:root{
  --bg:#120E09;--bg2:#19130d;--panel:#211A12;--panel2:#2A2117;--ink:#F6EFE3;
  --muted:#BBAE9B;--muted2:#8A7D6B;--gold:#EFCB79;--gold2:#C4922C;
  --goldsoft:rgba(228,180,90,.13);--cyan:#5FC7BE;--red:#D5613F;--line:rgba(232,196,120,.13);--line2:rgba(232,196,120,.25);
  --display:"Archivo",system-ui,sans-serif;--body:"Inter",system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input{font:inherit}.hidden{display:none!important}
.app-shell{min-height:100vh;background:radial-gradient(900px 480px at 85% -5%,rgba(228,180,90,.12),transparent 60%),var(--bg)}
.topbar{height:68px;position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid var(--line);background:rgba(18,14,9,.88);backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--display);font-weight:800}.brand img{height:34px;width:auto}.brand-copy{display:flex;flex-direction:column;line-height:1.05}.brand-copy small{font:10px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted2);margin-top:5px}
.top-actions{display:flex;align-items:center;gap:10px}.user-chip{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:999px;padding:7px 12px;color:var(--muted);font-size:13px}.avatar{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--goldsoft);color:var(--gold);font-weight:800;font-size:12px}
.btn{border:0;border-radius:999px;padding:11px 17px;cursor:pointer;font-family:var(--display);font-weight:700;transition:.18s}.btn:hover{transform:translateY(-1px)}.btn-primary{background:linear-gradient(118deg,var(--gold),var(--gold2));color:#241806;box-shadow:0 10px 28px -14px rgba(228,180,90,.7)}.btn-ghost{background:transparent;border:1px solid var(--line2);color:var(--ink)}.btn-danger{background:rgba(213,97,63,.12);border:1px solid rgba(213,97,63,.35);color:#f0a087}.btn-sm{padding:8px 12px;font-size:13px}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.course-layout{display:grid;grid-template-columns:340px minmax(0,1fr);min-height:calc(100vh - 68px)}
.sidebar{border-right:1px solid var(--line);background:var(--bg2);padding:24px 16px 40px;position:sticky;top:68px;height:calc(100vh - 68px);overflow:auto}.side-title{padding:0 8px 18px}.eyebrow{font:11px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}.side-title h1{font:800 25px/1.1 var(--display);margin:8px 0 6px}.side-title p{color:var(--muted2);font-size:13px;margin:0}.progress-wrap{margin:14px 8px 24px}.progress-row{display:flex;justify-content:space-between;font:11px var(--mono);color:var(--muted2);margin-bottom:7px}.progress-bar{height:6px;border-radius:99px;background:#0d0a07;overflow:hidden;border:1px solid var(--line)}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--gold2),var(--gold));transition:width .25s}
.module-nav{border:1px solid transparent;border-radius:13px;margin-bottom:9px;overflow:hidden}.module-nav.open{border-color:var(--line);background:rgba(255,255,255,.015)}.module-head{width:100%;display:flex;align-items:center;gap:10px;background:transparent;border:0;color:var(--ink);padding:13px 11px;text-align:left;cursor:pointer}.module-number{font:700 11px var(--mono);color:var(--gold);min-width:42px}.module-name{font:700 14px/1.25 var(--display);flex:1}.module-chev{color:var(--muted2);font-size:12px;transition:.18s}.module-nav.open .module-chev{transform:rotate(90deg)}.lesson-list{display:none;padding:0 7px 8px}.module-nav.open .lesson-list{display:block}.lesson-btn{width:100%;display:flex;align-items:flex-start;gap:10px;border:0;background:transparent;color:var(--muted);padding:10px 9px;border-radius:9px;text-align:left;cursor:pointer;font-size:13px}.lesson-btn:hover,.lesson-btn.active{background:var(--goldsoft);color:var(--ink)}.lesson-status{width:18px;height:18px;border:1px solid var(--line2);border-radius:50%;display:grid;place-items:center;flex:0 0 auto;margin-top:1px;font-size:10px;color:transparent}.lesson-btn.completed .lesson-status{background:var(--cyan);border-color:var(--cyan);color:#092b28}.lesson-index{font:10px var(--mono);color:var(--muted2);display:block;margin-bottom:3px}
