/* ══════════════════════════════════════════════
   VEO DIRECTOR v3.0 — DESIGN SYSTEM
   Premium Dark Cinematic Theme · Mobile-First
   ══════════════════════════════════════════════ */

/* ── CUSTOM PROPERTIES ── */
:root {
  /* Surfaces */
  --bg-root: #08080c;
  --bg-card: rgba(14, 14, 22, 0.85);
  --bg-card-hover: rgba(20, 20, 32, 0.92);
  --bg-input: rgba(18, 18, 30, 0.9);
  --bg-input-focus: rgba(24, 24, 40, 0.95);
  --bg-code: #0a0a14;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(0, 240, 255, 0.3);

  /* Text */
  --text-primary: #f0f0f5;
  --text-secondary: #9a9ab0;
  --text-muted: #5a5a70;
  --text-accent: #00f0ff;

  /* Accents */
  --accent-cyan: #00f0ff;
  --accent-purple: #c084fc;
  --accent-gold: #fbbf24;
  --accent-green: #34d399;
  --accent-red: #f87171;
  --accent-gradient: linear-gradient(
    135deg,
    #00f0ff 0%,
    #c084fc 50%,
    #f472b6 100%
  );
  --accent-glow: 0 0 20px rgba(0, 240, 255, 0.15);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.15s var(--ease-out);
  --transition-base: 0.25s var(--ease-out);
  --transition-slow: 0.4s var(--ease-out);

  /* Fonts */
  --font-ui: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
}

/* ══════════════════════════════════════
   LIGHT THEME
   ══════════════════════════════════════ */
[data-theme="light"] {
  /* Surfaces */
  --bg-root: #f4f4f8;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: rgba(245, 245, 252, 0.96);
  --bg-input: rgba(240, 240, 248, 0.95);
  --bg-input-focus: rgba(235, 235, 248, 1);
  --bg-code: #f0f0f6;

  /* Borders */
  --border-subtle: rgba(0, 0, 0, 0.07);
  --border-medium: rgba(0, 0, 0, 0.12);
  --border-accent: rgba(0, 180, 200, 0.35);

  /* Text */
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8a8aa8;
  --text-accent: #0099aa;

  /* Accents (darkened for light bg readability) */
  --accent-cyan: #0099aa;
  --accent-purple: #8b5cf6;
  --accent-gold: #d97706;
  --accent-green: #059669;
  --accent-red: #dc2626;
  --accent-magenta: #a855f7;
  --accent-gradient: linear-gradient(135deg, #0099aa 0%, #8b5cf6 50%, #ec4899 100%);
  --accent-glow: 0 0 20px rgba(0, 153, 170, 0.1);
}

/* Light theme specific overrides */
[data-theme="light"] .app-header {
  background: rgba(244, 244, 248, 0.85);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .card {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .card-dna {
  border-color: rgba(5, 150, 105, 0.2);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06), 0 0 20px rgba(5, 150, 105, 0.04);
}

[data-theme="light"] .generate-btn,
[data-theme="light"] .preset-btn {
  background: linear-gradient(135deg, #0e7490 0%, #6d28d9 50%, #be185d 100%) !important;
  color: #fff !important;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

[data-theme="light"] .generate-btn .spinner {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
}

[data-theme="light"] .generate-btn::before {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
}

[data-theme="light"] .action-btn {
  background: rgba(0, 153, 170, 0.08);
  border-color: rgba(0, 153, 170, 0.2);
}

[data-theme="light"] .upload-btn {
  background: rgba(0, 153, 170, 0.08);
  border-color: rgba(0, 153, 170, 0.25);
}

[data-theme="light"] .copy-prompt-btn {
  background: rgba(0, 153, 170, 0.06);
  border-color: rgba(0, 153, 170, 0.18);
}

[data-theme="light"] .json-output {
  background: #fafafe;
  color: #333;
}

[data-theme="light"] .json-key { color: #0077b6; }
[data-theme="light"] .json-string { color: #059669; }
[data-theme="light"] .json-number { color: #d97706; }
[data-theme="light"] .json-bool { color: #8b5cf6; }
[data-theme="light"] .json-null { color: #dc2626; }
[data-theme="light"] .json-bracket { color: #999; }

