/* ============================================================
   Last Updates — Arabic (RTL) blog styles
   Shares brand tokens with the main site (styles.css)
   ============================================================ */

:root {
  --bg-0: #07090f;
  --bg-1: #0b0f1a;
  --bg-2: #0f1626;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --fg: #f4f6fb;
  --fg-muted: #a4adc2;
  --fg-dim: #6b7488;
  --nav-bg: rgba(7, 9, 15, 0.72);
  --blue: #3b82f6;
  --cyan: #22d3ee;
  --orange: #f97316;
  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #22d3ee 50%, #f97316 100%);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --container: 860px;
  --container-wide: 1180px;
}

:root[data-theme="light"] {
  --bg-0: #f5f7fb;
  --bg-1: #eef1f7;
  --bg-2: #e6eaf2;
  --surface: rgba(15, 22, 38, 0.04);
  --surface-strong: rgba(15, 22, 38, 0.06);
  --border: rgba(15, 22, 38, 0.08);
  --border-strong: rgba(15, 22, 38, 0.16);
  --fg: #0b1426;
  --fg-muted: #4a5468;
  --fg-dim: #7a8398;
  --nav-bg: rgba(245, 247, 251, 0.85);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Tajawal", "Inter", system-ui, sans-serif;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(59,130,246,0.10), transparent 60%),
    radial-gradient(1000px 500px at 0% 10%, rgba(34,211,238,0.07), transparent 55%),
    var(--bg-0);
  color: var(--fg);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 22px; }
.container-wide { max-width: var(--container-wide); }

a { color: inherit; }

/* ===== Top nav ===== */
.blog-nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.blog-nav-inner {
  max-width: var(--container-wide); margin: 0 auto; padding: 14px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.blog-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fg); font-weight: 700; }
.blog-brand .mark {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--gradient-accent); color: #04111f; font-weight: 800; font-size: 14px;
}
.blog-nav-links { display: flex; align-items: center; gap: 20px; }
.blog-nav-links a { text-decoration: none; color: var(--fg-muted); font-size: 15px; font-weight: 500; transition: color .2s; }
.blog-nav-links a:hover { color: var(--fg); }
.theme-toggle {
  background: var(--surface); border: 1px solid var(--border); color: var(--fg);
  width: 38px; height: 38px; border-radius: 10px; cursor: pointer; display: grid; place-items: center;
}
.theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ===== Listing header ===== */
.list-head { text-align: center; padding: 64px 0 34px; }
.eyebrow {
  font-family: "JetBrains Mono", monospace; font-size: 13px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--cyan);
}
.list-head h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.25; margin-top: 14px; }
.list-head .grad {
  background: var(--gradient-accent); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.list-head p { color: var(--fg-muted); max-width: 620px; margin: 16px auto 0; font-size: 17px; }

/* ===== Category filter chips ===== */
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 26px 0 40px; }
.chip {
  background: var(--surface); border: 1px solid var(--border); color: var(--fg-muted);
  padding: 8px 16px; border-radius: 999px; font-size: 14px; text-decoration: none; transition: all .2s;
}
.chip:hover, .chip.active { color: var(--fg); border-color: var(--border-strong); background: var(--surface-strong); }

/* ===== Post cards grid ===== */
.post-grid {
  max-width: var(--container-wide); margin: 0 auto; padding: 0 22px 80px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px;
}
.post-card {
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; text-decoration: none; color: var(--fg); transition: transform .25s, border-color .25s;
}
.post-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.post-card .thumb {
  height: 168px; background: var(--gradient-accent); position: relative; display: grid; place-items: center;
}
.post-card .thumb span {
  font-family: "JetBrains Mono", monospace; color: #04111f; font-weight: 700;
  font-size: 13px; letter-spacing: .08em; opacity: .85;
}
.post-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.post-card .cat { font-size: 12.5px; font-weight: 600; color: var(--cyan); font-family: "JetBrains Mono", monospace; }
.post-card h3 { font-size: 19px; line-height: 1.5; }
.post-card .excerpt { color: var(--fg-muted); font-size: 14.5px; flex: 1; }
.post-card .meta { color: var(--fg-dim); font-size: 13px; margin-top: 6px; }

/* ===== Article ===== */
.article-head { padding: 56px 0 20px; }
.breadcrumb { font-size: 14px; color: var(--fg-dim); margin-bottom: 18px; }
.breadcrumb a { color: var(--cyan); text-decoration: none; }
.article-cat { color: var(--cyan); font-family: "JetBrains Mono", monospace; font-size: 13px; font-weight: 600; }
.article-head h1 { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.35; margin: 12px 0 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--fg-dim); font-size: 14px; align-items: center; }
.article-meta .author { color: var(--fg); font-weight: 600; }

.tldr {
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius);
  padding: 22px 24px; margin: 30px 0; position: relative;
}
.tldr::before {
  content: "الخلاصة السريعة"; display: inline-block;
  font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: .08em;
  color: var(--cyan); margin-bottom: 8px;
}
.tldr p { margin: 0; color: var(--fg); font-size: 16px; }

.article-body { padding-bottom: 40px; font-size: 17.5px; }
.article-body h2 { font-size: 26px; margin: 40px 0 14px; line-height: 1.4; }
.article-body h3 { font-size: 21px; margin: 28px 0 10px; }
.article-body p { color: var(--fg-muted); margin: 14px 0; }
.article-body strong { color: var(--fg); }
.article-body ul, .article-body ol { color: var(--fg-muted); margin: 14px 0; padding-right: 26px; }
.article-body li { margin: 8px 0; }
.article-body a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote {
  border-right: 3px solid var(--cyan); background: var(--surface); margin: 22px 0;
  padding: 14px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--fg);
}

.takeaways {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(34,211,238,0.05));
  border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 24px 26px; margin: 36px 0;
}
.takeaways h2 { margin-top: 0; }
.takeaways ul { list-style: none; padding: 0; }
.takeaways li { position: relative; padding-right: 30px; color: var(--fg); }
.takeaways li::before { content: "✓"; position: absolute; right: 0; color: var(--cyan); font-weight: 700; }

/* FAQ */
.faq { margin: 40px 0; }
.faq details {
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 20px; margin: 12px 0;
  background: var(--surface);
}
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 0; font-size: 17px; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "＋"; color: var(--cyan); margin-left: 10px; font-weight: 700; }
.faq details[open] summary::before { content: "－"; }
.faq details p { color: var(--fg-muted); padding-bottom: 16px; margin: 0; }

.sources { border-top: 1px solid var(--border); margin-top: 40px; padding-top: 24px; }
.sources h3 { font-size: 18px; margin-bottom: 12px; }
.sources ul { padding-right: 22px; color: var(--fg-muted); font-size: 15px; }

.article-cta {
  text-align: center; background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg); padding: 40px 26px; margin: 50px 0 30px;
}
.article-cta h3 { font-size: 24px; margin-bottom: 10px; }
.article-cta p { color: var(--fg-muted); margin-bottom: 20px; }
.btn-primary {
  display: inline-block; background: var(--gradient-accent); color: #04111f; font-weight: 700;
  padding: 13px 26px; border-radius: 999px; text-decoration: none;
}

/* Footer */
.blog-footer {
  border-top: 1px solid var(--border); text-align: center; padding: 34px 22px;
  color: var(--fg-dim); font-size: 14px;
}
.blog-footer a { color: var(--cyan); text-decoration: none; }

@media (max-width: 640px) {
  .blog-nav-links { gap: 14px; }
  .blog-nav-links a.hide-sm { display: none; }
  .article-body { font-size: 16.5px; }
}