:root{
  --bg:#f4ebdb; --card:#fffaf1; --line:#e2d1b2; --line-2:#d6c098;
  --ink:#1f2a2b; --ink-soft:#4d5a59; --mute:#7f8b88;
  --teal:#0f3b40; --teal-2:#16545a; --teal-soft:#e2efec;
  --gold:#c9a24a; --gold-hi:#f3d98f; --gold-soft:#f8ecc9;
  --coral:#e2475a; --coral-soft:#fde4e4; --green:#22a24a; --green-soft:#e2f5e6;
  --wa:#25d366;
  --serif:"Playfair Display",Georgia,serif;
  --sans:"Cairo",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;min-height:100vh}
button,input,select{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
.wrap{max-width:820px;margin:0 auto;padding:0 14px}
.ar{direction:rtl}
.muted{color:var(--mute)}

/* top bar */
.topbar{position:sticky;top:0;z-index:30;background:rgba(10,33,37,.96);color:#f4efe3;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:2px solid var(--gold)}
.topbar .wrap{display:flex;align-items:center;gap:10px;min-height:54px}
.topbar .logo{font-family:var(--serif);font-weight:800;font-size:17px;white-space:nowrap}
.topbar .logo span{color:#e9c46a}
.topbar .sp{flex:1}
.topbar .hi{font-size:13px;font-weight:800;opacity:.9;white-space:nowrap}
.topbar .row{flex-wrap:nowrap}
.tb-btn{min-height:36px;padding:0 12px;border-radius:10px;font-size:13px;font-weight:800;background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}
.tb-btn.gold{background:linear-gradient(180deg,#f8e2a2,#e9c46a);color:#1c1406;border-color:transparent}

/* generic */
.card{background:var(--card);border:1.5px solid var(--line);border-radius:20px;padding:16px;box-shadow:0 8px 20px -16px rgba(60,40,10,.45)}
.card+.card{margin-top:12px}
h2.h{font-family:var(--serif);font-size:26px;color:var(--teal);line-height:1.15}
.sub-h{font-size:14px;font-weight:700;color:var(--gold);margin-top:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:46px;padding:0 16px;border-radius:13px;font-size:15px;font-weight:800;background:var(--teal);color:#fff;border:1.5px solid var(--teal)}
.btn.block{width:100%}
.btn.gold{background:linear-gradient(180deg,#f8e2a2,#e9c46a 55%,#cf9f48);color:#1c1406;border-color:#d9b25a}
.btn.green{background:var(--green);border-color:var(--green)}
.btn.coral{background:var(--coral);border-color:var(--coral)}
.btn.wa{background:linear-gradient(180deg,#3fe07b,#25d366 45%,#128c4b);border-color:#1fae55}
.btn.ghost{background:#fff;color:var(--teal);border-color:var(--line-2)}
.btn.sm{min-height:38px;padding:0 12px;font-size:13.5px;border-radius:11px}
.btn:disabled{opacity:.45}
.btn:active{transform:scale(.97)}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.field{display:block;margin-top:10px}
.field>span{display:block;font-size:12.5px;font-weight:800;color:var(--teal-2);margin-bottom:4px}
.input{width:100%;min-height:46px;border-radius:12px;border:1.5px solid var(--line-2);background:#fff;padding:0 12px;font-size:16px;font-weight:600;color:var(--ink)}
.input:focus{outline:2px solid var(--gold);border-color:var(--gold)}
.toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);background:var(--teal);color:#fff;font-weight:800;font-size:14px;padding:11px 16px;border-radius:12px;z-index:100;box-shadow:0 10px 30px rgba(0,0,0,.3);max-width:92vw;text-align:center}
.spin{display:inline-block;width:18px;height:18px;border:3px solid rgba(0,0,0,.15);border-top-color:var(--teal);border-radius:50%;animation:sp 0.8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.center{display:grid;place-items:center;min-height:40vh}

/* status / banners */
.banner{border-radius:18px;padding:14px;margin-top:14px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.banner .t{flex:1;min-width:200px}
.banner b{display:block;font-size:16px}
.banner span{display:block;font-size:13.5px;font-weight:700;opacity:.85;margin-top:2px}
.banner.warn{background:#fff3d6;border:1.5px solid #f0cf7a;color:#5b4308}
.banner.bad{background:var(--coral-soft);border:1.5px solid #f3b9bf;color:#7d1a28}
.banner.ok{background:var(--teal);color:#f4efe3;border:1.5px solid var(--teal)}
.picks{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.pick{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:10px;text-align:center}
.pick b{display:block;font-size:24px;color:#f3d98f;line-height:1.1}
.pick small{display:block;font-size:11.5px;font-weight:700;opacity:.85;margin-top:2px}

