:root{
  --bg:#f5f7fb;--ink:#0c1625;--muted:#667085;--card:#ffffff;--line:#e7ebf2;
  --brand:#123e7c;--brand2:#2563eb;--accent:#f5b942;--soft:#eef4ff;--ok:#137a4b;--bad:#b42318;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,"Noto Sans Arabic",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{text-decoration:none;color:inherit}
.container{width:min(1120px,92%);margin:auto}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800}
.logo img{width:58px;height:58px;object-fit:contain}
.logo small{display:block;color:var(--muted);font-weight:600}
.navlinks{display:flex;gap:10px;flex-wrap:wrap}
.navlinks a{padding:9px 12px;border-radius:10px;color:#314158;font-weight:700}
.navlinks a:hover{background:var(--soft);color:var(--brand)}
.hero{padding:72px 0 46px;background:radial-gradient(circle at 80% 20%,#dce9ff 0,transparent 34%),linear-gradient(180deg,#fff,#f5f7fb)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
.kicker{display:inline-block;padding:8px 12px;border-radius:999px;background:var(--soft);color:var(--brand);font-weight:800;font-size:14px}
h1{font-size:clamp(42px,6vw,78px);line-height:1.02;margin:18px 0 18px;letter-spacing:-2px}
.hero p{font-size:19px;color:var(--muted);max-width:740px}
.hero-card{background:#0f2f5d;color:white;border-radius:28px;padding:28px;box-shadow:0 30px 70px rgba(15,47,93,.22)}
.hero-card img{display:block;width:150px;margin:0 auto 16px}
.hero-card .stat{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.16);padding:12px 0}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:13px;font-weight:800;border:1px solid transparent;cursor:pointer}
.btn.primary{background:var(--brand2);color:white}
.btn.secondary{background:white;border-color:var(--line)}
.section{padding:52px 0}
.section h2{font-size:34px;margin:0 0 8px}
.section-lead{color:var(--muted);margin:0 0 28px}
.lessons{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.lesson-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:24px;transition:.2s;box-shadow:0 10px 30px rgba(16,24,40,.04)}
.lesson-card:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(16,24,40,.08)}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 10px;border-radius:999px;background:var(--soft);color:var(--brand);font-size:13px;font-weight:800}
.lesson-card h3{font-size:27px;margin:14px 0 4px}
.ar{direction:rtl;font-family:"Noto Sans Arabic",Arial,sans-serif;color:#344054}
.lesson-card p{color:var(--muted)}
.card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:20px;padding-top:17px;border-top:1px solid var(--line)}
.go{font-weight:900;color:var(--brand2)}
.footer{padding:36px 0;border-top:1px solid var(--line);color:var(--muted);background:white}
.lesson-hero{padding:44px 0 24px;background:linear-gradient(180deg,#fff,#f8faff)}
.breadcrumb{font-size:14px;color:var(--muted);font-weight:700}
.lesson-title{font-size:clamp(38px,5vw,62px);margin:14px 0 8px;letter-spacing:-1.6px}
.lesson-sub{font-size:21px;margin:0 0 16px}
.meta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.meta{padding:8px 11px;border:1px solid var(--line);background:white;border-radius:10px;color:#475467;font-weight:700}
.lesson-layout{display:grid;grid-template-columns:260px 1fr;gap:26px;align-items:start}
.sidebar{position:sticky;top:96px;background:white;border:1px solid var(--line);border-radius:18px;padding:14px}
.sidebar a{display:block;padding:10px 12px;border-radius:10px;color:#475467;font-weight:700}
.sidebar a:hover{background:var(--soft);color:var(--brand)}
.content-section{background:white;border:1px solid var(--line);border-radius:22px;padding:28px;margin-bottom:20px}
.content-section h2{font-size:28px;margin-top:0}
.video-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.video-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fbfcfe}
.video-placeholder{aspect-ratio:16/9;background:linear-gradient(135deg,#0d2d58,#1e5a9e);display:flex;align-items:center;justify-content:center;color:white;text-align:center;padding:20px}
.play{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:white;color:var(--brand);font-size:22px;margin:auto auto 8px}
.video-body{padding:16px}
.video-body h3{margin:0 0 5px}
.script{white-space:pre-line;background:white;border:1px solid var(--line);border-radius:12px;padding:12px;color:#26364d}
.vocab-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.vocab{border:1px solid var(--line);border-radius:15px;padding:15px;background:#fbfcfe}
.vocab strong{font-size:18px;color:var(--brand)}
.vocab .meaning{direction:rtl;color:#344054;font-weight:700}
.grammar-list{display:grid;gap:10px}
.grammar-item{padding:14px 16px;border-left:4px solid var(--brand2);background:var(--soft);border-radius:10px}
.quiz-item{padding:18px 0;border-bottom:1px solid var(--line)}
.quiz-item:last-child{border-bottom:none}
.quiz-item p{font-weight:800}
.option{display:block;padding:9px 11px;margin:8px 0;border:1px solid var(--line);border-radius:10px;cursor:pointer;background:#fff}
.quiz-actions{display:flex;gap:10px;align-items:center;margin-top:18px;flex-wrap:wrap}
.result{font-weight:900}
.result.ok{color:var(--ok)} .result.bad{color:var(--bad)}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:20px}
.note{padding:14px 16px;border-radius:12px;background:#fff8e8;border:1px solid #f5d889;color:#694f00}
@media(max-width:850px){
 .hero-grid,.lesson-layout{grid-template-columns:1fr}
 .hero-card{max-width:520px}
 .sidebar{position:static;display:flex;overflow:auto;gap:4px}
 .sidebar a{white-space:nowrap}
}
@media(max-width:650px){
 .navlinks{display:none}
 .lessons,.video-grid,.vocab-grid{grid-template-columns:1fr}
 h1{letter-spacing:-1px}
 .hero{padding-top:42px}
 .content-section{padding:20px}
 .lesson-card h3{font-size:23px}
}
@media print{
 .topbar,.sidebar,.btn,.lesson-nav,.footer{display:none!important}
 body{background:white}
 .lesson-layout{display:block}
 .content-section{break-inside:avoid;border:0;padding:0 0 18px}
 .video-placeholder{display:none}
}

