:root {
  --bg: #0f1117;
  --bg2: #171a22;
  --card: #1c2030;
  --border: #2a3045;
  --text: #e8eaf0;
  --muted: #9aa3b5;
  --accent: #6c5ce7;
  --accent2: #00cec9;
  --ok: #2ecc71;
  --warn: #f1c40f;
  --danger: #e74c3c;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--font); min-height: 100%; }
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 16px; }

.topbar {
  background: linear-gradient(90deg, #1a1430, #12202a);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.topbar-inner { display: flex; align-items: center; gap: 16px; padding: 12px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav { display: flex; gap: 14px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: .95rem; }
.nav a:hover, .nav a.active { color: #fff; }
.userbox { display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: .9rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 8px 14px; cursor: pointer; font-size: .9rem; text-decoration: none;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; color: #fff; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ok { background: var(--ok); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: .8rem; }
.btn-block { width: 100%; }

.layout { display: grid; grid-template-columns: 220px 1fr; gap: 18px; padding: 18px 0 80px; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }

.sidebar {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px; height: fit-content; position: sticky; top: 72px;
}
.sidebar h3 { margin: 4px 8px 12px; font-size: .85rem; color: var(--muted); letter-spacing: .05em; }
.cat-list { list-style: none; margin: 0; padding: 0; }
.cat-list a {
  display: flex; align-items: center; gap: 10px; padding: 10px 10px;
  border-radius: 8px; color: var(--text); text-decoration: none;
}
.cat-list a:hover, .cat-list a.active { background: #262b3d; }
.cat-list img { width: 22px; height: 22px; border-radius: 6px; object-fit: cover; background: #333; }
.cat-list .count { margin-left: auto; color: var(--muted); font-size: .75rem; }

.panel {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow);
}
.panel h1, .panel h2 { margin-top: 0; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.search { flex: 1; min-width: 180px; }
input, textarea, select {
  width: 100%; background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 10px 12px; font: inherit;
}
input[type="radio"], input[type="checkbox"] {
  width: auto; min-width: 1rem; height: auto; padding: 0; margin: 0;
  accent-color: var(--accent); flex-shrink: 0; vertical-align: middle;
}
label { display: block; margin: 10px 0 6px; color: var(--muted); font-size: .85rem; }
label.variant-option, label.pay-option { color: var(--text); font-size: .92rem; margin: 0; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; }
.price { color: #ffb347; font-weight: 700; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem;
  background: #2a3045; color: var(--muted);
}
.badge-ok { background: rgba(46,204,113,.15); color: var(--ok); }
.badge-warn { background: rgba(241,196,15,.15); color: var(--warn); }
.badge-err { background: rgba(231,76,60,.15); color: var(--danger, #e74c3c); }
.badge-danger { background: rgba(231,76,60,.15); color: var(--danger); }

.product-hero { display: grid; grid-template-columns: 200px 1fr; gap: 20px; }
@media (max-width: 640px) { .product-hero { grid-template-columns: 1fr; } }
.cover {
  width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 12px;
  background: #111; border: 1px solid var(--border);
}
.desc-html { line-height: 1.7; overflow-x: auto; }
.desc-html img { border-radius: 8px; margin: 8px 0; }
.order-box { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); max-width: min(720px, 100%); width: 100%; }
.variant-list { display: grid; gap: 10px; margin: 8px 0 14px; }
.variant-option {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  background: var(--card, transparent);
  font-weight: normal;
  transition: border-color .15s, box-shadow .15s;
}
.variant-option:has(input:checked),
.variant-option.is-selected {
  border-color: var(--accent, #4f8cff);
  box-shadow: 0 0 0 1px var(--accent, #4f8cff);
}
.variant-option input { margin: 0; flex-shrink: 0; }
.variant-option .variant-name {
  line-height: 1.45;
  word-break: break-word;
  min-width: 0;
}
.variant-option .variant-price {
  font-weight: 700;
  white-space: nowrap;
  text-align: right;
  min-width: 5.5rem;
  color: var(--price, #e11);
}
.product-hero { align-items: start; }


.auth-wrap { max-width: 420px; margin: 48px auto; }
.flash { padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; background: rgba(108,92,231,.2); }
.flash-ok { background: rgba(46,204,113,.15); color: var(--ok); }
.flash-err { background: rgba(231,76,60,.15); color: var(--danger); }

.card-out {
  background: #0b0d12; border: 1px dashed var(--accent2); border-radius: 10px;
  padding: 12px; white-space: pre-wrap; font-family: ui-monospace, monospace; font-size: .85rem;
}

.footer {
  border-top: 1px solid var(--border); color: var(--muted); text-align: center;
  padding: 24px 12px; font-size: .85rem;
}

/* CS widget */
.cs-fab {
  position: fixed; right: 20px; bottom: 20px; z-index: 80;
  width: 56px; height: 56px; border-radius: 50%; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff;
  font-size: 1.4rem; box-shadow: var(--shadow);
}
.cs-panel {
  display: none; position: fixed; right: 20px; bottom: 88px; width: min(360px, calc(100vw - 24px));
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  box-shadow: var(--shadow); z-index: 80; overflow: hidden;
}
.cs-panel.open { display: flex; flex-direction: column; height: 420px; }
.cs-head { padding: 12px 14px; background: #221a3a; font-weight: 600; display: flex; justify-content: space-between; }
.cs-body { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.cs-msg { background: var(--bg2); padding: 8px 10px; border-radius: 10px; font-size: .88rem; max-width: 90%; }
.cs-msg.bot { align-self: flex-start; border: 1px solid var(--border); }
.cs-msg.me { align-self: flex-end; background: rgba(108,92,231,.35); }
.cs-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--border); }
.cs-form input { flex: 1; }

/* Admin */
.admin-shell { display: grid; grid-template-columns: 200px 1fr; min-height: 100vh; }
.admin-nav { background: #12151e; border-right: 1px solid var(--border); padding: 16px; }
.admin-nav a { display: block; padding: 10px 12px; color: var(--muted); border-radius: 8px; margin-bottom: 4px; text-decoration: none; }
.admin-nav a:hover, .admin-nav a.active { background: #1e2435; color: #fff; }
.admin-main { padding: 20px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.stat .n { font-size: 1.6rem; font-weight: 700; }
.stat .l { color: var(--muted); font-size: .8rem; }
@media (max-width: 800px) { .admin-shell { grid-template-columns: 1fr; } }

.pay-flat-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin: 8px 0 4px;
  width: 100%;
}
.order-box { max-width: min(720px, 100%); }
.pay-option .pay-sub { white-space: normal; }
.pay-option {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 10px;
  margin: 0 !important;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  background: var(--bg2);
  font-weight: 500;
  line-height: 1.35;
}
.pay-option:has(input:checked),
.pay-option.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
  background: rgba(108,92,231,.12);
}
.pay-option.is-disabled {
  opacity: .55;
  cursor: not-allowed;
  border-style: dashed;
}
.pay-option .pay-body { flex: 1; min-width: 0; }
.pay-option .pay-title { display: block; font-weight: 650; color: var(--text); }
.pay-option .pay-sub { display: block; margin-top: 2px; color: var(--muted); font-size: .78rem; font-weight: 400; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }