/* ============================================================
   gamestheory.org — hub landing page
   Matches the dark trading-terminal aesthetic of the games.
   ============================================================ */

:root {
  --bg: #0b0f17;
  --bg-grad-1: #0e1422;
  --bg-grad-2: #070a11;
  --panel: #111827;
  --panel-2: #0d1320;
  --line: #1f2937;
  --text: #e6edf3;
  --text-dim: #9aa7b8;
  --text-faint: #5b6678;
  --green: #16c784;
  --red: #ea3943;
  --rose: #ef5350;
  --blue: #4f8cff;
  --amber: #f0a843;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --ff: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --ff-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--ff);
  color: var(--text);
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1100px 560px at 50% -10%, var(--bg-grad-1), transparent 70%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-grad-2) 100%);
}

/* ---------- Header ---------- */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px clamp(16px, 4vw, 36px);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark { width: 32px; height: 32px; }
.brand__mark .m-red { fill: var(--rose); }
.brand__mark .m-blue { fill: var(--blue); }
.brand__mark .m-green { fill: var(--green); }
.brand__mark .m-amber { fill: var(--amber); }
.brand__name {
  font-weight: 800;
  letter-spacing: 0.14em;
  font-size: 1rem;
}
.brand__name em { font-style: normal; color: var(--text-faint); font-weight: 600; }

.lang-btn {
  width: 44px; height: 38px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text-dim);
  font-family: var(--ff-mono);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease;
}
.lang-btn:hover { color: var(--text); border-color: var(--text-faint); }

/* ---------- Hero ---------- */
.wrap {
  flex: 1;
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 8px clamp(16px, 4vw, 36px) 40px;
}

.hero { text-align: center; padding: clamp(20px, 6vw, 56px) 0 clamp(24px, 5vw, 48px); }
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 5.4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.08;
  background: linear-gradient(120deg, var(--text) 30%, var(--blue) 70%, var(--green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  margin: 0 auto;
  max-width: 560px;
  color: var(--text-dim);
  font-size: clamp(0.95rem, 2.4vw, 1.08rem);
  line-height: 1.55;
}

/* ---------- Cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(264px, 1fr));
  gap: 18px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px 20px;
  text-decoration: none;
  color: var(--text);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
a.card:hover, a.card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--blue);
}

.card__art {
  border-radius: 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  overflow: hidden;
  margin-bottom: 4px;
}
.card__art svg { display: block; width: 100%; height: auto; }

.card h2 { margin: 4px 0 0; font-size: 1.12rem; letter-spacing: 0.01em; }
.card p { margin: 0; color: var(--text-dim); font-size: 0.88rem; line-height: 1.5; flex: 1; }

.card__cta {
  margin-top: 8px;
  font-weight: 800;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  color: var(--blue);
}
a.card:hover .card__cta { text-decoration: underline; text-underline-offset: 3px; }

.card--soon { opacity: 0.55; border-style: dashed; box-shadow: none; }
.card--soon h2 { color: var(--text-dim); }

/* card art colours */
.a-red { fill: var(--rose); }
.a-blue { fill: var(--blue); }
.a-red-glow { fill: #fff; opacity: 0.25; }
.a-blue-glow { fill: #fff; opacity: 0.25; }
.a-green { fill: var(--green); }
.a-rose { fill: var(--red); }
.w-green { stroke: var(--green); stroke-width: 4; stroke-linecap: round; }
.w-red { stroke: var(--red); stroke-width: 4; stroke-linecap: round; }
.a-dash { fill: none; stroke: var(--text-faint); stroke-width: 2; stroke-dasharray: 7 7; }
.a-q {
  fill: var(--text-faint);
  font-family: var(--ff-mono);
  font-size: 30px;
  font-weight: 700;
  text-anchor: middle;
}

/* ---------- Footer ---------- */
.foot {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 10px clamp(16px, 4vw, 36px) 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--text-faint);
  font-size: 0.78rem;
}
.foot p { margin: 0; }
.gh {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.gh:hover { color: var(--text); }
.gh svg { width: 15px; height: 15px; fill: currentColor; }

/* ---------- Motion / focus ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.001ms !important; }
}
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; border-radius: 8px; }