/* Base Styles */
:root {
    --primary-green: #2e7d32;
    --secondary-green: #388e3c;
    --light-green: #81c784;
    --dark-green: #1b5e20;
    --earth-brown: #5d4037;
    --light-brown: #d7ccc8;
    --beige: #f5f5f5;
    --white: #ffffff;
    --light-gray: #f0f0f0;
    --dark-gray: #424242;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--beige);
    color: var(--dark-gray);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header & Navigation */
header {
    background-color: var(--primary-green);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    color: var(--light-green);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(46, 125, 50, 0.85), rgba(27, 94, 32, 0.9)), url('https://images.unsplash.com/photo-1611080626721-0d36c2d8c1c5?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-align: center;
    padding: 5rem 1rem;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    background-color: var(--earth-brown);
    color: var(--white);
    padding: 0.8rem 1.8rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--earth-brown);
    cursor: pointer;
}

.btn:hover {
    background-color: transparent;
    color: var(--earth-brown);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    background-color: transparent;
    color: var(--earth-brown);
    margin-left: 0rem;
}

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

/* Section Styling */
section {
    padding: 3rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--dark-green);
    font-size: 2rem;
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--light-green);
    margin: 0.5rem auto;
    border-radius: 2px;
}

/* Featured Products */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

.product-img {
    height: 400px;
    width: 100%;
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-green);
}

.product-price {
    display: flex;
    justify-content: space-between;
    margin: 0.8rem 0;
    font-weight: 600;
}

.price-usd {
    color: var(--primary-green);
}

.price-coins {
    color: #ff9800;
}

.product-actions {
    display: flex;
    gap: 0.8rem;
    margin-top: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border-radius: 4px;
}

/* Forms */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-green);
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--light-green);
    box-shadow: 0 0 0 3px rgba(129, 199, 132, 0.3);
}

.captcha-container {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    text-align: center;
}

.captcha-challenge {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.captcha-img {
    width: 80px;
    height: 80px;
    background: var(--white);
    border: 1px solid #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
}

.captcha-img.selected {
    border-color: var(--primary-green);
    background-color: rgba(46, 125, 50, 0.1);
}

.exchange-rates {
    background: rgba(46, 125, 50, 0.1);
    padding: 1.2rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.exchange-rates ul {
    list-style: none;
    padding-left: 1rem;
}

.exchange-rates li {
    margin: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.exchange-rates i {
    color: var(--primary-green);
}

/* Filters */
.filters {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.filter-group {
    margin-bottom: 1rem;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-title {
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--dark-green);
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.price-range {
    width: 100%;
    margin-top: 0.5rem;
}

/* Articles Section */
.articles {
    padding: 3rem 0;
    background-color: var(--white);
}

.article-card {
    background: var(--beige);
    padding: 1.8rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.article-card h3 {
    color: var(--dark-green);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.article-card p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.article-card ul {
    margin: 1rem 0;
    padding-left: 1.8rem;
}

.article-card li {
    margin-bottom: 0.6rem;
}

/* Footer */
footer {
    background: var(--earth-brown);
    color: var(--white);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h3 {
    margin-bottom: 1.2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-column h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--light-green);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--light-brown);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--light-green);
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--light-brown);
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: #43a047;
}

.notification.error {
    background: #e53935;
}

.notification.info {
    background: #1e88e5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .mobile-menu-btn {
        display: block;
        position: absolute;
        top: 15px;
        right: 15px;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        margin-top: 1rem;
    }

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

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }

    .btn-outline {
        margin-left: 0;
    }

    .product-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 3rem 1rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.6rem;
    }
}