/* ===== 全局重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --primary-light: #e8f0fe;
    --success: #34a853;
    --success-light: #e6f4ea;
    --danger: #ea4335;
    --danger-light: #fce8e6;
    --warning: #fbbc04;
    --warning-light: #fef7e0;
    --gray-50: #f8f9fa;
    --gray-100: #f1f3f4;
    --gray-200: #e8eaed;
    --gray-300: #dadce0;
    --gray-400: #bdc1c6;
    --gray-500: #9aa0a6;
    --gray-600: #80868b;
    --gray-700: #5f6368;
    --gray-800: #3c4043;
    --gray-900: #202124;
    --sidebar-width: 240px;
    --topbar-height: 60px;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 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);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.08), 0 3px 6px rgba(0,0,0,0.06);
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    font-size: 14px;
    line-height: 1.6;
    overflow: hidden;
}

#app {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* ===== 侧边栏 ===== */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #1a237e 0%, #0d47a1 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
    font-size: 32px;
    line-height: 1;
}

.brand h1 {
    font-size: 16px;
    font-weight: 700;
    margin: 0;
}

.brand p {
    font-size: 11px;
    opacity: 0.6;
    margin: 0;
}

.nav-menu {
    flex: 1;
    padding: 12px 8px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 4px;
    font-size: 14px;
    font-weight: 500;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.nav-item.active {
    background: rgba(255,255,255,0.15);
    color: #fff;
    font-weight: 600;
}

.nav-icon {
    font-size: 20px;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 11px;
    opacity: 0.6;
}

.sidebar-footer p {
    margin: 2px 0;
}

.sidebar-footer .version {
    margin-top: 4px;
    opacity: 0.5;
}

/* 侧边栏用户信息 */
.sidebar-user {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    margin-bottom: 10px;
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
}
.sidebar-user .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-user .user-avatar {
    font-size: 20px;
}
.sidebar-user .user-name {
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
}
.sidebar-user .user-role {
    margin: 1px 0 0;
    font-size: 11px;
    opacity: 0.6;
}
.sidebar-user .btn-logout {
    background: rgba(255,255,255,0.12);
    border: none;
    color: rgba(255,255,255,0.8);
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.2s;
}
.sidebar-user .btn-logout:hover {
    background: rgba(244,67,54,0.4);
    color: #fff;
}

/* ===== 主内容区 ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.topbar {
    height: var(--topbar-height);
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    flex-shrink: 0;
}

.topbar h2 {
    font-size: 18px;
    font-weight: 600;
    flex: 1;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-700);
    padding: 4px 8px;
}

.topbar-actions {
    display: flex;
    gap: 8px;
}

.page-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.97);
}

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

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

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

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

.btn-warning {
    background: var(--warning);
    color: var(--gray-900);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

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

.btn-block {
    width: 100%;
}

.btn-icon {
    padding: 6px 10px;
    font-size: 16px;
}

/* ===== 卡片 ===== */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 16px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

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

/* ===== 统计卡片 ===== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

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

.stat-card .stat-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.stat-card .stat-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-card .stat-change {
    font-size: 12px;
    margin-top: 4px;
}

.stat-change.up {
    color: var(--success);
}

.stat-change.down {
    color: var(--danger);
}

.stat-card.revenue {
    border-top: 3px solid var(--success);
}

.stat-card.expense {
    border-top: 3px solid var(--danger);
}

.stat-card.profit {
    border-top: 3px solid var(--primary);
}

.stat-card.salary {
    border-top: 3px solid var(--warning);
}

/* ===== 表格 ===== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    background: var(--gray-50);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
}

td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-800);
}

tr:hover {
    background: var(--gray-50);
}

tr:last-child td {
    border-bottom: none;
}

.text-right {
    text-align: right;
}

.text-center {
    text-align: center;
}

.text-success {
    color: var(--success);
    font-weight: 600;
}

.text-danger {
    color: var(--danger);
    font-weight: 600;
}

.text-primary {
    color: var(--primary);
    font-weight: 600;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-label .required {
    color: var(--danger);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-900);
    background: #fff;
    transition: var(--transition);
    font-family: inherit;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26,115,232,0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
}

