/* ============================================================
   LANDING 680-700W — Custom Style Guide
   ============================================================ */

:root {
    --primary-color: #16a34a; /* Green checkmark & subtitles */
    --primary-hover: #15803d;
    --text-main: #0f172a; /* Sleek dark text */
    --text-muted: #475569; /* Slate for descriptions */
    --bg-main: #f8fafc; /* Sleek light-grey page bg */
    --bg-card: #ffffff;
    --bg-tag: #f8fafc;
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.03);
    --border-radius-lg: 16px;
    --border-radius-md: 8px;
    --border-radius-sm: 6px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.landing-showcase-section {
    background-color: var(--bg-main);
    padding: 80px 0;
    min-height: calc(100vh - 200px); /* Fill space between header and footer */
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    padding: 40px;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    transition: var(--transition-smooth);
}

.product-card:hover {
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.12), 0 1px 5px rgba(0, 0, 0, 0.04);
}

.product-grid {
    display: grid;
    grid-template-columns: 43% 57%;
    gap: 40px;
    align-items: stretch;
}

/* Image Column Styles */
.product-image-container {
    display: flex;
    flex-direction: column;
}

.product-image-box {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
    min-height: 400px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.product-image-box:hover {
    border-color: #cbd5e1;
}

.product-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.product-image-box:hover .product-img {
    transform: scale(1.02);
}

/* Content Column Styles */
.product-info-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 10px;
}

.product-title {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: clamp(24px, 2.5vw, 32px);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.product-subtitle {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
    text-transform: none;
    letter-spacing: 0.2px;
}

.product-advantages {
    list-style: none;
    padding: 0;
    margin: 0 0 24px 0;
}

.product-advantages li {
    display: flex;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    color: var(--text-main);
    line-height: 1.5;
}

.product-advantages li:first-child {
    padding-top: 0;
}

.checkmark-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    margin-right: 12px;
    margin-top: 2px;
    flex-shrink: 0;
}

.advantage-text {
    flex-grow: 1;
}

/* Badge tags style */
.product-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.badge-tag {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    background-color: var(--bg-tag);
    border: 1px solid #cbd5e1;
    border-radius: var(--border-radius-sm);
    padding: 8px 14px;
    transition: var(--transition-smooth);
}

.badge-tag:hover {
    color: var(--text-main);
    border-color: #94a3b8;
    background-color: #f1f5f9;
    cursor: default;
}

/* Description style */
.product-description {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-muted);
    margin: 0;
    border-top: 1px solid transparent;
}

/* ============================================================
   LANDING 680-700W — Detail Main Section Layout
   ============================================================ */

.landing-details-section {
    background-color: var(--bg-main);
    padding: 0 0 80px 0;
}

.details-layout {
    display: grid;
    grid-template-columns: 7fr 3fr;
    gap: 30px;
    align-items: start;
}

.details-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    padding: 40px;
    transition: var(--transition-smooth);
}

.details-card:hover {
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.12), 0 1px 5px rgba(0, 0, 0, 0.04);
}

.details-card-title {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    margin-top: 0;
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 2.5px solid var(--primary-color);
    letter-spacing: -0.3px;
    text-transform: none;
}

/* Parameters Table Styling */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 20px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.parameters-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    color: var(--text-main);
}

.parameters-table th,
.parameters-table td {
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    vertical-align: middle;
}

.parameters-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-main);
    text-align: center;
}

.parameters-table th:first-child {
    text-align: left;
}

.parameters-table td {
    text-align: center;
    background-color: var(--bg-card);
}

.parameters-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--text-main);
}

.parameters-table tr:hover td {
    background-color: #f8fafc;
}

.table-note {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--text-muted);
    margin: 0;
    font-style: italic;
}

/* Card Spacing */
.details-card + .details-card {
    margin-top: 30px;
}

/* Ratings Grid & Box Styling */
.ratings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.rating-box {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition-smooth);
}

.rating-box:hover {
    border-color: #cbd5e1;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.rating-power {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.rating-efficiency {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 6px;
}

.rating-label {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 14px;
    color: var(--text-muted);
}

/* Mechanical & Operational Specs Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    color: var(--text-main);
}

.specs-table th,
.specs-table td {
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    vertical-align: middle;
    text-align: left;
}

