/* ============ 设计系统 (jove风格) ============ */
:root {
  --bg: #0a0a0f;
  --bg-card: #131320;
  --bg-input: #1a1a2e;
  --text: #e8e8f0;
  --text-sub: #8888a0;
  --text-dim: #555570;
  --primary: #5b6ef5;
  --primary-dark: #4451d4;
  --primary-light: #7c8cff;
  --accent: #00d4aa;
  --accent-dark: #00b894;
  --danger: #ff4757;
  --warn: #ffa502;
  --border: #252540;
  --border-hover: #353560;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(91, 110, 245, 0.15);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

.container { max-width: 680px; margin: 0 auto; padding: 0 16px; }

/* ============ 顶部导航 ============ */
.navbar {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.navbar-inner {
  max-width: 680px; margin: 0 auto; padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  font-size: 18px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; gap: 20px; font-size: 14px; }
.nav-links a { color: var(--text-sub); transition: var(--transition); }
.nav-links a:hover { color: var(--text); }

/* ============ Hero ============ */
.hero {
  text-align: center;
  padding: 48px 16px 32px;
}
.hero h1 {
  font-size: 28px; font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--text-sub));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}
.hero p {
  color: var(--text-sub); font-size: 15px;
}

/* ============ 分类标签 ============ */
.cat-tabs {
  display: flex; gap: 8px; overflow-x: auto; padding: 0 0 20px;
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.cat-tabs::-webkit-scrollbar { display: none; }
.cat-tab {
  padding: 8px 16px; border-radius: 20px; border: 1px solid var(--border);
  background: var(--bg-card); font-size: 13px; color: var(--text-sub);
  white-space: nowrap; cursor: pointer; transition: var(--transition); flex-shrink: 0;
}
.cat-tab:hover { border-color: var(--border-hover); color: var(--text); }
.cat-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; border-color: transparent;
}

/* ============ 商品卡片 ============ */
.product-grid { display: grid; gap: 12px; padding-bottom: 60px; }
.product-card {
  background: var(--bg-card); border-radius: var(--radius); padding: 20px;
  border: 1px solid var(--border); transition: var(--transition); cursor: pointer;
  display: flex; align-items: center; gap: 16px; position: relative; overflow: hidden;
}
.product-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(91,110,245,0.05), transparent);
  opacity: 0; transition: var(--transition);
}
.product-card:hover {
  border-color: var(--primary); transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.product-card:hover::before { opacity: 1; }
.product-icon {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff;
}
.product-info { flex: 1; min-width: 0; position: relative; z-index: 1; }
.product-name { font-weight: 700; font-size: 16px; }
.product-desc { font-size: 13px; color: var(--text-sub); margin-top: 3px; }
.product-eta {
  font-size: 11px; color: var(--accent); margin-top: 6px;
  display: inline-block; padding: 2px 8px; border-radius: 6px;
  background: rgba(0, 212, 170, 0.1);
}
.product-eta.auto { color: var(--primary-light); background: rgba(91, 110, 245, 0.1); }
.product-price { text-align: right; flex-shrink: 0; position: relative; z-index: 1; }
.price-cny { font-size: 22px; font-weight: 800; color: var(--accent); }
.price-cny small { font-size: 13px; font-weight: 600; }
.price-usdt { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
.price-old { font-size: 12px; color: var(--text-dim); text-decoration: line-through; }

/* ============ 下单步骤 ============ */
.order-flow { padding-bottom: 60px; }
.flow-header {
  display: flex; align-items: center; gap: 12px; margin-bottom: 24px; cursor: pointer;
}
.flow-back {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-card); display: flex; align-items: center; justify-content: center;
  color: var(--text-sub); font-size: 18px; transition: var(--transition); flex-shrink: 0;
}
.flow-back:hover { border-color: var(--primary); color: var(--text); }
.flow-title { font-size: 18px; font-weight: 700; }
.flow-subtitle { font-size: 13px; color: var(--text-sub); }

