:root {
    --primary-blue: #3498db;
    --dark-blue: #2980b9;
    --product-primary: #27ae60;
    --product-dark: #229954;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --text-muted: #95a5a6;
    --bg-white-semi: rgba(255, 255, 255, 0.3);
    --bg-white-strong: rgba(255, 255, 255, 0.4);
    --bg-white-card: rgba(255, 255, 255, 0.5);
    --bg-white-form: rgba(255, 255, 255, 0.9);
    --bg-white-modal: rgba(255, 255, 255, 0.95);
    --bg-overlay: rgba(255, 255, 255, 0.4);
    --bg-dark-overlay: rgba(0, 0, 0, 0.6);
    --shadow-sm: 0 5px 20px rgba(0, 0, 0, 0.08);
    --shadow-card: 0 20px 40px rgba(39, 174, 96, 0.15);
    --shadow-btn: 0 10px 20px rgba(39, 174, 96, 0.3);
    --shadow-detail: 0 20px 60px rgba(0, 0, 0, 0.1);
    --border-light: 1px solid rgba(0, 0, 0, 0.1);
    --border-spec: 2px solid rgba(39, 174, 96, 0.3);
    --border-input: 2px solid #e0e0e0;
    --border-modal: 1px solid #eee;
    --radius-sm: 8px;
    --radius-card: 12px;
    --radius-product: 16px;
    --radius-lg: 20px;
    --radius-badge: 20px;
    --radius-btn: 50px;
    --image-border-radius: 20px;
    --image-frame-padding: 10px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-card: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-transform: transform 0.8s ease;
}

body {
    position: relative;
    z-index: 0;
    min-height: 100vh;
    background: url('/static/background.jpg') center/cover no-repeat fixed;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background: inherit;
    background-size: cover;
    background-position: center;
    filter: blur(40px);
    transform: scale(1.1);
}
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--bg-overlay);
    backdrop-filter: blur(10px);
}
.products-page {
    padding: 120px 0 60px;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.breadcrumbs-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-radius: 60px;
    padding: 0.3rem 1.2rem;
    margin-top: 20px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: inline-block;
    width: auto;
}
.breadcrumbs {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-dark);
}
.breadcrumbs a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s;
}
.breadcrumbs a:hover { color: var(--product-primary); }
.breadcrumbs span { margin: 0 0.5rem; color: var(--text-dark); }

.page-header {
    text-align: center;
    margin-bottom: 70px;
    animation: fadeInUp 0.8s ease;
}
.page-title {
    font-size: 3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
    display: inline-block;
}
.page-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--product-primary);
    border-radius: 2px;
}
.page-description {
    font-size: 1.125rem;
    color: var(--text-dark);
    max-width: 600px;
    margin: 2rem auto 0;
    line-height: 1.6;
}

.categories-grid,
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    justify-content: center;
}

.category-card,
.product-card {
    background: var(--bg-white-semi);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-product);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-card);
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    animation: cardAppear 0.6s ease forwards;
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
}
.category-card:hover,
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
    background: var(--bg-white-strong);
}

.category-image,
.product-image-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(248, 249, 250, 0.3);
    border-radius: var(--image-border-radius);
    overflow: hidden;
    margin: 16px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.2);
    transition: var(--transition-smooth);
}
.category-card:hover .category-image,
.product-card:hover .product-image-wrapper {
    border-color: var(--product-primary);
    box-shadow: 0 15px 25px -8px rgba(0, 0, 0, 0.3), 0 0 0 2px rgba(39, 174, 96, 0.3);
    transform: scale(1.02);
}
.category-image img,
.product-image-wrapper img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 260px;
    object-fit: contain;
    transition: transform 0.4s ease;
    border-radius: calc(var(--image-border-radius) - 4px);
}
.category-card:hover .category-image img,
.product-card:hover .product-image-wrapper img {
    transform: scale(1.06);
}

