:root{
  --bg:#FFFFF0;
  --ink:#10082c;
  --maxw:1100px;
  --header-h:64px;
  --banner-h:25dvh;
  --gap:clamp(28px,6vh,80px);
  --radius:16px;
  --border:rgba(37,37,37,.12);
  --font-sans:"acumin-pro","aktiv-grotesk","source-sans-pro",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* Base */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; overflow-x:hidden;
  background:var(--bg); color:var(--ink);
  font-family:var(--font-sans); line-height:1.5;
}
@media (prefers-reduced-motion:no-preference){
  body{scroll-behavior:smooth}
}
section{scroll-margin-top:calc(var(--header-h) + 12px)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Header */
.site-header{
  position:fixed; inset:0 0 auto 0; min-height:var(--header-h);
  display:grid; align-items:center; background:rgba(255,255,255,.8);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border); z-index:10;
}
.nav-wrap{
  width:min(100%,var(--maxw)); margin:0 auto; padding:0 16px;
  display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
}
.brand{font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:14px;text-decoration:none;color:var(--ink)}
.site-header nav{display:flex;flex-wrap:wrap;gap:8px}
.site-header nav a{padding:6px 10px;font-size:14px;white-space:nowrap;text-decoration:none;color:var(--ink);font-weight:700;letter-spacing:.04em;border-radius:10px;transition:background .15s}
.site-header nav a:hover,.site-header nav a:focus-visible{background:rgba(37,37,37,.06)}

/* Section title (full-bleed) */
.section-title{
  position:relative; left:50%; transform:translateX(-50%);
  inline-size:100dvw; margin:0; padding:12px 8px;
  text-transform:uppercase; letter-spacing:.08em; font-weight:800;
  font-size:clamp(16px,5.5vw,22px); white-space:nowrap; overflow:hidden;
}

/* Hero */
.hero{min-height:45dvh;display:grid;place-items:center;padding:calc(40px + var(--header-h)) 16px 80px;text-align:center}
.hero h1{margin:0;line-height:.95;letter-spacing:.01em;text-transform:uppercase;font-size:clamp(40px,10vw,120px);font-weight:900;color:#252525;display:flex;flex-direction:column;align-items:center;gap:clamp(4px,1vh,12px)}
.font-note{font-size:12px;opacity:.7;margin-top:10px}

/* Banners */
.banner{position:relative;height:var(--banner-h);min-height:160px;margin-block:var(--gap);overflow:hidden;border-block:1px solid var(--border)}
.banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 25%;display:block;background:#e9e9e9}

/* RULES */
.rules{width:min(100%,var(--maxw));margin:0 auto;padding:0 24px clamp(48px,6vh,84px)}
.rules .section-title{margin:0 0 clamp(24px,5vh,48px)}
.rules ol{margin:0 auto;max-width:68ch;padding-left:1.5rem;line-height:1.8}
.rules li{font-size:clamp(17px,1rem + 0.7vw,22px);font-weight:800;margin:0 0 clamp(12px,2vw,18px)}
.rules li::marker{font-weight:800;font-variant-numeric:tabular-nums}

/* AUCTION */
.auction{padding:0 16px clamp(48px,6vh,96px)}
.auction .card{
  width:min(100%,980px); margin:clamp(24px,5vh,48px) auto 0;
  background:#fff; border:1px solid var(--border); border-radius:24px;
  padding:clamp(20px,4.5vw,32px); display:grid; gap:clamp(16px,3vh,24px)
}
.auction .auction-layout{width:100%;display:grid;gap:clamp(16px,3vw,24px);align-items:start;grid-template-columns:1fr}

.timer{
  border:1px solid var(--border); border-radius:var(--radius); padding:clamp(16px,2.5vw,24px);
  background:#fafafa; display:grid; gap:12px; align-self:start
}
.subhead{margin:0;font-size:clamp(16px,1.6vw,20px);letter-spacing:.08em;text-transform:uppercase;font-weight:700}
.pill{justify-self:start;padding:6px 10px;border-radius:999px;font-weight:700;font-size:13px;border:1px solid var(--border);background:#fff}
.pill.open{border-color:#9ad9b1;background:#eaf7ee;color:#0d4d1f}
.pill.closed{border-color:#e3a1aa;background:#fdecef;color:#5a0b14}

