/* ============================================================
   Video Studio — Premium Dark Theme
   ============================================================ */

:root {
    --bg-deep: #030712;
    --bg-card: #0f172a;
    --bg-card-hover: #1a2332;
    --bg-input: #020617;
    --bg-scene: #0a0f1d;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;

    --accent: #818cf8;
    --accent2: #a78bfa;
    --accent-glow: rgba(129, 140, 248, 0.25);

    --green: #34d399;
    --green-dim: rgba(52, 211, 153, 0.15);
    --red: #f87171;
    --red-dim: rgba(248, 113, 113, 0.15);
    --orange: #fb923c;
    --orange-dim: rgba(251, 146, 60, 0.15);
    --cyan: #22d3ee;
    --cyan-dim: rgba(34, 211, 238, 0.15);
    --purple: #c084fc;
    --purple-dim: rgba(192, 132, 252, 0.15);
    --yellow: #fbbf24;

    --border: #1e293b;
    --border-light: #334155;
    --radius: 14px;
    --radius-sm: 8px;
    --radius-xs: 6px;

    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Cascadia Code', 'Consolas', monospace;

    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

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

/* ── Animated Background ── */
.bg-glow {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background:
        radial-gradient(ellipse 80% 60% at 20% 10%, rgba(129, 140, 248, 0.08), transparent),
        radial-gradient(ellipse 60% 50% at 80% 90%, rgba(192, 132, 252, 0.06), transparent),
        radial-gradient(ellipse 40% 40% at 50% 50%, rgba(34, 211, 238, 0.04), transparent);
    animation: bgPulse 8s ease-in-out infinite alternate;
}
@keyframes bgPulse {
    0% { opacity: 0.7; }
    100% { opacity: 1; }
}

.bg-grid {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 70%);
}

/* ── Container ── */
.container {
    position: relative; z-index: 1;
    width: 100%; max-width: 980px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

/* ── Header ── */
.header-inner {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 2.5rem;
    flex-wrap: wrap; gap: 1rem;
}

.logo {
    display: flex; align-items: center; gap: 0.85rem;
}
.logo-icon svg { width: 42px; height: 42px; display: block; }
.logo h1 {
    font-size: 1.6rem; font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}
.logo p { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

.btn-settings {
    display: flex; align-items: center; gap: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.6rem 1.1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem; font-weight: 500; font-family: var(--font);
    transition: all 0.25s;
}
.btn-settings:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: border-color 0.3s;
}
.card:hover { border-color: var(--border-light); }

.card-version {
    padding: 0.7rem 1.5rem;
    background: linear-gradient(135deg, rgba(129,140,248,0.06), rgba(192,132,252,0.06));
}

.card-head {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 1.25rem 1.5rem 0;
}
.card-head h2 { font-size: 1.15rem; font-weight: 700; }
.card-sub { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.15rem; }
.card-icon { font-size: 1.3rem; }
.card-badge {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff; font-size: 0.7rem; font-weight: 700;
    padding: 0.25rem 0.65rem; border-radius: 999px;
    letter-spacing: 0.04em;
}

/* ── AI Script Generator Card ── */
.card-ai-gen {
    border-left: 3px solid var(--yellow);
    background: linear-gradient(135deg, rgba(251,191,36,0.06), rgba(250,204,21,0.03));
}
.card-ai-gen .card-head h2 {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ai-gen-row {
    display: flex; gap: 0.85rem; align-items: flex-end;
}
.ai-gen-input {
    flex: 1; margin-bottom: 0 !important;
}
.ai-gen-input .form-control-lg {
    padding: 0.9rem 1.1rem;
    font-size: 1rem; font-weight: 500;
    border-color: var(--border-light);
    transition: all 0.25s;
}
.ai-gen-input .form-control-lg:focus {
    border-color: var(--yellow);
    box-shadow: 0 0 0 3px rgba(251,191,36,0.15);
}

.btn-ai-generate {
    display: flex; align-items: center; gap: 0.5rem;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    border: none;
    padding: 0.9rem 1.6rem;
    border-radius: var(--radius-xs);
    font-size: 0.95rem; font-weight: 700; font-family: var(--font);
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
    box-shadow: 0 4px 20px rgba(245,158,11,0.25);
    position: relative; overflow: hidden;
}
.btn-ai-generate::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.12) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}
.btn-ai-generate:hover::after { transform: translateX(100%); }
.btn-ai-generate:hover {
    box-shadow: 0 6px 30px rgba(245,158,11,0.4);
    transform: translateY(-1px);
}
.btn-ai-generate:active { transform: translateY(0) scale(0.97); }
.btn-ai-generate:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-ai-generate:disabled::after { display: none; }

.spinner-ai {
    width: 1.1rem; height: 1.1rem;
    border: 2.5px solid rgba(255,255,255,0.25);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.7s linear infinite;
}

.badge-ai {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    font-size: 0.65rem; font-weight: 700;
    padding: 0.15rem 0.5rem; border-radius: 999px;
    letter-spacing: 0.04em;
    margin-left: 0.4rem;
    vertical-align: middle;
}

/* ── TikTok Card ── */
.card-tiktok {
    border-left: 3px solid var(--purple);
    background: linear-gradient(135deg, rgba(192,132,252,0.04), rgba(236,72,153,0.03));
}
.card-tiktok .card-head h2 {
    background: linear-gradient(135deg, #c084fc, #ec4899);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.card-tiktok .card-sub code {
    background: rgba(192,132,252,0.12);
    color: var(--purple);
    padding: 0.12rem 0.4rem; border-radius: 4px;
    font-size: 0.72rem; font-family: var(--font-mono);
}

/* Larger form control variant */
.form-control-lg {
    padding: 0.85rem 1rem;
    font-size: 1rem; font-weight: 500;
}

.section-sub {
    font-size: 0.8rem; font-weight: 600; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.05em;
    margin: 1.25rem 0 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

/* Field hint (contextual help below section titles) */
.field-hint {
    font-size: 0.75rem; color: var(--text-muted);
    margin: -0.25rem 0 0.85rem; line-height: 1.5;
}
.field-hint code {
    background: rgba(129,140,248,0.12);
    color: var(--accent);
    padding: 0.12rem 0.4rem; border-radius: 4px;
    font-size: 0.72rem; font-family: var(--font-mono);
}
.env-link {
    color: var(--accent); text-decoration: underline;
    text-underline-offset: 2px; cursor: pointer;
}
.env-link:hover { color: var(--accent2); }

/* ── Form ── */
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block; font-size: 0.8rem; font-weight: 600;
    color: var(--text-muted); margin-bottom: 0.4rem;
    letter-spacing: 0.01em;
}
.label-req { color: var(--accent); }

.form-control {
    width: 100%; padding: 0.7rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-family: var(--font); font-size: 0.9rem;
    transition: all 0.2s;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-control[readonly] {
    opacity: 0.65;
    cursor: not-allowed;
    background: rgba(2,6,23,0.5);
}

textarea.form-control {
    resize: vertical;
    min-height: 50px;
}

.form-row {
    display: flex; gap: 0.85rem;
}
.form-row > .form-group { flex: 1; }
.form-group-sm { flex: 0 0 130px !important; }

/* ── Range Slider ── */
.range-wrap {
    display: flex; align-items: center; gap: 0.6rem;
}
.range-wrap input[type="range"] {
    flex: 1; height: 6px;
    -webkit-appearance: none; appearance: none;
    background: var(--border);
    border-radius: 3px; outline: none;
    cursor: pointer;
}
.range-wrap input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 18px; height: 18px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-glow);
    cursor: pointer; transition: transform 0.15s;
}
.range-wrap input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }
.range-val {
    font-size: 0.9rem; font-weight: 700; color: var(--accent);
    min-width: 36px; text-align: center;
    font-variant-numeric: tabular-nums;
}

/* ── Input Icon Wrap ── */
.input-icon-wrap {
    position: relative;
    display: flex; align-items: center;
}
.input-icon-wrap svg {
    position: absolute; left: 0.75rem;
    color: var(--text-muted); pointer-events: none;
}
.input-icon-wrap .form-control { padding-left: 2.5rem; }

/* ── Scene Cards ── */
.scene-card {
    background: var(--bg-scene);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 0.85rem;
    overflow: hidden;
    transition: border-color 0.25s, box-shadow 0.25s;
}
.scene-card:hover {
    border-color: var(--border-light);
    box-shadow: 0 0 30px rgba(129,140,248,0.06);
}
.scene-locked { border-left: 3px solid var(--accent); }

.scene-head {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.7rem 1rem;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid var(--border);
}
.scene-label {
    display: flex; align-items: center; gap: 0.6rem;
}
.scene-num {
    width: 26px; height: 26px;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent); color: #fff;
    border-radius: 50%;
    font-size: 0.75rem; font-weight: 700;
}
.outro-num { background: var(--purple); }

.scene-type-badge {
    font-size: 0.65rem; font-weight: 800;
    padding: 0.2rem 0.55rem; border-radius: 999px;
    letter-spacing: 0.06em; text-transform: uppercase;
}
.scene-type-badge.hook { background: var(--accent); color: #fff; }
.scene-type-badge.outro { background: var(--purple); color: #fff; }
.scene-type-badge.body { background: var(--cyan-dim); color: var(--cyan); }

.scene-id {
    font-size: 0.7rem; color: var(--text-muted);
    font-family: var(--font-mono);
}

.scene-lock-icon { font-size: 0.85rem; opacity: 0.5; }

.scene-body {
    padding: 0.85rem 1rem 0.5rem;
}

.scene-body textarea.scene-template {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    background: var(--bg-input);
    color: var(--text-secondary);
    line-height: 1.55;
    min-height: 100px;
}

/* ── SFX Details ── */
.sfx-details {
    margin-top: 0.4rem;
    border-top: 1px dashed var(--border);
    padding-top: 0.5rem;
}
.sfx-details summary {
    font-size: 0.78rem; font-weight: 600;
    color: var(--text-muted); cursor: pointer;
    padding: 0.3rem 0;
    user-select: none;
    transition: color 0.2s;
}
.sfx-details summary:hover { color: var(--text-secondary); }
.sfx-row { margin-top: 0.5rem; }

/* ── Add Scene Button ── */
.btn-add-scene {
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    width: 100%;
    background: transparent;
    color: var(--green);
    border: 1.5px dashed var(--green-dim);
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600; font-size: 0.875rem; font-family: var(--font);
    margin: 0.6rem 0 1rem;
    transition: all 0.25s;
}
.btn-add-scene:hover {
    background: var(--green-dim);
    border-color: var(--green);
    box-shadow: 0 0 20px rgba(52,211,153,0.15);
}
.btn-add-scene:disabled {
    opacity: 0.4; cursor: not-allowed;
}
.btn-add-scene:disabled:hover {
    background: transparent; border-color: var(--green-dim);
    box-shadow: none;
}

/* ── Remove Scene Button ── */
.btn-remove-scene {
    background: transparent;
    color: var(--red);
    border: 1px solid var(--red-dim);
    border-radius: var(--radius-xs);
    padding: 0.25rem 0.7rem;
    cursor: pointer;
    font-size: 0.72rem; font-weight: 600; font-family: var(--font);
    transition: all 0.2s;
}
.btn-remove-scene:hover {
    background: var(--red-dim);
    border-color: var(--red);
}

/* ── Actions Bar ── */
.actions-bar {
    display: flex; justify-content: center;
    margin: 0.5rem 0 1.5rem;
}
.btn-generate {
    display: flex; align-items: center; gap: 0.6rem;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    border: none;
    padding: 0.9rem 3rem;
    border-radius: 999px;
    font-size: 1.05rem; font-weight: 700; font-family: var(--font);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 25px var(--accent-glow);
    position: relative; overflow: hidden;
}
.btn-generate::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}
.btn-generate:hover::after { transform: translateX(100%); }
.btn-generate:hover {
    box-shadow: 0 6px 35px rgba(129,140,248,0.4);
    transform: translateY(-1px);
}
.btn-generate:active { transform: translateY(0) scale(0.98); }
.btn-generate:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-generate:disabled::after { display: none; }

/* ── Cleanup Button ── */
.btn-cleanup {
    display: flex; align-items: center; gap: 0.4rem;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 0.65rem 1.5rem;
    border-radius: 999px;
    font-size: 0.85rem; font-weight: 500; font-family: var(--font);
    cursor: pointer;
    transition: all 0.2s;
    margin-left: 1rem;
    white-space: nowrap;
}
.btn-cleanup:hover {
    color: var(--red);
    border-color: var(--red-dim);
    background: rgba(239,68,68,0.05);
}
.btn-cleanup:active { transform: scale(0.97); }

/* ── Spinner ── */
.spinner {
    width: 1.2rem; height: 1.2rem;
    border: 2.5px solid rgba(255,255,255,0.25);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }

/* ── Result Card ── */
.result-card { border-color: var(--green) !important; }
.video-container {
    margin: 0 1.5rem 1.5rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #000;
    box-shadow: 0 0 40px rgba(0,0,0,0.6);
}
.video-container video {
    display: block; width: 100%;
    max-height: 520px;
}

/* ── Terminal ── */
.terminal-card {
    background: #020617;
    border-color: #0f1a2e;
}
.terminal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 1.5rem 0.5rem;
}
.terminal-header h2 { font-size: 1rem; }
.terminal {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: #cbd5e1;
    height: 240px; overflow-y: auto;
    padding: 1rem 1.5rem 1.5rem;
    margin: 0;
    background: #010617;
    border-top: 1px solid var(--border);
    line-height: 1.6;
}

.log-line { margin-bottom: 0.2rem; word-break: break-all; }
.text-muted { color: var(--text-muted); }
.text-error { color: var(--red); }
.text-success { color: var(--green); }

/* ── Toggle Switch ── */
.toggle-switch {
    display: flex; align-items: center; gap: 0.5rem;
    cursor: pointer; font-size: 0.8rem; color: var(--text-muted);
    user-select: none;
}
.toggle-switch input { display: none; }
.slider {
    position: relative; display: inline-block;
    width: 38px; height: 22px;
    background: var(--border);
    border-radius: 22px;
    transition: all 0.3s;
}
.slider::before {
    content: ""; position: absolute;
    width: 16px; height: 16px;
    left: 3px; bottom: 3px;
    background: #fff; border-radius: 50%;
    transition: transform 0.3s;
}
input:checked + .slider { background: var(--accent); }
input:checked + .slider::before { transform: translateX(16px); }

/* ── Modal ── */
.modal-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(0,0,0,0.65);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 440px; max-width: 94vw;
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.25s ease;
}
@keyframes scaleIn { from { transform: scale(0.95); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 1.1rem; font-weight: 700; }
.btn-close-modal {
    background: none; border: none;
    color: var(--text-muted); font-size: 1.5rem;
    cursor: pointer; line-height: 1;
    transition: color 0.2s;
}
.btn-close-modal:hover { color: var(--red); }

.modal-body { padding: 1.25rem 1.5rem; }
.modal-body small { display: block; margin-top: 0.5rem; color: var(--text-muted); font-size: 0.75rem; }
.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex; justify-content: flex-end;
}

.btn-primary {
    background: var(--accent); color: #fff;
    border: none; padding: 0.65rem 1.5rem;
    border-radius: var(--radius-xs);
    font-weight: 600; font-size: 0.9rem; font-family: var(--font);
    cursor: pointer;
    transition: all 0.2s;
}
.btn-primary:hover { background: var(--accent2); box-shadow: 0 0 15px var(--accent-glow); }

/* ── Responsive ── */
@media (max-width: 700px) {
    .container { padding: 1rem 0.75rem 3rem; }
    .form-row { flex-direction: column; gap: 0; }
    .form-group-sm { flex: 1 !important; }
    .header-inner { flex-direction: column; align-items: flex-start; }
    .btn-generate { width: 100%; justify-content: center; }
}