/* 现代APP风格设计系统 */
:root {
    /* APP风格配色 */
    --app-bg: #F5F7FA;              /* 浅灰背景 */
    --card-bg: #FFFFFF;             /* 纯白卡片 */
    --primary-blue: #007AFF;        /* iOS蓝 */
    --primary-blue-hover: #0056CC;  /* 深蓝 */
    --text-primary: #1D1D1F;        /* 主文本 */
    --text-secondary: #86868B;      /* 次要文本 */
    --border-color: #E5E5E7;        /* 边框色 */
    --success-green: #30D158;       /* 成功绿 */
    --warning-orange: #FF9500;      /* 警告橙 */
    --error-red: #FF3B30;           /* 错误红 */
    --tab-bg: #F2F2F7;             /* 标签背景 */

    /* 阴影 */
    --shadow-light: 0 2px 10px rgba(0,0,0,0.04);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-heavy: 0 8px 30px rgba(0,0,0,0.12);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--app-bg);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* APP导航栏 */
.app-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 88px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 0.5px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: flex-end;
    padding: 0 20px 12px;
    justify-content: space-between;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    max-width: 300px;
}

/* 面包屑导航样式 */
.breadcrumb-btn {
    padding: 6px 10px;
    border: none;
    background: var(--tab-bg);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.breadcrumb-btn:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

.breadcrumb-separator {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0 2px;
}

.breadcrumb-current {
    color: var(--text-secondary);
    font-size: 14px;
    padding: 6px 8px;
}

.navbar-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
}

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

.navbar-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--tab-bg);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
}

.navbar-btn:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

/* APP主容器 */
.app-container {
    padding-top: 88px;
    min-height: 100vh;
    padding-bottom: 100px;
}

/* 标签栏导航 */
.tab-navigation {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 88px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 0.5px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 0 20px;
    z-index: 1000;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    cursor: pointer;
    border: none;
    background: none;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    min-width: 64px;
    position: relative;
}

.tab-item:hover {
    background: var(--tab-bg);
    transform: scale(1.05);
}

.tab-item.active {
    color: var(--primary-blue);
    background: rgba(0, 122, 255, 0.1);
}

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

.tab-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: -0.2px;
}isplay: flex;
    align-items: center;
    justify-content: space-around;
    padding: 8px 20px 20px;
    z-index: 1000;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    min-width: 60px;
}

.tab-item.active {
    color: var(--primary-blue);
    background: rgba(0, 122, 255, 0.1);
}

.tab-icon {
    font-size: 24px;
    line-height: 1;
}

.tab-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: -0.2px;
}

/* 卡片容器 */
.card-container {
    padding: 20px;
    max-width: 420px;
    margin: 0 auto;
}

.app-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-light);
    border: 0.5px solid var(--border-color);
    transition: all 0.3s ease;
}

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

/* 卡片标题 */
.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}

.card-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 500;
}

/* 分段控制器 */
.segment-control {
    display: flex;
    background: var(--tab-bg);
    border-radius: var(--radius-md);
    padding: 2px;
    margin-bottom: 20px;
}

.segment-item {
    flex: 1;
    padding: 12px 16px;
    text-align: center;
    border-radius: calc(var(--radius-md) - 2px);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
    border: none;
    color: var(--text-secondary);
}

.segment-item.active {
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 按钮样式 */
.app-button {
    width: 100%;
    padding: 16px;
    border-radius: var(--radius-md);
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.app-button.primary {
    background: var(--primary-blue);
    color: white;
}

.app-button.primary:hover {
    background: var(--primary-blue-hover);
    transform: translateY(-1px);
}

.app-button.secondary {
    background: var(--tab-bg);
    color: var(--text-primary);
}

.app-button.secondary:hover {
    background: var(--border-color);
}

.app-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* 列表样式 */
.list-container {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 16px;
    box-shadow: var(--shadow-light);
}

.list-item {
    padding: 16px 20px;
    border-bottom: 0.5px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: background 0.2s ease;
}

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

.list-item:hover {
    background: var(--tab-bg);
}

.list-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--tab-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.list-content {
    flex: 1;
}

.list-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.list-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.list-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.list-change {
    font-size: 14px;
    font-weight: 600;
}

.list-change.positive {
    color: var(--success-green);
}

.list-change.negative {
    color: var(--error-red);
}

/* 状态指示器 */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.real {
    background: rgba(48, 209, 88, 0.1);
    color: var(--success-green);
}

.status-badge.mock {
    background: rgba(255, 149, 0, 0.1);
    color: var(--warning-orange);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* 输入框样式 */
.input-group {
    margin-bottom: 16px;
}

.input-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: block;
}

.app-input {
    width: 100%;
    padding: 16px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    background: var(--card-bg);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.app-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* 加载和错误状态 */
.loading-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    text-align: center;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 骨架屏加载动画 */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 改进按钮点击反馈 */
.app-button:active, .tab-item:active, .navbar-btn:active {
    transform: scale(0.95);
}

