/* ========================================
   Solutions Page Styles
   专用于Solutions页面的样式
   ======================================== */

/* ========================================
   Hero Section
   ======================================== */
.solutions-hero-section {
    padding: calc(var(--header-height) + var(--spacing-4xl)) 0 var(--spacing-2xl);
    background-color: #fff;
}

.solutions-hero-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 500;
    color: var(--text-primary-dark);
    line-height: 1.3;
    margin-bottom: var(--spacing-lg);
    max-width: 900px;
}

.solutions-hero-description {
    font-size: var(--font-size-base);
    color: var(--text-primary-dark-lighter);
    line-height: 1.7;
    max-width: 900px;
    margin: 0;
}

/* ========================================
   Solutions Tabs Navigation
   ======================================== */
.solutions-tabs-section {
    background-color: #fff;
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid #e5e7eb;
}

.solutions-tabs {
    display: flex;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.solutions-tab {
    background: none;
    border: none;
    font-size: var(--font-size-sm);
    color: var(--text-primary-dark-lighter);
    cursor: pointer;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color 0.3s ease;
    white-space: nowrap;
}

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

.solutions-tab.active {
    color: var(--text-primary-dark);
    font-weight: 500;
}

.solutions-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary-dark);
}

/* ========================================
   Exporters Section
   ======================================== */
.exporters-section {
    background: linear-gradient(180deg, #f9fafb 0%, #f3f4f6 100%);
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
}

/* Add a decorative background shape */
.exporters-section::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

/* 标题和卡片一起组成3列2行的网格 */
.exporters-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* 将标题设计成卡片样式 */
.exporters-title {
    background: #fff;
    padding: var(--spacing-xl);
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: var(--text-primary-dark);
    margin: 0;
    text-align: center;
    transition: all 0.3s ease;
}

.exporters-title:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.exporter-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.exporter-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.exporter-card:hover {
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-5px);
    border-color: transparent;
}

.exporter-card:hover::after {
    transform: scaleX(1);
}

.exporter-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.exporter-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-primary-dark-lighter);
    line-height: 1.6;
    margin: 0;
}

.card-icon-wrapper {
    width: 48px;
    height: 48px;
    background: rgba(1, 89, 189, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.exporter-card:hover .card-icon-wrapper,
.financial-card:hover .card-icon-wrapper {
    background: var(--color-primary);
    transform: scale(1.1);
}

.card-icon-svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    transition: all 0.3s ease;
}

.exporter-card:hover .card-icon-svg,
.financial-card:hover .card-icon-svg {
    color: #fff;
}

/* ========================================
   Importers Section
   ======================================== */
.importers-section {
    background-color: #052E5C;
    padding: var(--spacing-4xl) 0;
}

.importers-title {
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: #fff;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.importers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.importer-card {
    text-align: left;
    border-radius: 5px;
    background: #fff;
    padding: 20px;
}

.importer-icon {
    width: 56px;
    height: 56px;
    background: #f5f5f5;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.importer-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.importer-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.importer-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-primary-dark-lighter);
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   Logistics Section
   ======================================== */
.logistics-section {
    background-color: #fff;
    padding: var(--spacing-4xl) 0;
    border-top: 1px solid #e5e7eb;
}

.logistics-title {
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: var(--text-primary-dark);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.logistics-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.logistics-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.logistics-item {
    padding: var(--spacing-lg) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.logistics-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--spacing-lg);
    width: 8px;
    height: 8px;
    background-color: var(--color-primary);
    border-radius: 50%;
    margin-top: 6px;
}

.logistics-item-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary-dark);
    margin-bottom: var(--spacing-xs);
}

.logistics-item-desc {
    font-size: var(--font-size-sm);
    color: var(--text-primary-dark-lighter);
    line-height: 1.6;
    margin: 0;
}

.logistics-image {
    width: 100%;
    height: 300px;
    border-radius: 10px;
    overflow: hidden;
}

.logistics-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   Financial Institutions Section
   ======================================== */
.financial-section {
    background-color: #fff;
    background-image:
        linear-gradient(rgba(229, 231, 235, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(229, 231, 235, 0.3) 1px, transparent 1px);
    background-size: 40px 40px;
    padding: var(--spacing-4xl) 0;
    border-top: 1px solid #e5e7eb;
    position: relative;
}

.financial-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    background: linear-gradient(to top, #fff, transparent);
    pointer-events: none;
}

/* 改为3列等宽网格布局 */
.financial-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* 将标题也设计成块样式，保留左边框风格 */
.financial-title {
    background: #fff;
    border-left: 1px solid #e5e7eb;
    padding: var(--spacing-lg);
    padding-left: var(--spacing-xl);
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    font-size: var(--font-size-2xl);
    font-weight: 400;
    color: var(--text-primary-dark);
    margin: 0;
    line-height: 1.4;
}

/* 保留原来的左边框样式 */
.financial-card {
    background: rgba(255, 255, 255, 0.9);
    border-left: 3px solid #e5e7eb;
    padding: var(--spacing-lg);
    padding-left: var(--spacing-xl);
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    position: relative;
    overflow: hidden;
}

.financial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.8) 50%, rgba(255, 255, 255, 0) 100%);
    transform: translateX(-100%);
    transition: transform 0.6s;
    z-index: 1;
    pointer-events: none;
}

.financial-card:hover {
    border-left-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    transform: translateX(5px);
}

.financial-card:hover::before {
    transform: translateX(100%);
}

.financial-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.financial-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-primary-dark-lighter);
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   Governments & Researchers Section
   ======================================== */
.governments-section {
    background-image: url('../images/solutions_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    padding: var(--spacing-4xl) 0;
}

.governments-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.governments-section .container {
    position: relative;
    z-index: 1;
}

.governments-title {
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: #fff;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.governments-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.government-card {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-xl);
    backdrop-filter: blur(10px);
}

.government-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.government-card-desc {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   Academic Institution Section
   ======================================== */
.academic-section {
    background-color: #fff;
    padding: var(--spacing-4xl) 0;
}

.academic-title {
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: var(--text-primary-dark);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.academic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.academic-card {
    text-align: left;
}

.academic-image {
    width: 100%;
    height: 180px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.academic-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.academic-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.academic-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-primary-dark-lighter);
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   分隔线样式
   ======================================== */
.solutions-divider {
    border: none;
    border-top: 1px dashed #d1d5db;
    margin: 0;
}

/* ========================================
   Responsive Design
   ======================================== */
@media screen and (max-width: 1024px) {

    /* 平板设备上改为2列 */
    .exporters-layout {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .logistics-layout {
        grid-template-columns: 1fr;
    }

    .logistics-image {
        order: -1;
    }

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

    .academic-card:last-child {
        grid-column: 1 / -1;
        max-width: 400px;
        justify-self: center;
    }
}

@media screen and (max-width: 768px) {
    .solutions-hero-section {
        padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-xl);
    }

    .solutions-hero-title {
        font-size: 28px;
    }

    .solutions-tabs {
        gap: var(--spacing-lg);
    }

    .solutions-tab {
        font-size: var(--font-size-xs);
    }

    /* 手机设备上改为单列布局 */
    .exporters-layout {
        grid-template-columns: 1fr;
    }

    .financial-layout {
        grid-template-columns: 1fr;
    }

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

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

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

    .academic-card:last-child {
        max-width: none;
    }
}

@media screen and (max-width: 480px) {
    .solutions-hero-title {
        font-size: 24px;
    }

    .solutions-tabs {
        justify-content: center;
    }

    .exporters-title,
    .importers-title,
    .logistics-title,
    .financial-title,
    .governments-title,
    .academic-title {
        font-size: var(--font-size-xl);
    }

    .logistics-image {
        height: 200px;
    }

    .academic-image {
        height: 150px;
    }
}