/***** styles.css - dark-first aesthetic with accessible light theme fallback and fixed header with shadow *****/
:root{
  --bg: #f7f8fa;
  --page-bg: linear-gradient(180deg,#f7f8fa 0%, #eef2f6 100%);
  --card: rgba(255,255,255,0.98);
  --text: #07101a;
  --muted: #475569;
  --accent: #4dd0e1;
  --accent-dark: #0b97a6;
  --glass: rgba(255,255,255,0.6);
  --radius: 12px;
  --container: 1100px;
  --header-h: 70px;
  --section-offset: 90px;
}

html[data-theme="dark"]{
  --bg: #071023;
  --page-bg: linear-gradient(180deg,#071023 0%, #04101a 60%);
  --card: rgba(12,18,28,0.7);
  --text: #eaf6fb;
  --muted: #93a3b8;
  --accent: #4dd0e1;
  --accent-dark: #06b0ba;
  --glass: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;background:var(--page-bg);color:var(--text);font-size:16px;line-height:1.5}
body{padding-top:var(--header-h)}
.container{max-width:var(--container);margin:0 auto;padding:20px}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{left:10px;top:10px;width:auto;height:auto;padding:8px 12px;background:#111;color:#fff;border-radius:6px;z-index:999}
.site-header{border-bottom:1px solid rgba(255,255,255,0.03);background:var(--bg);position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);box-shadow:0 1px 3px rgba(2,6,23,0.06)}
html[data-theme="dark"] .site-header{box-shadow:0 2px 6px rgba(0,0,0,0.2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:56px;height:56px;border-radius:10px;background:linear-gradient(135deg,#06223a,#0b3b4b);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.site-title{font-size:20px;margin:0}
.site-sub{margin:0;color:var(--muted);font-size:13px}
.header-controls{display:flex;gap:12px;align-items:center}
.primary-nav ul{display:flex;gap:12px;list-style:none;margin:0;padding:0}
.primary-nav a{padding:8px 10px;border-radius:8px;color:var(--text);text-decoration:none}
.primary-nav a:focus, .primary-nav a:hover{outline:3px solid rgba(77,208,225,0.12);background:var(--glass)}

.icon-btn{background:transparent;border:1px solid rgba(255,255,255,0.04);padding:8px;border-radius:8px;cursor:pointer;font-size:18px}
.icon-btn:focus{outline:3px solid rgba(77,208,225,0.18)}

.card{background:var(--card);padding:22px;border-radius:var(--radius);border:1px solid rgba(255,255,255,0.03);box-shadow:0 6px 30px rgba(2,6,23,0.6);margin-top:22px}

.hero{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:stretch;}
.hero-content h2{font-size:28px;margin:0 0 8px 0}
.lede{color:var(--muted);margin:0 0 12px 0}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.btn{display:inline-block;padding:10px 14px;border-radius:10px;text-decoration:none;border:1px solid rgba(255,255,255,0.06);font-weight:600;background:transparent;color:var(--text);cursor:pointer}
.btn:focus{outline:3px solid rgba(77,208,225,0.2)}
.btn.primary{background:linear-gradient(90deg,var(--accent),#6666FF);color:#072027;border:none}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.04)}

.contact-card{padding:18px;border-radius:12px;display:flex;flex-direction:column;justify-content:space-between}
.muted{color:var(--muted)}
.phone{font-weight:700}

.contact-row{display:flex;gap:12px;align-items:center;margin:8px 0}
.contact-row .label{width:80px;color:var(--muted);font-weight:600}
.contact-row .value{flex:1}
.contact-row .value a{color:var(--accent)}

.auto-balance{display:flex;flex-direction:column}
.hero{align-items:stretch}
.hero > .auto-balance{align-self:stretch}

.section-anchor{scroll-margin-top:var(--section-offset)}

.service-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.service h4{margin:0 0 6px 0}
.models-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.model{background:transparent;padding:8px;border-radius:8px}
.rates{list-style:none;padding:0;margin:8px 0}
.rates li{padding:6px 0}
.highlights{margin:12px 0 0 0;padding-left:20px}
.skills{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}
.tag{padding:6px 8px;border-radius:8px;background:rgba(255,255,255,0.02);font-size:13px;border:1px solid rgba(255,255,255,0.02)}

.site-footer{padding:18px 0;margin-top:28px;border-top:1px solid rgba(255,255,255,0.03);color:var(--muted)}
a{text-decoration:none;}

@media (max-width:900px){
  .hero{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .models-list{grid-template-columns:1fr}
  .primary-nav{display:none}
  .auto-balance{display:block}
}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto}
}

:focus{outline-offset:3px}