/**
 * 教务系统组件样式
 * Component Styles for Education Management System
 */

/* ===== 按钮组件 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(162, 31, 36, 0.1);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* 按钮尺寸 */
.btn-sm {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-6);
  font-size: var(--font-size-base);
}

/* 按钮变体 */
.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-outline-primary {
  background-color: transparent;
  border: 1px solid var(--color-primary) !important;
  color: var(--color-primary);
}

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

.btn-outline-success {
  background-color: transparent;
  border: 1px solid var(--color-success) !important;
  color: var(--color-success);
}

.btn-outline-success:hover {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: var(--color-white);
}

.btn-outline-info {
  background-color: transparent;
  border: 1px solid var(--color-info) !important;
  color: var(--color-info);
}

.btn-outline-info:hover {
  background-color: var(--color-info);
  border-color: var(--color-info);
  color: var(--color-white);
}

.btn-outline-warning {
  background-color: transparent;
  border: 1px solid var(--color-warning) !important;
  color: var(--color-warning);
}

.btn-outline-warning:hover {
  background-color: var(--color-warning);
  border-color: var(--color-warning);
  color: var(--color-gray-800);
}

/* 系统概览卡片样式 */
.stats-overview-row {
  display: flex !important;
  flex-wrap: wrap !important;
}

.stats-overview-row > [class*="col-"] {
  display: flex !important;
  flex-direction: column !important;
}

.stats-card {
  transition: var(--transition-base);
  border: 1px solid var(--color-gray-200) !important;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

.stats-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md) !important;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-100) 100%);
}

/* 为不同类型的统计卡片添加特色底色 */
.stats-overview-row > .col-lg-6:nth-child(1) .stats-card {
  background: linear-gradient(135deg, rgba(162, 31, 36, 0.03) 0%, rgba(162, 31, 36, 0.08) 100%);
  border-color: rgba(162, 31, 36, 0.2) !important;
}

.stats-overview-row > .col-lg-6:nth-child(1) .stats-card:hover {
  background: linear-gradient(135deg, rgba(162, 31, 36, 0.05) 0%, rgba(162, 31, 36, 0.12) 100%);
}

.stats-overview-row > .col-lg-6:nth-child(2) .stats-card {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.03) 0%, rgba(40, 167, 69, 0.08) 100%);
  border-color: rgba(40, 167, 69, 0.2) !important;
}

.stats-overview-row > .col-lg-6:nth-child(2) .stats-card:hover {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.05) 0%, rgba(40, 167, 69, 0.12) 100%);
}

.stats-overview-row > .col-lg-6:nth-child(3) .stats-card {
  background: linear-gradient(135deg, rgba(23, 162, 184, 0.03) 0%, rgba(23, 162, 184, 0.08) 100%);
  border-color: rgba(23, 162, 184, 0.2) !important;
}

.stats-overview-row > .col-lg-6:nth-child(3) .stats-card:hover {
  background: linear-gradient(135deg, rgba(23, 162, 184, 0.05) 0%, rgba(23, 162, 184, 0.12) 100%);
}

.stats-overview-row > .col-lg-6:nth-child(4) .stats-card {
  background: linear-gradient(135deg, rgba(255, 193, 7, 0.03) 0%, rgba(255, 193, 7, 0.08) 100%);
  border-color: rgba(255, 193, 7, 0.3) !important;
}

.stats-overview-row > .col-lg-6:nth-child(4) .stats-card:hover {
  background: linear-gradient(135deg, rgba(255, 193, 7, 0.05) 0%, rgba(255, 193, 7, 0.12) 100%);
}

/* 确保系统概览每行显示2个 */
@media (min-width: 768px) {
  .stats-overview-row > .col-lg-6 {
    flex: 0 0 50% !important;
    max-width: 50% !important;
  }
}

.btn-ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary-dark);
}

/* ===== 表单组件 ===== */
.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(162, 31, 36, 0.1);
}

.form-control::placeholder {
  color: var(--color-gray-400);
}

.form-select {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-8) var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--spacing-3) center;
  background-size: 16px 12px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  appearance: none;
}

.form-select:focus {
  border-color: var(--color-primary);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(162, 31, 36, 0.1);
}

.form-label {
  display: inline-block;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-group {
  margin-bottom: var(--spacing-4);
}

/* ===== 卡片组件 ===== */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  word-wrap: break-word;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: var(--spacing-4) var(--spacing-5);
  margin-bottom: 0;
  background-color: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.card-body {
  flex: 1 1 auto;
  padding: var(--spacing-5);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-5);
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.card-title {
  margin-bottom: var(--spacing-3);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

/* ===== 表格组件 ===== */
.table {
  width: 100%;
  margin-bottom: 0;
  color: var(--color-gray-800);
  vertical-align: top;
  border-color: var(--color-gray-200);
  background-color: var(--color-white);
}

