:root {
  --bg: #ffffff;
  --surface: #f4f6f8;
  --surface-border: #e2e6ea;
  --text: #15181c;
  --text-muted: #5b6670;
  --bmw-blue: #0066b1;
  --bmw-blue-dark: #004c85;
  --bmw-silver: #8a9aa5;
  --m-red: #e4002b;
  --radius: 10px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--bmw-blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ---- header ---- */
.site-header {
  border-bottom: 3px solid var(--bmw-blue);
  background: var(--bg);
  position: sticky; top: 0; z-index: 50;
}
.site-header .bar {
  display: flex; align-items: center; gap: 20px;
  padding: 14px 20px; max-width: var(--max-width); margin: 0 auto;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.3rem; color: var(--text); }
.brand .m-dash { display: inline-block; width: 10px; height: 18px; background: var(--m-red); border-radius: 2px; }
.brand small { display: block; font-weight: 400; font-size: 0.72rem; color: var(--text-muted); }

.main-nav { display: flex; gap: 16px; flex-wrap: wrap; margin-left: auto; font-size: 0.92rem; }
.main-nav a { color: var(--text); font-weight: 500; }
.main-nav a:hover { color: var(--bmw-blue); text-decoration: none; }

.search-form { display: flex; margin-left: auto; }
.search-form input[type="search"] {
  border: 1px solid var(--surface-border); border-radius: var(--radius) 0 0 var(--radius);
  padding: 8px 12px; font-size: 0.9rem; width: 200px;
}
.search-form button {
  border: none; background: var(--bmw-blue); color: #fff; padding: 8px 14px;
  border-radius: 0 var(--radius) var(--radius) 0; cursor: pointer;
}
.search-form button:hover { background: var(--bmw-blue-dark); }

/* ---- hero / home ---- */
.hero {
  background: linear-gradient(135deg, var(--bmw-blue) 0%, var(--bmw-blue-dark) 100%);
  color: #fff; padding: 56px 20px; text-align: center;
}
.hero h1 { margin: 0 0 10px; font-size: 2.1rem; }
.hero p { margin: 0 auto; max-width: 640px; color: #e8f1fa; font-size: 1.05rem; }
.hero .m-accent { color: var(--m-red); font-weight: 700; }

.category-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px; padding: 28px 0 40px;
}
.category-card {
  background: var(--surface); border: 1px solid var(--surface-border);
  border-radius: var(--radius); padding: 18px 20px; transition: box-shadow .15s, border-color .15s;
}
.category-card:hover { border-color: var(--bmw-blue); box-shadow: 0 2px 10px rgba(0,0,0,0.06); }
.category-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.category-card a { color: var(--text); }
.category-card .count { color: var(--text-muted); font-size: 0.85rem; }

/* ---- content / pages ---- */
.page-layout { display: grid; grid-template-columns: 220px 1fr; gap: 32px; padding: 30px 0 60px; }
@media (max-width: 800px) { .page-layout { grid-template-columns: 1fr; } }

.sidebar { font-size: 0.9rem; }
.sidebar h4 { text-transform: uppercase; letter-spacing: .04em; font-size: 0.75rem; color: var(--text-muted); margin: 20px 0 8px; }
.sidebar ul { list-style: none; margin: 0 0 10px; padding: 0; }
.sidebar li { margin-bottom: 4px; }
.sidebar a.active { color: var(--m-red); font-weight: 600; }

.content h1 { font-size: 1.7rem; margin-top: 0; border-bottom: 1px solid var(--surface-border); padding-bottom: 12px; }
.content { font-size: 1rem; }
.content p, .content li { color: var(--text); }
.breadcrumbs { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 14px; }
.breadcrumbs a { color: var(--text-muted); }

.tag-row { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0 20px; }
.tag {
  display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 3px 9px;
  border-radius: 999px; background: var(--surface); color: var(--bmw-blue-dark);
  border: 1px solid var(--surface-border);
}
.tag.chassis { background: #fff3f3; color: var(--m-red); border-color: #ffd9de; }

.original-note {
  background: var(--surface); border-left: 3px solid var(--bmw-silver);
  padding: 10px 14px; font-size: 0.82rem; color: var(--text-muted); border-radius: 0 6px 6px 0; margin: 18px 0;
}
.original-note a { color: var(--bmw-blue); }

/* ---- faq ---- */
.faq-item { border-bottom: 1px solid var(--surface-border); padding: 16px 0; }
.faq-item h3 { margin: 0 0 8px; font-size: 1.05rem; }
.faq-item .faq-source { font-size: 0.78rem; color: var(--text-muted); }

/* ---- search results ---- */
.result-item { padding: 14px 0; border-bottom: 1px solid var(--surface-border); }
.result-item .kind { font-size: 0.72rem; text-transform: uppercase; color: var(--bmw-silver); font-weight: 700; letter-spacing: .04em; }
.result-item h3 { margin: 2px 0 6px; }
.result-item p { margin: 0; color: var(--text-muted); font-size: 0.9rem; }

/* ---- footer ---- */
.site-footer {
  border-top: 1px solid var(--surface-border); background: var(--surface);
  padding: 28px 20px; margin-top: 20px; font-size: 0.85rem; color: var(--text-muted);
}
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer a { color: var(--bmw-blue-dark); }

.btn {
  display: inline-block; background: var(--bmw-blue); color: #fff; padding: 9px 16px;
  border-radius: var(--radius); font-weight: 600; font-size: 0.9rem; border: none; cursor: pointer;
}
.btn:hover { background: var(--bmw-blue-dark); text-decoration: none; }
.btn.m { background: var(--m-red); }
.btn.m:hover { background: #b50022; }
.btn.ghost { background: transparent; color: var(--bmw-blue); border: 1px solid var(--bmw-blue); }

table { border-collapse: collapse; width: 100%; margin: 14px 0; }
table th, table td { border: 1px solid var(--surface-border); padding: 8px 10px; text-align: left; font-size: 0.92rem; }
table th { background: var(--surface); }

/* ---- admin ---- */
.admin-shell { display: grid; grid-template-columns: 200px 1fr; min-height: 100vh; }
.admin-nav { background: #0c1116; color: #cfd8de; padding: 20px 16px; }
.admin-nav .brand { color: #fff; font-weight: 700; margin-bottom: 20px; display: block; }
.admin-nav a { display: block; color: #cfd8de; padding: 8px 10px; border-radius: 6px; margin-bottom: 2px; font-size: 0.92rem; }
.admin-nav a:hover, .admin-nav a.active { background: var(--bmw-blue); color: #fff; text-decoration: none; }
.admin-main { padding: 28px 36px; max-width: 980px; }
.admin-main h1 { margin-top: 0; }
.login-box { max-width: 360px; margin: 80px auto; padding: 30px; border: 1px solid var(--surface-border); border-radius: var(--radius); }
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.88rem; }
.field input[type=text], .field input[type=password], .field input[type=email], .field select, .field textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--surface-border); border-radius: 6px; font-size: 0.92rem; font-family: inherit;
}
.field textarea { min-height: 260px; font-family: ui-monospace, Menlo, monospace; font-size: 0.85rem; }
.admin-table { width: 100%; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 0.9rem; }
.flash.ok { background: #e7f6ec; color: #136633; }
.flash.error { background: #fdeaea; color: #9c1c1c; }
.chip-input-hint { color: var(--text-muted); font-size: 0.78rem; margin-top: 4px; }