;
    min-height: 36px;
    box-shadow: var(--neu-raised-sm);
}

.play-recording-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.stt-feedback {
    margin-top: 12px;
    animation: fadeIn 0.3s ease;
}

.stt-feedback.hidden {
    display: none;
}

.stt-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--neu-raised-sm);
}

.stt-loading-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-left: 6px;
}

.stt-result {
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--neu-raised);
    animation: scoreBounce 0.5s ease;
}

.stt-result.stt-high {
    border-color: rgba(0, 230, 118, 0.3);
}

.stt-result.stt-mid {
    border-color: rgba(255, 202, 40, 0.3);
}

.stt-result.stt-low {
    border-color: rgba(255, 45, 120, 0.3);
}

.stt-score-wrap {
    margin-bottom: 6px;
}

.stt-score {
    font-size: 2.8rem;
    font-weight: 800;
    font-family: 'Inter', sans-serif;
    animation: scoreBounce 0.5s ease;
}

.stt-high .stt-score {
    color: #00e676;
    text-shadow: 0 0 20px rgba(0, 230, 118, 0.4), 0 0 40px rgba(0, 230, 118, 0.15);
}

.stt-mid .stt-score {
    color: #ffca28;
    text-shadow: 0 0 20px rgba(255, 202, 40, 0.4), 0 0 40px rgba(255, 202, 40, 0.15);
}

.stt-low .stt-score {
    color: var(--neon-pink);
    text-shadow: 0 0 20px var(--neon-pink-dim), 0 0 40px rgba(255, 45, 120, 0.15);
}

.stt-match-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.stt-recognized {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.stt-recognized-label {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stt-recognized-text {
    font-size: 1rem;
    color: var(--text-primary);
    font-family: 'Noto Sans KR', sans-serif;
    font-weight: 500;
}

.stt-error {
    padding: 14px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 45, 120, 0.2);
    border-radius: var(--radius-md);
    color: var(--neon-pink);
    font-size: 0.82rem;
    text-align: center;
    box-shadow: var(--neu-raised-sm);
}

@keyframes scoreBounce {
    0% { transform: scale(0.5); opacity: 0; }
    60% { transform: scale(1.1); opacity: 1; }
    80% { transform: scale(0.95); }
    100% { transform: scale(1); }
}

.lang-select-section {
    margin: 0 16px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: var(--neu-raised);
}

.lang-select-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.lang-select {
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: 'Inter', sans-serif;
    padding: 8px 12px;
    min-width: 140px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239a9ab0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
    transition: border-color var(--transition);
    box-shadow: var(--neu-pressed);
}

.lang-select:focus {
    outline: none;
    border-color: var(--neon-blue);
}

.lang-select option {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.waveform-wrap {
    width: 100%;
    height: 80px;
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    animation: fadeIn 0.3s ease;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--neu-pressed);
}

.waveform-wrap.hidden {
    display: none;
}

.waveform-wrap.active {
    border-color: rgba(255, 45, 120, 0.3);
    box-shadow: var(--neu-pressed), 0 0 16px rgba(255, 45, 120, 0.1);
}

#waveformCanvas,
#talkWaveformCanvas {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: var(--radius-md);
}

.learning-mode-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lm-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: color var(--transition), text-shadow var(--transition);
    white-space: nowrap;
}

.lm-label.active {
    color: var(--neon-purple);
    text-shadow: 0 0 8px rgba(180, 77, 255, 0.5);
}

.lm-toggle-btn {
    width: 44px;
    height: 24px;
    background: var(--bg-inset);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    position: relative;
    transition: background var(--transition);
    padding: 0;
    box-shadow: var(--neu-pressed);
}

.lm-toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: var(--neon-purple);
    border-radius: 50%;
    transition: transform var(--transition), background var(--transition);
    pointer-events: none;
    box-shadow: 0 0 8px rgba(180, 77, 255, 0.4);
}

.lm-toggle-btn[data-mode="korean"] .lm-toggle-thumb {
    transform: translateX(20px);
    background: var(--neon-pink);
    box-shadow: 0 0 8px var(--neon-pink-dim);
}

