/* ============================================
   短域名注册系统 - 主样式表 (v2.0 精致版)
   ============================================ */

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* 主色调 */
  --primary: #4f6ef7;
  --primary-dark: #3b5bdb;
  --primary-light: #a5b8ff;
  --primary-bg: rgba(79, 110, 247, 0.08);
  --secondary: #7b5cf6;
  --gradient: linear-gradient(135deg, #4f6ef7, #7b5cf6);
  --gradient-soft: linear-gradient(135deg, #667eea, #764ba2);
  --gradient-warm: linear-gradient(135deg, #f093fb, #f5576c);
  
  /* 状态色 */
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.1);
  
  /* 中性色 */
  --dark: #0f172a;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* 尺寸 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);
  --shadow-glow: 0 0 20px rgba(79,110,247,.15);

  --transition: all .2s cubic-bezier(.4,0,.2,1);
  --transition-slow: all .35s cubic-bezier(.4,0,.2,1);
  --sidebar-w: 250px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--gray-50);
  color: var(--gray-700);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--gray-900); letter-spacing: -0.02em; }
h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
.text-center { text-align: center; }
.text-muted { color: var(--gray-400); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }

/* ===== Layout ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 640px; margin: 0 auto; padding: 0 24px; }
.py-2 { padding: 8px 0; }
.py-4 { padding: 24px 0; }
.py-8 { padding: 48px 0; }
.py-12 { padding: 72px 0; }
.py-16 { padding: 96px 0; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 24px; }
.mt-8 { margin-top: 48px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 24px; }

/* ===== Navbar ===== */
.navbar {
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--dark);
  text-decoration: none;
}
.navbar-brand:hover { color: var(--dark); }
.navbar-brand .logo {
  width: 34px; height: 34px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 2px 8px rgba(79,110,247,.3);
}
.navbar-brand .logo-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.navbar-nav a {
  color: var(--gray-600);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
}
.navbar-nav a:hover { color: var(--primary); background: var(--primary-bg); }
.navbar-nav a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
.navbar-nav .btn-primary { color: #fff; padding: 8px 18px; }
.navbar-nav .btn-primary:hover { color: #fff; }

.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 190px;
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(.96);
  transition: var(--transition-slow);
  z-index: 200;
  border: 1px solid var(--gray-100);
}
.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.dropdown-menu a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--gray-600);
  font-size: 0.875rem;
  text-decoration: none;
}
.dropdown-menu a:hover { background: var(--gray-50); color: var(--primary); }

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, #2563eb 0%, #4f46e5 40%, #7c3aed 100%);
  color: #fff;
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,255,255,.1) 0%, transparent 70%),
              radial-gradient(ellipse 60% 50% at 80% 100%, rgba(255,255,255,.06) 0%, transparent 60%),
              radial-gradient(ellipse 50% 40% at 20% 100%, rgba(255,255,255,.04) 0%, transparent 50%);
  pointer-events: none;
}
.hero-bg-circle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.hero-bg-a {
  top: -200px; right: -120px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,.04) 0%, transparent 70%);
}
.hero-bg-b {
  bottom: -180px; left: -80px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,.03) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 1; text-align: center; }
.hero h1 {
  color: #fff;
  font-size: 3rem;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, #93c5fd, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.7);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.hero-checks {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.hero-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .88rem;
  color: rgba(255,255,255,.9);
  background: rgba(255,255,255,.1);
  padding: 8px 16px;
  border-radius: 20px;
}
.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}
.btn-cta-outline {
  background: rgba(255,255,255,.12);
  color: #fff;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: var(--transition);
  text-decoration: none;
  font-size: .95rem;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.15);
}
.btn-cta-outline:hover {
  background: rgba(255,255,255,.2);
  color: #fff;
  transform: translateY(-1px);
}
.btn-cta-link {
  color: rgba(255,255,255,.7);
  font-size: .9rem;
  transition: var(--transition);
  text-decoration: none;
}
.btn-cta-link:hover { color: #fff; }

