html{scroll-behavior:smooth;}
body{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;}
a{color:inherit;text-decoration:none;}
/* NAV */
nav{display:flex;align-items:center;justify-content:space-between;padding:.75rem 2rem;background:rgba(2,6,23,.95);border-bottom:1px solid var(--border);backdrop-filter:blur(14px);position:sticky;top:0;z-index:1200;}
.logo{display:flex;align-items:center;gap:.35rem;}
.logo-entra{font-weight:800;font-size:1.25rem;color:#e2e8f0;}
.logo-fx{font-weight:900;font-size:1.25rem;background:linear-gradient(135deg,#22c55e,#15803d);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.nav-links{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:1.5rem;font-size:.9rem;z-index:1201;}
.nav-cta{position:relative;z-index:1202;}
.nav-links a{color:var(--muted);transition:color .15s;}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--accent);}
.nav-dropdown{position:relative;}
.nav-dropdown>a::after{content:' ▾';font-size:.7rem;opacity:.7;}
.dropdown-menu{
display:none;position:absolute;top:calc(100% + .6rem);left:50%;
transform:translateX(-50%);
background:#0f172a;border:1px solid #1e293b;
border-radius:10px;padding:.4rem;min-width:190px;
box-shadow:0 16px 40px rgba(0,0,0,.6);z-index:200;
}
.nav-dropdown:hover .dropdown-menu{display:flex;flex-direction:column;gap:.1rem;}
.dropdown-menu a{
padding:.5rem .85rem;border-radius:6px;
font-size:.85rem;color:#94a3b8;transition:all .15s;
display:flex;align-items:center;gap:.5rem;
}
.dropdown-menu a:hover{background:rgba(34,197,94,.1);color:#22c55e;}
.btn{border-radius:999px;border:1px solid transparent;padding:.4rem 1.1rem;font-size:.88rem;cursor:pointer;transition:all .18s;font-weight:600;}
.btn-outline{border-color:var(--border);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);}
.btn-primary{background:linear-gradient(135deg,#22c55e,#15803d);color:#fff;border-color:var(--accent);box-shadow:0 0 16px var(--accent-glow);}
.btn-primary:hover{box-shadow:0 0 28px var(--accent-glow);transform:translateY(-1px);}
.btn-lg{padding:.65rem 1.75rem;font-size:1rem;}
/* PAGE HEADER */
.page-hero{padding:5rem 2rem 4rem;text-align:center;background:radial-gradient(ellipse 80% 50% at 50% 0%,rgba(34,197,94,.08),transparent 70%),var(--bg);}
.page-hero .label{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:.75rem;}
.page-hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:900;letter-spacing:-.02em;line-height:1.1;margin-bottom:1rem;}
.page-hero p{font-size:1.05rem;color:var(--muted);max-width:520px;margin:0 auto;}
/* TABS */
.tabs{display:flex;gap:.5rem;justify-content:center;padding:2rem 2rem 0;border-bottom:1px solid var(--border);background:var(--bg);}
.tab{font-size:.92rem;font-weight:600;padding:.6rem 1.5rem;border-bottom:2px solid transparent;cursor:pointer;color:var(--muted);transition:color .15s,border-color .15s;}
.tab:hover{color:var(--text);}
.tab.active{color:var(--accent);border-bottom-color:var(--accent);}
/* CONTENT */
section{padding:4rem 2rem;}
.section-inner{max-width:1160px;margin:0 auto;}
.section-label{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:.75rem;}
.section-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900;letter-spacing:-.02em;margin-bottom:1rem;}
.section-sub{font-size:1rem;color:var(--muted);max-width:560px;margin-bottom:3rem;}
/* COURSE GRID */
.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.5rem;}
.course-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color .2s,transform .2s,box-shadow .2s;}
.course-card:hover{border-color:rgba(34,197,94,.4);transform:translateY(-4px);box-shadow:var(--shadow);}
.course-thumb{height:180px;display:flex;align-items:center;justify-content:center;font-size:4rem;background:linear-gradient(135deg,#0f172a,#1e293b);border-bottom:1px solid var(--border);position:relative;}
.soon-overlay{position:absolute;inset:0;background:rgba(2,6,23,.7);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;}
.course-body{padding:1.75rem;}
.course-meta{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.75rem;}
.pill{font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:.2rem .65rem;border-radius:999px;}
.pill-green{background:var(--accent-soft);color:var(--accent);}
.pill-blue{background:var(--blue-soft);color:var(--blue);}
.pill-orange{background:rgba(251,146,60,.12);color:#fb923c;}
.pill-purple{background:rgba(168,85,247,.12);color:#c084fc;}
.pill-gold{background:rgba(234,179,8,.12);color:#eab308;}