/* 套餐选择 */
.plan-section { margin-bottom: 24px; }
.plan-label { font-size: 14px; font-weight: 600; color: var(--text-sub); margin-bottom: 12px; }
.plan-grid { display: grid; gap: 10px; }
.plan-card {
  background: var(--bg-card); border: 2px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; justify-content: space-between;
}
.plan-card:hover { border-color: var(--border-hover); }
.plan-card.active {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(91,110,245,0.08), var(--bg-card));
  box-shadow: 0 0 20px rgba(91,110,245,0.1);
}
.plan-card .plan-name { font-weight: 600; font-size: 15px; }
.plan-card .plan-price { text-align: right; }
.plan-card .plan-price .p-cny { font-size: 18px; font-weight: 800; color: var(--accent); }
.plan-card .plan-price .p-usdt { font-size: 11px; color: var(--text-dim); }
.plan-badge {
  display: inline-block; padding: 2px 8px; border-radius: 6px; font-size: 10px;
  font-weight: 700; background: var(--accent); color: #000; margin-left: 8px;
}

/* 步骤指示器 */
.steps { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 28px; }
.step-dot {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%; font-size: 14px; font-weight: 700;
  background: var(--bg-card); border: 2px solid var(--border); color: var(--text-dim);
  transition: var(--transition);
}
.step-dot.active { border-color: var(--primary); color: var(--primary-light); }
.step-dot.done { background: var(--primary); border-color: var(--primary); color: #fff; }
.step-line { width: 24px; height: 2px; background: var(--border); transition: var(--transition); }
.step-line.done { background: var(--primary); }

/* 表单 */
.card { background: var(--bg-card); border-radius: var(--radius); padding: 20px; border: 1px solid var(--border); margin-bottom: 16px; }
.card h3 { font-size: 15px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.card h3 .badge-auto {
  font-size: 10px; padding: 2px 8px; border-radius: 6px;
  background: rgba(91,110,245,0.15); color: var(--primary-light); font-weight: 600;
}
.field { margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-sub); }
.field label .req { color: var(--danger); }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; background: var(--bg-input); color: var(--text);
  transition: var(--transition);
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(91,110,245,0.1);
}
.field input::placeholder { color: var(--text-dim); }
.field .hint { font-size: 12px; color: var(--text-dim); margin-top: 4px; }

/* 支付方式 */
.pay-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pay-opt {
  border: 2px solid var(--border); border-radius: var(--radius-sm); padding: 14px;
  text-align: center; cursor: pointer; transition: var(--transition);
  font-size: 14px; font-weight: 600; background: var(--bg-input);
}
.pay-opt:hover { border-color: var(--border-hover); }
.pay-opt.active {
  border-color: var(--primary); background: rgba(91,110,245,0.08);
}
.pay-opt .pay-ico { font-size: 24px; display: block; margin-bottom: 4px; }

/* 按钮 */
.btn {
  display: block; width: 100%; padding: 15px; border: none; border-radius: var(--radius-sm);
  font-size: 16px; font-weight: 700; cursor: pointer; transition: var(--transition);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff;
}
.btn:hover { opacity: 0.92; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(91,110,245,0.3); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-outline { background: transparent; color: var(--primary-light); border: 2px solid var(--primary); }
.btn-sm { padding: 8px 16px; width: auto; font-size: 13px; border-radius: 8px; display: inline-block; }
.btn-danger { background: linear-gradient(135deg, var(--danger), #c0392b); }

/* 支付页 */
.pay-qr-wrap { text-align: center; padding: 20px 0; }
.pay-amount { font-size: 36px; font-weight: 800; color: var(--accent); margin: 10px 0; }
.pay-amount-usdt { font-size: 14px; color: var(--text-dim); margin-bottom: 16px; }
#qrcode { display: flex; justify-content: center; margin: 16px 0; }
#qrcode img, #qrcode canvas { border-radius: 12px; }
.usdt-box { background: var(--bg-input); border-radius: var(--radius-sm); padding: 16px; text-align: left; }
.usdt-box .row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.usdt-box .row:last-child { border: none; }
.usdt-box .val { font-weight: 600; word-break: break-all; text-align: right; max-width: 60%; }
.copy-btn { font-size: 12px; color: var(--primary-light); cursor: pointer; margin-left: 6px; }
.copy-btn:hover { color: var(--primary); }

