:root {
    --primary-color: #f7931a;
    --secondary-color: #4a90e2;
    --accent-color: #00d4ff;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    
    --bg-dark: #0a0e27;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --spacing: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0f1629 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
.header {
    text-align: center;
    padding: 60px 20px;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(247, 147, 26, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

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

.header-content {
    position: relative;
    z-index: 1;
}

.title {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.title-icon {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

/* 主要内容区域 */
.main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
}

/* 卡片样式 */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
}

.icon {
    font-size: 1.8rem;
}

/* 设置区域 */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.setting-group input[type="number"],
.setting-group input[type="date"] {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.setting-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

.setting-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(247, 147, 26, 0.4);
}

.setting-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(247, 147, 26, 0.4);
}

.range-value {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(247, 147, 26, 0.2);
    border-radius: var(--border-radius-sm);
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

/* 策略选项 */
.strategies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.strategy-option {
    position: relative;
}

.strategy-option input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.strategy-option label {
    display: block;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.strategy-option input:checked + label {
    background: rgba(247, 147, 26, 0.1);
    border-color: var(--primary-color);
}

.strategy-option label:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.strategy-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.strategy-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 自定义设置 */
.custom-settings {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 24px;
    align-items: end;
}

.btn-analyze {
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-analyze:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74, 144, 226, 0.4);
}

/* 操作按钮 */
.action-section {
    text-align: center;
    margin: 20px 0;
}

.btn-primary {
    padding: 18px 48px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 8px 24px rgba(247, 147, 26, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(247, 147, 26, 0.6);
}

.btn-icon {
    font-size: 1.4rem;
}

/* 加载动画 */
.loading-indicator {
    text-align: center;
    padding: 40px;
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 16px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 结果展示 - 横排布局 */
.results-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.result-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    overflow: hidden;
}

.result-card:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.result-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
}

.result-card-header:hover {
    background: rgba(255, 255, 255, 0.02);
}

.result-strategy-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.result-strategy-name {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.expand-icon {
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.result-card.expanded .expand-icon {
    transform: rotate(180deg);
}

.result-card-summary {
    display: flex;
    align-items: center;
    gap: 20px;
}

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

.summary-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.summary-value {
    font-size: 1rem;
    font-weight: 600;
}

.summary-value.positive {
    color: var(--success-color);
}

.summary-value.negative {
    color: var(--danger-color);
}

.result-card-content {
    display: none;
    padding: 0 24px 24px;
    animation: slideDown 0.3s ease-out;
}

.result-card.expanded .result-card-content {
    display: block;
}

.result-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.result-metric {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: center;
    padding: 12px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-sm);
}

.result-metric-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.result-metric-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.result-metric-value.positive {
    color: var(--success-color);
}

.result-metric-value.negative {
    color: var(--danger-color);
}

/* 图表容器 */
.chart-container {
    position: relative;
    height: 400px;
    margin-top: 20px;
}

.chart-legend {
    margin-top: 20px;
    padding: 16px;
    background: rgba(74, 144, 226, 0.1);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--secondary-color);
}

.chart-legend p {
    margin: 6px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.chart-legend strong {
    color: var(--text-primary);
}

/* 自定义分析结果 */
.custom-analysis-content {
    padding: 20px;
}

.feasibility-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    margin: 16px 0;
}

.feasibility-indicator.high {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.feasibility-indicator.medium {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.feasibility-indicator.low {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.analysis-details {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--primary-color);
}

.analysis-details h3 {
    margin-bottom: 12px;
    color: var(--text-primary);
}

.analysis-details p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 8px;
}

/* 交易历史 */
.trade-history-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.toggle-trades-btn {
    width: 100%;
    padding: 12px 20px;
    background: rgba(74, 144, 226, 0.15);
    border: 1px solid rgba(74, 144, 226, 0.3);
    border-radius: var(--border-radius-sm);
    color: var(--secondary-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.toggle-trades-btn:hover {
    background: rgba(74, 144, 226, 0.25);
    border-color: rgba(74, 144, 226, 0.5);
    transform: translateY(-2px);
}

.trade-history-content {
    margin-top: 16px;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.trade-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
}

.trade-stat-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: center;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

