:root{--background:#fbfcfe;--foreground:#1b2437;--card:#fff;--border:#e1e6ef;--muted:#f1f4f8;--muted-fg:#69758a;--primary:#2f6fd6;--primary-fg:#fff;--primary-soft:#e6f0fd;--accent:#7a55d9;--accent-soft:#f0ebfd;--success:#22a06b;--success-soft:#e3f7ee;--warning:#f0b33c;--warning-soft:#fdf3dc;--destructive:#dc3a2f;--destructive-soft:#fde8e6;--radius:1rem;
--gradient-hero:linear-gradient(135deg,#2f6fd6 0%,#7a55d9 55%,#1b9aa0 100%);--gradient-soft:linear-gradient(140deg,#edf3fd 0%,#f3eefd 100%);--shadow:0 1px 2px rgba(16,24,40,.05),0 6px 20px -8px rgba(16,24,40,.12)}
.dark{--background:#0f1525;--foreground:#eef2f8;--card:#1a2236;--border:rgba(255,255,255,.12);--muted:#222b40;--muted-fg:#a5afc2;--primary:#5d95ea;--primary-fg:#0e1526;--primary-soft:#1d2d4d;--accent:#a184ec;--accent-soft:#2b2448;--success:#3fc08a;--success-soft:#143a2b;--warning:#f3c15a;--warning-soft:#3b3015;--destructive:#ef6a5e;--destructive-soft:#3d1c1a;
--gradient-hero:linear-gradient(135deg,#1e3f7a 0%,#3e2b7d 55%,#14555a 100%);--gradient-soft:linear-gradient(140deg,#151f36 0%,#1d1a36 100%);--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px -10px rgba(0,0,0,.5)}
*,*:before,*:after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Cairo","Tajawal",ui-sans-serif,system-ui,sans-serif;background:var(--background);color:var(--foreground);line-height:1.7;font-size:15px}
a{color:var(--primary);text-decoration:none}
img{max-width:100%}
h1,h2,h3,h4{line-height:1.3;margin:0 0 .5rem;font-weight:800}
h1{font-size:clamp(1.6rem,3.6vw,2.6rem)}h2{font-size:clamp(1.3rem,2.4vw,1.8rem)}h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 .75rem}
.container{max-width:1200px;margin:0 auto;padding:0 1rem}
.muted{color:var(--muted-fg)}.small{font-size:.85rem}.center{text-align:center}.inline{display:inline}
.ic{width:1.1em;height:1.1em;vertical-align:-.18em;flex:none}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.hdr{display:flex;align-items:center;gap:1rem;height:64px}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:800;color:var(--foreground);font-size:1.05rem;white-space:nowrap}
.logo{width:38px;height:38px;border-radius:12px;background:var(--gradient-hero);color:#fff;display:grid;place-items:center}
.logo .ic{width:22px;height:22px}
.nav{display:flex;gap:.25rem;margin-inline-start:1rem;flex:1}
.nav a{color:var(--muted-fg);padding:.4rem .8rem;border-radius:999px;font-weight:600;font-size:.93rem}
.nav a:hover{color:var(--foreground);background:var(--muted)}
.nav a.active{color:var(--primary);background:var(--primary-soft)}
.hdr-actions{display:flex;align-items:center;gap:.5rem;margin-inline-start:auto}
.icon-btn{border:1px solid var(--border);background:var(--card);color:var(--foreground);width:38px;height:38px;border-radius:12px;display:grid;place-items:center;cursor:pointer}
.menu-btn{display:none}
@media (max-width:900px){.menu-btn{display:grid}.nav{display:none;position:absolute;top:64px;inset-inline:0;background:var(--card);border-bottom:1px solid var(--border);flex-direction:column;padding:.75rem 1rem;margin:0}.nav.open{display:flex}.hdr-actions .btn-ghost{display:none}}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:1px solid transparent;border-radius:12px;padding:.6rem 1.15rem;font:inherit;font-weight:700;cursor:pointer;text-align:center;line-height:1.4;transition:.15s}
.btn-sm{padding:.38rem .8rem;font-size:.88rem;border-radius:10px}
.btn-lg{padding:.8rem 1.5rem;font-size:1.02rem}
.btn-primary{background:var(--primary);color:var(--primary-fg)}.btn-primary:hover{filter:brightness(1.07)}
.btn-accent{background:var(--accent);color:#fff}
.btn-soft{background:var(--primary-soft);color:var(--primary)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--foreground)}
.btn-white{background:#fff;color:#2f6fd6}.btn-outline-white{border-color:rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.08)}
.btn-danger{background:var(--destructive);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.w100{width:100%}
/* hero */