.hangul-sub-tab-btn {
    flex: 1;
    padding: 10px 0;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    min-height: 40px;
}

.hangul-sub-tab-btn.active {
    background: var(--bg-card);
    color: var(--neon-purple);
    font-weight: 600;
    box-shadow: var(--neu-raised-sm);
    text-shadow: 0 0 8px rgba(180, 77, 255, 0.5);
}

.hangul-sub-tab-btn:active {
    opacity: 0.7;
}

.hangul-section-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.hangul-cat-btn {
    padding: 7px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    box-shadow: var(--neu-raised-sm);
}

.hangul-cat-btn:active {
    transform: scale(0.95);
}

.hangul-cat-btn.active {
    background: var(--bg-card);
    border-color: var(--neon-purple);
    color: var(--neon-purple);
    font-weight: 600;
    box-shadow: 0 0 12px rgba(180, 77, 255, 0.2), var(--neu-raised-sm);
    text-shadow: 0 0 6px rgba(180, 77, 255, 0.4);
}

.jamo-cards-container {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.jamo-cards-container::-webkit-scrollbar {
    display: none;
}

.jamo-card {
    flex-shrink: 0;
    width: 200px;
    scroll-snap-align: start;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    text-align: center;
    box-shadow: var(--neu-raised);
    animation: fadeIn 0.3s ease;
}

.jamo-char {
    font-size: 4rem;
    font-weight: 700;
    color: var(--neon-purple);
    text-shadow: 0 0 20px rgba(180, 77, 255, 0.4);
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.1;
    margin-bottom: 8px;
}

.jamo-name {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
    font-family: 'Noto Sans KR', sans-serif;
}

.jamo-roman {
    font-size: 0.75rem;
    color: var(--neon-blue);
    font-weight: 500;
    margin-bottom: 8px;
    text-shadow: 0 0 6px var(--neon-blue-dim);
}

.jamo-sound {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.jamo-example {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
    box-shadow: var(--neu-pressed);
}

.jamo-example-kr {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Noto Sans KR', sans-serif;
}

.jamo-example-meaning {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.jamo-listen-btn {
    margin-top: 10px;
    padding: 8px 20px;
    background: var(--bg-surface);
    border: 1px solid rgba(180, 77, 255, 0.3);
    border-radius: var(--radius-pill);
    color: var(--neon-purple);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', sans-serif;
    box-shadow: var(--neu-raised-sm);
}

.jamo-listen-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.hangul-keyboard-display {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
    margin-bottom: 12px;
}

.hangul-kb-row {
    display: flex;
    gap: 4px;
    justify-content: center;
}

.hangul-kb-key {
    width: 34px;
    height: 42px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    gap: 1px;
}

.hangul-kb-key:active {
    transform: scale(0.92);
    box-shadow: var(--neu-pressed);
    border-color: var(--neon-purple);
}

.hangul-kb-key-hangul {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--neon-purple);
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1;
}

.hangul-kb-key-qwerty {
    font-size: 0.5rem;
    color: var(--text-muted);
    line-height: 1;
}

.hangul-kb-guide {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.hangul-key-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid rgba(180, 77, 255, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: var(--neu-raised), 0 0 20px rgba(180, 77, 255, 0.15);
    animation: fadeIn 0.2s ease;
}

.hangul-key-preview.hidden {
    display: none;
}

.hangul-key-char {
    font-size: 3rem;
    font-weight: 700;
    color: var(--neon-purple);
    text-shadow: 0 0 16px rgba(180, 77, 255, 0.5);
    font-family: 'Noto Sans KR', sans-serif;
}

.hangul-key-name {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.hangul-kb-shift-wrap {
    display: flex;
    justify-content: center;
    margin-top: 6px;
    margin-bottom: 10px;
}

.hangul-shift-btn {
    padding: 8px 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', sans-serif;
    box-shadow: var(--neu-raised-sm);
}

.hangul-shift-btn.active {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    box-shadow: var(--glow-pink), var(--neu-raised-sm);
}

