/* ============================================================
   BareTools Motion & Micro-interactions Refine
   Cards stagger entrance, skeleton loading, button states, etc.
   Loaded AFTER frontend-refine.css
   ============================================================ */

/* ===== Card / list reveal on scroll ===== */

.reveal-card {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.35s var(--ease-out),
    transform 0.35s var(--ease-out);
  will-change: opacity, transform;
}

.reveal-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays — applied inline via style for precise control,
   but we also provide utility classes as fallback */
.reveal-card.delay-1 { transition-delay: 0.04s; }
.reveal-card.delay-2 { transition-delay: 0.08s; }
.reveal-card.delay-3 { transition-delay: 0.12s; }
.reveal-card.delay-4 { transition-delay: 0.16s; }
.reveal-card.delay-5 { transition-delay: 0.20s; }
.reveal-card.delay-6 { transition-delay: 0.24s; }
.reveal-card.delay-7 { transition-delay: 0.28s; }
.reveal-card.delay-8 { transition-delay: 0.32s; }
.reveal-card.delay-9 { transition-delay: 0.36s; }
.reveal-card.delay-10 { transition-delay: 0.40s; }

@media (prefers-reduced-motion: reduce) {
  .reveal-card {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ===== Page transition ===== */

.page {
  animation: pageEnter 200ms var(--ease-out) both;
}

@keyframes pageEnter {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Fade content during route transition */
.app-main.is-transitioning {
  opacity: 0.5;
  transition: opacity 150ms var(--ease-out);
}

@media (prefers-reduced-motion: reduce) {
  .page {
    animation: none;
    opacity: 1;
  }
  .app-main.is-transitioning {
    opacity: 1;
    transition: none;
  }
}

/* ===== Button loading state ===== */

.btn.is-loading,
.btn-primary.is-loading,
.btn-secondary.is-loading,
.btn-ghost.is-loading,
.btn-signup.is-loading,
.hero-cta-btn.is-loading {
  pointer-events: none;
  position: relative;
}

.btn.is-loading .btn-text,
.btn-primary.is-loading .btn-text,
.btn-secondary.is-loading .btn-text {
  opacity: 0.6;
}

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-top-color: transparent;
  border-radius: 50%;
  animation: btnSpin 0.7s linear infinite;
  flex-shrink: 0;
  display: none;
}

.btn.is-loading .btn-spinner,
.btn-primary.is-loading .btn-spinner,
.btn-secondary.is-loading .btn-spinner {
  display: inline-block;
}

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

@media (prefers-reduced-motion: reduce) {
  .btn-spinner {
    animation-duration: 0.01s;
  }
}

/* ===== Skeleton loading ===== */

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in oklch, var(--bg-card) 70%, transparent) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 1.6s ease-in-out infinite;
}

@keyframes skeletonShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton::after {
    animation: none;
  }
}

/* Skeleton grid (for tool/article card lists) */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.skeleton-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skeleton-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.skeleton-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.skeleton-line {
  height: 14px;
  border-radius: 4px;
  background: var(--bg-secondary);
}

.skeleton-line.short { width: 40%; }
.skeleton-line.medium { width: 70%; }
.skeleton-line.long { width: 100%; }

.skeleton-card-meta {
  display: flex;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-2);
}

.skeleton-badge {
  width: 48px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
}

/* Skeleton for list items (table-like) */
.skeleton-list {
  display: flex;
  flex-direction: column;
}

.skeleton-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
}

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

.skeleton-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

/* ===== Tooltip: fix upward occlusion ===== */

/* Force tooltip to appear below trigger when near top of viewport,
   or always below for consistency in interactive areas */

.tooltip::after,
[data-tooltip]::after {
  bottom: auto;
  top: calc(100% + 8px);
}

/* Keep upward for nav icons (plenty of space below header) */
.nav-icon-btn.tooltip::after,
.nav-icon-btn[data-tooltip]::after {
  top: auto;
  bottom: calc(100% + 8px);
}

