/* Base */
*, *::before, *::after { box-sizing: border-box; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #1e293b; }
::-webkit-scrollbar-thumb { background: #475569; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }
.custom-scroll { scrollbar-width: thin; scrollbar-color: #475569 #1e293b; }

/* Tabs */
.tab-btn {
  padding: 0.375rem 0.875rem;
  border-radius: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #94a3b8;
  transition: all 0.15s ease;
  cursor: pointer;
  background: transparent;
  border: none;
  white-space: nowrap;
}
.tab-btn:hover { color: #e2e8f0; background: #1e293b; }
.tab-btn.active { color: #fff; background: #6366f1; }

/* Cards */
.card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 0.875rem;
  overflow: hidden;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid #334155;
  background: #1e293b;
}
.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #f1f5f9;
}
.card-body {
  padding: 1.125rem;
}

/* Inputs */
.input-base {
  width: 100%;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 0.5rem;
  color: #f1f5f9;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
  display: block;
}
.input-base:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.input-base::placeholder { color: #475569; }
textarea.input-base { resize: vertical; min-height: 40px; line-height: 1.5; }
select.input-base { cursor: pointer; }

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: #6366f1;
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn-primary:hover { background: #4f46e5; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(99,102,241,0.4); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: #334155;
  color: #e2e8f0;
  border: 1px solid #475569;
  border-radius: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn-secondary:hover { background: #475569; color: #fff; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: transparent;
  color: #94a3b8;
  border: 1px solid #334155;
  border-radius: 0.5rem;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn-ghost:hover { color: #e2e8f0; background: #334155; }

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  background: transparent;
  color: #ef4444;
  border: 1px solid #ef444433;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-danger:hover { background: #ef444420; }

.btn-icon { font-size: 0.8em; }

/* Badges */
.badge {
  padding: 0.125rem 0.5rem;
  background: #334155;
  color: #94a3b8;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 500;
  border: 1px solid #475569;
}
.badge-success { background: #10b98120; color: #10b981; border-color: #10b98140; }
.badge-primary { background: #6366f120; color: #818cf8; border-color: #6366f140; }
.badge-warning { background: #f59e0b20; color: #f59e0b; border-color: #f59e0b40; }

/* Code block */
.code-block {
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  color: #7dd3fc;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

/* Filter buttons */
.filter-btn {
  padding: 0.375rem 0.875rem;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 0.5rem;
  color: #94a3b8;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.filter-btn:hover { color: #e2e8f0; border-color: #475569; }
.filter-btn.active { background: #6366f120; color: #818cf8; border-color: #6366f1; }

/* Viewport buttons */
.viewport-btn {
  padding: 0.25rem 0.625rem;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 0.375rem;
  color: #64748b;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.viewport-btn:hover { color: #e2e8f0; }
.viewport-btn.active { background: #6366f1; color: #fff; border-color: #6366f1; }

/* Spinner */
.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid #334155;
  border-top-color: #6366f1;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
.toast {
  pointer-events: all;
  padding: 0.75rem 1rem;
  border-radius: 0.625rem;
  font-size: 0.8125rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  animation: toast-in 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 220px;
  max-width: 360px;
  border: 1px solid;
}
.toast-success { background: #10b98120; color: #10b981; border-color: #10b98140; }
.toast-error { background: #ef444420; color: #ef4444; border-color: #ef444440; }
.toast-info { background: #6366f120; color: #818cf8; border-color: #6366f140; }
.toast-warning { background: #f59e0b20; color: #f59e0b; border-color: #f59e0b40; }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20px); }
}

/* Modal */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.modal.hidden { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); }
.modal-box {
  position: relative;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 1rem;
  padding: 1.5rem;
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1;
  box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}

/* Asset card */
.asset-card {
  background: #0f172a;
  border: 2px solid #334155;
  border-radius: 0.625rem;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}
.asset-card:hover { border-color: #6366f1; }
.asset-card.selected { border-color: #6366f1; background: #6366f115; }
.asset-card img, .asset-card video {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}
.asset-card .asset-name {
  padding: 0.25rem 0.375rem;
  font-size: 0.65rem;
  color: #94a3b8;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: #0f172a;
}
.asset-card .asset-delete {
  position: absolute;
  top: 4px;
  right: 4px;
  background: #ef444490;
  border: none;
  border-radius: 4px;
  color: #fff;
  font-size: 0.65rem;
  width: 20px;
  height: 20px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}
.asset-card:hover .asset-delete { display: flex; }
.asset-card .asset-rename {
  position: absolute;
  top: 4px;
  right: 28px;
  background: #6366f190;
  border: none;
  border-radius: 4px;
  color: #fff;
  font-size: 0.65rem;
  width: 20px;
  height: 20px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}
.asset-card:hover .asset-rename { display: flex; }

/* Block item */
.block-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.block-item:hover { border-color: #6366f1; background: #6366f108; }
.block-item .block-name { font-size: 0.8125rem; font-weight: 500; color: #e2e8f0; flex: 1; }
.block-item .block-cat { font-size: 0.7rem; color: #64748b; }

/* Landing block item */
.landing-block-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 0.5rem;
}
.landing-block-item .drag-handle {
  color: #475569;
  cursor: grab;
  font-size: 0.875rem;
  flex-shrink: 0;
}
.landing-block-item .block-label {
  font-size: 0.8125rem;
  color: #e2e8f0;
  flex: 1;
}

/* Layout card */
.layout-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 0.875rem;
  overflow: hidden;
  transition: border-color 0.15s ease;
}
.layout-card:hover { border-color: #6366f1; }

/* Theme swatch */
.color-swatch {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.1);
  cursor: help;
  flex-shrink: 0;
}

/* Tab content transitions */
.tab-content { animation: fade-in 0.2s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* Responsive nav scrolling on mobile */
@media (max-width: 640px) {
  #main-tabs { overflow-x: auto; gap: 0.25rem; }
  .tab-btn { padding: 0.375rem 0.625rem; font-size: 0.75rem; }
}

/* Effect chip (prompt picker) */
.effect-chip {
  display: inline-flex; align-items: center; padding: 0.25rem 0.625rem;
  border-radius: 9999px; border: 1px solid #334155; background: #1e293b;
  color: #94a3b8; cursor: pointer; transition: all 0.15s ease; font-size: 0.8125rem;
}
.effect-chip:hover { border-color: #6366f1; color: #e0e7ff; }
.effect-chip.active { border-color: #6366f1; background: #6366f133; color: #a5b4fc; }