/* NenPower 商城样式 —— 沿用现有 Delta 站的暗色调色板，保证视觉连续性 */

:root {
  --primary-dark: #0f172a;
  --primary-blue: #0ea5e9;
  --accent-cyan: #06b6d4;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --success-green: #10b981;
  --warning-amber: #f59e0b;
  --error-red: #ef4444;
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --border: #334155;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg-darker);
  color: var(--text-primary);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

a { color: var(--primary-blue); text-decoration: none; }
a:hover { color: var(--accent-cyan); }

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--text-secondary); }
.small { font-size: .875rem; }

/* ---- header / footer ---- */

.site-header {
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-size: 1.35rem; font-weight: 700; color: var(--text-primary); letter-spacing: -.02em; }
.brand:hover { color: var(--accent-cyan); }
.main-nav { display: flex; gap: 24px; align-items: center; }
.main-nav a { color: var(--text-secondary); font-size: .95rem; }
.main-nav a:hover { color: var(--text-primary); }
.cart-link { color: var(--text-primary) !important; font-weight: 600; }
.badge {
  background: var(--primary-blue); color: #fff; border-radius: 999px;
  padding: 1px 8px; font-size: .78rem; margin-left: 2px;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 72px; padding: 40px 0 56px;
  background: var(--bg-dark);
}
.footer-inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.footer-inner nav { display: flex; flex-direction: column; gap: 8px; }
.site-footer .muted.small { margin-top: 24px; }

/* ---- generic blocks ---- */

.section { padding: 56px 0; }
.hero {
  padding: 80px 0 64px;
  background: linear-gradient(160deg, var(--bg-dark), var(--bg-darker));
  border-bottom: 1px solid var(--border);
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); margin: 0 0 16px; letter-spacing: -.03em; }
.hero p { font-size: 1.15rem; color: var(--text-secondary); max-width: 640px; margin: 0 0 28px; }

h1, h2, h3 { letter-spacing: -.02em; }
h2 { font-size: 1.75rem; margin: 0 0 24px; }

.btn {
  display: inline-block; padding: 12px 24px; border-radius: var(--radius);
  background: var(--primary-blue); color: #fff !important; font-weight: 600;
  border: none; cursor: pointer; font-size: 1rem;
}
.btn:hover { background: var(--accent-cyan); }
.btn:disabled { background: var(--bg-card-hover); color: var(--text-secondary) !important; cursor: not-allowed; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text-primary) !important; }
.btn-ghost:hover { background: var(--bg-card); }
.btn-sm { padding: 7px 14px; font-size: .875rem; }

.alert { padding: 12px 16px; border-radius: var(--radius); margin: 16px 0; border: 1px solid; }
.alert-error, .alert-danger { background: rgba(239,68,68,.1); border-color: var(--error-red); color: #fecaca; }
.alert-success { background: rgba(16,185,129,.1); border-color: var(--success-green); color: #a7f3d0; }
.alert-info, .alert-warning { background: rgba(245,158,11,.1); border-color: var(--warning-amber); color: #fde68a; }

.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}

/* ---- product grid ---- */

.grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.product-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column;
}
.product-card:hover { border-color: var(--primary-blue); }
.product-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; background: var(--bg-darker); }
.product-card .body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { margin: 0 0 6px; font-size: 1.1rem; }
.product-card h3 a { color: var(--text-primary); }
.product-card .sub { color: var(--text-secondary); font-size: .9rem; flex: 1; }
.product-card .price { font-size: 1.25rem; font-weight: 700; margin-top: 14px; }
.sold-out { color: var(--error-red); font-weight: 600; }
.in-stock { color: var(--success-green); font-weight: 600; font-size: .875rem; }

/* ---- product detail ---- */

.detail { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; padding: 48px 0; }
@media (max-width: 860px) { .detail { grid-template-columns: 1fr; gap: 28px; } }
.gallery img { width: 100%; border-radius: var(--radius); border: 1px solid var(--border); }
.gallery .thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.gallery .thumbs img { width: 76px; height: 60px; object-fit: cover; cursor: pointer; }

.variant-option {
  display: block; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 10px; cursor: pointer;
}
.variant-option:hover { border-color: var(--primary-blue); }
.variant-option input { margin-right: 10px; }
.variant-option .v-price { float: right; font-weight: 700; }

table.specs { width: 100%; border-collapse: collapse; margin-bottom: 28px; }
table.specs th, table.specs td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.specs th { color: var(--text-secondary); font-weight: 500; width: 42%; }
table.specs caption { text-align: left; font-weight: 700; padding: 16px 0 8px; font-size: 1.05rem; }

.prose { line-height: 1.75; }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius); }
.prose pre {
  background: var(--bg-darker); border: 1px solid var(--border);
  padding: 16px; border-radius: var(--radius); overflow-x: auto;
}
.prose code { background: var(--bg-darker); padding: 2px 6px; border-radius: 4px; font-size: .9em; }
.prose pre code { background: none; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 8px 12px; }
.prose blockquote {
  border-left: 3px solid var(--primary-blue); margin: 0; padding: 4px 20px;
  color: var(--text-secondary);
}

.faq-item { border-bottom: 1px solid var(--border); padding: 16px 0; }
.faq-item h4 { margin: 0 0 8px; }

/* ---- cart / checkout ---- */

table.lines { width: 100%; border-collapse: collapse; }
table.lines th, table.lines td { padding: 14px 10px; border-bottom: 1px solid var(--border); text-align: left; }
table.lines th { color: var(--text-secondary); font-weight: 500; font-size: .875rem; }
table.lines td.num, table.lines th.num { text-align: right; }

.totals { margin-left: auto; max-width: 380px; }
.totals div { display: flex; justify-content: space-between; padding: 8px 0; }
.totals .grand { border-top: 1px solid var(--border); margin-top: 8px; padding-top: 14px; font-size: 1.25rem; font-weight: 700; }

.checkout-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; padding: 40px 0; }
@media (max-width: 860px) { .checkout-grid { grid-template-columns: 1fr; } }

label.field { display: block; margin-bottom: 16px; }
label.field span { display: block; font-size: .875rem; color: var(--text-secondary); margin-bottom: 6px; }
input[type=text], input[type=email], input[type=number], select, textarea {
  width: 100%; padding: 11px 13px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--bg-dark); color: var(--text-primary);
  font-size: 1rem; font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-blue); outline-offset: -1px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.ship-option { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin-bottom: 10px; cursor: pointer; display: block; }
.ship-option:hover { border-color: var(--primary-blue); }
.ship-option .amt { float: right; font-weight: 700; }

.duty-notice {
  background: rgba(245,158,11,.08); border: 1px solid var(--warning-amber);
  color: #fde68a; padding: 14px 16px; border-radius: var(--radius);
  font-size: .9rem; margin: 20px 0;
}

/* ---- status ---- */

.status-pill { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: .8rem; font-weight: 600; }
.status-pending_payment { background: rgba(148,163,184,.2); color: var(--text-secondary); }
.status-paid, .status-processing { background: rgba(16,185,129,.15); color: var(--success-green); }
.status-shipped, .status-delivered { background: rgba(14,165,233,.15); color: var(--primary-blue); }
.status-cancelled { background: rgba(239,68,68,.15); color: var(--error-red); }
.status-refunded, .status-partially_refunded { background: rgba(245,158,11,.15); color: var(--warning-amber); }

/* ---- docs ---- */

.doc-layout { display: grid; grid-template-columns: 250px 1fr; gap: 44px; padding: 40px 0; }
@media (max-width: 860px) { .doc-layout { grid-template-columns: 1fr; } }
.doc-nav h4 { color: var(--text-secondary); font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; margin: 22px 0 8px; }
.doc-nav a { display: block; padding: 5px 0; font-size: .93rem; }
.lang-switch { float: right; font-size: .875rem; }