.pill-soon{background:rgba(100,116,139,.15);color:#94a3b8;border:1px solid rgba(100,116,139,.3);}
.course-card h3{font-size:1.1rem;font-weight:700;margin-bottom:.5rem;}
.course-card p{font-size:.88rem;color:var(--muted);margin-bottom:1.25rem;}
.course-features{list-style:none;margin-bottom:1.5rem;}
.course-features li{font-size:.85rem;color:var(--muted);padding:.3rem 0;border-bottom:1px solid rgba(30,41,59,.5);display:flex;align-items:center;gap:.4rem;}
.course-features li:last-child{border-bottom:none;}
.course-features li::before{content:"✓";color:var(--accent);font-weight:700;}
.course-footer{display:flex;align-items:center;justify-content:space-between;padding-top:1rem;border-top:1px solid var(--border);}
.price{font-size:1.35rem;font-weight:900;color:var(--accent);}
/* BOOKS */
.books-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem;}
.book-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem;transition:border-color .2s,box-shadow .2s,transform .2s;}
.book-card:hover{border-color:rgba(34,197,94,.35);transform:translateY(-3px);box-shadow:var(--shadow);}
.book-cover{width:70px;height:90px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:2rem;margin-bottom:1.25rem;background:linear-gradient(135deg,rgba(34,197,94,.2),rgba(21,128,61,.1));border:1px solid rgba(34,197,94,.2);}
.book-card h3{font-size:1rem;font-weight:700;margin-bottom:.35rem;}
.book-card .author{font-size:.8rem;color:var(--muted);margin-bottom:.75rem;}
.book-card p{font-size:.87rem;color:var(--muted);margin-bottom:1.25rem;}
.book-meta{display:flex;gap:.75rem;align-items:center;margin-bottom:1.25rem;}
.book-meta span{font-size:.78rem;color:var(--muted);}
/* LEARNING PATH */
.path{position:relative;padding-left:2rem;}
.path::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:1px;background:var(--border);}
.path-step{position:relative;margin-bottom:2.5rem;}
.path-dot{position:absolute;left:-2rem;width:24px;height:24px;border-radius:50%;background:var(--bg2);border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:var(--muted);}
.path-step.done .path-dot{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);}
.path-step h4{font-size:1rem;font-weight:700;margin-bottom:.35rem;}
.path-step p{font-size:.88rem;color:var(--muted);}
/* FOOTER MINI */
.footer-mini{border-top:1px solid var(--border);background:var(--bg2);padding:2rem;text-align:center;}
.footer-mini p{font-size:.82rem;color:var(--muted);}
.footer-mini a{color:var(--accent);}
/* LEARNING PLATFORM */
#catalog-view .page-hero{background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(34,197,94,.08) 0%,transparent 70%),var(--bg);padding:5rem 2rem 4rem;text-align:center;}
#catalog-view .page-hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:900;margin:.5rem 0 1rem;}
.catalog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;max-width:1100px;margin:0 auto;padding:0 2rem 5rem;}
.cat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color .2s,transform .2s,box-shadow .2s;cursor:pointer;}
.cat-card:hover{border-color:rgba(34,197,94,.4);transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.4);}
.cat-thumb{height:160px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0a1020,#1a2436);overflow:hidden;}
.cat-thumb svg{width:100%;height:auto;max-height:150px;display:block;}
.cat-body{padding:1.5rem;}
.cat-meta{display:flex;gap:.5rem;margin-bottom:.75rem;flex-wrap:wrap;}
.cat-body h3{font-size:1.05rem;font-weight:700;margin-bottom:.5rem;}
.cat-body p{font-size:.88rem;color:var(--muted);margin-bottom:1.25rem;line-height:1.55;}
.cat-stats{display:flex;gap:1.25rem;font-size:.78rem;color:var(--muted);margin-bottom:1.25rem;}
.btn-start{width:100%;text-align:center;padding:.65rem;border-radius:999px;font-size:.92rem;}
/* PLAYER VIEW */
#player-view{display:none;}
.player-topbar{display:flex;align-items:center;gap:1rem;padding:.85rem 1.5rem;background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:90;}
.player-progress-wrap{flex:1;max-width:400px;}
.player-progress-wrap label{font-size:.72rem;color:var(--muted);display:block;margin-bottom:.25rem;}
.progress-track{height:5px;background:rgba(30,41,59,.8);border-radius:999px;overflow:hidden;}
.progress-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .5s;}
.player-body{display:grid;grid-template-columns:260px 1fr;min-height:calc(100vh - 57px);}
.curriculum{border-right:1px solid var(--border);overflow-y:auto;background:var(--bg2);}
