/* =====================================================================
   Claude AI Mastery — Neo-brutalist design system
   Palette: warm cream + charcoal + Claude-orange + sun-yellow
   ===================================================================== */

:root{
  --cream:      #F7F0E4;
  --cream-2:    #F1E7D6;
  --ink:        #181511;
  --ink-soft:   #2a2621;
  --paper:      #FFFFFF;
  --orange:     #DD5B28;   /* Claude-warm, brutalist punch */
  --orange-ink: #B9471C;
  --orange-soft:#F7C9A8;
  --clay:       #CC785C;   /* Claude clay secondary */
  --yellow:     #F2B338;
  --yellow-soft:#FBE4A6;
  --muted:      #6E665A;
  --line:       #181511;

  --radius:     22px;
  --radius-sm:  14px;
  --radius-lg:  32px;
  --shadow:     6px 6px 0 var(--line);
  --shadow-sm:  4px 4px 0 var(--line);
  --shadow-lg:  10px 10px 0 var(--line);
  --bw:         2.5px;      /* border width */

  --f-bn-display: 'Anek Bangla', 'Noto Sans Bengali', sans-serif;
  --f-bn-body:    'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
  --f-latin:      'Space Grotesk', 'Segoe UI', sans-serif;

  --maxw: 1180px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--cream);color:var(--ink);
  font-family:var(--f-bn-body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--f-bn-display);line-height:1.08;margin:0;font-weight:800;letter-spacing:-0.01em}
p{margin:0}
.en{font-family:var(--f-latin);font-weight:700}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
section{padding:72px 0;position:relative}
.sec-pad-sm{padding:48px 0}

.hl-orange{color:var(--orange)}
.hl-yellow{color:var(--yellow)}

/* ---------- eyebrow / badge ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--yellow);color:var(--ink);
  border:var(--bw) solid var(--line);border-radius:999px;
  padding:7px 16px;font-weight:700;font-size:14px;box-shadow:var(--shadow-sm);
}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{margin-bottom:16px}
.section-head h2{font-size:clamp(30px,5vw,50px)}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:18px;max-width:620px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;border:var(--bw) solid var(--line);border-radius:999px;
  font-weight:800;font-size:17px;cursor:pointer;transition:transform .12s ease, box-shadow .12s ease;
  box-shadow:var(--shadow);background:var(--paper);color:var(--ink);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--line)}
.btn-primary{background:var(--orange);color:#fff}
.btn-dark{background:var(--ink);color:var(--cream)}
.btn-ghost{background:transparent;box-shadow:none}
.btn-ghost:hover{box-shadow:var(--shadow-sm);background:var(--paper)}
.btn-lg{padding:18px 36px;font-size:19px}
.btn-block{width:100%}

/* ---------- navbar ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(247,240,228,.82);backdrop-filter:blur(10px);border-bottom:var(--bw) solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}
.brand img{height:38px;width:auto}
.brand .brand-sep{width:2px;height:24px;background:var(--line);opacity:.25}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-weight:600;font-size:15px;color:var(--ink-soft)}
.nav-links a:hover{color:var(--orange)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:var(--ink);color:#fff;border:var(--bw) solid var(--line);border-radius:12px;width:46px;height:44px;font-size:20px;cursor:pointer}

/* ---------- HERO ---------- */
.hero{padding-top:34px;padding-bottom:40px}
.hero-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:24px;align-items:stretch}
.hero-card{
  background:var(--ink);color:var(--cream);border:var(--bw) solid var(--line);
  border-radius:var(--radius-lg);padding:46px 44px;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)
}
.hero-card .eyebrow{background:var(--yellow)}
.hero h1{font-size:clamp(42px,7vw,86px);margin:22px 0 0;color:#fff;letter-spacing:-0.02em}
.hero .hero-sub{margin-top:22px;color:#d8d0c2;font-size:19px;max-width:520px;line-height:1.6}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-points{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.hero-points span{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:#eee;background:rgba(255,255,255,.08);border:1.5px solid rgba(255,255,255,.18);border-radius:999px;padding:6px 13px}
.hero-points span::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--yellow)}
.starburst{position:absolute;top:-22px;right:-18px;width:120px;height:120px;color:var(--yellow)}

