:root {
    --primary-color: #65a30d; /* Olive Green */
    --primary-dark: #3f6212;
    --bg-color: #ffffff;
    --text-color: #334155;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --font-main: 'Outfit', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header */
header {
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.tab-btn {
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s;
    font-family: var(--font-main);
}

.tab-btn:hover, .tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1.1rem; /* Align with header border */
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px 3px 0 0;
}

/* Main Content Area */
main {
    min-height: 80vh;
    padding: 2rem 0;
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
    padding: 0 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hero Section (Home Tab) */
.hero-banner {
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?q=80&w=2041&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 6rem 2rem;
    border-radius: 20px;
    text-align: center;
    margin-bottom: 3rem;
}

.hero-banner h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-banner p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    color: #f1f5f9;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border-color: var(--primary-color);
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

/* Products Tab */
.product-section {
    display: flex;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.product-section:nth-child(even) {
    flex-direction: row-reverse;
}

.product-img {
    flex: 1;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.product-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
}

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

.product-info {
    flex: 1;
}

.product-info h2 {
    font-size: 2.5rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.specs-list {
    list-style: none;
    margin-top: 1.5rem;
}

.specs-list li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.specs-list li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
}

/* Quality Tab */
.quality-wrapper {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cert-badge {
    display: inline-block;
    background: #f0fdf4;
    color: var(--primary-dark);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid var(--primary-color);
}

/* Contact Tab */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background: #f8fafc;
    padding: 3rem;
    border-radius: 20px;
}

.contact-info h3 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-main);
}

.submit-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: var(--primary-dark);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .tabs-nav {
        display: none; /* Mobile menu would go here */
    }
    .product-section {
        flex-direction: column;
    }
    .product-section:nth-child(even) {
        flex-direction: column;
    }
    .contact-container {
        grid-template-columns: 1fr;
    }
}