:root {
  --ink: #f7f8fb;
  --muted: #c6cad9;
  --bg-0: #05070d;
  --bg-1: #0d1320;
  --bg-2: #112746;
  --accent-1: #46f2cd;
  --accent-2: #ffb870;
  --accent-3: #82b7ff;
  --panel: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.16);
  --mx: 50%;
  --my: 50%;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -5%, #113065 0%, transparent 50%),
    radial-gradient(900px 500px at 95% -10%, #3a1f47 0%, transparent 45%),
    linear-gradient(170deg, var(--bg-0) 0%, var(--bg-1) 40%, var(--bg-2) 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(20px, 4vw, 56px);
  backdrop-filter: blur(12px);
  background: rgba(5, 9, 16, 0.65);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a:hover {
  color: var(--ink);
}

main {
  width: min(1140px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 80px);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  padding: clamp(34px, 8vw, 96px) 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-1);
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.1;
}

h1 {
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(2.2rem, 6vw, 4.4rem);
  font-weight: 700;
}

.lead {
  max-width: 650px;
  margin: 18px 0 0;
  color: #d8dced;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  line-height: 1.6;
}

.hero-cta {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 700;
  font-size: 0.93rem;
  border: 1px solid var(--border);
}

.btn-primary {
  background: linear-gradient(120deg, var(--accent-1), #5ef0ff);
  color: #04232a;
  border: none;
}

.btn-ghost {
  color: var(--ink);
}

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  width: 100%;
  justify-self: center;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background:
    radial-gradient(circle at var(--mx) var(--my), rgba(255, 255, 255, 0.16), transparent 38%),
    linear-gradient(170deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.02));
  overflow: hidden;
  transform-style: preserve-3d;
  transform: perspective(1000px) rotateX(calc((var(--my) - 50%) / 9)) rotateY(calc((50% - var(--mx)) / 9));
  transition: transform 120ms linear;
}

.orb,
.ring,
.glow {
  position: absolute;
  left: 50%;
  top: 50%;
}

.orb {
  width: 34%;
  aspect-ratio: 1 / 1;
  translate: -50% -50%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffffff, var(--accent-3) 45%, #13243f 70%);
  box-shadow: 0 0 60px rgba(130, 183, 255, 0.75);
  animation: pulse 4s ease-in-out infinite;
}

.ring {
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  translate: -50% -50%;
}

.ring-a {
  width: 50%;
  aspect-ratio: 1 / 1;
  animation: orbit 10s linear infinite;
}

.ring-b {
  width: 70%;
  aspect-ratio: 1 / 1;
  border-color: rgba(70, 242, 205, 0.35);
  animation: orbit 16s linear infinite reverse;
}

.ring-c {
  width: 86%;
  aspect-ratio: 1 / 1;
  border-color: rgba(255, 184, 112, 0.33);
  animation: orbit 24s linear infinite;
}

.glow {
  width: 22%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  filter: blur(1px);
}

.glow-a {
  background: rgba(70, 242, 205, 0.6);
  transform: translate(80%, -135%);
  animation: bob 9s ease-in-out infinite;
}

.glow-b {
  background: rgba(255, 184, 112, 0.55);
  transform: translate(-175%, 115%);
  animation: bob 11s ease-in-out infinite reverse;
}

.panel {
  margin: 34px 0;
  padding: clamp(20px, 4vw, 30px);
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 18px;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards {
  align-items: start;
}

article {
  padding: 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

article img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 12px;
}

.venue-card {
  overflow: hidden;
}

.venue-image {
  display: block;
  width: 100%;
  height: 220px;
  max-width: 100%;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 12px;
  position: static;
}

article h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

article p,
article li,
#speakers p {
  margin: 0;
  color: #d4d9ec;
  line-height: 1.6;
}

ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.speaker-strip {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.speaker-strip span {
  border-left: 3px solid var(--accent-1);
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.03);
}

.photo-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.photo-grid figure {
  grid-column: span 4;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.03);
}

.photo-grid figure.wide {
  grid-column: span 8;
}

.photo-grid img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  display: block;
  transition: transform 420ms ease, filter 420ms ease;
}

.photo-grid figure:hover img {
  transform: scale(1.04);
  filter: saturate(1.08) contrast(1.03);
}

footer {
  padding: 28px 16px 40px;
  text-align: center;
  color: var(--muted);
}

@keyframes orbit {
  to {
    transform: translate(-50%, -50%) rotate(1turn);
  }
}

@keyframes pulse {
  0%,
  100% {
    scale: 1;
  }
  50% {
    scale: 1.08;
  }
}

@keyframes bob {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -14px;
  }
}

@media (max-width: 1000px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 42px;
  }

  .hero-copy {
    order: 2;
  }

  .hero-visual {
    order: 1;
    max-width: min(520px, 100%);
  }

  .grid.two,
  .grid.three {
    grid-template-columns: 1fr;
  }

  .photo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .photo-grid figure,
  .photo-grid figure.wide {
    grid-column: span 1;
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

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