/* Education Products Lab — Design System */
:root{
  --bg:#0E0E10;
  --bg-2:#121215;
  --surface:#161619;
  --surface-2:#1C1C20;
  --line:#2A2A2F;
  --line-soft:#212125;
  --text:#F2F2F3;
  --muted:#9C9CA4;
  --muted-2:#6E6E77;
  --accent:#4D5BE0;
  --accent-hover:#4150CE;
  --accent-soft:rgba(77,91,224,.12);
  --ok:#3FAE7E;
  --radius:10px;
  --radius-sm:6px;
  --radius-lg:14px;
  --container:1200px;
  --font:'Inter',system-ui,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  --display:'Space Grotesk','Inter',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;letter-spacing:-.015em;margin:0;line-height:1.15}
p{margin:0}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.muted{color:var(--muted)}
.small{font-size:14px}
.label{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(14,14,16,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-soft)}
.header-inner{display:flex;align-items:center;gap:30px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:600;font-size:16px;letter-spacing:-.02em;white-space:nowrap}
.logo-mark{width:28px;height:28px;border-radius:6px;background:var(--accent);display:grid;place-items:center;font-size:11px;font-weight:700;letter-spacing:.02em;color:#fff;flex:none;font-family:var(--font)}
.main-nav{display:flex;gap:26px}
.main-nav a{font-size:15px;color:var(--muted);transition:color .15s}
.main-nav a:hover,.main-nav a.active{color:var(--text)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.cart-link{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--muted);padding:7px 12px;border-radius:8px;border:1px solid var(--line);transition:.15s}
.cart-link:hover{color:var(--text);border-color:#3a3a41}
.cart-count{min-width:19px;height:19px;padding:0 6px;border-radius:99px;background:var(--accent);color:#fff;font-size:11.5px;font-weight:600;display:grid;place-items:center}
.cart-count[data-empty="1"]{background:var(--surface-2);color:var(--muted-2)}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--text);border-radius:8px;width:38px;height:36px;cursor:pointer}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:8px;font-weight:500;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover)}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:#3d3d45;background:var(--surface)}
.btn-lg{padding:13px 24px;font-size:16px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ---------- Hero ---------- */
.hero{border-bottom:1px solid var(--line-soft)}
.hero-inner{padding:80px 0 64px;display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.hero h1{font-size:clamp(36px,4.6vw,54px);margin:20px 0 20px;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p.lead{font-size:17.5px;color:var(--muted);max-width:54ch}
.hero-cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:flex;gap:0;margin-top:52px;border-top:1px solid var(--line-soft);flex-wrap:wrap}
.hero-stats div{padding:20px 26px 0 0;margin-right:26px;border-right:1px solid var(--line-soft)}
.hero-stats div:last-child{border-right:0}
.hero-stats strong{display:block;font-family:var(--display);font-size:23px;font-weight:600}
.hero-stats span{font-size:13px;color:var(--muted-2)}
.hero-visual{display:grid;gap:10px;padding-top:6px}
.tile{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;transition:border-color .15s}
.tile:hover{border-color:#3a3a42}
.tile .thumb{width:72px;aspect-ratio:16/9;border-radius:var(--radius-sm);overflow:hidden;flex:none}
.tile b{display:block;font-size:15px;font-family:var(--display);font-weight:600}
.tile span{font-size:13px;color:var(--muted-2)}
.tile .price{margin-left:auto;font-size:14.5px;color:var(--muted);white-space:nowrap}

/* ---------- Sections ---------- */
.section{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap;border-bottom:1px solid var(--line-soft);padding-bottom:18px}
.section-head h2{font-size:clamp(22px,2.6vw,28px)}
.section-head p{color:var(--muted);margin-top:9px;max-width:64ch;font-size:15px}
.link-more{color:var(--accent);font-size:15px}
.link-more:hover{text-decoration:underline}

/* ---------- Karten-Grid ---------- */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{display:flex;flex-direction:column}
.card-media{aspect-ratio:16/9;border-radius:var(--radius-sm);overflow:hidden;margin-bottom:11px;flex:none;border:1px solid var(--line-soft);transition:border-color .15s}
.card:hover .card-media{border-color:#4a4a55}
.card-media svg{width:100%;height:100%;display:block}
.card-meta{font-size:13px;color:var(--muted-2)}
.card-price{margin-top:4px;font-size:15px;font-weight:600;font-family:var(--display)}
.card-price small{font-weight:400;color:var(--muted-2);font-family:var(--font);font-size:12.5px;margin-right:4px}
.empty{padding:56px 0;text-align:center;color:var(--muted)}

