/* Breadcrumb */
.breadcrumb {
    background: var(--color-white);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-gray-lighter);
    position: fixed;
    top: 5rem;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(10px);
}
.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-gray);
}
.breadcrumb-nav a {
    color: var(--color-green-primary);
    text-decoration: none;
    transition: color var(--transition-normal);
}
.breadcrumb-nav a:hover {
    color: var(--color-green-light);
}
.breadcrumb-nav i {
    color: var(--color-gray-light);
    font-size: 0.8rem;
}
/* Product Header */
.product-header {
    background: var(--color-white);
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}
.product-hero {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-2xl);
    align-items: center;
}
.product-info h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: slideInUp 1s ease-out 0.3s forwards;
}
.product-subtitle {
    font-size: 1.2rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    animation: slideInUp 1s ease-out 0.6s forwards;
}
.product-image-container {
    position: relative;
    background: linear-gradient(135deg, var(--color-light) 0%, var(--color-gray-lighter) 100%);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    opacity: 0;
    animation: slideInRight 1s ease-out 0.9s forwards;
}
.product-image-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(114, 176, 29, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(63, 125, 32, 0.1) 0%, transparent 50%);
}
.product-image {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}
.product-image i {
    font-size: 6rem;
    color: var(--color-green-primary);
    opacity: 0.8;
    animation: float 3s ease-in-out infinite;
}
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}
/* Main Content */
.container .main-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}
.content-section {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    transform: translateY(30px);
    animation: revealSection 0.8s ease-out forwards;
}
.content-section:nth-child(1) { animation-delay: 0.2s; }
.content-section:nth-child(2) { animation-delay: 0.4s; }
.content-section:nth-child(3) { animation-delay: 0.6s; }
@keyframes revealSection {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-sm);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-green-primary), var(--color-green-light));
    border-radius: var(--border-radius-full);
}
/* Technical Specifications Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
}
.specs-table th,
.specs-table td {
    padding: var(--spacing-md);
    text-align: right;
    border-bottom: 1px solid var(--color-gray-lighter);
    transition: background-color var(--transition-normal);
}
.specs-table th {
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-green-light));
    color: var(--color-white);
    font-weight: 600;
}
.specs-table tr:hover {
    background: rgba(114, 176, 29, 0.05);
}
.specs-table td:first-child {
    font-weight: 500;
    color: var(--color-gray-dark);
}
.specs-table td:last-child {
    color: var(--color-green-dark);
    font-weight: 500;
}
/* Standards Section */
.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}
.standard-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(114, 176, 29, 0.05), rgba(63, 125, 32, 0.05));
    border-radius: var(--border-radius-md);
    border-right: 4px solid var(--color-green-primary);
    transition: all var(--transition-normal);
}
.standard-item:hover {
    transform: translateX(-5px);
    box-shadow: var(--shadow-md);
}
.standard-item i {
    color: var(--color-green-primary);
    font-size: 1.2rem;
}
.standard-item span {
    font-weight: 500;
    color: var(--color-gray-dark);
}
/* Sidebar */
.sidebar-box {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}
.sidebar-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-green-primary);
}
.sidebar-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
}
/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-green-light));
    color: var(--color-white);
}
.btn-secondary {
    background: var(--color-white);
    color: var(--color-green-primary);
    border: 2px solid var(--color-green-primary);
}
.btn-outline {
    background: transparent;
    color: var(--color-gray-dark);
    border: 2px solid var(--color-gray-light);
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(114, 176, 29, 0.3);
}
.btn-secondary:hover {
    background: var(--color-green-primary);
    color: var(--color-white);
}
.btn-outline:hover {
    background: var(--color-gray-dark);
    color: var(--color-white);
    border-color: var(--color-gray-dark);
}
/* Download Links */
.download-links {
    list-style: none;
}
.download-links li {
    margin-bottom: var(--spacing-sm);
}
.download-links a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    color: var(--color-gray-dark);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
}
.download-links a:hover {
    border: 1px solid rgba(114, 176, 29, 0.1);
    color: var(--color-green-dark);
    transform: translateX(-5px);
}
.download-links i {
    color: var(--color-green-primary);
}
/* FAQ Section */
.faq-section {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}
.faq-item {
    border-bottom: 1px solid var(--color-gray-lighter);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}
.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.faq-question {
    font-weight: 600;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: color var(--transition-normal);
}
.faq-question:hover {
    color: var(--color-green-primary);
}
.faq-question i {
    transition: transform var(--transition-normal);
}
.faq-answer {
    color: var(--color-gray);
    line-height: 1.7;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}
.faq-item.active .faq-answer {
    max-height: 200px;
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}
/* Product Description */
.product-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
}
.product-description p {
    margin-bottom: var(--spacing-lg);
}
.highlight-box {
    background: linear-gradient(135deg, rgba(114, 176, 29, 0.1), rgba(63, 125, 32, 0.1));
    border-left: 4px solid var(--color-green-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin: var(--spacing-lg) 0;
}
.highlight-box h4 {
    color: var(--color-green-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}
/* Responsive Design */
@media (max-width: 1024px) {
    .container .main-content {
        grid-template-columns: 1fr;
    }
    .product-hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .product-image-container {
        order: -1;
    }
}
@media (max-width: 768px) {
    .product-info h1 {
        font-size: 2rem;
    }
    .product-subtitle {
        font-size: 1rem;
    }
    .content-section {
        padding: var(--spacing-lg);
    }
    .sidebar-card {
        padding: var(--spacing-lg);
    }
    .standards-grid {
        grid-template-columns: 1fr;
    }
    .specs-table {
        font-size: 0.9rem;
    }
    .specs-table th,
    .specs-table td {
        padding: var(--spacing-sm);
    }
}
@media (max-width: 480px) {
    .product-info h1 {
        font-size: 1.8rem;
    }
    .breadcrumb-nav {
        font-size: 0.8rem;
    }
    .action-buttons {
        gap: var(--spacing-sm);
    }
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
}
/* Loading Animation */
.loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-gray-lighter);
    z-index: 1000;
}
.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-green-primary), var(--color-green-light));
    width: 0;
    animation: loadingAnimation 2s ease-out forwards;
}
@keyframes loadingAnimation {
    to { width: 100%; }
}
/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-green-light));
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(100px);
    transition: all var(--transition-normal);
    z-index: 1000;
}
.scroll-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}
@keyframes ripple {
        to {
            transform: scale(4);
            opacity: 0;
        }
    }