/* =========================================================
   المخطط التقني — Blueprint Tech Blog
   نظام تصميم مستوحى من المخططات الهندسية (Blueprints)
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@400;500;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --bg:        #0b2338;
  --bg-panel:  #123252;
  --bg-panel-2:#0e2a44;
  --grid-line: rgba(154,196,230,.10);
  --grid-line-strong: rgba(154,196,230,.18);
  --ink:       #e7eef5;
  --ink-dim:   #a9c0d6;
  --ink-faint: #6f8caa;
  --accent:    #f2a93b;   /* قلم التصحيح الكهرماني */
  --accent-2:  #7fd4c1;   /* أخضر مطفأ للروابط */
  --line:      #2e5578;
  --line-soft: #1c3f5e;
  --danger:    #e2735a;
  --radius: 2px;
  --maxw: 1180px;
  --font-display: 'Tajawal', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0/40px 40px,
    var(--bg);
  color:var(--ink);
  font-family:var(--font-display);
  line-height:1.75;
  direction:rtl;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
}

a{ color:var(--accent-2); text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:3px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--accent); outline-offset:3px;
}

img{ max-width:100%; display:block; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:8px;
  text-transform:uppercase;
}
.eyebrow::before{ content:"◈"; font-size:11px; }

h1,h2,h3,h4{ font-family:var(--font-display); font-weight:800; color:var(--ink); margin:0 0 .5em; letter-spacing:-.01em; }
h1{ font-size:clamp(34px,6vw,58px); line-height:1.12; }
h2{ font-size:clamp(24px,3.4vw,34px); line-height:1.25; }
h3{ font-size:20px; }
p{ color:var(--ink-dim); margin:0 0 1.1em; }
strong{ color:var(--ink); }

/* ---------- زخرفة شعرية علامات الزوايا ---------- */
.crosshair{ position:relative; }
.crosshair::before,.crosshair::after,
.crosshair .ch-tl,.crosshair .ch-br{ content:""; }
.corner-marks{ position:absolute; inset:0; pointer-events:none; }
.corner-marks span{
  position:absolute; width:16px; height:16px;
  border:1px solid var(--line);
}
.corner-marks span:nth-child(1){ top:-1px; right:-1px; border-width:1px 1px 0 0; }
.corner-marks span:nth-child(2){ top:-1px; left:-1px; border-width:1px 0 0 1px; }
.corner-marks span:nth-child(3){ bottom:-1px; right:-1px; border-width:0 1px 1px 0; }
.corner-marks span:nth-child(4){ bottom:-1px; left:-1px; border-width:0 0 1px 1px; }

/* ---------- الهيدر ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(11,35,56,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  min-height:76px;
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--ink); }
.brand-mark{
  width:34px; height:34px; border:1px solid var(--accent);
  display:flex; align-items:center; justify-content:center;
  color:var(--accent); font-family:var(--font-mono); font-size:16px;
  transform:rotate(45deg);
  flex:none;
}
.brand-mark span{ transform:rotate(-45deg); }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text b{ font-size:18px; font-weight:800; }
.brand-text small{ font-family:var(--font-mono); font-size:10.5px; color:var(--ink-faint); letter-spacing:.08em; }

.nav-links{ display:flex; align-items:center; gap:28px; }
.nav-links a{
  color:var(--ink-dim); font-size:15px; font-weight:500;
}
.nav-links a:hover{ color:var(--ink); text-decoration:none; }
.nav-links a.active{ color:var(--accent); }

.nav-toggle{
  display:none; background:none; border:1px solid var(--line); color:var(--ink);
  width:40px; height:40px; cursor:pointer; font-family:var(--font-mono);
}

@media (max-width:820px){
  .nav-toggle{ display:block; }
  .nav-links{
    position:absolute; inset-inline:0; top:76px;
    background:var(--bg-panel); border-bottom:1px solid var(--line-soft);
    flex-direction:column; align-items:flex-start; gap:0;
    padding:8px 24px 18px;
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ width:100%; padding:12px 0; border-bottom:1px dashed var(--line-soft); }
}

/* ---------- الهيرو ---------- */
.hero{
  position:relative; overflow:hidden;
  padding:88px 0 64px;
  border-bottom:1px solid var(--line-soft);
}
.hero .wrap{ position:relative; z-index:2; }
.hero-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--grid-line-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px);
  background-size:80px 80px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, black, transparent 75%);
}
.hero-tag{ margin-bottom:18px; }
.hero h1{ max-width:16ch; }
.hero .lede{ max-width:56ch; font-size:18px; margin-top:18px; }
.hero-meta{
  display:flex; gap:28px; margin-top:40px; flex-wrap:wrap;
  font-family:var(--font-mono); font-size:12px; color:var(--ink-faint);
}
.hero-meta b{ color:var(--ink); display:block; font-size:20px; font-family:var(--font-display); font-weight:800; }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:13px 22px; font-weight:700; font-size:15px;
  border:1px solid var(--accent); color:var(--bg);
  background:var(--accent); cursor:pointer;
}
.btn:hover{ background:transparent; color:var(--accent); text-decoration:none; }
.btn.ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn.ghost:hover{ border-color:var(--accent); color:var(--accent); }

/* ---------- شريط إعلانات ---------- */
.ad-slot{
  border:1px dashed var(--line);
  background:var(--bg-panel-2);
  color:var(--ink-faint);
  font-family:var(--font-mono);
  font-size:12px;
  text-align:center;
  padding:22px 12px;
  margin:40px auto;
  max-width:var(--maxw);
}
.ad-slot span{ display:block; letter-spacing:.08em; }
.ad-slot small{ display:block; margin-top:4px; opacity:.7; }

