/* Freeze install — nocturnal frost on glass. Not cubing. Not Quell. */

:root {
  color-scheme: dark;
  --bg: #05080c;
  --field: #0a141c;
  --frost: #c9e4f4;
  --ice: #8ebfd9;
  --rim: rgba(201, 228, 244, 0.22);
  --glass: rgba(14, 24, 32, 0.62);
  --text: #e7eef4;
  --muted: #7d8d9c;
  --halt: #071018;
  --display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --mono: "Azeret Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
}

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

html { height: 100%; }

body {
  font-family: var(--display);
  font-optical-sizing: auto;
  background: var(--bg);
  color: var(--text);
  height: 100%;
  overflow: hidden;
  line-height: 1.5;
}

/* ── atmosphere ─────────────────────────────────────────────── */
.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.moon {
  position: absolute;
  width: min(72vw, 820px);
  height: min(72vw, 820px);
  right: -12%;
  top: -22%;
  background: radial-gradient(circle, rgba(186, 216, 235, 0.18) 0%, rgba(90, 140, 170, 0.06) 38%, transparent 68%);
}
.veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(5, 8, 12, 0.55) 0 42%, transparent 62%),
    repeating-linear-gradient(
      -18deg,
      transparent 0 11px,
      rgba(201, 228, 244, 0.015) 11px 12px
    );
}
.grain {
  position: absolute;
  inset: 0;
  opacity: 0.07;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='.55'/></svg>");
}

/* ── folk split ─────────────────────────────────────────────── */
.page {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
}

.panel-left {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 44px 40px 32px 56px;
  overflow-y: auto;
  scrollbar-width: none;
  position: relative;
  z-index: 2;
}
.panel-left::-webkit-scrollbar { display: none; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--frost);
  width: fit-content;
}
.mark {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.35;
  stroke-linecap: round;
}

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.hero-text h1 {
  font-size: clamp(48px, 6.2vw, 78px);
  font-weight: 700;
  font-variation-settings: "wdth" 82, "opsz" 72;
  line-height: 0.92;
  letter-spacing: -0.045em;
}
.hero-text h1 em {
  font-style: normal;
  font-weight: 500;
  font-variation-settings: "wdth" 88, "opsz" 72;
  color: var(--frost);
}
.hero-text .sub {
  margin-top: 18px;
  max-width: 34ch;
  font-size: 16px;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.55;
}

.trust {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ── install: one primary CTA, quiet steps ─────────────────── */
.install { max-width: 380px; }

.install-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.install-steps li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  align-items: flex-start;
}

.n {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--ice);
  padding-top: 6px;
  letter-spacing: 0.04em;
}
.install-steps li:first-child .n { padding-top: 16px; }

.dl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 14px 20px;
  background: var(--frost);
  color: var(--halt);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 8px;
  text-decoration: none;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.18),
    0 16px 40px rgba(140, 190, 220, 0.14);
  transition: transform 0.12s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.dl-btn:hover {
  background: #edf6fc;
  transform: translateY(-1px);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.28),
    0 18px 48px rgba(160, 210, 235, 0.2);
}
.dl-btn:focus-visible,
.open-btn:focus-visible {
  outline: 2px solid var(--frost);
  outline-offset: 3px;
}

.open-btn {
  display: inline-flex;
  padding: 8px 0;
  background: transparent;
  color: var(--frost);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  border: none;
  border-bottom: 1px solid var(--rim);
  border-radius: 0;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.open-btn:hover { color: var(--text); border-bottom-color: var(--frost); }
.open-btn.copied {
  color: var(--frost);
  font-size: 11px;
  border-bottom-color: transparent;
}

.step-action {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding-top: 2px;
}
.hint {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}
.hint strong { color: var(--text); font-weight: 600; }

.footnote {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}
.footnote a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footnote a:hover { color: var(--text); }

/* ── right: ice field + overlapping live preview ───────────── */
.panel-right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 48px 40px 16px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 90% 80% at 68% 42%, rgba(150, 196, 222, 0.16), transparent 58%),
    linear-gradient(180deg, #0c1822 0%, #071117 100%);
}

.demo-stage {
  width: 100%;
  max-width: 680px;
}

.demo-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ice);
  margin-bottom: 14px;
  margin-left: 8px;
}

#freeze-demo { width: 100%; }

.browser {
  border: 1px solid var(--rim);
  border-radius: 14px;
  overflow: hidden;
  background: var(--glass);
  backdrop-filter: blur(22px) saturate(1.15);
  -webkit-backdrop-filter: blur(22px) saturate(1.15);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 28px 80px rgba(0, 0, 0, 0.48),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  transition: border-color 0.4s, box-shadow 0.4s;
}
#freeze-demo.is-frozen .browser {
  border-color: rgba(201, 228, 244, 0.5);
  box-shadow:
    0 0 0 1px rgba(180, 220, 245, 0.18),
    0 24px 70px rgba(70, 140, 180, 0.16),
    inset 0 0 90px rgba(160, 205, 230, 0.08);
}