/* topics */
.sec-title{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;margin:22px 2px 10px}
.topics{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.topic{position:relative;background:var(--card);border:1.5px solid var(--line);border-radius:20px;padding:16px;display:flex;flex-direction:column;gap:6px;min-height:170px}
.topic .em{font-size:34px;line-height:1}
.topic h3{font-family:var(--serif);font-size:21px;color:var(--teal);line-height:1.15}
.topic .tar{font-size:14px;font-weight:700;color:var(--gold);direction:rtl;text-align:left}
.topic .st{margin-top:auto;padding-top:8px}
.topic.open{border-color:#9fd3ad}
.topic.locked{opacity:.92}
.topic .lock{position:absolute;top:12px;right:12px;font-size:12px;font-weight:800;padding:3px 9px;border-radius:999px;background:#efe5d2;color:var(--mute)}
.topic.open .lock{background:var(--green-soft);color:var(--green)}
.topic.free .lock{background:var(--gold-soft);color:#6b5110}
.empty{text-align:center;padding:30px 10px;color:var(--mute);font-weight:700}

/* lesson viewer */
.viewer{position:fixed;inset:0;z-index:50;background:var(--bg);display:flex;flex-direction:column}
.viewer .vbar{display:flex;align-items:center;gap:10px;padding:8px 12px;background:#0a2125;color:#fff;border-bottom:2px solid var(--gold)}
.viewer .vbar b{font-size:15px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.viewer iframe{flex:1;width:100%;border:0;background:var(--bg)}

/* login */
.login{max-width:420px;margin:24px auto}

/* pricing */
.cur{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin:12px 0}
.cur button{min-height:38px;padding:0 14px;border-radius:999px;font-weight:800;background:#fff;border:1.5px solid var(--line-2);color:var(--teal)}
.cur button.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.plans{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.plan{border-radius:22px;padding:18px;border:1.5px solid var(--line);background:var(--card);display:flex;flex-direction:column;gap:6px}
.plan.best{background:linear-gradient(165deg,#16434a,#0d2b30);color:#f4efe3;border-color:#0d2b30}
.plan .tag{align-self:flex-start;font-size:11px;font-weight:800;letter-spacing:.1em;padding:3px 9px;border-radius:999px;background:var(--gold-soft);color:#6b5110}
.plan.best .tag{background:linear-gradient(180deg,#f8e2a2,#e9c46a);color:#1c1406}
.plan h3{font-family:var(--serif);font-size:22px}
.plan .price{font-size:34px;font-weight:800;line-height:1.1}
.plan .price small{font-size:14px;font-weight:700;opacity:.75}
.plan ul{list-style:none;margin:6px 0 10px;display:grid;gap:5px;font-size:14px;font-weight:700}
.plan ul li::before{content:"✓ ";color:var(--green)}
.plan.best ul li::before{color:#7ff0a2}
.plan .btn{margin-top:auto}

/* footer */
.foot{margin-top:34px;background:linear-gradient(165deg,#16434a,#0d2b30);color:#f4efe3;padding:22px 0 18px;border-top:3px solid var(--gold);text-align:center}
.foot .soc{display:flex;justify-content:center;gap:10px;margin-top:12px}
.foot .soc a{width:44px;height:44px;border-radius:13px;display:grid;place-items:center}
.foot .soc svg{width:21px;height:21px}
.foot .fb{background:#1877f2}.foot .ig{background:linear-gradient(115deg,#f9a03f,#f2545b 35%,#d6249f 65%,#7a3cf0)}.foot .tt{background:#0b0b0d;box-shadow:-2px 2px 0 #25f4ee,2px 2px 0 #fe2c55}
.foot p{font-size:12px;font-weight:700;opacity:.75;margin-top:12px;line-height:1.6}
.foot b{color:#e9c46a}

