:root {
  --vpw-bg: #f5f7fb;
  --vpw-card: #ffffff;
  --vpw-border: #e5e7eb;
  --vpw-text: #111827;
  --vpw-muted: #6b7280;
  --vpw-shadow: rgba(0, 0, 0, 0.06);
}

* {
  box-sizing: border-box;
}

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

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 18px 44px;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.title {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin-top: 6px;
  color: var(--vpw-muted);
  font-size: 13px;
}

.sample-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-btn,
.scroll-btn {
  border: 1px solid var(--vpw-border);
  background: var(--vpw-card);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 1px 2px var(--vpw-shadow);
}

.nav-btn:active,
.scroll-btn:active {
  transform: translateY(0.5px);
}

.sample-meta {
  min-width: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.sample-id {
  font-weight: 700;
  font-size: 14px;
}

.sample-counter {
  font-size: 12px;
  color: var(--vpw-muted);
}

.sample-select {
  border: 1px solid var(--vpw-border);
  background: var(--vpw-card);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  box-shadow: 0 1px 2px var(--vpw-shadow);
}

.card {
  background: var(--vpw-card);
  border: 1px solid var(--vpw-border);
  border-radius: 12px;
  box-shadow: 0 1px 3px var(--vpw-shadow);
  padding: 14px 16px;
  margin: 12px 0;
}

.card-title {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #4b5563;
  font-weight: 800;
  margin-bottom: 10px;
}

.prompt-text {
  white-space: pre-wrap;
  line-height: 1.45;
  font-size: 14px;
  color: var(--vpw-text);
  background: #fafafa;
  border: 1px solid var(--vpw-border);
  border-radius: 10px;
  padding: 12px 12px;
  max-height: 200px;
  overflow: auto;
}

.gt-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
}

.gt-frames {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: start;
}

.frame-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.frame-label {
  font-size: 11px;
  color: var(--vpw-muted);
  font-weight: 800;
  text-align: center;
}

.frame-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border: 1px solid var(--vpw-border);
  border-radius: 10px;
  background: #ffffff;
}

.gt-videos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.video-block {
  position: relative;
  border: 1px solid var(--vpw-border);
  border-radius: 12px;
  padding: 10px;
  background: var(--vpw-card);
}

.badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(17, 24, 39, 0.92);
  color: #ffffff;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 10px;
}

.video {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 10px;
  background: #0b1220;
  display: block;
}

.models-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.models-scroll {
  display: flex;
  align-items: center;
  gap: 10px;
}

.model-buttons {
  flex: 1;
  display: flex;
  gap: 8px;
  overflow: auto;
  padding: 4px;
  scroll-behavior: smooth;
}

.model-btn {
  white-space: nowrap;
  border: 1px solid var(--vpw-border);
  background: var(--vpw-card);
  padding: 9px 12px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 1px 2px var(--vpw-shadow);
}

.model-btn[aria-selected="true"] {
  background: #111827;
  color: #ffffff;
  border-color: #111827;
}

.model-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.footer {
  margin-top: 14px;
  color: var(--vpw-muted);
  font-size: 12px;
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  .gt-grid {
    grid-template-columns: 1fr;
  }

  .gt-videos {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .gt-frames {
    grid-template-columns: 1fr;
  }

  .sample-meta {
    min-width: 120px;
  }
}