*,
*::before,
*::after {
  box-sizing: border-box;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html {
  min-width: 320px;
  overflow-x: clip;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  color: var(--fg);
  background: var(--page-bg);
}

main,
section,
article,
aside,
header,
footer,
nav,
div {
  min-width: 0;
}

img,
picture,
svg,
video,
canvas {
  max-width: 100%;
}

img,
picture,
video,
canvas {
  display: block;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a,
button {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

/* ── Tek sayfa genişliği: 1200px, gutter 32px ────────────────
   Tüm bölümlerde .container kullan, başka max-width yazma.
   ─────────────────────────────────────────────────────────── */
.container {
  width: min(calc(100% - (var(--container-gutter) * 2)), var(--container-max));
  margin-inline: auto;
}

.container--readable {
  max-width: var(--container-readable);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-y-sm);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
  gap: 14px;
}

.card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
}

.card p {
  color: var(--muted);
  line-height: var(--lh-body);
}

.prose {
  line-height: var(--lh-body);
}

.ref-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
}

.ref-filter {
  padding: 7px 12px;
  border: 1px solid #d8e1eb;
  border-radius: var(--radius-control);
  background: #f8fafd;
  color: #475569;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.ref-filter.is-active {
  border-color: #b7dde0;
  background: #eef7f8;
  color: #0b7477;
}

.is-scroll-locked {
  overflow: hidden;
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}