/* 组件样式系统 */

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 18px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1.4;
    vertical-align: middle;
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.32);
}

.btn-secondary {
    background: var(--color-card);
    color: var(--color-text);
    border-color: var(--color-border);
}

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

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

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

.btn-danger {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}

.btn-danger:hover {
    background: hsl(0, 78%, 48%);
    color: #fff;
}

.btn-sm {
    padding: 5px 12px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 11px 24px;
    font-size: var(--font-size-base);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ===== 卡片 ===== */
.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
}

/* ===== 资源卡片 ===== */
.resource-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.resource-card:hover {
    border-color: hsl(215, 60%, 80%);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
}

.resource-card:hover::before {
    transform: scaleX(1);
}

.resource-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
}

.resource-language {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: var(--font-weight-semibold);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    background: var(--color-primary-light);
    letter-spacing: 0.3px;
}

.resource-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.resource-card:hover .resource-title {
    color: var(--color-primary);
}

.resource-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.resource-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 2px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    background: var(--color-background);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.tag:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.resource-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border-light);
    margin-top: auto;
}

.resource-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.resource-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.resource-points {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-warning);
    background: hsl(38, 95%, 95%);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* ===== 统计卡片 ===== */
.stat-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    border-color: hsl(215, 60%, 80%);
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1.2;
    font-family: var(--font-heading);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    display: block;
    width: 100%;
    padding: 9px 14px;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.form-input:disabled {
    background: var(--color-background);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

.form-help {
    display: block;
    margin-top: 4px;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.form-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-xl) 0;
}

.form-section-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.form-actions {
    margin-top: var(--space-xl);
    display: flex;
    gap: var(--space-md);
}

/* ===== 分页 ===== */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
}

.pagination-container .pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: center;
}

/* ThinkPHP 分页样式 */
.pagination-container ul {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: center;
}

.pagination-container li a,
.pagination-container li span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination-container li a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.pagination-container li.active a,
.pagination-container li.active span {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ===== 徽章 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    line-height: 1.5;
}

.badge-primary { background: var(--color-primary-light); color: var(--color-primary); }
.badge-success { background: hsl(142, 50%, 92%); color: var(--color-success); }
.badge-warning { background: hsl(38, 95%, 93%); color: hsl(38, 85%, 40%); }
.badge-danger  { background: hsl(0, 78%, 94%); color: var(--color-danger); }
.badge-gray    { background: var(--color-background); color: var(--color-text-secondary); }

/* ===== 表格 ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.data-table thead {
    background: var(--color-background);
}

.data-table th {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.data-table td {
    padding: 12px var(--space-md);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover td {
    background: var(--color-background);
}

.table-container {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.table-container .data-table {
    border: none;
    border-radius: 0;
}

/* ===== 空状态 ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    color: var(--color-text-muted);
    grid-column: 1 / -1;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* ===== Alert 提示 ===== */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    border: 1px solid;
    margin-bottom: var(--space-md);
}

.alert-success  { background: hsl(142,50%,93%); color: hsl(142,60%,28%); border-color: hsl(142,50%,80%); }
.alert-danger   { background: hsl(0,78%,95%); color: hsl(0,78%,42%); border-color: hsl(0,78%,85%); }
.alert-warning  { background: hsl(38,95%,94%); color: hsl(38,85%,35%); border-color: hsl(38,95%,80%); }
.alert-info     { background: var(--color-primary-light); color: var(--color-primary-dark); border-color: hsl(215,60%,80%); }

/* ===== 加载占位 ===== */
.skeleton {
    background: linear-gradient(90deg, var(--color-background) 25%, hsl(215,17%,92%) 50%, var(--color-background) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== 分区标题 ===== */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    position: relative;
    padding-left: var(--space-md);
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 1.1em;
    background: var(--color-primary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-border-light);
    margin-bottom: var(--space-md);
}

.section-link {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

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

/* ===== 分隔线 ===== */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-xl) 0;
}

/* ===== 搜索框 ===== */
.search-box {
    display: flex;
    background: var(--color-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    font-size: var(--font-size-base);
    border: none;
    background: transparent;
    color: var(--color-text);
    min-width: 0;
    outline: none;
}

.search-input:focus-visible {
    outline: none;
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-btn {
    padding: 10px 24px;
    background: var(--color-primary);
    color: #fff;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
    white-space: nowrap;
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

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

/* ===== 页面标题区 ===== */
.page-header {
    padding: var(--space-xl) 0;
    margin-bottom: var(--space-lg);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.page-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* ===== 工具栏 ===== */
.resources-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-lg);
}

.resources-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.resources-count strong {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* ===== 资源网格 ===== */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

@media (max-width: 1024px) {
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .resources-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 用户下拉菜单 ===== */
.user-dropdown-wrap {
    position: relative;
}

.user-dropdown-wrap:hover .user-dropdown {
    display: block;
}

.user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    padding: var(--space-xs);
}

.user-dropdown a {
    display: block;
    padding: 8px 14px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.user-dropdown a:hover {
    background: var(--color-background);
    color: var(--color-primary);
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn {
    animation: fadeIn 0.4s ease both;
}