:root{--blue: #1e90ff;--blue-dark: #0f6fd6;--purple: #5a46bf;--gold: #ffd700;--gold-dark: #e6b800;--navy: #09203f;--ink: #1b2a41;--muted: #64748b;--bg: #f4f7fb;--card: #ffffff;--line: #e5eaf1;--radius: 16px;--shadow: 0 8px 24px rgba(9, 32, 63, .08);--gradient: linear-gradient(135deg, #1e90ff 0%, #5a46bf 100%)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Tajawal,Cairo,system-ui,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}h1,h2,h3,h4,p{margin:0}a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 20px}.topbar{background:var(--navy);position:sticky;top:0;z-index:50;box-shadow:0 2px 12px #00000026}.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}.brand{display:flex;align-items:center;gap:12px}.brand-logo{width:46px;height:46px;object-fit:contain;filter:drop-shadow(0 0 6px rgba(255,215,0,.35))}.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-text strong{color:#fff;font-family:Cairo,sans-serif;font-size:20px;font-weight:900;letter-spacing:.5px}.brand-text strong::selection{background:var(--gold)}.brand-text small{color:var(--gold);font-size:12px;font-weight:700}.topnav{display:flex;gap:6px}.topnav a{color:#cbd5e1;font-weight:600;font-size:14px;padding:8px 14px;border-radius:10px;transition:.2s}.topnav a:hover{color:#fff;background:#ffffff14}.topnav a.active{color:var(--navy);background:var(--gold);font-weight:800}.hero{position:relative;overflow:hidden;background:radial-gradient(1000px 400px at 80% -20%,rgba(30,144,255,.35),transparent 60%),radial-gradient(800px 400px at 10% 0%,rgba(90,70,191,.35),transparent 60%),linear-gradient(135deg,#0a1f45,#123a75 55%,#2a4d9e);color:#fff;text-align:center;padding:72px 0 88px}.hero-badge{display:inline-block;background:#ffd70026;color:var(--gold);border:1px solid 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h2{font-family:Cairo,sans-serif;font-size:24px;font-weight:800}.section-count{background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px}.stage-tabs{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:-40px;position:relative;z-index:5}.stage-tab{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;cursor:pointer;text-align:right;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}.stage-tab:hover{transform:translateY(-3px);box-shadow:0 14px 32px #09203f24;border-color:var(--blue)}.stage-tab.active{border:2px solid var(--tab-color, var(--blue));background:linear-gradient(135deg,#f4f9ff,#f6f3ff)}.stage-tab-icon{font-size:30px;line-height:1;width:48px;height:48px;display:grid;place-items:center;background:var(--bg);border-radius:12px}.stage-tab.active 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18px;border-radius:12px;cursor:pointer;transition:.2s}.btn-back:hover{border-color:var(--blue);color:var(--blue)}.subjects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px}.subject-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 4px 14px #09203f0d;display:flex;flex-direction:column;transition:box-shadow .2s}.subject-card:hover{box-shadow:var(--shadow)}.subject-card-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}.subject-icon{width:44px;height:44px;display:grid;place-items:center;font-size:22px;background:var(--bg);border-radius:12px;flex-shrink:0}.subject-name{font-family:Cairo,sans-serif;font-size:17px;font-weight:800}.subject-level{font-size:12px;color:var(--muted);font-weight:600}.book-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.book-row{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--bg);border-radius:10px}.book-row svg{color:var(--blue);flex-shrink:0}.book-title{flex:1;font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-actions{display:flex;gap:6px;flex-shrink:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-family:inherit;font-weight:700;border-radius:10px;cursor:pointer;transition:.2s;border:none}.btn-sm{font-size:12px;padding:6px 12px}.btn-primary{background:var(--gradient);color:#fff}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px)}.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}.subject-empty{color:var(--muted);font-size:13px;background:var(--bg);border:1px dashed var(--line);padding:14px;border-radius:10px;text-align:center}.subject-card-action{margin-top:16px;background:none;border:none;color:var(--blue);font-family:inherit;font-size:13px;font-weight:700;cursor:pointer;padding:0;align-self:flex-start}.subject-card-action:hover{color:var(--blue-dark)}.search-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:18px}.search-result{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 4px 14px #09203f0d}.search-result-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}.search-result-head h4{font-family:Cairo,sans-serif;font-size:16px;font-weight:800}.search-result-head p{font-size:12px;color:var(--muted);margin-top:3px}.empty-state{text-align:center;padding:70px 20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.empty-icon{font-size:48px;margin-bottom:14px}.empty-state h3{font-family:Cairo,sans-serif;font-size:20px;font-weight:800;margin-bottom:8px}.empty-state p{color:var(--muted);font-size:14px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#09203f8c;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:grid;place-items:center;padding:20px;z-index:100;animation:fadeIn .2s ease}.modal{width:100%;max-width:640px;max-height:82vh;background:#fff;border-radius:20px;overflow:hidden;display:flex;flex-direction:column;animation:slideUp .25s ease;box-shadow:0 24px 64px #09203f4d}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;background:var(--gradient);color:#fff}.modal-head h3{font-family:Cairo,sans-serif;font-size:19px;font-weight:800}.modal-head p{font-size:12px;opacity:.9;margin-top:3px}.modal-close{width:36px;height:36px;border:none;background:#ffffff2e;color:#fff;font-size:22px;border-radius:50%;cursor:pointer;line-height:1;transition:.2s}.modal-close:hover{background:#ffffff52}.modal-list{list-style:none;margin:0;padding:16px 24px 24px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.modal-row{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--bg);border-radius:12px}.modal-row-num{width:26px;height:26px;display:grid;place-items:center;background:var(--gradient);color:#fff;font-size:12px;font-weight:800;border-radius:8px;flex-shrink:0}.modal-row-title{flex:1;font-size:14px;font-weight:600}.modal-row-actions{display:flex;gap:6px;flex-shrink:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}.footer{background:var(--navy);color:#cbd5e1;margin-top:auto}.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:20px;padding-top:36px;padding-bottom:28px}.footer-brand{display:flex;align-items:center;gap:14px}.footer-logo{width:48px;height:48px;object-fit:contain}.footer-brand strong{font-family:Cairo,sans-serif;color:#fff;font-size:18px;font-weight:800}.footer-brand p{font-size:13px;margin-top:4px}.footer-links{display:flex;gap:18px}.footer-links a{font-size:14px;font-weight:600;transition:color .2s}.footer-links a:hover{color:var(--gold)}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.08);padding:16px;font-size:13px;color:#94a3b8}@media (max-width: 768px){.topnav{display:none}.stage-tabs{grid-template-columns:1fr;margin-top:-28px}.hero{padding:52px 0 64px}.hero-sub{font-size:14px}.level-detail-head{flex-direction:column;align-items:flex-start}.subjects-grid,.search-grid{grid-template-columns:1fr}.modal-row{flex-wrap:wrap}.modal-row-title{flex-basis:100%;order:-1}.footer-inner{flex-direction:column;align-items:flex-start}}