@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@400;600;700;800&family=Public+Sans:wght@400;500;700&display=swap');

:root {
  --bg: #091321;
  --panel: #10213a;
  --ring: #4fd1ff;
  --sun: #ffd36a;
  --text: #e9f6ff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Public Sans', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 85% 10%, rgba(79,209,255,0.2), transparent 35%),
    radial-gradient(circle at 10% 82%, rgba(255,211,106,0.14), transparent 40%),
    #091321;
}

.frame { max-width: 1440px; margin: 0 auto; padding: 0 1rem; }

header {
  background: rgba(9,19,33,0.9);
  border-bottom: 1px solid rgba(79,209,255,0.22);
  position: sticky;
  top: 0;
  z-index: 30;
}

.head {
  min-height: 76px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.8rem;
}

.logo-link {
  text-decoration: none;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: 'Kanit', sans-serif;
  font-weight: 700;
}

.logo-link img { width: 34px; height: 34px; }

.nav-btn {
  display: none;
  border: 1px solid rgba(79,209,255,0.4);
  background: transparent;
  color: var(--text);
  border-radius: 7px;
  padding: 0.34rem 0.7rem;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: flex-end;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--text);
  padding: 0.43rem 0.68rem;
  border-radius: 7px;
}

nav a:hover { background: rgba(79,209,255,0.14); }

.hero {
  padding: 2.6rem 0 1.2rem;
}

.hero-block {
  border: 1px solid rgba(79,209,255,0.24);
  border-radius: 24px;
  padding: 1.5rem;
  background:
    linear-gradient(120deg, rgba(16,33,58,0.94), rgba(13,23,37,0.93));
  position: relative;
  overflow: hidden;
}

.hero-block::after {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border: 1px dashed rgba(79,209,255,0.33);
  border-radius: 50%;
  right: -120px;
  top: -90px;
}

.hero h1 {
  margin: 0;
  font-family: 'Kanit', sans-serif;
  font-size: clamp(2rem, 4.8vw, 3.6rem);
}

.stamps {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.stamps b {
  background: rgba(79,209,255,0.18);
  border: 1px solid rgba(79,209,255,0.3);
  border-radius: 999px;
  padding: 0.42rem 0.7rem;
}

.shell-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
  padding-bottom: 2.4rem;
}

.arena {
  border: 1px solid rgba(79,209,255,0.25);
  border-radius: 20px;
  background: #050b15;
  padding: 0.7rem;
}

.arena iframe {
  width: 100%;
  min-height: 690px;
  border: 0;
  border-radius: 13px;
}

.side {
  display: grid;
  gap: 0.8rem;
}

.badge-card {
  border: 1px solid rgba(79,209,255,0.24);
  border-radius: 18px;
  background: rgba(16,33,58,0.9);
  padding: 1rem;
}

.badge-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.06rem;
}

.doc {
  padding: 2rem 0 3rem;
}

.doc-panel {
  max-width: 980px;
  border: 1px solid rgba(79,209,255,0.25);
  border-radius: 22px;
  background: rgba(16,33,58,0.93);
  padding: 1.4rem;
}

.doc-panel h1 {
  margin-top: 0;
  font-family: 'Kanit', sans-serif;
  font-size: 2rem;
}

footer { border-top: 1px solid rgba(79,209,255,0.22); }

.tail {
  padding: 1rem 0 1.45rem;
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.tail a { color: var(--ring); }

.age {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  background: rgba(1, 8, 15, 0.84);
  padding: 1rem;
}

.age.hidden { display: none; }

.age-dialog {
  width: min(520px, 100%);
  border: 1px solid rgba(79,209,255,0.28);
  border-radius: 16px;
  background: #0f223a;
  padding: 1.1rem;
}

.age-line {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.85rem;
}

.age-line button {
  border: 0;
  border-radius: 8px;
  padding: 0.54rem 0.8rem;
  font-weight: 700;
}

.age-line .yes { background: #4fd1ff; color: #061523; }
.age-line .no { background: #334f6c; color: #e9f6ff; }

@media (max-width: 980px) {
  .shell-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav-btn { display: inline-flex; }
  nav {
    display: none;
    grid-column: 1 / -1;
    border-top: 1px solid rgba(79,209,255,0.2);
    padding-top: 0.5rem;
  }
  nav.open { display: block; }
  nav ul { flex-direction: column; }
  .arena iframe { min-height: 470px; }
}