[data-theme="light"] .toast {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .toast-text {
  color: #059669;
}

[data-theme="light"] .prompt-card-text {
  background: rgba(240, 240, 248, 0.8);
}

[data-theme="light"] .prompt-card-text-dna {
  background: rgba(240, 248, 244, 0.9) !important;
}

[data-theme="light"] .dna-preview-box {
  background: rgba(245, 250, 248, 0.95);
}

[data-theme="light"] .ctx-seed-input {
  background: rgba(245, 240, 255, 0.9);
}

[data-theme="light"] .asset-context-card {
  background: var(--bg-input);
}

[data-theme="light"] select option {
  background: #fff;
  color: #1a1a2e;
}

[data-theme="light"] .ctx-select option {
  background: #fff;
  color: #1a1a2e;
}

[data-theme="light"] .orientation-btn,
[data-theme="light"] .duration-btn {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .orientation-btn.active,
[data-theme="light"] .duration-btn.active {
  background: rgba(0, 153, 170, 0.08);
  border-color: rgba(0, 153, 170, 0.4);
}

[data-theme="light"] .dna-intro {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.06), rgba(0, 153, 170, 0.04));
  border-color: rgba(5, 150, 105, 0.15);
}

[data-theme="light"] .dna-checkbox-visual {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .dna-toggle-btn {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .dna-toggle-indicator {
  background: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .dna-toggle-indicator::after {
  background: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .upload-zone {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .app-footer {
  border-top-color: rgba(0, 0, 0, 0.06);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  color-scheme: dark;
}

[data-theme="light"] {
  color-scheme: light;
}

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

/* Animated background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(
      ellipse 80% 60% at 50% 0%,
      rgba(0, 240, 255, 0.04) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 60% 40% at 80% 100%,
      rgba(192, 132, 252, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse 40% 30% at 10% 60%,
      rgba(244, 114, 182, 0.02) 0%,
      transparent 40%
    );
  pointer-events: none;
  z-index: 0;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ══════════════════════════════════════
   HEADER
   ══════════════════════════════════════ */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-md);
  background: rgba(8, 8, 12, 0.8);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  max-width: 800px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand-icon svg {
  width: 36px;
  height: 36px;
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%,
  100% {
    filter: drop-shadow(0 0 4px rgba(0, 240, 255, 0.3));
  }
  50% {
    filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.6));
  }
}

.brand-text {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.version-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: rgba(0, 240, 255, 0.12);
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tagline {
  margin-top: var(--space-xs);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ══════════════════════════════════════
   MAIN LAYOUT
   ══════════════════════════════════════ */
.app-main {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ══════════════════════════════════════
   CARDS (Glassmorphism)
   ══════════════════════════════════════ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.card:hover {
  border-color: var(--border-medium);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.card-header h2 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  flex: 1;
}

.card-icon {
  font-size: 1.1rem;
}

.card-body {
  padding: var(--space-lg);
}

/* ══════════════════════════════════════
   FORM ELEMENTS
   ══════════════════════════════════════ */
.input-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.65;
  resize: vertical;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}

textarea::placeholder {
  color: var(--text-muted);
  font-size: 0.85rem;
}

input[type="text"] {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}

.char-count {
  text-align: right;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
}

select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239a9ab0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

select:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}

select option {
  background: #12121e;
  color: var(--text-primary);
}

/* ── SETTING GROUPS ── */
.setting-group {
  margin-bottom: var(--space-lg);
}

.setting-group:last-child {
  margin-bottom: 0;
}

/* ── PRESET BUTTON (Automação) ── */
.preset-btn {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-md);
  color: #000;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.preset-btn:hover {
  transform: translateY(-1px);
  box-shadow:
    0 4px 16px rgba(0, 240, 255, 0.2),
    0 2px 8px rgba(192, 132, 252, 0.15);
}

.preset-btn:active {
  transform: translateY(0);
}

/* ── ORIENTATION GRID ── */
.orientation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.orientation-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-sm);
  background: var(--bg-input);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-ui);
}

.orientation-btn:hover {
  border-color: var(--border-medium);
  background: var(--bg-input-focus);
}

.orientation-btn.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.06);
  color: var(--text-primary);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.08);
}

.orient-preview {
  border: 2px solid currentColor;
  border-radius: 3px;
  transition: border-color var(--transition-base);
}

.orient-horizontal {
  width: 40px;
  height: 24px;
}
.orient-vertical {
  width: 20px;
  height: 34px;
}
.orient-square {
  width: 28px;
  height: 28px;
}

.orient-label {
  font-size: 0.78rem;
  font-weight: 700;
}

.orient-sub {
  font-size: 0.62rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.3;
}

/* ── DURATION GRID ── */
.duration-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.duration-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-md) var(--space-xs);
  background: var(--bg-input);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-ui);
}

.duration-btn:hover {
  border-color: var(--border-medium);
  background: var(--bg-input-focus);
}

.duration-btn.active {
  border-color: var(--accent-purple);
  background: rgba(192, 132, 252, 0.06);
  color: var(--text-primary);
  box-shadow: 0 0 16px rgba(192, 132, 252, 0.08);
}

.dur-number {
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dur-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dur-sub {
  font-size: 0.6rem;
  color: var(--text-muted);
}

/* ── COLOR ROW ── */
.color-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-sm);
}

.color-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.color-field label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
}

input[type="color"] {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  cursor: pointer;
  padding: 2px;
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 2px;
}
input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-field select {
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-sm);
  padding-right: 28px;
}

/* ── EXTRA OPTIONS ── */
.option-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.option-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.option-field label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
}

.preset-btn {
  width: 100%;
  min-height: 38px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid rgba(52, 211, 153, 0.35);
  border-radius: var(--radius-md);
  background: linear-gradient(
    135deg,
    rgba(52, 211, 153, 0.16),
    rgba(0, 240, 255, 0.12)
  );
  color: #b8ffe2;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-base);
}

.preset-btn:hover {
  border-color: rgba(52, 211, 153, 0.65);
  box-shadow: 0 10px 20px rgba(10, 80, 70, 0.25);
  transform: translateY(-1px);
}

.preset-btn:active {
  transform: translateY(0);
}

.promotional-context-group[hidden] {
  display: none !important;
}

.promotional-context-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-sm);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-md);
  background: rgba(0, 20, 28, 0.35);
}

.promotional-context-help {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.promotional-context-btn {
  width: 100%;
  min-height: 40px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid rgba(0, 240, 255, 0.35);
  border-radius: var(--radius-md);
  background: linear-gradient(
    135deg,
    rgba(0, 240, 255, 0.16),
    rgba(192, 132, 252, 0.12)
  );
  color: #d8f9ff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-base);
}

.promotional-context-btn:hover {
  border-color: rgba(0, 240, 255, 0.7);
  box-shadow: 0 10px 22px rgba(0, 80, 100, 0.25);
  transform: translateY(-1px);
}

.promotional-context-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.promotional-context-url {
  width: 100%;
  min-height: 38px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: rgba(8, 16, 28, 0.9);
  color: var(--text-primary);
  font-size: 0.82rem;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.promotional-context-url:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.promotional-context-url::placeholder {
  color: var(--text-muted);
}

.promotional-context-analyze-btn {
  width: 100%;
  min-height: 40px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid rgba(251, 191, 36, 0.35);
  border-radius: var(--radius-md);
  background: linear-gradient(
    135deg,
    rgba(251, 191, 36, 0.16),
    rgba(0, 240, 255, 0.12)
  );
  color: #fff1ca;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-base);
}

.promotional-context-analyze-btn:hover {
  border-color: rgba(251, 191, 36, 0.7);
  box-shadow: 0 10px 22px rgba(100, 80, 0, 0.25);
  transform: translateY(-1px);
}

.promotional-context-analyze-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.promotional-context-status {
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(10, 10, 20, 0.7);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  line-height: 1.4;
  word-break: break-word;
}

.setting-help {
  margin-top: var(--space-xs);
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.timeline-editor {
  margin-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.timeline-seq-card {
  background: rgba(14, 14, 22, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}

.timeline-seq-title {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.02em;
}

.timeline-seq-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.timeline-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-label {
  font-size: 0.66rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-textarea {
  min-height: 64px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: rgba(10, 10, 20, 0.8);
  color: var(--text-primary);
  font-size: 0.74rem;
  resize: vertical;
}

.timeline-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}

/* ══════════════════════════════════════
   UPLOAD ZONE
   ══════════════════════════════════════ */
.upload-zone {
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.03);
  box-shadow: inset 0 0 30px rgba(0, 240, 255, 0.03);
}

.upload-zone.dragover {
  transform: scale(1.01);
}

.upload-icon {
  width: 40px;
  height: 40px;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
  transition: color var(--transition-base);
}

.upload-zone:hover .upload-icon {
  color: var(--accent-cyan);
}

.upload-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.upload-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.upload-btn {
  padding: var(--space-sm) var(--space-lg);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.upload-btn:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.12);
}

/* ── UPLOAD INSTRUCTIONS ── */
.upload-instructions {
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: rgba(0, 240, 255, 0.04);
  border: 1px solid rgba(0, 240, 255, 0.1);
  border-radius: var(--radius-md);
}

.instruction-text {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.instruction-text strong {
  color: var(--accent-cyan);
}

.header-badge {
  font-size: 0.6rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(0, 240, 255, 0.12);
  color: var(--accent-cyan);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: auto;
}

/* ── ASSET CONTEXT CARDS ── */
.asset-context-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.asset-context-card {
  --accent: var(--accent-cyan);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  overflow: hidden;
  animation: fadeSlideUp 0.4s var(--ease-out) both;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.asset-context-card:hover {
  border-color: var(--border-medium);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.ctx-card-top {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
}

.ctx-thumb {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.ctx-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.ctx-card-title {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.ctx-type-icon {
  font-size: 1rem;
}

.ctx-name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.ctx-remove {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.2);
  color: var(--accent-red);
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-family: var(--font-ui);
  flex-shrink: 0;
}

.ctx-remove:hover {
  background: rgba(248, 113, 113, 0.3);
  border-color: rgba(248, 113, 113, 0.5);
}

.ctx-auto-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  border: 1px solid;
  display: inline-flex;
  align-self: flex-start;
  letter-spacing: 0.02em;
}

.ctx-seed-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  background: rgba(14, 14, 22, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px 6px 2px 8px;
  align-self: flex-start;
}

.ctx-seed-code {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent-magenta);
  letter-spacing: 0.05em;
}

.ctx-seed-copy {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.ctx-seed-copy:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.ctx-role-text {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.ctx-card-fields {
  padding: 0 var(--space-md) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.ctx-field {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.ctx-field-seed-display {
  margin-bottom: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(192, 132, 252, 0.05);
  border: 1px dashed rgba(192, 132, 252, 0.2);
  border-radius: var(--radius-sm);
}

.ctx-seed-display {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ctx-seed-input {
  width: 100%;
  padding: 6px 8px;
  background: rgba(14, 14, 22, 0.8);
  border: 1px solid rgba(192, 132, 252, 0.3);
  border-radius: 4px;
  color: var(--accent-magenta);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.75rem;
  text-align: center;
  letter-spacing: 0.08em;
}

.ctx-seed-input:focus {
  outline: none;
  border-color: var(--accent-magenta);
}

.ctx-seed-help {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
}

.ctx-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.ctx-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ctx-select {
  width: 100%;
  padding: var(--space-xs) var(--space-sm);
  padding-right: 28px;
  background: rgba(14, 14, 22, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239a9ab0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  transition: border-color var(--transition-fast);
}

.ctx-select:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.ctx-select option {
  background: #12121e;
  color: var(--text-primary);
}

.ctx-textarea {
  width: 100%;
  padding: var(--space-sm);
  background: rgba(14, 14, 22, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  line-height: 1.5;
  resize: vertical;
  transition: border-color var(--transition-fast);
}

.ctx-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.ctx-textarea::placeholder {
  color: var(--text-muted);
  font-size: 0.72rem;
}

/* Small screen adjustments */
@media (max-width: 480px) {
  .ctx-card-top {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .ctx-thumb {
    width: 100%;
    height: auto;
    max-height: 160px;
  }
  .ctx-field-row {
    grid-template-columns: 1fr;
  }
  .ctx-auto-badge {
    align-self: center;
  }
}

.asset-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-family: var(--font-ui);
}

.asset-remove:hover {
  background: rgba(248, 113, 113, 0.8);
  color: white;
}

/* ══════════════════════════════════════
   GENERATE BUTTON
   ══════════════════════════════════════ */
.generate-wrapper {
  padding: 0 var(--space-md);
}

.generate-btn {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-lg);
  color: #000;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.generate-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.15) 0%,
    transparent 50%
  );
  transition: opacity var(--transition-base);
}

.generate-btn:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 32px rgba(0, 240, 255, 0.25),
    0 4px 12px rgba(192, 132, 252, 0.2);
}

.generate-btn:active {
  transform: translateY(0);
}

.generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}

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

.generate-btn-loading {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ══════════════════════════════════════
   OUTPUT SECTION
   ══════════════════════════════════════ */
.card-output {
  border-color: rgba(0, 240, 255, 0.15);
  box-shadow: var(--accent-glow);
  animation: fadeSlideUp 0.5s var(--ease-out) both;
}

.output-actions {
  display: flex;
  gap: var(--space-sm);
  margin-left: auto;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.action-btn:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.1);
}

.action-btn.copied {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.4);
  color: var(--accent-green);
}

.output-body {
  padding: 0;
}

/* ── SCENE TABS ── */
.scene-tabs {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 var(--space-md);
  gap: 2px;
  scrollbar-width: none;
}

.scene-tabs::-webkit-scrollbar {
  display: none;
}

.scene-tab {
  flex-shrink: 0;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.scene-tab:hover {
  color: var(--text-secondary);
}

.scene-tab.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

/* ── JSON CODE BLOCK ── */
.json-output {
  margin: 0;
  padding: var(--space-lg);
  background: var(--bg-code);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  overflow-x: auto;
  max-height: 500px;
  overflow-y: auto;
  tab-size: 2;
  color: var(--text-secondary);
}

.json-output code {
  font-family: inherit;
}

/* JSON Syntax Colors */
.json-key {
  color: #7dd3fc;
}
.json-string {
  color: #86efac;
}
.json-number {
  color: #fbbf24;
}
.json-bool {
  color: #c084fc;
}
.json-null {
  color: #f87171;
}
.json-bracket {
  color: #5a5a70;
}

/* ══════════════════════════════════════
   PROMPT CARDS (per scene)
   ══════════════════════════════════════ */
.prompt-card {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  animation: fadeSlideUp 0.4s var(--ease-out) both;
}

.prompt-card:last-child {
  margin-bottom: 0;
}

.prompt-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.prompt-card-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.prompt-card-duration {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(192, 132, 252, 0.1);
  color: var(--accent-purple);
}

.prompt-card-text {
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-secondary);
  padding: var(--space-sm);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-cyan);
}

.copy-prompt-btn {
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-prompt-btn:hover {
  background: rgba(0, 240, 255, 0.12);
  border-color: rgba(0, 240, 255, 0.3);
}

/* ── Veo 3 DNA Prompt Cards ── */
.prompt-card-dna-section {
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: rgba(52, 211, 153, 0.04);
  border: 1px solid rgba(52, 211, 153, 0.15);
  border-radius: var(--radius-md);
}

.prompt-card-dna-header {
  margin-bottom: var(--space-sm);
}

.prompt-card-dna-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.15), rgba(0, 240, 255, 0.1));
  color: #6ee7b7;
  display: inline-block;
}

.prompt-card-text-dna {
  border-left-color: rgba(52, 211, 153, 0.5) !important;
  background: rgba(8, 8, 12, 0.85) !important;
  white-space: pre-wrap;
  font-size: 0.78rem;
  line-height: 1.8;
}

.copy-prompt-btn-dna {
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-sm);
  color: #6ee7b7;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-prompt-btn-dna:hover {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.4);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.1);
}

.prompt-card-standard-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.prompt-card-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(251, 191, 36, 0.05);
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(251, 191, 36, 0.15);
}

.prompt-card-timestamp {
  border-color: rgba(251, 191, 36, 0.25);
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.04);
}

