/* Ô Tô Cũ Bình Dương — otocubinhduong.com */
:root{
  --bg:#FAF8F3; --surface:#FFFFFF; --ink:#1E2A2F; --ink-soft:#4C5A60;
  --primary:#0F5C54; --primary-dark:#0B4640; --primary-tint:#E3EFED;
  --accent:#D97706; --accent-dark:#B45309; --zalo:#0068FF;
  --line:#E7E2D8; --radius:14px;
  --shadow:0 2px 12px rgba(30,42,47,.07);
  --font-display:"Bricolage Grotesque",sans-serif;
  --font-body:"Be Vietnam Pro",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);font-size:16px;line-height:1.65;color:var(--ink);background:var(--bg)}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
h1,h2,h3{font-family:var(--font-display);line-height:1.25;color:var(--ink)}
h1{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:700}
h2{font-size:clamp(1.35rem,3vw,1.8rem);font-weight:600;margin-bottom:.75rem}
h3{font-size:1.1rem;font-weight:600}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logo{font-family:var(--font-display);font-weight:700;font-size:1.2rem;color:var(--ink);display:flex;align-items:center;gap:8px}
.logo svg{flex:none}
.logo span{color:var(--primary)}
.nav{display:flex;gap:22px;align-items:center}
.nav a{color:var(--ink-soft);font-weight:500;font-size:.95rem;padding:6px 0}
.nav a:hover,.nav a.active{color:var(--primary)}
.btn-call{background:var(--primary);color:#fff !important;padding:10px 18px;border-radius:999px;font-weight:600;font-size:.95rem;display:inline-flex;align-items:center;gap:8px;min-height:44px}
.btn-call:hover{background:var(--primary-dark)}
.menu-toggle{display:none}
.menu-btn{display:none;cursor:pointer;padding:10px;min-width:44px;min-height:44px;align-items:center;justify-content:center}
.menu-btn svg{stroke:var(--ink)}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#F4EEDF 0%,var(--bg) 100%)}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:70% center}
.hero-inner{position:relative;min-height:480px;display:flex;align-items:center;padding:48px 0}
.hero-card{max-width:480px}
.hero h1{margin-bottom:.6rem}
.hero p.lead{color:var(--ink-soft);margin-bottom:1.2rem;font-size:1.02rem}
.hero-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
@media(max-width:860px){
  .hero-img{opacity:.999;position:relative;height:230px;object-position:75% center;border-radius:0}
  .hero-inner{min-height:0;padding:24px 0 32px;display:block}
  .hero-card{max-width:none}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:10px;font-weight:600;font-size:.97rem;min-height:48px;cursor:pointer;border:none}
.btn-primary{background:var(--primary);color:#fff !important}
.btn-primary:hover{background:var(--primary-dark)}
.btn-accent{background:var(--accent);color:#fff !important}
.btn-accent:hover{background:var(--accent-dark)}
.btn-zalo{background:var(--zalo);color:#fff !important}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary) !important}

/* Sections */
.section{padding:64px 0}
.section.tight{padding:44px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head p{color:var(--ink-soft)}
.kicker{display:inline-block;color:var(--accent-dark);font-weight:600;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;margin-bottom:.4rem}

/* Car grid */
.car-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:980px){.car-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.car-grid{grid-template-columns:1fr}}
.car-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column}
.car-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(30,42,47,.12)}
.car-photo{position:relative;aspect-ratio:4/3;background:#EDE9DF}
.car-photo img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;top:10px;left:10px;background:var(--primary);color:#fff;font-size:.74rem;font-weight:600;padding:4px 10px;border-radius:999px}
.badge.ev{background:var(--accent)}
.car-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.car-body h3 a{color:var(--ink)}
.car-body h3 a:hover{color:var(--primary)}
.car-price{color:var(--accent-dark);font-weight:700;font-size:1.3rem}
.car-specs{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}
.chip{display:inline-flex;align-items:center;gap:5px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:4px 9px;font-size:.8rem;color:var(--ink-soft)}
.chip svg{stroke:var(--primary);flex:none}

/* Breadcrumb */
.breadcrumb{padding:14px 0;font-size:.85rem;color:var(--ink-soft)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb li+li::before{content:"›";margin-right:6px;color:var(--line)}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--ink);font-weight:500}