/* ===== Domain Search Box ===== */
.search-box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 6px;
  display: flex;
  gap: 6px;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: 0 8px 32px rgba(0,0,0,.15);
}
.search-select {
  border: none;
  padding: 14px 18px;
  font-size: 0.95rem;
  background: var(--gray-100);
  border-radius: 10px;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  min-width: 150px;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.search-select option { color: var(--gray-800); background: #fff; }
.search-input {
  flex: 1;
  border: none;
  padding: 14px 18px;
  font-size: 1rem;
  outline: none;
  color: var(--gray-800);
  background: transparent;
}
.search-input::placeholder { color: var(--gray-400); }
.search-sep {
  display: flex;
  align-items: center;
  color: var(--gray-300);
  font-size: 1.3rem;
  font-weight: 700;
  user-select: none;
}
.btn-search {
  padding: 14px 28px;
  font-size: .95rem;
  border-radius: 10px;
  white-space: nowrap;
  background: var(--gradient) !important;
  color: #fff !important;
  font-weight: 700;
}
.btn-search:hover { opacity: .9 !important; color: #fff !important; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  font-family: inherit;
  line-height: 1.4;
}
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 2px 8px rgba(79,110,247,.25); }
.btn-primary:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(79,110,247,.35); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); }
.btn-secondary:hover { background: var(--gray-200); }
.btn-success { background: var(--success); color: #fff; box-shadow: 0 2px 8px rgba(16,185,129,.25); }
.btn-success:hover { color: #fff; opacity: .9; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { color: #fff; opacity: .9; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { color: #fff; opacity: .9; }
.btn-outline { background: transparent; border: 1.5px solid var(--gray-200); color: var(--gray-600); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; border-radius: 6px; }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ===== Cards ===== */
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-body { padding: 24px; }
.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h3 { margin: 0; font-size: 1.05rem; }

/* ===== Domain Cards Grid ===== */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}
.domain-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 28px;
  transition: var(--transition-slow);
  border: 1px solid var(--gray-100);
  position: relative;
  overflow: hidden;
}
.domain-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
}
.domain-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(79,110,247,.15);
  transform: translateY(-4px);
}
.domain-card:hover::before { opacity: 1; }
.domain-card .domain-name {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.domain-card .domain-desc {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin-bottom: 16px;
  min-height: 40px;
  line-height: 1.6;
}
.domain-card .domain-meta {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  margin-bottom: 16px;
  align-items: center;
}
.domain-card .domain-meta .badge {
  padding: 1px 6px !important;
  font-size: 0.6rem !important;
  white-space: nowrap;
  line-height: 1.4;
}
.domain-card .domain-actions { display: flex; gap: 8px; }

/* ===== Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}
.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-secondary { background: rgba(100,116,139,.1); color: var(--gray-500); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-purple { background: rgba(123,92,246,.1); color: var(--secondary); }

/* ===== Forms ===== */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.875rem;
  color: var(--gray-700);
}
.form-group .hint { font-weight: 400; color: var(--gray-400); font-size: 0.8rem; }
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: var(--transition);
  font-family: inherit;
  background: #fff;
  color: var(--gray-800);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.1);
}
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.form-row { display: flex; gap: 16px; }
.form-row > .form-group { flex: 1; }
.form-suffix-group {
  display: flex;
  align-items: stretch;
}
.form-suffix-group .form-control {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}
.form-suffix-group .input-suffix {
  padding: 10px 14px;
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-left: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--gray-500);
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  display: flex;
  align-items: center;
}

/* ===== Alert / Flash ===== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: alertSlideIn .3s ease;
}
@keyframes alertSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.alert-success { background: var(--success-bg); border: 1px solid rgba(16,185,129,.2); color: #065f46; }
.alert-danger { background: var(--danger-bg); border: 1px solid rgba(239,68,68,.2); color: #991b1b; }
.alert-warning { background: var(--warning-bg); border: 1px solid rgba(245,158,11,.2); color: #92400e; }
.alert-info { background: var(--info-bg); border: 1px solid rgba(59,130,246,.2); color: #1e40af; }

