/* kupujeplyty.pl - stylesheet */
:root{
  --bg:#0f1117;
  --bg-soft:#171a23;
  --surface:#ffffff;
  --surface-2:#f6f4ef;
  --ink:#171a23;
  --ink-soft:#3a3f4b;
  --muted:#6b7280;
  --line:#e5e2d8;
  --brand:#6d28d9;
  --brand-2:#ef4444;
  --brand-3:#f59e0b;
  --accent:#0ea5e9;
  --radius:14px;
  --radius-sm:8px;
  --shadow:0 10px 30px rgba(20,15,40,.08);
  --shadow-strong:0 18px 50px rgba(20,15,40,.18);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color:var(--ink);
  background:var(--surface-2);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .15s}
a:hover{color:var(--brand-2);text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 22px}

/* nav */
.topbar{
  background:var(--bg);
  color:#fff;
  padding:14px 0;
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid rgba(255,255,255,.06)
}
.topbar .row{display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:.3px}
.brand:hover{color:#fff;text-decoration:none}
.brand .logo{width:38px;height:38px}
.brand span{font-size:1.05rem}
.brand small{display:block;font-weight:500;color:#a5a8b3;font-size:.72rem;letter-spacing:1px;text-transform:uppercase}
.nav{display:flex;gap:18px;flex-wrap:wrap}
.nav a{color:#d7d9e0;font-size:.92rem}
.nav a:hover{color:#fff;text-decoration:none}

/* hero */
.hero{
  background:linear-gradient(135deg,#171a23 0%,#231a3b 60%,#3b1e4a 100%);
  color:#fff;
  padding:64px 0 80px;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:auto -10% -40% auto;width:520px;height:520px;
  background:radial-gradient(circle at 30% 30%,#6d28d9 0%,transparent 60%);
  filter:blur(40px);opacity:.55;pointer-events:none
}
.hero::after{
  content:"";position:absolute;left:-120px;top:-120px;width:380px;height:380px;
  background:radial-gradient(circle at 50% 50%,#0ea5e9 0%,transparent 65%);
  filter:blur(50px);opacity:.4;pointer-events:none
}
.hero .row{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(1.9rem,3.4vw,2.8rem);line-height:1.15;margin:.4em 0;letter-spacing:-.5px}
.hero .lead{font-size:1.08rem;color:#d6d4e4;max-width:54ch}
.eyebrow{display:inline-block;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.08);color:#c7c2dc;font-size:.78rem;letter-spacing:.5px;text-transform:uppercase;border:1px solid rgba(255,255,255,.12)}
.btns{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 18px;border-radius:10px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#7c3aed;color:#fff;text-decoration:none}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.25)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none}

/* generic section */
section{padding:56px 0}
section.alt{background:#fff}
section h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin:.2em 0 .5em;letter-spacing:-.3px}
section h3{font-size:1.18rem;margin:1.4em 0 .4em}
section p{color:var(--ink-soft);margin:.6em 0}
.section-head{max-width:780px;margin-bottom:24px}
.section-head .eyebrow{background:#f1ebff;border-color:#e2d5ff;color:#5b21b6}

/* grid cards */
.grid{display:grid;gap:18px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);transition:transform .15s, box-shadow .15s;
  display:flex;flex-direction:column;gap:10px;height:100%
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-strong)}
.card h3{margin:0;font-size:1.05rem}
.card p{margin:0;color:var(--ink-soft);font-size:.95rem}
.card .ico{width:48px;height:48px;border-radius:12px;background:#f1ebff;display:grid;place-items:center;color:var(--brand)}
.card .ico.amber{background:#fff4d6;color:#a16207}
.card .ico.red{background:#ffe1e1;color:#b91c1c}
.card .ico.cyan{background:#dff5ff;color:#0369a1}
.card .ico.green{background:#dcfce7;color:#166534}

/* split content */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.split.reverse{grid-template-columns:.95fr 1.05fr}
.split .visual{background:linear-gradient(135deg,#fff7e6,#f1ebff);border-radius:var(--radius);padding:30px;border:1px solid var(--line)}
.split.dark .visual{background:linear-gradient(135deg,#1f2330,#2a1c45);border:1px solid #2c2640}

/* tables */
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem}
th{background:#fbf9f4;font-weight:700;color:var(--ink)}
tr:last-child td{border-bottom:none}
td.ok{color:#166534;font-weight:600}
td.no{color:#b91c1c;font-weight:600}

/* lists */
ul.bullets{padding-left:0;list-style:none}
ul.bullets li{position:relative;padding-left:28px;margin:8px 0;color:var(--ink-soft)}
ul.bullets li::before{
  content:"";position:absolute;left:0;top:.6em;width:12px;height:12px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--accent))
}

/* faq */
.faq{display:flex;flex-direction:column;gap:10px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 18px}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink)}
.faq details[open]{box-shadow:var(--shadow)}
.faq details p{margin-top:10px;color:var(--ink-soft)}

/* callout */
.callout{
  background:linear-gradient(135deg,#f1ebff,#fff7e6);
  border:1px solid #e2d5ff;border-radius:var(--radius);padding:22px 24px;
  display:flex;gap:18px;align-items:flex-start
}
.callout .ico{flex:0 0 auto;width:48px;height:48px;background:#fff;border-radius:12px;display:grid;place-items:center;color:var(--brand);border:1px solid #e2d5ff}
.callout h3{margin:0 0 6px}
.callout p{margin:0;color:var(--ink-soft)}
.callout.dark{background:linear-gradient(135deg,#1f2330,#2a1c45);border-color:#2c2640;color:#fff}
.callout.dark .ico{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.15);color:#fff}
.callout.dark p{color:#cfcadd}

/* summary box */
.tldr{
  background:#fffbeb;border-left:4px solid var(--brand-3);
  padding:16px 18px;border-radius:var(--radius-sm);
  color:#5f3a08;margin:18px 0 26px
}
.tldr strong{color:#7a4407}

/* badge */
.badge{display:inline-block;font-size:.74rem;padding:3px 8px;border-radius:999px;background:#f1ebff;color:#5b21b6;font-weight:600;letter-spacing:.4px;text-transform:uppercase}

/* breadcrumbs */
.crumbs{padding:14px 0;color:var(--muted);font-size:.88rem}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}

/* footer */
footer{background:#0f1117;color:#cfd0d8;padding:50px 0 28px;margin-top:40px}
footer h4{color:#fff;margin:0 0 12px;font-size:.95rem;letter-spacing:.4px;text-transform:uppercase}
footer ul{list-style:none;padding:0;margin:0}
footer ul li{margin:6px 0}
footer a{color:#b9bcc7}
footer a:hover{color:#fff;text-decoration:none}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.fineprint{border-top:1px solid rgba(255,255,255,.08);margin-top:30px;padding-top:20px;color:#8b8d96;font-size:.85rem;text-align:center}

/* responsive */
@media (max-width: 920px){
  .hero .row{grid-template-columns:1fr;gap:24px}
  .grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .split,.split.reverse{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 540px){
  section{padding:42px 0}
  .hero{padding:46px 0 60px}
  .grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .nav{gap:10px}
  .nav a{font-size:.85rem}
}