.count{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:clamp(10px,2vw,16px);align-items:center;justify-items:center;padding:6px 0}
.cell{display:grid;gap:6px;text-align:center}
.num{font-variant-numeric:tabular-nums;font-family:var(--font-mono);font-weight:800;font-size:clamp(22px,4.5vw,38px);line-height:1}
.lab{font-size:12px;opacity:.7;letter-spacing:.08em;text-transform:uppercase}

.next,.hint{font-size:14px}
.hint{opacity:.7}

/* Artwork */
.art{width:min(60vmin,460px);position:relative;border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--border);margin-inline:auto}
.art::before{content:"";display:block;padding-top:100%}
.art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}

/* Bid row */
.bid-row{width:min(100%,560px);display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:clamp(24px,5vh,56px)}
.bid-row input{flex:1 1 auto;min-width:0}
.bid-row .price{margin-left:auto;white-space:nowrap;font-weight:700;opacity:.9}
.bid-row.is-locked button{opacity:.6;cursor:not-allowed;pointer-events:none}

/* Inputs & buttons */
input[type="text"]{color:var(--ink);background:#fff;border:1px solid var(--border);width:100%;padding:14px 16px;border-radius:12px;font:inherit;line-height:1.3;transition:border-color .18s,box-shadow .18s}
input[type="text"]::placeholder{color:#0008}
input[type="text"]:focus{outline:2px solid transparent;border-color:#000;box-shadow:0 0 0 4px rgba(0,0,0,.12);outline-offset:2px}
input[type="email"]:focus,input[type="password"]:focus{outline:2px solid transparent;border-color:#000;box-shadow:0 0 0 4px rgba(0,0,0,.12)}

button{padding:22px 36px;border:1px solid var(--ink);background:var(--ink);color:var(--bg);font:inherit;font-weight:900;border-radius:16px;cursor:pointer;text-transform:uppercase;letter-spacing:.06em;transition:transform .14s,box-shadow .2s;box-shadow:0 1px 0 rgba(0,0,0,.18),0 8px 16px rgba(0,0,0,.06)}
button:hover{transform:translateY(-1px);box-shadow:0 2px 0 rgba(0,0,0,.22),0 12px 20px rgba(0,0,0,.08)}
button:disabled{opacity:.6;box-shadow:none;transform:none;cursor:not-allowed}

/* INFO */
.info{background:#1d0831;color:#fff;margin:0 0 clamp(48px,10vh,120px);padding:clamp(32px,6vh,88px) 0;border-block:1px solid rgba(0,0,0,.08)}
.info .section-title{color:#fff;margin:0 0 clamp(24px,5vh,56px)}
.inner{width:min(100%,var(--maxw));margin:0 auto;padding:0 16px;display:grid;row-gap:clamp(18px,2vh,28px);justify-items:center}
.info-grid{width:100%;display:grid;gap:clamp(22px,3vw,40px);align-items:center;justify-items:center;grid-template-columns:1fr}

/* Media */
figure{margin:0;width:100%;border-radius:var(--radius);overflow:hidden}
figure img{display:block;width:100%;height:auto}

/* Footer */
.site-footer{border-top:1px solid var(--border);padding:14px 16px;background:#fff}
.footer-inner{width:min(100%,var(--maxw));margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;opacity:.9}
.ig-link{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink)}

/* Account status & auth modal */
.account-pill{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .7rem;border:1px solid var(--border);border-radius:999px;background:transparent;color:inherit;cursor:pointer}
.account-pill .dot{width:.6rem;height:.6rem;border-radius:50%;background:#999}
.account-pill.is-auth .dot,
.account-pill.has-email .dot{background:#22c55e}
.account-pill .label{font-weight:700;letter-spacing:.04em}

