*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f1117;--bg2:#181b25;--bg3:#1f2333;--text:#e2e4ed;--text2:#9ba1b5;--accent:#f59e0b;--accent2:#d97706;--accent-bg:rgba(245,158,11,.1);--red:#ef4444;--red-bg:rgba(239,68,68,.1);--green:#22c55e;--green-bg:rgba(34,197,94,.1);--border:#2a2e3d;--radius:12px;--radius-sm:8px;--shadow:0 4px 24px rgba(0,0,0,.3);--font:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
/* Header */
.site-header{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px}
.logo{display:flex;align-items:center;gap:8px;font-size:1.15rem;font-weight:700;color:var(--text)}
.logo:hover{text-decoration:none}
.logo-accent{color:var(--accent)}
.site-nav{display:flex;gap:4px;flex-wrap:wrap}
.site-nav a{padding:6px 12px;border-radius:var(--radius-sm);color:var(--text2);font-size:.875rem;font-weight:500}
.site-nav a:hover{color:var(--text);background:var(--bg3);text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:var(--radius-sm);font-size:1.2rem;cursor:pointer}
@media(max-width:768px){
.site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg2);border-bottom:1px solid var(--border);flex-direction:column;padding:12px 20px}
.site-nav.open{display:flex}
.nav-toggle{display:block}
}
/* Hero */
.hero{padding:80px 0 60px;text-align:center;background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px;background:linear-gradient(135deg,var(--text) 0%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.1rem;color:var(--text2);max-width:600px;margin:0 auto 24px}
.hero-note{font-size:.8rem;color:var(--text2);margin-top:12px;opacity:.7}
/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:all .15s}
.btn-primary{background:var(--accent);color:#000}
.btn-primary:hover{background:var(--accent2);text-decoration:none}
.btn-ghost{background:var(--bg3);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--border)}
.btn-sm{padding:6px 12px;font-size:.8rem}
.btn-danger{background:var(--red-bg);color:var(--red);border:1px solid rgba(239,68,68,.3)}
.btn-danger:hover{background:rgba(239,68,68,.2)}
.btn:disabled{opacity:.4;cursor:not-allowed}
/* Sections */
section{padding:60px 0}
section h2{font-size:1.6rem;font-weight:700;margin-bottom:8px}
section h2 + p{color:var(--text2);margin-bottom:32px;max-width:680px}
/* Matcher */
.section-matcher{background:var(--bg2)}
.matcher-layout{display:grid;grid-template-columns:380px 1fr;gap:32px;align-items:start}
@media(max-width:900px){. matcher-layout{grid-template-columns:1fr}}
.matcher-inputs{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.matcher-inputs h2{margin-bottom:20px}
.input-group{margin-bottom:16px}
.input-group label{display:block;font-size:.8rem;font-weight:600;color:var(--text2);margin-bottom:4px;text-transform:uppercase;letter-spacing:.5px}
.input-group input,.input-group select{width:100%;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.9rem;appearance:auto}
.input-group input:focus,.input-group select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}
.input-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
@media(max-width:500px){.input-row{grid-template-columns:1fr}}
.matcher-inputs .btn-primary{width:100%;margin-top:8px;justify-content:center}
.matcher-inputs .btn-ghost{width:100%;margin-top:8px;justify-content:center}
.matcher-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.matcher-results{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:24px;min-height:300px}
.results-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;min-height:250px;color:var(--text2);text-align:center;gap:12px}
/* Result cards */
.result-power{margin-bottom:20px;padding:16px;background:var(--bg);border-radius:var(--radius-sm);border:1px solid var(--border)}
.result-power h3{font-size:1rem;margin-bottom:8px;color:var(--accent)}
.result-power .power-value{font-size:1.4rem;font-weight:700;margin-bottom:4px}
.result-power .power-detail{font-size:.85rem;color:var(--text2)}
.result-warnings{margin-bottom:20px}
.warning{background:var(--red-bg);border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-sm);padding:12px;margin-bottom:8px;font-size:.85rem;color:var(--red)}
.warning-title{font-weight:600;margin-bottom:2px}
.amp-tier{margin-bottom:20px}
.amp-tier h3{font-size:1rem;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.tier-badge{font-size:.7rem;padding:2px 8px;border-radius:20px;font-weight:700;text-transform:uppercase}
.tier-budget{background:var(--green-bg);color:var(--green)}
.tier-mid{background:var(--accent-bg);color:var(--accent)}
.tier-high{background:rgba(168,85,247,.15);color:#a855f7}
.amp-list{display:flex;flex-direction:column;gap:8px}
.amp-card{display:flex;justify-content:space-between;align-items:center;padding:12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm)}