.hero{background:var(--gradient-hero);color:#fff;padding:4.5rem 0 4rem;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;inset:auto -10% -40% auto;width:520px;height:520px;border-radius:50%;background:rgba(255,255,255,.07)}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:2.5rem;align-items:center;position:relative;z-index:1}
.pill{display:inline-flex;align-items:center;gap:.4rem;padding:.3rem .85rem;border-radius:999px;background:rgba(255,255,255,.16);font-size:.85rem;font-weight:600;margin-bottom:1rem}
.hero h1{font-size:clamp(2rem,4.6vw,3.2rem);margin-bottom:1rem}
.hero p{font-size:1.08rem;opacity:.93;max-width:620px}
.hero .actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.5rem}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.stat-g{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);padding:1.25rem;backdrop-filter:blur(6px)}
.stat-g b{display:block;font-size:1.7rem;font-weight:800}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero{padding:3rem 0}}
/* sections */
.section{padding:3.5rem 0}.section.soft{background:var(--gradient-soft)}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}
.sec-head p{margin:0}
.page-head{padding:2.25rem 0 1rem}
.grid{display:grid;gap:1rem}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:980px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}.g4.keep2{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}
.card.hover{transition:.15s}.card.hover:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--primary) 40%,var(--border))}
.card h3{margin-bottom:.35rem}
.feat-ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-size:1.3rem;margin-bottom:.75rem}
.feat-ic.v{background:var(--accent-soft);color:var(--accent)}
.sub-ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--muted);font-size:1.6rem}
.row{display:flex;gap:.75rem;align-items:center}.between{justify-content:space-between}.wrap{flex-wrap:wrap}
.bar{height:8px;border-radius:99px;background:var(--muted);overflow:hidden}.bar span{display:block;height:100%;background:var(--primary);border-radius:99px}
.badge{display:inline-flex;align-items:center;gap:.25rem;padding:.12rem .6rem;border-radius:999px;font-size:.78rem;font-weight:700;background:var(--muted);color:var(--muted-fg);white-space:nowrap}
.b-primary{background:var(--primary-soft);color:var(--primary)}.b-success{background:var(--success-soft);color:var(--success)}.b-warning{background:var(--warning-soft);color:#a86d00}.dark .b-warning{color:var(--warning)}.b-danger{background:var(--destructive-soft);color:var(--destructive)}.b-accent{background:var(--accent-soft);color:var(--accent)}
.num{width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-weight:800}
/* faq */
details.faq{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.25rem;margin-bottom:.75rem}
details.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between}
details.faq summary:after{content:"⌄";color:var(--muted-fg)}details.faq[open] summary:after{transform:rotate(180deg)}
details.faq p{margin:.75rem 0 0;color:var(--muted-fg)}
.cta{background:var(--gradient-hero);color:#fff;border-radius:calc(var(--radius)*1.5);padding:2.5rem;text-align:center}
.quote{font-size:1rem}.quote .q{font-size:2rem;color:var(--accent);line-height:1}
/* forms */
label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.3rem}
.input,select,textarea{width:100%;font:inherit;color:var(--foreground);background:var(--card);border:1px solid var(--border);border-radius:12px;padding:.6rem .8rem;outline:none}
.input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 20%,transparent)}
textarea{min-height:90px;resize:vertical}
.field{margin-bottom:1rem}.err{color:var(--destructive);font-size:.82rem;margin-top:.25rem}
.auth{max-width:460px;margin:2.5rem auto}
.check{display:flex;gap:.5rem;align-items:center;font-weight:500}.check input{width:18px;height:18px}
.alert{padding:.8rem 1rem;border-radius:12px;margin:1rem 0;font-weight:600}
.alert-ok{background:var(--success-soft);color:var(--success)}.alert-err{background:var(--destructive-soft);color:var(--destructive)}.alert-info{background:var(--primary-soft);color:var(--primary)}.alert-warn{background:var(--warning-soft);color:#8a5a00}.dark .alert-warn{color:var(--warning)}