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

/* 交易历史标题 */
.trade-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.trade-history-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.trade-summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.trade-history-table-wrapper {
    border-radius: var(--border-radius-sm);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-height: 400px;
    overflow-y: auto;
}

.trade-history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.trade-history-table thead {
    background: rgba(255, 255, 255, 0.08);
    position: sticky;
    top: 0;
    z-index: 2;
}

.trade-history-table th {
    padding: 12px 8px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
}

.trade-history-table td {
    padding: 10px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.85rem;
}

.trade-history-table td:first-child {
    padding-left: 12px;
    font-weight: 500;
}

.trade-history-table td:last-child {
    padding-right: 12px;
}

.trade-history-table tbody tr {
    transition: var(--transition);
}

.trade-history-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.trade-history-table tbody tr:last-child td {
    border-bottom: none;
}

.trade-action {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
    min-width: 60px;
    text-align: center;
}

.trade-action.buy-action {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.trade-action.sell-action {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.trade-reason {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.8rem;
    line-height: 1.3;
    max-width: 150px;
    word-wrap: break-word;
    white-space: normal;
}

/* 移动端交易历史卡片布局 */
@media (max-width: 768px) {
    .trade-history-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 12px;
    }
    
    .trade-history-header h4 {
        font-size: 1rem;
    }
    
    .trade-summary {
        font-size: 0.85rem;
    }
    
    .trade-history-table-wrapper {
        background: transparent;
        border: none;
        max-height: none;
    }
    
    .trade-history-table {
        display: none;
    }
    
    .trade-history-mobile {
        display: block;
    }
    
    .trade-item-card {
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--border-radius-sm);
        padding: 16px;
        margin-bottom: 12px;
        transition: var(--transition);
    }
    
    .trade-item-card:hover {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.2);
    }
    
    .trade-item-card:last-child {
        margin-bottom: 0;
    }
    
    .trade-item-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 12px;
        padding-bottom: 12px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .trade-item-date {
        font-weight: 600;
        color: var(--text-primary);
        font-size: 0.95rem;
    }
    
    .trade-item-details {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        font-size: 0.85rem;
    }
    
    .trade-item-detail {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }
    
    .trade-item-detail.full-width {
        grid-column: 1 / -1;
    }
    
    .trade-item-label {
        color: var(--text-secondary);
        font-size: 0.8rem;
    }
    
    .trade-item-value {
        color: var(--text-primary);
        font-weight: 600;
    }
    
    .trade-item-reason {
        margin-top: 8px;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        color: var(--text-secondary);
        font-style: italic;
        font-size: 0.8rem;
        line-height: 1.4;
    }
}

/* 隐藏移动端卡片布局在桌面端 */
.trade-history-mobile {
    display: none;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    margin: 8px 0;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .title {
        font-size: 2rem;
    }
    
    .title-icon {
        font-size: 2.5rem;
    }
    
    .custom-settings {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 300px;
    }
    
    .card {
        padding: 20px;
    }
    
    .result-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .result-metric {
        padding: 8px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 12px;
    }
    
    .header {
        padding: 40px 12px;
    }
    
    .title {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 8px;
    }
    
    .title-icon {
        font-size: 2rem;
    }
    
    .btn-primary {
        width: 100%;
        justify-content: center;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .strategies-grid {
        grid-template-columns: 1fr;
    }
    
    .result-card-header {
        padding: 16px 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .result-strategy-info {
        width: 100%;
        justify-content: space-between;
    }
    
    .result-card-summary {
        width: 100%;
        justify-content: space-around;
        gap: 12px;
    }
    
    .summary-metric {
        flex: 1;
        text-align: center;
    }
    
    .summary-label {
        font-size: 0.75rem;
    }
    
    .summary-value {
        font-size: 0.9rem;
    }
    
    .result-card-content {
        padding: 0 20px 20px;
    }
    
    .result-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        padding: 12px;
    }
    
    .result-metric {
        padding: 8px;
    }
    
    .result-metric-value {
        font-size: 1rem;
    }
    
    .trade-stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .scroll-hint {
        font-size: 0.75rem;
        padding: 6px;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: rgba(247, 147, 26, 0.3);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(247, 147, 26, 0.5);
}