:root{
  --bg: #0b0c10;
  --bg-elev: #14151b;
  --bg-elev-2: #1b1c24;
  --border: rgba(255,255,255,0.08);
  --text: #f2f2f5;
  --text-dim: #a9aab3;
  --text-faint: #75767f;
  --accent-purple: #8b5cf6;
  --accent-blue: #4f7cff;
  --accent-grad: linear-gradient(120deg, #4f7cff, #8b5cf6);
  --star: #f5b942;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
html,body{ margin:0; padding:0; }

body{
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a{ color: inherit; text-decoration: none; }
img{ display:block; max-width:100%; }
button{ font-family: inherit; cursor:pointer; }
ul{ margin:0; padding:0; list-style:none; }

.wrap{
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 60px;
}

/* ---------- animations ---------- */
@keyframes fadeUp{
  from{ opacity:0; transform: translateY(18px); }
  to{ opacity:1; transform: translateY(0); }
}
@keyframes fadeIn{
  from{ opacity:0; }
  to{ opacity:1; }
}
.reveal{
  opacity:0;
  animation: fadeUp .6s cubic-bezier(.22,.9,.32,1) forwards;
}
.reveal-1{ animation-delay: .05s; }
.reveal-2{ animation-delay: .12s; }
.reveal-3{ animation-delay: .19s; }
.reveal-4{ animation-delay: .26s; }
.reveal-5{ animation-delay: .33s; }
.reveal-6{ animation-delay: .40s; }
.reveal-7{ animation-delay: .47s; }

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}

/* ---------- Header ---------- */
header{
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(11,12,16,0.85);
  backdrop-filter: blur(10px);
  z-index: 50;
}
.header-inner{
  display:flex;
  align-items:center;
  gap: 40px;
}
.logo{
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  transition: opacity .2s ease;
}
.logo:hover{ opacity: .85; }
.logo .cove{
  background: linear-gradient(90deg, #7c8bff, #a879f0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
nav{
  display:flex;
  gap: 32px;
  flex: 1;
}
nav a{
  font-size: 14.5px;
  color: var(--text-dim);
  padding-bottom: 4px;
  position: relative;
  transition: color .2s ease;
}
nav a:hover{ color: var(--text); }
nav a.active{
  color: var(--text);
}
nav a.active::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-21px;
  height:2px;
  background: var(--accent-grad);
}
.search-box{
  display:flex;
  align-items:center;
  gap:10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 18px;
  width: 300px;
  color: var(--text-faint);
  font-size: 13.5px;
  transition: border-color .2s ease;
}
.search-box:hover{ border-color: rgba(255,255,255,0.2); }
.search-box svg{ flex-shrink:0; opacity:0.6; }
.header-right{
  display:flex;
  align-items:center;
  gap: 22px;
  margin-left: auto;
}
.login-link{
  font-size: 14.5px;
  color: var(--text-dim);
  transition: color .2s ease;
}
.login-link:hover{ color: var(--text); }
.btn-primary{
  background: linear-gradient(100deg, #6b6bf5, #9d5bf0);
  color: #fff;
  border: none;
  padding: 11px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 10px 24px rgba(139,92,246,0.35); }
.btn-primary:active{ transform: translateY(0); }

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  gap:8px;
  align-items:center;
  font-size: 13px;
  color: var(--text-faint);
  padding: 22px 0 0;
}
.breadcrumb a{ color: var(--text-faint); transition: color .2s ease; }
.breadcrumb a:hover{ color: var(--text); }
.breadcrumb span.sep{ color: rgba(255,255,255,0.25); }
.breadcrumb span.current{ color: var(--text-dim); }