.product-overlay-info {
    position: absolute;
    bottom: 12px;
    right: 12px;
    left: auto;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    padding: 6px 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    text-align: right;
    min-width: auto;
    border: 1px solid rgba(39, 174, 96, 0.3);
    z-index: 2;
}
.product-overlay-info .product-price-overlay {
    font-size: 1rem;
    font-weight: 700;
    color: var(--product-primary);
    margin-bottom: 4px;
}
.product-overlay-info .product-availability-overlay {
    font-size: 0.7rem;
    background: var(--product-primary);
    color: white;
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    margin-bottom: 6px;
}
.product-overlay-info .request-button-overlay {
    font-size: 0.7rem;
    padding: 4px 8px;
    background: var(--product-primary);
    color: white;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    width: 100%;
    font-weight: 600;
    transition: background 0.2s;
}
.product-overlay-info .request-button-overlay:hover {
    background: var(--product-dark);
}

.category-content,
.product-content {
    padding: 1.5rem;
}
.category-name,
.product-name {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}
.category-card:hover .category-name,
.product-card:hover .product-name {
    color: var(--product-primary);
}
.category-description,
.product-description {
    color: var(--text-dark);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.category-action,
.product-action {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--product-primary);
    font-weight: 500;
    font-size: 0.875rem;
    transition: gap 0.3s;
}
.category-card:hover .category-action,
.product-card:hover .product-action {
    gap: 0.75rem;
}

.product-detail-container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--bg-white-semi);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-detail);
    animation: slideUp 0.8s ease;
    padding: 2rem;
}
.product-detail-header {
    margin-bottom: 1.5rem;
}
.product-detail-title {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}
.product-category {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: var(--bg-white-card);
    color: var(--product-primary);
    border-radius: var(--radius-badge);
    font-size: 0.875rem;
    font-weight: 500;
}

.product-detail-layout {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.product-detail-image {
    flex: 2;
    min-width: 200px;
    background: rgba(248, 249, 250, 0.3);
    border-radius: var(--radius-card);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.image-frame {
    display: inline-block;
    padding: 12px;
    background: linear-gradient(135deg, rgba(255,255,255,0.5), rgba(255,255,255,0.1));
    border-radius: 32px;
    box-shadow: 0 25px 35px -12px rgba(0, 0, 0, 0.25), inset 0 1px 1px rgba(255,255,255,0.6);
    transition: var(--transition-smooth);
}
.image-frame:hover {
    transform: scale(1.01);
    box-shadow: 0 30px 40px -15px rgba(0, 0, 0, 0.3), inset 0 1px 2px rgba(255,255,255,0.8);
}
.product-detail-image img {
    max-width: 100%;
    max-height: 400px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    border-radius: 24px;
    transition: transform 0.5s ease;
}
.image-frame:hover img {
    transform: scale(1.02);
}

.product-sidebar-card {
    flex: 1;
    min-width: 220px;
    backdrop-filter: blur(12px);
    padding: 1.2rem 1.5rem;
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid rgba(39, 174, 96, 0.3);
    align-self: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 24px;
}
.product-sidebar-card .product-price-value {
    font-size: 2rem;
    color: var(--product-primary);
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.product-sidebar-card .product-availability {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: var(--product-primary);
    color: white;
    border-radius: var(--radius-badge);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}
.product-sidebar-card .request-button {
    width: 100%;
    justify-content: center;
}