.main{padding:34px 36px 70px;min-width:0}.lesson-wrap{max-width:980px;margin:0 auto}.breadcrumb{font:11px var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--gold);margin-bottom:14px}.lesson-title{font:900 clamp(32px,5vw,56px)/1.02 var(--display);letter-spacing:-.035em;margin:0 0 22px}.video-wrap{aspect-ratio:16/9;border:1px solid var(--line2);border-radius:20px;overflow:hidden;background:#080605;box-shadow:0 35px 70px -45px #000;margin-bottom:28px}.video-wrap iframe{display:block;width:100%;height:100%;border:0}
.block{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:24px;margin:16px 0}.block h2,.block h3{font-family:var(--display);line-height:1.2;margin:0 0 13px}.block h2{font-size:22px}.block p{color:var(--muted);margin:8px 0}.lead-block{font-size:19px;color:var(--ink);background:linear-gradient(145deg,var(--panel2),var(--panel))}.lead-block p{color:var(--ink)}
.cards-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.mini-card{padding:17px;border-radius:12px;border:1px solid var(--line);background:rgba(0,0,0,.13)}.mini-card b{font:700 15px var(--display);display:block;margin-bottom:6px}.mini-card span{font-size:14px;color:var(--muted)}
.prompt-card{background:#0b0907;border-color:var(--line2);position:relative}.prompt-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:14px}.prompt-head h3{margin:0}.copy-btn{border:1px solid var(--line2);background:transparent;color:var(--gold);border-radius:8px;padding:7px 10px;cursor:pointer;font:11px var(--mono)}pre.prompt{white-space:pre-wrap;word-break:break-word;margin:0;color:#e8ded0;font:13px/1.7 var(--mono)}
.steps{counter-reset:steps;list-style:none;padding:0;margin:0}.steps li{counter-increment:steps;display:flex;gap:12px;padding:11px 0;border-top:1px solid var(--line);color:var(--muted)}.steps li:first-child{border-top:0}.steps li:before{content:counter(steps);width:28px;height:28px;border-radius:8px;display:grid;place-items:center;flex:0 0 auto;background:var(--goldsoft);color:var(--gold);font:700 12px var(--mono)}.bullet-list{margin:0;padding-left:20px;color:var(--muted)}.bullet-list li{margin:8px 0}
.callout{border-left:3px solid var(--gold);background:var(--goldsoft);padding:17px 19px;border-radius:0 12px 12px 0;color:var(--ink)}.callout.cyan{border-left-color:var(--cyan);background:rgba(95,199,190,.08)}
.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.gallery-item{overflow:hidden;border:1px solid var(--line);border-radius:13px;background:#0c0907;cursor:pointer}.gallery-item img{width:100%;height:260px;object-fit:cover;display:block}.gallery-item span{display:block;padding:10px 12px;color:var(--muted);font-size:12px}
.resource-list{display:grid;gap:10px}.resource{display:flex;align-items:center;gap:13px;padding:13px;border:1px solid var(--line);border-radius:12px;background:rgba(0,0,0,.1)}.resource-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--goldsoft);color:var(--gold);font-weight:800}.resource-main{flex:1;min-width:0}.resource-main b{font:700 14px var(--display);display:block}.resource-main span{font:10px var(--mono);color:var(--muted2)}.resource-actions{display:flex;gap:7px}.resource-actions a{font:11px var(--mono);padding:7px 9px;border:1px solid var(--line2);border-radius:8px;color:var(--gold)}