.hangul-shift-btn:active {
    transform: scale(0.95);
}

.hangul-type-output-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 12px;
    min-height: 80px;
    box-shadow: var(--neu-raised);
}

.hangul-type-output {
    font-size: 2rem;
    font-weight: 700;
    color: var(--neon-purple);
    text-shadow: 0 0 16px rgba(180, 77, 255, 0.3);
    font-family: 'Noto Sans KR', sans-serif;
    min-height: 2.5rem;
    word-break: break-all;
    line-height: 1.4;
}

.hangul-type-output:empty::before {
    content: attr(data-placeholder);
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 400;
}

.hangul-type-meaning {
    margin-top: 10px;
    padding: 10px;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    color: var(--text-secondary);
    box-shadow: var(--neu-pressed);
    animation: fadeIn 0.3s ease;
}

.hangul-type-meaning.hidden {
    display: none;
}

.hangul-type-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.hangul-type-action-btn {
    flex: 1;
    padding: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    min-height: 40px;
    box-shadow: var(--neu-raised-sm);
}

.hangul-type-action-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.hangul-type-clear {
    color: var(--danger);
    border-color: rgba(248, 113, 113, 0.2);
}

.hangul-type-kb {
    margin-top: 4px;
}

.hangul-type-bottom-row {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.hangul-type-bksp {
    flex: 0 0 60px;
}

.hangul-type-space {
    flex: 1;
}

.talkbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px 4px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

.talkbot-mic-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 12px 0 4px;
    flex-shrink: 0;
}

.talkbot-mic-btn {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    border: none;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 20px rgba(255, 45, 120, 0.3), var(--neu-raised);
}

.talkbot-mic-btn:active {
    transform: scale(0.92);
}

.talkbot-mic-btn.recording {
    animation: talkPulse 1.2s infinite;
    box-shadow: 0 0 30px rgba(255, 45, 120, 0.4), var(--neu-raised);
}

.talkbot-mic-btn.thinking {
    opacity: 0.6;
    cursor: not-allowed;
}

@keyframes talkPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(255, 45, 120, 0.3), var(--neu-raised); }
    50% { box-shadow: 0 0 40px rgba(255, 45, 120, 0.5), 0 0 60px rgba(180, 77, 255, 0.2), var(--neu-raised); }
}

.talkbot-mic-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.talkbot-waveform-wrap {
    width: 100%;
    height: 60px;
    background: var(--bg-inset);
    border: 1px solid rgba(255, 45, 120, 0.2);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--neu-pressed);
}

.talkbot-waveform-wrap.hidden {
    display: none;
}

.source-badge.trending {
    background: rgba(180, 77, 255, 0.1);
    color: var(--neon-purple);
    border: 1px solid rgba(180, 77, 255, 0.2);
    text-shadow: 0 0 6px rgba(180, 77, 255, 0.4);
}

.letters-progress-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    margin-bottom: 8px;
}

.letters-progress-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--neon-purple);
    min-width: 32px;
}

.letters-progress-track {
    flex: 1;
    height: 6px;
    background: var(--bg-inset);
    border-radius: 3px;
    box-shadow: var(--neu-pressed);
    overflow: hidden;
}

.letters-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-purple), var(--neon-pink));
    border-radius: 3px;
    transition: width 0.4s ease;
}

.letter-lesson-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--neu-raised);
    padding: 24px 16px;
    text-align: center;
    margin: 0 8px 12px;
}

.letter-char-big {
    font-size: 72px;
    font-weight: 700;
    color: var(--neon-purple);
    text-shadow: 0 0 20px rgba(180, 77, 255, 0.4);
    line-height: 1.1;
    margin-bottom: 4px;
}

.letter-name {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 2px;
}

.letter-roman {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.letter-listen-btn {
    background: var(--bg-card);
    border: 1px solid rgba(180, 77, 255, 0.3);
    border-radius: var(--radius-md);
    padding: 8px 20px;
    font-size: 1.2rem;
    color: var(--neon-purple);
    box-shadow: var(--neu-raised);
    cursor: pointer;
    margin-bottom: 14px;
}

.letter-listen-btn:active {
    box-shadow: var(--neu-pressed);
}

.letter-compare {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 8px 12px;
    background: rgba(180, 77, 255, 0.06);
    text-align: left;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
}

.letter-tip {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 8px;
    text-align: left;
}

.letter-example {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: left;
}

.letter-example .jamo-example-kr {
    color: var(--neon-purple);
    font-weight: 600;
    margin-right: 6px;
}

.letter-keyboard-section {
    margin: 0 8px 8px;
    text-align: center;
}

.letter-kb-prompt {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.letter-mini-kb .hangul-kb-key {
    transition: all 0.2s ease;
}

.letter-key-highlight {
    background: rgba(180, 77, 255, 0.25) !important;
    border-color: var(--neon-purple) !important;
    box-shadow: 0 0 12px rgba(180, 77, 255, 0.4), var(--neu-raised) !important;
    animation: letterKeyPulse 1.5s infinite;
}

@keyframes letterKeyPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(180, 77, 255, 0.3), var(--neu-raised); }
    50% { box-shadow: 0 0 18px rgba(180, 77, 255, 0.6), var(--neu-raised); }
}

.letter-key-dim {
    opacity: 0.35;
}

.letter-key-wrong {
    background: rgba(255, 60, 60, 0.3) !important;
    border-color: rgba(255, 60, 60, 0.5) !important;
}

.letter-key-result {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 6px;
}

.letter-key-check {
    font-size: 1.4rem;
    color: #4ade80;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(74, 222, 128, 0.5);
}

.letter-nav-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 8px;
}

.letter-nav-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--neu-raised);
    color: var(--text-primary);
    font-size: 1.1rem;
    padding: 8px 18px;
    cursor: pointer;
}

.letter-nav-btn:active {
    box-shadow: var(--neu-pressed);
}

.letter-counter {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

.letters-view-toggle {
    text-align: center;
    padding: 8px;
}

.letters-view-toggle-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--neu-raised);
    color: var(--neon-purple);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 8px 20px;
    cursor: pointer;
}

.jamo-card-mastered {
    border-color: rgba(74, 222, 128, 0.3) !important;
    position: relative;
}

.jamo-mastered-badge {
    position: absolute;
    top: 6px;
    right: 8px;
    color: #4ade80;
    font-size: 0.85rem;
    font-weight: 700;
}

.chip-bar-wrap {
    display: flex;
    align-items: center;
    gap: 4px;
    padding-right: 4px;
}

.chip-bar-wrap .words-chip-bar {
    flex: 1;
    min-width: 0;
}

.sent-target-row {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-right: 38px;
    padding-left: 38px;
}

.sent-target-row .hsent-target {
    text-align: center;
}

.target-next-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: none;
    background: var(--bg-surface);
    color: var(--neon-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--neu-raised);
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.target-next-btn:active {
    box-shadow: var(--neu-pressed);
    color: #fff;
    background: rgba(0, 245, 212, 0.15);
}

.words-source-header {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 6px 12px;
    background: rgba(180, 77, 255, 0.06);
    border-radius: var(--radius-sm);
    margin: 0 8px 8px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.words-chip-bar {
    display: flex;
    gap: 6px;
    padding: 4px 8px 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.words-chip-bar::-webkit-scrollbar {
    display: none;
}

.word-chip {
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 6px 14px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    cursor: pointer;
    box-shadow: var(--neu-raised);
    font-weight: 500;
}

.word-chip-active {
    background: rgba(180, 77, 255, 0.15);
    border-color: var(--neon-purple);
    color: var(--neon-purple);
    text-shadow: 0 0 6px rgba(180, 77, 255, 0.3);
}

.word-chip-done {
    background: rgba(74, 222, 128, 0.1);
    border-color: rgba(74, 222, 128, 0.4);
    color: #4ade80;
    text-shadow: 0 0 6px rgba(74, 222, 128, 0.3);
}

.word-chip-done.word-chip-active {
    background: rgba(74, 222, 128, 0.2);
    border-color: #4ade80;
}

.words-target-area {
    text-align: center;
    padding: 12px 8px 8px;
}

.words-target-composed {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 2px;
    text-shadow: 0 0 8px rgba(180, 77, 255, 0.2);
}

