@font-face{font-family:IRANSansDN;src:local('IRANSansDN'),local('IRANSans'),local('IranSans');font-display:swap}
:root{--bg:#f4f7fb;--card:#fff;--card2:#f8faff;--text:#162033;--muted:#6c7890;--line:#e3e8f1;--primary:#6252e7;--primary2:#4b3bc8;--success:#168653;--danger:#d84a5c;--shadow:0 18px 50px rgba(38,51,83,.09)}html[data-theme="dark"]{--bg:#0d1420;--card:#151d2b;--card2:#101827;--text:#eef3fb;--muted:#9aa9bf;--line:#273349;--primary:#8579f0;--primary2:#9b92f6;--success:#3bc47c;--danger:#f06678;--shadow:0 18px 50px rgba(0,0,0,.24)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:IRANSansDN,Tahoma,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text)}button,input,select{font:inherit}.btn{border:0;border-radius:12px;padding:11px 17px;font-weight:800;cursor:pointer;transition:.18s}.btn.primary{background:var(--primary);color:white}.btn.primary:hover{background:var(--primary2);transform:translateY(-1px)}.btn.ghost{background:var(--card);color:var(--text);border:1px solid var(--line)}.btn.success{background:var(--success);color:#fff}.btn:disabled{opacity:.42;cursor:not-allowed;transform:none}.theme-btn{width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--text);display:grid;place-items:center;cursor:pointer}.theme-btn svg{width:19px;height:19px}.welcome{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 80% 10%,#8175ef22,transparent 30%),var(--bg)}.welcome-card{width:min(480px,100%);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:26px;padding:32px;text-align:center}.welcome-logo{width:72px;height:72px;border-radius:22px;background:linear-gradient(135deg,#8175f0,#5140c9);color:#fff;display:grid;place-items:center;font-weight:950;font-size:22px;margin:0 auto 20px}.welcome h1{margin:0 0 10px}.welcome p{color:var(--muted);line-height:1.9;font-size:13px}.welcome input,.welcome select{width:100%;margin-top:10px;border:1px solid var(--line);background:var(--card2);color:var(--text);border-radius:12px;padding:12px}.welcome .btn{width:100%;margin-top:14px}.shell{width:min(1180px,calc(100% - 28px));margin:auto;padding:22px 0 10px}.student-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:13px}.hero{background:linear-gradient(135deg,#5b4bd8,#7f70ef);color:#fff;border-radius:22px;padding:24px 27px;display:flex;align-items:center;justify-content:space-between;gap:20px;box-shadow:0 18px 40px #5b4bd82b}.hero h1{margin:0 0 7px}.hero p{margin:0;opacity:.9;font-size:12px;line-height:1.9}.profile{display:flex;align-items:center;gap:11px;background:#ffffff15;border:1px solid #ffffff22;padding:9px 12px;border-radius:15px}.profile small{display:block;opacity:.78;margin-top:3px}.avatar{width:42px;height:42px;border-radius:13px;background:#fff;color:#5645d2;display:grid;place-items:center;font-weight:900}.toolbar{display:grid;grid-template-columns:1fr auto;gap:12px;margin:14px 0}.progress-card,.os-select{background:var(--card);border:1px solid var(--line);border-radius:15px;padding:13px 15px}.progress-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px}.progressbar{height:9px;background:var(--card2);border-radius:99px;overflow:hidden}.progressbar i{display:block;height:100%;background:linear-gradient(90deg,#6c5ce7,#8f83f1);border-radius:99px}.progress-card span,.os-select{color:var(--muted);font-size:11px}.os-select{display:flex;align-items:center;gap:8px}.os-select select{border:0;background:transparent;color:var(--text);outline:none}.modules{display:grid;gap:14px}.module{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}.module-head{padding:17px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.module-title{display:flex;gap:12px;align-items:center}.module-icon{width:44px;height:44px;border-radius:13px;background:#f0edff;display:grid;place-items:center;font-size:20px}.module h2{margin:0 0 4px;font-size:15px}.module p{margin:0;color:var(--muted);font-size:11px}.status{font-size:10px;border-radius:999px;padding:5px 9px;background:var(--card2);color:var(--muted);border:1px solid var(--line)}.status.done{background:#e3f7eb;color:#157646}.lesson-list{display:grid}.lesson-row{padding:13px 18px;display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:11px;border-bottom:1px solid var(--line);cursor:pointer;transition:.15s}.lesson-row:hover{background:var(--card2)}.lesson-row.locked{opacity:.55;cursor:not-allowed}.lesson-num{width:38px;height:38px;border-radius:11px;background:#f0edff;color:#5c4bd3;display:grid;place-items:center;font-weight:900;font-size:11px}.lesson-row strong{font-size:12.5px}.lesson-row small{display:block;color:var(--muted);margin-top:4px;font-size:10px}.exam-btn{width:100%;border:0;background:var(--card2);color:var(--text);padding:13px;cursor:pointer;font-weight:800}.history{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;margin-top:14px}.history h3{margin-top:0}.history-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;padding:9px 0;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.history-row strong{color:var(--text)}.footer{padding:20px 0;text-align:center;color:var(--muted);font-size:10.5px}.page{width:min(1120px,calc(100% - 24px));margin:auto;padding:18px 