/* ===== Tables ===== */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.table th {
  background: var(--gray-50);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--gray-500);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}
.table tbody tr { transition: var(--transition); }
.table tbody tr:hover { background: var(--gray-50); }
.table .domain-cell { font-weight: 700; color: var(--primary); }

/* ===== Stats Cards ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.stat-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  border: 1px solid var(--gray-100);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: rgba(79,110,247,.1); }
.stat-card .stat-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.stat-card .stat-icon.bg-primary { background: var(--primary-bg); }
.stat-card .stat-icon.bg-success { background: var(--success-bg); }
.stat-card .stat-icon.bg-warning { background: var(--warning-bg); }
.stat-card .stat-icon.bg-danger { background: var(--danger-bg); }
.stat-card .stat-icon.bg-info { background: var(--info-bg); }
.stat-card .stat-icon.bg-purple { background: rgba(123,92,246,.1); }
.stat-card .stat-value { font-size: 1.75rem; font-weight: 800; color: var(--gray-900); line-height: 1.2; }
.stat-card .stat-label { font-size: 0.8rem; color: var(--gray-400); margin-top: 2px; }

/* ===== Pagination ===== */
.pagination {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-top: 24px;
  flex-wrap: wrap;
}
.pagination .page-link {
  padding: 8px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  color: var(--gray-600);
  font-size: 0.875rem;
  font-weight: 500;
  background: #fff;
  transition: var(--transition);
  text-decoration: none;
}
.pagination .page-link:hover { border-color: var(--primary); color: var(--primary); }
.pagination .page-link.active { background: var(--gradient); color: #fff; border-color: transparent; box-shadow: 0 2px 8px rgba(79,110,247,.25); }
.pagination .page-ellipsis { padding: 8px 4px; color: var(--gray-300); }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-400);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 12px; opacity: .6; }

/* ===== Auth Pages ===== */
.auth-page {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, #f0f4ff 0%, #f5f0ff 100%);
}
.auth-card {
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 48px 40px;
  max-width: 440px;
  width: 100%;
  border: 1px solid var(--gray-100);
}
.auth-card h2 { text-align: center; margin-bottom: 8px; font-size: 1.5rem; }
.auth-card .subtitle { text-align: center; color: var(--gray-400); margin-bottom: 32px; font-size: 0.9rem; }
.auth-card .auth-footer { text-align: center; margin-top: 24px; font-size: 0.875rem; color: var(--gray-500); }

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: var(--gray-400);
  padding: 48px 0 24px;
  margin-top: 80px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
.footer-inner h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-inner a { color: var(--gray-400); display: block; padding: 5px 0; font-size: 0.875rem; text-decoration: none; transition: var(--transition); }
.footer-inner a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 20px 24px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
  font-size: 0.8rem;
}

/* ===== 友情链接 ===== */
.friendlinks-section { padding: 40px 0; background: #f8f9fc; border-top: 1px solid #eef0f5; }
.friendlinks-section .section-header { margin-bottom: 24px; }
.friendlinks-section .section-header h2 { font-size: 1.15rem; }
.friendlinks-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.friendlink-item {
  display: inline-block;
  padding: 8px 18px;
  background: #fff;
  border: 1px solid #e8ecf2;
  border-radius: 8px;
  font-size: .85rem;
  color: var(--gray-500);
  text-decoration: none;
  transition: all .2s;
}
.friendlink-item:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(79,110,247,.1);
  transform: translateY(-1px);
}

/* ===== Admin Stats Cards (统一统计卡片) ===== */
.admin-stats { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.admin-stat {
  flex: 1; min-width: 140px;
  background: #fff; border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
}
.admin-stat .num { font-size: 1.5rem; font-weight: 800; line-height: 1.2; }
.admin-stat .lbl { font-size: .8rem; color: var(--gray-400); margin-top: 2px; }
.admin-stat-lg { flex: 1.5; }
.admin-stat .num-lg { font-size: 1.75rem; }

