:root {
  color-scheme: dark;
  --bg: #070b0a;
  --panel: #101715;
  --text: #f3f6f4;
  --muted: #acb8b2;
  --accent: #d6b36a;
  --line: rgba(255, 255, 255, 0.11);
  --max: 820px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% -10%, rgba(39, 120, 88, 0.24), transparent 34rem),
    radial-gradient(circle at 90% 12%, rgba(214, 179, 106, 0.11), transparent 30rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--accent); }

.shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: 24px 0 64px;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
}

.brand {
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: .02em;
  text-decoration: none;
}

.nav-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--text); }

.language-switch {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.03);
}

.language-switch button {
  border: 0;
  border-radius: 999px;
  padding: 7px 12px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: inherit;
}

.language-switch button[aria-pressed="true"] {
  color: #17130b;
  background: var(--accent);
  font-weight: 700;
}

main {
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(24px, 5vw, 52px);
  background: rgba(16, 23, 21, .88);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .28);
}

h1 { margin: 0 0 8px; font-size: clamp(2rem, 7vw, 3.2rem); line-height: 1.08; }
h2 { margin-top: 2.25em; font-size: 1.25rem; line-height: 1.35; }
h3 { margin-top: 1.6em; }
p, li { color: #d7dfdb; }
.updated, .lead { color: var(--muted); }
.lead { font-size: 1.08rem; }
ul, ol { padding-left: 1.35rem; }

.notice {
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  background: rgba(214, 179, 106, .08);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.card {
  display: block;
  min-height: 140px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--text);
  text-decoration: none;
  background: rgba(255,255,255,.025);
}

.card:hover { border-color: rgba(214,179,106,.5); transform: translateY(-1px); }
.card small { display: block; margin-top: 8px; color: var(--muted); }

footer {
  padding: 28px 4px 0;
  color: var(--muted);
  font-size: .92rem;
}

[data-lang="en"] { display: none; }
html[lang="en"] [data-lang="tr"] { display: none; }
html[lang="en"] [data-lang="en"] { display: revert; }

@media (max-width: 640px) {
  nav { align-items: flex-start; flex-direction: column; margin-bottom: 24px; }
  .shell { width: min(calc(100% - 20px), var(--max)); padding-top: 14px; }
  main { border-radius: 18px; }
}