/* ============================================================
   TEMBR — design system (S29-01)
   Wzorzec 1:1: docs/design/mockup-ovb/index.html
   Adaptacje pod wielostronicowość:
   - hero: selektor `header` z mockupu -> klasa `.hero`
   - `.grad` globalny (w mockupie scopowany do h1)
   - ścieżki obrazów względem /css/ (../img/ovb/…)
   Fonty (Fraunces + Inter) każda strona ładuje przez Google Fonts
   <link> z preconnect — jak w mockupie.
   ============================================================ */

:root{
  --bg:#0b0d12;
  --bg2:#10131a;
  --panel:#141822;
  --line:rgba(224,169,87,.18);
  --gold:#e0a957;
  --gold-hi:#f2c47f;
  --gold-dim:rgba(224,169,87,.55);
  --ink:#eae6dd;
  --ink-dim:#9a958a;
  --serif:'Fraunces',serif;
  --sans:'Inter',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:300;line-height:1.6;overflow-x:hidden}
::selection{background:var(--gold);color:#0b0d12}

.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.15}
.eyebrow{font-size:12px;letter-spacing:.32em;text-transform:uppercase;color:var(--gold);margin-bottom:20px;font-weight:500}

/* ── NAV ─────────────────────────── */
nav{position:fixed;top:0;left:0;right:0;z-index:50;backdrop-filter:blur(14px);background:rgba(11,13,18,.72);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.logo-name{font-family:var(--serif);font-size:19px;letter-spacing:.14em}
.logo-name b{color:var(--gold);font-weight:600}
.nav-links{display:flex;gap:36px;align-items:center}
.nav-links a{color:var(--ink-dim);text-decoration:none;font-size:14px;transition:color .25s}
.nav-links a:hover{color:var(--gold-hi)}
.btn{display:inline-block;padding:14px 30px;border:1px solid var(--gold);color:var(--gold);text-decoration:none;font-size:13px;letter-spacing:.18em;text-transform:uppercase;font-weight:500;transition:all .3s;background:transparent}
.btn:hover{background:var(--gold);color:#0b0d12}
.btn.solid{background:var(--gold);color:#0b0d12}
.btn.solid:hover{background:var(--gold-hi);border-color:var(--gold-hi)}

/* ── HERO (w mockupie: header) ───── */
.hero{position:relative;min-height:100vh;display:flex;align-items:center}
.hero-img{position:absolute;inset:0;background:url('../img/ovb/hero.webp') center right/cover no-repeat}
.hero-img::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#0b0d12 0%,rgba(11,13,18,.94) 34%,rgba(11,13,18,.55) 62%,rgba(11,13,18,.25) 100%)}
.hero-in{position:relative;z-index:2;padding-top:72px;max-width:640px}
h1{font-size:clamp(42px,5.6vw,72px);letter-spacing:-.01em;margin-bottom:28px}
h1 em{font-style:italic;color:var(--gold-hi)}
.grad{background:linear-gradient(100deg,#f2e6cf 0%,#e0a957 45%,#b0733a 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--ink-dim);max-width:480px;margin-bottom:44px}
.hero-cta{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.hero-note{font-size:13px;color:var(--ink-dim);margin-top:26px;display:flex;align-items:center;gap:10px}
.hero-note .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px var(--gold)}

/* equalizer */
.eq{display:inline-flex;gap:3px;align-items:flex-end;height:18px;margin-right:4px}
.eq i{width:3px;background:var(--gold);animation:eq 1.1s ease-in-out infinite}
.eq i:nth-child(2){animation-delay:.15s}.eq i:nth-child(3){animation-delay:.3s}
.eq i:nth-child(4){animation-delay:.45s}.eq i:nth-child(5){animation-delay:.6s}
@keyframes eq{0%,100%{height:4px}50%{height:18px}}

/* ── STATS ───────────────────────── */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:1px}
.stat{padding:44px 24px;text-align:center;border-left:1px solid var(--line)}
.stat:first-child{border-left:none}
.stat b{display:block;font-family:var(--serif);font-size:36px;font-weight:400;color:var(--gold-hi);margin-bottom:6px}
.stat span{font-size:13px;color:var(--ink-dim);letter-spacing:.08em;text-transform:uppercase}

/* ── SECTIONS ────────────────────── */
section{padding:120px 0}
.sec-head{max-width:560px;margin-bottom:72px}
h2{font-size:clamp(32px,3.6vw,48px);margin-bottom:18px}
.sec-head p{color:var(--ink-dim);font-size:17px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--panel);border:1px solid var(--line);overflow:hidden;transition:transform .35s,border-color .35s}
.card:hover{transform:translateY(-6px);border-color:var(--gold-dim)}
.card-img{height:260px;overflow:hidden;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;object-position:center 20%;transition:transform .6s}
.card:hover .card-img img{transform:scale(1.05)}
.card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,var(--panel) 100%)}
.card-body{padding:10px 30px 34px}
.card h3{font-size:24px;margin-bottom:12px}
.card p{color:var(--ink-dim);font-size:15px}
.card a{display:inline-block;margin-top:20px;color:var(--gold);text-decoration:none;font-size:13px;letter-spacing:.2em;text-transform:uppercase}
.card a:hover{color:var(--gold-hi)}

