:root{--primary:#0f766e;--primary2:#14b8a6;--dark:#0f172a;--muted:#64748b;--bg:#f8fafc;--card:#fff;--line:#e2e8f0;--gold:#f59e0b;--danger:#dc2626;--success:#16a34a;--shadow:0 18px 45px rgba(15,23,42,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--dark);line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%}.topbar{height:76px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:20}.brand{display:flex;gap:12px;align-items:center}.brand-mark{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary2));display:grid;place-items:center;color:#fff;font-size:28px;font-family:Tahoma}.brand strong{font-size:20px;display:block;line-height:1}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:5px}.topnav{display:flex;align-items:center;gap:20px;font-size:14px}.user-chip{background:#ecfeff;padding:7px 12px;border-radius:999px;color:var(--primary);font-weight:700}.page{min-height:calc(100vh - 140px)}.container{width:min(1180px,calc(100% - 32px));margin:auto}.hero{padding:80px 0 60px;background:radial-gradient(circle at 80% 20%,rgba(20,184,166,.18),transparent 34%),linear-gradient(180deg,#f0fdfa,#f8fafc)}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.14em;font-size:11px;font-weight:800;color:var(--primary);margin-bottom:8px}.hero h1{font-size:clamp(42px,6vw,72px);line-height:1.05;margin:0 0 20px;letter-spacing:-.04em}.hero h1 span{color:var(--primary)}.hero p{font-size:19px;color:#475569;max-width:680px}.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:12px 18px;font-weight:800;cursor:pointer;font-size:14px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 10px 25px rgba(15,118,110,.22)}.btn-outline{background:#fff;border:1px solid var(--line);color:var(--dark)}.btn-danger{background:#fee2e2;color:#991b1b}.btn-success{background:#dcfce7;color:#166534}.btn-sm{padding:8px 12px;font-size:12px;border-radius:9px}.hero-card{background:#0f172a;color:#fff;border-radius:28px;padding:30px;box-shadow:var(--shadow);position:relative;overflow:hidden}.arabic-big{font-family:Tahoma,"Arial";font-size:64px;direction:rtl;line-height:1.4}.word-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-top:1px solid rgba(255,255,255,.12)}.word-row span:last-child{font-family:Tahoma;font-size:26px}.section{padding:72px 0}.section-title{text-align:center;max-width:720px;margin:0 auto 38px}.section-title h2{font-size:38px;line-height:1.2;margin:5px 0 12px}.section-title p{color:var(--muted)}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 8px 24px rgba(15,23,42,.04)}.card h3{margin:0 0 8px}.card p{color:var(--muted)}.icon{width:48px;height:48px;border-radius:14px;background:#ccfbf1;color:var(--primary);display:grid;place-items:center;font-size:23px;margin-bottom:16px}.stat{padding:20px}.stat .num{font-size:30px;font-weight:900}.stat .label{color:var(--muted);font-size:13px}.page-heading{padding:32px max(24px,calc((100vw - 1180px)/2)) 12px}.page-heading h1{margin:0;font-size:34px}.dashboard{width:min(1180px,calc(100% - 32px));margin:10px auto 60px}.dashboard-grid{display:grid;grid-template-columns:240px 1fr;gap:24px}.sidebar{background:#0f172a;color:#e2e8f0;border-radius:20px;padding:18px;height:max-content;position:sticky;top:96px}.sidebar a{display:block;padding:10px 12px;border-radius:10px;margin:4px 0}.sidebar a:hover,.sidebar a.active{background:#1e293b;color:#5eead4}.content{min-width:0}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}.table th{background:#f8fafc;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:#64748b}.badge{display:inline-flex;padding:4px 9px;border-radius:999px;font-size:11px;font-weight:800}.badge-success{background:#dcfce7;color:#166534}.badge-warning{background:#fef3c7;color:#92400e}.badge-muted{background:#e2e8f0;color:#475569}.badge-primary{background:#ccfbf1;color:#115e59}.form-card{max-width:760px;margin:30px auto;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:800;margin-bottom:6px}.input,.select,.textarea{width:100%;padding:12px 13px;border:1px solid #cbd5e1;border-radius:11px;background:#fff;font:inherit;outline:none}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary2);box-shadow:0 0 0 3px rgba(20,184,166,.12)}.textarea{min-height:120px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.alert{width:min(1180px,calc(100% - 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1180px)/2));font-size:13px;color:var(--muted)}.auth-wrap{min-height:calc(100vh - 140px);display:grid;place-items:center;padding:40px 16px}.auth-card{width:min(480px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow)}.auth-card h1{margin:0 0 8px}.muted{color:var(--muted)}.text-right{text-align:right}.actions{display:flex;gap:8px;flex-wrap:wrap}.empty{text-align:center;padding:50px;color:var(--muted)}.certificate{background:#fff;border:10px double #0f766e;padding:50px;text-align:center;max-width:900px;margin:30px auto}.certificate .arabic{font-size:34px;font-family:Tahoma;direction:rtl}.certificate h1{font-size:42px}.install-wrap{width:min(760px,calc(100% - 32px));margin:50px auto}.code-note{background:#0f172a;color:#e2e8f0;border-radius:12px;padding:14px;font-family:monospace;font-size:13px}@media(max-width:900px){.topnav a:not(.btn),.user-chip{display:none}.hero-grid,.dashboard-grid,.lesson-layout{grid-template-columns:1fr}.sidebar{position:static}.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}.hero{padding-top:50px}}@media(max-width:600px){.hero h1{font-size:42px}.grid-2,.grid-3,.grid-4,.form-row{grid-template-columns:1fr}.topbar{padding:0 16px}.brand small{display:none}.footer{flex-direction:column;gap:6px}.arabic-big{font-size:44px}.page-heading h1{font-size:28px}.form-card{margin:20px 16px}}