.words-target-word {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
    display: flex;
    justify-content: center;
    gap: 6px;
    flex-wrap: wrap;
}

.jamo-syllable-group {
    display: inline-flex;
    gap: 2px;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
}

.jamo-typed {
    color: #4ade80;
    text-shadow: 0 0 6px rgba(74, 222, 128, 0.4);
}

.jamo-next {
    color: var(--neon-purple);
    text-shadow: 0 0 10px rgba(180, 77, 255, 0.5);
    animation: jamoPulse 1.2s infinite;
}

.jamo-pending {
    color: var(--text-muted);
    opacity: 0.5;
}

@keyframes jamoPulse {
    0%, 100% { text-shadow: 0 0 6px rgba(180, 77, 255, 0.3); }
    50% { text-shadow: 0 0 16px rgba(180, 77, 255, 0.7); }
}

.words-target-phonetic {
    font-size: 0.85rem;
    color: var(--neon-purple);
    margin-bottom: 2px;
}

.words-target-meaning {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.words-match-result {
    text-align: center;
    padding: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    margin-top: 6px;
}

.words-match-correct {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
    text-shadow: 0 0 8px rgba(74, 222, 128, 0.4);
}

.hsent-target {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    letter-spacing: 0.5px;
}

.hsent-output {
    min-height: 40px;
    font-size: 1.1rem;
    letter-spacing: 0.3px;
}

.sent-char-correct {
    color: #4ade80;
}

.sent-char-wrong {
    color: #ff4444;
    text-decoration: underline;
}

.sent-char-extra {
    color: #ff8800;
    opacity: 0.7;
}

.hsent-score {
    text-align: center;
    padding: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    margin: 4px 8px;
}

.hsent-score-success {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
    text-shadow: 0 0 10px rgba(74, 222, 128, 0.4);
    box-shadow: var(--neu-raised);
}

.learn-browser {
    padding: 0;
}

.learn-content {
    padding: 8px 0;
}

.learn-sentence-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    margin: 8px 12px 12px;
    text-align: center;
    box-shadow: var(--neu-raised);
}

.learn-sentence-kr {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.learn-sentence-tr {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.grammar-loading {
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.shimmer-block {
    height: 60px;
    border-radius: var(--radius-md);
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-inset) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.shimmer-block.short {
    height: 40px;
    width: 70%;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.grammar-cards {
    padding: 0 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.grammar-sentence-diagram {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 14px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--neu-raised);
    justify-content: center;
}
.grammar-sentence-diagram .gsd-word {
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    border: 1.5px solid transparent;
}
.grammar-sentence-diagram .gsd-word:active {
    transform: scale(0.95);
}
.gsd-role-verb { background: rgba(0, 212, 255, 0.12); color: #00d4ff; border-color: rgba(0, 212, 255, 0.3) !important; }
.gsd-role-noun, .gsd-role-subject, .gsd-role-object { background: rgba(255, 45, 120, 0.12); color: #ff2d78; border-color: rgba(255, 45, 120, 0.3) !important; }
.gsd-role-particle, .gsd-role-marker { background: rgba(180, 77, 255, 0.12); color: #b44dff; border-color: rgba(180, 77, 255, 0.3) !important; }
.gsd-role-adjective, .gsd-role-adverb { background: rgba(52, 211, 153, 0.12); color: #34d399; border-color: rgba(52, 211, 153, 0.3) !important; }
.gsd-role-default { background: rgba(251, 191, 36, 0.12); color: #fbbf24; border-color: rgba(251, 191, 36, 0.3) !important; }

.grammar-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.grammar-section-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 6px;
    border-bottom: 2px solid transparent;
    border-image: linear-gradient(90deg, var(--neon-pink), var(--neon-blue), var(--neon-purple)) 1;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.grammar-section-title .gs-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}
.grammar-section-title .gs-icon svg {
    width: 16px;
    height: 16px;
}

.grammar-chevron {
    margin-left: auto;
    font-size: 0.9rem;
    color: var(--text-dim);
    transition: transform 0.25s ease;
}

