:root{
  --brand:#2563eb; --brand-2:#1e40af; --ink:#0f172a; --muted:#64748b;
  --line:#e5e7eb; --bg:#f8fafc; --card:#fff;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
a{color:inherit;text-decoration:none}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}

/* ============================================================
   HEADER (responsive)
   ============================================================ */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{font-weight:800;font-size:18px;color:var(--brand);flex-shrink:0}

.nav-toggle{
  display:none;
  background:transparent;border:0;font-size:20px;color:var(--ink);
  width:40px;height:40px;border-radius:8px;cursor:pointer;
}
.nav-toggle:hover{background:#f1f5f9}

.site-nav{display:flex;align-items:center;gap:8px}
.site-nav > a{padding:8px 12px;border-radius:8px;color:var(--muted);font-weight:500;font-size:14px;white-space:nowrap}
.site-nav > a:hover{background:#f1f5f9;color:var(--ink)}
.site-nav > a.is-active{color:var(--brand);background:#eff6ff}
.site-nav .user{color:var(--muted);font-size:14px;display:inline-flex;align-items:center;gap:6px;padding:0 4px}
.site-nav .btn{white-space:nowrap}

@media (max-width:720px){
  .header-inner{height:56px;flex-wrap:wrap;position:relative}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}

  .site-nav{
    display:none;
    position:absolute;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 16px 16px;gap:6px;
    box-shadow:0 12px 24px rgba(15,23,42,.06);
  }
  body.nav-open .site-nav{display:flex}
  .site-nav > a{padding:12px 14px;font-size:15px;border-radius:10px}
  .site-nav .user{padding:12px 14px;order:-1}
  .site-nav .btn{justify-content:center;padding:12px}
}

/* ============================================================
   HERO
   ============================================================ */
.hero{background:linear-gradient(135deg,#dbeafe,#eff6ff);padding:64px 0 48px;text-align:center}
.hero h1{margin:0 0 8px;font-size:40px;color:var(--ink);letter-spacing:-.02em}
.hero-sub{margin:0 0 24px;color:var(--muted);font-size:16px}
@media (max-width:600px){
  .hero{padding:40px 0 32px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:14px}
}

/* ============================================================
   SEARCHBAR (fully responsive)
   ============================================================ */
.searchbar{
  display:flex;
  align-items:stretch;
  gap:8px;
  max-width:780px;
  margin:0 auto;
  background:#fff;
  padding:8px;
  border-radius:14px;
  box-shadow:0 4px 16px rgba(15,23,42,.08);
}

.searchbar-field{
  position:relative;
  display:flex;
  align-items:center;
  background:#f1f5f9;
  border-radius:10px;
  padding:0 12px;
  min-width:0;
  flex:0 0 auto;
}
.searchbar-field--grow{flex:1 1 auto;min-width:180px}

.searchbar-icon{
  color:var(--muted);
  font-size:13px;
  margin-right:8px;
  flex-shrink:0;
  pointer-events:none;
}

.searchbar-field input,
.searchbar-field select{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  padding:12px 0;
  font-size:15px;
  font-family:inherit;
  color:var(--ink);
  outline:none;
  appearance:none;
  -webkit-appearance:none;
}
.searchbar-field select{
  cursor:pointer;
  padding-right:20px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 4px center;
}
.searchbar-field input::placeholder{color:var(--muted)}

.searchbar-btn{
  border:0;
  background:var(--brand);
  color:#fff;
  padding:0 22px;
  font-weight:700;
  font-size:14px;
  border-radius:10px;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  flex-shrink:0;
  transition:background .15s ease;
}
.searchbar-btn:hover{background:var(--brand-2)}
.searchbar-btn-label{white-space:nowrap}

/* Tablet — stack category below the input */
@media (max-width:720px){
  .searchbar{
    flex-wrap:wrap;
    padding:10px;
  }
  .searchbar-field--grow{
    flex:1 1 100%;
  }
  .searchbar-field{
    flex:1 1 calc(50% - 4px);
    padding:0 10px;
  }
  .searchbar-btn{
    flex:1 1 100%;
    padding:12px 20px;
  }
}

/* Phone — everything stacks, labels shrink */
@media (max-width:480px){
  .searchbar{padding:8px;gap:6px;border-radius:12px}
  .searchbar-field,
  .searchbar-field--grow{
    flex:1 1 100%;
    background:#f8fafc;
  }
  .searchbar-field input,
  .searchbar-field select{padding:11px 0;font-size:14px}
  .searchbar-btn{padding:12px;font-size:14px}
  .searchbar-btn-label{display:none}
  .searchbar-btn::after{
    content:"";
  }
  .searchbar-btn i{font-size:15px}
}

/* ============================================================
   CATEGORIES
   ============================================================ */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin:32px 0}
.cat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center;font-weight:600;color:var(--ink);transition:.15s;display:block}
.cat:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(15,23,42,.06);border-color:var(--brand)}
.cat i{display:block;font-size:24px;color:var(--brand);margin-bottom:6px}