/* Auth modal */
.auth-overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.45);z-index:20}
.auth-overlay.open{display:flex}
.auth-card{position:relative;width:min(92vw,380px);padding:20px;background:#fff;border:1px solid var(--border);border-radius:16px;display:grid;gap:10px}
.auth-card h3{margin:0 0 6px;font-size:18px}
.auth-card label{display:block;font-size:12px;opacity:.75}
.auth-card input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font:inherit}
.auth-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;margin-top:6px}
.auth-close{position:absolute;top:8px;right:10px;width:36px;height:36px;display:grid;place-items:center;background:transparent;border:0;font-size:20px;line-height:1;cursor:pointer;border-radius:8px;color:var(--ink)}
.auth-close:hover{background:rgba(0,0,0,.06)}
.auth-msg{min-height:1.2em;font-size:.9rem}

/* Auth mode switch */
.auth-switch{display:inline-flex;gap:6px;padding:4px;background:#f5f5f5;border:1px solid var(--border);border-radius:999px}
.auth-switch button{border:0;background:transparent;padding:6px 10px;border-radius:999px;font-weight:700;cursor:pointer;color:var(--ink)}
.auth-switch button[aria-selected="true"]{background:#fff;box-shadow:0 1px 0 rgba(0,0,0,.08);color:var(--ink)}

/* Auth forms visibility */
.auth-card[data-mode="login"] #signup-pass2{display:none}
.auth-card[data-mode="login"] #btn-signup-submit{display:none}

/* UX: disable bidding when not authenticated */
.needs-auth input,.needs-auth button{opacity:.5;pointer-events:none}

/* TOP 5 bidders */
.top5{border:1px solid var(--border);border-radius:var(--radius);padding:14px;background:#fff}
.top5 .subhead{margin-bottom:8px}
.top5-list{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.top5-list li{
  display:grid;grid-template-columns:20px 1fr auto;align-items:center;
  gap:10px;padding:8px 10px;border:1px solid var(--border);border-radius:10px;background:#fafafa
}
.top5-list li .rank{font-weight:900;font-variant-numeric:tabular-nums}
.top5-list li .who{font-weight:700;letter-spacing:.02em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.top5-list li .amt{font-weight:900;font-variant-numeric:tabular-nums;white-space:nowrap}
.top5-list li.is-me{outline:2px solid #0002}
.top5-list li.ghost{display:block;text-align:center;opacity:.7;border-style:dashed}

/* Hamburger menu (mobile only) */
.hamburger{display:none;border:0;background:transparent;padding:8px;border-radius:10px;cursor:pointer}
.hamburger span{display:block;width:24px;height:2px;margin:5px 0;background:var(--ink);transition:transform .2s,opacity .2s}

/* Responsive - consolidated media queries */
@media (min-width:900px){
  .auction .auction-layout{grid-template-columns:1.1fr .9fr}
  .info-grid{grid-template-columns:1.1fr .9fr}
  .bid-row .price{flex:0 0 auto}
  .bid-row button{flex:0 0 auto}
}

@media (max-width:820px){
  .nav-wrap{gap:0}
  .hamburger{display:inline-flex;align-items:center;justify-content:center}
  .site-header nav{display:none;width:100%}
  .site-header.nav-open nav{display:flex}
  .site-header nav{flex-direction:column;gap:0;padding-top:8px}
  .site-header nav a,
  .site-header nav .account-pill{
    width:100%;
    justify-content:flex-start;
    border-radius:12px;
    padding:10px 12px;
  }
  .site-header.nav-open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .site-header.nav-open .hamburger span:nth-child(2){opacity:0}
  .site-header.nav-open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* Success modal */
.success-modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.6);z-index:30;animation:fadeIn .2s ease}
.success-modal.show{display:flex}
.success-box{background:#fff;border-radius:20px;padding:40px 32px;max-width:420px;margin:20px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:slideUp .3s ease}
.success-box h3{margin:0 0 16px;font-size:28px;color:#10082c}
.success-box .emoji{font-size:48px;margin-bottom:12px}
.success-box p{margin:0;font-size:16px;line-height:1.6;color:#555}
.success-box button{margin-top:24px;padding:14px 32px}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
@media (prefers-reduced-motion:reduce){
  .success-modal,.success-box{animation:none}
}