/* 基础变量 */
:root {
    /* 浅色主题 */
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --border-color: #e6e6e8;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --accent-color: #0071e3;
    --green: #34c759;
    --red: #ff3b30;
    --green-light: rgba(52, 199, 89, 0.1);
    --red-light: rgba(255, 59, 48, 0.1);
    --blue-light: rgba(0, 113, 227, 0.1);
    
    /* 通用变量 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

/* 深色主题 */
[data-theme="dark"] {
    --bg-primary: #1c1c1e;
    --bg-secondary: #2c2c2e;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --border-color: #3a3a3c;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    --accent-color: #0a84ff;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding-bottom: 83px; /* 底部导航高度 + safe area */
    padding-top: env(safe-area-inset-top);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    transition: background-color 0.3s ease;
}

/* 加载画面 */
#app-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

#app-loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-icon {
    font-size: 48px;
    margin-bottom: 16px;
    animation: bounce 1s infinite alternate;
}

.loading-text {
    font-size: 16px;
    color: var(--text-secondary);
}

@keyframes bounce {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}

/* 主容器 */
#app-container {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

#app-container.active {
    display: block;
    opacity: 1;
}

/* 页面切换 */
.page {
    display: none;
    width: 100%;
}

.page.active {
    display: block;
}

/* 页面头部 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    padding-top: env(safe-area-inset-top) + 16px;
}

.header-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-action {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-primary);
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}

.header-action:hover {
    background-color: var(--blue-light);
}

/* 页面内容 */
.page-content {
    padding: 0 16px;
}

/* 卡片样式 */
.card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    margin-bottom: 16px;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

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

.card-body {
    padding: 16px;
}

/* 统计卡片 */
.stats-card .card-body {
    padding: 24px 16px;
    text-align: center;
}

.total-amount {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.stats-row {
    display: flex;
    justify-content: space-around;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

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

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

.stat-value {
    font-size: 18px;
    font-weight: 600;
}

.income {
    color: var(--green);
}

.expense {
    color: var(--red);
}

.balance {
    color: var(--accent-color);
}

/* 今日标题 */
.today-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 记录项 */
.record-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.record-item:last-child {
    border-bottom: none;
}

.record-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.record-left {
    display: flex;
    align-items: center;
}

.record-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-size: 16px;
}

.record-info {
    display: flex;
    flex-direction: column;
}

.record-category {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
}

.record-note {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.record-amount {
    font-size: 16px;
    font-weight: 600;
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 48px 0;
    color: var(--text-secondary);
}

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

.empty-text {
    font-size: 16px;
    margin-bottom: 24px;
}

/* 按钮样式 */
.btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    padding: 13px 24px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn:hover {
    background-color: #0077ed;
}

.btn:active {
    transform: scale(0.98);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
    border-radius: var(--radius-md);
}

/* 底部导航 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 8px env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    position: relative;
}

.nav-item.active {
    color: var(--accent-color);
}

.nav-icon {
    font-size: 20px;
    margin-bottom: 4px;
}

.nav-label {
    font-size: 12px;
}

/* 悬浮按钮 */
.fab {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -28px;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
    transition: transform 0.2s ease;
}

.fab:hover {
    transform: scale(1.05);
}

.fab:active {
    transform: scale(0.95);
}

/* 过滤标签 */
.filter-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.filter-tab {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-primary);
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-tab.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: flex-end;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translateY(0);
}

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

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

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: 16px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 24px;
}

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

.amount-input {
    display: flex;
    align-items: center;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 0 16px;
}

.currency-symbol {
    font-size: 18px;
    color: var(--text-secondary);
    margin-right: 8px;
}

#amount-input {
    flex: 1;
    background: none;
    border: none;
    font-size: 24px;
    padding: 16px 0;
    color: var(--text-primary);
    outline: none;
}

.type-selector {
    display: flex;
    gap: 8px;
}

.type-btn {
    flex: 1;
    background-color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.type-btn.active {
    background-color: var(--blue-light);
    color: var(--accent-color);
}

.type-icon {
    font-size: 24px;
    margin-bottom: 4px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.category-btn {
    background-color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 16px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-btn.active {
    background-color: var(--blue-light);
    color: var(--accent-color);
}

.category-icon {
    font-size: 20px;
    margin-bottom: 4px;
}

.category-name {
    font-size: 12px;
}

.form-input {
    width: 100%;
    background-color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 16px;
    color: var(--text-primary);
    outline: none;
}

/* 个人资料 */
.profile-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 0;
}

.avatar-container {
    position: relative;
    margin-bottom: 16px;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--blue-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.avatar-edit {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-name {
    font-size: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.edit-icon {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 设置项 */
.setting-item {
    display: flex;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-icon {
    font-size: 20px;
    margin-right: 16px;
    width: 24px;
    text-align: center;
}

.setting-text {
    flex: 1;
    font-size: 16px;
}

.setting-arrow {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 图表占位符 */
.chart-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 48px 0;
    color: var(--text-secondary);
}

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

.chart-text {
    font-size: 16px;
}

/* Toast提示 */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-xl);
    font-size: 14px;
    z-index: 1001;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background-color: rgba(52, 199, 89, 0.9);
}

.toast.error {
    background-color: rgba(255, 59, 48, 0.9);
}