/* ==========================================================================
   Loading states
   1) First-visit video intro (~2.5s) - shown only once per browsing
      session, on the very first page load (index.html or 404.html);
      gated in js/loader.js via sessionStorage.
   2) Shimmer skeleton screen - shown on every other page load/navigation
      while the real page mounts.
   ========================================================================== */

/* ------------------------- Video intro loader ------------------------- */

.intro-loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #001838 0%, var(--color-navy) 100%);
  transition: opacity var(--duration-slow) var(--ease-standard), visibility 0s linear var(--duration-slow);
}

.intro-loader.loader-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-loader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6);
}

.intro-video-frame {
  position: relative;
  width: 160px;
  height: 160px;
  border-radius: var(--radius-pill);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
}

.intro-video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro-logo-fallback {
  position: absolute;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-pill);
  object-fit: cover;
  opacity: 0;
}

.intro-spin-ring {
  position: absolute;
  inset: -6px;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  border-top-color: var(--color-accent);
  animation: intro-spin 1.4s linear infinite;
}

@keyframes intro-spin {
  to { transform: rotate(360deg); }
}

.intro-text {
  text-align: center;
}

.intro-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 24px;
  color: var(--color-overlay-text);
}

.intro-subtitle {
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

.intro-progress {
  width: 160px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.15);
  overflow: hidden;
}

.intro-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  border-radius: var(--radius-pill);
  animation: intro-progress 1.8s var(--ease-standard) forwards;
}

@keyframes intro-progress {
  0% { width: 0%; }
  100% { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-spin-ring,
  .intro-progress-bar {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
  }
}

/* ------------------------- Page content reveal ------------------------- */

.page-content {
  opacity: 0;
  visibility: hidden;
}

.page-content.revealed {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--duration-slow) var(--ease-standard);
}

#skeletonRoot {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  z-index: 50;
}

#skeletonRoot.skeleton-hidden {
  display: none;
}

/* ------------------------- Skeleton page shell ------------------------- */

#skeletonRoot {
  background: var(--color-white);
}

#skeletonRoot .skel-nav {
  height: var(--nav-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  background: rgba(247, 249, 251, 0.8);
}

#skeletonRoot .skel-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
}

#skeletonRoot .skel-block {
  border-radius: var(--radius-sm);
}

#skeletonRoot .skel-nav-links {
  display: flex;
  gap: var(--space-6);
}

#skeletonRoot .skel-hero {
  min-height: 600px;
  padding: 115px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#skeletonRoot .skel-hero-inner {
  max-width: var(--max-width);
  width: 100%;
  display: flex;
  gap: var(--space-12);
  align-items: center;
  padding: 0 var(--space-6);
}

#skeletonRoot .skel-hero-left {
  flex: 1 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

#skeletonRoot .skel-hero-card {
  flex: 1 0 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hero-card);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

#skeletonRoot .skel-hero-tabs {
  display: flex;
  gap: var(--space-6);
}

#skeletonRoot .skel-hero-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

#skeletonRoot .skel-section {
  padding: var(--space-12) 0;
}

#skeletonRoot .skel-cards-row {
  display: flex;
  gap: var(--space-6);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

#skeletonRoot .skel-card {
  flex: 1 0 0;
  height: 256px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 25px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#skeletonRoot .skel-route-card {
  flex: 1 0 0;
  height: 400px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

#skeletonRoot .skel-route-card .skel-route-img {
  height: 192px;
}

#skeletonRoot .skel-route-card .skel-route-body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ------------------------- Extra full-page skeleton shapes -------------
   Added so every page (not just the landing page) can show a shape
   matching its own real layout instead of just the nav bar. ------- */

#skeletonRoot .skel-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

#skeletonRoot .skel-page-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

#skeletonRoot .skel-tabs {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

#skeletonRoot .skel-list-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

#skeletonRoot .skel-list-row-body {
  flex: 1 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

#skeletonRoot .skel-avatar {
  border-radius: 50%;
  flex-shrink: 0;
}

#skeletonRoot .skel-two-col {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
}

#skeletonRoot .skel-main-col {
  flex: 2 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

#skeletonRoot .skel-side-col {
  flex: 1 0 0;
  min-width: 280px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

#skeletonRoot .skel-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

#skeletonRoot .skel-photo {
  border-radius: var(--radius-lg);
  width: 100%;
}

#skeletonRoot .skel-auth-shell {
  display: flex;
  min-height: 100vh;
}

#skeletonRoot .skel-auth-visual {
  flex: 1 0 0;
  min-height: 100%;
}

#skeletonRoot .skel-auth-form {
  flex: 1 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
}

#skeletonRoot .skel-auth-card {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

#skeletonRoot .skel-seat-grid {
  display: grid;
  grid-template-columns: repeat(4, 42px);
  gap: 10px;
}

#skeletonRoot .skel-seat {
  width: 42px;
  height: 38px;
  border-radius: 8px;
}

#skeletonRoot .skel-centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-12) var(--space-6);
  max-width: 480px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  #skeletonRoot .skel-two-col,
  #skeletonRoot .skel-auth-shell {
    flex-direction: column;
  }
  #skeletonRoot .skel-auth-visual {
    display: none;
  }
  #skeletonRoot .skel-cards-row {
    flex-direction: column;
  }
}