/* 闪验 - 全站样式 */
:root {
  --primary: #667eea;
  --primary-dark: #5a6fd6;
  --secondary: #764ba2;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #2d3748;
  --text-muted: #718096;
  --border: #e2e8f0;
  --success: #38a169;
  --danger: #e53e3e;
  --warning: #dd6b20;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(102, 126, 234, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ── 顶部导航（用户端） ── */
.navbar {
  background: var(--gradient);
  color: #fff;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 12px rgba(102, 126, 234, 0.25);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}
.navbar .brand img { height: 34px; width: 34px; }
.navbar .nav-links { display: flex; align-items: center; gap: 4px; }
.navbar .nav-links a {
  color: rgba(255, 255, 255, 0.85);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s;
}
.navbar .nav-links a:hover, .navbar .nav-links a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

/* ── 布局 ── */
.container { max-width: 1100px; margin: 0 auto; padding: 28px 20px; }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 18px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}
.card h3 { font-size: 16px; margin-bottom: 16px; color: var(--text); }

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  border-left: 4px solid var(--primary);
}
.stat-card .stat-label { font-size: 13px; color: var(--text-muted); }
.stat-card .stat-value { font-size: 26px; font-weight: 700; margin-top: 4px; }
.stat-card.green { border-left-color: var(--success); }
.stat-card.orange { border-left-color: var(--warning); }
.stat-card.purple { border-left-color: var(--secondary); }

/* ── 表单 ── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border 0.2s;
  background: #fff;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.12);
}
.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.btn {
  display: inline-block;
  padding: 10px 22px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.btn-primary { background: var(--gradient); color: #fff; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-outline { background: #fff; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 13px; }

/* ── 表格 ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 13px; white-space: nowrap; }
tr:hover td { background: #f8faff; }
.mono { font-family: "SFMono-Regular", Consolas, monospace; font-size: 13px; }
.code-block {
  background: #1a202c;
  color: #e2e8f0;
  border-radius: 8px;
  padding: 14px 16px;
  font-family: Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}
.api-method {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  font-family: Consolas, monospace;
  margin-right: 8px;
}
.api-get { background: #c6f6d5; color: #276749; }
.api-post { background: #bee3f8; color: #2a4365; }

/* ── 标签 ── */
.tag { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.tag-green { background: #c6f6d5; color: #276749; }
.tag-red { background: #fed7d7; color: #9b2c2c; }
.tag-orange { background: #feebc8; color: #9c4221; }
.tag-gray { background: #edf2f7; color: #4a5568; }

/* ── 提示 ── */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #c6f6d5; color: #276749; }
.alert-error { background: #fed7d7; color: #9b2c2c; }
.alert-info { background: #bee3f8; color: #2a4365; }

/* ── 分页 ── */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 18px; }
.pagination a, .pagination span {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text);
  background: #fff;
}
.pagination .current { background: var(--gradient); color: #fff; border-color: transparent; }

/* ── 认证页 ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  padding: 20px;
}
.auth-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}
.auth-card .auth-logo { text-align: center; margin-bottom: 24px; }
.auth-card .auth-logo img { height: 56px; }
.auth-card h2 { text-align: center; margin-bottom: 4px; }
.auth-card .auth-sub { text-align: center; color: var(--text-muted); font-size: 13px; margin-bottom: 24px; }
.auth-card .btn { width: 100%; }
.auth-links { text-align: center; margin-top: 16px; font-size: 13px; }

/* ── 管理端布局 ── */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 220px;
  background: #1a202c;
  color: #cbd5e0;
  flex-shrink: 0;
  padding: 20px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 20px;
  border-bottom: 1px solid #2d3748;
  font-weight: 700;
  color: #fff;
  font-size: 18px;
}
.admin-sidebar .brand img { height: 30px; width: 30px; }
.admin-sidebar a {
  display: block;
  padding: 11px 20px;
  color: #a0aec0;
  font-size: 14px;
  transition: all 0.15s;
}
.admin-sidebar a:hover { background: #2d3748; color: #fff; }
.admin-sidebar a.active { background: var(--gradient); color: #fff; }
.admin-sidebar .nav-section {
  padding: 16px 20px 6px;
  font-size: 11px;
  color: #718096;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.admin-main { flex: 1; padding: 28px; min-width: 0; }
.admin-topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.admin-topbar .page-title { margin: 0; }

/* ── 其他 ── */
.announcement {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 1px solid #f59e0b;
  color: #92400e;
  padding: 12px 18px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
}
.token-box { display: flex; gap: 10px; align-items: center; }
.token-box input { flex: 1; font-family: monospace; background: #f7fafc; }
.text-muted { color: var(--text-muted); }
.mt-2 { margin-top: 12px; }
.mb-0 { margin-bottom: 0; }
.flex-between { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.inline-form { display: inline; }

/* ── 弹窗 ── */
.modal-mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.modal-box {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  width: 480px;
  max-width: 92vw;
  max-height: 85vh;
  overflow-y: auto;
  overflow-x: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}
.modal-box form { margin-bottom: 12px; }
.modal-box form > div { flex-wrap: wrap; }
.modal-box input { min-width: 0; }
.modal-box .modal-actions { display: flex; gap: 8px; flex-wrap: wrap; border-top: 1px solid var(--border); padding-top: 14px; }

/* 链接样式按钮（换一张验证码等） */
.link-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
  white-space: nowrap;
}
.link-btn:hover { color: var(--primary-dark); text-decoration: underline; }

@media (max-width: 768px) {
  .navbar { flex-wrap: wrap; height: auto; padding: 10px 16px; }
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; height: auto; position: static; display: flex; flex-wrap: wrap; padding: 10px; }
  .admin-sidebar .brand { border: none; padding: 6px 12px; }
  .admin-sidebar a { padding: 8px 12px; }
  .admin-sidebar .nav-section { display: none; }
  .admin-main { padding: 16px; }
}