/* Boutique Amp Builders — Vintage Tolex & Silk-Screen Faceplate
   Single stylesheet, no build tools, no external libraries. */

:root{
  --bg:#f5edda;          /* paper cream */
  --card:#fdf8ec;        /* chassis cream */
  --panel:#24201c;       /* dark vintage tolex (header, footer, control plates) */
  --panel-2:#1a1714;     /* deeper tolex band */
  --ink:#2b2019;         /* body text */
  --mut:#6b5b47;         /* muted text */
  --link:#1f6638;        /* tube-chassis green */
  --amber:#d96b28;       /* accent amber */
  --amber-deep:#b95a1f;
  --gold:#c8a858;        /* brass faceplate gold */
  --led:#c92a2a;         /* jewel indicator red */
  --line:#d8cdb4;        /* hairline borders */
  --cream:#f5edda;       /* text on tolex */
  --cream-mut:#cbbc9f;
  --focus:#1f6638;
  --shadow:0 2px 0 rgba(43,33,24,.28), 0 10px 24px -18px rgba(43,33,24,.55);
  --r-chassis:12px; --r-chip:4px;
}

@media (prefers-color-scheme:dark){
  :root{
    --bg:#1e1a17; --card:#29231f; --panel:#29231f; --panel-2:#171412;
    --ink:#eee3cd; --mut:#a08a71; --link:#8fae97; --amber:#e0874f;
    --amber-deep:#c47a3e; --line:#453728;
    --cream:#f2e7d0; --cream-mut:#b6a98d; --focus:#e0874f;
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Work Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  margin:0;background:var(--bg);color:var(--ink);line-height:1.55;font-size:1rem;
  -webkit-text-size-adjust:100%}
main{max-width:62rem;margin:0 auto;padding:0 1rem 2rem}
img{max-width:100%;height:auto}

/* ---------- header ---------- */
.topbar{background:var(--panel);color:var(--cream)}
.topbar-in{max-width:62rem;margin:0 auto;padding:.65rem 1rem;display:flex;gap:1rem;
  align-items:center;flex-wrap:wrap}
.wordmark{font-family:"Righteous","Work Sans",system-ui,sans-serif;font-size:1.15rem;
  color:var(--cream);text-decoration:none;letter-spacing:.02em;display:flex;align-items:center;gap:.5rem}
.wordmark svg,.wordmark img{width:26px;height:26px;flex:none}
.wordmark:hover{color:var(--amber)}
.topnav{margin-left:auto;display:flex;gap:.25rem;flex-wrap:wrap}
.topnav a{color:var(--cream);text-decoration:none;padding:.4rem .6rem;border-radius:var(--r-chip);
  font-weight:600;font-size:.92rem}
.topnav a:hover{color:var(--amber)}
.topnav a[aria-current="page"]{background:rgba(245,237,218,.12)}

.skip{position:absolute;left:-9999px;top:0;background:var(--amber);color:var(--panel-2);
  padding:.5rem .8rem;z-index:99;border-radius:0 0 var(--r-chip) 0;font-weight:700;text-decoration:none}
.skip:focus{left:0}

/* ---------- typography ---------- */
h1,h2{font-family:"Righteous","Work Sans",system-ui,sans-serif;font-weight:400;line-height:1.15;
  letter-spacing:.01em}
h1{font-size:2.1rem;margin:.4rem 0 .6rem}
h2{font-size:1.35rem;margin:2rem 0 .6rem}
h3{font-size:1rem;margin:.1rem 0}
p,li{max-width:42rem}
a{color:var(--link);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--amber-deep)}
:focus{outline:3px solid var(--focus);outline-offset:2px}
a:focus,button:focus,input:focus,select:focus{outline:3px solid var(--focus);outline-offset:2px}
.mut{color:var(--mut);font-size:.85rem}
.lede{font-size:1.05rem;color:var(--ink);max-width:38rem}

/* ---------- hero ---------- */
.hero{display:flex;gap:1.25rem;align-items:flex-end;padding:1.6rem 0 1rem;border-bottom:3px solid var(--panel)}
.hero-art{flex:none;display:flex;align-items:center;gap:.5rem}
.hero-art svg{width:68px;height:42px}
.hero h1{margin:0}
.hero .lede{margin:.5rem 0 1rem}
.count-flip{color:var(--link);font-family:"Righteous","Work Sans",sans-serif}

/* ---------- search & filter control plate ---------- */
.panel{background:var(--card);border:1.5px solid var(--line);border-radius:var(--r-chassis);
  padding:1rem;margin:1.25rem 0 1rem;box-shadow:var(--shadow);position:relative}
.panel[role="search"] label{font-weight:700;font-size:.78rem;text-transform:uppercase;
  letter-spacing:.07em;color:var(--mut)}
.controls{display:grid;grid-template-columns:2fr 1fr 1fr;gap:.65rem .9rem;align-items:end}
.controls .field{display:block}
.controls .field[hidden]{display:none}

/* ---------- inputs ---------- */
label{display:block;margin:.5rem 0 .15rem;font-weight:600}
input,select{padding:.5rem .55rem;font-size:1rem;font-family:inherit;width:100%;max-width:22rem;
  border:1.5px solid var(--panel);border-radius:var(--r-chip);background:var(--card);color:var(--ink)}
.controls input,.controls select{max-width:none}
.form-grid input,.form-grid select{max-width:none}
textarea{background:var(--card);color:var(--ink);border:1.5px solid var(--panel);border-radius:var(--r-chip);
  padding:.5rem;font-family:inherit;font-size:1rem}
::placeholder{color:var(--mut);opacity:1}