/* 状态标签 */
.tag { display: inline-block; padding: 3px 10px; border-radius: 6px; font-size: 12px; font-weight: 600; }
.tag-unpaid { background: rgba(255,165,2,0.15); color: var(--warn); }
.tag-paid { background: rgba(91,110,245,0.15); color: var(--primary-light); }
.tag-fulfilled { background: rgba(0,212,170,0.15); color: var(--accent); }
.tag-failed { background: rgba(255,71,87,0.15); color: var(--danger); }
.tag-pending { background: rgba(91,110,245,0.1); color: var(--primary-light); }
.tag-processing { background: rgba(255,165,2,0.15); color: var(--warn); }
.tag-refunded { background: rgba(255,71,87,0.15); color: var(--danger); }
.tag-closed { background: rgba(85,85,112,0.2); color: var(--text-dim); }

/* 结果页 */
.result-wrap { text-align: center; padding: 40px 20px; }
.result-icon { font-size: 64px; margin-bottom: 16px; }
.result-title { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.result-desc { color: var(--text-sub); font-size: 14px; margin-bottom: 24px; }
.result-info {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; text-align: left; margin-bottom: 20px;
}
.result-info .row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.result-info .row:last-child { border: none; }
.result-info .label { color: var(--text-sub); }
.result-info .val { font-weight: 600; }

/* 后台 */
.admin-layout { max-width: 1100px; margin: 0 auto; padding: 20px 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.stat-card { background: var(--bg-card); border-radius: var(--radius); padding: 18px; border: 1px solid var(--border); }
.stat-card .num { font-size: 28px; font-weight: 800; }
.stat-card .label { font-size: 13px; color: var(--text-sub); margin-top: 4px; }
.stat-card.purple .num { color: var(--primary-light); }
.stat-card.green .num { color: var(--accent); }
.stat-card.orange .num { color: var(--warn); }
.stat-card.red .num { color: var(--danger); }

table.data-table { width: 100%; border-collapse: collapse; background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.data-table th, .data-table td { padding: 12px; text-align: left; font-size: 13px; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--bg-input); font-weight: 700; color: var(--text-sub); white-space: nowrap; }
.data-table tr:hover { background: rgba(91,110,245,0.03); }
.data-table td { vertical-align: top; color: var(--text); }

.toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select { padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; background: var(--bg-input); color: var(--text); }

.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; z-index: 200; padding: 16px; }
.modal-mask.show { display: flex; }
.modal { background: var(--bg-card); border-radius: var(--radius); padding: 24px; max-width: 460px; width: 100%; max-height: 90vh; overflow-y: auto; border: 1px solid var(--border); }
.modal h3 { margin-bottom: 16px; }

/* TG 提示框 */
.tg-notice {
  background: linear-gradient(135deg, rgba(91,110,245,0.08), rgba(0,212,170,0.05));
  border: 1px solid rgba(91,110,245,0.2); border-radius: var(--radius-sm);
  padding: 14px; margin-bottom: 16px; font-size: 13px; color: var(--text-sub);
  display: flex; gap: 10px; align-items: flex-start;
}
.tg-notice .icon { font-size: 18px; flex-shrink: 0; }
.tg-notice a { color: var(--primary-light); text-decoration: underline; }

/* 加载动画 */
.loading-dots { display: inline-flex; gap: 4px; }
.loading-dots span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--text-sub);
  animation: bounce 1.4s infinite ease-in-out both;
}
.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .pay-options { grid-template-columns: 1fr 1fr; }
  .data-table { font-size: 12px; }
  .data-table th, .data-table td { padding: 8px 6px; }
  .hero h1 { font-size: 22px; }
  .hero { padding: 32px 16px 24px; }
}