/* ---------- Filter / Suche ---------- */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:24px}
.search{flex:1;min-width:220px;position:relative}
.search input{width:100%;background:var(--surface);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:11px 14px 11px 38px;font-size:15px;outline:none}
.search input:focus{border-color:var(--accent)}
.search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted-2)}
select.select{background:var(--surface);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:11px 13px;font-size:15px;outline:none}
.chips{display:flex;gap:7px;overflow-x:auto;padding-bottom:6px;margin-bottom:22px}
.chip{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:7px;padding:7px 13px;font-size:14px;cursor:pointer;white-space:nowrap;transition:.15s}
.chip:hover{color:var(--text);border-color:#3a3a42}
.chip.active{background:var(--surface-2);border-color:#4a4a55;color:var(--text)}

/* ---------- Pagination ---------- */
.pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:40px;font-size:15px;color:var(--muted)}
.pagination button{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer;transition:.15s}
.pagination button:hover:not(:disabled){border-color:#4a4a55}

/* ---------- Promo ---------- */
.promo{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:38px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.promo h2{font-size:clamp(22px,2.8vw,30px)}
.promo p{color:var(--muted);margin-top:12px;max-width:48ch;font-size:15px}
.promo-visual{display:grid;gap:1px;background:var(--line-soft);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.promo-row{display:flex;align-items:center;gap:12px;background:var(--bg-2);padding:12px 14px;font-size:14px}
.promo-row span{margin-left:auto;color:var(--muted-2);font-size:13.5px;font-variant-numeric:tabular-nums}

/* ---------- Kursdetail ---------- */
.breadcrumb{font-size:13.5px;color:var(--muted-2);padding:20px 0 0}
.breadcrumb a:hover{color:var(--text)}
.detail{display:grid;grid-template-columns:1fr 360px;gap:48px;align-items:start;padding:26px 0 72px}
.detail-hero-media{border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;margin-bottom:28px;border:1px solid var(--line)}
.detail h1{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px}
.detail .lead{color:var(--muted);font-size:16.5px;max-width:62ch}
.pills{display:flex;gap:7px;flex-wrap:wrap;margin:20px 0 0}
.pill{border:1px solid var(--line);color:var(--muted);border-radius:6px;padding:5px 11px;font-size:13px}
.block{margin-top:44px}
.block h2{font-size:20px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.list-check{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.list-check li{display:flex;gap:11px;color:var(--muted);font-size:15px}
.list-check li::before{content:'';width:14px;height:14px;flex:none;margin-top:5px;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%234D5BE0' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M2.5 8.5l4 4 7-9'/></svg>");background-size:14px;background-repeat:no-repeat}
.curriculum{border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.mod{border-bottom:1px solid var(--line-soft)}
.mod:last-child{border-bottom:0}
.mod-head{width:100%;display:flex;align-items:center;gap:12px;background:transparent;border:0;color:var(--text);padding:14px 17px;cursor:pointer;text-align:left;font-size:15px;font-weight:500}
.mod-head:hover{background:var(--surface)}
.mod-head span{margin-left:auto;color:var(--muted-2);font-size:13px;font-weight:400;white-space:nowrap}
.mod-body{padding:2px 17px 16px;display:none;color:var(--muted);font-size:14.5px}
.mod.open .mod-body{display:block}
.mod-body ul{margin:6px 0 0;padding-left:18px;display:grid;gap:6px}

