:root {
  --bg-1: #07121f;
  --bg-2: #111827;
  --grid: rgba(46, 196, 182, 0.12);
  --panel: rgba(4, 17, 29, 0.88);
  --panel-2: rgba(7, 24, 39, 0.94);
  --accent: #2ec4b6;
  --accent-2: #ff9f1c;
  --accent-3: #ffd166;
  --text: #e6f6ff;
  --muted: #8eb7c8;
  --ok: #7ef29a;
  --shadow: rgba(46, 196, 182, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  color: var(--text);
  font-family: "Courier New", Courier, monospace;
  background:
    linear-gradient(90deg, transparent 24%, var(--grid) 25%, var(--grid) 26%, transparent 27%, transparent 74%, var(--grid) 75%, var(--grid) 76%, transparent 77%),
    linear-gradient(0deg, transparent 24%, var(--grid) 25%, var(--grid) 26%, transparent 27%, transparent 74%, var(--grid) 75%, var(--grid) 76%, transparent 77%),
    radial-gradient(circle at 20% 18%, rgba(46, 196, 182, 0.18), transparent 28%),
    radial-gradient(circle at 82% 16%, rgba(255, 159, 28, 0.16), transparent 24%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));
  background-size: 46px 46px, 46px 46px, auto, auto, auto;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(rgba(255, 255, 255, 0.03), transparent 3px);
  background-size: 100% 6px;
  opacity: 0.16;
}

.background-glow {
  position: fixed;
  width: 34rem;
  height: 34rem;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.22;
  pointer-events: none;
}

.background-glow-left {
  top: -10rem;
  left: -10rem;
  background: #1ea3c4;
}

.background-glow-right {
  right: -12rem;
  bottom: -12rem;
  background: #ff9f1c;
}

.shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(46, 196, 182, 0.75);
  border-radius: 18px;
  box-shadow: 0 0 36px var(--shadow);
  backdrop-filter: blur(7px);
}

.masthead {
  padding: 28px;
  margin-bottom: 22px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  letter-spacing: 3px;
  font-size: 0.82rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.deck {
  max-width: 48rem;
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(126, 242, 154, 0.45);
  background: rgba(126, 242, 154, 0.12);
  color: var(--ok);
  font-size: 0.82rem;
  letter-spacing: 1px;
}

.status-pill-muted {
  border-color: rgba(255, 209, 102, 0.38);
  background: rgba(255, 209, 102, 0.1);
  color: var(--accent-3);
}

.list {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.puzzle-card {
  position: relative;
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 18px;
  border-radius: 14px;
  border: 1px solid rgba(46, 196, 182, 0.24);
  background: linear-gradient(180deg, rgba(8, 28, 44, 0.95), var(--panel-2));
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.puzzle-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(46, 196, 182, 0.06), transparent 22%, transparent 78%, rgba(46, 196, 182, 0.06));
  pointer-events: none;
}

.puzzle-card-active:hover,
.puzzle-card-active:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(46, 196, 182, 0.64);
  box-shadow: 0 0 26px rgba(46, 196, 182, 0.18);
}

.puzzle-card-complete {
  border-color: rgba(126, 242, 154, 0.6);
  box-shadow: 0 0 26px rgba(126, 242, 154, 0.14);
}

.puzzle-card-locked {
  opacity: 0.88;
}

.icon-frame {
  position: relative;
  width: 84px;
  height: 84px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  border: 1px solid rgba(46, 196, 182, 0.4);
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(255, 209, 102, 0.86) 0 11px,
      rgba(114, 78, 8, 0.92) 11px 22px
    ),
    linear-gradient(180deg, rgba(9, 29, 45, 0.96), rgba(5, 19, 31, 0.96));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.icon-frame::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 12px;
  background: rgba(4, 17, 29, 0.86);
  border: 1px solid rgba(46, 196, 182, 0.24);
}

.puzzle-card-active .icon-frame {
  background: linear-gradient(180deg, rgba(9, 29, 45, 0.96), rgba(5, 19, 31, 0.96));
}

.icon-core {
  position: relative;
  z-index: 1;
  color: var(--accent);
  font-size: 1.2rem;
  letter-spacing: 1px;
  text-shadow: 0 0 12px rgba(46, 196, 182, 0.45);
}

.puzzle-copy {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.puzzle-title {
  font-size: clamp(1rem, 2vw, 1.18rem);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.puzzle-description {
  color: var(--muted);
  line-height: 1.55;
}

.puzzle-state {
  justify-self: end;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(46, 196, 182, 0.36);
  color: var(--accent);
  background: rgba(46, 196, 182, 0.08);
  font-size: 0.78rem;
  letter-spacing: 1px;
}

.puzzle-state-complete {
  border-color: rgba(126, 242, 154, 0.45);
  background: rgba(126, 242, 154, 0.14);
  color: var(--ok);
}

.puzzle-card-locked .puzzle-state {
  border-color: rgba(255, 209, 102, 0.34);
  background: rgba(255, 209, 102, 0.1);
  color: var(--accent-3);
}

.puzzle-card-locked .icon-core {
  color: var(--accent-3);
  text-shadow: 0 0 12px rgba(255, 209, 102, 0.3);
}

.puzzle-card-locked .puzzle-description {
  letter-spacing: 1px;
}

.puzzle-card.revealed {
  animation: reveal 360ms ease forwards;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 20px, 1100px);
    padding-top: 20px;
  }

  .masthead {
    padding: 22px;
  }

  .puzzle-card {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .puzzle-state {
    justify-self: start;
    grid-column: 2;
  }

  .icon-frame {
    width: 72px;
    height: 72px;
  }
}

@media (max-width: 520px) {
  .list {
    padding: 14px;
  }

  .puzzle-card {
    gap: 14px;
    padding: 15px;
  }

  .puzzle-description {
    font-size: 0.92rem;
  }
}