:root {
  --bg: #0b0f14;
  --panel: #121821;
  --card: #182232;
  --text: #e7f0ff;
  --muted: #b7c6db;
  --accent: #59b1ff;
  --accent-2: #8ad34d;
  --danger: #ff6969;
}

* {
  box-sizing: border-box;
}

/* Hide slotted children until model-viewer is defined */
:not(:defined)>* {
  display: none;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header,
.site-footer {
  text-align: center;
  padding: 1rem 1rem 0.5rem;
}

.subtitle {
  color: var(--muted);
  margin-top: 0.25rem;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

.gallery {
  display: grid;
  gap: 1rem;
}

.category {
  background: var(--panel);
  border-radius: 12px;
  padding: 1rem;
}

.category h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.cards {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.card {
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
  display: grid;
  grid-template-rows: 160px auto;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card .thumb {
  background: #0d0f14;
  display: grid;
  place-items: center;
}

.card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

.card .info {
  padding: 0.75rem 0.85rem 1rem;
}

.card .title {
  margin: 0 0 0.25rem;
  font-weight: 600;
}

.card .mini {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card .actions {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.5rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  background: var(--accent);
  color: #00101d;
  font-weight: 600;
  border: none;
  cursor: pointer;
}

.btn.secondary {
  background: #263248;
  color: var(--text);
}

.btn:hover {
  filter: brightness(1.05);
}

.btn:active {
  transform: translateY(1px);
}

.loading {
  color: var(--muted);
  padding: 1rem;
}

/* Viewer page */
.viewer-body {
  background: var(--bg);
}

.viewer-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
}

.viewer-header h1 {
  margin: 0;
  font-size: 1.2rem;
}

.back-link {
  color: var(--muted);
}

.viewer-main {
  padding: 0 1rem 1.5rem;
}

.viewer-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.progress-bar {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  overflow: hidden;
}

.update-bar {
  width: 0%;
  height: 100%;
  background-color: var(--accent);
  transition: width 0.3s;
}

.control {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  z-index: 5;
}

.control+.control {
  right: 50px;
}

/* AR button styled like Scene Viewer recommended CTA */
.ar-button,
#ar-button {
  background-image: url('./assets/ar-icon.svg');
  background-repeat: no-repeat;
  background-size: 20px 20px;
  background-position: 12px 50%;
  background-color: #fff;
  color: #4285f4;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  bottom: 132px;
  /* sits above the carousel */
  padding: 0 16px 0 40px;
  font-family: Roboto, Helvetica Neue, Arial, sans-serif;
  font-size: 14px;
  height: 36px;
  line-height: 36px;
  border-radius: 18px;
  border: 1px solid #DADCE0;
  z-index: 4;
}

#ar-button:active {
  background-color: #E8EAED;
}

#ar-button:focus {
  outline: none;
}

#ar-button:focus-visible {
  outline: 1px solid #4285f4;
}

/* AR prompt animation only visible during AR session */
@keyframes circle {
  from {
    transform: translateX(-50%) rotate(0deg) translateX(50px) rotate(0deg);
  }

  to {
    transform: translateX(-50%) rotate(360deg) translateX(50px) rotate(-360deg);
  }
}

@keyframes elongate {
  from {
    transform: translateX(100px);
  }

  to {
    transform: translateX(-100px);
  }
}

.ar-prompt {
  position: absolute;
  left: 50%;
  bottom: 175px;
  animation: elongate 2s infinite ease-in-out alternate;
  display: none;
  z-index: 3;
}

model-viewer[ar-status="session-started"]>.ar-prompt {
  display: block;
}

.ar-prompt>img {
  width: 48px;
  height: 48px;
  animation: circle 4s linear infinite;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
}

/* Tracking failure badge when AR tracking is not available */
.ar-failure {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 175px;
  display: none;
  background-color: #ffffffdd;
  color: #111;
  border-radius: 16px;
  padding: 8px 12px;
  border: none;
  z-index: 4;
}

model-viewer[ar-tracking="not-tracking"]>.ar-failure {
  display: block;
}

/* AR error overlay when AR fails to start */
.ar-error {
  background-color: #ffffffdd;
  color: #111;
  border-radius: 16px;
  padding: 16px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate3d(-50%, -50%, 0);
  transition: opacity 0.3s;
  z-index: 6;
}

.hide {
  opacity: 0;
  visibility: hidden;
  transition: visibility 2s, opacity 1s 1s;
}

/* Bottom carousel slider */
.slider {
  width: 100%;
  text-align: center;
  overflow: hidden;
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  z-index: 3;
}

.slides {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 0 12px;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.slide {
  scroll-snap-align: start;
  flex-shrink: 0;
  width: 92px;
  height: 92px;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  background-color: #fff;
  border-radius: 10px;
  border: 2px solid transparent;
  display: flex;
  cursor: pointer;
}

.slide.selected {
  border-color: #4285f4;
}

.slide:focus {
  outline: none;
}

.slide:focus-visible {
  outline: 1px solid #4285f4;
}

/* Meta under viewer */
.meta {
  padding: 1rem 0.25rem;
}

.meta .desc {
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.meta .actions {
  display: flex;
  gap: 0.5rem;
}

/* Small screens */
@media (max-width: 480px) {
  .card {
    grid-template-rows: 140px auto;
  }

  .card img {
    height: 140px;
  }
}