.video-player{aspect-ratio:16/9;background:#07182c;display:flex;align-items:center;justify-content:center}.video-player video{width:100%;height:100%;object-fit:contain;background:#000}

.slang-theme{--brand:#4b2a9b;--brand2:#6b46d9;--accent:#ef3f8f;--soft:#f1ecff}
.slang-hero{padding:72px 0 46px;background:radial-gradient(circle at 82% 15%,#eadfff 0,transparent 35%),linear-gradient(180deg,#fff,#f8f5ff)}
.slang-card{background:linear-gradient(145deg,#321c69,#6537ba)}
.slang-btn{background:linear-gradient(135deg,#5b36c9,#e43f8d);color:#fff;border:0;box-shadow:0 10px 24px rgba(91,54,201,.2)}
.slang-btn:hover{filter:brightness(1.04);transform:translateY(-1px)}
.slang-promo{padding-top:28px;padding-bottom:10px}
.course-banner{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:32px;border-radius:26px;background:linear-gradient(135deg,#f1ecff,#fff3f8);border:1px solid #ddd1ff;box-shadow:0 16px 40px rgba(75,42,155,.08)}
.course-banner h2{margin:10px 0 4px;font-size:38px}
.course-banner p{max-width:720px;color:var(--muted);margin:0}
.slang-active{border-color:#cbbcff;box-shadow:0 14px 38px rgba(91,54,201,.12)}
.locked{opacity:.78;background:#f8f7fb}
.locked:hover{transform:none;box-shadow:0 10px 30px rgba(16,24,40,.04)}
.usage{float:right;padding:4px 7px;border-radius:999px;font-size:10px;font-weight:900;letter-spacing:.04em}
.usage.everyday{background:#e7f8f0;color:#137a4b}.usage.casual{background:#fff3da;color:#9a5600}.usage.trendy{background:#ffe7f2;color:#aa215f}
.slang-lesson-hero{background:radial-gradient(circle at 82% 0,#e9deff 0,transparent 34%),linear-gradient(180deg,#fff,#faf8ff)}
.disabled-btn{background:#ececf2;color:#8a8fa0;cursor:default;border:1px solid #dedfe6}
@media(max-width:720px){.course-banner{display:block}.course-banner .btns{margin-top:20px}}