/* ---------- Hero ---------- */
.hero-section{ padding: 28px 0 0; }
.hero{
  position: relative;
  display:flex;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 360px;
  background:
    radial-gradient(ellipse at 78% 30%, rgba(255,205,120,0.10), transparent 55%),
    linear-gradient(115deg, #05060a 0%, #0d1220 38%, #171226 68%, #241a33 100%);
}
.hero-scene{
  position:absolute; inset:0;
  background-image:
    radial-gradient(circle at 88% 18%, rgba(255,224,150,0.16), transparent 22%),
    linear-gradient(180deg, rgba(0,0,0,0.15), rgba(0,0,0,0.55)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 140px);
}
.hero-skyline{
  position:absolute; right:0; top:0; bottom:0; width: 46%;
  background:
    linear-gradient(0deg, rgba(5,6,10,0.9), transparent 60%),
    repeating-linear-gradient(90deg, rgba(90,110,160,0.16) 0 18px, rgba(20,24,38,0.5) 18px 40px);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 30%);
  mask-image: linear-gradient(90deg, transparent, black 30%);
  opacity: .8;
}
.hero-content{
  position:relative; z-index:2;
  padding: 46px 0 40px 44px;
  max-width: 560px;
  display:flex; flex-direction: column; justify-content: center;
}
.hero-eyebrow{
  font-size: 12.5px; letter-spacing: 3px; color: rgba(255,255,255,0.55);
  margin-bottom: 18px; display:flex; gap: 10px; align-items:center;
}
.hero-eyebrow span:not(:last-child)::after{ content:"·"; margin-left: 10px; color: rgba(255,255,255,0.3); }
.hero-title{
  font-size: 46px; line-height: 1.08; font-weight: 800; letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.hero-title .grad{
  background: linear-gradient(100deg, #7c8bff, #b57af0);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-desc{
  font-size: 15.5px; line-height: 1.6; color: rgba(230,230,238,0.78);
  max-width: 440px; margin: 0 0 26px;
}
.hero-meta{ display:flex; gap: 26px; font-size: 13.5px; color: rgba(230,230,238,0.65); margin-bottom: 30px; }
.hero-meta span{ display:flex; align-items:center; gap:8px; }
.hero-actions{ display:flex; gap: 14px; }
.btn-white{
  background:#fff; color:#0b0c10; border:none; padding: 13px 24px; border-radius: 10px;
  font-size: 14.5px; font-weight: 700; display:flex; align-items:center; gap:8px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-white:hover{ transform: translateY(-2px); box-shadow: 0 10px 24px rgba(255,255,255,0.15); }
.btn-ghost{
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.16); color:#fff;
  padding: 13px 22px; border-radius: 10px; font-size: 14.5px; font-weight: 600;
  display:flex; align-items:center; gap:8px; transition: background .18s ease, transform .18s ease;
}
.btn-ghost:hover{ background: rgba(255,255,255,0.14); transform: translateY(-2px); }
.hero-side{
  position:relative; z-index:2; margin-left:auto; padding: 40px 44px;
  display:flex; flex-direction: column; gap: 22px; align-items:flex-end; justify-content:flex-start;
}
.hero-side-note{
  font-family: "Brush Script MT", cursive; font-size: 26px; line-height:1.25; color: #ffe6b0;
  text-align:right; text-shadow: 0 0 18px rgba(255,214,130,0.35);
}
.hero-steps{
  display:flex; flex-direction:column; gap: 14px; font-size: 13px; color: rgba(255,255,255,0.7);
  border-left: 1px solid rgba(255,255,255,0.18); padding-left: 16px; margin-top: 10px;
}
.hero-steps div{ display:flex; gap:10px; align-items:center; }
.hero-steps b{ color: rgba(255,255,255,0.4); font-weight:600; }
.hero-steps div.done{ color:#fff; }

/* small hero used on category/browse/course pages */
.hero-small{ min-height: 190px; }
.hero-small .hero-content{ padding: 34px 0 34px 40px; }
.hero-small .hero-title{ font-size: 34px; margin-bottom: 10px; }
.hero-small .hero-desc{ margin-bottom: 0; }

/* ---------- Section headings ---------- */
section{ padding: 34px 0 0; }
.section-head{
  display:flex; align-items:center; gap:8px; font-size: 18px; font-weight: 700;
  margin-bottom: 16px; color: var(--text);
}
.section-head a{ transition: opacity .2s ease; }
.section-head a:hover{ opacity: .7; }

/* ---------- Continue Learning ---------- */
.continue-grid{ display:grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.continue-card{
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 14px; display:flex; align-items:center; gap: 12px;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.continue-card:hover{ transform: translateY(-4px); border-color: rgba(255,255,255,0.18); background: var(--bg-elev-2); }
.continue-icon{
  width: 42px; height:42px; border-radius: 10px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center; font-size: 18px;
}
.continue-body{ flex:1; min-width:0; }
.continue-title{
  font-size: 13.5px; font-weight: 600; margin-bottom: 8px;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.progress-row{ display:flex; align-items:center; gap:8px; }
.progress-track{ flex:1; height:5px; border-radius: 3px; background: rgba(255,255,255,0.08); overflow:hidden; }
.progress-fill{ height:100%; border-radius:3px; }
.progress-pct{ font-size: 11.5px; color: var(--text-faint); flex-shrink:0; }

