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

:root {
  --bg:        #0A0A0A;
  --card:      #1D1C1C;
  --card2:     #232323;
  --border:    #363636;
  --green:     #86efac;
  --blue:      #ade8f4;
  --white:     #ffffff;
  --muted:     #a0a0a0;
  --danger:    #f87171;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: 'Syne', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── NOISE OVERLAY ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 2.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,10,0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.logo {
  font-family: 'Space Mono', monospace;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}
.logo .side   { color: var(--green); }
.logo .quests { color: var(--blue); }

nav a.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color .2s;
}
nav a.nav-link:hover { color: var(--white); }

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 7rem 2rem 4rem;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(134,239,172,0.07) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  margin-bottom: 2rem;
  animation: fadeUp 0.6s ease both;
}

.hero-title {
  font-family: 'Space Mono', monospace;
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.7s ease both 0.1s;
}
.hero-title .side   { color: var(--green); }
.hero-title .quests { color: var(--blue); }

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.7s ease both 0.2s;
}

.hero-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: #0A0A0A;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.9rem 2rem;
  border-radius: 6px;
  text-decoration: none;
  transition: opacity .2s, transform .2s;
  animation: fadeUp 0.7s ease both 0.3s;
}
.hero-cta:hover { opacity: 0.85; transform: translateY(-2px); }

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%; transform: translateX(-50%);
  color: var(--border);
  font-size: 0.7rem;
  font-family: 'Space Mono', monospace;
  letter-spacing: 0.1em;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  animation: fadeUp 1s ease both 0.6s;
}
.hero-scroll::after {
  content: '';
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--border), transparent);
}

/* ── STATS ── */
.stats {
  display: flex;
  justify-content: center;
  gap: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat {
  flex: 1;
  max-width: 220px;
  padding: 2rem 1.5rem;
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: 'Space Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--green), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { color: var(--muted); font-size: 0.78rem; margin-top: 0.3rem; }

/* ── SECTION ── */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 3rem;
}
.section-title {
  font-family: 'Space Mono', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}
.section-count {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--muted);
}

/* ── FILTER ── */
.filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.filter-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all .2s;
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--green);
  color: var(--green);
  background: rgba(134,239,172,0.06);
}

/* ── GRID ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ── CARD ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
  transition: border-color .25s, transform .25s;
  animation: fadeUp 0.5s ease both;
}
.card:hover {
  border-color: #454444;
  transform: translateY(-3px);
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--blue));
  opacity: 0;
  transition: opacity .3s;
}
.card:hover::before { opacity: 1; }

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.card-category {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(134,239,172,0.08);
  border: 1px solid rgba(134,239,172,0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.card-age {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--muted);
  white-space: nowrap;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--white);
}

.card-desc {
  font-size: 0.87rem;
  color: var(--muted);
  line-height: 1.6;
}

.card-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--muted);
}
.card-meta-item svg { flex-shrink: 0; }

.card-divider {
  height: 1px;
  background: var(--border);
}

.card-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--white);
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.7rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  transition: all .2s;
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
}
.card-btn:hover {
  background: rgba(134,239,172,0.08);
  border-color: var(--green);
  color: var(--green);
}

/* ── MODAL ── */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.8);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  width: 100%;
  max-width: 440px;
  position: relative;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  width: 32px; height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.modal-close:hover { color: var(--white); border-color: #454444; }

.modal-title {
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.modal-sub {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.modal-label {
  display: block;
  font-size: 0.75rem;
  font-family: 'Space Mono', monospace;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.modal-input {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--white);
  font-family: 'Syne', sans-serif;
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  outline: none;
  transition: border-color .2s;
  margin-bottom: 1rem;
}
.modal-input:focus { border-color: var(--green); }
.modal-input::placeholder { color: #454444; }

.modal-submit {
  width: 100%;
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: #0A0A0A;
  border: none;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity .2s, transform .2s;
}
.modal-submit:hover { opacity: 0.85; transform: translateY(-1px); }
.modal-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.modal-note {
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
  margin-top: 0.8rem;
}

.modal-success {
  display: none;
  text-align: center;
  padding: 1rem 0;
}
.modal-success.show { display: block; }
.modal-success-icon {
  font-size: 2.5rem;
  margin-bottom: 0.8rem;
}
.modal-success-title {
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 0.5rem;
}
.modal-success-text {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ── HOW IT WORKS ── */
.how-section {
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
}
.how-item {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
  position: relative;
}
.how-item:last-child { border-right: none; }
.how-num {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--green);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.how-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.how-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy {
  font-size: 0.78rem;
  color: var(--muted);
  font-family: 'Space Mono', monospace;
}
.footer-copy span {
  background: linear-gradient(135deg, var(--green), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  nav { padding: 1rem 1.2rem; }
  .hero { padding: 6rem 1.2rem 3rem; }
  .section { padding: 3rem 1.2rem; }
  .stats { flex-direction: column; }
  .stat { border-right: none; border-bottom: 1px solid var(--border); max-width: 100%; }
  .stat:last-child { border-bottom: none; }
  .how-item { border-right: none; border-bottom: 1px solid var(--border); }
  .how-item:last-child { border-bottom: none; }
  footer { flex-direction: column; text-align: center; }
}