/* ===== Admin Utility Classes ===== */
.th-seq { width: 50px !important; }
.td-center { text-align: center !important; }
.td-seq { text-align: center !important; color: var(--gray-400) !important; font-size: .85rem !important; }
.empty-cell { padding: 40px !important; text-align: center !important; color: var(--gray-400) !important; }
.monospace { font-family: monospace !important; }
.mono-sm { font-family: monospace !important; font-size: .75rem !important; }
.text-warning { color: var(--warning) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-primary { color: var(--primary) !important; }
.font-bold { font-weight: 700 !important; }
.font-semibold { font-weight: 600 !important; }
.wrap-gap { flex-wrap: wrap !important; gap: 12px !important; }
.w-auto { width: auto !important; }
.search-input-sm { width: 220px !important; }
.search-input-xs { width: 160px !important; }
.nowrap { white-space: nowrap !important; }
.flex-col-gap { flex-direction: column !important; gap: 4px !important; }
.align-center { align-items: center !important; }
.text-ellipsis { overflow: hidden !important; text-overflow: ellipsis !important; white-space: nowrap !important; }

/* ===== Steps Section ===== */
.steps-section { padding: 80px 0; background: #fff; }
.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  margin-bottom: 24px;
}
.step-card {
  flex: 1;
  max-width: 320px;
  text-align: center;
  padding: 32px 24px;
}
.step-number {
  width: 56px; height: 56px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(79,110,247,.25);
}
.step-card h4 { margin-bottom: 10px; color: var(--gray-900); }
.step-card p { color: var(--gray-500); font-size: .9rem; line-height: 1.7; }
.step-spacer {
  color: var(--gray-200);
  font-size: 1.8rem;
  font-weight: 700;
  padding-top: 44px;
  display: flex;
  align-items: center;
}
.steps-note {
  text-align: center;
  color: var(--gray-400);
  font-size: .88rem;
  margin-top: 8px;
}

/* ===== Stats Section ===== */
.stats-section {
  padding: 8px 0 60px;
  background: var(--gray-50);
}

/* ===== Partner Section ===== */
.partner-card:hover { transform:translateY(-4px); box-shadow:0 12px 32px rgba(0,0,0,.15) !important; }
.plan-card:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(0,0,0,.1) !important; border-color:var(--primary) !important; }
.partner-section .section-header, .plans-section .section-header { margin-bottom:32px; }
@media (max-width: 480px) { .partner-grid { grid-template-columns: 1fr 1fr !important; gap: 10px !important; } }

/* ===== Advantages Section ===== */
.advantages-section { padding: 80px 0; background: #fff; }
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.advantage-card {
  padding: 32px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
  background: #fff;
  transition: var(--transition-slow);
  position: relative;
}
.advantage-card:hover {
  border-color: rgba(79,110,247,.2);
  box-shadow: 0 8px 24px rgba(79,110,247,.08);
  transform: translateY(-3px);
}
.advantage-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.advantage-card h4 { font-size: 1rem; margin-bottom: 8px; color: var(--gray-900); }
.advantage-card p { color: var(--gray-500); font-size: .88rem; line-height: 1.7; }

/* ===== FAQ Section ===== */
.faq-section { padding: 80px 0; background: var(--gray-50); }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--gray-100);
}
.faq-q {
  padding: 20px 24px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--gray-800);
  user-select: none;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q::after {
  content: '▾';
  font-size: .8rem;
  color: var(--gray-300);
  transition: var(--transition);
}
.faq-item.active .faq-q::after { transform: rotate(180deg); color: var(--primary); }
.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all .3s ease;
  color: var(--gray-500);
  font-size: .9rem;
  line-height: 1.7;
}
.faq-item.active .faq-a { padding: 0 24px 20px; max-height: 300px; }
.faq-item.active .faq-q { color: var(--primary); }