/* Page band header */
.page-band{background:linear-gradient(120deg,var(--ink) 0%,var(--primary-dark) 100%);color:#fff;padding:40px 0;position:relative;overflow:hidden}
.page-band::after{content:"";position:absolute;right:-40px;bottom:-30px;width:320px;height:160px;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 160"><path d="M20 110 q30 -48 90 -52 l30 -26 q60 -14 110 4 l40 30 q14 4 14 22 v18 h-26 a26 26 0 0 0 -52 0 h-118 a26 26 0 0 0 -52 0 h-36 z" fill="none" stroke="white" stroke-width="3" opacity=".14"/></svg>') no-repeat;background-size:contain}
.page-band h1{color:#fff;font-size:clamp(1.45rem,3.4vw,2rem)}
.page-band p{color:rgba(255,255,255,.85);max-width:720px;margin-top:.5rem}

/* Content prose */
.prose{max-width:780px}
.prose p{margin-bottom:1rem;color:var(--ink-soft)}
.prose h2{margin-top:2rem}
.prose h3{margin-top:1.4rem;margin-bottom:.5rem}
.prose ul{margin:0 0 1rem 1.2rem;color:var(--ink-soft)}
.prose li{margin-bottom:.4rem}
.prose strong{color:var(--ink)}
.prose a{font-weight:500}

/* Trust */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.trust-grid{grid-template-columns:1fr}}
.trust-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.trust-item svg{stroke:var(--primary);margin-bottom:10px}
.trust-item h3{margin-bottom:6px}
.trust-item p{color:var(--ink-soft);font-size:.95rem}

/* Links hub */
.link-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:980px){.link-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.link-grid{grid-template-columns:1fr}}
.link-tile{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-weight:500;color:var(--ink);display:flex;justify-content:space-between;align-items:center;min-height:48px}
.link-tile:hover{border-color:var(--primary);color:var(--primary)}
.link-tile::after{content:"→";color:var(--accent)}

/* Detail page */
.detail-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:start}
@media(max-width:900px){.detail-grid{grid-template-columns:1fr}}
.detail-photo{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#EDE9DF}
.spec-table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec-table th,.spec-table td{padding:11px 14px;text-align:left;font-size:.95rem;border-bottom:1px solid var(--line)}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.spec-table th{color:var(--ink-soft);font-weight:500;width:42%;background:var(--bg)}
.price-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.price-box .car-price{font-size:1.8rem}
.price-box .btn{width:100%;margin-top:10px}
.note{font-size:.85rem;color:var(--ink-soft)}

/* FAQ */
.faq{max-width:780px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:10px;margin-bottom:10px;padding:0 18px}
.faq summary{font-weight:600;cursor:pointer;padding:14px 0;list-style:none;min-height:44px;display:flex;align-items:center;justify-content:space-between}
.faq summary::after{content:"+";color:var(--accent);font-size:1.2rem}
.faq details[open] summary::after{content:"–"}
.faq details p{padding-bottom:14px;color:var(--ink-soft)}

/* Footer */
.site-footer{background:var(--ink);color:#C9D2D6;margin-top:64px;padding:48px 0 110px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:28px}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.footer-grid{grid-template-columns:1fr}}
.site-footer h3{color:#fff;font-size:1rem;margin-bottom:12px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#C9D2D6;font-size:.92rem}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;font-size:.85rem;color:#8FA0A7;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* Sticky mobile bar */
.mobile-bar{display:none}
@media(max-width:860px){
  .nav{position:fixed;inset:64px 0 auto 0;background:var(--surface);flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);transform:translateY(-130%);transition:transform .25s ease;z-index:40}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line);min-height:48px;display:flex;align-items:center}
  .nav a:last-of-type{border-bottom:none}
  .nav .btn-call{display:none}
  .menu-btn{display:inline-flex}
  .menu-toggle:checked ~ .nav{transform:translateY(0)}
  .mobile-bar{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;position:fixed;bottom:0;left:0;right:0;z-index:60;background:var(--line)}
  .mobile-bar a{display:flex;align-items:center;justify-content:center;gap:7px;min-height:54px;font-weight:600;font-size:.92rem;color:#fff}
  .mb-call{background:var(--primary)}
  .mb-sms{background:var(--ink)}
  .mb-zalo{background:var(--zalo)}
}
@media(min-width:861px){.menu-toggle{display:none}}