.product-specifications {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-card);
    padding: 1.5rem;
    margin-bottom: 2rem;
    margin-top: 1rem;
}
.specifications-title {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--product-primary);
}
.specifications-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.5rem 1.5rem;
}
.specifications-list li {
    padding: 0.5rem 0;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
}
.spec-label,
.spec-value {
    word-break: break-word;
    overflow-wrap: break-word;
}
.spec-label {
    font-weight: 600;
    color: var(--text-dark);
}
.spec-value {
    color: var(--product-primary);
    font-weight: 500;
    text-align: right;
}
.product-full-description {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-card);
    padding: 1.5rem;
    margin-bottom: 2rem;
}
.full-description-title {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--product-primary);
}
.description-content {
    line-height: 1.6;
    color: var(--text-dark);
}
.offer-disclaimer-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    border-radius: 60px;
    padding: 0.75rem 1.5rem;
    text-align: center;
    margin: 1.5rem 0;
    border: 1px solid rgba(0, 0, 0, 0.05);
}
.offer-disclaimer {
    font-size: 11px;
    color: var(--text-muted);
    background: transparent;
    margin: 0;
    padding: 0;
}
.back-button-wrapper {
    text-align: center;
    margin-top: 2rem;
}
.back-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: var(--bg-white-semi);
    backdrop-filter: blur(5px);
    border: 2px solid var(--product-primary);
    color: var(--product-primary);
    text-decoration: none;
    border-radius: var(--radius-btn);
    font-weight: 500;
    transition: var(--transition-smooth);
}
.back-button:hover {
    background: var(--product-primary);
    color: white;
    gap: 0.75rem;
}
.request-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: var(--product-primary);
    color: white;
    border: none;
    border-radius: var(--radius-btn);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.request-button:hover {
    background: var(--product-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn);
    gap: 1rem;
}
.empty-state {
    text-align: center;
    padding: 4rem 1rem;
}
.empty-state p {
    font-size: 1.125rem;
    color: var(--text-light);
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    inset: 0;
    background-color: var(--bg-dark-overlay);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}
.modal-content {
    background: var(--bg-white-modal);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: var(--radius-card);
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: var(--shadow-modal);
    animation: modalFadeIn 0.3s ease-out;
}
.close-modal {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.2s;
}
.close-modal:hover {
    color: var(--text-dark);
}
.modal-header h3 {
    margin-bottom: 5px;
    color: var(--text-dark);
    font-size: 1.5rem;
}
#modalProductName {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 25px;
    border-bottom: var(--border-modal);
    padding-bottom: 15px;
}
.modal-form .form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}
.modal-form .form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
}
.modal-form label {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-dark);
}
.modal-form input,
.modal-form textarea {
    padding: 12px;
    background: var(--bg-white-form);
    border: var(--border-input);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: border-color 0.2s;
}
.modal-form input:focus,
.modal-form textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    background: white;
}
.submit-kp-btn {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: 10px;
}
.submit-kp-btn:hover {
    background-color: var(--dark-blue);
}
.form-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 10px;
    text-align: center;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes cardAppear {
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 992px) {
    .categories-grid,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-detail-title {
        font-size: 2rem;
    }
}
@media (max-width: 768px) {
    .category-image img,
    .product-image-wrapper img {
        max-height: 250px;
    }
    .products-page {
        padding: 100px 0 40px;
    }
    .page-title {
        font-size: 2rem;
    }
    .categories-grid,
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .category-image,
    .product-image-wrapper {
        margin: 12px;
    }
    .product-overlay-info {
        bottom: 8px;
        right: 8px;
        padding: 4px 8px;
        min-width: 100px;
    }
    .product-overlay-info .product-price-overlay {
        font-size: 0.9rem;
    }
    .product-overlay-info .request-button-overlay {
        font-size: 0.65rem;
        padding: 3px 6px;
    }
    .category-content,
    .product-content {
        padding: 1rem;
    }
    .category-name,
    .product-name {
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }
    .category-description,
    .product-description {
        font-size: 0.8rem;
    }
    .breadcrumbs-card {
        width: 100%;
        text-align: center;
        border-radius: 30px;
        padding: 0.2rem 0.8rem;
        margin-top: 10px;
        margin-bottom: 1rem;
    }
    .container {
        padding: 0 15px;
    }
    .product-detail-layout {
        flex-direction: column;
    }
    .product-detail-image {
        max-width: 100%;
    }
    .product-sidebar-card {
        width: 100%;
    }
    .image-frame {
        padding: 8px;
    }
}
@media (max-width: 480px) {
    .products-page {
        padding: 80px 0 30px;
    }
    .page-title {
        font-size: 1.6rem;
    }
    .product-detail-title {
        font-size: 1.3rem;
    }
    .product-sidebar-card .product-price-value {
        font-size: 1.4rem;
    }
    .container {
        padding: 0 10px;
    }
    .category-image,
    .product-image-wrapper {
        margin: 8px;
    }
    .product-overlay-info {
        padding: 3px 6px;
        min-width: 80px;
    }
    .product-overlay-info .product-price-overlay {
        font-size: 0.8rem;
    }
    .product-overlay-info .request-button-overlay {
        font-size: 0.6rem;
    }
    .breadcrumbs-card {
        padding: 0.15rem 0.6rem;
        margin-top: 8px;
    }
    .image-frame {
        padding: 6px;
        border-radius: 24px;
    }
    .product-detail-image img {
        border-radius: 18px;
    }
    .specifications-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    .spec-value {
        text-align: left;
    }
}