/* ============================
   扁平化商业风格 - 定时任务管理平台
   ============================ */

:root {
  --c-bg:         #f5f6fa;
  --c-surface:    #ffffff;
  --c-border:     #e2e5ed;
  --c-text:       #1a1d28;
  --c-text-2:     #5a5f6e;
  --c-text-3:     #9298a6;
  --c-brand:      #4f6ef7;
  --c-brand-h:    #3b57e0;
  --c-brand-s:    #edf0ff;
  --c-green:      #22c55e;
  --c-green-s:    #ecfdf5;
  --c-red:        #ef4444;
  --c-red-s:      #fef2f2;
  --c-amber:      #f59e0b;
  --c-amber-s:    #fffbeb;
  --c-sky:        #0ea5e9;
  --c-sky-s:      #f0f9ff;
  --radius:       8px;
  --radius-sm:    6px;
  --shadow-xs:    0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:    0 1px 3px rgba(0,0,0,.06);
  --shadow-md:    0 4px 12px rgba(0,0,0,.06);
  --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
}

a { color: var(--c-brand); text-decoration: none; }
a:hover { color: var(--c-brand-h); }

/* ---- 导航栏 ---- */
.navbar {
  background: var(--c-surface) !important;
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-xs);
  padding: 0 0;
  height: 56px;
}

.navbar-brand {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text) !important;
  letter-spacing: -.3px;
}
.navbar-brand i { color: var(--c-brand); }

.navbar-dark .navbar-nav .nav-link {
  color: var(--c-text-2) !important;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  margin: 0 2px;
  transition: all .15s;
}
.navbar-dark .navbar-nav .nav-link:hover {
  color: var(--c-brand) !important;
  background: var(--c-brand-s);
}
.navbar-dark .navbar-nav .nav-link.active {
  color: var(--c-brand) !important;
  background: var(--c-brand-s);
  font-weight: 600;
}

.navbar-dark .navbar-toggler { border-color: var(--c-border); }
.navbar-dark .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%235a5f6e' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ---- 卡片 ---- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xs);
  transition: box-shadow .2s;
}
.card:hover { box-shadow: var(--shadow-sm); }

.card-header {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 16px 20px;
  font-weight: 600;
  font-size: 14px;
  color: var(--c-text);
}
.card-body { padding: 20px; }

/* ---- 统计卡片 ---- */
.stat-card {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
  box-shadow: var(--shadow-xs);
}
.stat-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  transition: all .2s;
}
.stat-card .stat-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}
.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.5px;
}
.stat-card .stat-label {
  font-size: 12px;
  color: var(--c-text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ---- 表格 ---- */
.table { margin: 0; }
.table th {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-text-3);
  text-transform: uppercase;
  letter-spacing: .4px;
  background: #fafbfc;
  border-top: none;
  border-bottom: 1px solid var(--c-border);
  padding: 12px 16px;
}
.table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f1f3f6;
  vertical-align: middle;
  font-size: 13px;
}
.table tbody tr:hover { background: #fafbfc; }
.table tbody tr:last-child td { border-bottom: none; }

/* ---- 按钮 ---- */
.btn {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all .15s;
  letter-spacing: .1px;
}

.btn-primary {
  background: var(--c-brand);
  border: 1px solid var(--c-brand);
  box-shadow: none;
}
.btn-primary:hover {
  background: var(--c-brand-h);
  border-color: var(--c-brand-h);
}

.btn-success {
  background: var(--c-green);
  border-color: var(--c-green);
}
.btn-danger {
  background: var(--c-red);
  border-color: var(--c-red);
}
.btn-warning {
  background: var(--c-amber);
  border-color: var(--c-amber);
}

.btn-outline-primary {
  color: var(--c-brand);
  border-color: var(--c-border);
}
.btn-outline-primary:hover {
  background: var(--c-brand-s);
  color: var(--c-brand);
  border-color: var(--c-brand);
}

.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 10px 24px; font-size: 14px; }

/* ---- 表单 ---- */
.form-control, .form-select {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  padding: 8px 12px;
  color: var(--c-text);
  background: var(--c-surface);
  box-shadow: none;
  transition: border-color .15s, box-shadow .15s;
}
.form-control:focus, .form-select:focus {
  border-color: var(--c-brand);
  box-shadow: 0 0 0 3px rgba(79,110,247,.1);
  outline: none;
}
.form-control::placeholder { color: var(--c-text-3); }
.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text-2);
  margin-bottom: 6px;
}

