/* ============================================================
   BLF Auto Parts — Global Stylesheet
   Design language: deep navy + bright blue, clean catalog cards
   ============================================================ */
:root {
  --navy: #0d2b4e;
  --navy-dark: #091f38;
  --blue: #2176d2;
  --blue-dark: #1a5cae;
  --blue-light: #eaf3fd;
  --ink: #1c2733;
  --muted: #5d6b7a;
  --line: #e3e9f0;
  --bg: #f6f9fc;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(13, 43, 78, .08);
  --shadow-lg: 0 10px 30px rgba(13, 43, 78, .14);
  --font: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  background: var(--navy);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .18);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 20px; letter-spacing: .3px; white-space: nowrap; }
.brand:hover { color: #fff; }
.brand .logo-mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), #4da3ff);
  display: grid; place-items: center; font-size: 15px; font-weight: 900; color: #fff;
}
.brand small { display: block; font-size: 10px; font-weight: 500; color: #9db8d6; letter-spacing: 2.5px; text-transform: uppercase; line-height: 1; }
.main-nav { display: flex; align-items: center; gap: 4px; height: 100%; }
.main-nav a {
  color: #d7e4f3; font-size: 15px; font-weight: 600; padding: 8px 16px;
  border-bottom: 3px solid transparent; height: 64px; display: flex; align-items: center;
  transition: color .15s, border-color .15s;
}
.main-nav a:hover { color: #fff; }
.main-nav a.active { color: #fff; border-bottom-color: var(--blue); }
.header-social { display: flex; gap: 14px; align-items: center; }
.header-social a { color: #b9cde4; display: grid; place-items: center; }
.header-social a:hover { color: #fff; }
.header-social svg { width: 18px; height: 18px; fill: currentColor; }
.nav-toggle { display: none; background: none; border: 0; color: #fff; cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 26px; height: 26px; fill: currentColor; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(180deg, #f4f8fd 0%, #ffffff 100%);
  padding: 84px 0 64px;
  text-align: center;
  overflow: hidden;
}
.hero.with-photo {
  background: var(--navy-dark) url("../img/hero.jpg") center/cover no-repeat;
  color: #fff;
}
.hero.with-photo::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(9, 31, 56, .82), rgba(9, 31, 56, .68));
}
.hero.with-photo .container { position: relative; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); font-weight: 800; color: var(--navy); letter-spacing: -.5px; }
.hero.with-photo h1 { color: #fff; }
.hero .tagline { font-size: 18px; color: var(--muted); max-width: 640px; margin: 16px auto 0; }
.hero.with-photo .tagline { color: #c8d9ec; }

/* ---------- Search card ---------- */
.search-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); max-width: 860px; margin: 40px auto 0; padding: 8px 32px 28px;
}
.search-tabs { display: flex; justify-content: center; gap: 36px; }
.search-tabs button {
  background: none; border: 0; cursor: pointer; font-family: var(--font);
  font-size: 16px; font-weight: 700; color: var(--muted);
  padding: 18px 12px 12px; border-bottom: 3px solid transparent; margin-bottom: -1px;
}
.search-tabs button.active { color: var(--navy); border-bottom-color: var(--blue); border-bottom-left-radius: 8px; border-bottom-right-radius: 8px; }
.search-tabs { border-bottom: 1px solid var(--line); margin: 0 -32px 22px; }
.search-row { display: flex; gap: 0; max-width: 640px; margin: 0 auto; }
.search-row input, .search-row select {
  font-family: var(--font); font-size: 15px; padding: 13px 16px;
  border: 1.5px solid var(--line); outline: none; background: #fff; color: var(--ink);
}
.search-row input { flex: 1; border-radius: 8px 0 0 8px; border-right: 0; }
.search-row input:focus, .search-row select:focus { border-color: var(--blue); }
.search-row select { border-radius: 0; border-right: 0; max-width: 190px; }
.search-row .btn { border-radius: 0 8px 8px 0; padding: 13px 28px; }
.search-row input.standalone { border-radius: 8px 0 0 8px; }
.search-tips {
  background: var(--blue-light); border-radius: 10px; padding: 14px 18px;
  font-size: 13.5px; color: #33506e; margin-top: 18px; text-align: left; line-height: 1.7;
}
.search-tips strong { color: var(--navy); }
.search-tips code {
  background: #fff; border: 1px solid #cfe2f6; border-radius: 5px;
  padding: 1px 7px; font-size: 12.5px; color: var(--blue-dark); font-family: Consolas, monospace;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; font-family: var(--font); font-size: 15px; font-weight: 700;
  padding: 13px 30px; border-radius: 8px; border: 0; cursor: pointer;
  background: var(--blue); color: #fff; transition: background .15s, transform .1s;
  text-align: center;
}
.btn:hover { background: var(--blue-dark); color: #fff; transform: translateY(-1px); }
.btn.outline { background: transparent; color: var(--blue); border: 2px solid var(--blue); }
.btn.outline:hover { background: var(--blue); color: #fff; }
.btn.light { background: #fff; color: var(--navy); }
.btn.light:hover { background: #e8f1fb; color: var(--navy); }
.btn.small { padding: 9px 20px; font-size: 14px; }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section.alt { background: var(--bg); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; color: var(--navy); letter-spacing: -.3px; }
.section-head p { color: var(--muted); margin-top: 10px; font-size: 16px; }

