/* ==================== 交易页面布局 ==================== */
.trade-container {
    margin-top: 64px;
    padding: 20px 0;
    min-height: calc(100vh - 64px);
    background-color: var(--bg-primary);
}

.trade-layout {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: 20px;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 1200px) {
    .trade-layout {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .trade-sidebar,
    .trade-sidebar-right {
        display: none;
    }
}

/* ==================== 侧边栏卡片 ==================== */
.sidebar-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 15px;
}

.sidebar-card h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

/* ==================== 交易对列表 ==================== */
.pairs-list {
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pair-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.pair-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.pair-item.active {
    background: rgba(6, 182, 212, 0.2);
    border-color: var(--color-accent);
}

.pair-info {
    flex: 1;
}

.pair-symbol {
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 3px;
}

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

.pair-change {
    font-size: 12px;
    font-weight: 600;
}

.pair-change.positive {
    color: var(--color-up);
}

.pair-change.negative {
    color: var(--color-down);
}

/* ==================== 统计信息 ==================== */
.stats-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-row:last-child {
    border-bottom: none;
}

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

/* ==================== 图表卡片 ==================== */
.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.chart-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.chart-price {
    font-size: 24px;
    font-weight: bold;
    color: var(--color-accent);
}

.chart-placeholder {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.placeholder-content {
    text-align: center;
}

.placeholder-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.placeholder-content p {
    color: var(--text-secondary);
    font-size: 14px;
}

.placeholder-subtitle {
    font-size: 12px;
    margin-top: 5px;
}

/* ==================== 标签页 ==================== */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 10px 16px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.tab-content {
    display: none;
}

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

/* ==================== 订单簿 ==================== */
.orderbook {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.orderbook-side h4 {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.asks-title {
    color: var(--color-down);
}

.bids-title {
    color: var(--color-up);
}

.orderbook-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.orderbook-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    font-size: 12px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.orderbook-row:hover {
    background: rgba(255, 255, 255, 0.02);
}

.orderbook-row .price.asks {
    color: var(--color-down);
}

.orderbook-row .price.bids {
    color: var(--color-up);
}

/* ==================== 交易列表 ==================== */
.trades-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.trade-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    font-size: 12px;
    padding: 8px;
    border-radius: 6px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.trade-row:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* ==================== 资金费率 ==================== */
.funding-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.funding-row {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 6px;
    font-size: 13px;
}

.funding-row .value {
    font-weight: 600;
    color: var(--color-accent);
}

/* ==================== 下单卡片 ==================== */
.order-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.order-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

/* ==================== 表单组 ==================== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(6, 182, 212, 0.05);
}

/* ==================== 按钮组 ==================== */
.button-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.button-group.full {
    grid-template-columns: repeat(2, 1fr);
}

.btn-small {
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-small:hover {
    background: rgba(255, 255, 255, 0.1);
}

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

.btn-side {
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-side.buy.active {
    background: rgba(0, 208, 132, 0.2);
    border-color: var(--color-up);
    color: var(--color-up);
}

.btn-side.sell.active {
    background: rgba(255, 59, 59, 0.2);
    border-color: var(--color-down);
    color: var(--color-down);
}

/* ==================== 订单信息 ==================== */
.order-info {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.info-row span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* ==================== 全宽按钮 ==================== */
.full-width {
    width: 100%;
}

/* ==================== 持仓信息 ==================== */
.position-info {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.position-info h4 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}

.position-info .info-row {
    font-size: 12px;
    padding: 6px 0;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1200px) {
    .trade-layout {
        grid-template-columns: 1fr;
    }

    .trade-sidebar,
    .trade-sidebar-right {
        display: block;
    }

    .orderbook {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .trade-container {
        padding: 10px 0;
    }

    .trade-layout {
        padding: 0 10px;
    }

    .button-group {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-placeholder {
        height: 200px;
    }
}