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #2563eb 0%, #4f46e5 50%, #7c3aed 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(79,110,247,.12) 0%, transparent 60%);
  pointer-events: none;
}
.cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 8px; position: relative; }
.cta-section p { color: rgba(255,255,255,.7); font-size: 1.05rem; margin-bottom: 32px; position: relative; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; position: relative; }
.cta-buttons .btn-outline { border-color: rgba(255,255,255,.3); color: #fff; }
.cta-buttons .btn-outline:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.1); }

/* ===== Section Headers ===== */
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 1.75rem; margin-bottom: 12px; }
.section-header .section-desc { color: var(--gray-400); max-width: 600px; margin: 0 auto; font-size: .95rem; line-height: 1.7; }

.domains-section { padding: 0 0 32px; }
.domains-section .section-header { padding-top: 56px; margin-bottom: 8px; }

/* ===== Domain Card Header ===== */
.domain-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.domain-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(16,185,129,.4);
}

/* ===== Domain Result ===== */
.domain-check-result {
  margin-top: 16px;
  padding: 16px 20px;
  border-radius: var(--radius);
  display: none;
}
.domain-check-result.show { display: block; animation: alertSlideIn .3s ease; }
.domain-check-result.available { background: var(--success-bg); border: 1px solid rgba(16,185,129,.2); }
.domain-check-result.taken { background: var(--danger-bg); border: 1px solid rgba(239,68,68,.2); }
.domain-check-result.invalid { background: var(--warning-bg); border: 1px solid rgba(245,158,11,.2); }
.domain-check-result .result-domain { font-size: 1.1rem; font-weight: 700; }
.domain-check-result.available .result-domain { color: var(--success); }
.domain-check-result.taken .result-domain { color: var(--danger); }
.domain-check-result.invalid .result-domain { color: var(--warning); }
.domain-check-result .result-actions { margin-top: 12px; }

/* ===== DNS Record Row ===== */
.dns-record-row {
  display: grid;
  grid-template-columns: 100px 120px 1fr 80px 80px 60px;
  gap: 8px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
}
.dns-record-row .form-control { padding: 6px 10px; font-size: 0.85rem; }
.dns-record-row .dns-actions { display: flex; gap: 4px; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(2px);
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal {
  background: #fff;
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(.95);
  transition: var(--transition-slow);
}
.modal-overlay.show .modal { transform: scale(1); }
.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 { margin: 0; }
.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gray-400);
  padding: 4px;
  line-height: 1;
  transition: var(--transition);
}
.modal-close:hover { color: var(--gray-700); }
.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== Admin Layout ===== */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  display: flex;
  flex-direction: column;
  width: var(--sidebar-w);
  background: var(--dark);
  color: #fff;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 1000;
  transition: var(--transition);
}
.admin-sidebar .sidebar-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  font-size: 1.1rem;
  font-weight: 800;
}
.admin-sidebar .sidebar-header .logo {
  width: 32px; height: 32px;
  background: var(--gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.sidebar-nav { padding: 12px 0; flex: 1; overflow-y: auto; }
.admin-user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-top: 1px solid rgba(255,255,255,.08);
  flex-shrink: 0;
  background: rgba(0,0,0,.2);
}
.admin-user-info .avatar { flex-shrink: 0; }
.admin-user-detail { min-width: 0; flex: 1; }
.admin-user-detail > div:first-child {
  color: #fff;
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.admin-user-detail > div:last-child {
  color: rgba(255,255,255,.4);
  font-size: .7rem;
}
.admin-user-info a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  color: rgba(255,255,255,.5);
  transition: var(--transition);
  text-decoration: none;
  flex-shrink: 0;
}
.admin-user-info a:hover {
  color: #fff;
  background: rgba(231,76,60,.2);
}
.sidebar-nav .nav-section {
  padding: 16px 24px 4px;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: rgba(255,255,255,.25);
  letter-spacing: 1px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  color: rgba(255,255,255,.5);
  font-size: 0.9rem;
  transition: var(--transition);
  border-left: 3px solid transparent;
  text-decoration: none;
}
.sidebar-nav a:hover { color: #fff; background: rgba(255,255,255,.05); }
.sidebar-nav a.active { color: #fff; background: rgba(79,110,247,.15); border-left-color: var(--primary); }
.sidebar-nav a .nav-icon { font-size: 1.1rem; width: 20px; text-align: center; }



