:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e3e6ea;
  --text: #1c2128;
  --text-muted: #5c6470;
  --primary: #2f5fdb;
  --primary-dark: #2549ad;
  --success: #1a8754;
  --warning: #b8860b;
  --danger: #c0342d;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(20, 24, 32, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 15px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; max-width: 1120px; margin: 0 auto; }
.brand { font-weight: 700; font-size: 18px; color: var(--text); }
.nav-links { display: flex; gap: 18px; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 14px; }
.nav-links a.active, .nav-links a:hover { color: var(--text); }

.btn {
  display: inline-block;
  padding: 9px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-outline { background: transparent; color: var(--primary); }
.btn-outline:hover { background: #eef2fd; }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-block { width: 100%; text-align: center; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.product-card { display: flex; flex-direction: column; gap: 10px; }
.product-thumb { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 6px; background: #eef0f3; }
.product-title { font-weight: 600; font-size: 16px; }
.product-desc { color: var(--text-muted); font-size: 13.5px; }
.product-meta { display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
.price { font-weight: 700; font-size: 16px; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-category { background: #eef2fd; color: var(--primary-dark); }
.badge-ok { background: #e6f6ee; color: var(--success); }
.badge-warn { background: #fbf1dc; color: var(--warning); }
.badge-fail { background: #fbe9e8; color: var(--danger); }
.badge-pending { background: #eef0f3; color: var(--text-muted); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}
.form-control:focus { outline: none; border-color: var(--primary); }
textarea.form-control { min-height: 110px; resize: vertical; }

.auth-wrap { max-width: 420px; margin: 60px auto; }
.auth-wrap h1 { font-size: 22px; margin-bottom: 4px; }
.auth-wrap p.sub { color: var(--text-muted); margin-top: 0; margin-bottom: 24px; font-size: 14px; }

.alert { padding: 10px 14px; border-radius: 6px; font-size: 14px; margin-bottom: 16px; }
.alert-error { background: #fbe9e8; color: var(--danger); }
.alert-success { background: #e6f6ee; color: var(--success); }

.hero { padding: 70px 20px 60px; text-align: center; }
.hero h1 { font-size: 34px; margin-bottom: 12px; letter-spacing: -0.5px; }
.hero p { color: var(--text-muted); font-size: 16px; max-width: 560px; margin: 0 auto 26px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; }

.section { padding: 50px 0; }
.section h2 { font-size: 22px; margin-bottom: 24px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }
.step-num { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 10px; }

table.table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.table th, table.table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
table.table th { color: var(--text-muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.03em; }
.table-wrap { overflow-x: auto; }

.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
@media (max-width: 900px) { .stat-cards { grid-template-columns: repeat(2, 1fr); } }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat-card .label { color: var(--text-muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.03em; }
.stat-card .value { font-size: 24px; font-weight: 700; margin-top: 4px; }

.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: #16181d; color: #cfd3da; flex-shrink: 0; }
.admin-sidebar .brand { color: #fff; padding: 18px 20px; font-weight: 700; border-bottom: 1px solid #262a31; }
.admin-sidebar a { display: block; padding: 10px 20px; color: #cfd3da; font-size: 14px; }
.admin-sidebar a:hover, .admin-sidebar a.active { background: #22262e; color: #fff; text-decoration: none; }
.admin-main { flex: 1; padding: 26px 30px; max-width: 100%; overflow-x: hidden; }
@media (max-width: 800px) {
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; display: flex; overflow-x: auto; }
  .admin-sidebar .brand { display: none; }
  .admin-sidebar a { white-space: nowrap; }
}

.footer { border-top: 1px solid var(--border); padding: 30px 0; color: var(--text-muted); font-size: 13.5px; text-align: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.muted { color: var(--text-muted); }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.empty-state { text-align: center; padding: 50px 20px; color: var(--text-muted); }

/* ───── Theme: neutral surfaces, one accent, selective glass ───── */
:root { --font: Inter, "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif; --glass: rgba(255,255,255,.72); --glass-border: rgba(20,24,32,.09); }
[data-theme="dark"] {
  --bg: #0e1116; --surface: #161a21; --border: #262c36; --text: #e8ebf0; --text-muted: #98a1ae;
  --primary: #6c8cff; --primary-dark: #5575e6; --success: #3fb97f; --warning: #d9a441; --danger: #ef6a63;
  --shadow: 0 1px 3px rgba(0,0,0,.4); --glass: rgba(26,31,40,.72); --glass-border: rgba(255,255,255,.08);
}
body { font-family: var(--font); }
[data-theme="dark"] .form-control { background: #10141a; }
[data-theme="dark"] .btn-outline:hover { background: #1d2430; }
[data-theme="dark"] .badge-category { background: #1d2740; color: #9db3ff; }
[data-theme="dark"] .badge-ok { background: #123325; } [data-theme="dark"] .badge-warn { background: #3a2f12; }
[data-theme="dark"] .badge-fail { background: #3d1c1a; } [data-theme="dark"] .badge-pending { background: #212733; }
[data-theme="dark"] .alert-error { background: #3d1c1a; } [data-theme="dark"] .alert-success { background: #123325; }
.nav, .app-topbar { background: var(--glass); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--glass-border); position: sticky; top: 0; z-index: 20; }
.card, .stat-card { border-color: var(--glass-border); }
.theme-toggle { background: transparent; border: 1px solid var(--border); color: var(--text-muted); border-radius: 8px; padding: 5px 9px; cursor: pointer; font-size: 13px; }

/* App shell (customer) — shares geometry with the admin shell */
.app-layout { display: flex; min-height: 100vh; }
.app-sidebar { width: 232px; flex-shrink: 0; background: var(--glass); border-right: 1px solid var(--glass-border); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); padding: 14px 10px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.app-sidebar .brand { display: block; padding: 8px 12px 16px; font-weight: 700; font-size: 17px; color: var(--text); }
.app-sidebar a.item { display: flex; justify-content: space-between; padding: 9px 12px; border-radius: 8px; color: var(--text-muted); font-size: 14px; }
.app-sidebar a.item:hover, .app-sidebar a.item.active { background: color-mix(in srgb, var(--primary) 12%, transparent); color: var(--text); text-decoration: none; }
.app-main { flex: 1; min-width: 0; padding: 22px 28px 60px; }
.app-topbar { display: none; padding: 10px 14px; align-items: center; justify-content: space-between; }
.pill { background: var(--primary); color: #fff; border-radius: 999px; font-size: 11px; padding: 1px 7px; }
.meter { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.meter > i { display: block; height: 100%; background: var(--primary); }
.meter.warn > i { background: var(--warning); } .meter.full > i { background: var(--danger); }
.steps { list-style: none; padding: 0; margin: 0; } .steps li { padding: 7px 0; color: var(--text-muted); } .steps li.done { color: var(--text); } .steps li.now { color: var(--primary); font-weight: 600; }
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 6px 14px; } .kv dt { color: var(--text-muted); } .kv dd { margin: 0; word-break: break-all; }
.table-wrap { overflow-x: auto; }
@media (max-width: 900px) {
  .app-layout { flex-direction: column; }
  .app-topbar { display: flex; }
  .app-sidebar { position: fixed; left: 0; top: 0; bottom: 0; z-index: 30; transform: translateX(-100%); transition: transform .2s; background: var(--surface); }
  .app-sidebar.open { transform: none; }
  .app-main { padding: 16px 14px 60px; }
  .kv { grid-template-columns: 1fr; }
  .btn, .form-control { min-height: 40px; }
}
@media (prefers-reduced-motion: reduce) { .app-sidebar { transition: none; } }