:root {
  --ice: #dff4ff;
  --mint: #83d6ee;
  --deep: #0e2338;
  --slate: #16334e;
  --glow: #b7f0ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--ice);
  background:
    linear-gradient(180deg, rgba(99, 184, 220, 0.2), transparent 34%),
    linear-gradient(160deg, #07121f, #112b43 54%, #061221);
}

.ice-top {
  width: min(1520px, 100%);
  margin: 0 auto;
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.ice-brand {
  margin-right: auto;
  text-decoration: none;
  color: var(--ice);
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
}

.ice-brand img {
  width: 46px;
  height: 46px;
}

.ice-brand span {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.09em;
  font-size: clamp(0.95rem, 1.4vw, 1.25rem);
}

.ice-hamburger {
  display: none;
  border: 1px solid #4d8fb0;
  background: #15324a;
  color: var(--ice);
  border-radius: 8px;
  padding: 0.4rem 0.7rem;
}

.ice-nav {
  display: flex;
  gap: 0.5rem;
}

.ice-nav a {
  color: #dbf6ff;
  text-decoration: none;
  border: 1px solid #4f89a8;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  font-size: 0.95rem;
}

.ice-nav a:hover {
  background: var(--mint);
  color: #072032;
}

.cryo-main,
.play-ridge,
.doc-ice {
  width: min(1520px, 100%);
  margin: 0 auto;
  padding: 0.3rem 1.2rem 2rem;
}

.ice-hero {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(250px, 1fr);
  gap: 1rem;
}

.ice-hero > div,
.rule-stack,
.ice-game-block,
.ice-info-block,
.ice-panels > div,
.play-ridge-head,
.play-ridge-frame,
.play-ridge-note,
.doc-ice {
  backdrop-filter: blur(3px);
  background: rgba(11, 34, 53, 0.72);
  border: 1px solid #2f6686;
  border-radius: 14px;
}

.ice-hero > div,
.rule-stack,
.ice-game-block,
.ice-info-block,
.ice-panels > div,
.play-ridge-head,
.play-ridge-note,
.doc-ice {
  padding: 1rem;
}

.ice-cap {
  margin: 0;
  color: var(--glow);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 700;
}

h1 {
  margin: 0.55rem 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.85rem, 4.4vw, 3.2rem);
  line-height: 1.1;
}

.rule-stack {
  display: grid;
  gap: 0.65rem;
}

.rule-stack strong {
  border: 1px solid #4f92b8;
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  background: rgba(183, 240, 255, 0.12);
}

.ice-content {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(280px, 1fr);
  gap: 1rem;
}

h2 {
  margin-top: 0;
  font-family: "Space Grotesk", sans-serif;
  color: #b7f2ff;
}

.ice-game-block iframe,
.play-ridge-frame iframe {
  display: block;
  width: 100%;
  min-height: 620px;
  border: 0;
  border-radius: 10px;
  background: #000;
}

.ice-panels {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.play-ridge {
  display: grid;
  gap: 1rem;
}

.play-ridge-frame {
  padding: 0.8rem;
}

.doc-ice {
  max-width: 980px;
}

.ice-foot {
  width: min(1520px, 100%);
  margin: 0 auto;
  padding: 0.4rem 1.2rem 1.4rem;
  border-top: 1px solid #2d5c77;
}

.ice-foot div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.ice-foot a {
  color: #b6efff;
}

.frost-gate {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  z-index: 99;
  background: rgba(6, 11, 18, 0.88);
  padding: 1rem;
}

.frost-gate.open {
  display: grid;
}

.frost-gate-card {
  width: min(420px, 100%);
  background: #12304a;
  border: 1px solid #4c8ead;
  border-radius: 14px;
  padding: 1rem;
}

.frost-gate-actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
}

.frost-gate-actions button {
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

#frostYes {
  background: var(--mint);
  color: #072133;
}

#frostNo {
  background: #2b1111;
  color: #fff;
}

@media (max-width: 920px) {
  .ice-hamburger {
    display: inline-block;
  }

  .ice-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    border: 1px solid #467e9c;
    border-radius: 12px;
    background: #0d2a41;
    padding: 0.55rem;
  }

  .ice-nav.open {
    display: flex;
  }

  .ice-hero,
  .ice-content,
  .ice-panels {
    grid-template-columns: 1fr;
  }

  .ice-game-block iframe,
  .play-ridge-frame iframe {
    min-height: 470px;
  }
}