/*RESET & BASE*/
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: 'DM Sans', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    transition: background-color 0.5s cubic-bezier(0.16, 1, 0.3, 1), color 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    width: 100%;
    position: relative;
    touch-action: pan-y;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    background: var(--bg-page);
}

/*TYPOGRAPHY VARIABLES*/
:root {
    --font-sans: 'DM Sans', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Syne', 'DM Sans', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --text-xs: clamp(0.625rem, 0.6rem + 0.15vw, 0.75rem);
    --text-sm: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-base: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --text-lg: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-xl: clamp(1.125rem, 1rem + 0.65vw, 1.25rem);
    --text-2xl: clamp(1.25rem, 1.1rem + 0.8vw, 1.5rem);
    --text-3xl: clamp(1.5rem, 1.3rem + 1.1vw, 1.875rem);
    --text-4xl: clamp(1.75rem, 1.5rem + 1.5vw, 2.25rem);
    --text-5xl: clamp(2rem, 1.7rem + 2vw, 2.75rem);
    --text-6xl: clamp(2.25rem, 1.9rem + 2.5vw, 3.25rem);

    --leading-tight: 1.15;
    --leading-snug: 1.3;
    --leading-normal: 1.5;
    --leading-relaxed: 1.6;
    --leading-loose: 1.75;

    --tracking-tight: -0.02em;
    --tracking-normal: -0.01em;
    --tracking-wide: 0.02em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.08em;

    --weight-light: 300;
    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
    --weight-extrabold: 800;

    --glass-bg: rgba(15, 23, 42, 0.55);
    --glass-bg-solid: rgba(15, 23, 42, 0.85);
    --glass-border: rgba(30, 41, 59, 0.35);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 2px 8px rgba(0, 0, 0, 0.1);
    --glass-shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(0, 0, 0, 0.15);
    --bg-page: #020617;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --input-bg: rgba(2, 6, 23, 0.6);
    --input-border: rgba(30, 41, 59, 0.5);
    --input-focus: rgba(59, 130, 246, 0.25);
    --kbd-bg: #1E293B;
    --kbd-color: #94A3B8;
    --kbd-border: #334155;
    --toast-bg: #0F172A;
    --toast-color: #F1F5F9;
}

body.light {
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-solid: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(226, 232, 240, 0.35);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.02);
    --glass-shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.02);
    --bg-page: #F1F5F9;
    --text-primary: #020617;
    --text-secondary: #475569;
    --input-bg: rgba(255, 255, 255, 0.7);
    --input-border: rgba(226, 232, 240, 0.5);
    --input-focus: rgba(59, 130, 246, 0.2);
    --kbd-bg: #E2E8F0;
    --kbd-color: #475569;
    --kbd-border: #CBD5E1;
    --toast-bg: #0F172A;
    --toast-color: #F1F5F9;
}

body.dark, body:not(.light) {
    --glass-bg: rgba(15, 23, 42, 0.55);
    --glass-bg-solid: rgba(15, 23, 42, 0.85);
    --glass-border: rgba(30, 41, 59, 0.35);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 2px 8px rgba(0, 0, 0, 0.1);
    --glass-shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(0, 0, 0, 0.15);
    --bg-page: #020617;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --input-bg: rgba(2, 6, 23, 0.6);
    --input-border: rgba(30, 41, 59, 0.5);
    --input-focus: rgba(59, 130, 246, 0.25);
    --kbd-bg: #1E293B;
    --kbd-color: #94A3B8;
    --kbd-border: #334155;
    --toast-bg: #0F172A;
    --toast-color: #F1F5F9;
}

/*TYPOGRAPHY UTILITY CLASSES*/
h1, h2, h3, h4, h5, h6, .heading {
    font-family: var(--font-display);
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-tight);
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); font-weight: var(--weight-extrabold); letter-spacing: -0.025em; }
h2 { font-size: var(--text-4xl); font-weight: var(--weight-bold); }
h3 { font-size: var(--text-3xl); font-weight: var(--weight-semibold); }
h4 { font-size: var(--text-2xl); font-weight: var(--weight-semibold); }
h5 { font-size: var(--text-xl); font-weight: var(--weight-semibold); }
h6 { font-size: var(--text-lg); font-weight: var(--weight-semibold); }