/* Stufen-Auswahl */
.buybox{position:sticky;top:84px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.buybox h3{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);font-family:var(--font);font-weight:600;margin-bottom:12px}
.tier-list{display:grid;gap:7px}
.tier{position:relative;display:flex;align-items:flex-start;gap:11px;border:1px solid var(--line);border-radius:8px;padding:12px 13px;cursor:pointer;transition:.15s}
.tier:hover{border-color:#3d3d46}
.tier.selected{border-color:var(--accent);background:var(--accent-soft)}
.tier input{position:absolute;opacity:0;pointer-events:none}
.tier .dot{width:16px;height:16px;border-radius:99px;border:1.5px solid var(--line);flex:none;margin-top:3px}
.tier.selected .dot{border-color:var(--accent);background:radial-gradient(circle,var(--accent) 0 45%,transparent 46%)}
.tier b{display:block;font-size:14.5px;font-family:var(--display);font-weight:600}
.tier em{font-style:normal;font-size:12.5px;color:var(--muted-2);display:block;margin-top:1px}
.tier .p{margin-left:auto;font-weight:600;font-family:var(--display);white-space:nowrap;font-size:14.5px}
.tier .tag{margin-left:6px;color:var(--accent);font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-family:var(--font)}
.buybox-total{display:flex;align-items:baseline;justify-content:space-between;margin:18px 0 12px;padding-top:16px;border-top:1px solid var(--line-soft)}
.buybox-total span{color:var(--muted);font-size:14.5px}
.buybox-total strong{font-family:var(--display);font-size:25px;font-weight:600}
.buybox-note{font-size:12.5px;color:var(--muted-2);margin-top:11px;text-align:center;line-height:1.5}
.includes{margin-top:18px;border-top:1px solid var(--line-soft);padding-top:16px}
.includes h4{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);font-family:var(--font);margin-bottom:12px;font-weight:600}
.includes .grp{margin-bottom:12px}
.includes .grp b{font-size:13px;display:block;margin-bottom:5px}
.includes ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.includes li{font-size:13.5px;color:var(--muted);padding-left:15px;position:relative}
.includes li::before{content:'+';position:absolute;left:0;color:var(--muted-2)}

/* ---------- Warenkorb / Kasse ---------- */
.cart-grid{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start;padding:28px 0 72px}
.cart-item{display:flex;gap:16px;align-items:center;border:1px solid var(--line);border-radius:var(--radius-sm);padding:13px;margin-bottom:10px}
.cart-item .thumb{width:104px;aspect-ratio:16/9;border-radius:4px;overflow:hidden;flex:none}
.cart-item b{font-family:var(--display);font-size:15px;font-weight:600}
.cart-item .sub{font-size:13px;color:var(--muted-2)}
.cart-item .p{margin-left:auto;font-weight:600;font-family:var(--display);white-space:nowrap}
.icon-btn{background:none;border:1px solid var(--line);color:var(--muted-2);width:30px;height:30px;border-radius:6px;cursor:pointer;flex:none}
.icon-btn:hover{color:#E05B5B;border-color:#E05B5B}
.summary{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:sticky;top:84px}
.summary h3{font-size:16px;margin-bottom:16px}
.summary .row{display:flex;justify-content:space-between;gap:12px;font-size:14.5px;color:var(--muted);margin-bottom:9px}
.summary .row b{color:var(--text);font-weight:500}
.summary .row.discount{color:var(--ok)}
.summary .row.total{color:var(--text);font-weight:600;font-family:var(--display);font-size:19px;border-top:1px solid var(--line-soft);padding-top:13px;margin-top:13px}
.field{margin-bottom:13px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;background:var(--bg-2);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:10px 12px;font-size:15px;outline:none;font-family:inherit}
.field input:focus,.field textarea:focus{border-color:var(--accent)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.notice{border:1px solid var(--line);border-left:2px solid var(--accent);border-radius:var(--radius-sm);padding:13px 15px;font-size:14px;color:var(--muted);margin-bottom:18px;background:var(--bg-2)}
.coupon{display:flex;gap:8px;margin-top:4px}
.coupon input{flex:1;background:var(--bg-2);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:10px 12px;font-size:15px;outline:none;text-transform:uppercase}
.coupon input:focus{border-color:var(--accent)}
.coupon-msg{font-size:13px;margin-top:8px}
.coupon-msg.ok{color:var(--ok)}
.coupon-msg.err{color:#E05B5B}
.coupon-hint{font-size:12.5px;color:var(--muted-2);margin-top:8px}
.checkout-cols{display:grid;grid-template-columns:1fr 380px;gap:44px;align-items:start;padding:28px 0 72px}
.panel{border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:20px}
.panel h2{font-size:17px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.steps{display:flex;gap:10px;align-items:center;font-size:13.5px;color:var(--muted-2);margin-top:14px}
.steps b{color:var(--text);font-weight:500}
.line-item{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line-soft)}
.line-item:last-child{border-bottom:0}
.line-item .thumb{width:88px;aspect-ratio:16/9;border-radius:4px;overflow:hidden;flex:none}
.line-item b{font-family:var(--display);font-size:15px;font-weight:600;display:block}
.line-item .p{margin-left:auto;font-family:var(--display);font-weight:600;white-space:nowrap}
.line-extras{margin:8px 0 0;padding-left:16px;color:var(--muted);font-size:13px;display:grid;gap:3px}
.success{text-align:center;padding:72px 20px;max-width:620px;margin-inline:auto}
.success .mark{width:52px;height:52px;border-radius:99px;border:1px solid var(--accent);color:var(--accent);display:grid;place-items:center;margin:0 auto 20px;font-size:22px}
.order-table{width:100%;border-collapse:collapse;margin-top:26px;text-align:left;font-size:14.5px}
.order-table th{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);font-weight:600;padding:0 0 8px;border-bottom:1px solid var(--line)}
.order-table td{padding:11px 0;border-bottom:1px solid var(--line-soft);color:var(--muted)}
.order-table td:last-child,.order-table th:last-child{text-align:right}
.order-table tr:last-child td{border-bottom:0}

/* ---------- Kategorieleiste / Footer ---------- */
.catbar{border-top:1px solid var(--line-soft);padding:32px 0}
.catbar h4{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);font-family:var(--font);margin-bottom:14px;font-weight:600}
.catbar-links{display:flex;flex-wrap:wrap;gap:8px 24px}
.catbar-links a{font-size:14.5px;color:var(--muted)}
.catbar-links a:hover{color:var(--text)}
.site-footer{border-top:1px solid var(--line-soft);background:var(--bg-2);padding:48px 0 24px}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:34px}
.footer-cols h5{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);margin:0 0 13px;font-weight:600}
.footer-cols ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-cols a{font-size:14.5px;color:var(--muted)}
.footer-cols a:hover{color:var(--text)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line-soft);font-size:13.5px;color:var(--muted-2)}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,16px);background:var(--surface-2);border:1px solid var(--line);color:var(--text);padding:12px 18px;border-radius:8px;font-size:14.5px;opacity:0;pointer-events:none;transition:.2s;z-index:200}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Rechtstexte ---------- */
.legal{padding:36px 0 72px;max-width:720px}
.legal h1{font-size:32px;margin-bottom:10px}
.legal h2{font-size:19px;margin:40px 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line-soft)}
.legal h3{font-size:15px;margin:22px 0 6px}
.legal p,.legal li{color:var(--muted);font-size:15px}
.legal p{margin-bottom:10px}
.legal ul{padding-left:20px;display:grid;gap:8px}
.legal address{font-style:normal;color:var(--muted);margin-bottom:10px}
.legal .datablock{display:grid;grid-template-columns:auto 1fr;gap:6px 20px;font-size:15px;color:var(--muted);margin:12px 0}
.legal .datablock dt{color:var(--muted-2)}
.legal .datablock dd{margin:0}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .detail,.checkout-cols{grid-template-columns:1fr 320px;gap:32px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .main-nav.open{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--bg-2);border-bottom:1px solid var(--line);padding:16px 24px;gap:14px}
  .burger{display:block}
  .hero-inner{grid-template-columns:1fr;padding:52px 0 44px;gap:34px}
  .detail,.checkout-cols,.cart-grid{grid-template-columns:1fr}
  .buybox,.summary{position:static}
  .promo{grid-template-columns:1fr;padding:26px}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid,.grid-3{grid-template-columns:1fr;gap:14px}
  /* Der Titel steht im Cover — deshalb mobil volle Breite statt Mini-Thumbnail */
  .card-media{margin-bottom:10px}
  .card-body{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
  .card-price{margin-top:0}
  .section{padding:44px 0}
  .field-row{grid-template-columns:1fr}
  .cart-item{flex-wrap:wrap}
  .cart-item .p{margin-left:0}
  .hero-stats div{padding-right:18px;margin-right:18px}
  .header-actions .btn-primary{display:none}
  .logo{font-size:14px}
  .header-inner{gap:12px}
  .container{padding-inline:18px}
}