.curr-title{padding:1rem 1.25rem;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);border-bottom:1px solid var(--border);}
.curr-module{border-bottom:1px solid var(--border);}
.curr-mod-hd{padding:.85rem 1.25rem;font-size:.85rem;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:.5rem;}
.curr-mod-hd .mi{font-size:.7rem;color:var(--muted);margin-left:auto;}
.curr-lessons{display:none;}
.curr-lessons.open{display:block;}
.curr-lesson{padding:.6rem 1.25rem .6rem 2.25rem;font-size:.85rem;cursor:pointer;display:flex;align-items:center;gap:.6rem;transition:background .15s;}
.curr-lesson:hover{background:rgba(34,197,94,.05);}
.curr-lesson.active{background:rgba(34,197,94,.1);color:var(--accent);}
.curr-lesson .lock{font-size:.7rem;margin-left:auto;color:var(--muted);}
.curr-lesson .done{font-size:.72rem;color:var(--accent);margin-left:auto;}
.lesson-area{padding:2.5rem;overflow-y:auto;max-width:900px;margin:0 auto;width:100%;}
.lesson-area h2{font-size:1.6rem;font-weight:800;margin-bottom:.5rem;}
.lesson-area .lesson-meta{font-size:.82rem;color:var(--muted);margin-bottom:2rem;display:flex;gap:1rem;}
/* Fake video */
.fake-video{background:#000;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);margin-bottom:2rem;}
.fv-screen{position:relative;background:#000;overflow:hidden;aspect-ratio:16/9;width:100%;max-height:480px;}
#real-video{display:block;width:100%;height:100%;object-fit:contain;background:#000;}
#cf-stream-player{background:#000;width:100%;}
.fv-screen canvas{width:100%;height:100%;display:block;}
.fv-status{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;background:rgba(0,0,0,.55);color:#fff;transition:opacity .3s;}
.fv-status.hidden{opacity:0;pointer-events:none;}
.fv-icon{font-size:3rem;cursor:pointer;transition:transform .15s;}
.fv-icon:hover{transform:scale(1.1);}
.fv-controls{display:flex;align-items:center;gap:1rem;padding:.85rem 1.25rem;background:rgba(6,15,30,.9);}
.fv-btn{background:var(--accent);color:#000;border:none;border-radius:999px;padding:.4rem 1.1rem;font-size:.85rem;font-weight:700;cursor:pointer;}
.fv-track{flex:1;height:4px;background:rgba(255,255,255,.15);border-radius:999px;overflow:hidden;}
.fv-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .25s linear;}
.fv-time{font-size:.78rem;color:var(--muted);}
.fv-msg{font-size:.78rem;color:var(--muted);padding:.5rem 1.25rem .75rem;background:rgba(6,15,30,.9);}
/* Quiz */
#quiz-wrapper{display:none;margin-top:2rem;}
.quiz-header{margin-bottom:1.5rem;}
.quiz-header h3{font-size:1.2rem;font-weight:800;margin-bottom:.35rem;}
.quiz-header p{font-size:.88rem;color:var(--muted);}
.quiz-score-msg{padding:.75rem 1.25rem;border-radius:var(--radius);font-size:.9rem;font-weight:700;margin-bottom:1.5rem;display:none;}
.quiz-score-msg.pass{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.25);color:var(--accent);}
.quiz-score-msg.fail{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.25);color:#f87171;}
.quiz-q{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1rem;}
.quiz-q .q-num{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:.5rem;}
.quiz-q .q-text{font-size:1rem;font-weight:600;margin-bottom:1rem;}
.q-opts{display:flex;flex-direction:column;gap:.5rem;}
.q-opt{background:rgba(30,41,59,.5);border:1px solid var(--border);border-radius:var(--radius);padding:.65rem 1rem;font-size:.9rem;cursor:pointer;transition:background .15s,border-color .15s;}
.q-opt:hover{background:rgba(34,197,94,.08);border-color:rgba(34,197,94,.3);}
.q-opt.selected{background:rgba(34,197,94,.1);border-color:var(--accent);color:var(--accent);}
.q-opt.correct{background:rgba(34,197,94,.15);border-color:var(--accent);color:var(--accent);}
.q-opt.wrong{background:rgba(239,68,68,.1);border-color:#ef4444;color:#f87171;}
.quiz-submit{margin-top:1.5rem;}
.next-lesson-wrap{display:none;margin-top:2rem;padding:1.5rem;background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.25);border-radius:var(--radius-lg);text-align:center;}
.next-lesson-wrap h3{font-size:1.1rem;font-weight:700;margin-bottom:.5rem;color:var(--accent);}
.next-lesson-wrap p{font-size:.88rem;color:var(--muted);margin-bottom:1rem;}
@media(max-width:900px){.player-body{grid-template-columns:1fr;}.curriculum{height:200px;border-right:none;border-bottom:1px solid var(--border);}}
@media(max-width:640px){
nav{padding:.75rem 1rem;}
.nav-links{display:none;}
section{padding:3rem 1rem;}
.page-hero{padding:4rem 1rem 3rem;}
.lesson-area{padding:1.25rem;}
}