.admin-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.admin-topbar {
  height: 64px;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.admin-topbar .page-title { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); }
.admin-topbar .topbar-actions { display: flex; align-items: center; gap: 12px; }
.admin-content { padding: 24px; flex: 1; }

.admin-login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2563eb 0%, #4f46e5 50%, #7c3aed 100%);
  padding: 20px;
}
.admin-login-page .auth-card { background: rgba(255,255,255,.08); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,.12); }
.admin-login-page .auth-card h2 { color: #fff; }
.admin-login-page .auth-card .subtitle { color: rgba(255,255,255,.6); }
.admin-login-page .form-control { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.15); color: #fff; }
.admin-login-page .form-control::placeholder { color: rgba(255,255,255,.35); }
.admin-login-page .form-control:focus { border-color: rgba(255,255,255,.3); box-shadow: 0 0 0 3px rgba(255,255,255,.08); }
.admin-login-page .form-group label { color: rgba(255,255,255,.8); }
.admin-login-page .btn-primary { background: #fff; color: var(--primary); box-shadow: none; }

/* ===== Utility ===== */
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.hidden { display: none !important; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ===== User Dashboard ===== */
.dash-wrap { display:flex; gap:28px; max-width:1200px; margin:28px auto; padding:0 24px; min-height:calc(100vh - 200px); }
.dash-sidebar { width:220px; flex-shrink:0; background:#fff; border-radius:16px; box-shadow:0 2px 16px rgba(0,0,0,.06); border:1px solid var(--gray-100); overflow:hidden; align-self:flex-start; position:sticky; top:88px; }
.dash-user-head { background:linear-gradient(135deg,#667eea,#764ba2); padding:24px 20px; text-align:center; }
.dash-avatar { width:56px; height:56px; border-radius:50%; background:rgba(255,255,255,.2); display:flex; align-items:center; justify-content:center; margin:0 auto 10px; font-size:1.4rem; font-weight:800; color:#fff; }
.dash-user-info { color:#fff; }
.dash-user-name { font-weight:700; font-size:1rem; }
.dash-user-uid { font-size:.75rem; opacity:.7; margin-top:2px; }
.dash-nav { padding:12px 0; }
.dash-nav-item { display:flex; align-items:center; gap:10px; padding:11px 20px; font-size:.9rem; color:var(--gray-600); text-decoration:none; transition:all .15s; border-left:3px solid transparent; }
.dash-nav-item:hover { background:var(--gray-50); color:var(--primary); }
.dash-nav-item.active { background:rgba(79,110,247,.07); color:var(--primary); border-left-color:var(--primary); font-weight:600; }
.dash-nav-icon { font-size:1.1rem; width:24px; text-align:center; flex-shrink:0; }
.dash-nav-divider { height:1px; background:var(--gray-100); margin:8px 16px; }
.dash-nav-logout { color:var(--danger) !important; }
.dash-nav-logout:hover { background:rgba(239,68,68,.06) !important; }

.dash-main { flex:1; min-width:0; }
.dash-welcome { background:linear-gradient(135deg,#667eea,#764ba2); border-radius:16px; padding:32px 36px; display:flex; align-items:center; justify-content:space-between; margin-bottom:24px; }
.dash-welcome-text h2 { color:#fff; font-size:1.5rem; font-weight:700; margin:0; }
.dash-welcome-text p { color:rgba(255,255,255,.7); font-size:.9rem; margin-top:4px; }

