@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Saira:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #0a0c12;
  --bg-2: #0f121b;
  --bg-3: #151925;
  --panel: #11141d;
  --panel-2: #181c27;
  --accent: #ff8800;
  --accent-2: #ffaa33;
  --accent-glow: rgba(255, 136, 0, 0.28);
  --text: #f1f2f5;
  --text-dim: #a7aebf;
  --text-muted: #6d7589;
  --border: rgba(255, 136, 0, 0.18);
  --radius: 18px;
  --radius-sm: 10px;
  --max: 1200px;
  --speed: 0.35s;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Saira', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

/* Background atmosphere */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 15% 15%, rgba(255, 136, 0, 0.08), transparent 28%),
    radial-gradient(circle at 85% 30%, rgba(255, 136, 0, 0.05), transparent 22%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 136, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 136, 0, 0.05) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: radial-gradient(circle at 50% 0%, black 0%, transparent 75%);
}

/* Typography */
h1, h2, h3, h4, .brand {
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 0.4em;
  background: linear-gradient(90deg, var(--text) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  color: var(--text-dim);
  font-size: 1.1rem;
  max-width: 700px;
  margin-bottom: 2.5rem;
}

/* Layout */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
}

section {
  padding: 6rem 0;
  position: relative;
}

section:nth-child(even) {
  background: linear-gradient(180deg, transparent, rgba(255, 136, 0, 0.025), transparent);
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 12, 18, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  font-weight: 900;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 1.2rem;
  list-style: none;
}

.nav-links a {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: color var(--speed), background var(--speed), box-shadow var(--speed);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--accent);
  background: rgba(255, 136, 0, 0.08);
  box-shadow: 0 0 18px var(--accent-glow);
  outline: none;
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0 10px;
}

.burger span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--speed), opacity var(--speed);
}

.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8rem;
  padding-bottom: 5rem;
}

.hero-grid {
  display: grid;
  width: 90%;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero h1 .accent-word {
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow), 0 0 60px rgba(255, 136, 0, 0.15);
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 1rem 1.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform var(--speed), box-shadow var(--speed), background var(--speed), border-color var(--speed);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  box-shadow: 0 0 28px rgba(255, 136, 0, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 42px rgba(255, 136, 0, 0.45);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  transition: transform var(--speed), box-shadow var(--speed);
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 50px rgba(255, 136, 0, 0.12);
}

.stat-number {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.3rem;
}

.hero-image {
  margin: 0 auto;
  max-width: 600px;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), 0 0 60px rgba(255, 136, 0, 0.08);
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 136, 0, 0.15), transparent 60%);
  z-index: 1;
  pointer-events: none;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-image:hover img {
  transform: scale(1.04);
}

/* Cards & Grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.record-card,
.challenge-card,
.community-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--speed), box-shadow var(--speed), border-color var(--speed);
}

.record-card::before,
.challenge-card::before,
.community-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.7;
}

.record-card:hover,
.challenge-card:hover,
.community-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 136, 0, 0.4);
  box-shadow: 0 20px 60px rgba(255, 136, 0, 0.1);
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  border-radius: 99px;
  background: rgba(255, 136, 0, 0.12);
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.card-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 0.8rem;
}

.card-meta strong {
  color: var(--accent);
  font-weight: 700;
}

.card-desc {
  color: var(--text-dim);
  font-size: 0.98rem;
}

/* Section images */
.section-image {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 2.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.section-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* Difficulty badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 99px;
  border: 1px solid;
}

.badge-easy {
  color: #3ccf4a;
  border-color: rgba(60, 207, 74, 0.4);
  background: rgba(60, 207, 74, 0.08);
}

.badge-medium {
  color: var(--accent);
  border-color: rgba(255, 136, 0, 0.4);
  background: rgba(255, 136, 0, 0.08);
}

.badge-hard {
  color: #ff4d4d;
  border-color: rgba(255, 77, 77, 0.4);
  background: rgba(255, 77, 77, 0.08);
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.98rem;
}

.leaderboard thead {
  background: rgba(255, 136, 0, 0.1);
}

.leaderboard th {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--accent);
  padding: 1.1rem 1rem;
  text-align: left;
}

.leaderboard td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

.leaderboard tbody tr:last-child td {
  border-bottom: none;
}

.leaderboard tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.leaderboard tbody tr:hover {
  background: rgba(255, 136, 0, 0.06);
}

.rank {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  color: var(--accent);
  font-size: 1.1rem;
}

/* Decorative elements */
.glow-orb {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 136, 0, 0.15), transparent 70%);
  filter: blur(40px);
  z-index: -1;
}

.glow-orb-right {
  right: -120px;
  top: 20%;
}

.glow-orb-left {
  left: -120px;
  bottom: 10%;
}

/* Footer */
footer {
  background: var(--bg-3);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.footer-brand span {
  color: var(--accent);
}

.footer-desc {
  color: var(--text-dim);
  font-size: 0.95rem;
  max-width: 280px;
}

.footer-title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
  transition: color var(--speed);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Legal pages */
.legal-page {
  padding-top: 8rem;
  padding-bottom: 4rem;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 2.6rem;
  margin-bottom: 0.5rem;
}

.legal-date {
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  display: block;
}

.legal-content h2 {
  font-size: 1.4rem;
  color: var(--accent);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.legal-content p {
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.legal-content ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dim);
}

.legal-content li {
  margin-bottom: 0.5rem;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate {
  animation: fadeUp 0.8s ease forwards;
}

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

  .hero-image {
    order: -1;
  }

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

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

@media (max-width: 720px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 12, 18, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    gap: 0.5rem;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 0.8rem 1rem;
  }

  .burger {
    display: flex;
  }

  section {
    padding: 4rem 0;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .leaderboard th,
  .leaderboard td {
    padding: 0.8rem 0.6rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 420px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .cta-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* Focus states */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}