.grammar-section.collapsed .grammar-chevron {
    transform: rotate(-90deg);
}

.grammar-section-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow: hidden;
    max-height: 3000px;
    transition: max-height 0.35s ease, opacity 0.25s ease;
    opacity: 1;
}

.grammar-section.collapsed .grammar-section-body {
    max-height: 0;
    opacity: 0;
    margin: 0;
}

.grammar-word-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    box-shadow: var(--neu-raised-sm);
    position: relative;
    overflow: hidden;
}
.grammar-word-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}
.grammar-word-card[data-role-color="verb"]::before { background: #00d4ff; }
.grammar-word-card[data-role-color="noun"]::before,
.grammar-word-card[data-role-color="subject"]::before,
.grammar-word-card[data-role-color="object"]::before { background: #ff2d78; }
.grammar-word-card[data-role-color="particle"]::before,
.grammar-word-card[data-role-color="marker"]::before { background: #b44dff; }
.grammar-word-card[data-role-color="adjective"]::before,
.grammar-word-card[data-role-color="adverb"]::before { background: #34d399; }
.grammar-word-card[data-role-color="default"]::before { background: #fbbf24; }

.gw-header {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
}

.gw-flow {
    display: flex;
    align-items: center;
    gap: 8px;
}
.gw-root {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 3px 10px;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    word-break: keep-all;
}
.gw-flow-arrow {
    color: var(--neon-blue);
    font-size: 0.85rem;
    flex-shrink: 0;
}
.gw-flow-arrow svg { width: 16px; height: 16px; }
.gw-word {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    word-break: keep-all;
}

.gw-role-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 3px 8px;
    border-radius: var(--radius-pill);
    align-self: flex-start;
}
.gw-role-badge[data-role-color="verb"] { background: rgba(0, 212, 255, 0.15); color: #00d4ff; }
.gw-role-badge[data-role-color="noun"],
.gw-role-badge[data-role-color="subject"],
.gw-role-badge[data-role-color="object"] { background: rgba(255, 45, 120, 0.15); color: #ff2d78; }
.gw-role-badge[data-role-color="particle"],
.gw-role-badge[data-role-color="marker"] { background: rgba(180, 77, 255, 0.15); color: #b44dff; }
.gw-role-badge[data-role-color="adjective"],
.gw-role-badge[data-role-color="adverb"] { background: rgba(52, 211, 153, 0.15); color: #34d399; }
.gw-role-badge[data-role-color="default"] { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }

.gw-meaning-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.08), transparent);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--neon-blue);
}
.gw-meaning-bar .gw-meaning-icon {
    font-size: 0.75rem;
    opacity: 0.7;
}

.gw-explain {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 8px 10px;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
}

.grammar-pattern-card {
    background: var(--bg-card);
    border: 1px solid rgba(180, 77, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: 0;
    box-shadow: var(--neu-raised-sm);
    overflow: hidden;
}

.gp-formula-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 14px;
    background: linear-gradient(135deg, rgba(180, 77, 255, 0.1), rgba(0, 212, 255, 0.06));
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--neon-purple);
    flex-wrap: wrap;
}
.gp-formula-bar .gp-eq { color: var(--neon-blue); font-size: 1.1rem; }

.gp-body {
    padding: 12px 14px;
}

.gp-meaning {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    padding-left: 10px;
    border-left: 3px solid var(--neon-blue);
}

.gp-comparison {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 10px;
    padding: 8px 10px;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
}

.gp-examples {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.gp-example {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.gp-example-num {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(180, 77, 255, 0.15);
    color: var(--neon-purple);
    font-size: 0.65rem;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

.grammar-pronun-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 45, 120, 0.15);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    box-shadow: var(--neu-raised-sm);
}

.gpr-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.gpr-from, .gpr-to {
    padding: 6px 14px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
}
.gpr-from {
    background: rgba(255, 45, 120, 0.1);
    color: #ff2d78;
    border: 1px solid rgba(255, 45, 120, 0.25);
}
.gpr-to {
    background: rgba(0, 212, 255, 0.1);
    color: #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.25);
}
.gpr-arrow {
    color: var(--text-dim);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
}
.gpr-arrow svg { width: 20px; height: 20px; }