/* ===== ADMIN ===== */
.admin{direction:rtl;text-align:right;padding-bottom:40px}
.admin .tabs{display:flex;gap:6px;overflow-x:auto;padding:12px 0 4px;scrollbar-width:none}
.admin .tabs button{flex:0 0 auto;min-height:42px;padding:0 14px;border-radius:12px;font-weight:800;font-size:14px;background:#fff;color:var(--teal);border:1.5px solid var(--line-2)}
.admin .tabs button.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.admin .tabs .n{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;margin-inline-start:5px;border-radius:10px;background:var(--coral);color:#fff;font-size:11px}
.admin h2{font-size:20px;font-weight:800;color:var(--teal);margin:14px 2px 8px}
.picker{display:grid;grid-template-columns:1fr auto;gap:8px}
.picker select{appearance:auto}
.alert{display:flex;align-items:center;justify-content:space-between;gap:8px;background:#fff3d6;border:1.5px solid #f0cf7a;color:#5b4308;border-radius:14px;padding:10px 12px;margin-top:10px;font-weight:800;font-size:14px}
.u-head{display:flex;align-items:flex-start;gap:10px;flex-wrap:wrap}
.u-head .nm{font-size:22px;font-weight:800;color:var(--teal);flex:1}
.badge{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:800;padding:4px 10px;border-radius:999px}
.badge.student{background:#e6e0ff;color:#4a3aa8}
.badge.subscriber{background:var(--gold-soft);color:#6b5110}
.badge.admin{background:var(--teal);color:#fff}
.badge.on{background:var(--green-soft);color:var(--green)}
.badge.off{background:var(--coral-soft);color:var(--coral)}
.kv{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px;margin-top:12px}
.kv div{background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:8px 10px}
.kv small{display:block;font-size:11.5px;font-weight:800;color:var(--mute)}
.kv b{font-size:17px;color:var(--teal)}
.big-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.big-actions .btn{min-height:54px;font-size:15px}
.tlist{display:grid;gap:6px;margin-top:8px}
.trow{display:flex;align-items:center;gap:10px;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:8px 10px;min-height:52px}
.trow.on{border-color:#9fd3ad;background:#f3fbf5}
.trow .tn{flex:1;font-weight:800;font-size:15px}
.trow .tn small{display:block;font-size:12px;color:var(--mute);font-weight:700}
.sw{position:relative;width:52px;height:30px;border-radius:999px;background:#d9cdb6;flex:0 0 auto;transition:background .2s}
.sw::after{content:"";position:absolute;top:3px;right:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 2px 5px rgba(0,0,0,.25);transition:transform .2s}
.sw.on{background:var(--green)}
.sw.on::after{transform:translateX(-22px)}
.pay{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid #efe4cf;font-size:14px;font-weight:700}
.pay .a{font-weight:800;color:var(--teal);white-space:nowrap}
.pay .d{flex:1;color:var(--mute)}
.pay button{background:transparent;color:var(--coral);font-size:15px;padding:4px 8px}
.seg2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.seg2 button,.seg4 button{min-height:50px;border-radius:12px;font-weight:800;background:#fff;border:1.5px solid var(--line-2);color:var(--teal);font-size:15px}
.seg2 button.on,.seg4 button.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.seg4{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.seg4 button{min-height:42px;font-size:13.5px}
.check{display:flex;align-items:center;gap:8px;margin-top:12px;font-weight:800;font-size:15px}
.check input{width:22px;height:22px;accent-color:var(--green)}
.creds{background:var(--teal);color:#fff;border-radius:16px;padding:14px;margin-top:12px}
.creds .cl{display:flex;justify-content:space-between;gap:8px;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.15);font-weight:800;font-size:16px}
.creds .cl span{opacity:.75;font-size:13px}
.creds .cl b{direction:ltr;font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:.04em}
.exp{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:10px 12px}
.exp+.exp{margin-top:8px}
.exp .w{flex:1;min-width:140px}
.exp .w b{display:block;font-size:16px}
.exp .w small{font-weight:800}
.exp .late{color:var(--coral)} .exp .soon{color:#9a7410}
.money{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}
.money div{background:var(--teal);color:#fff;border-radius:14px;padding:12px;text-align:center}
.money b{display:block;font-size:24px;color:#f3d98f}
.money small{font-weight:800;opacity:.85}
.mnav{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:10px 0}
.mnav b{font-size:17px;color:var(--teal)}
.files{font-size:13px;font-weight:700;color:var(--ink-soft);max-height:220px;overflow:auto;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:8px 10px;margin-top:8px;direction:ltr;text-align:left}
.files div{padding:2px 0;border-bottom:1px dashed #eee}
.prog{height:8px;border-radius:8px;background:#eadfc8;overflow:hidden;margin-top:8px}
.prog i{display:block;height:100%;width:0;background:var(--green);transition:width .2s}
.tedit{display:grid;grid-template-columns:70px 1fr;gap:8px}

@media (max-width:560px){
  .plans{grid-template-columns:1fr}
  .big-actions{grid-template-columns:1fr}
  .topbar .logo{font-size:15px}
  .topbar .hi{display:none}
  .tb-btn{padding:0 9px;font-size:12.5px}
}

/* ===== Watermark (© English with Nader) ===== */
.card,.topic,.plan{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='230' height='130'%3E%3Ctext x='8' y='78' transform='rotate(-18 115 65)' font-family='Arial' font-size='14' font-weight='700' fill='%230f3b40' fill-opacity='0.09'%3E%C2%A9 English with Nader%3C/text%3E%3C/svg%3E")}
.plan.best,.banner.ok,.creds{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='230' height='130'%3E%3Ctext x='8' y='78' transform='rotate(-18 115 65)' font-family='Arial' font-size='14' font-weight='700' fill='%23ffffff' fill-opacity='0.08'%3E%C2%A9 English with Nader%3C/text%3E%3C/svg%3E"),linear-gradient(165deg,#16434a,#0d2b30)}
.banner.ok,.creds{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='230' height='130'%3E%3Ctext x='8' y='78' transform='rotate(-18 115 65)' font-family='Arial' font-size='14' font-weight='700' fill='%23ffffff' fill-opacity='0.08'%3E%C2%A9 English with Nader%3C/text%3E%3C/svg%3E")}
.topic::after{content:"© English with Nader";position:absolute;right:12px;bottom:8px;font-size:10.5px;font-weight:800;color:var(--teal);opacity:.35;pointer-events:none}
.topic .st{position:relative;z-index:1}
#app{position:relative}