0}.lesson-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;color:var(--muted);font-size:11px}.back{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:10px;padding:8px 11px;cursor:pointer}.slide-shell{min-height:calc(100vh - 115px);display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}.slide-progress{display:flex;align-items:center;gap:7px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--card2)}.slide-progress .dot{height:5px;flex:1;border-radius:99px;background:var(--line)}.slide-progress .dot.active,.slide-progress .dot.done{background:var(--primary)}.slide-progress .counter{font-size:10px;color:var(--muted);white-space:nowrap;margin-right:5px}.slide-stage{flex:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);align-items:center;gap:34px;padding:34px 42px;animation:slideIn .25s ease}.slide-stage.no-image{grid-template-columns:1fr;max-width:900px;margin:auto}.slide-copy .eyebrow{display:inline-flex;background:#efedff;color:#5d4bd3;border-radius:999px;padding:5px 9px;font-size:10px;font-weight:850;margin-bottom:12px}.slide-copy h1{font-size:clamp(27px,4vw,46px);margin:0 0 15px;line-height:1.45;letter-spacing:-.7px}.slide-copy h2{font-size:clamp(23px,3vw,36px);margin:0 0 15px;line-height:1.5}.slide-copy p,.slide-copy .slide-text{font-size:clamp(14px,1.6vw,18px);line-height:2.15;color:var(--muted);white-space:pre-line}.slide-visual{border-radius:20px;overflow:hidden;background:var(--card2);border:1px solid var(--line);min-height:300px;display:grid;place-items:center}.slide-visual img{width:100%;height:100%;max-height:470px;object-fit:contain;display:block}.slide-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-top:1px solid var(--line);background:var(--card2)}.slide-nav .center-hint{font-size:10px;color:var(--muted);text-align:center}.media-stage{display:grid;gap:18px}.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.action-card{border:1px solid var(--line);background:var(--card2);border-radius:16px;padding:18px}.action-card strong{font-size:15px}.action-card p{color:var(--muted);font-size:11px;line-height:1.9}.media-list{display:grid;gap:12px}.media-list video,.media-list img{width:100%;max-height:500px;object-fit:contain;border-radius:16px;background:#05070a}.quiz-stage{display:grid;gap:12px;width:min(860px,100%);margin:auto}.quiz-stage h2{margin:0}.question{border:1px solid var(--line);border-radius:15px;padding:15px;background:var(--card2)}.question h4{margin:0 0 11px;line-height:1.9}.option{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--card);border-radius:11px;padding:10px 12px;margin:7px 0;cursor:pointer}.option input{accent-color:var(--primary)}.answer-review{margin-top:9px;padding:10px;border-radius:10px;font-size:11px;line-height:1.9}.answer-review.ok{background:#e6f8ed;color:#167647}.answer-review.bad{background:#fff0f2;color:#9e3243}.score-box{margin-top:12px;border-radius:14px;padding:15px;background:#f0edff;color:#4f40bc;line-height:1.8}.empty-os{padding:28px;text-align:center;color:var(--muted)}.modal{position:fixed;inset:0;z-index:100;background:#0e1521cc;display:grid;place-items:center;padding:2vw}.modalbox{width:min(1300px,96vw);height:min(850px,94vh);background:var(--card);border-radius:18px;display:flex;flex-direction:column;overflow:hidden}.modalhead{display:flex;justify-content:space-between;align-items:center;padding:11px 14px;border-bottom:1px solid var(--line)}.modalhead button{width:36px;height:36px;border:0;border-radius:9px;background:var(--card2);color:var(--text);font-size:20px;cursor:pointer}.modalbox iframe{border:0;width:100%;flex:1;background:#000}@keyframes slideIn{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:none}}
@media(max-width:800px){.shell{width:min(100% - 18px,1180px);padding-top:10px}.hero{padding:18px;align-items:flex-start}.hero p{max-width:520px}.toolbar{grid-template-columns:1fr}.os-select{justify-content:space-between}.slide-shell{min-height:calc(100vh - 85px)}.slide-stage{grid-template-columns:1fr;padding:24px 20px;gap:20px}.slide-visual{min-height:210px;order:-1}.action-grid{grid-template-columns:1fr}.lesson-top{padding:0 3px}.history-row{grid-template-columns:1fr auto}.history-row span:last-child{grid-column:1/-1}.slide-copy h1{font-size:30px}}
@media(max-width:520px){.hero{display:grid}.profile{width:max-content}.lesson-row{grid-template-columns:38px 1fr}.lesson-row>.status{grid-column:2;width:max-content}.module-head{align-items:flex-start}.slide-stage{padding:18px 15px}.slide-nav{padding:11px}.slide-nav .center-hint{display:none}.progress-card{grid-template-columns:auto 1fr}.progress-card span{grid-column:1/-1}.student-top{margin-bottom:8px}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px}.btn svg{flex:0 0 auto}
.authored-slide-stage{flex:1;display:grid;place-items:center;padding:26px 32px;background:linear-gradient(145deg,var(--card),var(--card2));animation:slideIn .25s ease}.authored-slide-stage .cz-slide-host{width:min(100%,1080px)}.authored-slide-stage .cz-slide-canvas{box-shadow:0 18px 55px rgba(30,45,75,.12)}
@media(max-width:800px){.authored-slide-stage{padding:16px 12px}.authored-slide-stage .cz-slide-host{width:100%}}