*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#06080f;--bg2:#0b0e17;--surface:#0f1320;--surface2:#171c2e;
  --border:#1c2240;--text:#e4e8f2;--text2:#8b92b0;--text3:#4f5680;
  --accent:#6366f1;--accent2:#818cf8;--accent3:#4f46e5;
  --green:#10b981;--gold:#f59e0b;--red:#ef4444;--cyan:#22d3ee;
  --radius:14px;--radius-sm:8px;--transition:all .25s ease;
  --font:'Inter',-apple-system,sans-serif;
}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;min-height:100vh;overflow-x:hidden;
  background-image:radial-gradient(ellipse 80% 40% at 50% -10%,rgba(99,102,241,.06),transparent);
}
a{color:var(--accent2);text-decoration:none;transition:var(--transition)}
a:hover{color:#a5b4fc}
input,button,textarea{font-family:var(--font);outline:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Nav */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(6,8,15,.85);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  max-width:1100px;margin:0 auto;padding:12px 20px;
}
.nav-logo{font-size:17px;font-weight:800;display:flex;align-items:center;gap:8px}
.nav-logo span{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{font-size:13px;font-weight:500;color:var(--text2);padding:6px 12px;border-radius:6px}
.nav-links a:hover{color:var(--text);background:var(--surface)}
.nav-cta{
  padding:7px 18px;border-radius:7px;
  background:linear-gradient(135deg,var(--accent),var(--accent3));
  color:#fff!important;font-weight:600!important;font-size:12px!important
}
.nav-cta:hover{box-shadow:0 4px 16px rgba(99,102,241,.3)!important}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:22px;cursor:pointer}

/* Page Layout */
.page{padding:80px 0 60px;min-height:100vh;animation:fadeIn .4s ease}
.page-hero{
  padding:100px 20px 60px;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(99,102,241,.04),transparent);
}
.page-hero h1{font-size:clamp(24px,4vw,42px);font-weight:800;line-height:1.2;margin-bottom:10px}
.page-hero h1 span{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.page-hero p{font-size:14px;color:var(--text2);max-width:550px;margin:0 auto}
.page-hero .badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 14px;border-radius:20px;
  background:rgba(99,102,241,.08);border:1px solid rgba(99,102,241,.15);
  font-size:11px;font-weight:600;color:var(--accent2);margin-bottom:16px;
}

/* Cards */
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:var(--transition);
}
.card:hover{border-color:rgba(99,102,241,.12);box-shadow:0 4px 24px rgba(0,0,0,.2)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 22px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;
  border:none;cursor:pointer;transition:var(--transition);text-align:center;
}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent3));color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(99,102,241,.25)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--border)}
.btn-lg{padding:14px 32px;font-size:15px;font-weight:700}
.btn-block{width:100%}
.btn-success{background:var(--green);color:#fff}
.btn-success:hover{box-shadow:0 4px 16px rgba(16,185,129,.25)}
.btn-gold{background:linear-gradient(135deg,var(--gold),#d97706);color:#fff}
.btn-gold:hover{box-shadow:0 4px 16px rgba(245,158,11,.25)}

/* Inputs */
input{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--bg2);color:var(--text);font-size:14px;margin-bottom:12px;
  transition:var(--transition);
}
input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(99,102,241,.1)}

/* Auth */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:80px 20px}
.auth-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:36px 32px;width:100%;max-width:400px;
}
.auth-card h2{font-size:22px;font-weight:800;text-align:center;margin-bottom:4px}
.auth-card p{font-size:13px;color:var(--text2);text-align:center;margin-bottom:24px}
.auth-error{font-size:12px;color:var(--red);margin-bottom:12px;display:none;text-align:center}
.auth-switch{font-size:12px;color:var(--text3);text-align:center;margin-top:16px}
.auth-switch a{color:var(--accent2);cursor:pointer}

/* Course Grid */
.course-hero{text-align:center;padding:100px 20px 40px}
.course-hero h1{font-size:clamp(22px,3.5vw,38px);font-weight:800;margin-bottom:8px}
.course-hero p{font-size:14px;color:var(--text2);max-width:600px;margin:0 auto 24px}
.course-stats{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.course-stat{text-align:center}
.course-stat-num{font-size:22px;font-weight:800;color:var(--accent2)}
.course-stat-label{font-size:11px;color:var(--text3);margin-top:2px}

