:root{--bg:#ecebf5;--card:#fff;--ink:#1c1b2e;--mut:#8a8aa3;--line:rgba(28,27,46,.08);--b1:#7c4dff;--b2:#4f8cff;--gold:#f5a300;--ok:#19b27a;--shadow:0 10px 30px -12px rgba(76,60,160,.28);--tab:rgba(255,255,255,.86);color-scheme:light}
@media(prefers-color-scheme:dark){:root:not([data-t=light]){--bg:#0b1020;--card:#151b33;--ink:#f1f1fb;--mut:#9aa0c3;--line:rgba(255,255,255,.09);--shadow:0 10px 30px -12px rgba(0,0,0,.6);--tab:rgba(21,27,51,.86);color-scheme:dark}}
:root[data-t=dark]{--bg:#0b1020;--card:#151b33;--ink:#f1f1fb;--mut:#9aa0c3;--line:rgba(255,255,255,.09);--shadow:0 10px 30px -12px rgba(0,0,0,.6);--tab:rgba(21,27,51,.86);color-scheme:dark}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:"Anjoman","Vazirmatn","Noto Sans Arabic","Segoe UI",Tahoma,system-ui,sans-serif;font-size:15px;line-height:1.7}
body{min-height:100vh}
#app{max-width:520px;margin:0 auto;min-height:100vh;position:relative;padding:calc(env(safe-area-inset-top) + 16px) 16px calc(96px + env(safe-area-inset-bottom))}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit;color:inherit}
.hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.hi small{display:block;color:var(--mut);font-size:12.5px}.hi b{font-size:20px;font-weight:800}
.av{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--b1),var(--b2));color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:var(--shadow)}
h2{font-size:17px;margin:24px 2px 12px;font-weight:800;display:flex;justify-content:space-between;align-items:center}
h2 span{font-size:12.5px;color:var(--mut);font-weight:500}
.card{background:var(--card);border-radius:26px;box-shadow:var(--shadow);overflow:hidden}
/* hero: continue */
.hero{position:relative;display:block;width:100%;text-align:right;color:#fff;min-height:200px;border-radius:30px;overflow:hidden;box-shadow:0 22px 40px -16px rgba(79,60,200,.6);background:#222}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,40,.05) 25%,rgba(10,10,40,.88))}
.hero .in{position:absolute;inset:auto 0 0 0;padding:18px;z-index:2}
.hero .k{display:inline-block;background:rgba(255,255,255,.22);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);padding:2px 12px;border-radius:99px;font-size:12px;margin-bottom:6px}
.hero b{display:block;font-size:19px;line-height:1.5;margin-bottom:2px}
.hero small{opacity:.85}
.pbar{height:6px;border-radius:9px;background:rgba(255,255,255,.28);margin-top:12px;overflow:hidden}.pbar i{display:block;height:100%;border-radius:9px;background:linear-gradient(90deg,#ffd54a,#ff8a3d)}
.play{position:absolute;left:16px;top:16px;z-index:3;width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.9);display:grid;place-items:center;box-shadow:0 10px 24px rgba(0,0,0,.3)}
.play svg{width:20px;height:20px;fill:#5b3bd6;margin-right:-2px}
/* course cards */
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cc{text-align:right;display:block;width:100%;padding:8px;border-radius:26px;background:var(--card);box-shadow:var(--shadow);animation:up .6s cubic-bezier(.2,.8,.2,1) backwards}
.cc .im{position:relative;aspect-ratio:1/1.08;border-radius:19px;overflow:hidden;background:linear-gradient(135deg,var(--b1),var(--b2))}
.cc img{width:100%;height:100%;object-fit:cover;display:block}
.cc .tg{position:absolute;top:8px;right:8px;background:linear-gradient(135deg,#ffd54a,#f5a300);color:#4a2b00;font-size:11px;font-weight:800;padding:1px 10px;border-radius:99px}
.cc b{display:block;margin:9px 4px 0;font-size:13.5px;line-height:1.55;min-height:42px}
.cc .pb{height:5px;background:var(--line);border-radius:9px;margin:8px 4px 4px;overflow:hidden}.cc .pb i{display:block;height:100%;background:linear-gradient(90deg,var(--b1),var(--b2));border-radius:9px}
.cc small{display:block;margin:0 4px 4px;color:var(--mut);font-size:11.5px}
@keyframes up{from{opacity:0;transform:translateY(20px) scale(.94)}}
/* course page */
.top{position:relative;margin:-16px -16px 0;height:280px;overflow:hidden;border-radius:0 0 34px 34px;background:linear-gradient(135deg,var(--b1),var(--b2))}
.top img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.top:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.35),rgba(10,10,40,.1) 40%,rgba(10,10,40,.75))}
.back{position:absolute;z-index:3;top:calc(env(safe-area-inset-top) + 14px);right:14px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.88);display:grid;place-items:center;color:#222}
.back svg{width:20px;height:20px;stroke:#222;fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.sheet{position:relative;margin-top:-54px;z-index:3;padding:20px;border-radius:30px}
