/* ===================================================
   سیستم طراحی: «نقشه‌ی مدار» — ساده، تمیز، با اشاره‌ی ظریف به برق/الکترونیک
   =================================================== */

:root{
  --bg:        #F7F7F4;
  --surface:   #FFFFFF;
  --ink:       #15171B;
  --muted:     #686F78;
  --line:      #E3E4E0;
  --accent:    #2354A6;   /* آبی برق */
  --accent-2:  #B8632E;   /* مس */
  --accent-soft: #EAF0FB;
  --radius:    6px;
  --maxw:      880px;
  --font-body: 'Vazirmatn', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Vazirmatn', monospace;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

a{ color:var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }
img{ max-width:100%; display:block; }

h1,h2,h3{ font-weight:700; line-height:1.35; margin:0 0 .5em; }
h1{ font-size:clamp(1.8rem, 3.2vw, 2.5rem); }
h2{ font-size:1.5rem; }
h3{ font-size:1.15rem; }
p{ margin:0 0 1em; }

/* ===== focus visibility ===== */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; transition-duration:0.01ms !important; }
}

/* ===== eyebrow / mono labels ===== */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.04em;
  color:var(--accent);
  text-transform:uppercase;
  display:inline-block;
  margin-bottom:.6em;
}

/* ===== trace divider (عنصر امضادار صفحه) ===== */
.trace-divider{
  height:10px;
  background-image:
    radial-gradient(circle, var(--accent) 1.6px, transparent 1.6px),
    linear-gradient(to left, transparent 0, var(--line) 0);
  background-size: 48px 10px, 100% 1px;
  background-position: 0 center, 0 center;
  background-repeat: repeat-x, no-repeat;
  opacity:.55;
}

/* ===== header ===== */
.site-header{ background:var(--surface); position:sticky; top:0; z-index:50; }
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 24px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:700; font-size:1.05rem; color:var(--ink);
}
.brand:hover{ text-decoration:none; color:var(--accent); }
.brand-mark{ color:var(--accent); display:flex; }

.main-nav{ display:flex; gap:28px; }
.main-nav a{ color:var(--muted); font-weight:500; font-size:.95rem; padding:6px 0; position:relative; }
.main-nav a:hover{ color:var(--ink); text-decoration:none; }
.main-nav a.active{ color:var(--accent); }
.main-nav a.active::after{
  content:''; position:absolute; right:0; left:0; bottom:-4px; height:2px; background:var(--accent);
}

.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:6px; }
.nav-toggle span{ width:22px; height:2px; background:var(--ink); display:block; }

/* ===== footer ===== */
.site-footer{ margin-top:80px; }
.footer-inner{
  padding:28px 24px 48px;
  display:flex; flex-wrap:wrap; gap:10px 24px; align-items:center; justify-content:space-between;
  color:var(--muted); font-size:.9rem;
}
.footer-links{ display:flex; gap:18px; }
.footer-copy{ width:100%; font-family:var(--font-mono); font-size:.78rem; opacity:.7; margin:0; }

/* ===== hero ===== */
.hero{ padding:64px 0 40px; }
.hero-role{ font-family:var(--font-mono); color:var(--accent-2); font-size:.95rem; }
.hero p.lead{ font-size:1.1rem; color:var(--muted); max-width:60ch; }
.hero-en-name{
  font-family:var(--font-mono); direction:ltr; text-align:right;
  color:var(--muted); font-size:.95rem; margin:0 0 1.1em; letter-spacing:.02em;
}
.hero-cta{ display:flex; gap:14px; margin-top:24px; flex-wrap:wrap; }

.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 20px; border-radius:var(--radius);
  font-weight:600; font-size:.95rem; border:1px solid transparent; cursor:pointer;
}
.btn:hover{ text-decoration:none; }
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:#1d4688; }
.btn-outline{ border-color:var(--line); color:var(--ink); background:var(--surface); }
.btn-outline:hover{ border-color:var(--accent); color:var(--accent); }
.btn-danger{ background:#B3261E; color:#fff; }
.btn-sm{ padding:7px 14px; font-size:.85rem; }

/* ===== section ===== */
.section{ padding:48px 0; }
.section-head{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom:24px; gap:12px; }
.section-head a.see-all{ font-size:.9rem; font-family:var(--font-mono); }

/* ===== cards grid ===== */
.grid{ display:grid; gap:20px; grid-template-columns:repeat(2, 1fr); }
.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; display:flex; flex-direction:column; gap:10px;
  transition:border-color .15s ease, transform .15s ease;
}
.card:hover{ border-color:var(--accent); transform:translateY(-2px); }
.card h3 a{ color:var(--ink); }
.card h3 a:hover{ color:var(--accent); text-decoration:none; }
.card .summary{ color:var(--muted); font-size:.95rem; margin:0; flex:1; }
.card .meta{ font-family:var(--font-mono); font-size:.78rem; color:var(--accent-2); }

.tags{ display:flex; flex-wrap:wrap; gap:6px; }
.tag{
  font-family:var(--font-mono); font-size:.74rem; color:var(--accent);
  background:var(--accent-soft); padding:3px 9px; border-radius:99px;
}

