/* قارئ الملفات — أبيض وأسود، عربي، متجاوب */
@font-face { font-family: "Tajawal"; src: url("fonts/Tajawal-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Tajawal"; src: url("fonts/Tajawal-Medium.ttf") format("truetype"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Tajawal"; src: url("fonts/Tajawal-Bold.ttf") format("truetype"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Tajawal"; src: url("fonts/Tajawal-ExtraBold.ttf") format("truetype"); font-weight: 800; font-display: swap; }

:root {
  --ink: #0a0a0a;
  --paper: #ffffff;
  --canvas: #f4f4f4;
  --surface: #ffffff;
  --border: #e3e3e3;
  --muted: #6e6e6e;
  --shadow: 0 18px 40px rgba(0, 0, 0, .12);
  --radius: 24px;
  --max: 1160px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --ink: #f5f5f5;
  --paper: #0a0a0a;
  --canvas: #0a0a0a;
  --surface: #151515;
  --border: #2b2b2b;
  --muted: #9a9a9a;
  --shadow: 0 18px 40px rgba(0, 0, 0, .6);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Tajawal", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--canvas);
  color: var(--ink);
  line-height: 1.75;
  transition: background .35s ease, color .35s ease;
}
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }
.container { width: min(100% - 40px, var(--max)); margin-inline: auto; }
.muted { color: var(--muted); }

/* ---------- الرأس ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--canvas) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled { border-color: var(--border); box-shadow: 0 6px 24px rgba(0, 0, 0, .06); }
.nav { display: flex; align-items: center; gap: 24px; min-height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 20px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 12px; background: var(--ink); color: var(--paper);
  display: grid; place-items: center; transition: transform .3s ease;
}
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.06); }
.nav-links { display: flex; gap: 6px; margin-inline-start: auto; }
.nav-links a {
  padding: 8px 14px; border-radius: 12px; font-weight: 500; color: var(--muted);
  transition: background .2s ease, color .2s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { background: var(--ink); color: var(--paper); }
.icon-btn {
  width: 44px; height: 44px; border-radius: 14px; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink); cursor: pointer; display: grid; place-items: center;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.icon-btn:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.menu-btn { display: none; }

/* ---------- الأزرار ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 15px 28px; border-radius: 18px;
  font: inherit; font-weight: 800; font-size: 16px; cursor: pointer; border: 2px solid var(--ink);
  background: var(--ink); color: var(--paper);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.btn:active { transform: scale(.97); }
.btn .arrow { transition: transform .25s ease; }
.btn:hover .arrow { transform: translateX(-6px); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }

/* ---------- البطل ---------- */
.hero {
  position: relative; overflow: hidden; margin-top: 12px; padding: clamp(40px, 8vw, 96px) clamp(24px, 6vw, 72px);
  background: var(--ink); color: var(--paper); border-radius: 40px;
}
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 50%; border: 1.5px solid color-mix(in srgb, var(--paper) 22%, transparent);
  animation: pulse-ring 9s linear infinite;
}
.hero::before { width: 520px; height: 520px; top: -160px; left: -140px; }
.hero::after { width: 320px; height: 320px; bottom: -120px; right: -60px; animation-delay: -4s; }
@keyframes pulse-ring { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(1.5); opacity: 0; } }
.hero > * { position: relative; z-index: 1; }
.pill {
  display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 500;
  border: 1px solid color-mix(in srgb, currentColor 35%, transparent);
}
.hero h1 { font-size: clamp(34px, 6.4vw, 68px); line-height: 1.2; font-weight: 800; margin: 22px 0 16px; max-width: 14ch; }
.hero p { max-width: 56ch; font-size: clamp(16px, 2vw, 19px); opacity: .78; margin: 0 0 32px; }
.hero .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.hero .btn.ghost { background: transparent; color: var(--paper); border-color: color-mix(in srgb, var(--paper) 45%, transparent); }
.hero .btn.ghost:hover { background: var(--paper); color: var(--ink); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- الأقسام والبطاقات ---------- */
section { padding: clamp(40px, 7vw, 88px) 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 32px; }
h2 { font-size: clamp(26px, 4vw, 40px); line-height: 1.25; margin: 0; font-weight: 800; }
h3 { font-size: 20px; margin: 0 0 8px; font-weight: 800; }
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.card {
  display: block; padding: 26px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--border); position: relative; overflow: hidden;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), background .3s ease, color .3s ease, box-shadow .3s ease, border-color .3s ease;
}
a.card:hover, .card.hoverable:hover { transform: translateY(-8px); background: var(--ink); color: var(--paper); border-color: var(--ink); box-shadow: var(--shadow); }
a.card:hover .muted, .card.hoverable:hover .muted { color: color-mix(in srgb, var(--paper) 68%, transparent); }
.card .icon {
  width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 18px;
  background: var(--canvas); transition: background .3s ease, transform .3s ease;
}
a.card:hover .icon, .card.hoverable:hover .icon { background: color-mix(in srgb, var(--paper) 16%, transparent); transform: rotate(-6deg) scale(1.08); }
.tag { display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; border: 1px solid currentColor; opacity: .7; margin-top: 12px; }

.steps { counter-reset: step; display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.step { padding: 26px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.step::before {
  counter-increment: step; content: counter(step); display: grid; place-items: center; width: 42px; height: 42px;
  border-radius: 50%; background: var(--ink); color: var(--paper); font-weight: 800; margin-bottom: 16px;
}

/* ---------- المقالات والصفحات ---------- */
.page-hero { padding: clamp(36px, 6vw, 72px) 0 12px; }
.page-hero h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.25; margin: 0 0 12px; font-weight: 800; }
.breadcrumb { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.breadcrumb a:hover { color: var(--ink); text-decoration: underline; }
.prose { max-width: 780px; }
.prose h2 { font-size: 28px; margin: 40px 0 12px; }
.prose h3 { margin-top: 28px; }
.prose p, .prose li { font-size: 17.5px; }
.prose ul, .prose ol { padding-inline-start: 22px; }
.callout { padding: 20px 24px; border-radius: 20px; border: 1px solid var(--border); border-inline-start: 6px solid var(--ink); background: var(--surface); margin: 24px 0; }
.two-col { display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
.side { position: sticky; top: 96px; display: grid; gap: 16px; }

details { border: 1px solid var(--border); border-radius: 18px; background: var(--surface); padding: 6px 22px; margin-bottom: 12px; transition: border-color .2s ease; }
details[open] { border-color: var(--ink); }
summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::after { content: "+"; font-size: 22px; transition: transform .25s ease; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 0 0 16px; color: var(--muted); }

/* ---------- التذييل ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 48px 0 32px; margin-top: 40px; background: var(--surface); }
.footer-grid { display: grid; gap: 32px; grid-template-columns: 2fr 1fr 1fr 1fr; }
.footer-grid h4 { margin: 0 0 12px; font-size: 15px; }
.footer-grid a { display: block; color: var(--muted); padding: 4px 0; transition: color .2s ease, transform .2s ease; }
.footer-grid a:hover { color: var(--ink); transform: translateX(-4px); }
.copyright { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }

/* ---------- حركة الظهور ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; } .reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; } .reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .4s; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- الاستجابة ---------- */
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
  .side { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .menu-btn { display: grid; margin-inline-start: auto; }
  .nav-links {
    position: absolute; top: 72px; inset-inline: 0; flex-direction: column; padding: 14px 20px 20px;
    background: var(--canvas); border-bottom: 1px solid var(--border);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .25s ease;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .hero { border-radius: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
}