.hero-side{
  background:var(--orange);border:var(--bw) solid var(--line);border-radius:var(--radius-lg);
  position:relative;overflow:hidden;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;justify-content:flex-end;min-height:470px
}
.hero-side .swirl{position:absolute;top:16px;left:20px;width:110px;color:var(--yellow);opacity:.95;z-index:1}
.hero-side .side-badge{position:absolute;top:18px;right:18px;z-index:4;background:var(--ink);color:#fff;border:var(--bw) solid var(--line);border-radius:14px;padding:8px 14px;font-weight:800;font-size:13px;transform:rotate(4deg);box-shadow:var(--shadow-sm)}
.hero-side img.portrait{width:100%;height:100%;object-fit:cover;object-position:center top;filter:saturate(1.05) contrast(1.03)}
.hero-side .portrait-wrap{position:relative;flex:1;margin:68px 20px 20px;z-index:2;border:var(--bw) solid var(--line);border-radius:20px;overflow:hidden;box-shadow:4px 4px 0 var(--line);background:var(--ink)}
.hero-side .side-caption{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(24,21,17,.9));color:#fff;padding:30px 18px 16px;font-weight:700;font-size:14.5px}

/* ---------- marquee ---------- */
.marquee{background:var(--ink);border-top:var(--bw) solid var(--line);border-bottom:var(--bw) solid var(--line);padding:16px 0;overflow:hidden}
.marquee-track{display:flex;gap:40px;width:max-content;animation:scrollx 26s linear infinite}
.marquee-track span{color:var(--cream);font-family:var(--f-latin);font-weight:700;font-size:20px;display:inline-flex;align-items:center;gap:40px;opacity:.92;white-space:nowrap}
.marquee-track span::after{content:"◆";color:var(--orange);font-size:13px}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ---------- generic card grid ---------- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--paper);border:var(--bw) solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);transition:transform .14s ease, box-shadow .14s ease;
}
.card:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-lg)}
.card .ico{width:52px;height:52px;border:var(--bw) solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--yellow-soft);margin-bottom:16px}
.card .ico svg{width:26px;height:26px}
.card h3{font-size:21px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15.5px}

/* transformation */
.transform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.tcard{position:relative;background:var(--paper);border:var(--bw) solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.tcard:nth-child(2){background:var(--yellow-soft)}
.tcard:nth-child(3){background:var(--ink);color:var(--cream)}
.tcard:nth-child(3) p{color:#cfc7b8}
.tcard .tag{display:inline-block;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em;border:2px solid currentColor;border-radius:999px;padding:4px 12px;margin-bottom:14px}
.tcard h3{font-size:30px;margin-bottom:10px}
.transform-arrow{position:absolute;right:-22px;top:50%;transform:translateY(-50%);z-index:3;background:var(--orange);color:#fff;border:var(--bw) solid var(--line);border-radius:50%;width:42px;height:42px;display:flex;align-items:center;justify-content:center;font-weight:900}

/* ---------- modules ---------- */
.modules-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.module{background:var(--paper);border:var(--bw) solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .14s, box-shadow .14s}
.module:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-lg)}
.module-head{display:flex;gap:16px;align-items:flex-start;padding:24px 24px 0;cursor:pointer}
.module-num{font-family:var(--f-latin);font-weight:700;font-size:30px;color:var(--orange);line-height:1;min-width:52px}
.module-head .m-meta{flex:1}
.module .kicker{display:inline-block;font-size:12px;font-weight:700;background:var(--cream-2);border:2px solid var(--line);border-radius:999px;padding:3px 11px;margin-bottom:8px}
.module h3{font-size:20px}
.module .m-sum{color:var(--muted);font-size:15px;margin-top:4px}
.module-toggle{background:var(--yellow);border:var(--bw) solid var(--line);border-radius:10px;width:36px;height:36px;font-size:18px;font-weight:900;cursor:pointer;flex-shrink:0;line-height:1}
.module-body{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px}
.module.open .module-body{max-height:400px}
.module-body ul{list-style:none;margin:16px 0 24px;padding:0}
.module-body li{position:relative;padding:7px 0 7px 28px;font-size:15.5px;border-top:1.5px dashed #d9cfbd}
.module-body li:first-child{border-top:none}
.module-body li::before{content:"→";position:absolute;left:0;color:var(--orange);font-weight:900}
.module.open .module-toggle{background:var(--orange);color:#fff}