.input-group-text {
  background: #fafbfc;
  border: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-text-3);
}

/* ---- 徽章 ---- */
.badge {
  font-weight: 500;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: .2px;
}

/* ---- 提示框 ---- */
.alert {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: 13px;
  padding: 12px 16px;
  box-shadow: none;
}

.alert-danger {
  background: var(--c-red-s);
  border-color: #fecaca;
  color: #991b1b;
}
.alert-success {
  background: var(--c-green-s);
  border-color: #bbf7d0;
  color: #166534;
}
.alert-info {
  background: var(--c-sky-s);
  border-color: #bae6fd;
  color: #075985;
}
.alert-warning {
  background: var(--c-amber-s);
  border-color: #fde68a;
  color: #92400e;
}

/* ---- 分页 ---- */
.pagination { gap: 3px; }
.page-link {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm) !important;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--c-text-2);
  background: var(--c-surface);
}
.page-link:hover {
  background: var(--c-brand-s);
  color: var(--c-brand);
  border-color: var(--c-brand);
}
.page-item.active .page-link {
  background: var(--c-brand);
  border-color: var(--c-brand);
  color: #fff;
}
.page-item.disabled .page-link {
  background: #fafbfc;
  color: var(--c-text-3);
}

/* ---- 下拉菜单 ---- */
.dropdown-menu {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 4px;
  margin-top: 8px;
}
.dropdown-item {
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-size: 13px;
  color: var(--c-text-2);
}
.dropdown-item:hover {
  background: var(--c-brand-s);
  color: var(--c-brand);
}

/* ---- 模态框 ---- */
.modal-content {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.modal-header {
  border-bottom: 1px solid var(--c-border);
  padding: 16px 20px;
}
.modal-footer {
  border-top: 1px solid var(--c-border);
  padding: 12px 20px;
}

/* ---- 页脚 ---- */
footer {
  background: var(--c-surface) !important;
  border-top: 1px solid var(--c-border);
  color: var(--c-text-3) !important;
  padding: 16px 0 !important;
  font-size: 12px;
}

/* ---- 认证页面 ---- */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.auth-card .auth-header {
  padding: 32px 32px 0;
  text-align: center;
}
.auth-card .auth-header .logo-icon {
  width: 48px;
  height: 48px;
  background: var(--c-brand);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.auth-card .auth-header .logo-icon i {
  font-size: 22px;
  color: #fff;
}
.auth-card .auth-header h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.3px;
  margin-bottom: 4px;
}
.auth-card .auth-header p {
  font-size: 13px;
  color: var(--c-text-3);
}

.auth-card .auth-body {
  padding: 24px 32px 32px;
}

.auth-card .auth-body .form-control {
  height: 42px;
  font-size: 14px;
}

.auth-card .auth-body .btn {
  height: 44px;
  font-size: 14px;
  font-weight: 600;
}

.auth-card .auth-footer {
  background: #fafbfc;
  border-top: 1px solid var(--c-border);
  padding: 16px 32px;
  text-align: center;
  font-size: 13px;
  color: var(--c-text-2);
}

/* ---- 页面头部 ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-header h4 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.3px;
  margin: 0;
}
.page-header .breadcrumb-text {
  font-size: 12px;
  color: var(--c-text-3);
}

/* ---- 表单分区 ---- */
.form-section {
  margin-bottom: 28px;
}
.form-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text-2);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.form-section-title::before {
  content: '';
  width: 3px;
  height: 16px;
  background: var(--c-brand);
  border-radius: 2px;
}

/* ---- 空状态 ---- */
.empty-state {
  text-align: center;
  padding: 48px 24px;
}
.empty-state .empty-icon {
  font-size: 48px;
  color: #dde1ea;
  margin-bottom: 16px;
}
.empty-state p {
  color: var(--c-text-3);
  font-size: 14px;
  margin-bottom: 20px;
}

/* ---- 动画 ---- */
.fade-in {
  animation: fadeIn .3s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .card-body { padding: 16px; }
  .auth-card .auth-body { padding: 20px 24px; }
  .auth-card .auth-header { padding: 24px 24px 0; }
  .auth-card .auth-footer { padding: 12px 24px; }
  .stat-card .stat-value { font-size: 24px; }
}

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }