/* ==========================================================
   OutUniversity — Design System
   هویت بصری: "A University Beyond Boundaries"
   این فایل تنها منبع رنگ/تایپوگرافی سایت است — در همه صفحات لینک شود
   تا هیچ صفحه‌ای رنگ یا فونت جدا از بقیه نداشته باشد.
   ========================================================== */

:root{
  --navy:#0F2C5C;
  --navy-deep:#081C3C;
  --amber:#F2A104;
  --teal:#0EA5A5;
  --ink:#14213D;
  --muted:#5B6478;
  --bg:#F7F9FC;
  --line:#E4E9F2;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 4px 15px rgba(15,44,92,.05);
  --shadow-lg:0 20px 50px rgba(15,44,92,.12);
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Plus Jakarta Sans',sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;}
h1,h2,h3,.display{font-family:'Fraunces',serif;}
a{color:inherit;}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;font-weight:700;color:var(--teal);}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}

/* ===== NAVBAR ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(247,249,252,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav-inner{max-width:1200px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:28px;}
.brand{font-family:'Fraunces',serif;font-weight:700;font-size:1.35rem;color:var(--navy);text-decoration:none;display:flex;align-items:center;gap:8px;}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--amber);}
.nav-links{display:flex;gap:22px;margin-inline-start:8px;flex:1;}
.nav-links a{font-size:.92rem;font-weight:600;text-decoration:none;color:var(--muted);transition:.2s;}
.nav-links a:hover,.nav-links a.active{color:var(--navy);}
.nav-actions{display:flex;gap:12px;align-items:center;}

/* ===== BUTTONS ===== */
.btn{border:none;border-radius:999px;padding:10px 20px;font-weight:700;font-size:.88rem;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:.2s;}
.btn-ghost{background:transparent;color:var(--navy);}
.btn-ghost:hover{background:#EAEFF8;}
.btn-primary{background:var(--navy);color:#fff;}
.btn-primary:hover{background:var(--navy-deep);transform:translateY(-1px);}
.btn-amber{background:var(--amber);color:var(--navy-deep);}
.btn-amber:hover{background:#e09300;}
.btn-outline{background:transparent;border:1px solid var(--line);color:var(--navy);}
.btn-outline:hover{border-color:var(--navy);}

/* ===== SECTION HEADERS ===== */
.section{padding:64px 0;}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:32px;gap:20px;flex-wrap:wrap;}
.section-head h1,.section-head h2{font-size:1.9rem;font-weight:600;margin:6px 0 0;color:var(--navy);}
.section-head p{color:var(--muted);margin:8px 0 0;max-width:520px;}
.view-all{font-weight:700;font-size:.88rem;color:var(--navy);text-decoration:none;white-space:nowrap;}
.view-all:hover{color:var(--teal);}

/* ===== PAGE HEADER BAND (category / course / article) ===== */
.page-header{background:var(--navy);color:#fff;padding:60px 0 46px;}
.page-header .eyebrow{color:var(--amber);}
.page-header h1{font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:600;margin:10px 0 8px;}
.page-header p{color:#C6D2E8;max-width:640px;line-height:1.6;margin:0;}
.breadcrumb-x{display:flex;gap:8px;align-items:center;font-size:.82rem;color:#9FB0D0;margin-bottom:6px;}
.breadcrumb-x a{color:#C6D2E8;text-decoration:none;}
.breadcrumb-x a:hover{color:var(--amber);}

/* ===== COURSE CARDS ===== */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.course-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);transition:.25s;display:flex;flex-direction:column;}
.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent;}
.course-thumb{aspect-ratio:16/10;object-fit:cover;width:100%;background:#EAEFF8;}
.course-body{padding:16px 16px 18px;flex:1;display:flex;flex-direction:column;}
.course-inst{font-size:.74rem;color:var(--muted);font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:8px;}
.course-inst img{width:20px;height:20px;border-radius:50%;object-fit:cover;}
.course-title{font-weight:700;font-size:.98rem;line-height:1.35;margin:0 0 10px;}
.course-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:.82rem;}
.rating{color:#B4690E;font-weight:700;display:flex;align-items:center;gap:4px;}
.rating i{color:var(--amber);}
.price{font-weight:800;color:var(--navy);}
.course-cat-tag{font-size:.7rem;font-weight:700;color:var(--teal);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px;display:block;}

/* ===== SIDEBAR / CARDS ===== */
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:24px;}
.side-card h4{margin:0 0 16px;font-weight:700;font-size:1.05rem;color:var(--navy);}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.88rem;transition:.2s;}
.side-list li a:hover{background:var(--bg);color:var(--navy);}
.side-list li a i{color:var(--teal);}

/* ===== ARTICLE CARDS ===== */
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);}
.article-thumb{aspect-ratio:16/9;object-fit:cover;width:100%;}
.article-body{padding:18px;}
.article-cat{font-size:.72rem;font-weight:700;color:var(--teal);text-transform:uppercase;letter-spacing:.06em;}
.article-title{font-weight:700;font-size:1rem;margin:8px 0 10px;line-height:1.4;}
.article-meta{font-size:.78rem;color:var(--muted);display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:12px;}

/* ===== ARTICLE BODY (single) ===== */
.prose{font-size:1.02rem;line-height:1.85;color:var(--ink);}
.prose h2{font-size:1.5rem;margin:32px 0 14px;color:var(--navy);}
.prose h3{font-size:1.2rem;margin:26px 0 12px;color:var(--navy);}
.prose p{margin:0 0 18px;}
.prose img{border-radius:var(--radius);margin:20px 0;}
.prose ul,.prose ol{margin:0 0 18px;padding-inline-start:22px;}
.prose blockquote{border-inline-start:4px solid var(--amber);padding:4px 20px;color:var(--muted);font-style:italic;margin:20px 0;}
.prose a{color:var(--teal);text-decoration:underline;}

/* ===== ALERT / EMPTY STATE ===== */
.alert-x{background:#EAF7F7;border:1px solid #CDEEEE;color:#0C6363;padding:20px;border-radius:var(--radius);text-align:center;}

/* ===== FOOTER ===== */
footer{background:var(--navy-deep);color:#AFC0DC;padding:64px 0 30px;margin-top:70px;}
.footer-logo{font-family:'Fraunces',serif;font-weight:700;font-size:1.4rem;color:#fff;text-decoration:none;}
.footer-logo span{color:var(--amber);}
.footer-link{display:block;color:#AFC0DC;text-decoration:none;font-size:.88rem;margin-bottom:10px;}
.footer-link:hover{color:#fff;}
.social-icon{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 2fr;gap:24px;}

@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .nav-links{display:none;}
  .grid-4,.grid-2{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head{align-items:flex-start;}
}