.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

[data-theme="light"] .form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 8px;
}

/* 城市信息卡片 */
.city-info-card {
    padding: 0;
}

.city-info-card.hidden {
    display: none;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

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

.info-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.info-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 统计卡片 - 横向布局 */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer p {
    margin-bottom: 4px;
}

/* 错误提示 */
.error-message {
    background: rgba(207, 19, 34, 0.1);
    border: 1px solid rgba(207, 19, 34, 0.3);
    color: #ff4d4f;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

/* 加载状态 */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--grid-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* 响应式优化 */
@media (max-width: 900px) {
    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}