.table > :not(caption) > * > * {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom-width: 1px;
  box-shadow: inset 0 0 0 9999px var(--bs-table-accent-bg);
}

.table > tbody {
  vertical-align: inherit;
}

.table > thead {
  vertical-align: bottom;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  --bs-table-accent-bg: var(--color-gray-50);
}

.table-hover > tbody > tr:hover > * {
  --bs-table-accent-bg: rgba(162, 31, 36, 0.05);
  transition: var(--transition-fast);
}

.table thead th {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
  font-weight: var(--font-weight-semibold);
  border-bottom: 2px solid var(--color-gray-200);
  font-size: var(--font-size-sm);
}

.table-light thead th {
  background-color: var(--color-gray-50);
  color: var(--color-gray-600);
}

/* 表格响应式容器 */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* 大数据表格优化 */
.table-fixed {
  table-layout: fixed;
}

.table-fixed th,
.table-fixed td {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 表格内链接样式 */
.table a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.table a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* 功能卡片样式 */
.function-card {
  transition: var(--transition-base);
  border: 1px solid var(--color-gray-200) !important;
}

.function-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg) !important;
}

.function-card .card-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
}

.function-card .btn {
  margin-top: auto;
}

/* 功能卡片行布局 */
.function-cards-row {
  display: flex !important;
  flex-wrap: wrap !important;
}

.function-cards-row > [class*="col-"] {
  display: flex !important;
  flex-direction: column !important;
}

/* 确保在大屏幕上一行显示4个 */
@media (min-width: 992px) {
  .function-cards-row > .col-lg-3 {
    flex: 0 0 25% !important;
    max-width: 25% !important;
  }
}

/* 确保功能卡片按钮边框显示 */
.function-card .btn-outline-primary,
.function-card .btn-outline-success,
.function-card .btn-outline-info,
.function-card .btn-outline-warning {
  border: 1px solid currentColor !important;
  font-weight: var(--font-weight-medium);
}

.function-card .btn-outline-primary:hover,
.function-card .btn-outline-success:hover,
.function-card .btn-outline-info:hover,
.function-card .btn-outline-warning:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* ===== 提示组件 ===== */
.alert {
  position: relative;
  padding: var(--spacing-4) var(--spacing-5);
  margin-bottom: var(--spacing-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.alert-success {
  color: #0f5132;
  background-color: #d1e7dd;
  border-color: #badbcc;
}

.alert-danger {
  color: #842029;
  background-color: #f8d7da;
  border-color: #f5c2c7;
}

.alert-warning {
  color: #664d03;
  background-color: #fff3cd;
  border-color: #ffecb5;
}

.alert-info {
  color: #055160;
  background-color: #cff4fc;
  border-color: #b6effb;
}

/* ===== 加载组件 ===== */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  vertical-align: -0.125em;
  border: 0.125em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
  to {
    transform: rotate(360deg);
  }
}

.spinner-lg {
  width: 2rem;
  height: 2rem;
  border-width: 0.25em;
}

/* ===== 徽章组件 ===== */
.badge {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  color: var(--color-white);
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: var(--radius-base);
}

.badge-primary {
  background-color: var(--color-primary);
}

.badge-success {
  background-color: var(--color-success);
}

.badge-warning {
  background-color: var(--color-warning);
  color: var(--color-gray-800);
}

.badge-danger {
  background-color: var(--color-danger);
}

/* ===== 导航组件 ===== */
.nav {
  display: flex;
  flex-wrap: wrap;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}

.nav-link {
  display: block;
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-gray-600);
  text-decoration: none;
  transition: var(--transition-fast);
  border-radius: var(--radius-md);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary);
  background-color: var(--color-primary-50);
}

.nav-link.active {
  color: var(--color-white);
  background-color: var(--color-primary);
}

/* ===== 面包屑组件 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  padding: var(--spacing-3) 0;
  margin-bottom: var(--spacing-4);
  list-style: none;
  background-color: transparent;
}

.breadcrumb-item + .breadcrumb-item::before {
  float: left;
  padding-right: var(--spacing-2);
  color: var(--color-gray-400);
  content: "/";
}

.breadcrumb-item.active {
  color: var(--color-gray-600);
}

/* ===== 分页组件 ===== */
.pagination {
  display: flex;
  padding-left: 0;
  list-style: none;
  border-radius: var(--radius-md);
}

.page-link {
  position: relative;
  display: block;
  padding: var(--spacing-2) var(--spacing-3);
  margin-left: -1px;
  line-height: 1.25;
  color: var(--color-primary);
  text-decoration: none;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  transition: var(--transition-fast);
}

.page-link:hover {
  z-index: 2;
  color: var(--color-primary-dark);
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-300);
}

.page-item.active .page-link {
  z-index: 3;
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.page-item:first-child .page-link {
  margin-left: 0;
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.page-item:last-child .page-link {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}