.amp-card.amp-match{border-color:var(--green);background:rgba(34,197,94,.05)}
.amp-card.amp-warn{border-color:var(--accent)}
.amp-card.amp-fail{border-color:var(--red);opacity:.6}
.amp-name{font-weight:600;font-size:.9rem}
.amp-specs{font-size:.8rem;color:var(--text2)}
.amp-status{font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:20px}
.status-match{background:var(--green-bg);color:var(--green)}
.status-warn{background:var(--accent-bg);color:var(--accent)}
.status-fail{background:var(--red-bg);color:var(--red)}
/* Headphone database */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.filter-btn{padding:6px 14px;border-radius:20px;border:1px solid var(--border);background:var(--bg3);color:var(--text2);font-size:.8rem;cursor:pointer;transition:all .15s}
.filter-btn:hover,.filter-btn.active{background:var(--accent);color:#000;border-color:var(--accent)}
.hp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.hp-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;transition:all .15s}
.hp-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.hp-card h3{font-size:.95rem;font-weight:600;margin-bottom:4px}
.hp-card .hp-specs{font-size:.8rem;color:var(--text2);margin-bottom:8px}
.hp-card .hp-tag{display:inline-block;font-size:.7rem;padding:2px 8px;border-radius:20px;background:var(--bg);color:var(--text2);margin-right:4px}
.hp-card .hp-tag.tag-planar{background:rgba(168,85,247,.15);color:#a855f7}
.hp-card .hp-tag.tag-high{background:var(--accent-bg);color:var(--accent)}
/* Symptoms */
.section-symptoms{background:var(--bg2)}
.symptom-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.symptom-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative}
.symptom-card h3{font-size:.95rem;font-weight:600;margin-bottom:8px}
.symptom-card p{font-size:.85rem;color:var(--text2);margin-bottom:12px}
.symptom-tag{display:inline-block;font-size:.7rem;padding:3px 10px;border-radius:20px;font-weight:600}
.symptom-bad .symptom-tag{background:var(--red-bg);color:var(--red)}
.symptom-good .symptom-tag{background:var(--green-bg);color:var(--green)}
.symptom-good{border-color:rgba(34,197,94,.3)}
/* Learn */
.learn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
.learn-block{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.learn-block h3{font-size:1rem;font-weight:600;margin-bottom:12px;color:var(--accent)}
.learn-block p{font-size:.875rem;color:var(--text2);margin-bottom:8px}
/* Reference table */
.section-reference{background:var(--bg2)}
.ref-table-wrap{overflow-x:auto;margin-bottom:20px;border-radius:var(--radius);border:1px solid var(--border)}
.ref-table{width:100%;border-collapse:collapse;font-size:.85rem}
.ref-table th{background:var(--bg3);padding:12px 16px;text-align:left;font-weight:600;color:var(--accent);border-bottom:1px solid var(--border);white-space:nowrap}
.ref-table td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text2)}
.ref-table tr:last-child td{border-bottom:none}
.ref-table tr:hover td{background:var(--bg3)}
/* Saved */
.saved-list{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}
.saved-empty{color:var(--text2);font-style:italic}
.saved-card{display:flex;justify-content:space-between;align-items:center;padding:16px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm)}
.saved-card .saved-name{font-weight:600;font-size:.9rem}
.saved-card .saved-specs{font-size:.8rem;color:var(--text2)}
.saved-card .saved-date{font-size:.75rem;color:var(--text2)}
.saved-card .saved-actions{display:flex;gap:6px}
/* Footer */
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-bottom:24px}
.footer-grid strong{display:block;margin-bottom:8px;font-size:.85rem;color:var(--text)}
.footer-grid a,.footer-grid p{display:block;font-size:.8rem;color:var(--text2);margin-bottom:4px}
.footer-note{font-size:.75rem;color:var(--text2);opacity:.6;text-align:center;padding-top:20px;border-top:1px solid var(--border)}
/* Print */
@media print{
.site-header,.site-footer,.section-headphones,.section-symptoms,.section-saved,.site-nav,.nav-toggle,.btn,.filter-bar,.matcher-actions,.hero-note,.hero .btn,#reference,.section-learn{display:none!important}
body{background:#fff;color:#000}
.matcher-inputs,.matcher-results{border:1px solid #ccc;background:#fff}
section{padding:20px 0}
.result-power{border:1px solid #ccc}
}
/* Toast */
.toast{position:fixed;bottom:24px;right:24px;background:var(--accent);color:#000;padding:12px 20px;border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;z-index:1000;box-shadow:var(--shadow);animation:fadeIn .3s}
.toast.hide{animation:fadeOut .3s forwards}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeOut{from{opacity:1}to{opacity:0}}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}