:root {
    --primary-color: #1A365D;
    --secondary-color: #C5A059;
    --accent-color: #2D3748;
    --text-color: #2D3748;
    --bg-color: #FFFFFF;
    --light-gray: #F7FAFC;
    --border-color: #E2E8F0;
    --white: #FFFFFF;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 1px;
}

.logo span {
    color: var(--secondary-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--secondary-color);
}

/* Hero */
.hero {
    height: 60vh;
    background: linear-gradient(rgba(26, 54, 93, 0.7), rgba(26, 54, 93, 0.7)), url('../images/hero.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Products */
.products-section {
    padding: 80px 0;
    background: var(--light-gray);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.product-desc {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 20px;
}

.product-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    flex: 1;
}

.btn-primary:hover {
    background-color: #122846;
}

.btn-outline {
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    flex: 1;
}

.btn-outline:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

.modal-header {
    margin-bottom: 25px;
    text-align: center;
}

.modal-header h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary-color);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.footer-col p {
    margin-bottom: 10px;
    opacity: 0.8;
}

.copyright {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Product Detail Page */
.detail-container {
    padding: 60px 0;
}

.back-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 30px;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.detail-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.detail-info h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.detail-info .price-note {
    font-size: 1.1rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 30px;
}

.detail-info h3 {
    margin: 30px 0 15px;
    border-bottom: 2px solid var(--secondary-color);
    display: inline-block;
}

.spec-list {
    list-style: none;
    margin-bottom: 30px;
}

.spec-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

.spec-list li span:first-child {
    font-weight: 600;
    color: #666;
}

@media (max-width: 768px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .detail-info h1 {
        font-size: 1.8rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-col .logo {
        margin: 0 auto 20px;
    }

    .seo-text {
        font-size: 0.95rem;
        margin-top: 30px !important;
    }
}