/* ---------- Trending / product cards ---------- */
.trending-grid{ display:grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.trend-card{
  position:relative; border-radius: var(--radius-md); overflow:hidden; aspect-ratio: 3.5/4.6;
  display:flex; flex-direction:column; justify-content:flex-end; padding: 16px; isolation:isolate;
  transition: transform .25s cubic-bezier(.22,.9,.32,1), box-shadow .25s ease;
}
.trend-card:hover{ transform: translateY(-6px) scale(1.015); box-shadow: 0 16px 32px rgba(0,0,0,0.4); }
.trend-card::before{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,0.85) 92%); z-index:1;
}
.trend-card > *{ position:relative; z-index:2; }
.trend-badge{
  position:absolute; top:12px; left:12px; z-index:3; background: #e6493f; color:#fff;
  font-size: 10px; font-weight:700; letter-spacing: 0.4px; padding: 4px 9px; border-radius:5px;
}
.trend-title{ font-size: 17px; font-weight:800; line-height:1.2; margin-bottom: 10px; }
.trend-desc{ font-size: 12px; color: rgba(255,255,255,0.75); margin-bottom: 12px; line-height:1.4; }
.trend-foot{ display:flex; justify-content:space-between; align-items:center; font-size: 12px; color: rgba(255,255,255,0.75); }
.trend-rating{ display:flex; align-items:center; gap:5px; color: var(--star); font-weight:600; }
.trend-price{ font-weight:800; color:#fff; font-size:13.5px; }

/* ---------- Category ---------- */
.category-grid{ display:grid; grid-template-columns: repeat(7, 1fr); gap: 14px; }
.cat-card{
  position:relative; border-radius: var(--radius-md); overflow:hidden; aspect-ratio: 1.5/1;
  display:flex; align-items:flex-end; padding: 14px; isolation:isolate;
  transition: transform .2s ease, box-shadow .2s ease;
}
.cat-card:hover{ transform: translateY(-4px); box-shadow: 0 14px 28px rgba(0,0,0,0.35); }
.cat-card::before{
  content:""; position:absolute; inset:0; background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.7)); z-index:1;
}
.cat-card span{ position:relative; z-index:2; font-weight: 800; font-size: 13px; letter-spacing: 0.3px; text-transform: uppercase; }

/* ---------- Originals ---------- */
.originals-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.orig-card{
  position:relative; border-radius: var(--radius-lg); overflow:hidden; min-height: 300px; padding: 26px;
  display:flex; flex-direction:column; justify-content:flex-end; isolation:isolate; border: 1px solid var(--border);
  transition: transform .25s ease, box-shadow .25s ease;
}
.orig-card:hover{ transform: translateY(-6px); box-shadow: 0 18px 36px rgba(0,0,0,0.4); }
.orig-card::before{
  content:""; position:absolute; inset:0; background: linear-gradient(180deg, transparent 20%, rgba(0,0,0,0.82) 90%); z-index:1;
}
.orig-card > *{ position:relative; z-index:2; }
.orig-eyebrow{ font-size: 11px; letter-spacing: 1.5px; color: rgba(255,255,255,0.6); margin-bottom: 10px; text-transform: uppercase; }
.orig-title{ font-size: 25px; font-weight: 800; line-height:1.15; margin-bottom: 10px; }
.orig-title.accent{
  background: linear-gradient(100deg, #ff8fb3, #ffb2c9);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.orig-desc{ font-size: 13px; color: rgba(255,255,255,0.75); line-height:1.5; margin-bottom: 16px; max-width: 300px; }
.orig-tags{ display:flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.orig-tags span{
  font-size: 11.5px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.14);
  padding: 5px 11px; border-radius: 999px; color: rgba(255,255,255,0.85);
}
.orig-price{ font-size: 17px; font-weight: 800; }

/* ---------- Course / product detail page ---------- */
.detail-layout{
  display:grid; grid-template-columns: 1fr 340px; gap: 32px; padding: 30px 0 60px;
  align-items:start;
}
.detail-main .badge-row{ display:flex; gap:10px; align-items:center; margin-bottom:14px; }
.tag-pill{
  font-size: 11.5px; font-weight:700; letter-spacing:.3px; text-transform:uppercase;
  padding: 5px 11px; border-radius:999px; background: rgba(139,92,246,0.16); color:#c8b4ff;
  border: 1px solid rgba(139,92,246,0.35);
}
.detail-title{ font-size: 34px; font-weight: 800; line-height:1.15; margin: 0 0 14px; }
.detail-meta{ display:flex; gap:22px; flex-wrap:wrap; font-size: 13.5px; color: var(--text-dim); margin-bottom: 22px; }
.detail-meta span{ display:flex; align-items:center; gap:6px; }
.detail-meta .rating{ color: var(--star); font-weight:700; }
.detail-desc{ font-size: 15px; line-height:1.7; color: rgba(230,230,238,0.82); max-width: 640px; margin-bottom: 30px; }
.detail-block-title{ font-size: 18px; font-weight:700; margin: 30px 0 14px; }
.learn-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; margin-bottom: 10px; }
.learn-item{ display:flex; gap:10px; font-size: 13.5px; color: rgba(230,230,238,0.85); line-height:1.5; }
.learn-item .tick{ color:#5fd68d; flex-shrink:0; }
.curriculum{ display:flex; flex-direction:column; gap:10px; }
.curr-row{
  display:flex; justify-content:space-between; align-items:center; padding: 14px 16px;
  background: var(--bg-elev); border:1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 13.5px; transition: border-color .2s ease;
}
.curr-row:hover{ border-color: rgba(255,255,255,0.2); }
.curr-row .curr-name{ color: var(--text); font-weight:600; }
.curr-row .curr-dur{ color: var(--text-faint); }