/* ===== Code block copy button ===== */

.code-copy-btn,
.mdx-code-copy,
.prompt-copy-btn {
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.code-copy-btn.copied,
.mdx-code-copy.copied,
.prompt-copy-btn.copied {
  background: color-mix(in oklch, var(--success) 20%, transparent);
  color: var(--success);
  border-color: color-mix(in oklch, var(--success) 40%, transparent);
}

/* ===== Modal entrance consistency ===== */

.modal {
  transform: scale(0.96) translateY(4px);
  opacity: 0;
  transition:
    transform var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out);
}

.modal-overlay.active .modal,
.modal-overlay.is-active .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal-overlay {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}

.modal-overlay.active,
.modal-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

@media (prefers-reduced-motion: reduce) {
  .modal {
    transition: none;
  }
  .modal-overlay {
    transition: none;
  }
}

/* ===== Star rating interaction ===== */

.stars-interactive {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.stars-interactive .star-btn {
  width: 32px;
  height: 32px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition:
    color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.stars-interactive .star-btn svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

@media (hover: hover) and (pointer: fine) {
  .stars-interactive:hover .star-btn {
    color: var(--warning);
  }

  .stars-interactive .star-btn:hover ~ .star-btn {
    color: var(--text-muted);
  }

  .stars-interactive .star-btn:hover {
    transform: scale(1.1);
  }
}

.stars-interactive .star-btn.selected {
  color: var(--warning);
}

.stars-interactive .star-btn:focus-visible {
  outline: 2px solid var(--accent-ring);
  outline-offset: 1px;
}

.stars-interactive .star-btn:active {
  transform: scale(0.95);
}

/* ===== Scrollbar polish ===== */

/* Custom scrollbar for data-dense areas */
.admin-table-wrap::-webkit-scrollbar,
.modal-body::-webkit-scrollbar,
.admin-sidebar-nav::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.admin-table-wrap::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track,
.admin-sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.admin-table-wrap::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb,
.admin-sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--grey-300);
  border-radius: 4px;
}

[data-theme="dark"] .admin-table-wrap::-webkit-scrollbar-thumb,
[data-theme="dark"] .modal-body::-webkit-scrollbar-thumb,
[data-theme="dark"] .admin-sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--grey-600);
}

.admin-table-wrap::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover,
.admin-sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: var(--grey-400);
}

/* ===== Filter chip active emphasis ===== */

.filter-chip.active {
  position: relative;
}

/* ===== Tool card hover — more precise control ===== */

@media (hover: hover) and (pointer: fine) {
  .tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
  }
}

.tool-card {
  transform: translateZ(0); /* GPU hint for smooth animation */
}

/* ===== TOC active indicator ===== */

.toc-item.active {
  position: relative;
  font-weight: var(--fw-semibold);
  color: var(--accent);
}

/* ===== Article prose refinement ===== */

.article-content p,
.detail-content p,
.prose p {
  max-width: var(--measure);
}

/* ===== Fade in for search results ===== */

.search-results-item {
  animation: fadeInUp 0.2s var(--ease-out) both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .search-results-item {
    animation: none;
    opacity: 1;
  }
}

/* ===== Splash — faster, more restrained ===== */

.splash-page .splash-logo,
.splash-page .splash-title,
.splash-page .splash-divider,
.splash-page .splash-lines,
.splash-page .splash-enter-btn {
  animation-duration: 400ms !important;
}

/* Cap total splash sequence at 600ms */
.splash-page .splash-enter-btn {
  animation-delay: 0.3s !important;
}

/* ===== Nav scroll state — smoother ===== */

.nav-bar {
  will-change: background-color, box-shadow;
}

/* ===== Tabular nums for all metric displays ===== */

.metric,
.stat-number,
.kpi-value,
.price-value,
.rating-num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ===== List pagination smooth content swap ===== */

.tools-grid-wrapper,
.articles-list-wrapper,
.list-content-wrapper {
  min-height: 400px;
}