/* tables */
.table-wrap{overflow-x:auto}
table.t{width:100%;border-collapse:collapse;font-size:.92rem}
.t th,.t td{padding:.65rem .75rem;border-bottom:1px solid var(--border);text-align:start;vertical-align:middle}
.t th{color:var(--muted-fg);font-weight:700;font-size:.82rem;background:var(--muted)}
/* pricing */
.plan{display:flex;flex-direction:column}.plan.hl{border:2px solid var(--primary);transform:translateY(-6px)}
.plan .price{font-size:2.4rem;font-weight:800}.plan ul{list-style:none;padding:0;margin:1rem 0;flex:1}.plan li{padding:.3rem 0;display:flex;gap:.5rem}.plan li .ic{color:var(--success)}
/* subject page */
.subj{display:grid;grid-template-columns:320px 1fr;gap:1.25rem;align-items:start}
@media (max-width:900px){.subj{grid-template-columns:1fr}.subj aside{order:2}}
.unit{margin-bottom:1rem}.unit h4{font-size:.95rem;margin-bottom:.4rem}
.lesson-link{display:flex;justify-content:space-between;gap:.5rem;padding:.5rem .65rem;border-radius:10px;color:var(--foreground);font-size:.9rem}
.lesson-link:hover{background:var(--muted)}.lesson-link.cur{background:var(--primary-soft);color:var(--primary);font-weight:700}
.lesson-link .done{color:var(--success)}
.video{aspect-ratio:16/9;border-radius:var(--radius);background:var(--gradient-hero);display:grid;place-items:center;color:#fff;overflow:hidden;position:relative}
.video iframe,.video video{position:absolute;inset:0;width:100%;height:100%;border:0}
.video .ic{width:64px;height:64px}
.qa{padding:.65rem .8rem;border-radius:12px;background:var(--muted);margin-bottom:.5rem}.qa .ans{margin-top:.35rem;padding-inline-start:.75rem;border-inline-start:3px solid var(--primary)}
/* exam */
.qcard{margin-bottom:1rem}.opt{display:flex;gap:.6rem;align-items:center;padding:.6rem .8rem;border:1px solid var(--border);border-radius:12px;margin-bottom:.5rem;cursor:pointer;font-weight:500}
.opt:has(input:checked){border-color:var(--primary);background:var(--primary-soft)}
.opt.right{border-color:var(--success);background:var(--success-soft)}.opt.wrong{border-color:var(--destructive);background:var(--destructive-soft)}
.tabs{display:flex;gap:.5rem;margin-bottom:1rem;flex-wrap:wrap}.tabs a{padding:.45rem 1rem;border-radius:999px;background:var(--muted);color:var(--foreground);font-weight:700}.tabs a.on{background:var(--primary);color:var(--primary-fg)}
/* dashboards */
.kpi b{display:block;font-size:1.6rem;font-weight:800}.kpi .muted{font-size:.85rem}
.chart{width:100%;height:auto}.chart .grid{stroke:var(--border)}.chart .ax{fill:var(--muted-fg);font-size:12px;font-family:inherit}
.list-item{display:flex;justify-content:space-between;gap:.75rem;padding:.65rem 0;border-bottom:1px dashed var(--border)}.list-item:last-child{border:0}
.dash-grid{display:grid;grid-template-columns:2fr 1fr;gap:1rem}@media (max-width:900px){.dash-grid{grid-template-columns:1fr}}
/* footer */
.site-footer{margin-top:3rem;background:var(--gradient-soft);border-top:1px solid var(--border);padding:2.5rem 0 1rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2rem}
.fgrid h4{font-size:1rem}.fgrid a:not(.brand):not(.btn){display:block;color:var(--muted-fg);padding:.15rem 0}.fgrid a:hover{color:var(--primary)}
.ci{display:flex;gap:.5rem;align-items:center;color:var(--muted-fg);margin-bottom:.4rem}
.qr-mini{display:flex;gap:.75rem;align-items:center;margin-top:.5rem}.qr-mini img{border-radius:10px;background:#fff;padding:4px}
.copy{border-top:1px solid var(--border);margin-top:2rem;padding-top:1rem;font-size:.85rem;color:var(--muted-fg);text-align:center}
@media (max-width:860px){.fgrid{grid-template-columns:1fr 1fr}}@media (max-width:520px){.fgrid{grid-template-columns:1fr}}
.toast{position:fixed;bottom:1.25rem;left:50%;transform:translateX(-50%) translateY(150%);background:var(--foreground);color:var(--background);padding:.7rem 1.2rem;border-radius:12px;font-weight:700;transition:.25s;z-index:99;max-width:90vw;opacity:0;visibility:hidden;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1;visibility:visible}
.empty{text-align:center;padding:2.5rem;color:var(--muted-fg)}
.lock{text-align:center;padding:2rem}