/* ══════════════════════════════════════
   TOAST NOTIFICATION
   ══════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(14, 14, 22, 0.95);
  border: 1px solid rgba(52, 211, 153, 0.3);
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 200;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: all var(--transition-base);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast-icon {
  font-size: 1rem;
}
.toast-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-green);
}

/* ══════════════════════════════════════
   DNA DO PERSONAGEM (Veo 3 Continuity)
   ══════════════════════════════════════ */
.card-dna {
  border-color: rgba(52, 211, 153, 0.2);
  box-shadow: 0 0 30px rgba(52, 211, 153, 0.04);
}

.dna-badge {
  background: linear-gradient(
    135deg,
    rgba(52, 211, 153, 0.18),
    rgba(0, 240, 255, 0.14)
  );
  color: #6ee7b7;
  border: 1px solid rgba(52, 211, 153, 0.25);
}

.dna-intro {
  padding: var(--space-md);
  background: linear-gradient(
    135deg,
    rgba(52, 211, 153, 0.06),
    rgba(0, 240, 255, 0.04)
  );
  border: 1px solid rgba(52, 211, 153, 0.12);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.dna-intro-text {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.dna-intro-text strong {
  color: #6ee7b7;
}

.dna-intro-text em {
  color: var(--accent-cyan);
  font-style: italic;
}

/* DNA Toggle Button */
.dna-toggle-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.dna-toggle-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(14, 14, 22, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  min-width: 140px;
}

.dna-toggle-btn-sm {
  min-width: 120px;
  font-size: 0.72rem;
}

.dna-toggle-btn:hover {
  border-color: rgba(52, 211, 153, 0.4);
}

.dna-toggle-btn.active {
  background: rgba(52, 211, 153, 0.1);
  border-color: rgba(52, 211, 153, 0.5);
  color: #6ee7b7;
}

.dna-toggle-indicator {
  width: 36px;
  height: 20px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  position: relative;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.dna-toggle-indicator::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transition: all var(--transition-base);
}

.dna-toggle-btn.active .dna-toggle-indicator {
  background: rgba(52, 211, 153, 0.35);
}

.dna-toggle-btn.active .dna-toggle-indicator::after {
  left: 19px;
  background: #6ee7b7;
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.5);
}

.dna-toggle-help {
  margin: 0;
  flex: 1;
  min-width: 180px;
}

/* DNA Body */
.dna-body {
  animation: fadeSlideUp 0.35s var(--ease-out) both;
}

.dna-body[hidden] {
  display: none;
}

/* DNA Language Badge */
.dna-lang-badge {
  font-size: 0.6rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  background: rgba(251, 191, 36, 0.12);
  color: #fbbf24;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-left: var(--space-xs);
  vertical-align: middle;
}

/* DNA Char Count */
.dna-char-count {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.dna-char-hint {
  color: var(--text-muted);
  opacity: 0.6;
}

/* DNA Options Grid (Checkboxes) */
.dna-options-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.dna-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.dna-checkbox:hover {
  background: rgba(52, 211, 153, 0.04);
}

.dna-checkbox input[type="checkbox"] {
  display: none;
}

.dna-checkbox-visual {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1.5px solid var(--border-medium);
  background: rgba(14, 14, 22, 0.6);
  position: relative;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.dna-checkbox-visual::after {
  content: "✓";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  font-size: 0.65rem;
  color: #000;
  font-weight: 900;
  transition: transform var(--transition-fast);
}

.dna-checkbox input:checked + .dna-checkbox-visual {
  background: linear-gradient(135deg, #34d399, #22d3ee);
  border-color: transparent;
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.3);
}

.dna-checkbox input:checked + .dna-checkbox-visual::after {
  transform: translate(-50%, -50%) scale(1);
}

.dna-checkbox-text {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* DNA Preview Box */
.dna-preview-box {
  padding: var(--space-md);
  background: rgba(8, 8, 12, 0.9);
  border: 1px solid rgba(52, 211, 153, 0.15);
  border-left: 3px solid rgba(52, 211, 153, 0.5);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.8;
  color: var(--text-secondary);
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.dna-preview-box.has-content {
  box-shadow: 0 0 20px rgba(52, 211, 153, 0.06);
}

