/* ═══════════════════════════════════════════════════════════════════════════
   Whiteboard Animation AI — White-Theme Design System
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────────────────────────────────── */
:root {
  --color-white:       #ffffff;
  --color-bg:          #f8f9fb;
  --color-bg-alt:      #f3f4f6;
  --color-border:      #e5e7eb;
  --color-border-light:#f0f0f3;
  --color-text:        #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-text-muted:  #9ca3af;

  --color-accent:      #4f46e5;
  --color-accent-light:#eef2ff;
  --color-accent-hover:#4338ca;

  --color-purple:      #7c3aed;
  --color-blue:        #3b82f6;
  --color-green:       #10b981;
  --color-amber:       #f59e0b;
  --color-red:         #ef4444;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;
  --radius-xl:  20px;

  --shadow-xs:  0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.08), 0 4px 8px rgba(0,0,0,.04);

  --sidebar-width: 240px;
  --font: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, sans-serif;
}

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

html { font-size: 15px; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* ── Sidebar ───────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-white);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  padding: 0;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 28px;
  border-bottom: 1px solid var(--color-border-light);
}

.brand-icon {
  width: 40px; height: 40px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-text {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.15s ease;
  cursor: pointer;
}

.nav-item:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.nav-item.active {
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  flex-shrink: 0;
}

.status-dot.busy { background: var(--color-amber); animation: pulse-dot 1.2s infinite; }
.status-dot.error { background: var(--color-red); }

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

/* ── Main Content ──────────────────────────────────────────────────────── */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 36px 40px 60px;
  max-width: 1100px;
  width: 100%;
}

.section { display: none; }
.section.active { display: block; }

.section-header {
  margin-bottom: 28px;
}

.section-header h1 {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ── Cards ─────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.card-body {
  padding: 24px;
}

/* ── Stat Grid ─────────────────────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-xs);
  transition: box-shadow 0.2s ease;
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.stat-icon--purple { background: #f3f0ff; color: var(--color-purple); }
.stat-icon--blue   { background: #eff6ff; color: var(--color-blue); }
.stat-icon--green  { background: #ecfdf5; color: var(--color-green); }
.stat-icon--amber  { background: #fffbeb; color: var(--color-amber); }

.stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 10px 20px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover { background: var(--color-accent-hover); box-shadow: var(--shadow-sm); }
.btn-primary:disabled { background: #a5b4fc; cursor: not-allowed; box-shadow: none; }

.btn-lg { padding: 14px 32px; font-size: 0.95rem; border-radius: var(--radius-md); }

.btn-outline {
  background: var(--color-white);
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-outline:hover { background: var(--color-accent-light); }

/* ── Forms ─────────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--color-text);
}

.required { color: var(--color-red); }

.form-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 5px;
}

textarea, input[type="text"], select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  font-size: 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
  resize: vertical;
}

textarea:focus, input[type="text"]:focus, select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(79,70,229,.1);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row--toggles {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

/* ── Toggle Cards ──────────────────────────────────────────────────────── */
.toggle-card {
  display: flex;
  align-items: center;
  padding: 14px 18px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
  gap: 14px;
}

.toggle-card:hover {
  border-color: #c7d2fe;
  background: #fafafe;
}

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

.toggle-card-content {
  flex: 1;
}

.toggle-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}

.toggle-desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 1px;
}

.toggle-switch {
  width: 42px; height: 24px;
  border-radius: 12px;
  background: #d1d5db;
  position: relative;
  transition: background 0.2s ease;
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.15);
  transition: transform 0.2s ease;
}

.toggle-card input:checked + .toggle-card-content + .toggle-switch,
.toggle-card input:checked ~ .toggle-switch {
  background: var(--color-accent);
}

.toggle-card input:checked + .toggle-card-content + .toggle-switch::after,
.toggle-card input:checked ~ .toggle-switch::after {
  transform: translateX(18px);
}

/* ── Progress Bar ──────────────────────────────────────────────────────── */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--color-bg-alt);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-purple));
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.job-message {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ── Badge ─────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge--running  { background: #eff6ff; color: var(--color-blue); }
.badge--complete { background: #ecfdf5; color: var(--color-green); }
.badge--failed   { background: #fef2f2; color: var(--color-red); }
.badge--queued   { background: #f3f4f6; color: #6b7280; }

/* ── Job List ──────────────────────────────────────────────────────────── */
.job-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.job-item:last-child { border-bottom: none; }

.job-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.job-item-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.job-item-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}

