:root {
  --bg: #0a0a0a;
  --panel: #111111;
  --panel-2: #181818;
  --text: #f5f5f5;
  --muted: #9a9a9a;
  --accent: #38bdf8;
  --accent-2: #7dd3fc;
  --border: #2e2e2e;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.46);
  --sidebar-w: 220px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  padding-left: var(--sidebar-w);
  background: var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  min-height: 100%;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  background: rgba(10, 10, 10, 0.97);
  border-right: 1px solid var(--border);
  overflow-y: auto;
}

.brand {
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem 1rem 1rem;
  background: #000000;
  border-bottom: 1px solid var(--border);
}

.brand-mark {
  width: 100%;
  display: block;
  background: #000000;
}

.brand-text {
  font-family: "Bebas Neue", sans-serif;
  letter-spacing: 0.08em;
  font-size: 1.1rem;
  color: var(--text);
  margin-top: 0.5rem;
}

nav {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 0.15rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.45rem 0.5rem;
  border-radius: 0.35rem;
}

nav a[aria-current="page"] {
  color: var(--text);
}

nav a:hover,
nav a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

main {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100% - 4rem));
  margin: 0 auto 4rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.5rem;
  padding: 3.5rem 0 2.5rem;
}

.hero-copy h1 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2.5rem, 7vw, 5.6rem);
  letter-spacing: 0.03em;
  margin: 0;
  line-height: 0.95;
}

.eyebrow {
  color: var(--accent-2);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
}

.hero-copy p {
  color: var(--muted);
  max-width: 58ch;
}

.cta {
  display: inline-block;
  margin-top: 1rem;
  text-decoration: none;
  color: #071520;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  padding: 0.7rem 1rem;
  border-radius: 0.45rem;
  font-weight: 700;
}

.hero-cards {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(2, 1fr);
  align-content: start;
}

.hero-cards img {
  width: 100%;
  height: 145px;
  object-fit: cover;
  border-radius: 0.6rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(18px);
  animation: cardIn 0.8s ease forwards;
}

.hero-cards img:nth-child(2) {
  animation-delay: 0.15s;
}

.hero-cards img:nth-child(3) {
  animation-delay: 0.3s;
  grid-column: span 2;
  height: 180px;
}

.about,
.gallery-section,
.events,
.sponsors,
.contact {
  background: linear-gradient(155deg, rgba(17, 17, 17, 0.9), rgba(12, 12, 12, 0.8));
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1.2rem;
  margin-top: 1rem;
}

h2 {
  margin: 0 0 0.5rem;
  font-family: "Bebas Neue", sans-serif;
  letter-spacing: 0.05em;
  font-size: 2rem;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-head p,
.about p,
.contact p {
  color: var(--muted);
}

.gallery-root {
  display: grid;
  gap: 1rem;
}

.event-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 0.9rem;
}

.event-card {
  background: rgba(9, 9, 9, 0.82);
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  padding: 0.9rem;
}

.event-date {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent-2);
}

.event-card h3 {
  margin: 0.45rem 0 0.35rem;
  font-size: 1.1rem;
}

.event-card p {
  margin: 0;
  color: var(--muted);
}

.sponsor-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.sponsor-pill {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(22, 22, 22, 0.6), rgba(12, 12, 12, 0.9));
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.sponsor-pill:hover {
  border-color: var(--accent);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 1rem;
  align-items: start;
}

.social-links {
  display: grid;
  gap: 0.5rem;
}

.social-links a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  background: rgba(10, 10, 10, 0.85);
  padding: 0.6rem 0.75rem;
  font-weight: 600;
}

.social-links a:hover {
  border-color: var(--accent);
}

.contact-form {
  display: grid;
  gap: 0.45rem;
}

.contact-form label {
  font-size: 0.88rem;
  color: var(--muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: #0c0c0c;
  color: var(--text);
  border-radius: 0.45rem;
  padding: 0.6rem 0.7rem;
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid #444444;
  border-color: #444444;
}

.contact-form button {
  width: fit-content;
  border: 0;
  border-radius: 0.45rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #071520;
  font-weight: 700;
  padding: 0.65rem 0.95rem;
  cursor: pointer;
}

.form-status {
  margin: 0.2rem 0 0;
  font-size: 0.9rem;
  color: var(--accent-2);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.filter-btn {
  border: 1px solid var(--border);
  background: rgba(16, 16, 16, 0.7);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.filter-btn.active {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #071520;
}

.chapter {
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  padding: 0.85rem;
  background: rgba(10, 10, 10, 0.72);
}

.chapter h3 {
  margin: 0 0 0.7rem;
  font-family: "Bebas Neue", sans-serif;
  letter-spacing: 0.05em;
  font-size: 1.4rem;
  color: var(--accent-2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 0.6rem;
}

.tile {
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  overflow: hidden;
  background: #0f0f0f;
  cursor: pointer;
}

.tile img {
  width: 100%;
  height: 110px;
  object-fit: cover;
  display: block;
  transition: transform 0.25s ease;
}

.tile:hover img {
  transform: scale(1.08);
}

.reveal {
  opacity: 1;
  transform: none;
}

.lightbox {
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: #0c0c0c;
  color: var(--text);
  width: min(92vw, 980px);
  padding: 1rem;
}

.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.72);
}

#lightbox-image {
  width: 100%;
  max-height: 75vh;
  object-fit: contain;
}

.close-btn {
  border: 1px solid var(--border);
  background: #181818;
  color: var(--text);
  border-radius: 0.35rem;
  padding: 0.4rem 0.7rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

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

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .event-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .grid {
    grid-template-columns: repeat(3, minmax(95px, 1fr));
  }
}

@media (max-width: 580px) {
  html,
  body {
    padding-left: 0;
    padding-top: 64px;
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    gap: 0.75rem;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .brand {
    flex-direction: row;
    gap: 0.5rem;
    padding: 0;
    border-bottom: none;
    flex: 0 0 auto;
  }

  .brand-mark {
    width: 1.85rem;
  }

  .brand-text {
    margin-top: 0;
    font-size: 1.25rem;
  }

  nav {
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    flex-wrap: nowrap;
    align-items: center;
    flex: 1 1 auto;
    min-width: 0;
    padding: 0;
    gap: 0.15rem;
  }

  nav a {
    padding: 0.3rem 0.45rem;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(90px, 1fr));
  }

  .tile img {
    height: 128px;
  }
}

.brand-mark img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  background-color: #000000;
  filter: invert(1);
}