.dna-preview-placeholder {
  color: var(--text-muted);
  font-style: italic;
  font-family: var(--font-ui);
  font-size: 0.78rem;
}

.dna-preview-highlight {
  color: #6ee7b7;
  font-weight: 600;
}

.dna-preview-directive {
  color: #fbbf24;
  font-weight: 500;
}

.dna-preview-camera {
  color: #7dd3fc;
}

.dna-preview-lock {
  color: #f87171;
  font-weight: 600;
}

/* DNA Copy Button */
.dna-copy-btn {
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-sm);
  color: #6ee7b7;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dna-copy-btn:hover:not(:disabled) {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.4);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.1);
}

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

/* ══════════════════════════════════════
   FLOATING THEME TOGGLE (FAB)
   ══════════════════════════════════════ */
.theme-toggle-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 300;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--border-medium);
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.04);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base),
    border-color var(--transition-base);
  animation: fabSlideIn 0.5s var(--ease-out) 0.3s both;
}

@keyframes fabSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.8);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.theme-toggle-fab:hover {
  transform: translateY(-3px) scale(1.08);
  box-shadow:
    0 8px 28px rgba(0, 0, 0, 0.35),
    0 0 24px rgba(0, 240, 255, 0.12);
  border-color: var(--accent-cyan);
}

.theme-toggle-fab:active {
  transform: translateY(-1px) scale(1.02);
}

.theme-toggle-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  transition: all 0.4s var(--ease-out);
}

.theme-toggle-icon svg {
  width: 100%;
  height: 100%;
}

/* Dark mode (default): show sun, hide moon */
.theme-icon-sun {
  color: #fbbf24;
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-icon-moon {
  color: #818cf8;
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

/* Light mode (default): show moon, hide sun */
[data-theme="light"] .theme-icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

[data-theme="light"] .theme-icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Dark mode (explicit): show sun, hide moon */
[data-theme="dark"] .theme-icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

[data-theme="light"] .theme-toggle-fab {
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.1),
    0 0 0 1px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .theme-toggle-fab:hover {
  box-shadow:
    0 8px 28px rgba(0, 0, 0, 0.15),
    0 0 24px rgba(139, 92, 246, 0.12);
  border-color: var(--accent-purple);
}

/* Mobile position adjustment */
@media (max-width: 480px) {
  .theme-toggle-fab {
    bottom: 20px;
    right: 20px;
    width: 46px;
    height: 46px;
  }
  .theme-toggle-icon {
    width: 20px;
    height: 20px;
  }
}

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.app-footer {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.app-footer p {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* ══════════════════════════════════════
   RESPONSIVE — TABLET+
   ══════════════════════════════════════ */
@media (min-width: 768px) {
  .app-header {
    padding: var(--space-md) var(--space-xl);
  }

  .brand-text h1 {
    font-size: 1.5rem;
  }
  .tagline {
    font-size: 0.82rem;
  }

  .app-main {
    padding: var(--space-xl) var(--space-lg) var(--space-2xl);
    gap: var(--space-xl);
  }

  .orientation-grid {
    gap: var(--space-md);
  }
  .orientation-btn {
    padding: var(--space-lg) var(--space-md);
  }
  .orient-label {
    font-size: 0.88rem;
  }

  .duration-grid {
    gap: var(--space-md);
  }
  .duration-btn {
    padding: var(--space-lg) var(--space-sm);
  }

  textarea {
    font-size: 0.95rem;
  }

  .generate-btn {
    font-size: 1.1rem;
    padding: var(--space-lg) var(--space-xl);
    border-radius: var(--radius-xl);
  }
  .generate-wrapper {
    padding: 0;
  }

  .json-output {
    font-size: 0.8rem;
    max-height: 600px;
  }
}

@media (max-width: 767px) {
  .timeline-seq-fields {
    grid-template-columns: 1fr;
  }
}

/* Desktop */
@media (min-width: 1200px) {
  .app-main {
    max-width: 900px;
  }
  .json-output {
    max-height: 700px;
  }
}

/* Small screens */
@media (max-width: 380px) {
  .duration-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .color-row {
    grid-template-columns: 1fr;
  }
  .option-row {
    grid-template-columns: 1fr;
  }
}