/* Lessons List */
.lessons-section{padding:0 20px 60px;max-width:800px;margin:0 auto}
.lesson-item{
  display:flex;align-items:center;gap:14px;
  padding:16px 18px;border-radius:10px;
  background:var(--surface);border:1px solid var(--border);
  transition:var(--transition);margin-bottom:8px;cursor:default;
}
.lesson-item.locked{opacity:.55}
.lesson-item.current{border-color:var(--accent);background:rgba(99,102,241,.04)}
.lesson-item.completed{border-color:rgba(16,185,129,.15)}/* .lesson-item.completed{opacity:.8} */
.lesson-num{
  width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;background:var(--bg2);border:1px solid var(--border);flex-shrink:0;
}
.lesson-item.current .lesson-num{background:rgba(99,102,241,.12);border-color:var(--accent);color:var(--accent2)}
.lesson-item.completed .lesson-num{background:rgba(16,185,129,.12);border-color:var(--green);color:var(--green)}
.lesson-info{flex:1;min-width:0}
.lesson-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lesson-desc{font-size:11px;color:var(--text3);display:none}
.lesson-meta{display:flex;align-items:center;gap:8px;flex-shrink:0}
.lesson-duration{font-size:11px;color:var(--text3)}
.lesson-status{font-size:14px}
.lesson-status.locked{color:var(--text3)}
.lesson-status.completed{color:var(--green)}
.lesson-status.current{color:var(--accent2)}

/* Lesson View */
.lesson-page{padding-top:0}
.lesson-header{padding:90px 20px 20px;max-width:800px;margin:0 auto}
.lesson-header h2{font-size:20px;font-weight:700;margin-bottom:4px}
.lesson-header .meta{font-size:12px;color:var(--text3);display:flex;gap:12px}
.video-placeholder{
  width:100%;aspect-ratio:16/9;border-radius:var(--radius);
  background:var(--surface2);display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:12px;margin-bottom:24px;border:1px solid var(--border);
}
.video-placeholder .icon{font-size:40px;opacity:.4}
.video-placeholder .text{font-size:13px;color:var(--text3)}
.lesson-content{max-width:800px;margin:0 auto;padding:0 20px 60px}
.lesson-content .desc{font-size:14px;color:var(--text2);line-height:1.8;margin-bottom:24px}
.lesson-actions{display:flex;gap:12px;flex-wrap:wrap}

/* Advice Section */
.advice-section{
  max-width:700px;margin:0 auto;padding:0 20px 40px;
}
.advice-card{
  background:linear-gradient(135deg,rgba(99,102,241,.04),var(--surface));
  border:1px solid rgba(99,102,241,.12);border-radius:var(--radius);
  padding:28px;margin-bottom:20px;
}
.advice-card h3{font-size:15px;font-weight:700;margin-bottom:12px;color:var(--accent2)}
.advice-card p{font-size:13px;color:var(--text2);line-height:1.8}

/* Dashboard */
.dashboard-progress{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;margin-bottom:20px;
}
.progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.progress-header h3{font-size:15px;font-weight:700}
.progress-pct{font-size:22px;font-weight:800;color:var(--accent2)}
.progress-bar{height:4px;background:var(--border);border-radius:2px;overflow:hidden;margin-bottom:8px}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:2px;transition:width .5s ease}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;padding:0 20px 60px}
.pricing-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;position:relative;transition:var(--transition);
}
.pricing-card.popular{border-color:rgba(99,102,241,.25);background:linear-gradient(180deg,rgba(99,102,241,.04),var(--surface))}
.pricing-card h3{font-size:20px;font-weight:700;margin-bottom:4px}
.pricing-desc{font-size:13px;color:var(--text2);margin-bottom:16px}
.pricing-features{list-style:none;margin-bottom:20px;display:flex;flex-direction:column;gap:8px}
.pricing-features li{font-size:13px;display:flex;align-items:center;gap:8px}
.pricing-features .ck{color:var(--green)}
.pricing-features .no{color:var(--text3)}