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .18s, box-shadow .18s;
  display: flex; flex-direction: column;
}
.cat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.cat-card .cat-img { aspect-ratio: 4/3; overflow: hidden; background: #f2f6fa; }
.cat-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.cat-card:hover .cat-img img { transform: scale(1.05); }
.cat-card .cat-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.cat-card h3 { font-size: 17px; font-weight: 700; color: var(--navy); }
.cat-card .cat-cn { font-size: 13px; color: var(--muted); }
.cat-card .cat-count { margin-top: auto; padding-top: 12px; font-size: 13.5px; font-weight: 700; color: var(--blue); }

/* ---------- Product cards ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.prod-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .18s, box-shadow .18s;
  display: flex; flex-direction: column; color: var(--ink);
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); color: var(--ink); }
.prod-card .prod-img { aspect-ratio: 1/1; background: #fff; overflow: hidden; border-bottom: 1px solid var(--line); }
.prod-card .prod-img img { width: 100%; height: 100%; object-fit: cover; }
.prod-card .prod-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.badge {
  display: inline-block; align-self: flex-start; font-size: 12px; font-weight: 700;
  background: var(--blue-light); color: var(--blue-dark); border-radius: 20px; padding: 3px 12px;
}
.prod-card h3 { font-size: 15.5px; font-weight: 700; color: var(--ink); line-height: 1.45; word-break: break-word; }
.prod-card .sku { font-size: 13px; color: var(--muted); }
.prod-card .view { margin-top: auto; padding-top: 10px; font-size: 13.5px; font-weight: 700; color: var(--blue); }

/* ---------- Pagination ---------- */
.pagination { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 42px; }
.pagination a, .pagination span {
  min-width: 40px; height: 40px; display: grid; place-items: center; padding: 0 12px;
  border-radius: 8px; border: 1px solid var(--line); background: #fff;
  font-size: 14.5px; font-weight: 600; color: var(--ink);
}
.pagination a:hover { border-color: var(--blue); color: var(--blue); }
.pagination .current { background: var(--blue); border-color: var(--blue); color: #fff; }
.pagination .gap { border: 0; background: none; }

/* ---------- Result meta ---------- */
.result-meta { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; margin: 34px 0 20px; }
.result-meta h2 { font-size: 21px; color: var(--navy); font-weight: 700; }
.result-meta .count { color: var(--muted); font-size: 14.5px; }
.empty-state { text-align: center; padding: 70px 20px; color: var(--muted); }
.empty-state .icon { font-size: 44px; margin-bottom: 12px; }
.empty-state h3 { color: var(--navy); font-size: 20px; margin-bottom: 8px; }