.dash-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-bottom:24px; }
.dash-stat { background:#fff; border-radius:14px; padding:20px; display:flex; align-items:center; gap:16px; box-shadow:0 2px 12px rgba(0,0,0,.04); border:1px solid var(--gray-100); transition:transform .15s,box-shadow .15s; }
.dash-stat:hover { transform:translateY(-2px); box-shadow:0 4px 20px rgba(0,0,0,.08); }
.dash-stat-icon { width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:1.3rem; flex-shrink:0; }
.dash-stat-num { font-size:1.6rem; font-weight:800; line-height:1.2; color:var(--gray-900); }
.dash-stat-lbl { font-size:.8rem; color:var(--gray-400); margin-top:1px; }

.dash-card { border-radius:14px; overflow:hidden; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar-nav { display: none; }
  .navbar-nav.mobile-show { display: flex; position: absolute; top: 64px; left: 0; right: 0; background: rgba(255,255,255,.98); backdrop-filter: blur(12px); flex-direction: column; padding: 12px; box-shadow: var(--shadow-md); border-bottom: 1px solid var(--gray-100); }
  .hero { padding: 60px 0 50px; }
  .hero h1 { font-size: 1.75rem; }
  .hero .hero-sub { font-size: .95rem; }
  .hero-checks { flex-direction: column; align-items: center; gap: 8px; }
  .hero-check { font-size: .8rem; width: 100%; max-width: 300px; justify-content: center; }
  .search-box { flex-direction: column; border-radius: var(--radius); padding: 8px; }
  .search-sep { display: none; }
  .search-select { min-width: auto; }
  .hero-ctas { flex-direction: column; gap: 8px; }
  .domain-grid { grid-template-columns: repeat(2, 1fr); margin-top: 24px; }
  .steps-grid { flex-direction: column; align-items: center; }
  .step-spacer { transform: rotate(90deg); padding: 8px 0; }
  .step-card { max-width: 100%; }
  .partner-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 12px !important; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .form-row { flex-direction: column; gap: 0; }
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.mobile-show { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .dash-wrap { flex-direction:column; }
  .dash-sidebar { width:100% !important; position:static; }
  .dash-sidebar .dash-user-head { display:flex; align-items:center; gap:14px; text-align:left; padding:16px 20px; }
  .dash-sidebar .dash-avatar { margin:0; width:44px; height:44px; font-size:1.1rem; }
  .dash-sidebar .dash-nav { display:flex; flex-wrap:wrap; padding:8px; gap:2px; }
  .dash-sidebar .dash-nav-item { flex:1; min-width:70px; justify-content:center; padding:10px 6px !important; font-size:.8rem; border-left:none !important; border-bottom:2px solid transparent; border-radius:0; }
  .dash-sidebar .dash-nav-item.active { border-left:none !important; border-bottom-color:var(--primary) !important; }
  .dash-sidebar .dash-nav-divider { display:none; }
  .dash-welcome { flex-direction:column; gap:14px; text-align:center; padding:24px 20px; }
  .dash-stats { grid-template-columns:repeat(3,1fr); gap:12px; }
  .dash-stat { padding:14px; gap:12px; }
  .dash-stat-icon { width:40px; height:40px; font-size:1.1rem; }
  .dash-stat-num { font-size:1.3rem; }
  .table { min-width: 600px; }
  .dns-record-row { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stats-section .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-header { flex-direction: column; gap: 8px; }
}

@media (max-width: 480px) {
  .dash-stats { grid-template-columns:1fr; }
  .dash-sidebar .dash-nav-item { min-width:auto; font-size:.75rem !important; padding:8px 4px !important; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 16px; gap: 12px; }
  .stat-card .stat-icon { width: 44px; height: 44px; font-size: 1.2rem; }
  .stat-card .stat-value { font-size: 1.4rem; }
  .stat-card .stat-label { font-size: 0.75rem; }
  .auth-card { padding: 32px 24px; }
  .hero h1 { font-size: 1.5rem; }
  .section-header h2 { font-size: 1.4rem; }
  .domain-grid { grid-template-columns: 1fr; }
}