/* ============================================
   拼车广场页面样式 (TASK005)
   ============================================ */

/* 页面标题区域 */
.carpool-header {
    text-align: center;
    padding: 3rem 0 2rem;
    position: relative;
}

.carpool-header-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.carpool-header-description {
    font-size: 1.125rem;
    color: var(--bs-secondary-color, #6b7280);
    max-width: 600px;
    margin: 0 auto;
}

[data-bs-theme="dark"] .carpool-header-description {
    color: var(--bs-secondary-color, #9ca3af);
}

/* 筛选卡片 */
.carpool-filter-card {
    background: var(--global-bg-tertiary, var(--bs-body-tertiary-bg, #f5f5f5));
    border: none;
    border-radius: var(--global-border-radius, 1.5rem);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.carpool-filter-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
}

[data-bs-theme="dark"] .carpool-filter-card {
    background: var(--global-bg-tertiary, var(--bs-body-tertiary-bg, #1f2937));
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
}

.carpool-filter-card-body {
    padding: 1.5rem;
}

/* 筛选表单项 */
.carpool-filter-item {
    position: relative;
}

.carpool-filter-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--global-text-emphasis, var(--bs-emphasis-color, #1f2937));
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.carpool-filter-label-icon {
    font-size: 1rem;
    color: #4b5563;
    flex-shrink: 0;
}

[data-bs-theme="dark"] .carpool-filter-label {
    color: var(--bs-emphasis-color, #e5e7eb);
}

.carpool-filter-select {
    border-radius: 0.5rem;
    border: 2px solid var(--bs-border-color, #e5e7eb);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
}

.carpool-filter-select:focus {
    border-color: #4b5563;
    box-shadow: 0 0 0 3px rgba(75, 85, 99, 0.1);
    outline: none;
}

[data-bs-theme="dark"] .carpool-filter-select {
    border-color: var(--bs-border-color, #4b5563);
    background: var(--bs-secondary-bg, #1f2937);
    color: var(--bs-emphasis-color, #e5e7eb);
}

[data-bs-theme="dark"] .carpool-filter-select:focus {
    border-color: #6b7280;
    box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.1);
}

/* 筛选按钮组 */
.carpool-filter-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.carpool-filter-btn {
    border-radius: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.carpool-filter-btn-primary {
    background: #4b5563;
    border-color: #4b5563;
    color: #fff;
}

.carpool-filter-btn-primary:hover {
    background: #374151;
    border-color: #374151;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(75, 85, 99, 0.3);
}

.carpool-filter-btn-secondary {
    background: transparent;
    border-color: var(--bs-border-color, #e5e7eb);
    color: var(--bs-emphasis-color, #1f2937);
}

.carpool-filter-btn-secondary:hover {
    background: var(--bs-secondary-bg, #f3f4f6);
    border-color: var(--bs-border-color, #d1d5db);
    transform: translateY(-2px);
}

[data-bs-theme="dark"] .carpool-filter-btn-secondary {
    border-color: var(--bs-border-color, #4b5563);
    color: var(--bs-emphasis-color, #e5e7eb);
}

[data-bs-theme="dark"] .carpool-filter-btn-secondary:hover {
    background: var(--bs-secondary-bg, #374151);
    border-color: var(--bs-border-color, #6b7280);
}

/* 结果统计 */
.carpool-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--bs-border-color, #e5e7eb);
}

[data-bs-theme="dark"] .carpool-results-header {
    border-bottom-color: var(--bs-border-color, #374151);
}

.carpool-results-count {
    font-size: 0.875rem;
    color: var(--global-text-secondary, var(--bs-secondary-color, #6b7280));
}

.carpool-results-count-number {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--global-text-emphasis, #4b5563);
    margin: 0 0.25rem;
}

[data-bs-theme="dark"] .carpool-results-count {
    color: var(--bs-secondary-color, #9ca3af);
}

/* 空状态提示 */
.carpool-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bs-body-bg, #fff);
    border-radius: 1rem;
    border: 2px dashed var(--bs-border-color, #e5e7eb);
}

[data-bs-theme="dark"] .carpool-empty-state {
    background: var(--bs-secondary-bg, #1f2937);
    border-color: var(--bs-border-color, #374151);
}

.carpool-empty-state-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    opacity: 0.4;
    color: var(--bs-secondary-color, #6b7280);
}

.carpool-empty-state-icon svg {
    width: 100%;
    height: 100%;
}

.carpool-empty-state-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--bs-emphasis-color, #1f2937);
}

.carpool-empty-state-description {
    font-size: 1rem;
    color: var(--bs-secondary-color, #6b7280);
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.carpool-empty-state-action {
    margin-top: 1.5rem;
}

[data-bs-theme="dark"] .carpool-empty-state-title {
    color: var(--bs-emphasis-color, #e5e7eb);
}

[data-bs-theme="dark"] .carpool-empty-state-icon {
    color: var(--bs-secondary-color, #9ca3af);
}

/* 拼车说明卡片 */
.carpool-info-card {
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
    border: none;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.2);
    position: relative;
    overflow: hidden;
}

.carpool-info-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.carpool-info-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.carpool-info-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #fff;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.carpool-info-card-title-icon {
    font-size: 1.75rem;
}

.carpool-info-card-action {
    position: relative;
    z-index: 1;
}

.carpool-info-card-action .btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.carpool-info-card-action .btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.carpool-info-card-content {
    position: relative;
    z-index: 1;
}

.carpool-info-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    padding: 1.25rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    height: 100%;
}

@media (hover: hover) and (pointer: fine) {
    .carpool-info-item:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-4px);
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    }
}

.carpool-info-item-title {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.carpool-info-item-description {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 767.98px) {
    .carpool-header {
        padding: 2rem 0 1.5rem;
    }
    
    .carpool-header-title {
        font-size: 2rem;
    }
    
    .carpool-header-description {
        font-size: 1rem;
    }
    
    .carpool-filter-card-body {
        padding: 1.25rem;
    }
    
    .carpool-filter-actions {
        flex-direction: column;
    }
    
    .carpool-filter-btn {
        width: 100%;
        justify-content: center;
    }
    
    .carpool-results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .carpool-empty-state {
        padding: 3rem 1.5rem;
    }
    
    .carpool-empty-state-icon {
        width: 100px;
        height: 100px;
    }
    
    .carpool-empty-state-title {
        font-size: 1.25rem;
    }
    
    .carpool-info-card {
        padding: 1.5rem;
    }
    
    .carpool-info-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .carpool-info-card-action {
        width: 100%;
    }
    
    .carpool-info-card-action .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 暗色主题适配 */
[data-bs-theme="dark"] .carpool-info-card {
    background: linear-gradient(135deg, #374151 0%, #4b5563 100%);
    box-shadow: 0 4px 20px rgba(2, 132, 199, 0.3);
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.carpool-products-grid .product-item {
    animation: fadeIn 0.3s ease-out;
}