/* dishekimiara — Medical Blue tokenları ve temel stiller (DESIGN.md §2–§4) */
:root {
  --c-primary: #2457C5;
  --c-primary-dark: #1A4396;
  --c-accent: #0B9FAD;
  --c-accent-text: #0A7F8A;
  --c-bg: #F3F8FF;
  --c-surface: #FFFFFF;
  --c-text: #253349;
  --c-muted: #5B6B7F;
  --c-line: #D9E3F2;
  --c-line-strong: #7F8FA8;
  --c-error: #B42318;
  --c-tag-bg: #E8EFFB;
  --c-tag-text: #1A4396;
  --c-navy: #16294A;
  --c-open: #166534;
  --c-closed: #B42318;
  --c-yildiz: #B7791F;

  --font: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --fs-display: 46px;
  --fs-h2: 24px;
  --fs-h3: 19px;
  --fs-body: 15px;
  --fs-small: 13px;

  --r-lg: 12px;
  --r-sm: 8px;
  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 20px;
  --s-6: 24px; --s-8: 32px; --s-10: 40px; --s-12: 48px; --s-16: 64px; --s-20: 80px;

  --tap: 44px;
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--c-text);
  background: var(--c-bg);
}
img { display: block; max-width: 100%; }
a { color: var(--c-primary); }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; }
p { margin: 0; }
button, input, select { font: inherit; color: inherit; }

:focus-visible { outline: 3px solid var(--c-primary); outline-offset: 2px; border-radius: 4px; }

/* Kaydırma çubuğu (DESIGN.md §4): ince, yuvarlak, site renkleriyle. Chrome/Firefox standart özelliği, Safari ::-webkit-scrollbar kullanır. */
:root { --c-scroll: color-mix(in srgb, var(--c-primary) 35%, #fff); scrollbar-color: var(--c-scroll) transparent; }
* { scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; margin: 6px; }
::-webkit-scrollbar-thumb { background: var(--c-scroll); border: 2px solid transparent; border-radius: 999px; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background-color: var(--c-primary); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

.container { width: min(100% - 32px, var(--container)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
/* Uzun adı 2 satırda "…" ile keser; tam metin DOM'da kalır (SEO, ekran okuyucu). */
.kisalt-2 { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; overflow: hidden; overflow-wrap: anywhere; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  min-height: var(--tap); padding: 0 var(--s-5);
  border: 1px solid transparent; border-radius: var(--r-sm);
  font-weight: 700; font-size: var(--fs-body); text-decoration: none; cursor: pointer;
  transition: background-color .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-secondary { background: var(--c-surface); color: var(--c-primary); border-color: var(--c-line); }
.btn-secondary:hover { border-color: var(--c-primary); }

.tag {
  display: inline-flex; align-items: center; gap: var(--s-1);
  padding: 4px 10px; border-radius: 999px;
  background: var(--c-tag-bg); color: var(--c-tag-text);
  font-size: var(--fs-small); font-weight: 600; line-height: 1.4;
}
.ikon { width: 1.2em; height: 1.2em; flex: none; vertical-align: -0.2em; }
.skip-link { position: absolute; left: var(--s-4); top: -100px; z-index: 100; padding: var(--s-2) var(--s-4); background: var(--c-primary); color: #fff; border-radius: var(--r-sm); font-weight: 700; }
.skip-link:focus { top: var(--s-2); }