:root {
  --bg: #f8f8f8;
  --bg-soft: #ffffff;
  --text: #0f0f0f;
  --muted: #5a5a5a;
  --line: rgba(0, 0, 0, 0.14);
  --glass: rgba(255, 255, 255, 0.6);
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.1);
}

html[data-theme="dark"] {
  --bg: #0d0d0d;
  --bg-soft: #151515;
  --text: #f8f8f8;
  --muted: #bcbcbc;
  --line: rgba(255, 255, 255, 0.18);
  --glass: rgba(20, 20, 20, 0.55);
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 20%, rgba(0, 0, 0, 0.06), transparent 35%),
    radial-gradient(circle at 78% 12%, rgba(0, 0, 0, 0.04), transparent 34%),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  z-index: -1;
}

html[data-theme="dark"] .bg-layer {
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.08), transparent 35%),
    radial-gradient(circle at 78% 12%, rgba(255, 255, 255, 0.05), transparent 34%),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
}

.nav-wrap {
  position: sticky;
  top: 0;
  padding: 1rem;
  z-index: 50;
}

.navbar {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items:center;
  justify-content: space-between;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  box-shadow: var(--shadow);
  padding: 0.55rem 0.9rem;
}

.brand {
  font-weight: 700;
  font-family: serif;
  padding-inline: 10px ;
  letter-spacing: 0.12rem;
  font-size: 1rem;
  font-style: italic;
}

.desktop-center {
  justify-self: center;
}

.theme-toggle {
  justify-self: end;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem 0.35rem 0.4rem;
  cursor: pointer;
  font: inherit;
}

.toggle-dot {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--text);
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.2rem 1rem 3.2rem;
}

.hero {
  text-align: center;
  padding: 3rem 0 2.2rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16rem;
  color: var(--text);
  font-size: 0.77rem;
  background: color-mix(in srgb, var(--glass) 85%, transparent);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  width: fit-content;
  display: flex;
  justify-self: center;
  padding: 0.16rem 0.58rem;
  margin-bottom: 0.8rem;
}

h1 {
  font-size: clamp(2rem, 7vw, 4.4rem);
  line-height: 1.03;
  margin: 0;
}

.sub {
  max-width: 62ch;
  margin: 1rem auto 0;
  color: var(--muted);
  font-size: 1.03rem;
}

.download-btn {
  text-decoration: none;
  color: var(--bg);
  background: var(--text);
  border: 1px solid var(--text);
  padding: 0.62rem 1.2rem;
  border-radius: 999px;
  display: inline-block;
  font-weight: 600;
  transition: transform 160ms ease, opacity 160ms ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  opacity: 0.92;
}

.download-btn.mobile {
  margin-top: 1.5rem;
}

.gallery {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  transform: translateY(8px);
  opacity: 0;
  animation: rise 700ms ease forwards;
}

.card:nth-child(2) {
  animation-delay: 120ms;
}

.card:nth-child(3) {
  animation-delay: 240ms;
}

.card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.card figcaption {
  padding: 0.78rem 0.9rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  padding: 1.2rem 1rem 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

@keyframes rise {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 860px) {
  .navbar {
    grid-template-columns: 1fr auto;
    gap: 0.5rem;
  }

  .desktop-center {
    display: none;
  }

  .download-btn.mobile {
    display: inline-block;
  }

  .gallery {
    grid-template-columns: 1fr;
  }

  .card img {
    height: 240px;
  }
}