.gpr-rule-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: rgba(255, 45, 120, 0.12);
    color: #ff2d78;
    margin-bottom: 8px;
}

.gpr-explain {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 8px 10px;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
}

.grammar-culture-card {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.06), rgba(180, 77, 255, 0.04));
    border: 1px solid rgba(251, 191, 36, 0.15);
    border-radius: var(--radius-lg);
    padding: 16px;
    box-shadow: var(--neu-raised-sm);
    position: relative;
}
.grammar-culture-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #fbbf24, #f59e0b);
    border-radius: 4px 0 0 4px;
}

.gc-note {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.7;
    padding-left: 8px;
}

.flow-next-btn {
    display: block;
    width: calc(100% - 24px);
    margin: 12px auto;
    padding: 12px;
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-pink) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(180, 77, 255, 0.25);
    transition: opacity 0.2s;
}

.flow-next-btn:active {
    opacity: 0.8;
}

.flow-back-btn {
    display: inline-block;
    padding: 10px 20px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--neu-small);
}

.flow-back-btn:active {
    opacity: 0.8;
}

.speak-flow-btns {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 12px 16px;
}

.speak-lyric-card {
    padding: 16px;
    margin-bottom: 0;
}

.onboarding-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
}

.onboarding-overlay.hidden {
    display: none !important;
}

.onboarding-container {
    width: 100%;
    max-width: var(--app-max);
    padding: 32px 20px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100dvh;
    justify-content: center;
}

.onboarding-logo-img {
    height: 48px;
    width: auto;
    display: block;
    margin: 0 auto 32px;
}

.onboarding-step {
    width: 100%;
    animation: obFadeIn 0.3s ease;
}

@keyframes obFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.onboarding-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 20px;
}

.onboarding-cards {
    display: flex;
    gap: 12px;
    width: 100%;
}

.onboarding-card {
    flex: 1;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.onboarding-card:active {
    transform: scale(0.97);
}

.onboarding-card.selected {
    border-color: var(--neon-blue);
    background: rgba(0, 212, 255, 0.08);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
}

.onboarding-card-icon {
    font-size: 24px;
    font-weight: 700;
    color: var(--neon-blue);
}

.onboarding-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.onboarding-card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.onboarding-star-section {
    width: 100%;
    max-height: 50vh;
    overflow-y: auto;
    padding: 4px 0;
}

.onboarding-section-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 12px 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.onboarding-star-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.onboarding-star-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.onboarding-star-card:active {
    transform: scale(0.95);
}

.onboarding-star-card.selected {
    border-color: var(--neon-pink);
    background: rgba(255, 45, 120, 0.08);
}

.onboarding-star-card .star-card-photo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--bg-inset);
    flex-shrink: 0;
}

.onboarding-star-card .star-card-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.onboarding-star-card .star-card-name {
    font-size: 11px;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.2;
    word-break: keep-all;
}

.onboarding-start-btn {
    width: 100%;
    max-width: 300px;
    padding: 14px 0;
    margin-top: 24px;
    border: none;
    border-radius: var(--radius-pill);
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    cursor: pointer;
    transition: all 0.2s ease;
    opacity: 1;
}

.onboarding-start-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.onboarding-start-btn:not(:disabled):active {
    transform: scale(0.97);
}

.chat-kb-toggle-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.65rem;
    font-weight: 700;
    font-family: 'Noto Sans KR', sans-serif;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    padding: 4px;
}

.chat-kb-toggle-btn svg {
    width: 22px;
    height: 17px;
    stroke: currentColor;
    fill: none;
}

.chat-kb-toggle-btn:active {
    transform: scale(0.92);
    box-shadow: var(--neu-pressed);
}

.chat-kb-toggle-btn.active {
    border-color: var(--neon-purple);
    color: var(--neon-purple);
    box-shadow: 0 0 12px rgba(180, 77, 255, 0.25), var(--neu-raised-sm);
    text-shadow: 0 0 8px rgba(180, 77, 255, 0.5);
}