/* Payment Modal */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:200;
  background:rgba(0,0,0,.6);backdrop-filter:blur(8px);
  align-items:center;justify-content:center;
}
.modal-overlay.open{display:flex}
.modal-content{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;width:100%;max-width:420px;margin:20px;
}
.modal-content h3{font-size:18px;font-weight:700;margin-bottom:4px}
.modal-content p{font-size:13px;color:var(--text2);margin-bottom:20px}

/* Loading */
.loading{text-align:center;padding:60px 0;color:var(--text3)}
.spinner{width:24px;height:24px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 12px}
@keyframes spin{to{transform:rotate(360deg)}}

/* Toast */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:300;
  padding:12px 24px;border-radius:8px;font-size:13px;font-weight:600;
  display:none;max-width:90%;white-space:nowrap;
}
.toast.success{display:block;background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,2);color:var(--green)}
.toast.error{display:block;background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.2);color:var(--red)}

/* Animations */
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ========== LOGO & FOOTER (from main site) ========== */
:root{--cyan:#22d3ee;--cyan2:#0891b2;--gold:#f59e0b}
.logo-atla{font-size:14px;font-weight:800;color:#fff;letter-spacing:1.5px;line-height:1}
.logo-step{color:var(--cyan)}
.logo-academy{font-size:7px;color:var(--cyan);letter-spacing:2.5px;font-weight:600;text-transform:uppercase;display:block;margin-top:1px;line-height:1}
.nav-logo{display:flex;align-items:center;gap:8px;text-decoration:none}
.nav-logo span{background:none;-webkit-text-fill-color:initial}
.footer-logo-link{display:flex;align-items:center;gap:8px;text-decoration:none;margin-bottom:12px;flex-wrap:wrap}
.footer-logo-link .logo-atla{font-size:16px}
.footer-logo-link .logo-academy{font-size:8px}

/* Mobile Nav */
.nav-mobile{display:none}
@media(max-width:768px){
  .nav-mobile.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:rgba(6,8,15,.98);border-bottom:1px solid var(--border);padding:12px 20px;gap:4px}
  .nav-mobile a{padding:10px 12px;border-radius:6px;font-size:13px;color:var(--text2);text-decoration:none}
  .nav-mobile a:hover{background:var(--surface);color:var(--text)}
}

/* Footer */
footer{padding:60px 24px 30px;border-top:1px solid var(--border)}
.footer-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{font-size:12px;color:var(--text3);line-height:1.7;margin-bottom:12px;max-width:360px}
.footer-social{display:flex;gap:6px;flex-wrap:wrap}
.footer-social a{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:13px;transition:var(--transition);border:1px solid var(--border);color:var(--text3)}
.footer-social a:hover{transform:translateY(-2px);color:var(--cyan);border-color:var(--cyan)}
.footer-col h4{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text);margin-bottom:12px}
.footer-col a{display:block;padding:3px 0;font-size:12px;color:var(--text3);transition:var(--transition)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{padding-top:16px;margin-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-copy{font-size:11px;color:var(--text3)}
.footer-copy a{color:var(--text2)}
.footer-copy a:hover{color:var(--cyan)}
.footer-legal{display:flex;gap:12px}
.dmca-badge img{opacity:.5;transition:opacity .2s;height:14px}
.dmca-badge img:hover{opacity:1}

/* Disclaimer Grid */
.footer-disclaimer-grid{display:flex;flex-wrap:wrap;gap:16px;margin:24px 0}
.disclaimer-section{flex:1;min-width:240px;background:rgba(34,211,238,.03);border-left:3px solid var(--cyan);padding:16px;border-radius:0 8px 8px 0}
.disclaimer-section h3{font-size:12px;font-weight:700;color:#fff;margin-bottom:6px}
.disclaimer-section p{font-size:11px;color:var(--text3);line-height:1.7;margin-bottom:4px}
.disclaimer-section p:last-child{margin-bottom:0}
.disclaimer-highlight{color:var(--cyan);font-weight:600}

@media(max-width:768px){.footer-inner{grid-template-columns:1fr 1fr;gap:24px}}
@media(max-width:480px){.footer-inner{grid-template-columns:1fr}footer{padding:40px 16px 24px}}

/* Responsive additions */
@media(max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .pricing-grid{grid-template-columns:1fr}
  .course-stats{gap:16px}
  .lesson-actions{flex-direction:column}
  .lesson-actions .btn{width:100%}
}