/* ===== 模态框 ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalIn 0.2s ease;
}

.modal.large {
    max-width: 800px;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
}

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

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--gray-500);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: #fff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 250px;
    animation: toastIn 0.3s ease;
    border-left: 4px solid var(--primary);
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--danger);
}

.toast.warning {
    border-left-color: var(--warning);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== 筛选栏 ===== */
.filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-bar .form-input,
.filter-bar .form-select {
    width: auto;
    min-width: 140px;
}

.filter-bar .form-group {
    margin-bottom: 0;
}

/* ===== 标签 ===== */
.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

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

.tag-green {
    background: var(--success-light);
    color: var(--success);
}

.tag-red {
    background: var(--danger-light);
    color: var(--danger);
}

.tag-yellow {
    background: var(--warning-light);
    color: #b06000;
}

.tag-gray {
    background: var(--gray-100);
    color: var(--gray-700);
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-500);
}

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

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

/* ===== 快速记账菜单 ===== */
.fab-menu {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: none;
    flex-direction: column-reverse;
    gap: 8px;
    z-index: 999;
}

.fab-menu.show {
    display: flex;
}

.fab-item {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 24px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    white-space: nowrap;
}

.fab-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(-4px);
}

/* ===== 图表容器 ===== */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

.chart-container canvas {
    max-height: 300px;
}

/* ===== 薪资明细表 ===== */
.salary-detail-table {
    width: 100%;
    font-size: 12px;
}

.salary-detail-table th {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 11px;
    padding: 8px;
}

.salary-detail-table td {
    padding: 8px;
    font-size: 12px;
}

.salary-detail-table .total-row {
    background: var(--gray-50);
    font-weight: 700;
}

/* ===== 分析页面 ===== */
.analysis-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    background: var(--gray-100);
    padding: 4px;
    border-radius: var(--radius-sm);
    width: fit-content;
}

.analysis-tab {
    padding: 8px 24px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
}

.analysis-tab.active {
    background: #fff;
    color: var(--primary);
    box-shadow: var(--shadow);
}

.analysis-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.analysis-grid .card {
    margin-bottom: 0;
}

.analysis-table {
    width: 100%;
    font-size: 13px;
}

.analysis-table th {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.analysis-table .text-right {
    text-align: right;
}

.summary-row {
    background: var(--gray-50);
    font-weight: 700;
}

/* ===== 设置页面 ===== */
.settings-section {
    margin-bottom: 24px;
}

.settings-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    color: var(--primary);
}

.data-management-btn {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== 响应式 ===== */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .overlay.show {
        display: block;
    }

    .menu-toggle {
        display: block;
    }

    .page-container {
        padding: 16px;
    }

    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
    }

    .analysis-grid {
        grid-template-columns: 1fr;
    }

    .stat-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .stat-card .stat-value {
        font-size: 20px;
    }

    .topbar {
        padding: 0 16px;
    }

    .topbar h2 {
        font-size: 16px;
    }

    .modal {
        max-width: 100%;
        max-height: 95vh;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-bar .form-input,
    .filter-bar .form-select {
        width: 100%;
    }

    th, td {
        padding: 8px 10px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .stat-grid {
        grid-template-columns: 1fr;
    }

    .topbar-actions {
        display: none;
    }

    .fab-menu {
        display: flex;
    }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* ===== 打印样式 ===== */
@media print {
    .sidebar, .topbar, .fab-menu, .filter-bar, .btn {
        display: none !important;
    }
    .page-container {
        padding: 0;
        overflow: visible;
    }
    .main-content {
        overflow: visible;
    }
}