:root {
  color-scheme: light;
  --background: #ffffff;
  --surface: #f8f8f8;
  --text: #000000;
  --muted: #666666;
  --border: #e5e5e5;
}

* {
  box-sizing: border-box;
}

html {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background: var(--background);
  color: var(--text);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
}

a {
  color: inherit;
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0 28px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-tagline {
  color: var(--muted);
  font-size: 14px;
}

.language-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.language-toggle button {
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

body[data-lang="tr"] button[data-language-button="tr"],
body[data-lang="en"] button[data-language-button="en"] {
  background: var(--text);
  color: var(--background);
}

.hero {
  padding: 44px 0 32px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(40px, 8vw, 76px);
  line-height: 0.95;
  letter-spacing: 0;
}

.intro {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.65;
}

.updated {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.nav-card {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.nav-card a {
  display: block;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  text-decoration: none;
}

.nav-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 22px;
}

.nav-card span {
  color: var(--muted);
  line-height: 1.5;
}

.document {
  display: grid;
  gap: 24px;
  padding-top: 30px;
}

.section {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
}

.section h2 {
  margin: 0 0 14px;
  font-size: 24px;
  letter-spacing: 0;
}

.section p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}


.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  padding: 10px 14px;
  border: 1px solid var(--text);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}
.footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

body[data-lang="tr"] .lang-en,
body[data-lang="en"] .lang-tr {
  display: none;
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 24px, 920px);
    padding-top: 18px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding: 34px 0 26px;
  }

  .intro {
    font-size: 17px;
  }

  .nav-card {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 22px;
    border-radius: 20px;
  }
}