/* ============================================================
 * 语燕 YuYan 管理后台样式
 * 现代简约风格，Indigo配色，大量留白
 * ============================================================ */

/* CSS变量 */
:root {
    --primary: #4F46E5;
    --primary-light: #818CF8;
    --primary-bg: #EEF2FF;
    --cta: #22C55E;
    --text: #312E81;
    --text-light: #6B7280;
    --bg: #F8FAFC;
    --white: #FFFFFF;
    --border: #E2E8F0;
    --danger: #EF4444;
    --warning: #F59E0B;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --radius: 12px;
    --radius-sm: 8px;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* 登录页 */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-bg) 0%, #E0E7FF 100%);
    padding: 20px;
}

.login-card {
    background: var(--white);
    border-radius: 20px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-md);
}

.login-card .logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-card .logo h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.login-card .logo p {
    color: var(--text-light);
    font-size: 14px;
    margin-top: 4px;
}

/* 表单 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text);
    background: var(--white);
    transition: all 0.2s ease;
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: #4338CA;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: var(--cta);
    color: var(--white);
}

.btn-success:hover {
    background: #16A34A;
}

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

.btn-danger:hover {
    background: #DC2626;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text);
}

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

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

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

/* 布局 */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 240px;
    background: var(--white);
    border-right: 1px solid var(--border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar .logo-area {
    padding: 0 8px 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

.sidebar .logo-area h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.sidebar .nav-list {
    list-style: none;
    flex: 1;
}

.sidebar .nav-item {
    margin-bottom: 4px;
}

.sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.sidebar .nav-link:hover {
    background: var(--primary-bg);
    color: var(--primary);
}

.sidebar .nav-link.active {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
}

.sidebar .nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 32px 40px;
    min-height: 100vh;
}

/* 顶部栏 */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.top-bar h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
}

.top-bar .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--text-light);
}

.top-bar .logout-btn {
    color: var(--danger);
    cursor: pointer;
    font-size: 14px;
    border: none;
    background: none;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.stat-card .stat-sub {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

/* 卡片/面板 */
.card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

/* 工具栏 */
.toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.toolbar .search-input {
    width: 260px;
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    outline: none;
}

.toolbar .search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.toolbar select {
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--white);
    outline: none;
    cursor: pointer;
}

/* 表格 */
.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th,
table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

table th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-light);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table tbody tr:hover {
    background: var(--primary-bg);
}

table td .actions {
    display: flex;
    gap: 8px;
}

/* 标签 */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
}

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

.badge-success {
    background: #DCFCE7;
    color: #15803D;
}

.badge-danger {
    background: #FEE2E2;
    color: #991B1B;
}

.badge-warning {
    background: #FEF3C7;
    color: #92400E;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 15px;
}

/* 分页 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination button {
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--white);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination button.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.pagination .page-info {
    font-size: 13px;
    color: var(--text-light);
    padding: 0 8px;
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
}

.modal-header {
    padding: 24px 28px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    font-size: 20px;
    color: var(--text-light);
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg);
    color: var(--text);
}

.modal-body {
    padding: 24px 28px;
}

.modal-footer {
    padding: 0 28px 24px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Toast消息 */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 2000;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    font-size: 14px;
    animation: slideIn 0.3s ease;
}

.toast-success {
    background: #DCFCE7;
    color: #15803D;
    border: 1px solid #BBF7D0;
}

.toast-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 响应式 */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
        padding: 16px 8px;
    }

    .sidebar .logo-area h2,
    .sidebar .nav-link span {
        display: none;
    }

    .main-content {
        margin-left: 60px;
        padding: 20px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}