/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #6366f1;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* 头部样式 */
.header {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.header h1 {
    color: var(--text-primary);
    font-size: 28px;
    margin-bottom: 15px;
    text-align: center;
}

.nav-tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-tab {
    padding: 10px 24px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.nav-tab:hover {
    background: #dbeafe;
    color: var(--primary-color);
}

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

/* 主内容区 */
.main-content {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--shadow-md);
    min-height: 500px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 表单样式 */
.record-form {
    max-width: 500px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

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

/* 类型选择器 */
.type-selector {
    display: flex;
    gap: 12px;
}

.type-btn {
    flex: 1;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: 16px;
    font-weight: 500;
}

.type-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.type-btn.active {
    border-color: var(--primary-color);
    background: #eff6ff;
    color: var(--primary-color);
}

.type-btn.expense.active {
    border-color: var(--danger-color);
    background: #fef2f2;
    color: var(--danger-color);
}

.type-btn.income.active {
    border-color: var(--success-color);
    background: #ecfdf5;
    color: var(--success-color);
}

.type-icon {
    font-size: 24px;
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary:hover {
    background: #4f46e5;
}

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

.btn-info:hover {
    background: #d97706;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.form-actions .btn {
    flex: 1;
    justify-content: center;
}

/* 快速统计 */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 30px;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card.income .stat-value {
    color: var(--success-color);
}

.stat-card.expense .stat-value {
    color: var(--danger-color);
}

.stat-card.balance .stat-value {
    color: var(--info-color);
}

/* 列表样式 */
.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.list-header h2 {
    color: var(--text-primary);
    font-size: 24px;
}

.list-filters {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-select,
.filter-input {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
}

.records-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.record-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 16px;
    align-items: center;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all 0.3s;
}

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

.record-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.record-item.income .record-icon {
    background: #ecfdf5;
}

.record-item.expense .record-icon {
    background: #fef2f2;
}

.record-info {
    flex: 1;
}

.record-type {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.record-category {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.record-note {
    font-size: 13px;
    color: var(--text-secondary);
}

.record-date {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: right;
}

.record-amount {
    font-size: 20px;
    font-weight: 700;
}

.record-item.income .record-amount {
    color: var(--success-color);
}

.record-item.expense .record-amount {
    color: var(--danger-color);
}

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

.record-actions button {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

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

.btn-edit:hover {
    background: #bfdbfe;
}

.btn-delete {
    background: #fef2f2;
    color: var(--danger-color);
}

.btn-delete:hover {
    background: #fee2e2;
}

/* 统计分析样式 */
.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.analysis-header h2 {
    color: var(--text-primary);
    font-size: 24px;
}

.analysis-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.analysis-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.analysis-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.analysis-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.analysis-value.income {
    color: var(--success-color);
}

.analysis-value.expense {
    color: var(--danger-color);
}

.analysis-value.balance {
    color: var(--info-color);
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.chart-wrapper {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
}

.chart-wrapper h3 {
    color: var(--text-primary);
    font-size: 18px;
    margin-bottom: 16px;
}

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

/* 设置样式 */
.settings-container {
    max-width: 700px;
    margin: 0 auto;
}

.settings-container h2 {
    color: var(--text-primary);
    font-size: 24px;
    margin-bottom: 24px;
}

.settings-group {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
}

.settings-group:last-child {
    border-bottom: none;
}

.settings-group h3 {
    color: var(--text-primary);
    font-size: 18px;
    margin-bottom: 12px;
}

.settings-info {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 12px 16px;
    margin-bottom: 16px;
    border-radius: 4px;
}

.settings-info p {
    color: #92400e;
    font-size: 14px;
    line-height: 1.5;
}

.settings-info ul {
    margin-top: 8px;
    padding-left: 20px;
}

.settings-info li {
    color: #92400e;
    font-size: 14px;
    line-height: 1.8;
}

.settings-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.fields-display {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    margin-top: 20px;
}

.fields-display h3 {
    color: var(--text-primary);
    font-size: 18px;
    margin-bottom: 12px;
}

#fields-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.field-item {
    background: white;
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
}

.field-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.field-type {
    color: var(--text-secondary);
    font-size: 12px;
}

.connection-status {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
    display: none;
}

.connection-status.success {
    background: #ecfdf5;
    color: #065f46;
    display: block;
}

.connection-status.error {
    background: #fef2f2;
    color: #991b1b;
    display: block;
}

.connection-status.info {
    background: #eff6ff;
    color: #1e40af;
    display: block;
}

/* Toast 通知 */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

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

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

.toast.info {
    background: var(--info-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header h1 {
        font-size: 22px;
    }

    .nav-tabs {
        gap: 8px;
    }

    .nav-tab {
        padding: 8px 16px;
        font-size: 14px;
    }

    .record-item {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "icon info"
            "amount date";
        gap: 12px;
    }

    .record-icon {
        grid-area: icon;
    }

    .record-info {
        grid-area: info;
    }

    .record-amount {
        grid-area: amount;
        text-align: left;
    }

    .record-date {
        grid-area: date;
        text-align: left;
    }

    .record-actions {
        grid-column: 1 / -1;
        justify-content: flex-start;
    }

    .charts-container {
        grid-template-columns: 1fr;
    }
}

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

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.empty-state-text {
    font-size: 18px;
}