.video-mode-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.mode-tab {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
}

.mode-tab:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.mode-tab.active {
  border-color: var(--accent-purple);
  background: rgba(139, 92, 246, 0.1);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
}

.mode-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  color: var(--accent-purple);
}

.mode-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
}

.mode-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.prompt-input-group {
  margin: 20px 0;
}

.prompt-textarea {
  width: 100%;
  height: 110px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 14px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  resize: vertical;
}

.prompt-textarea:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

.video-options-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.video-option-item label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

/* Sticky & Scrollable Sidebar for Left Column */
.studio-sidebar {
  position: sticky;
  top: 85px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: rgba(139, 92, 246, 0.4) transparent;
  padding-right: 4px;
}

.studio-sidebar::-webkit-scrollbar {
  width: 5px;
}

.studio-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.studio-sidebar::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.35);
  border-radius: var(--radius-full);
}

.studio-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--accent-purple);
}

@media (max-width: 900px) {
  .studio-sidebar {
    position: static;
    max-height: none;
    overflow-y: visible;
    padding-right: 0;
  }
}

@media (max-width: 768px) {
  .video-mode-selector {
    grid-template-columns: 1fr;
  }
}

/* Studio Maintenance & Mode Disabled Banners */
.studio-global-disabled-banner {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 20px 0 28px 0;
  display: flex;
  align-items: center;
  gap: 18px;
}

.studio-global-disabled-banner .maintenance-icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: #f87171;
}

.studio-global-disabled-banner h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #f87171;
  margin-bottom: 4px;
}

.studio-global-disabled-banner p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.45;
}

.mode-maintenance-notice {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  color: #fbbf24;
}

.mode-maintenance-notice i {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.mode-maintenance-notice .notice-title {
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 2px;
  color: #fbbf24;
}

.mode-maintenance-notice .notice-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.mode-disabled-pill {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  margin-top: 6px;
  display: inline-block;
}