/* ProDataBox 独立站样式（前台 + 后台共用） */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #0b5cab;
  --primary-dark: #084a8a;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --danger: #dc2626;
}

body {
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 头部导航 */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-size: 22px; font-weight: 700; color: var(--primary); }
.logo:hover { text-decoration: none; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: var(--text); font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

/* 首屏 */
.hero { padding: 60px 0 40px; text-align: center; background: var(--bg-soft); border-radius: 12px; margin: 24px 0; }
.hero h1 { font-size: 34px; margin-bottom: 12px; }
.hero p { color: var(--muted); max-width: 720px; margin: 0 auto; }

main section { margin: 40px 0; }
h1 { font-size: 28px; margin: 24px 0 16px; }
main section > h2 { font-size: 22px; margin-bottom: 16px; }

/* 产品卡片 */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; list-style: none; }
.card { border: 1px solid var(--border); border-radius: 10px; padding: 16px; background: var(--bg); transition: box-shadow .15s; }
.card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.card img { width: 100%; height: auto; border-radius: 6px; background: var(--bg-soft); }
.card h2, .card h3 { font-size: 17px; margin: 10px 0 4px; color: var(--text); }
.card a:hover { text-decoration: none; }
.card a:hover h2, .card a:hover h3 { color: var(--primary); }
.spec-line { color: var(--muted); font-size: 14px; min-height: 20px; }
.stock { color: var(--muted); font-size: 14px; }
.price { color: var(--primary); font-weight: 700; font-size: 18px; margin-top: 6px; }
.more { margin-top: 16px; }

/* 面包屑 */
.breadcrumb { display: flex; gap: 8px; list-style: none; color: var(--muted); font-size: 14px; margin-top: 20px; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--border); }

/* 产品详情 */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin: 24px 0 48px; }
.product-detail figure img { width: 100%; height: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-soft); }
.product-detail h1 { margin-top: 0; }
.desc { color: var(--muted); margin: 12px 0; }
.specs { margin: 12px 0 24px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.specs div { display: flex; border-bottom: 1px solid var(--border); }
.specs div:last-child { border-bottom: none; }
.specs dt { flex: 0 0 140px; padding: 10px 14px; background: var(--bg-soft); font-weight: 600; font-size: 14px; }
.specs dd { padding: 10px 14px; font-size: 14px; }
.checkout-link { margin-top: 16px; }

/* 询价表单 */
.inquiry-form { display: grid; gap: 12px; max-width: 420px; }
.inquiry-form label, .admin-form label, .login-box label { display: grid; gap: 4px; font-size: 14px; font-weight: 500; }
input, textarea, select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 14px; font-family: inherit; width: 100%;
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--primary); outline-offset: -1px; border-color: var(--primary); }
button {
  padding: 10px 22px; background: var(--primary); color: #fff; border: none;
  border-radius: 6px; font-size: 15px; cursor: pointer; font-weight: 600;
}
button:hover { background: var(--primary-dark); }

/* 内容页 */
.page-content { max-width: 760px; margin: 32px auto 60px; }
.page-content h2 { margin: 28px 0 10px; font-size: 20px; }
.page-content ul, .page-content ol { padding-left: 24px; }
.page-content li { margin: 6px 0; }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); margin-top: 60px; padding: 40px 0; }
.site-footer h2 { font-size: 18px; margin-bottom: 10px; }
.site-footer address { font-style: normal; color: var(--muted); }
.copy { color: var(--muted); font-size: 13px; margin-top: 24px; }

/* ===== 后台 ===== */
body.admin { background: var(--bg-soft); }
.login-box { max-width: 360px; margin: 12vh auto; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 32px; }
.login-box h1 { font-size: 20px; margin: 0 0 20px; }
.login-box form { display: grid; gap: 14px; }
.error { color: var(--danger); font-size: 14px; margin-bottom: 12px; }
.admin-header { display: flex; align-items: baseline; justify-content: space-between; }
.admin-header h1 { margin-bottom: 8px; }
.admin-table { width: 100%; border-collapse: collapse; background: var(--bg); font-size: 14px; margin: 12px 0 32px; }
.admin-table th, .admin-table td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
.admin-table th { background: var(--bg-soft); }
.actions { display: flex; gap: 8px; align-items: center; }
.btn { display: inline-block; padding: 4px 12px; background: var(--primary); color: #fff; border-radius: 5px; font-size: 13px; }
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-danger { padding: 4px 12px; background: var(--danger); font-size: 13px; }
.btn-danger:hover { background: #b91c1c; }
.actions form { margin: 0; }
.form-box { max-width: 560px; margin: 40px auto; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 32px; }
.form-box h1 { font-size: 20px; margin: 0 0 20px; }
.admin-form { display: grid; gap: 14px; }
.form-actions { display: flex; gap: 16px; align-items: center; margin-top: 8px; }
.hint { color: var(--muted); font-size: 13px; margin: 24px 0 48px; }

@media (max-width: 860px) {
  .product-detail { grid-template-columns: 1fr; }
  .nav-links { gap: 14px; }
  .admin-table { display: block; overflow-x: auto; }
}