/* core.css — design tokens & reset */
*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg-0: #0a0a0c;
  --bg-1: #111116;
  --bg-2: #18181f;
  --bg-3: #22222c;
  --text-0: #f4f4f8;
  --text-1: #b8b8c8;
  --text-2: #7a7a8c;
  --accent: #6ea8ff;
  --accent-dim: rgba(110, 168, 255, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --radius: 10px;
  --radius-sm: 6px;
  --font-ui: 'Inter', 'Noto Sans Devanagari', 'Mukta', system-ui, sans-serif;
  --font-script: 'Courier Prime', 'Noto Sans Devanagari', 'Mukta', monospace;
  --font-script-indic: 'Arjun', 'Noto Sans Devanagari', 'Mukta', sans-serif;
  --font-nepali: 'Arjun', 'Noto Sans Devanagari', 'Mukta', sans-serif;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --header-h: 52px;
  --status-h: 28px;
  --sidebar-w: 280px;
  --rail-w: 260px;
  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg-0);
  color: var(--text-0);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
a { color: var(--accent); text-decoration: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-3);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition);
}
.btn:hover { background: #2a2a36; border-color: rgba(255,255,255,0.14); }
.btn-primary { background: var(--accent); color: #0a0a0c; border-color: transparent; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-save {
  background: var(--accent);
  color: #0a0a0c;
  border-color: transparent;
  font-weight: 600;
}
.btn-save:hover { filter: brightness(1.08); }
.btn-icon {
  padding: 7px;
  justify-content: center;
  min-width: 34px;
  min-height: 34px;
}
.btn-icon__svg {
  width: 18px;
  height: 18px;
  display: block;
  flex-shrink: 0;
}
.btn-send {
  gap: 6px;
  padding: 6px 12px;
}
.btn-send__label {
  font-size: 13px;
  font-weight: 600;
}

.btn-toggle.is-active {
  background: var(--accent-dim);
  border-color: rgba(110, 168, 255, 0.45);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(110, 168, 255, 0.2);
}

.panel-header {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
  padding: 10px 12px 6px;
}

.sidebar-empty, .outline-empty, .timeline-empty, .inspector-empty, .scene-nav-empty {
  color: var(--text-2);
  font-size: 12px;
  padding: 4px 0;
}

.toast {
  position: fixed;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  z-index: 9999;
  box-shadow: var(--shadow);
}

.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: grid;
  place-items: center;
  z-index: 10000;
}
.dialog-panel {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  min-width: 320px;
  box-shadow: var(--shadow);
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}
.dialog-actions button {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-3);
  border: 1px solid var(--border);
}
.dialog-actions .btn-primary { background: var(--accent); color: #0a0a0c; }
.dialog-title {
  margin: 0 0 8px;
  font-size: 16px;
}
.dialog-input {
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-1);
  color: var(--text-1);
  font: inherit;
}

.import-script-panel {
  width: min(520px, calc(100vw - 32px));
  max-height: min(90vh, 720px);
  overflow: auto;
}
.import-script-hint {
  margin: 0 0 14px;
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.45;
}
.import-script-label {
  display: block;
  margin: 12px 0 6px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-2);
  text-transform: uppercase;
}
.import-script-name {
  margin-top: 0;
}
.import-script-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 4px;
  padding: 22px 16px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-1);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--transition), background var(--transition);
}
.import-script-drop:hover,
.import-script-drop.is-dragover {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.import-script-drop__title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-0);
}
.import-script-drop__meta {
  font-size: 0.8rem;
  color: var(--text-2);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.import-script-paste {
  width: 100%;
  min-height: 160px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-1);
  color: var(--text-0);
  font-family: var(--font-script);
  font-size: 0.88rem;
  line-height: 1.45;
  resize: vertical;
}
.import-script-paste:focus,
.import-script-name:focus {
  outline: 2px solid var(--accent-dim);
  border-color: var(--accent);
}
.import-script-error {
  margin: 12px 0 0;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 80, 80, 0.12);
  color: #ff8f8f;
  font-size: 0.84rem;
  line-height: 1.4;
}

.continuity-warn {
  font-size: 11px;
  color: #ffb86c;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
}