.kids-promo{padding-top:28px;padding-bottom:10px}
.kids-banner{overflow:hidden;padding:0;background:linear-gradient(135deg,#e8f8ff,#fff7d7 58%,#f3edff);border-color:#bde8f5;min-height:300px}
.kids-copy{padding:34px;position:relative;z-index:2;max-width:720px}
.kids-kicker{background:#dff7ff;color:#0879aa}
.kids-btn{background:linear-gradient(135deg,#1478ce,#25a8ff);color:#fff;border:0;box-shadow:0 10px 24px rgba(20,120,206,.2)}
.kids-btn:hover{filter:brightness(1.04);transform:translateY(-1px)}
.kids-cast{align-self:end;width:min(460px,42%);margin:0 -18px -24px 0;filter:drop-shadow(0 18px 28px rgba(20,75,120,.18))}
@media(max-width:720px){.kids-copy{padding:28px 24px}.kids-cast{display:block;width:112%;max-width:none;margin:8px -6% -16px}}

.kids-level-links{gap:8px}
.kids-level-links .kids-btn{min-width:92px;padding:11px 15px}
.alphabet-promo{padding-top:28px;padding-bottom:10px}
.alphabet-banner{overflow:hidden;padding:0;background:radial-gradient(circle at 85% 15%,rgba(239,190,91,.22),transparent 28%),linear-gradient(135deg,#071d29,#0b3340 56%,#102b43);border-color:#b99245;color:#fff;min-height:330px}
.alphabet-copy{padding:36px;position:relative;z-index:2;max-width:760px}
.alphabet-banner h2{color:#fff}
.alphabet-banner p{color:#e9f2f4;font-size:18px;direction:rtl;text-align:right}
.alphabet-banner .meta{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#f8f1dd}
.alphabet-kicker{background:#f7e9c4;color:#173847}
.alphabet-btn{background:linear-gradient(135deg,#d8ad56,#f2d486);color:#102733;border:0;box-shadow:0 12px 28px rgba(0,0,0,.2)}
.alphabet-btn:hover{filter:brightness(1.05);transform:translateY(-1px)}
.alphabet-cover{align-self:center;width:min(250px,25%);margin:28px 48px 28px 0;border-radius:10px;box-shadow:0 22px 48px rgba(0,0,0,.42);transform:rotate(1.5deg)}
@media(max-width:720px){.alphabet-copy{padding:28px 24px}.alphabet-cover{display:block;width:64%;max-width:260px;margin:0 auto 30px;transform:none}.kids-level-links .kids-btn{flex:1 1 42%}}

.safety-strip{background:#16102a;color:#fff;padding:16px 0}
.safety-strip .container{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.safety-strip strong{color:#ffd56a}
.safety-strip span{color:#e5def7}
.progress-panel{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:28px 32px;border-radius:24px;background:linear-gradient(135deg,#fff,#f3eeff);border:1px solid #ddd1ff}
.progress-panel h2{margin:10px 0 0}
.progress-panel p{margin:0;color:var(--muted)}
.progress-number{min-width:170px;text-align:center;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.progress-number strong{display:block;font-size:30px;color:var(--brand)}
.progress-number span{font-size:13px;color:var(--muted);font-weight:700}
.spaced{margin-top:16px}
.practice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.practice-grid p{margin:6px 0 0;color:var(--muted)}
.workbook-main{padding:36px 0 72px}
.workbook-lesson{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;margin:0 0 26px;break-before:page}
.workbook-lesson:first-of-type{break-before:auto}
.workbook-lesson h2{margin:12px 0 0;font-size:32px}
.workbook-ar{font-size:18px;margin-bottom:10px}
.workbook table{width:100%;border-collapse:collapse;margin:12px 0 18px}
.workbook th,.workbook td{padding:10px;border:1px solid var(--line);text-align:left;vertical-align:top}
.workbook th{background:var(--soft)}
.writing-lines{height:110px;margin-top:16px;background:repeating-linear-gradient(180deg,transparent 0,transparent 27px,#d8dde8 28px)}
@media(max-width:650px){.progress-panel{display:block}.progress-number{margin-top:18px}.practice-grid{grid-template-columns:1fr}}
@media print{
 .workbook .topbar,.workbook .lesson-hero .btns{display:none!important}
 .workbook-lesson{border:0;border-radius:0;padding:0;margin:0;break-before:page}
 .workbook-lesson:first-of-type{break-before:auto}
 .workbook table{font-size:12px}
 .safety-strip{background:#fff;color:#000;border:1px solid #ddd}
}