/*
  Event 08 — standalone HTML/CSS/JS implementation.
  No build step, no framework, no external dependency: copy these three
  files into any project and open index.html as-is.
*/

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

:root {
  --white: #ffffff;
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --blue-600: #2563eb;
  --font-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji";
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--slate-900);
  background-color: var(--white);
  line-height: 1.5;
}

.events {
  padding: clamp(4rem, 3.5rem + 2vw, 6rem) clamp(1rem, 0.3rem + 3vw, 2rem);
}

.events__inner {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
}

.intro {
  max-width: 34rem;
  margin: 0 auto;
  text-align: center;
}

.kicker {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--blue-600);
}

.heading {
  margin: 0.75rem 0 0;
  font-weight: 600;
  font-size: clamp(1.875rem, 1.5rem + 1.9vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--slate-900);
}

.banner {
  position: relative;
  margin-top: 3rem;
  overflow: hidden;
  border-radius: 1.5rem;
}

.banner__photo {
  display: block;
  width: 100%;
  height: 18rem;
  object-fit: cover;
}

.banner__overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to top, rgba(2, 6, 23, 0.9), rgba(2, 6, 23, 0.4) 55%, transparent);
}

.banner__body {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
}

.countdown {
  width: fit-content;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--white);
}

.banner__title {
  margin: 1rem 0 0;
  max-width: 32rem;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
}

.banner__desc {
  margin: 0.5rem 0 0;
  max-width: 28rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
}

.banner__meta {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background-color: var(--white);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-900);
  text-decoration: none;
  transition: background-color 150ms ease;
}

.cta:hover {
  background-color: var(--slate-200);
}

.cta:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

.banner__datetime {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.card {
  display: block;
  border-radius: 0.75rem;
  border: 1px solid var(--slate-200);
  padding: 1.25rem;
  text-decoration: none;
  transition: border-color 150ms ease;
}

.card:hover {
  border-color: var(--slate-300);
}

.card:hover .card__title {
  color: var(--blue-600);
}

.card:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: 2px;
}

.tag {
  display: inline-block;
  border-radius: 999px;
  background-color: var(--slate-100);
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--slate-500);
}

.card__title {
  margin: 0.75rem 0 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-900);
  transition: color 150ms ease;
}

.card__date {
  margin: 0.25rem 0 0;
  font-size: 0.75rem;
  color: var(--slate-400);
}

@media (min-width: 640px) {
  .banner__photo {
    height: 24rem;
  }

  .banner__body {
    padding: 2.5rem;
  }

  .banner__title {
    font-size: 1.875rem;
  }

  .banner__desc {
    font-size: 1rem;
  }

  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/*
  Event 08 — featured-card emphasis transition: the "next up" banner
  settles in with a more pronounced scale-and-shadow arrival than any
  other resource in the collection, and its countdown chip carries a
  slow, restrained breathing glow once it lands — a clear visual
  emphasis over the plain-fade grid cards beneath it. Disabled entirely
  under reduced motion: outside the media query below, the banner and
  every card already render at their final, fully visible state, and the
  countdown chip holds at its resting glow with no pulsing.
*/
@media (prefers-reduced-motion: no-preference) {
  @keyframes al-event08-banner {
    from {
      opacity: 0;
      transform: scale(0.97);
      box-shadow: 0 0 0 0 rgba(15, 23, 42, 0);
    }
    to {
      opacity: 1;
      transform: scale(1);
      box-shadow: 0 30px 60px -30px rgba(15, 23, 42, 0.35);
    }
  }

  @keyframes al-event08-glow {
    0%,
    100% {
      box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.15);
    }
    50% {
      box-shadow: 0 0 0 6px rgba(255, 255, 255, 0);
    }
  }

  @keyframes al-event08-card {
    from {
      opacity: 0;
      transform: translateY(14px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .banner {
    animation: al-event08-banner 700ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .countdown {
    animation: al-event08-glow 3200ms 700ms ease-in-out infinite;
  }

  .card {
    animation: al-event08-card 500ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }
}
Event 08

Requirements

Dependencies

Usage