.b-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rim);
  background: rgba(255, 255, 255, 0.03);
}
.traffic { display: flex; gap: 6px; flex: none; }
.traffic span { width: 10px; height: 10px; border-radius: 50%; }
.traffic span:nth-child(1) { background: #ff5f57; }
.traffic span:nth-child(2) { background: #febc2e; }
.traffic span:nth-child(3) { background: #28c840; }

.tab-strip {
  display: flex;
  gap: 3px;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-strip::-webkit-scrollbar { display: none; }

.b-tab {
  flex: none;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: 5px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  cursor: default;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.b-tab.playing { background: rgba(255, 255, 255, 0.06); color: var(--text); }
.b-tab-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--hue); opacity: 0.85; }
.b-tab.idle .b-tab-dot { opacity: 0.25; }

.b-freeze {
  flex: none;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--rim);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s, box-shadow 0.2s;
  user-select: none;
}
.b-freeze:hover { border-color: var(--ice); }
.b-freeze.active {
  background: var(--frost);
  color: var(--halt);
  border-color: transparent;
  box-shadow: 0 4px 18px rgba(180, 220, 245, 0.28);
}

.b-body {
  position: relative;
  padding: 16px;
}

.frost {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(201, 228, 244, 0.12) 0%, rgba(90, 140, 170, 0.04) 100%);
  backdrop-filter: blur(0px);
  transition: opacity 0.4s, backdrop-filter 0.4s;
  z-index: 2;
  border-radius: 0 0 14px 14px;
}
#freeze-demo.is-frozen .frost {
  opacity: 1;
  backdrop-filter: blur(2.5px);
}

.snowfield {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.35s;
  border-radius: 0 0 14px 14px;
}
#freeze-demo.is-frozen .snowfield { opacity: 1; }

.snow {
  position: absolute;
  top: -16px;
  color: var(--frost);
  animation: fall linear infinite;
  text-shadow: 0 0 6px rgba(201, 228, 244, 0.45);
}
@keyframes fall { to { transform: translateY(400px) rotate(360deg); } }

.players {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.player {
  border: 1px solid var(--rim);
  border-radius: 8px;
  padding: 10px;
  background: rgba(5, 10, 14, 0.35);
  cursor: pointer;
  transition: border-color 0.2s, filter 0.3s, opacity 0.3s;
}
.player:hover:not(.fp) { border-color: rgba(201, 228, 244, 0.35); }
.player.fp {
  filter: saturate(0.15) brightness(0.78);
  border-color: rgba(142, 191, 217, 0.4);
  cursor: default;
}

.p-head {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 8px;
}
.p-icon {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  background: color-mix(in srgb, var(--hue) 20%, transparent);
  color: var(--hue);
  font-size: 10px;
  display: grid;
  place-items: center;
  flex: none;
}
.p-title {
  flex: 1;
  min-width: 0;
  font-size: 11px;
  font-family: var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}
.p-state {
  flex: none;
  font-family: var(--mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.player.playing .p-state { color: #7dcea0; }
.player.fp .p-state { color: var(--frost); }

.p-screen {
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.45);
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
}

.bars {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  padding: 25% 20% 18%;
}
.bars span {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: var(--hue);
  opacity: 0.7;
  animation: bounce var(--d, 0.7s) ease-in-out infinite alternate;
  transform-origin: bottom;
}
.player:not(.playing) .bars span { animation: none; transform: scaleY(0.15); opacity: 0.2; }
@keyframes bounce { from { transform: scaleY(0.3); } to { transform: scaleY(1); } }

.p-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.06);
}
.p-progress span {
  display: block;
  height: 100%;
  background: var(--hue);
  animation: scrub 12s linear infinite;
}
.player:not(.playing) .p-progress span { animation-play-state: paused; }
@keyframes scrub { from { width: 8%; } to { width: 94%; } }

.b-status {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  transition: color 0.3s;
  position: relative;
  z-index: 1;
}
#freeze-demo.is-frozen .b-status { color: var(--frost); }

.demo-tip {
  margin-top: 12px;
  font-size: 11px;
  font-family: var(--mono);
  color: var(--muted);
  text-align: center;
}
.demo-tip strong { color: var(--frost); font-weight: 600; }

@media (prefers-reduced-motion: reduce) {
  .snow,
  .bars span,
  .p-progress span { animation: none !important; }
}

@media (max-width: 860px) {
  body { overflow: auto; }

  .page {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    height: auto;
    min-height: 100dvh;
  }

  .panel-left {
    padding: 32px 24px 20px;
    gap: 22px;
    overflow: visible;
  }

  .hero-text h1 { font-size: clamp(40px, 12vw, 60px); }

  .panel-right {
    padding: 12px 20px 40px;
    justify-content: stretch;
    background:
      radial-gradient(ellipse 80% 60% at 50% 0%, rgba(150, 196, 222, 0.14), transparent 55%),
      var(--bg);
  }

  .demo-stage { width: 100%; max-width: none; }

  .footnote { margin-top: 8px; }
}

@supports (scrollbar-color: auto) {
  .panel-left { scrollbar-color: rgba(201, 228, 244, 0.12) transparent; scrollbar-width: thin; }
}