/* ==========================================================================
   base.css — إعادة الضبط والأساسيات والطباعة
   ========================================================================== */

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

html {
  overflow-x: clip;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: linear-gradient(160deg, var(--page-a), var(--page-b)) fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }

h1, h2, h3 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }

:focus-visible {
  outline: 3px solid var(--pink);
  outline-offset: 3px;
  border-radius: 6px;
}

.latin { font-family: var(--font-latin); direction: ltr; unicode-bidi: isolate; }

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

.skip-link {
  position: fixed; inset-block-start: 8px; inset-inline-start: 8px; z-index: 100;
  padding: 10px 18px; border-radius: var(--r-pill);
  background: var(--dark); color: var(--on-dark);
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; }

/* حركة الظهور عند التمرير (تُفعَّل فقط إن كانت JS متاحة) */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
  transition-delay: var(--d, 0ms);
}
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

.tnum { font-variant-numeric: tabular-nums; }

/* ---------- انتقال الوضع الداكن ---------- */
/* دائرة تتّسع من الزر (View Transitions) — المتحكّم بها من core.js */
::view-transition-old(root),
::view-transition-new(root) { animation: none; mix-blend-mode: normal; }
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* بديل للمتصفحات القديمة: تدرّج لوني ناعم */
.theme-switching,
.theme-switching *,
.theme-switching *::before,
.theme-switching *::after {
  transition: background-color 0.6s ease, color 0.6s ease, border-color 0.6s ease, fill 0.6s ease, stroke 0.6s ease !important;
}