/* ---------- Product detail ---------- */
.breadcrumb { font-size: 14px; color: var(--muted); padding: 22px 0 0; }
.breadcrumb a { color: var(--blue); }
.pd-layout { display: grid; grid-template-columns: 480px 1fr; gap: 48px; margin-top: 26px; }
.pd-gallery { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); align-self: start; }
.pd-gallery img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.pd-info h1 { font-size: clamp(22px, 3vw, 30px); color: var(--navy); font-weight: 800; line-height: 1.35; word-break: break-word; }
.pd-info .pd-cat { margin: 12px 0 20px; }
.pd-table { width: 100%; border-collapse: collapse; margin: 18px 0 8px; }
.pd-table th, .pd-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 14.5px; vertical-align: top; }
.pd-table th { width: 210px; color: var(--muted); font-weight: 600; white-space: nowrap; }
.xref-list { display: flex; flex-wrap: wrap; gap: 8px; }
.xref-list a {
  background: var(--blue-light); color: var(--blue-dark); font-size: 13px; font-weight: 600;
  border-radius: 6px; padding: 5px 11px; border: 1px solid #d6e6f9; font-family: Consolas, monospace;
}
.xref-list a:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.pd-cta { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.pd-note { font-size: 13px; color: var(--muted); margin-top: 16px; }

/* ---------- Docs ---------- */
.doc-list { display: flex; flex-direction: column; gap: 14px; }
.doc-item {
  display: flex; align-items: center; gap: 18px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 22px; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.doc-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.doc-icon {
  width: 46px; height: 46px; border-radius: 10px; background: var(--blue-light);
  display: grid; place-items: center; flex-shrink: 0;
}
.doc-icon svg { width: 22px; height: 22px; fill: var(--blue-dark); }
.doc-item h3 { font-size: 15.5px; color: var(--navy); font-weight: 700; }
.doc-item .doc-meta { font-size: 13px; color: var(--muted); margin-top: 3px; }
.doc-item .btn { margin-left: auto; flex-shrink: 0; }

/* ---------- Reviews ---------- */
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.review-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 14px;
}
.review-card .stars { color: #f5a623; font-size: 17px; letter-spacing: 2px; }
.review-card p { color: #3d4c5c; font-size: 14.5px; flex: 1; }
.review-card .reviewer { display: flex; align-items: center; gap: 12px; }
.review-card .avatar {
  width: 42px; height: 42px; border-radius: 50%; background: var(--navy);
  color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 15px;
}
.review-card .reviewer strong { display: block; font-size: 14.5px; color: var(--navy); }
.review-card .reviewer span { font-size: 12.5px; color: var(--muted); }

/* ---------- Feature / value blocks ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow); text-align: center;
}
.feat-card .feat-icon {
  width: 58px; height: 58px; margin: 0 auto 18px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), #4da3ff);
  display: grid; place-items: center;
}
.feat-card .feat-icon svg { width: 26px; height: 26px; fill: #fff; }
.feat-card h3 { font-size: 17px; color: var(--navy); font-weight: 700; margin-bottom: 8px; }
.feat-card p { font-size: 14px; color: var(--muted); }
.stat-band { background: var(--navy); color: #fff; padding: 56px 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; text-align: center; }
.stat-grid .num { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: #6fb1ff; }
.stat-grid .lbl { font-size: 14.5px; color: #b9cde4; margin-top: 4px; }

/* ---------- Forms ---------- */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.form-field label { display: block; font-size: 13.5px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; font-family: var(--font); font-size: 15px; padding: 12px 14px;
  border: 1.5px solid var(--line); border-radius: 8px; outline: none; background: #fff; color: var(--ink);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { border-color: var(--blue); }
.form-field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 12px; }