.lesson-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}.complete-btn.done{background:rgba(95,199,190,.13);color:var(--cyan);border:1px solid rgba(95,199,190,.3)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.88);display:none;align-items:center;justify-content:center;padding:28px}.lightbox.open{display:flex}.lightbox img{max-width:min(1200px,94vw);max-height:90vh;border-radius:12px}.lightbox button{position:absolute;right:24px;top:20px;background:#fff;color:#111;border:0;border-radius:50%;width:38px;height:38px;font-size:22px;cursor:pointer}

.auth-page{min-height:100vh;display:grid;place-items:center;padding:28px;background:radial-gradient(800px 450px at 75% 0,rgba(228,180,90,.16),transparent 60%),var(--bg)}.auth-card{width:min(460px,100%);background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line2);border-radius:24px;padding:34px;box-shadow:0 50px 90px -45px #000}.auth-brand{display:flex;justify-content:center;margin-bottom:24px}.auth-brand img{height:44px}.auth-card h1{font:900 34px/1.05 var(--display);text-align:center;margin:0 0 9px}.auth-card>p{text-align:center;color:var(--muted);margin:0 0 25px}.form-group{margin:14px 0}.form-group label{display:block;font:11px var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--muted2);margin-bottom:7px}.input{width:100%;border:1px solid var(--line2);border-radius:11px;background:#0e0a07;color:var(--ink);padding:13px 14px;outline:none}.input:focus{border-color:var(--gold)}.auth-card .btn{width:100%;justify-content:center;margin-top:8px}.form-error{color:#f0a087;background:rgba(213,97,63,.1);border:1px solid rgba(213,97,63,.25);padding:10px 12px;border-radius:9px;margin:12px 0;font-size:13px}.back-home{display:block;text-align:center;margin-top:18px;color:var(--muted2);font-size:13px}

.admin-main{max-width:1100px;margin:0 auto;padding:36px 24px 70px}.admin-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:24px}.admin-head h1{font:900 42px/1 var(--display);margin:6px 0 0}.admin-grid{display:grid;grid-template-columns:340px 1fr;gap:18px}.admin-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px}.admin-card h2{font:800 20px var(--display);margin:0 0 16px}.student-table{width:100%;border-collapse:collapse}.student-table th,.student-table td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:middle}.student-table th{font:10px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted2)}.student-table td{font-size:13px}.status-pill{display:inline-block;border-radius:999px;padding:4px 8px;font:10px var(--mono)}.status-pill.active{background:rgba(95,199,190,.12);color:var(--cyan)}.status-pill.inactive{background:rgba(213,97,63,.12);color:#e58d74}.admin-actions{display:flex;flex-wrap:wrap;gap:6px}.small-note{font-size:12px;color:var(--muted2)}
.toast{position:fixed;right:20px;bottom:20px;z-index:150;background:#f6efe3;color:#1d140a;border-radius:10px;padding:11px 14px;box-shadow:0 14px 40px rgba(0,0,0,.25);font-size:13px;transform:translateY(20px);opacity:0;pointer-events:none;transition:.2s}.toast.show{transform:none;opacity:1}

@media(max-width:920px){.course-layout{grid-template-columns:1fr}.sidebar{position:relative;top:0;height:auto;border-right:0;border-bottom:1px solid var(--line);max-height:none}.module-nav:not(.open) .lesson-list{display:none}.main{padding:28px 20px 60px}.admin-grid{grid-template-columns:1fr}.topbar{padding:0 14px}.user-chip span{display:none}}
@media(max-width:620px){.top-actions .btn-ghost{display:none}.cards-grid,.gallery{grid-template-columns:1fr}.gallery-item img{height:auto}.lesson-title{font-size:36px}.block{padding:18px}.lesson-footer{flex-wrap:wrap}.lesson-footer .btn{flex:1}.resource{align-items:flex-start;flex-wrap:wrap}.resource-actions{width:100%;padding-left:53px}.admin-main{padding:26px 14px}.student-table{display:block;overflow-x:auto}.admin-head{align-items:flex-start;flex-direction:column}.brand-copy{display:none}}