/* ---------- شبكة المقالات ---------- */
.section{ padding:64px 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end;
  margin-bottom:36px; gap:20px; flex-wrap:wrap;
  border-bottom:1px solid var(--line-soft); padding-bottom:20px;
}
.section-head p{ margin:6px 0 0; max-width:50ch; }

.grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:22px;
}
@media (max-width:960px){ .grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .grid{ grid-template-columns:1fr; } }

.card{
  position:relative;
  background:var(--bg-panel);
  border:1px solid var(--line-soft);
  padding:22px;
  display:flex; flex-direction:column; height:100%;
  transition:border-color .18s ease, transform .18s ease;
}
.card:hover{ border-color:var(--accent); transform:translateY(-3px); }
.card-fig{
  font-family:var(--font-mono); font-size:11px; color:var(--accent);
  letter-spacing:.1em; margin-bottom:14px; display:flex; justify-content:space-between;
}
.card h3{ margin-bottom:10px; }
.card h3 a{ color:var(--ink); }
.card h3 a:hover{ color:var(--accent-2); text-decoration:none; }
.card p{ font-size:14.5px; flex:1; }
.card-meta{
  display:flex; gap:14px; font-family:var(--font-mono); font-size:11px;
  color:var(--ink-faint); border-top:1px dashed var(--line-soft); padding-top:12px; margin-top:auto;
}
.tag{
  display:inline-block; font-family:var(--font-mono); font-size:10.5px;
  border:1px solid var(--line); color:var(--ink-dim); padding:3px 8px;
}

/* ---------- CTA / نشرة ---------- */
.cta{
  border:1px solid var(--line-soft);
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0/30px 30px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0/30px 30px,
    var(--bg-panel-2);
  padding:48px; text-align:center; position:relative;
}
.cta h2{ margin-bottom:10px; }
.cta p{ max-width:50ch; margin:0 auto 24px; }

/* ---------- فوتر ---------- */
.site-footer{
  border-top:1px solid var(--line-soft);
  padding:52px 0 26px;
  background:var(--bg-panel-2);
}
.footer-grid{
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:32px;
  padding-bottom:32px; border-bottom:1px solid var(--line-soft);
}
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-grid h4{ font-family:var(--font-mono); font-size:12px; letter-spacing:.1em; color:var(--ink-faint); text-transform:uppercase; margin-bottom:14px; font-weight:600;}
.footer-grid ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
.footer-grid a{ color:var(--ink-dim); font-size:14px; }
.footer-grid a:hover{ color:var(--accent-2); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  padding-top:22px; font-family:var(--font-mono); font-size:12px; color:var(--ink-faint);
}

/* ---------- صفحة المقال ---------- */
.article-header{ padding:56px 0 30px; border-bottom:1px solid var(--line-soft); }
.article-meta-top{
  display:flex; gap:16px; align-items:center; margin-bottom:18px; flex-wrap:wrap;
  font-family:var(--font-mono); font-size:12px; color:var(--ink-faint);
}
.article-header h1{ max-width:22ch; }
.article-sub{ font-size:17px; max-width:60ch; }

.article-body{ max-width:720px; margin:0 auto; padding:48px 0; }
.article-body h2{ margin-top:1.6em; }
.article-body h2::before{
  content:"§"; color:var(--accent); margin-left:8px; font-family:var(--font-mono);
}
.article-body ul,.article-body ol{ color:var(--ink-dim); padding-inline-start:22px; }
.article-body li{ margin-bottom:8px; }

.callout{
  border-inline-start:3px solid var(--accent);
  background:var(--bg-panel);
  padding:18px 20px; margin:28px 0; font-size:15px;
}
.callout b{ display:block; font-family:var(--font-mono); font-size:11px; color:var(--accent); letter-spacing:.1em; margin-bottom:6px; }

.code-panel{
  background:var(--bg-panel-2); border:1px solid var(--line-soft);
  padding:18px; font-family:var(--font-mono); font-size:13px; color:var(--accent-2);
  overflow-x:auto; direction:ltr; text-align:left; margin:24px 0;
}

.related{ border-top:1px solid var(--line-soft); padding:48px 0; }

/* ---------- صفحات عامة ---------- */
.page-header{ padding:60px 0 36px; border-bottom:1px solid var(--line-soft); }
.page-header .lede{ max-width:60ch; font-size:17px; }
.content-block{ max-width:760px; margin:0 auto; padding:48px 24px; }
.content-block h2{ margin-top:1.4em; }
.content-block ul{ color:var(--ink-dim); padding-inline-start:22px; }
.content-block li{ margin-bottom:8px; }

.stat-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin:36px 0; }
@media (max-width:640px){ .stat-row{ grid-template-columns:1fr; } }
.stat{ border:1px solid var(--line-soft); padding:20px; }
.stat b{ font-size:30px; display:block; color:var(--accent); }
.stat span{ font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); }

/* ---------- نموذج الاتصال ---------- */
.form-grid{ display:grid; gap:18px; max-width:560px; }
label{ display:block; font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); margin-bottom:6px; letter-spacing:.05em; }
input,textarea{
  width:100%; background:var(--bg-panel); border:1px solid var(--line);
  color:var(--ink); padding:12px 14px; font-family:var(--font-display); font-size:15px;
}
input:focus,textarea:focus{ border-color:var(--accent); }
textarea{ min-height:140px; resize:vertical; }

.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:48px; }
@media (max-width:700px){ .two-col{ grid-template-columns:1fr; } }

.note-box{
  border:1px dashed var(--line); padding:16px 18px; font-size:13.5px;
  color:var(--ink-faint); margin-top:18px;
}