.sheet h1{font-size:20px;margin:0 0 6px;line-height:1.5}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.chips span{background:rgba(124,77,255,.12);color:var(--b1);padding:2px 12px;border-radius:99px;font-size:12px;font-weight:700}
@media(prefers-color-scheme:dark){.chips span{color:#b7a3ff}}
.sheet p{color:var(--mut);margin:6px 0 14px;font-size:13.5px}
.cta{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px;border-radius:20px;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--b1),var(--b2));box-shadow:0 14px 24px -10px rgba(95,70,230,.7)}
.sec{margin:22px 4px 8px;color:var(--mut);font-weight:800;font-size:13px}
.ss{display:flex;align-items:center;gap:12px;width:100%;text-align:right;padding:12px;margin-bottom:10px;background:var(--card);border-radius:20px;box-shadow:var(--shadow)}
.ss .n{flex:none;width:40px;height:40px;border-radius:14px;display:grid;place-items:center;font-weight:800;background:rgba(124,77,255,.12);color:var(--b1)}
.ss.done .n{background:rgba(25,178,122,.14);color:var(--ok)}
.ss div{flex:1;min-width:0}.ss b{display:block;font-size:14px;line-height:1.5}.ss small{color:var(--mut);font-size:12px}
.ss svg{flex:none;width:22px;height:22px;fill:var(--b1);opacity:.9}
.empty{text-align:center;color:var(--mut);padding:30px 10px}
/* player */
.pl{position:fixed;inset:0;z-index:50;background:var(--bg);overflow:auto;padding-bottom:30px;animation:fade .25s}
@keyframes fade{from{opacity:0}}
.pl .vw{position:sticky;top:0;background:#000;z-index:2}
.pl video{display:block;width:100%;max-height:56vh;background:#000}
.pl .bk{position:absolute;z-index:3;top:calc(env(safe-area-inset-top) + 10px);right:10px;width:38px;height:38px;border-radius:50%;background:rgba(0,0,0,.5);display:grid;place-items:center}
.pl .bk svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.pl .bd{max-width:520px;margin:0 auto;padding:16px}
.pl h3{margin:0 0 4px;font-size:17px;line-height:1.6}.pl .sub{color:var(--mut);font-size:12.5px}
.spd{display:flex;gap:8px;margin:14px 0}.spd button{flex:1;padding:8px 0;border-radius:14px;background:var(--card);box-shadow:var(--shadow);font-weight:700;font-size:13px}.spd button.on{background:linear-gradient(135deg,var(--b1),var(--b2));color:#fff}
.nav2{display:flex;gap:10px}.nav2 button{flex:1;padding:12px;border-radius:18px;background:var(--card);box-shadow:var(--shadow);font-weight:700}.nav2 button[disabled]{opacity:.4}
.err{background:rgba(255,80,100,.12);color:#e0405a;padding:10px 12px;border-radius:14px;margin-top:12px;font-size:13px}
/* tab bar */
.tb{position:fixed;z-index:20;left:50%;transform:translateX(-50%);bottom:calc(10px + env(safe-area-inset-bottom));width:min(488px,calc(100% - 24px));display:flex;padding:8px;border-radius:28px;background:var(--tab);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 18px 40px -14px rgba(60,40,160,.45);border:1px solid var(--line)}
.tb button{flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;padding:6px 0;border-radius:20px;color:var(--mut);font-size:11.5px;font-weight:700;transition:.25s}
.tb button svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tb button.on{color:#fff;background:linear-gradient(135deg,var(--b1),var(--b2));box-shadow:0 10px 18px -8px rgba(95,70,230,.8)}
/* login */
.lg{min-height:calc(100vh - 40px);display:flex;flex-direction:column;justify-content:center;gap:18px;text-align:center}
.lg .logo{width:92px;height:92px;margin:0 auto;border-radius:30px;background:linear-gradient(135deg,var(--b1),var(--b2));display:grid;place-items:center;box-shadow:0 24px 40px -16px rgba(95,70,230,.8)}
.lg .logo svg{width:50px;height:50px;fill:#fff}
.lg h1{margin:6px 0 0;font-size:24px}.lg p{margin:0;color:var(--mut)}
.fld{padding:16px 18px;border-radius:22px;background:var(--card);box-shadow:var(--shadow);width:100%;border:2px solid transparent;text-align:center;font-size:20px;letter-spacing:2px;direction:ltr;outline:0;transition:.2s}
.fld:focus{border-color:var(--b1)}
.fld::placeholder{letter-spacing:0;color:var(--mut);font-size:15px;direction:rtl}
.lg .cta[disabled]{opacity:.6}
.lg a,.lnk{color:var(--b1);font-weight:700;background:none}
.msg{color:#e0405a;font-size:13px;min-height:20px}
/* profile */
.pr{padding:20px;text-align:center}.pr .av{width:80px;height:80px;margin:0 auto 10px;font-size:30px}
.li{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;border-top:1px solid var(--line)}
.sw{display:flex;gap:6px}.sw button{padding:4px 12px;border-radius:99px;background:var(--line);font-size:12.5px}.sw button.on{background:var(--b1);color:#fff}
.out{margin-top:16px;width:100%;padding:13px;border-radius:20px;background:rgba(255,80,100,.12);color:#e0405a;font-weight:800}