.chat-hangul-keyboard {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 10px 8px 8px;
    flex-shrink: 0;
    animation: chatKbSlideUp 0.2s ease;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
}

.chat-hangul-keyboard.hidden {
    display: none;
}

@keyframes chatKbSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-kb-preview {
    text-align: center;
    min-height: 28px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--neon-purple);
    font-family: 'Noto Sans KR', sans-serif;
    text-shadow: 0 0 12px rgba(180, 77, 255, 0.4);
    margin-bottom: 6px;
    line-height: 28px;
}

.chat-kb-keys {
    display: flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
}

.chat-kb-keys .hangul-kb-row {
    display: flex;
    gap: 3px;
    justify-content: center;
}

.chat-kb-keys .hangul-kb-key {
    width: 30px;
    height: 38px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    gap: 1px;
}

.chat-kb-keys .hangul-kb-key:active {
    transform: scale(0.9);
    box-shadow: var(--neu-pressed);
    border-color: var(--neon-purple);
}

.chat-kb-keys .hangul-kb-key-hangul {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--neon-purple);
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1;
}

.chat-kb-keys .hangul-kb-key-qwerty {
    font-size: 0.45rem;
    color: var(--text-muted);
    line-height: 1;
}

.chat-kb-actions {
    display: flex;
    gap: 6px;
    margin-top: 6px;
    justify-content: center;
}

.chat-kb-action-btn {
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    min-height: 36px;
    box-shadow: var(--neu-raised-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-kb-action-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.chat-kb-shift {
    flex: 1;
    max-width: 90px;
}

.chat-kb-shift.active {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    box-shadow: var(--glow-pink), var(--neu-raised-sm);
}

.chat-kb-space {
    flex: 3;
}

.chat-kb-bksp {
    flex: 1;
    max-width: 60px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.star-select-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2px;
    margin-bottom: 4px;
}

.star-select-top-row .star-select-title {
    margin-bottom: 0;
    text-align: left;
}

.my-chats-btn {
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-pill);
    color: var(--neon-blue);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    text-shadow: 0 0 6px var(--neon-blue-dim);
    white-space: nowrap;
    flex-shrink: 0;
}

.my-chats-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
}

.chat-history-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding-top: 8px;
}

.chat-history-back-btn {
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
    flex-shrink: 0;
}

.chat-history-back-btn:active {
    transform: scale(0.95);
    box-shadow: var(--neu-pressed);
    color: var(--neon-blue);
}

.chat-history-header .star-select-title {
    margin-bottom: 0;
    padding-top: 0;
    text-align: left;
}

.chat-history-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 20px;
}

.chat-history-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--neu-raised);
    animation: slideUp 0.3s ease forwards;
    opacity: 0;
}

.chat-history-card:nth-child(1) { animation-delay: 0.03s; }
.chat-history-card:nth-child(2) { animation-delay: 0.06s; }
.chat-history-card:nth-child(3) { animation-delay: 0.09s; }
.chat-history-card:nth-child(4) { animation-delay: 0.12s; }
.chat-history-card:nth-child(5) { animation-delay: 0.15s; }
.chat-history-card:nth-child(6) { animation-delay: 0.18s; }
.chat-history-card:nth-child(7) { animation-delay: 0.21s; }
.chat-history-card:nth-child(8) { animation-delay: 0.24s; }

.chat-history-card:active {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.2);
}

.chat-history-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-pink-dim), rgba(0, 212, 255, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
    position: relative;
}

.chat-history-avatar::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    border: 1.5px solid transparent;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-blue)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    opacity: 0.5;
}

.chat-history-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.chat-history-nickname {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-history-preview {
    font-size: 0.72rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.chat-history-delete-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
    box-shadow: var(--neu-raised-sm);
}

.chat-history-delete-btn:active {
    transform: scale(0.9);
    box-shadow: var(--neu-pressed);
    color: var(--danger);
    border-color: rgba(248, 113, 113, 0.3);
}

.chat-history-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

.chat-history-empty.hidden {
    display: none;
}