:root {
    --primary-color: #009999;
    --primary-dark: #007777;
    --primary-light: #00bbbb;
    --accent-color: #ff6b6b;
    --light-bg: #f8f9fa;
    --dark-text: #333333;
    --medium-gray: #e9ecef;
    --light-gray: #6c757d;
    --white: #ffffff;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.12);
    --card-radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--white);
    color: var(--dark-text);
    line-height: 1.6;
}

/* Header Styles */
.page-header {
    background: var(--white);
    color: var(--dark-text);
    padding: 25px 15px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid var(--medium-gray);
}

.logo-container {
    margin-bottom: 12px;
}

.company-logo {
    max-height: 50px;
    width: auto;
}

.page-title {
    font-size: 22px; /* reduced for mobile */
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--dark-text);
}

.page-subtitle {
    font-size: 13px; /* reduced for mobile */
    color: var(--light-gray);
    font-weight: 400;
}

/* Main content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px 50px;
}

/* Section Title */
.section-title {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.section-title h2 {
    font-size: 20px; /* reduced for mobile */
    color: var(--primary-color);
    margin-bottom: 12px;
}

.section-title p {
    color: var(--light-gray);
    max-width: 500px;
    margin: 0 auto;
    font-size: 13px; /* reduced for mobile */
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

/* Category Cards Grid */
.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.category-card {
    background: var(--white);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.category-header {
    display: flex;
    align-items: center;
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--white);
}

.category-header:hover {
    background: rgba(0, 153, 153, 0.05);
}

.category-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
    margin-right: 15px;
    flex-shrink: 0;
    transition: var(--transition);
}

.category-header:hover .category-icon {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.category-title {
    font-size: 16px; /* reduced for mobile */
    font-weight: 600;
    color: var(--dark-text);
    margin-right: auto;
}

.category-description {
    display: none;
}

.expand-arrow {
    margin-left: 10px;
    transition: var(--transition);
    color: var(--primary-color);
    font-size: 16px; /* reduced for mobile */
}

.category-card.active .expand-arrow {
    transform: rotate(180deg);
}

.category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.category-card.active .category-content {
    max-height: 1000px;
}

/* Product grid */
.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.02);
}

.product-card {
    background: var(--white);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-color);
}

.product-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 153, 153, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: var(--primary-color);
    font-size: 20px;
    transition: var(--transition);
}

.product-card:hover .product-icon {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.product-title {
    font-size: 15px; /* reduced for mobile */
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark-text);
}

.product-description {
    color: var(--light-gray);
    font-size: 13px; /* reduced for mobile */
    line-height: 1.6;
}

/* Mobile Navigation */
.mobile-nav-toggle {
    display: flex;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition);
}

.mobile-nav-toggle:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.mobile-nav {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    padding: 12px;
    z-index: 999;
    display: none;
    flex-direction: column;
    gap: 8px;
    width: 200px;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav a {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    text-decoration: none;
    color: var(--primary-color);
    border-radius: 6px;
    transition: background 0.3s;
    font-weight: 500;
    font-size: 14px; /* reduced for mobile */
}

.mobile-nav a:hover {
    background: rgba(0, 153, 153, 0.1);
}

.mobile-nav i {
    margin-right: 10px;
    width: 18px;
    text-align: center;
}

.brand-highlight {
    color: var(--primary-color);
    font-weight: bold;
}

/* Responsive Design */
@media (min-width: 768px) {
    .page-title {
        font-size: 30px;
    }
    
    .section-title h2 {
        font-size: 26px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mobile-nav-toggle {
        display: none;
    }

    .category-description {
        display: block;
        color: var(--light-gray);
        font-size: 14px;
        margin-top: 5px;
    }
}

@media (min-width: 992px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1200px) {
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}