.loading-text {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
}

.error-card {
    background: rgba(255, 59, 48, 0.05);
    border: 1px solid rgba(255, 59, 48, 0.2);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    margin-bottom: 16px;
}

.error-text {
    color: var(--error-red);
    font-weight: 600;
    margin-bottom: 12px;
}

/* 弹出菜单 */
.popup-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.popup-menu.show {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.popup-menu.show .popup-content {
    transform: translateY(0);
}

.popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 0.5px solid var(--border-color);
}

.popup-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.popup-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--tab-bg);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-secondary);
}

/* 统一框架样式 */
.page-container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 24px 0 16px;
    letter-spacing: -0.3px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 500;
}

/* 统一间距系统 */
.spacing-xs { margin: 4px 0; }
.spacing-sm { margin: 8px 0; }
.spacing-md { margin: 16px 0; }
.spacing-lg { margin: 24px 0; }
.spacing-xl { margin: 32px 0; }

/* 响应式设计 */
@media (min-width: 768px) {
    .card-container {
        max-width: 800px;
        padding: 30px;
    }

    .page-container {
        max-width: 800px;
        padding: 0 40px;
    }

    .app-navbar {
        display: flex !important;
        padding: 0 40px 16px;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 88px;
        background: var(--card-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 0.5px solid var(--border-color);
        z-index: 1000;
        align-items: flex-end;
        justify-content: space-between;
    }

    .tab-navigation {
        display: none;
    }

    /* PC端顶部导航菜单 */
    .pc-nav-menu {
        display: flex !important;
        gap: 20px;
        align-items: center;
    }

    .pc-nav-item {
        color: var(--text-secondary);
        text-decoration: none;
        font-weight: 600;
        font-size: 16px;
        padding: 8px 16px;
        border-radius: var(--radius-md);
        transition: all 0.2s ease;
        border: none;
        background: none;
        cursor: pointer;
    }

    .pc-nav-item:hover {
        color: var(--primary-blue);
        background: rgba(0, 122, 255, 0.1);
    }

    .pc-nav-item.active {
        color: var(--primary-blue);
        background: rgba(0, 122, 255, 0.1);
    }

    .app-container {
        padding-top: 88px;
        padding-bottom: 40px;
    }

    .navbar-actions {
        gap: 12px;
    }

    .navbar-btn {
        width: 36px;
        height: 36px;
    }

    .navbar-title {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-primary);
        letter-spacing: -0.5px;
    }

    .section-title {
        font-size: 24px;
        margin: 32px 0 20px;
    }
}

@media (max-width: 480px) {
    .card-container {
        padding: 16px;
    }

    .app-card {
        padding: 16px;
        margin-bottom: 12px;
    }

    .list-item {
        padding: 12px 16px;
        min-height: 44px; /* 确保足够的触摸区域 */
    }

    .app-button {
        padding: 14px;
        font-size: 15px;
        min-height: 44px; /* iOS触摸标准 */
    }

    .tab-item {
        min-width: 64px;
        min-height: 48px;
    }

    .navbar-btn {
        min-width: 44px;
        min-height: 44px;
    }

    /* 改进小屏幕上的文字可读性 */
    .list-title {
        font-size: 15px;
        line-height: 1.4;
    }

    .list-subtitle {
        font-size: 13px;
        line-height: 1.3;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --app-bg: #000000;
        --card-bg: #1C1C1E;
        --text-primary: #FFFFFF;
        --text-secondary: #8E8E93;
        --border-color: #38383A;
        --tab-bg: #2C2C2E;
    }
}

/* 减少动画 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* 大宗商品菜单样式 */
.commodity-menu {
    position: fixed;
    top: 88px;
    right: 20px;
    width: 300px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-heavy);
    border: 0.5px solid var(--border-color);
    z-index: 1500;
    overflow: hidden;
}

.commodity-menu-header {
    padding: 16px 20px;
    background: var(--tab-bg);
    border-bottom: 0.5px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
}

.close-menu-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--border-color);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.close-menu-btn:hover {
    background: var(--text-secondary);
    color: var(--card-bg);
}

.commodity-menu-content {
    padding: 8px;
}

.commodity-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: background 0.2s ease;
    gap: 12px;
}

.commodity-item:hover:not(.disabled) {
    background: var(--tab-bg);
}

.commodity-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.commodity-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--tab-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.commodity-info {
    flex: 1;
}

.commodity-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

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

.commodity-arrow {
    color: var(--text-secondary);
    font-weight: 600;
}

@media (max-width: 768px) {
    .commodity-menu {
        right: 10px;
        left: 10px;
        width: auto;
        max-width: 400px;
        margin: 0 auto;
    }
}