@import url("design-system.css");

/* Homepage layout and components */
body{margin:0;font-family:Arial,Tahoma,sans-serif;background:radial-gradient(circle at 85% 5%,rgba(56,189,248,.14),transparent 28%),linear-gradient(180deg,var(--bg),var(--bg2));color:var(--text);line-height:1.75}.container{width:min(1180px,92%);margin:auto}header{position:sticky;top:0;z-index:50;background:rgba(6,16,28,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;font-weight:800}.brand img{width:46px;height:46px;border-radius:50%}.navlinks{display:flex;gap:18px}.navlinks a{color:var(--muted);text-decoration:none;font-size:.95rem}.navlinks a:hover{color:#fff}.hero{min-height:72vh;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:46px;padding:72px 0 54px}.badge{display:inline-flex;padding:7px 13px;border-radius:999px;border:1px solid rgba(56,189,248,.35);background:rgba(56,189,248,.08);color:#dff7ff}.hero h1{font-size:clamp(2.5rem,7vw,5rem);line-height:1.04;margin:18px 0}.gradient{background:linear-gradient(90deg,var(--blue),#60a5fa,var(--gold));-webkit-background-clip:text;color:transparent}.hero-ar{direction:rtl;font-size:1.55rem;color:#edf6ff}.subtitle{color:var(--muted);max-width:760px;font-size:1.08rem}.buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:11px;border:1px solid var(--line);color:#fff;text-decoration:none;font-weight:700}.primary{background:linear-gradient(135deg,#0284c7,#2563eb)}.secondary{background:rgba(255,255,255,.04)}.overview-btn{background:linear-gradient(135deg,rgba(251,191,36,.18),rgba(245,158,11,.11));border-color:rgba(251,191,36,.48);color:#fff7d6;box-shadow:0 10px 28px rgba(245,158,11,.12)}.overview-btn:hover{border-color:#fbbf24;transform:translateY(-2px)}.hero-logo{text-align:center}.hero-logo img{width:min(390px,90vw);border-radius:28%;filter:drop-shadow(0 26px 60px rgba(0,0,0,.42))}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:40px}.stat{background:var(--panel2);border:1px solid var(--line);border-radius:16px;padding:20px;text-align:center}.stat strong{display:block;font-size:1.9rem;color:var(--blue)}.stat span{color:var(--muted)}section{padding:52px 0}.section-title{text-align:center;margin-bottom:28px}.section-title h2{font-size:clamp(1.9rem,4vw,2.6rem);margin:0}.section-title .ar{direction:rtl;font-size:1.2rem;color:#eef7ff}.section-title p{color:var(--muted);margin:8px 0}.parts,.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.part,.feature{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:17px;padding:22px}.part h3,.feature h3{color:var(--blue);margin-top:0}.part .ar,.feature .ar{direction:rtl;text-align:right}.part a{display:inline-flex;margin-top:10px;color:#dff5ff;text-decoration:none;font-weight:700}.controls{display:grid;grid-template-columns:1fr auto;gap:14px;margin-bottom:24px}#search{width:100%;background:#081626;border:1px solid var(--line);color:#fff;border-radius:12px;padding:13px 15px;font-size:1rem}.filters{display:flex;gap:8px;flex-wrap:wrap}.filter{background:var(--panel2);border:1px solid var(--line);color:#dceaf5;padding:9px 13px;border-radius:999px;cursor:pointer}.filter.active{background:#075985;border-color:var(--blue);color:#fff}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.course-card{display:block;text-decoration:none;color:inherit;background:linear-gradient(180deg,var(--panel),#0b1a2b);border:1px solid var(--line);border-radius:17px;padding:19px;min-height:275px;transition:.2s}.course-card:hover{transform:translateY(-5px);border-color:rgba(56,189,248,.55);box-shadow:0 18px 45px rgba(0,0,0,.25)}.card-top{display:flex;align-items:center;justify-content:space-between}.icon{font-size:1.7rem}.tag{font-size:.72rem;color:#fde68a;border:1px solid rgba(251,191,36,.3);background:rgba(251,191,36,.08);padding:3px 8px;border-radius:999px}.code{margin-top:12px;color:var(--blue);font-size:.82rem;font-weight:700}.course-card h3{margin:7px 0 4px;color:#fff;line-height:1.3}.arabic{direction:rtl;text-align:right;font-weight:700;color:#f5f8fb;min-height:30px}.course-card p{color:var(--muted);font-size:.94rem}.open{color:#bae6fd;font-weight:700;font-size:.88rem}.no-results{display:none;text-align:center;color:var(--muted);padding:32px}.author-box{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px;background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:18px;padding:24px}.author-box h3{color:var(--blue);margin-top:0}.author-box .ar{direction:rtl;text-align:right}.version-pill{display:inline-flex;margin-top:10px;padding:5px 10px;border-radius:999px;border:1px solid rgba(34,197,94,.35);background:rgba(34,197,94,.08);color:#bbf7d0;font-size:.85rem}footer{border-top:1px solid var(--line);padding:40px 0;text-align:center;color:var(--muted)}footer strong{color:#fff}.to-top{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#075985;color:#fff;cursor:pointer;display:none}.academic-profile-links{display:flex;flex-wrap:wrap;gap:11px;margin-top:18px}.academic-profile-link{display:inline-flex;align-items:center;gap:10px;min-width:210px;padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:#081827;color:#fff;text-decoration:none;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.academic-profile-link:hover{transform:translateY(-2px);border-color:rgba(56,189,248,.6);box-shadow:0 12px 26px rgba(0,0,0,.2)}.academic-profile-link .profile-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;font-weight:800;background:#fff;color:#07111f}.academic-profile-link strong,.academic-profile-link small{display:block;line-height:1.25}.academic-profile-link small{margin-top:3px;color:var(--muted);font-size:.76rem}.academic-profile-link.orcid .profile-mark{background:#a6ce39;color:#fff}.academic-profile-link.researchgate .profile-mark{background:#00ccbb;color:#fff;font-size:.8rem}
@media(max-width:900px){.hero{grid-template-columns:1fr;text-align:center}.hero-logo{order:-1}.hero-logo img{width:250px}.buttons{justify-content:center}.stats{grid-template-columns:repeat(2,1fr)}.parts,.features,.course-grid{grid-template-columns:repeat(2,1fr)}.author-box{grid-template-columns:1fr}.navlinks{display:none}}
@media(max-width:620px){.course-grid,.parts,.features{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.controls{grid-template-columns:1fr}.brand span{font-size:.9rem}.academic-profile-links{display:grid}.academic-profile-link{width:100%;min-width:0}}