/* ========================================
   券商股票换股价值分析 - 样式文件
   ======================================== */

/* CSS变量定义 */
:root {
    /* 主色调 */
    --color-primary: #1a73e8;
    --color-primary-light: #4285f4;
    --color-primary-dark: #1557b0;
    
    /* 涨跌颜色（A股惯例：红涨绿跌） */
    --color-up: #e53935;
    --color-up-bg: rgba(229, 57, 53, 0.1);
    --color-down: #2e7d32;
    --color-down-bg: rgba(46, 125, 50, 0.1);
    --color-neutral: #424242;
    --color-neutral-bg: rgba(66, 66, 66, 0.05);
    
    /* 中性色 */
    --color-bg: #f5f7fa;
    --color-card: #ffffff;
    --color-border: #e0e0e0;
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========================================
   头部区域
   ======================================== */
.header {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.header__title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* 刷新按钮 */
.refresh-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.refresh-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.refresh-btn:active {
    transform: translateY(0);
}

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

.refresh-btn:disabled .refresh-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.refresh-icon {
    flex-shrink: 0;
}

/* 状态指示器 */
.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    transition: background-color var(--transition-normal);
}

.status-indicator.status--success {
    background-color: #4caf50;
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
}

.status-indicator.status--error {
    background-color: #f44336;
    box-shadow: 0 0 8px rgba(244, 67, 54, 0.5);
}

.status-indicator.status--loading {
    background-color: #ff9800;
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========================================
   核心数据展示区
   ======================================== */
.main-content {
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* 股票卡片 */
.stock-card {
    background-color: var(--color-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid var(--color-border);
}

.stock-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* 卡片头部 */
.stock-card__header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.stock-card__title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text);
}

.stock-card__code {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* 卡片主体 */
.stock-card__body {
    padding: var(--spacing-lg);
}

.stock-card__price-group {
    text-align: center;
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px dashed var(--color-border);
}

.stock-card__label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.stock-card__value {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: "DIN Alternate", "Roboto Mono", monospace;
    transition: color var(--transition-normal);
}

.stock-card__change {
    font-size: 1rem;
    font-weight: 500;
    margin-top: var(--spacing-xs);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    display: inline-block;
}

/* 涨跌颜色样式 */
.stock-card__value--price.up,
.stock-card__change.up {
    color: var(--color-up);
}

.stock-card__change.up {
    background-color: var(--color-up-bg);
}

.stock-card__value--price.down,
.stock-card__change.down {
    color: var(--color-down);
}

.stock-card__change.down {
    background-color: var(--color-down-bg);
}

.stock-card__value--price.neutral,
.stock-card__change.neutral {
    color: var(--color-neutral);
}

.stock-card__change.neutral {
    background-color: var(--color-neutral-bg);
}

/* 换股数据区域 */
.stock-card__exchange-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stock-card__exchange-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: var(--radius-sm);
}

.stock-card__exchange-item--highlight {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    border: 1px solid #ffcc80;
}

.stock-card__exchange-item--highlight .stock-card__label {
    color: #e65100;
    font-weight: 500;
}

.stock-card__value--ratio {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

.stock-card__value--cash {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: 600;
}

.stock-card__value--cash-premium {
    font-size: 1.1rem;
    color: var(--color-primary);
    font-weight: 600;
}

.stock-card__value--exchange {
    font-size: 1.1rem;
    color: var(--color-primary);
    font-weight: 600;
}

.stock-card__value--premium {
    font-size: 1.2rem;
    font-weight: 700;
}

/* 溢价正负颜色 */
.stock-card__value--premium.positive {
    color: var(--color-up);
}

.stock-card__value--premium.negative {
    color: var(--color-down);
}

/* 卡片底部 */
.stock-card__footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: center;
}

.stock-card__baseline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ========================================
   数据说明区
   ======================================== */
.info-section {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xl);
}

.info-section__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary-light);
    display: inline-block;
}

.info-section__content {
    background-color: var(--color-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.info-section__item {
    padding: var(--spacing-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    border-bottom: 1px dashed var(--color-border);
}

.info-section__item:last-child {
    border-bottom: none;
}

.info-section__item strong {
    color: var(--color-text);
}

.info-section__item--note {
    font-style: italic;
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

/* ========================================
   底部区域
   ======================================== */
.footer {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer__update-time {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.footer__update-time span {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-weight: 500;
}

.footer__source {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer__refresh-info {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

/* ========================================
   加载遮罩
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

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

.loading-spinner__circle {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

.loading-spinner__text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   错误提示
   ======================================== */
.error-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: #d32f2f;
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    max-width: 90%;
}

.error-toast.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.error-toast__message {
    font-size: 0.9rem;
}

.error-toast__retry {
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    font-size: 0.85rem;
}

.error-toast__retry:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.error-toast__close {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
    margin-left: var(--spacing-sm);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.error-toast__close:hover {
    opacity: 1;
}

/* ========================================
   响应式设计
   ======================================== */

/* 平板设备 */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stock-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        justify-self: center;
    }
    
    .header__title {
        font-size: 1.3rem;
    }
}

/* 大屏手机 */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-md);
        flex-direction: column;
        text-align: center;
    }
    
    .header__title {
        font-size: 1.2rem;
        width: 100%;
    }
    
    .header__actions {
        width: 100%;
        justify-content: center;
    }
    
    .main-content {
        padding: var(--spacing-md);
        grid-template-columns: 1fr;
    }
    
    .stock-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }
    
    .info-section {
        padding: var(--spacing-md);
    }
    
    .footer {
        padding: var(--spacing-md);
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .header__title {
        font-size: 1.1rem;
    }
    
    .refresh-btn span {
        display: none;
    }
    
    .refresh-btn {
        padding: var(--spacing-sm);
    }
    
    .stock-card__value {
        font-size: 1.5rem;
    }
    
    .stock-card__exchange-item {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
    
    .error-toast {
        flex-direction: column;
        text-align: center;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --color-text-muted: #424242;
    }
    
    .stock-card {
        border-width: 2px;
    }
}

/* 减少动画 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 打印样式 */
@media print {
    .header__actions,
    .loading-overlay,
    .error-toast {
        display: none !important;
    }
    
    .main-content {
        display: block;
    }
    
    .stock-card {
        page-break-inside: avoid;
        margin-bottom: var(--spacing-md);
    }
}