/* Tokens applied from brand-guidelines/design-tokens.css (source of truth: brand-identity-guide.md). */
@font-face { font-family: "Satoshi"; src: url("https://rsla.io/fonts/Satoshi-Medium.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Satoshi"; src: url("https://rsla.io/fonts/Satoshi-Bold.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }

:root {
  --color-paper: #FFFFFF;
  --color-mist: #F5F5F7;
  --color-hairline: #D2D2D7;
  --color-ink: #1d1d1f;
  --color-anchor: #0070F3;
  --color-anchor-deep: #0059C2;
  --font-sans: "Satoshi", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-h1: clamp(2.125rem, 1.75rem + 1.6vw, 3rem);
  --text-lead: 21px;
  --text-h4: 19px;
  --text-body: 17px;
  --text-label: 15px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --radius: 14px;
  --gutter: clamp(20px, 4vw, 40px);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.header, main {
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding-block: 40px 28px;
}

.logo { flex: none; border-radius: 10px; }

h1 {
  margin: 0;
  font-size: var(--text-h1);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.lead {
  margin: 8px 0 0;
  max-width: 34em;
  font-size: var(--text-lead);
  line-height: 1.45;
}

main { padding-bottom: 64px; }

.grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px 24px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stage {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--color-mist);
  border: 1px solid var(--color-hairline);
}

.facade {
  all: unset;
  position: absolute;
  inset: 0;
  display: block;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), opacity 200ms ease;
}

.facade img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 220ms ease;
}

.play {
  position: absolute;
  left: 16px;
  bottom: 16px;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-anchor);
  color: #fff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
  transition: background-color 150ms ease, transform 160ms var(--ease-out);
}

.play svg { margin-left: 3px; }

.facade:focus-visible {
  outline: 3px solid var(--color-anchor);
  outline-offset: -3px;
  border-radius: var(--radius);
}

.facade:active { transform: scale(0.98); }

@media (hover: hover) and (pointer: fine) {
  .facade:hover img { transform: scale(1.03); }
  .facade:hover .play { background: var(--color-anchor-deep); transform: scale(1.05); }
}

.stage iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  opacity: 0;
  transition: opacity 200ms ease;
}

.card.is-playing iframe { opacity: 1; }
.card.is-playing .facade { opacity: 0; pointer-events: none; }

.meta { display: flex; flex-direction: column; gap: 2px; }

.num {
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-anchor);
}

.title {
  margin: 0;
  font-size: var(--text-h4);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.desc { margin: 4px 0 0; }

.error {
  list-style: none;
  padding: 20px 24px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius);
  background: var(--color-mist);
}

@media (prefers-reduced-motion: reduce) {
  .facade, .facade img, .play { transition: none; }
  .facade:active, .facade:hover img, .facade:hover .play { transform: none; }
}