/* ---------- Contact info ---------- */
.contact-layout { display: grid; grid-template-columns: 1.25fr 1fr; gap: 40px; align-items: start; }
.info-list { display: flex; flex-direction: column; gap: 16px; }
.info-item { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); }
.info-item .info-icon { width: 44px; height: 44px; border-radius: 10px; background: var(--blue-light); display: grid; place-items: center; flex-shrink: 0; }
.info-item .info-icon svg { width: 20px; height: 20px; fill: var(--blue-dark); }
.info-item strong { display: block; color: var(--navy); font-size: 15px; }
.info-item span { color: var(--muted); font-size: 14px; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(120deg, var(--navy), #14406e); color: #fff; text-align: center; padding: 66px 0; }
.cta-band h2 { font-size: clamp(24px, 3.2vw, 34px); font-weight: 800; }
.cta-band p { color: #b9cde4; margin: 12px auto 26px; max-width: 560px; }

/* ---------- Page hero (interior pages) ---------- */
.page-hero { background: linear-gradient(120deg, var(--navy), #14406e); color: #fff; padding: 64px 0; text-align: center; }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; }
.page-hero p { color: #b9cde4; margin-top: 10px; font-size: 16px; }

/* ---------- Prose ---------- */
.prose { max-width: 780px; margin: 0 auto; font-size: 15.5px; color: #3d4c5c; }
.prose h2 { color: var(--navy); font-size: 24px; margin: 34px 0 12px; }
.prose h3 { color: var(--navy); font-size: 19px; margin: 26px 0 10px; }
.prose p { margin-bottom: 14px; }
.prose ul { margin: 0 0 16px 22px; }
.prose li { margin-bottom: 7px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-dark); color: #b9cde4; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; padding: 58px 0 40px; }
.site-footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; letter-spacing: .4px; }
.site-footer a { color: #b9cde4; font-size: 14px; display: block; padding: 4px 0; }
.site-footer a:hover { color: #fff; }
.site-footer .footer-brand { color: #fff; font-size: 19px; font-weight: 800; margin-bottom: 12px; display: block; }
.site-footer p { font-size: 14px; line-height: 1.7; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding: 20px 0; text-align: center; font-size: 13px; color: #7e97b3; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--navy); color: #fff; padding: 13px 26px; border-radius: 10px;
  font-size: 14.5px; box-shadow: var(--shadow-lg); opacity: 0; transition: all .3s; z-index: 999;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .cat-grid, .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .review-grid, .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-layout { grid-template-columns: 1fr; gap: 30px; }
  .pd-gallery { max-width: 480px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .main-nav {
    position: absolute; top: 64px; left: 0; right: 0; background: var(--navy);
    flex-direction: column; align-items: stretch; padding: 10px 0; display: none;
    box-shadow: 0 14px 24px rgba(0, 0, 0, .25);
  }
  .main-nav.open { display: flex; }
  .main-nav a { height: auto; padding: 13px 24px; border-bottom: 0; }
  .nav-toggle { display: block; }
  .header-social { display: none; }
  .cat-grid, .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .search-card { padding: 8px 18px 22px; }
  .search-tabs { margin: 0 -18px 18px; gap: 12px; }
  .form-grid { grid-template-columns: 1fr; }
  .review-grid, .feat-grid { grid-template-columns: 1fr; }
  .search-row { flex-direction: column; gap: 10px; }
  .search-row input, .search-row select, .search-row .btn { border-radius: 8px; border-right: 1.5px solid var(--line); width: 100%; max-width: none; }
  .section { padding: 52px 0; }
  .hero { padding: 56px 0 44px; }
}


/* ============================================================
   WordPress-specific additions
   ============================================================ */
/* Active menu state (wp_nav_menu adds these classes to anchors) */
.main-nav a.current-menu-item,
.main-nav a.current_page_item,
.main-nav a.current-page-ancestor {
  color: #fff;
  border-bottom-color: var(--blue);
}
/* Sticky header offset when the admin bar is visible */
body.admin-bar .site-header { top: 32px; }
@media (max-width: 782px) {
  body.admin-bar .site-header { top: 46px; }
}
/* Basic content alignment classes */
.aligncenter { display: block; margin: 0 auto; }
.alignleft { float: left; margin-right: 16px; }
.alignright { float: right; margin-left: 16px; }