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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    color: #333;
    line-height: 1.6;
}

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

/* Header */
header {
    background: linear-gradient(135deg, #8B4513 0%, #A0522D 100%);
    color: white;
    padding: 0;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: relative;
}

.header-top {
    background: rgba(0, 0, 0, 0.2);
    padding: 10px 0;
}

.header-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 20px;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    padding: 8px 20px;
    border-radius: 20px;
    transition: background 0.3s ease, transform 0.2s ease;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

header > .container {
    padding: 20px 20px;
}

.logo {
    margin-bottom: 10px;
}

.logo img {
    max-width: 120px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

header h1 {
    font-size: 1.8em;
    margin-bottom: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1em;
    opacity: 0.9;
    margin-bottom: 10px;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    transition: background 0.3s ease, transform 0.2s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.contact-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.contact-btn svg {
    width: 18px;
    height: 18px;
}

/* Main Content */
main {
    padding: 60px 0;
    min-height: calc(100vh - 300px);
}

/* History Section */
.history-section {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 50px;
    scroll-margin-top: 100px;
}

.history-section h2 {
    color: #8B4513;
    font-size: 2em;
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 3px solid #8B4513;
    padding-bottom: 15px;
}

.history-content {
    max-width: 900px;
    margin: 0 auto;
}

.history-content p {
    margin-bottom: 20px;
    font-size: 1.1em;
    line-height: 1.8;
    color: #555;
    text-align: justify;
}

.history-footer {
    font-style: italic;
    color: #8B4513;
    font-weight: bold;
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

/* Capacities Section */
.capacities-section {
    text-align: center;
    margin-bottom: 40px;
}

.capacities-section h2 {
    color: #8B4513;
    font-size: 2.2em;
    margin-bottom: 15px;
}

.capacities-intro {
    font-size: 1.3em;
    color: #666;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 30px;
}

/* Product Card */
.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: #f8f8f8;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    font-size: 1.4em;
    margin-bottom: 10px;
    color: #8B4513;
}

.product-capacity {
    display: inline-block;
    background: #8B4513;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: bold;
    margin-bottom: 10px;
}

.product-description {
    color: #666;
    margin-bottom: 15px;
    flex-grow: 1;
    font-size: 0.95em;
}

.product-price {
    font-size: 1.3em;
    font-weight: bold;
    color: #8B4513;
    margin-bottom: 20px;
    text-align: center;
    padding: 10px;
    background: #f8f8f8;
    border-radius: 8px;
}

/* Buy Button */
.btn-buy {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #25D366;
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: background 0.3s ease, transform 0.2s ease;
    cursor: pointer;
    border: none;
    width: 100%;
}

.btn-buy:hover {
    background: #20BA5A;
    transform: scale(1.02);
}

.btn-buy:active {
    transform: scale(0.98);
}

.btn-buy svg {
    width: 24px;
    height: 24px;
}

/* Footer */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Responsive */
@media (max-width: 768px) {
    .header-nav {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-link {
        font-size: 1em;
        padding: 6px 15px;
    }
    
    .contact-btn {
        font-size: 0.9em;
        padding: 8px 16px;
    }
    
    header > .container {
        padding: 15px 20px;
    }
    
    .logo img {
        max-width: 100px;
    }
    
    header h1 {
        font-size: 1.5em;
    }
    
    .subtitle {
        font-size: 0.9em;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .product-image {
        height: 200px;
    }
    
    .history-section {
        padding: 25px 20px;
    }
    
    .history-section h2 {
        font-size: 1.5em;
    }
    
    .history-content p {
        font-size: 1em;
    }
    
    .capacities-section h2 {
        font-size: 1.8em;
    }
    
    .capacities-intro {
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    header {
        padding: 0;
    }
    
    .logo img {
        max-width: 150px;
    }
    
    header h1 {
        font-size: 1.5em;
    }
    
    main {
        padding: 30px 0;
    }
}