/* ---------- live classes timeline ---------- */
.classes{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.class-card{background:var(--paper);border:var(--bw) solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);position:relative}
.class-card .cnum{position:absolute;top:-16px;left:24px;background:var(--orange);color:#fff;border:var(--bw) solid var(--line);border-radius:999px;padding:5px 16px;font-weight:800;font-size:14px}
.class-card h3{font-size:22px;margin:12px 0 8px}
.class-card p{color:var(--muted);font-size:15.5px}
.class-card .mods{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}
.class-card .mods span{font-size:12.5px;font-weight:700;background:var(--yellow-soft);border:2px solid var(--line);border-radius:8px;padding:3px 10px}

/* schedule strip */
.sched{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:24px}
.sched-box{border:var(--bw) solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.sched-box.main{background:var(--ink);color:var(--cream)}
.sched-box.support{background:var(--yellow-soft)}
.sched-box .lbl{font-weight:800;font-size:14px;text-transform:uppercase;letter-spacing:.05em;opacity:.8}
.sched-box .big{font-family:var(--f-bn-display);font-size:26px;font-weight:800;margin:8px 0 4px}
.sched-box .small{font-size:15px;opacity:.9}
.tz-note{margin-top:14px;font-size:14px;color:var(--muted);display:inline-flex;gap:8px;align-items:center}

/* ---------- pricing ---------- */
.price-wrap{display:grid;grid-template-columns:1fr .9fr;gap:24px;align-items:start}
.price-break{background:var(--paper);border:var(--bw) solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.price-break .ph{padding:20px 24px;border-bottom:var(--bw) solid var(--line);font-weight:800;background:var(--cream-2)}
.price-row{display:flex;justify-content:space-between;gap:14px;padding:14px 24px;border-top:1.5px dashed #d9cfbd;font-size:15.5px}
.price-row:first-of-type{border-top:none}
.price-row .amt{font-family:var(--f-latin);font-weight:700;white-space:nowrap}
.price-total{display:flex;justify-content:space-between;padding:16px 24px;background:var(--ink);color:var(--cream);font-weight:800}
.price-offer{background:var(--orange);color:#fff;border:var(--bw) solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:30px;position:relative}
.price-offer .otag{display:inline-block;background:var(--yellow);color:var(--ink);border:var(--bw) solid var(--line);border-radius:999px;padding:5px 14px;font-weight:800;font-size:13px}
.price-offer .was{opacity:.8;text-decoration:line-through;font-family:var(--f-latin);font-size:22px;margin-top:16px}
.price-offer .now{font-family:var(--f-bn-display);font-size:54px;font-weight:800;line-height:1;margin:4px 0}
.price-offer .pnote{font-size:14.5px;opacity:.95;margin-top:10px}
.price-offer .seats{margin-top:16px;background:rgba(255,255,255,.14);border:1.5px solid rgba(255,255,255,.4);border-radius:12px;padding:10px 14px;font-weight:700;font-size:14px}
.price-offer .btn{margin-top:20px}
.price-soon{font-family:var(--f-bn-display);font-size:34px;font-weight:800}