.job-item-meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* ── Gallery Grid ──────────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.gallery-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

.gallery-video-wrap {
  aspect-ratio: 16 / 9;
  background: #1a1a2e;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.gallery-video-wrap video {
  width: 100%; height: 100%;
  object-fit: cover;
}

.gallery-placeholder {
  color: #fff;
  opacity: 0.5;
  text-align: center;
  font-size: 0.85rem;
}

.gallery-card-info {
  padding: 16px 18px;
}

.gallery-card-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}

.gallery-card-date {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.gallery-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* ── Table ─────────────────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.825rem;
}

th, td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

th {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--color-bg);
}

tr:hover td { background: var(--color-bg); }

/* ── Empty State ───────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ── Toast ─────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
  max-width: 380px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.toast--success { border-left: 3px solid var(--color-green); }
.toast--error   { border-left: 3px solid var(--color-red); }
.toast--info    { border-left: 3px solid var(--color-blue); }

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

/* ── Log Viewer ──────────────────────────────────────────────────────── */
.log-controls {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-top: 16px;
}

.log-viewer {
  max-height: 600px;
  overflow-y: auto;
  font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  background: #0d1117;
  color: #c9d1d9;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: 0;
}

.log-entry {
  display: flex;
  padding: 4px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  gap: 12px;
  align-items: flex-start;
}

.log-entry:hover {
  background: rgba(255,255,255,0.03);
}

.log-entry:first-child {
  padding-top: 12px;
}

.log-entry:last-child {
  padding-bottom: 12px;
}

.log-entry__ts {
  color: #8b949e;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 75px;
  font-size: 0.75rem;
}

.log-entry__level {
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 65px;
  font-size: 0.72rem;
}

.log-entry__level--DEBUG    { color: #8b949e; }
.log-entry__level--INFO     { color: #58a6ff; }
.log-entry__level--WARNING  { color: #d29922; }
.log-entry__level--ERROR    { color: #f85149; }
.log-entry__level--CRITICAL { color: #ff7b72; font-weight: 900; }

.log-entry__ctx {
  color: #6e7681;
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 0.72rem;
}

.log-entry__msg {
  color: #e6edf3;
  word-break: break-word;
}

.log-entry__extra {
  color: #6e7681;
  font-size: 0.72rem;
  margin-left: 8px;
}

/* ── Review Panels ─────────────────────────────────────────────────────── */
.review-content {
  max-height: 500px;
  overflow-y: auto;
  padding: 16px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  line-height: 1.7;
  white-space: pre-wrap;
  border: 1px solid var(--color-border-light);
}

.scene-review-card {
  transition: box-shadow 0.15s ease;
}

.scene-review-card:hover {
  box-shadow: var(--shadow-sm);
}

.review-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.badge--research_review,
.badge--director_review {
  background: #fffbeb;
  color: var(--color-amber);
}

.badge--cancelled {
  background: #f3f4f6;
  color: #9ca3af;
}

.badge--generating,
.badge--merging,
.badge--researching,
.badge--directing {
  background: #eff6ff;
  color: var(--color-blue);
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .main-content { padding: 24px 20px; }
}

@media (max-width: 640px) {
  .sidebar {
    width: 60px;
  }
  .sidebar .brand-text,
  .sidebar .nav-item span,
  .sidebar .sidebar-footer span {
    display: none;
  }
  .sidebar-brand { justify-content: center; padding: 16px; }
  .nav-item { justify-content: center; padding: 12px; }
  .main-content { margin-left: 60px; }
  .stat-grid { grid-template-columns: 1fr; }
}

/* ── Settings (API Key) ─────────────────────────────────────────────────── */
.key-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.key-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
}

.key-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.key-item-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}

.key-status {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.key-status--empty {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
}

.key-status--saved {
  background: #dcfce7;
  color: #15803d;
}

.key-status-hint {
  font-size: 0.74rem;
  color: var(--color-text-muted);
}

.key-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.key-input-wrap input[type="password"],
.key-input-wrap input[type="text"] {
  width: 100%;
  padding: 10px 38px 10px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  font-size: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.key-input-wrap input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, .1);
}

.key-toggle-vis {
  position: absolute;
  right: 6px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  color: var(--color-text-muted);
  border-radius: 6px;
  cursor: pointer;
}

.key-toggle-vis:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.badge--ok { background: #dcfce7; color: #15803d; }
.badge--warn { background: #fef3c7; color: #92400e; }

@media (max-width: 720px) {
  .key-grid { grid-template-columns: 1fr; }
}