.section-title{margin:32px 0 16px;font-size:22px}
.empty{padding:40px;background:#fff;border:1px dashed var(--line);border-radius:12px;text-align:center;color:var(--muted)}

/* ============================================================
   CARD GRID
   ============================================================ */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
@media (max-width:600px){
  .grid{grid-template-columns:1fr;gap:14px}
}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(15,23,42,.08)}
.card .thumb{aspect-ratio:4/3;background-size:cover;background-position:center;background-color:#e2e8f0;position:relative;display:flex;align-items:center;justify-content:center}
.card .no-img{color:#94a3b8;font-size:38px}
.card .badge{position:absolute;top:10px;left:10px;background:var(--brand);color:#fff;padding:3px 10px;border-radius:6px;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}
.card-body{padding:14px;display:flex;flex-direction:column;gap:6px;flex:1}
.cat-name{color:var(--brand);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em}
.card h3{margin:0;font-size:16px;line-height:1.35}
.card .meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;gap:8px}
.card .price{color:#0f766e;font-weight:700}
.card .loc{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card .sub{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-top:auto;padding-top:8px;border-top:1px dashed var(--line)}

/* ============================================================
   AD DETAIL
   ============================================================ */
.ad-detail{padding:32px 16px 64px}
.ad-detail-grid{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start}
@media (max-width:900px){.ad-detail-grid{grid-template-columns:1fr}}
.gallery .hero{width:100%;border-radius:14px;display:block;max-height:520px;object-fit:cover;background:#fff}
.gallery .placeholder{background:#e2e8f0;height:320px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:48px}
.thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.thumb-sm img{width:80px;height:60px;object-fit:cover;border-radius:6px;border:2px solid transparent}
.thumb-sm:hover img{border-color:var(--brand)}
.actions h1{margin:16px 0 8px;font-size:28px}
.subline{display:flex;gap:10px;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.subline .price{font-size:22px;font-weight:800;color:#0f766e}
.badge{background:#f1f5f9;color:var(--ink);padding:3px 10px;border-radius:6px;font-size:12px;font-weight:600}
.tagline{color:var(--muted);margin-bottom:20px}
.action-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.description,.safety{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:20px}
.description h2,.safety h3{margin-top:0}
.seller-card,.safety-side{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:16px}
.seller-card h3,.safety-side h4{margin-top:0}
.seller-name{font-weight:700;margin:8px 0 4px}
.seller-since{color:var(--muted);font-size:13px}
.location{color:var(--muted);font-size:13px;margin-top:12px}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:8px;background:#f1f5f9;color:var(--ink);font-weight:600;border:1px solid transparent;cursor:pointer;font-size:14px;text-decoration:none}
.btn:hover{background:#e2e8f0}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2)}
.btn-danger{background:#ef4444;color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-block{display:flex;width:100%}
.btn-sm{padding:6px 12px;font-size:13px}

/* ============================================================
   FORMS
   ============================================================ */
.post-ad{padding:32px 16px 64px;max-width:880px;margin:0 auto}
.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.post-form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column;gap:18px}
.post-form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.post-form .row.three{grid-template-columns:1fr 1fr 1fr}
@media (max-width:700px){.post-form .row,.post-form .row.three{grid-template-columns:1fr}}
.post-form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:14px;color:var(--ink)}
.post-form input,.post-form select,.post-form textarea{border:1px solid var(--line);border-radius:8px;padding:10px 12px;font:inherit;background:#f8fafc;outline:none;transition:.15s}
.post-form input:focus,.post-form select:focus,.post-form textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(37,99,235,.1)}
.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}
.alert{background:#fee2e2;color:#b91c1c;padding:10px 14px;border-radius:8px;margin-bottom:12px}

/* Login */
.login-wrap{padding:64px 16px;display:flex;justify-content:center}
.login-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;max-width:400px;width:100%}
.login-card h1{margin-top:0}

/* ============================================================
   DASHBOARD
   ============================================================ */
.dashboard{padding:32px 16px 64px}
.dash-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.dash-header h1{margin:0 0 4px}
.range-form select{padding:8px 12px;border-radius:8px;border:1px solid var(--line);background:#fff}
.kpis{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-bottom:24px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:4px}
.kpi-label{color:var(--muted);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.kpi-value{font-size:26px;font-weight:800;color:var(--ink)}
.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:20px}
.panel h2{margin-top:0;font-size:16px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:800px){.two-col{grid-template-columns:1fr}}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--line)}
th{background:#f8fafc;font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.pill{background:#eff6ff;color:var(--brand);padding:2px 8px;border-radius:99px;font-size:12px;font-weight:600}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{padding:24px 0;text-align:center;color:var(--muted);font-size:13px;border-top:1px solid var(--line);background:#fff;margin-top:32px}