/* ═══════════════════════════════════════════════════════════════════════════════
   Aud-Lit — CSS дизайн-система
   Тёмная тема, glassmorphism, Inter font, микроанимации
   Спецификация: _spec/06_интерфейс/веб_интерфейс.md
   ═══════════════════════════════════════════════════════════════════════════════ */

/* ─── Токены ──────────────────────────────────────────────────────────────── */

:root {
    --bg-primary: #0f0f14;
    --bg-secondary: #1a1a24;
    --bg-tertiary: #252532;
    --bg-glass: rgba(26, 26, 36, 0.8);

    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #55556a;

    --accent: #6c5ce7;
    --accent-hover: #7c6cf7;
    --accent-glow: rgba(108, 92, 231, 0.25);

    --success: #2ed573;
    --success-bg: rgba(46, 213, 115, 0.12);
    --warning: #ffa502;
    --warning-bg: rgba(255, 165, 2, 0.12);
    --danger: #ff4757;
    --danger-bg: rgba(255, 71, 87, 0.12);
    --processing: #3498db;
    --processing-bg: rgba(52, 152, 219, 0.12);

    --border: rgba(255, 255, 255, 0.06);
    --border-focus: rgba(108, 92, 231, 0.5);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);

    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --content-width: 900px;
}

/* ─── Reset ───────────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Тонкий фоновый градиент */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(52, 152, 219, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

a { color: var(--accent); text-decoration: none; }
button { cursor: pointer; font-family: var(--font); }

/* ─── Header ──────────────────────────────────────────────────────────────── */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: rgba(15, 15, 20, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header__icon { font-size: 1.5rem; }

.header__title {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header__nav { display: flex; gap: 4px; }

/* ─── Tabs ────────────────────────────────────────────────────────────────── */

.tab-btn {
    padding: 8px 20px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.tab-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 12px var(--accent-glow);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── Main ────────────────────────────────────────────────────────────────── */

.main {
    position: relative;
    z-index: 1;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 32px 20px 64px;
}

/* ─── Upload Zone ─────────────────────────────────────────────────────────── */

.upload-zone {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    border: 2px dashed rgba(108, 92, 231, 0.3);
    border-radius: var(--radius-lg);
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(108, 92, 231, 0.08);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-2px);
}

.upload-zone.dragover {
    animation: pulse-border 1s infinite;
}

@keyframes pulse-border {
    0%, 100% { border-color: var(--accent); }
    50% { border-color: var(--accent-hover); box-shadow: 0 0 40px var(--accent-glow); }
}

.upload-zone.has-file {
    border-color: var(--success);
    border-style: solid;
}

.upload-zone__icon { font-size: 2.5rem; margin-bottom: 12px; }
.upload-zone__title { font-size: 1.1rem; font-weight: 600; margin-bottom: 4px; }
.upload-zone__subtitle { color: var(--text-secondary); font-size: 0.9rem; }
.upload-zone__formats { color: var(--text-muted); font-size: 0.8rem; margin-top: 12px; }

.upload-zone__file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.upload-zone__file-remove {
    background: none; border: none; color: var(--danger);
    font-size: 1rem; padding: 0 4px; cursor: pointer;
}

/* ─── Upload Fields ───────────────────────────────────────────────────────── */

.upload-fields {
    margin-top: 20px;
    padding: 24px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.upload-fields__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

/* ─── Fields ──────────────────────────────────────────────────────────────── */

.field { display: flex; flex-direction: column; gap: 6px; }
.field--small { min-width: 0; }

.field label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.field input,
.field select {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font);
    transition: var(--transition);
}

.field input:focus,
.field select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* ─── Tag Input ───────────────────────────────────────────────────────────── */

.tag-input-wrapper {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    min-height: 42px;
    transition: var(--transition);
}

.tag-input-wrapper:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.tag-input-wrapper input {
    flex: 1;
    min-width: 100px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.85rem;
    padding: 4px 0;
    outline: none;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    background: var(--accent-glow);
    color: var(--accent-hover);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    animation: chip-in 0.2s ease;
}

@keyframes chip-in {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.tag-chip__remove {
    background: none; border: none; color: inherit;
    font-size: 0.9rem; cursor: pointer; padding: 0 2px;
    opacity: 0.7; transition: var(--transition);
}

.tag-chip__remove:hover { opacity: 1; }

.tag-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 50;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    max-height: 160px;
    overflow-y: auto;
    display: none;
    box-shadow: var(--shadow);
}

.tag-suggestions.visible { display: block; }

.tag-suggestion {
    padding: 8px 14px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.tag-suggestion:hover {
    background: var(--bg-tertiary);
    color: var(--accent);
}

/* ─── Buttons ─────────────────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font);
    transition: var(--transition);
    user-select: none;
}

.btn:active { transform: scale(0.97); }

.btn--primary {
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    color: #fff;
    box-shadow: 0 2px 12px var(--accent-glow);
}

.btn--primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--accent-hover), #9b6cf6);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

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

.btn--outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn--outline:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.1);
}

.btn--danger {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(255, 71, 87, 0.2);
}

.btn--danger:hover {
    background: rgba(255, 71, 87, 0.2);
}

.btn--sm { padding: 6px 14px; font-size: 0.8rem; }

.btn--upload {
    margin-top: 16px;
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    justify-content: center;
}

/* ─── Stats Grid ──────────────────────────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 16px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-card__value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 6px;
}

.stat-card__label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card--pending .stat-card__value { color: var(--warning); }
.stat-card--completed .stat-card__value { color: var(--success); }
.stat-card--error .stat-card__value { color: var(--danger); }

/* ─── Section Title ───────────────────────────────────────────────────────── */

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.recent-section { margin-top: 32px; }

/* ─── Card List ───────────────────────────────────────────────────────────── */

.card-list { display: flex; flex-direction: column; gap: 12px; }

/* ─── Transcription Card ──────────────────────────────────────────────────── */

.card {
    padding: 18px 20px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    animation: card-in 0.3s ease backwards;
}

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

.card:hover {
    transform: translateY(-2px);
    border-color: rgba(108, 92, 231, 0.2);
    box-shadow: var(--shadow);
}

.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.card__title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 60%;
}

.card__status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.card__status--pending { background: var(--warning-bg); color: var(--warning); }
.card__status--processing { background: var(--processing-bg); color: var(--processing); }
.card__status--completed { background: var(--success-bg); color: var(--success); }
.card__status--error { background: var(--danger-bg); color: var(--danger); }

.card__status--processing::before {
    content: '';
    width: 8px; height: 8px;
    border-radius: 50%;
    border: 2px solid currentColor;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

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

.card__meta {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.card__meta span { display: flex; align-items: center; gap: 4px; }

.card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }

.card__tag {
    padding: 2px 8px;
    background: var(--accent-glow);
    color: var(--accent-hover);
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 500;
}

.card__preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ─── Empty State ─────────────────────────────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.empty-state__icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 12px;
}

/* ─── Transcriptions Tab ──────────────────────────────────────────────────── */

.transcriptions-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 16px;
}

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

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    flex: 1;
    max-width: 320px;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-box__icon { color: var(--text-muted); font-size: 0.9rem; }

.search-box input {
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font);
    outline: none;
    width: 100%;
}

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

/* ─── Filters ─────────────────────────────────────────────────────────────── */

.filters {
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

/* ─── Pagination ──────────────────────────────────────────────────────────── */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    padding: 16px 0;
}

.pagination__info {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ─── Modal ───────────────────────────────────────────────────────────────── */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: overlay-in 0.2s ease;
}

@keyframes overlay-in { from { opacity: 0; } to { opacity: 1; } }

.modal-overlay[hidden] { display: none; }

.modal {
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    animation: modal-in 0.3s ease;
}

@keyframes modal-in {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal__title {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal__close {
    background: none; border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.modal__close:hover { background: var(--bg-tertiary); color: var(--text-primary); }

.modal__body { padding: 24px; }

.modal__status {
    margin-bottom: 16px;
}

.modal__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.modal__tags { margin-bottom: 16px; }
.modal__tags label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.modal__field { margin-bottom: 16px; }
.modal__field label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.modal__title-edit {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font);
    transition: var(--transition);
}

.modal__title-edit:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.modal__audio {
    margin: 20px 0;
}

.modal__audio audio {
    width: 100%;
    border-radius: var(--radius-sm);
    outline: none;
}

.modal__text-section { margin-top: 16px; }

.modal__text-section h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.modal__text {
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    max-height: 300px;
    overflow-y: auto;
    line-height: 1.8;
    font-size: 0.9rem;
}

.modal__error {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--danger-bg);
    border: 1px solid rgba(255, 71, 87, 0.2);
    border-radius: var(--radius-sm);
    color: var(--danger);
    font-size: 0.85rem;
}

.modal__footer {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

/* ─── Toast ───────────────────────────────────────────────────────────────── */

.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column-reverse;
    gap: 10px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    font-size: 0.85rem;
    max-width: 350px;
    animation: toast-in 0.3s ease, toast-out 0.3s ease 3.7s forwards;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toast-out {
    from { opacity: 1; }
    to { opacity: 0; transform: translateY(10px); }
}

.toast--success { border-left: 3px solid var(--success); }
.toast--error   { border-left: 3px solid var(--danger); }
.toast--info    { border-left: 3px solid var(--processing); }

/* ─── Upload Progress ─────────────────────────────────────────────────────── */

.upload-progress {
    margin-top: 16px;
    display: none;
}

.upload-progress.active { display: block; }

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar__fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), #8b5cf6);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-bar__fill.indeterminate {
    width: 30%;
    animation: indeterminate 1.5s ease-in-out infinite;
}

@keyframes indeterminate {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

.upload-progress__text {
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
}

/* ─── Scrollbar ───────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
    }

    .main { padding: 20px 12px 48px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .upload-fields__row { grid-template-columns: 1fr; }

    .transcriptions-header { flex-direction: column; align-items: stretch; }

    .search-box { max-width: none; }

    .filter-row { grid-template-columns: repeat(2, 1fr); }

    .modal { width: 95%; border-radius: var(--radius-md); }

    .modal__footer { justify-content: stretch; }
    .modal__footer .btn { flex: 1; justify-content: center; }

    .card__header { flex-wrap: wrap; gap: 8px; }
    .card__title { max-width: 100%; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .stat-card { padding: 14px 10px; }
    .stat-card__value { font-size: 1.5rem; }
    .filter-row { grid-template-columns: 1fr; }
}