/* ---------- buttons ---------- */
button{font-family:inherit;font-weight:700;font-size:1rem;letter-spacing:.02em;
  padding:.6rem 1.15rem;border-radius:var(--r-chip);border:2px solid var(--panel-2);
  background:var(--amber);color:var(--panel-2);cursor:pointer;box-shadow:0 3px 0 var(--panel-2)}
button:hover{transform:translateY(1px);box-shadow:0 2px 0 var(--panel-2)}
button:active{transform:translateY(3px);box-shadow:0 0 0 var(--panel-2)}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid var(--focus);outline-offset:2px}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(17rem,1fr));gap:1rem;
  list-style:none;padding:0}
.card{background:var(--card);border:1.5px solid var(--line);border-radius:var(--r-chassis);
  padding:.85rem .95rem;display:flex;gap:.75rem;align-items:flex-start;box-shadow:0 2px 0 rgba(43,33,24,.18);
  min-width:0}
.card>.amp-info{min-width:0;overflow-wrap:anywhere}
.card:hover{border-color:var(--mut);transform:translateY(-2px);transition:transform .12s ease}
.card .badge-art{flex:none;width:58px}
.card h3{margin:0 0 .15rem}
.card h3 a{text-decoration:none}
.card h3 a:hover{text-decoration:underline}
.card .loc{margin:0 0 .2rem;color:var(--mut);font-size:.82rem}
.card .types{margin:.15rem 0 .3rem}
.card .links{margin:.2rem 0 0;font-size:.85rem}
.card .price{margin:.05rem 0 .35rem;font-weight:700;color:var(--link);font-size:.9rem}

/* ---------- tags & specs ---------- */
.tag{display:inline-block;background:var(--panel);color:var(--cream);border-radius:var(--r-chip);
  padding:.15rem .45rem;margin:.15rem .3rem .15rem 0;font-size:.72rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.06em}
.tag-hi{background:var(--link);color:var(--card)}
.tag-gold{background:var(--gold);color:#1a1714}
dt .tag{margin:.1rem .3rem .35rem 0}
dd{margin:0 0 .7rem}
dl.grid{display:grid;grid-template-columns:max-content 1fr;gap:.35rem 1rem;margin:1rem 0}
dl.grid dt{font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;
  color:var(--mut);padding-top:.2rem}
dl.grid dd{margin:0}

/* ---------- builder detail page ---------- */
.bp{display:flex;gap:1.25rem;align-items:flex-start;padding:1.5rem 0 .8rem;
  border-bottom:3px solid var(--panel)}
.bp .badge-big{flex:none;width:110px}
.bp h1{margin:0}
.bp .mut-line{margin:.55rem 0 0}
.notice{margin:1rem 0;padding:.7rem .9rem;border:1.5px solid var(--mut);border-radius:var(--r-chip);background:rgba(0,0,0,.04)}
.crumb{margin:1.2rem 0 0;font-size:.92rem}
.crumb a{text-decoration:none;font-weight:600}

/* ---------- forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:.1rem 1.4rem}
.form-grid .fg-full{grid-column:1/-1}
.form-grid label{margin-top:.7rem}
.fg-note{font-size:.8rem;color:var(--mut);margin:.95rem 0 0}
.form-plate{max-width:42rem}
.consent{display:flex;gap:.45rem;align-items:center;margin-top:1rem}
.consent input{width:auto;max-width:none}
.consent label{margin:0;font-weight:600}
.hp{position:absolute;left:-9999px}

/* ---------- listings ---------- */
.forsale{margin:1.5rem 0}
.forsale ul{list-style:none;padding:0;margin:.5rem 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.75rem}
.forsale a{display:flex;flex-direction:column;gap:.3rem;text-decoration:none;color:inherit;background:var(--card);border:1.5px solid var(--line);border-radius:8px;padding:.5rem;height:100%}
.forsale a:hover,.forsale a:focus-visible{border-color:var(--amber)}
.forsale img{width:100%;height:auto;aspect-ratio:1;object-fit:cover;border-radius:4px}
.forsale .lt{font-size:.85rem;line-height:1.25}
.forsale .lp{font-weight:700;font-size:.9rem}

/* ---------- hubs ---------- */
.hub{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.6rem}
.hub li{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:.6rem .8rem;overflow-wrap:anywhere}
.hubs{margin:2rem 0}.hubs p{line-height:2}
.model-list{margin:0;padding-left:1.1rem;columns:2 12rem;column-gap:1.5rem}
.model-list li{break-inside:avoid;overflow-wrap:anywhere}

/* ---------- footer ---------- */
footer{background:var(--panel-2);color:var(--cream-mut);margin-top:3rem}
.foot-in{max-width:62rem;margin:0 auto;padding:1.4rem 1rem 2rem;display:flex;gap:1.2rem;
  align-items:flex-start;flex-wrap:wrap}
.foot-in .foot-brand{display:flex;gap:.7rem;align-items:center}
.foot-in .foot-brand span{font-family:"Righteous","Work Sans",sans-serif;font-size:1.02rem;color:var(--cream)}
.foot-meta{margin:.6rem 0 0;font-size:.9rem}
.foot-nav{display:flex;gap:1rem;flex-wrap:wrap}
.foot-nav a{color:var(--cream);text-decoration:none;font-weight:600;font-size:.92rem;
  border-bottom:2px solid transparent}
.foot-nav a:hover{color:var(--amber);border-bottom-color:var(--amber)}

/* ---------- 404 ---------- */
.big-404{font-family:"Righteous","Work Sans",sans-serif;font-size:6rem;line-height:1;color:var(--amber);
  margin:2.5rem 0 .5rem;text-shadow:4px 4px 0 var(--panel)}

@media (max-width:760px){
  .controls{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .hero{flex-direction:column;align-items:flex-start;gap:.8rem}
  h1{font-size:1.7rem}
  .big-404{font-size:4.2rem}
  .bp{flex-direction:column}
}