/* =============================================================
   通讯录管理系统 - 全局样式
   ============================================================= */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --success-dark: #15803d;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 8px;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}
.container-narrow { max-width: 560px; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand { font-size: 18px; font-weight: 700; color: var(--primary); }
.user-actions { display: flex; align-items: center; gap: 12px; }
.username { color: var(--text-light); font-size: 14px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
  background: #e2e8f0;
  color: var(--text);
  transition: background .15s, opacity .15s;
}
.btn:hover { text-decoration: none; opacity: .92; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: var(--success-dark); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-block { width: 100%; margin-top: 8px; }
.btn-sm { padding: 5px 10px; font-size: 13px; }

/* ---------- 提示消息 ---------- */
.flash {
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 14px;
}
.flash-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* ---------- 登录/注册页 ---------- */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
}
.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, .06);
}
.auth-card h1 { font-size: 22px; text-align: center; color: var(--primary); }
.auth-sub { text-align: center; color: var(--text-light); font-size: 13px; margin: 8px 0 20px; }
.auth-link { text-align: center; margin-top: 16px; font-size: 14px; color: var(--text-light); }

/* ---------- 表单 ---------- */
.card.form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.form-item { margin-bottom: 16px; }
.form-item label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}
.form-item input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.form-item input:focus { border-color: var(--primary); }
.required { color: var(--danger); }
.tip { color: var(--text-light); font-weight: 400; font-size: 12px; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; }

/* ---------- 主界面工具栏 ---------- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.search-form { display: flex; gap: 8px; flex: 1; min-width: 260px; }
.toolbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.search-input {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
}
.search-input:focus { border-color: var(--primary); }
.list-info { font-size: 13px; color: var(--text-light); margin-bottom: 10px; }

/* ---------- 数据表格 ---------- */
.table-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-x: auto;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table th { background: #f8fafc; color: var(--text-light); font-weight: 600; }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: #f8fafc; }
.td-name { font-weight: 600; }
.td-remark { max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
.th-ops, .td-ops { width: 140px; }
.td-ops { display: flex; gap: 8px; align-items: center; }
.inline-form { display: inline; }
.muted { color: var(--text-light); }

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}
.page-info { font-size: 14px; color: var(--text-light); }

/* ---------- 空状态 ---------- */
.empty-tip {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 48px 16px;
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
}

/* ---------- 导入页 ---------- */
.import-errors { margin: 0 0 16px 20px; font-size: 13px; color: var(--text); line-height: 1.8; }
.form-divider { border: none; border-top: 1px solid var(--border); margin: 24px 0; }
.card.form h3 { font-size: 15px; margin-bottom: 6px; }

/* ---------- 其他 ---------- */
.page-head { margin-bottom: 16px; }
.page-head h2 { margin-top: 8px; font-size: 20px; }
.site-footer {
  margin-top: 32px;
  text-align: center;
  color: var(--text-light);
  font-size: 12px;
  line-height: 1.6;
}

@media (max-width: 560px) {
  .toolbar { flex-direction: column; align-items: stretch; }
}

/* ---------- 二维码缩略图 ---------- */
.qr-thumb {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 6px;
  display: block;
}
.qr-group { display: flex; gap: 10px; flex-wrap: wrap; }
.qr-item { display: inline-flex; flex-direction: column; align-items: center; gap: 2px; }
.qr-item em { font-style: normal; font-size: 11px; color: var(--text-light); }

/* ---------- 后台管理 ---------- */
.stats-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.stat-box {
  flex: 1;
  min-width: 120px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
}
.stat-box strong { display: block; font-size: 22px; color: var(--primary); margin-top: 4px; }
.badge-admin {
  display: inline-block;
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
}
.checkbox-row { display: flex; align-items: center; gap: 8px; font-weight: 400; cursor: pointer; }
code {
  background: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 12px;
}