.body-large { font-size: var(--text-lg); line-height: var(--leading-relaxed); }
.body-base { font-size: var(--text-base); line-height: var(--leading-relaxed); }
.body-small { font-size: var(--text-sm); line-height: var(--leading-normal); }
.body-xs { font-size: var(--text-xs); line-height: var(--leading-normal); }

.label {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--text-secondary);
}
.caption {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: var(--leading-normal);
}

.font-mono, code, pre, kbd, .mono {
    font-family: var(--font-mono);
    font-weight: var(--weight-regular);
    letter-spacing: -0.01em;
}

code {
    font-size: 0.9em;
    padding: 0.1em 0.4em;
    border-radius: 6px;
    background: rgba(59, 130, 246, 0.08);
    color: var(--accent, #3B82F6);
}

pre {
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    padding: 1rem;
    border-radius: 12px;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

kbd, .kbd {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: 0.15rem 0.6rem;
    border-radius: 6px;
    border: 1px solid var(--kbd-border);
    background: var(--kbd-bg);
    color: var(--kbd-color);
    display: inline-block;
    font-weight: var(--weight-medium);
    line-height: 1.4;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

a {
    color: var(--accent, #3B82F6);
    text-decoration: none;
    font-weight: var(--weight-medium);
    transition: color 0.2s, opacity 0.2s;
}
a:hover {
    color: var(--accent-hover, #2563EB);
    text-decoration: underline;
}

/*SCROLLBAR*/
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.2);
    border-radius: 10px;
    transition: background 0.3s;
}
::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.4); }

/*GLASS CARD*/
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(1.2);
    -webkit-backdrop-filter: blur(24px) saturate(1.2);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--glass-shadow);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-card:hover {
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-2px);
}
.glass-card-solid {
    background: var(--glass-bg-solid);
    backdrop-filter: blur(24px) saturate(1.2);
    -webkit-backdrop-filter: blur(24px) saturate(1.2);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--glass-shadow);
}

/*GLASS INPUT*/
.glass-input {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 10px 16px;
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    font-weight: var(--weight-regular);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--text-primary);
    width: 100%;
    outline: none;
    line-height: 1.5;
    letter-spacing: -0.01em;
}
.glass-input:focus {
    border-color: #3B82F6;
    box-shadow: 0 0 0 4px var(--input-focus);
    transform: translateY(-1px);
}
.glass-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
    font-weight: var(--weight-regular);
}
.glass-input:hover { border-color: rgba(59, 130, 246, 0.3); }

/*GLASS TEXTAREA*/
.glass-textarea {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    font-weight: var(--weight-regular);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--text-primary);
    width: 100%;
    outline: none;
    resize: vertical;
    line-height: 1.7;
    min-height: 200px;
    max-height: 280px;
    letter-spacing: -0.01em;
}
.glass-textarea:focus {
    border-color: #3B82F6;
    box-shadow: 0 0 0 4px var(--input-focus);
    transform: translateY(-1px);
}
.glass-textarea::placeholder { color: var(--text-secondary); opacity: 0.5; }

/*BUTTONS*/
.btn-primary {
    background: #3B82F6;
    color: #fff;
    border: none;
    border-radius: 14px;
    padding: 12px 24px;
    font-weight: var(--weight-semibold);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.25);
    letter-spacing: -0.01em;
}
.btn-primary:hover {
    background: #2563EB;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.35);
}
.btn-primary:active { transform: translateY(0) scale(0.97); }
.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent 60%);
    pointer-events: none;
    border-radius: inherit;
}

.btn-ghost-glass {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 10px 18px;
    font-weight: var(--weight-medium);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    letter-spacing: -0.01em;
}
.btn-ghost-glass:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-1px);
}
.btn-ghost-glass:active { transform: scale(0.96); }

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.btn-icon:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-1px);
}
.btn-icon:active { transform: scale(0.93); }

.btn-icon-accent {
    background: #3B82F6;
    color: #fff;
    border: none;
    border-radius: 14px;
    width: 48px;
    height: 48px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}
.btn-icon-accent:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.4);
}
.btn-icon-accent:active { transform: scale(0.95); }

