:root {
  --primary: #0070ba;
  --primary-dark: #003087;
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1c2333;
  --muted: #6b7280;
  --border: #e3e6ee;
  --danger: #b02a2a;
  --success: #0a7a3a;
  --radius: 14px;
  --shadow: 0 4px 18px rgba(20, 30, 60, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container { width: 100%; max-width: 980px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 560px; }

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-size: 18px; font-weight: 700; color: var(--primary-dark); text-decoration: none; cursor: pointer; }
.nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.nav a, .nav button.linklike {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  font-size: 14px;
  background: none;
  border: none;
}
.nav a:hover, .nav button.linklike:hover { background: var(--bg); }
.nav .badge {
  background: var(--primary);
  color: #fff;
  border-radius: 999px;
  font-size: 12px;
  padding: 1px 7px;
  margin-left: 4px;
}
.nav strong { font-size: 14px; }

main { flex: 1; padding: 32px 16px 48px; }
.page-title { font-size: 24px; margin-bottom: 6px; }
.muted { color: var(--muted); font-size: 14px; margin-bottom: 20px; }

.view[hidden] { display: none; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.product-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.product-card h3 { font-size: 17px; }
.product-card .desc { color: var(--muted); font-size: 13.5px; flex: 1; min-height: 36px; }
.price { font-size: 22px; font-weight: 700; color: var(--primary-dark); }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 16px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 15px;
  cursor: pointer;
  transition: filter 0.15s;
}
.btn:hover { filter: brightness(1.08); }
.btn.primary { background: var(--primary); color: #fff; }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn.danger { background: var(--danger); color: #fff; }
.btn.block { display: block; width: 100%; margin-top: 12px; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.form label { display: block; font-size: 14px; margin-bottom: 14px; }
.form input, .form textarea {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--primary); }

.form-card { max-width: 420px; margin: 24px auto; }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tab {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--border);
  background: none;
  border-radius: 10px;
  font-size: 15px;
  cursor: pointer;
}
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.message { margin-top: 12px; font-size: 14px; color: var(--success); }
.error { margin-top: 12px; font-size: 14px; color: var(--danger); word-break: break-all; }
.hint { margin-top: 10px; font-size: 12.5px; color: var(--muted); }

.cart-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
}
.cart-item .info { flex: 1; }
.cart-item .info h4 { font-size: 15px; margin-bottom: 4px; }
.qty-controls { display: flex; align-items: center; gap: 10px; }
.qty-controls button {
  width: 28px; height: 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  font-size: 15px;
}
.total-row { display: flex; justify-content: space-between; font-size: 16px; padding: 8px 2px; }
.total-row strong { font-size: 19px; color: var(--primary-dark); }

.sandbox-tag {
  display: inline-block;
  background: #ffd140;
  color: #5c4400;
  font-size: 12.5px;
  padding: 3px 12px;
  border-radius: 999px;
  margin: 4px 0 14px;
}

#paypal-buttons { min-height: 130px; margin-top: 8px; }

.order-item {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  margin-bottom: 12px;
  font-size: 14px;
}
.order-item .head { display: flex; justify-content: space-between; margin-bottom: 6px; }
.status { padding: 2px 10px; border-radius: 999px; font-size: 12px; }
.status.CREATED { background: #fff3cd; color: #7a5b00; }
.status.COMPLETED { background: #d9f2e3; color: var(--success); }
.status.FAILED, .status.REFUNDED, .status.REVERSED { background: #fdecec; color: var(--danger); }

.admin-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 14px 18px; margin-bottom: 10px; font-size: 14px;
}
.inactive { opacity: 0.55; }

.empty { text-align: center; color: var(--muted); padding: 40px 0; }

.site-footer { padding: 18px 16px 26px; text-align: center; font-size: 12.5px; }