.specs-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-main);
}

.specs-table td {
    background-color: var(--bg-card);
}

.specs-table td:first-child {
    font-weight: 500;
    width: 45%;
}

.specs-table tr:hover td {
    background-color: #f8fafc;
}

/* Related Article Styles */
.related-article-box {
    background-color: #f8fafc;
    border-left: 4px solid var(--primary-color);
    border-radius: 8px;
    padding: 20px 24px;
    transition: var(--transition-smooth);
}

.related-article-box:hover {
    background-color: #f1f5f9;
}

.related-article-link {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.related-article-link:hover {
    color: var(--primary-color);
}

/* Category List Styles */
.categories-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.categories-list li {
    border-bottom: 1px solid var(--border-color);
}

.categories-list li:last-child {
    border-bottom: none;
}

.category-item {
    display: flex;
    align-items: center;
    padding: 14px 0;
    color: var(--text-main);
    text-decoration: none;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.category-arrow {
    color: var(--primary-color);
    font-size: 20px;
    font-weight: bold;
    margin-right: 12px;
    line-height: 1;
    transition: var(--transition-smooth);
    display: inline-block;
}

.category-item:hover {
    color: var(--primary-color);
}

.category-item:hover .category-arrow {
    transform: translateX(4px);
}

/* Contact Information Styles */
.contact-info-content {
    display: flex;
    flex-direction: column;
}

.contact-company {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-main);
    margin: 0 0 12px 0;
    text-transform: none;
}

.contact-address {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-muted);
    margin: 0 0 16px 0;
}

.contact-detail {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.4;
    color: var(--text-muted);
    margin: 0 0 8px 0;
}

.contact-detail strong {
    font-weight: 600;
    color: var(--text-main);
}

.contact-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.contact-link:hover {
    color: var(--primary-color);
}

.btn-contact-request {
    display: block;
    width: 100%;
    text-align: center;
    background-color: var(--primary-color);
    color: #ffffff !important;
    padding: 14px 20px;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    text-decoration: none;
    margin-top: 24px;
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.15);
    transition: var(--transition-smooth);
    border: none;
}

.btn-contact-request:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(22, 163, 74, 0.25);
    text-decoration: none;
}

/* ============================================================
   RESPONSIVE DESIGN (Media queries)
   ============================================================ */

@media (max-width: 991px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-card {
        padding: 30px;
    }
    
    .product-image-box {
        min-height: 350px;
    }
    
    .product-info-container {
        padding-left: 0;
    }

    .details-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .details-card {
        padding: 30px;
    }

    .ratings-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 575px) {
    .landing-showcase-section {
        padding: 40px 0;
    }

    .landing-details-section {
        padding-bottom: 40px;
    }
    
    .product-card {
        padding: 20px;
        border-radius: var(--border-radius-md);
    }
    
    .product-image-box {
        min-height: 280px;
        padding: 20px;
    }
    
    .product-title {
        font-size: 22px;
        margin-bottom: 16px;
    }
    
    .product-subtitle {
        font-size: 16px;
        margin-bottom: 12px;
    }
    
    .product-advantages li {
        font-size: 14px;
        padding: 10px 0;
    }
    
    .badge-tag {
        font-size: 12px;
        padding: 6px 12px;
    }
    
    .product-description {
        font-size: 14px;
    }

    .details-card {
        padding: 20px;
        border-radius: var(--border-radius-md);
    }
    
    .details-card-title {
        font-size: 20px;
        margin-bottom: 18px;
        padding-bottom: 10px;
    }
    
    .parameters-table th,
    .parameters-table td,
    .specs-table th,
    .specs-table td {
        padding: 10px 12px;
        font-size: 13.5px;
    }
    
    .table-note {
        font-size: 12px;
    }

    .details-card + .details-card {
        margin-top: 20px;
    }

    .ratings-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-top: 18px;
    }

    .rating-box {
        padding: 18px 15px;
    }

    .rating-power {
        font-size: 22px;
        margin-bottom: 6px;
    }

    .rating-efficiency {
        font-size: 14px;
        margin-bottom: 4px;
    }

    .rating-label {
        font-size: 12.5px;
    }

    .related-article-box {
        padding: 16px 18px;
    }

    .related-article-link {
        font-size: 14.5px;
    }

    .category-item {
        padding: 10px 0;
        font-size: 14px;
    }

    .category-arrow {
        font-size: 18px;
        margin-right: 10px;
    }

    .contact-company {
        font-size: 15px;
        margin-bottom: 10px;
    }

    .contact-address {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .contact-detail {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .btn-contact-request {
        padding: 12px 18px;
        font-size: 15px;
        margin-top: 18px;
    }
}