/*SEEK BAR*/
.seek-track {
    position: relative;
    height: 4px;
    border-radius: 4px;
    overflow: visible;
    background: rgba(148, 163, 184, 0.15);
    cursor: pointer;
}
.seek-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: linear-gradient(90deg, #3B82F6, #60A5FA);
    border-radius: 4px;
    pointer-events: none;
    transition: width 0.08s linear;
    z-index: 1;
}
.seek-bar {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 4px;
    cursor: pointer;
    background: transparent;
    position: relative;
    z-index: 2;
    width: 100%;
    outline: none;
}
.seek-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #3B82F6;
    cursor: pointer;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15), 0 2px 12px rgba(59, 130, 246, 0.3);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s;
}
.seek-bar::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.2), 0 4px 20px rgba(59, 130, 246, 0.35);
}
.seek-bar::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #3B82F6;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15), 0 2px 12px rgba(59, 130, 246, 0.3);
}

/*VOLUME BAR*/
.volume-bar {
    -webkit-appearance: none;
    appearance: none;
    height: 3px;
    border-radius: 4px;
    cursor: pointer;
    background: rgba(148, 163, 184, 0.2);
    transition: background 0.2s;
    width: 64px;
}
.volume-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #3B82F6;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.volume-bar::-webkit-slider-thumb:hover { transform: scale(1.2); }
.volume-bar::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #3B82F6;
    cursor: pointer;
    border: none;
}

/*DROP ZONE*/
.drop-zone {
    border: 2px dashed rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    background: var(--input-bg);
}
.drop-zone:hover {
    border-color: rgba(59, 130, 246, 0.4);
    background: rgba(59, 130, 246, 0.03);
    transform: translateY(-2px);
}
.drop-zone.drag-over {
    border-color: #3B82F6 !important;
    background: rgba(59, 130, 246, 0.06) !important;
    transform: scale(1.01);
}
.drop-zone .drop-icon { font-size: 36px; opacity: 0.5; transition: all 0.3s; }
.drop-zone:hover .drop-icon { opacity: 0.8; transform: scale(1.05); }

/*LYRIC LINES*/
.lyric-line {
    padding: 10px 14px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 12px;
    border-left: 3px solid transparent;
    background: transparent;
    letter-spacing: -0.01em;
}
.lyric-line:hover { background: rgba(59, 130, 246, 0.05); transform: translateX(4px); }
.lyric-line.active {
    background: rgba(59, 130, 246, 0.10);
    color: #3B82F6;
    font-weight: var(--weight-semibold);
    border-left-color: #3B82F6;
    transform: translateX(4px);
}
.lyric-line.has-timestamp { border-left-color: #3B82F6; }
.lyric-line.no-timestamp { opacity: 0.5; border-left-color: transparent; }

.timestamp-badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    background: rgba(59, 130, 246, 0.10);
    color: #3B82F6;
    border-radius: 6px;
    padding: 2px 10px;
    flex-shrink: 0;
    font-weight: var(--weight-medium);
    letter-spacing: 0.3px;
    transition: all 0.2s;
    line-height: 1.4;
}
.lyric-line.active .timestamp-badge { background: rgba(59, 130, 246, 0.18); }

/*PREVIEW PANE*/
.preview-pane {
    border-radius: 14px;
    padding: 16px 20px;
    border: 1px solid var(--glass-border);
    background: var(--input-bg);
    transition: all 0.4s;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.8;
    white-space: pre-wrap;
    word-break: break-all;
    overflow-y: auto;
    min-height: 120px;
    max-height: 220px;
    letter-spacing: -0.01em;
}
.preview-line {
    padding: 2px 0;
    transition: color 0.2s ease, font-weight 0.2s ease;
    font-weight: var(--weight-regular);
}
.preview-line.active-preview { color: #3B82F6; font-weight: var(--weight-semibold); }

/*TOAST*/
.toast {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 9999;
    padding: 14px 24px;
    border-radius: 16px;
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
    animation: slideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 380px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    font-weight: var(--weight-medium);
    letter-spacing: -0.01em;
}
.toast.success { border-left: 3px solid #22C55E; background: rgba(15, 23, 42, 0.9); color: #F1F5F9; }
.toast.error { border-left: 3px solid #EF4444; background: rgba(15, 23, 42, 0.9); color: #F1F5F9; }
.toast.info { border-left: 3px solid #3B82F6; background: rgba(15, 23, 42, 0.9); color: #F1F5F9; }
body.light .toast { background: rgba(255, 255, 255, 0.92); color: #020617; }
.toast.hiding { opacity: 0; transform: translateY(20px) scale(0.95); }