/* ---------- instructor ---------- */
.instructor{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}
.instr-photo{border:var(--bw) solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--orange);position:relative}
.instr-photo img{width:100%;aspect-ratio:1/1;object-fit:cover}
.instr-info h3{font-size:clamp(28px,4vw,40px)}
.instr-info .role{color:var(--orange);font-weight:800;margin:6px 0 16px;font-family:var(--f-bn-body)}
.instr-info .bio{color:var(--ink-soft);font-size:16.5px;line-height:1.7}
.instr-stats{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.instr-stats .st{border:var(--bw) solid var(--line);border-radius:14px;padding:12px 18px;background:var(--yellow-soft);box-shadow:var(--shadow-sm)}
.instr-stats .st b{display:block;font-family:var(--f-bn-display);font-size:26px}
.instr-stats .st span{font-size:13px;color:var(--muted)}
.audience{margin-top:22px;display:grid;gap:10px}
.audience .row{display:flex;gap:10px;align-items:flex-start;font-size:15.5px}
.audience .row::before{content:"✓";color:var(--orange);font-weight:900;margin-top:2px}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:14px}
.faq{background:var(--paper);border:var(--bw) solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);overflow:hidden}
.faq-q{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:20px 22px;cursor:pointer;font-weight:700;font-size:17px}
.faq-q .pm{flex-shrink:0;width:30px;height:30px;border:var(--bw) solid var(--line);border-radius:8px;background:var(--yellow);display:flex;align-items:center;justify-content:center;font-weight:900;transition:transform .2s}
.faq.open .faq-q .pm{background:var(--orange);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq.open .faq-a{max-height:320px}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:15.5px;line-height:1.7}

/* ---------- final CTA + form ---------- */
.cta-section{background:var(--ink);color:var(--cream);border-radius:var(--radius-lg);border:var(--bw) solid var(--line);box-shadow:var(--shadow-lg);padding:46px;margin:0 20px}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:start}
.cta-left h2{font-size:clamp(30px,4.5vw,46px);color:#fff}
.cta-left .ck{margin-top:22px;display:grid;gap:12px}
.cta-left .ck .row{display:flex;gap:11px;font-size:16px;color:#e4dccd}
.cta-left .ck .row::before{content:"✓";color:var(--yellow);font-weight:900}
.cta-left .cta-price{margin-top:24px;background:var(--orange);border:var(--bw) solid var(--line);border-radius:var(--radius);padding:18px 22px;display:inline-flex;align-items:baseline;gap:12px}
.cta-left .cta-price .now{font-family:var(--f-bn-display);font-size:36px;font-weight:800;color:#fff}
.cta-left .cta-price .was{text-decoration:line-through;opacity:.8;font-family:var(--f-latin)}

.reg-card{background:var(--cream);border:var(--bw) solid var(--line);border-radius:var(--radius);padding:28px;color:var(--ink)}
.reg-card h3{font-size:22px;margin-bottom:4px}
.reg-card .sub{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-weight:700;font-size:14px;margin-bottom:6px}
.field input,.field select{width:100%;padding:13px 15px;border:var(--bw) solid var(--line);border-radius:12px;font-size:15.5px;font-family:inherit;background:#fff}
.field input:focus,.field select:focus{outline:none;box-shadow:var(--shadow-sm)}
.form-msg{padding:12px 16px;border-radius:12px;font-size:14.5px;margin-bottom:14px;display:none}
.form-msg.ok{background:#def7df;border:2px solid #1f7a35;display:block}
.form-msg.err{background:#ffe3d6;border:2px solid var(--orange);display:block}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- footer ---------- */
.footer{border-top:var(--bw) solid var(--line);padding:40px 0;background:var(--cream-2)}
.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
.footer .brand img{height:34px}
.footer .f-links{display:flex;gap:22px;flex-wrap:wrap;font-size:15px}
.footer .f-links a:hover{color:var(--orange)}
.footer .f-note{margin-top:22px;font-size:13px;color:var(--muted);max-width:720px;line-height:1.6}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .hero-side{min-height:360px}
  .price-wrap{grid-template-columns:1fr}
  .instructor{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  section{padding:54px 0}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav.open .nav-links{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:var(--cream);border-bottom:var(--bw) solid var(--line);padding:18px 20px;gap:16px}
  .hero-card{padding:34px 26px}
  .grid-3,.grid-2,.modules-grid,.classes,.transform-grid,.sched{grid-template-columns:1fr}
  .transform-arrow{display:none}
  .cta-section{padding:30px 22px;margin:0 16px}
  .price-offer .now{font-size:44px}
  .nav-cta .btn:not(.nav-toggle){display:none}
}
@media (max-width:420px){
  body{font-size:16px}
  .hero h1{font-size:40px}
}

/* reduce motion */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}