.detail-side{
  position: sticky; top: 100px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 22px; display:flex; flex-direction:column; gap:16px;
}
.side-price{ font-size: 30px; font-weight: 800; }
.side-price small{ font-size: 14px; color: var(--text-faint); font-weight:500; margin-left:8px; text-decoration: line-through; }
.side-cta{ width:100%; text-align:center; }
.side-list{ display:flex; flex-direction:column; gap:10px; font-size: 13px; color: var(--text-dim); }
.side-list div{ display:flex; gap:10px; align-items:center; }

.related-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ---------- Empty state ---------- */
.empty-state{
  border: 1px dashed rgba(255,255,255,0.18); border-radius: var(--radius-lg);
  padding: 60px 30px; text-align:center; color: var(--text-dim);
}
.empty-state h3{ color: var(--text); font-size: 18px; margin: 0 0 8px; }
.empty-state p{ font-size: 13.5px; margin:0; }

footer{
  margin-top: 60px; border-top: 1px solid var(--border); padding: 30px 0;
  color: var(--text-faint); font-size: 13px; display:flex; justify-content:space-between;
}
footer a{ color: var(--text-faint); transition: color .2s ease; }
footer a:hover{ color: var(--text); }

/* ---------- Backgrounds (art-directed gradients, not real photos) ---------- */
.bg-hero-photo{ background: radial-gradient(circle at 30% 65%, rgba(255,255,255,0.05), transparent 40%), linear-gradient(200deg, #1b1420 0%, #171b2b 45%, #0a0c14 100%); }
.bg-1{ background: linear-gradient(160deg,#2c2340,#151625); }
.bg-2{ background: linear-gradient(160deg,#1c2b1f,#0e1614); }
.bg-3{ background: linear-gradient(160deg,#241f38,#141426); }
.bg-4{ background: linear-gradient(150deg,#3a2a1e,#181410); }
.bg-5{ background: linear-gradient(140deg,#5b3fa8,#2a1e55,#171233); }
.bg-6{ background: linear-gradient(160deg,#3a2b22,#171310); }
.bg-7{ background: linear-gradient(160deg,#232b3a,#0e1218); }
.bg-8{ background: linear-gradient(160deg,#1e2b26,#0c1512); }
.bg-9{ background: linear-gradient(140deg,#33210f,#1b120a); }
.bg-10{ background: linear-gradient(160deg,#241827,#100b16); }
.bg-11{ background: linear-gradient(150deg,#2d2410,#151006); }
.bg-12{ background: linear-gradient(160deg,#101a2e,#080c14); }
.bg-13{ background: linear-gradient(160deg,#301c26,#160d13); }

.icon-python{ background: linear-gradient(135deg,#3776ab,#ffd43b); }
.icon-chart{ background: linear-gradient(135deg,#7c3aed,#4f7cff); }
.icon-figma{ background: #1a1a22; }
.icon-finance{ background: linear-gradient(135deg,#d9a441,#8a5a1e); }
.icon-ai{ background: linear-gradient(135deg,#5b7fd6,#8a99b8); }

/* ---------- Responsive ---------- */
@media (max-width: 1180px){
  .wrap{ padding: 0 28px; }
  .continue-grid{ grid-template-columns: repeat(3,1fr); }
  .trending-grid{ grid-template-columns: repeat(3,1fr); }
  .category-grid{ grid-template-columns: repeat(4,1fr); }
  .originals-grid{ grid-template-columns: 1fr 1fr; }
  .related-grid{ grid-template-columns: repeat(2,1fr); }
  .detail-layout{ grid-template-columns: 1fr; }
  .detail-side{ position:static; }
  nav{ display:none; }
}
@media (max-width: 760px){
  .hero{ flex-direction:column; }
  .hero-side{ align-items:flex-start; padding-top:0; }
  .hero-title{ font-size:32px; }
  .search-box{ width: 160px; }
  .continue-grid{ grid-template-columns: repeat(2,1fr); }
  .trending-grid{ grid-template-columns: repeat(2,1fr); }
  .category-grid{ grid-template-columns: repeat(2,1fr); }
  .originals-grid{ grid-template-columns: 1fr; }
  .learn-grid{ grid-template-columns: 1fr; }
  .related-grid{ grid-template-columns: 1fr; }
  .header-inner{ gap: 16px; }
  footer{ flex-direction:column; gap:10px; }
}