/*MODAL*/
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}
.modal {
    max-width: 520px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    border-radius: 24px;
    padding: 32px;
    animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    background: var(--glass-bg-solid);
    backdrop-filter: blur(32px) saturate(1.2);
    -webkit-backdrop-filter: blur(32px) saturate(1.2);
    border: 1px solid var(--glass-border);
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.3);
}
.modal h3 { font-family: var(--font-display); font-weight: var(--weight-bold); }

/*COOKIE BANNER*/
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 24px;
    right: 24px;
    max-width: 480px;
    z-index: 9998;
    padding: 20px 24px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg-solid);
    backdrop-filter: blur(32px) saturate(1.2);
    -webkit-backdrop-filter: blur(32px) saturate(1.2);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.5s ease;
}
.cookie-banner.hidden {
    transform: translateY(120%) scale(0.95);
    opacity: 0;
    pointer-events: none;
}
.cookie-banner .cookie-text {
    font-size: var(--text-sm);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: var(--weight-regular);
}
.cookie-banner .cookie-text a { color: #3B82F6; text-decoration: none; font-weight: var(--weight-medium); }
.cookie-banner .cookie-text a:hover { text-decoration: underline; }

/*WORD CHIPS*/
.word-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin: 3px 3px;
    border: 1px solid var(--glass-border);
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-weight: var(--weight-regular);
    letter-spacing: -0.01em;
}
.word-chip:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.25);
    transform: translateY(-2px) scale(1.02);
}
.word-chip.stamped {
    background: rgba(59, 130, 246, 0.14);
    border-color: #3B82F6;
    color: #3B82F6;
    font-weight: var(--weight-medium);
}
.word-chip .chip-time { font-family: var(--font-mono); font-size: var(--text-xs); opacity: 0.7; }

/*PROGRESS*/
.progress-bar {
    height: 3px;
    background: linear-gradient(90deg, #3B82F6, #60A5FA);
    transition: width 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 4px;
}

/*TOOLTIP*/
.tooltip { position: relative; }
.tooltip::after {
    content: attr(data-tip);
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) scale(0.9);
    white-space: nowrap;
    background: var(--toast-bg);
    color: var(--toast-color);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    padding: 4px 14px;
    border-radius: 8px;
    pointer-events: none;
    z-index: 100;
    font-family: var(--font-sans);
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--glass-border);
    letter-spacing: -0.01em;
}
.tooltip:hover::after { opacity: 1; transform: translateX(-50%) scale(1); }

/*HEADER*/
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(1.3);
    -webkit-backdrop-filter: blur(24px) saturate(1.3);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.app-header.scrolled {
    background: var(--glass-bg-solid);
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.06);
}
body.dark .app-header.scrolled { box-shadow: 0 4px 32px rgba(0, 0, 0, 0.3); }

.app-header .logo-text .brand-name {
    font-family: var(--font-display);
    font-weight: var(--weight-extrabold);
    font-size: var(--text-lg);
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
}
.app-header .logo-text .brand-tagline {
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    color: var(--text-secondary);
    letter-spacing: var(--tracking-normal);
}

/*FOOTER*/
.app-footer {
    border-top: 1px solid var(--glass-border);
    padding: 24px 20px;
    text-align: center;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-weight: var(--weight-regular);
    letter-spacing: -0.01em;
}

/*MOBILE MENU*/
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(2, 6, 23, 0.7);
    backdrop-filter: blur(32px) saturate(1.3);
    -webkit-backdrop-filter: blur(32px) saturate(1.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
body.light .mobile-menu { background: rgba(241, 245, 249, 0.85); }
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu .mobile-link {
    font-size: var(--text-2xl);
    font-weight: var(--weight-medium);
    color: var(--text-primary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 12px;
    transition: all 0.25s;
    font-family: var(--font-sans);
    letter-spacing: -0.01em;
}
.mobile-menu .mobile-link:hover { background: rgba(59, 130, 246, 0.08); }

/*SECTION TITLE*/
.section-title {
    font-family: var(--font-display);
    font-weight: var(--weight-bold);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-title .accent-line {
    width: 4px;
    height: 18px;
    border-radius: 4px;
    background: #3B82F6;
    flex-shrink: 0;
}

/*SELECT*/
.glass-select {
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 8px 12px;
    font-size: var(--text-sm);
    color: var(--text-primary);
    outline: none;
    cursor: pointer;
}