/* SPOLITE 主样式 - 深色科技感 + 橙色强调 */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2234;
  --bg-card-hover: #222c42;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #ff6b1a;
  --accent-hover: #ff8533;
  --accent-light: rgba(255, 107, 26, 0.15);
  --border: #2a3548;
  --success: #22c55e;
  --warning: #eab308;
  --danger: #ef4444;
  --info: #3b82f6;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
  --max-width: 1280px;
}

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

body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-family: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 15px;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== 导航栏 ===== */
.navbar {
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar-brand {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar-brand .dot { color: var(--accent); }
.navbar-menu { display: flex; align-items: center; gap: 8px; list-style: none; }
.navbar-menu a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
}
.navbar-menu a:hover, .navbar-menu a.active {
  color: var(--text-primary);
  background: var(--bg-card);
}
.navbar-actions { display: flex; align-items: center; gap: 12px; }
.lang-switcher {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #0a0e17 0%, #111d35 50%, #0a0e17 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 26, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content { position: relative; z-index: 1; max-width: 640px; }
.hero-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 区块 ===== */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-secondary); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 产品卡片 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.product-image {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  display: block;
  background: var(--bg-secondary);
}
.product-body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; padding: 20px; }
.product-category {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.product-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.product-sku { font-size: 12px; color: var(--text-muted); }
.product-views { font-size: 12px; color: var(--text-muted); }

/* ===== 新闻卡片 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-image { width: 100%; height: 180px; object-fit: cover; background: var(--bg-secondary); }
.news-body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; padding: 20px; }
.news-date { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }
.news-title { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); }
.news-excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.5; }

/* ===== 表单 ===== */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-error { color: var(--danger); font-size: 13px; margin-top: 4px; }
.form-hint { color: var(--text-muted); font-size: 12px; margin-top: 4px; }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  background: var(--bg-card);
  color: var(--text-secondary);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--bg-card); }

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-warning { background: rgba(234, 179, 8, 0.15); color: var(--warning); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--info); }
.badge-accent { background: var(--accent-light); color: var(--accent); }

/* ===== 分页 ===== */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 32px; list-style: none; }
.pagination a, .pagination span {
  padding: 8px 14px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  transition: var(--transition);
}
.pagination a:hover { border-color: var(--accent); color: var(--accent); }
.pagination .active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
  margin-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.footer-brand { font-size: 22px; font-weight: 800; margin-bottom: 12px; letter-spacing: 2px; }
.footer-brand .dot { color: var(--accent); }
.footer-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  background: var(--bg-card);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  font-size: 16px;
}
.footer-social a:hover { background: var(--accent); color: #fff; }
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--text-secondary); font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { color: var(--text-muted); font-size: 13px; }

/* ===== 后台管理布局 ===== */
.admin-layout { display: flex; min-height: calc(100vh - 64px); }
.admin-sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  flex-shrink: 0;
}
.admin-sidebar-nav { list-style: none; }
.admin-sidebar-nav li a {
  display: block;
  padding: 10px 24px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: var(--transition);
}
.admin-sidebar-nav li a:hover, .admin-sidebar-nav li a.active {
  color: var(--accent);
  background: var(--accent-light);
  border-left-color: var(--accent);
}
.admin-sidebar-section {
  padding: 16px 24px 8px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.admin-content { flex: 1; padding: 32px; overflow-x: auto; }
.admin-page-title { font-size: 24px; font-weight: 800; margin-bottom: 24px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.stat-label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.stat-value { font-size: 32px; font-weight: 800; color: var(--text-primary); }
.stat-change { font-size: 12px; margin-top: 8px; }
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ===== 详情页 ===== */
.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}
.detail-title { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.detail-meta { color: var(--text-secondary); font-size: 14px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.detail-image { width: 100%; border-radius: var(--radius-lg); overflow: hidden; }
.detail-section { margin-bottom: 32px; }
.detail-section h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.spec-table { width: 100%; }
.spec-table td { padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.spec-table td:first-child { color: var(--text-muted); width: 40%; }

/* ===== 论坛 ===== */
.forum-list { list-style: none; }
.forum-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}
.forum-item:hover { border-color: var(--accent); }
.forum-item-title { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.forum-item-desc { font-size: 13px; color: var(--text-secondary); }
.forum-item-stats { display: flex; gap: 24px; text-align: center; }
.forum-stat-num { font-size: 18px; font-weight: 700; color: var(--accent); }
.forum-stat-label { font-size: 11px; color: var(--text-muted); }

.thread-list { list-style: none; }
.thread-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}
.thread-item:hover { border-color: var(--accent); }
.thread-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.thread-meta { font-size: 12px; color: var(--text-muted); }
.thread-stats { display: flex; gap: 20px; font-size: 13px; color: var(--text-secondary); }

.post-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
}
.post-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.post-author { font-weight: 600; font-size: 14px; }
.post-date { font-size: 12px; color: var(--text-muted); }
.post-content { font-size: 14px; line-height: 1.7; color: var(--text-primary); white-space: pre-wrap; }

/* ===== 消息提示 ===== */
.alert {
  padding: 14px 20px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 14px;
}
.alert-success { background: rgba(34, 197, 94, 0.1); border: 1px solid var(--success); color: var(--success); }
.alert-error { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--danger); color: var(--danger); }
.alert-warning { background: rgba(234, 179, 8, 0.1); border: 1px solid var(--warning); color: var(--warning); }
.alert-info { background: rgba(59, 130, 246, 0.1); border: 1px solid var(--info); color: var(--info); }

/* ===== 认证页面 ===== */
.auth-page {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow);
}
.auth-title { font-size: 24px; font-weight: 800; text-align: center; margin-bottom: 8px; }
.auth-subtitle { text-align: center; color: var(--text-secondary); font-size: 14px; margin-bottom: 32px; }
.auth-footer { text-align: center; margin-top: 24px; font-size: 14px; color: var(--text-secondary); }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); padding: 16px 0; }
  .admin-content { padding: 20px; }
  .navbar-menu { display: none; }
}