/* ── PLAYER / FEATURES ───────────── */
.feat{background:url('../img/ovb/texture.webp') center/cover no-repeat;position:relative}
.feat::before{content:'';position:absolute;inset:0;background:rgba(11,13,18,.82)}
.feat .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.player{background:rgba(20,24,34,.9);border:1px solid var(--line);padding:38px;backdrop-filter:blur(8px)}
.player .title{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.player .title b{font-family:var(--serif);font-weight:400;font-size:20px}
.player .title span{font-size:12px;color:var(--ink-dim)}
.player .author{font-size:13px;color:var(--gold);letter-spacing:.12em;text-transform:uppercase;margin-bottom:28px}
.wave{display:flex;align-items:center;gap:2px;height:56px;margin-bottom:24px}
.wave i{flex:1;background:rgba(234,230,221,.16);border-radius:1px}
.wave i.on{background:var(--gold)}
.p-controls{display:flex;align-items:center;gap:22px}
.play{width:52px;height:52px;border-radius:50%;background:var(--gold);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .3s;flex-shrink:0}
.play:hover{background:var(--gold-hi)}
.play svg{margin-left:3px}
.p-time{font-size:13px;color:var(--ink-dim);font-variant-numeric:tabular-nums}
.feat-list{list-style:none}
.feat-list li{padding:22px 0;border-bottom:1px solid var(--line);display:flex;gap:18px;align-items:flex-start}
.feat-list li:last-child{border-bottom:none}
.feat-list svg{flex-shrink:0;margin-top:4px}
.feat-list b{display:block;font-weight:500;font-size:16px;margin-bottom:4px}
.feat-list span{color:var(--ink-dim);font-size:14px}

/* ── PRICING / TIERS ─────────────── */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch}
.tier{background:var(--panel);border:1px solid var(--line);padding:44px 38px;display:flex;flex-direction:column;transition:border-color .35s}
.tier:hover{border-color:var(--gold-dim)}
.tier.hot{border-color:var(--gold);position:relative}
.tier.hot::before{content:'Najczęściej wybierany';position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--gold);color:#0b0d12;font-size:11px;letter-spacing:.18em;text-transform:uppercase;font-weight:600;padding:5px 16px;white-space:nowrap}
.tier h3{font-size:22px;margin-bottom:6px}
.tier .for{font-size:13px;color:var(--ink-dim);margin-bottom:26px}
.price{font-family:var(--serif);font-size:44px;color:var(--gold-hi);margin-bottom:4px}
.price small{font-size:15px;color:var(--ink-dim);font-family:var(--sans)}
.tier ul{list-style:none;margin:28px 0 36px;flex:1}
.tier li{padding:9px 0;font-size:14px;color:var(--ink-dim);display:flex;gap:10px}
.tier li::before{content:'—';color:var(--gold)}
.tier .btn{text-align:center}

/* ── CTA / FOOTER ────────────────── */
.cta{text-align:center;background:var(--bg2);border-top:1px solid var(--line)}
.cta h2{max-width:720px;margin:0 auto 20px}
.cta p{color:var(--ink-dim);margin-bottom:44px}
footer{border-top:1px solid var(--line);padding:44px 0;font-size:13px;color:var(--ink-dim)}
.foot-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.foot-in a{color:var(--ink-dim);text-decoration:none;margin-left:24px}
.foot-in a:hover{color:var(--gold)}

/* reveal on scroll */
.rv{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}

/* ── MOBILE ── */
.burger{display:none;flex-direction:column;gap:5px;padding:10px;background:none;border:none;cursor:pointer}
.burger i{display:block;width:22px;height:2px;background:var(--gold);transition:.3s}
.burger.x i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.x i:nth-child(2){opacity:0}
.burger.x i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:900px){
  .burger{display:flex}
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(11,13,18,.97);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:6px 0 22px}
  .nav-links.open{display:flex}
  .nav-links a{padding:15px 28px;font-size:16px}
  .nav-links .btn{margin:12px 28px 0;text-align:center}
  .hero{min-height:92svh}
  .hero-in{padding-top:110px}
  .hero-img{background-position:72% center}
  .hero-img::after{background:linear-gradient(180deg,rgba(11,13,18,.5) 0%,rgba(11,13,18,.72) 50%,#0b0d12 100%)}
  h1{font-size:clamp(38px,11vw,52px)}
  .lead{font-size:16px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{text-align:center}
  .wrap{padding:0 20px}
  section{padding:72px 0}
  .sec-head{margin-bottom:44px}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .stat{padding:28px 12px}
  .stat:nth-child(3){border-left:none}
  .stat b{font-size:28px}
  .cards,.tiers{grid-template-columns:1fr}
  .card-img{height:200px}
  .feat .wrap{grid-template-columns:1fr;gap:44px}
  .player{padding:26px}
  .tier.hot{margin-top:10px}
  .foot-in{flex-direction:column;align-items:flex-start}
  .foot-in a{margin-left:0;margin-right:22px}
}