/* ===== single article/project page ===== */
.article-head{ padding:48px 0 16px; }
.article-meta{ font-family:var(--font-mono); font-size:.85rem; color:var(--muted); margin-bottom:6px; }
.article-body{ padding:8px 0 40px; max-width:70ch; }
.article-body p{ margin-bottom:1.3em; }
.article-body img{ border-radius:var(--radius); margin:1.5em 0; }
.article-body h2{ margin-top:1.6em; }
.back-link{ font-family:var(--font-mono); font-size:.85rem; }

/* ===== about / resume ===== */
.timeline{ list-style:none; margin:0; padding:0; border-right:2px solid var(--line); }
.timeline li{ position:relative; padding:0 28px 28px 0; }
.timeline li::before{
  content:''; position:absolute; right:-7px; top:4px; width:12px; height:12px;
  border-radius:50%; background:var(--surface); border:2px solid var(--accent);
}
.timeline .t-period{ font-family:var(--font-mono); font-size:.78rem; color:var(--accent-2); display:block; margin-bottom:4px; }
.timeline .t-title{ font-weight:700; }
.timeline .t-place{ color:var(--muted); font-size:.92rem; }

.skill-list{ display:flex; flex-wrap:wrap; gap:8px; padding:0; list-style:none; margin:0; }
.skill-list li{
  font-family:var(--font-mono); font-size:.82rem; border:1px solid var(--line);
  padding:6px 12px; border-radius:99px; background:var(--surface);
}

/* ===== empty state ===== */
.empty{ padding:40px 0; color:var(--muted); text-align:center; font-family:var(--font-mono); }

/* ===== forms (used by admin too) ===== */
.field{ margin-bottom:18px; }
.field label{ display:block; font-weight:600; margin-bottom:6px; font-size:.92rem; }
.field .hint{ color:var(--muted); font-size:.8rem; margin-top:4px; }
input[type=text], input[type=password], input[type=email], input[type=url], textarea, select{
  width:100%; padding:11px 13px; border:1px solid var(--line); border-radius:var(--radius);
  font-family:var(--font-body); font-size:.95rem; background:var(--surface); color:var(--ink);
}
textarea{ min-height:160px; resize:vertical; line-height:1.7; }
input:focus, textarea:focus, select:focus{ border-color:var(--accent); }
.checkbox-field{ display:flex; align-items:center; gap:8px; }
.checkbox-field input{ width:auto; }

.alert{ padding:12px 16px; border-radius:var(--radius); margin-bottom:20px; font-size:.92rem; }
.alert-success{ background:#E7F5EC; color:#1D6B3D; border:1px solid #BFE6CC; }
.alert-error{ background:#FBEAEA; color:#A3231C; border:1px solid #F2C5C2; }

/* ===== admin layout ===== */
.admin-body{ background:#F2F3F1; }
.admin-shell{ display:flex; min-height:100vh; }
.admin-sidebar{
  width:220px; background:var(--ink); color:#fff; padding:24px 18px; flex-shrink:0;
}
.admin-sidebar .brand{ color:#fff; margin-bottom:30px; }
.admin-sidebar nav{ display:flex; flex-direction:column; gap:4px; }
.admin-sidebar a{
  color:#C9CDD3; padding:10px 12px; border-radius:var(--radius); font-size:.92rem; font-weight:500;
}
.admin-sidebar a:hover{ background:rgba(255,255,255,.08); text-decoration:none; color:#fff; }
.admin-sidebar a.active{ background:var(--accent); color:#fff; }
.admin-main{ flex:1; padding:36px 40px; max-width:900px; }
.admin-topbar{ display:flex; justify-content:space-between; align-items:center; margin-bottom:28px; }
.admin-table{ width:100%; border-collapse:collapse; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.admin-table th, .admin-table td{ padding:12px 14px; text-align:right; border-bottom:1px solid var(--line); font-size:.92rem; }
.admin-table th{ background:#FAFAF9; font-family:var(--font-mono); font-size:.78rem; color:var(--muted); }
.admin-table tr:last-child td{ border-bottom:none; }
.row-actions{ display:flex; gap:10px; }
.stat-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-bottom:32px; }
.stat-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:20px; }
.stat-card .num{ font-family:var(--font-mono); font-size:1.8rem; color:var(--accent); }
.stat-card .label{ color:var(--muted); font-size:.85rem; }

/* ===== responsive ===== */
@media (max-width: 760px){
  .nav-toggle{ display:flex; }
  .main-nav{
    position:absolute; top:100%; right:0; left:0; background:var(--surface);
    flex-direction:column; gap:0; border-top:1px solid var(--line);
    display:none; padding:8px 24px 16px;
  }
  .main-nav.open{ display:flex; }
  .main-nav a{ padding:12px 0; border-bottom:1px solid var(--line); }
  .grid{ grid-template-columns:1fr; }
  .admin-shell{ flex-direction:column; }
  .admin-sidebar{ width:100%; display:flex; align-items:center; justify-content:space-between; padding:14px 18px; }
  .admin-sidebar nav{ flex-direction:row; flex-wrap:wrap; }
  .admin-main{ padding:24px 18px; }
  .stat-grid{ grid-template-columns:1fr; }
}