/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --dark-green: #1f3628;
    --light-green: #8dab99;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --gray: #6c757d;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Noto Sans Thai', sans-serif;
    line-height: 1.6;
    color: var(--dark-green);
    background-color: var(--white);
}

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

/* Header */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-green);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-green);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--light-green);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--dark-green);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--light-green);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--dark-green);
    border: 2px solid var(--dark-green);
}

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

.btn-social {
    background-color: var(--light-green);
    color: var(--white);
    margin-top: 1rem;
}

.btn-social:hover {
    background-color: var(--dark-green);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--white) 0%, #f0f4f0 50%, var(--light-green) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(141, 171, 153, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(31, 54, 40, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(141, 171, 153, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shimmer 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0%, 100% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(100%);
    }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--dark-green);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(31, 54, 40, 0.1);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--dark-green);
    margin-bottom: 1rem;
    font-weight: 600;
    background: linear-gradient(45deg, var(--dark-green), var(--light-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--dark-green);
    margin-bottom: 2rem;
    line-height: 1.8;
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.hero-buttons .btn {
    box-shadow: 0 4px 15px rgba(31, 54, 40, 0.2);
    transition: all 0.3s ease;
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(31, 54, 40, 0.3);
}

.hero-img {
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    /* box-shadow: 0 10px 30px rgba(31, 54, 40, 0.2);
    border: 3px solid var(--white); */
    position: relative;
    z-index: 2;
}

.hero-img::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(45deg, var(--light-green), var(--dark-green));
    border-radius: 25px;
    z-index: -1;
    opacity: 0.3;
}

/* Section Titles */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-green);
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--light-green);
    border-radius: 2px;
}

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

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.product-image {
    height: 250px;
    overflow: hidden;
}

.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: 1.5rem;
}

.product-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark-green);
    margin-bottom: 0.5rem;
}

.product-info p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-green);
}

.original-price {
    font-size: 1.1rem;
    color: var(--gray);
    text-decoration: line-through;
}

/* Reviews Section */
.reviews {
    padding: 80px 0;
    background-color: var(--white);
}

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

.review-card {
    background-color: var(--light-gray);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.review-stars {
    color: #ffc107;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.review-text {
    font-style: italic;
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.review-author strong {
    color: var(--dark-green);
    display: block;
    margin-bottom: 0.25rem;
}

.review-author span {
    color: var(--light-green);
    font-size: 0.9rem;
}

/* Promotions Section */
.promotions {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.promotions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.promotion-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.promotion-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--dark-green);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.promotion-card h3 {
    font-size: 1.5rem;
    color: var(--dark-green);
    margin-bottom: 1rem;
}

.promotion-card p {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.promotion-price {
    margin-bottom: 1.5rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--white);
}

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

.contact-card {
    background-color: var(--light-gray);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 3rem;
    color: var(--dark-green);
    margin-bottom: 1rem;
}

.contact-card h3 {
    font-size: 1.3rem;
    color: var(--dark-green);
    margin-bottom: 0.5rem;
}

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

/* Standards Section */
.standards {
    padding: 80px 0;
    background-color: var(--light-gray);
}

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

.standard-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.standard-card:hover {
    transform: translateY(-5px);
}

.standard-icon {
    font-size: 3rem;
    color: var(--light-green);
    margin-bottom: 1rem;
}

.standard-card h3 {
    font-size: 1.2rem;
    color: var(--dark-green);
    margin-bottom: 1rem;
}

.standard-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Credibility Section */
.credibility {
    padding: 80px 0;
    background-color: var(--white);
}

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

.credibility-card {
    background-color: var(--light-gray);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.credibility-icon {
    font-size: 3rem;
    color: var(--dark-green);
    margin-bottom: 1rem;
}

.credibility-card h3 {
    font-size: 1.3rem;
    color: var(--dark-green);
    margin-bottom: 1rem;
}

.credibility-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--white);
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: var(--light-gray);
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--dark-green);
    font-weight: 600;
}

.faq-question i {
    color: var(--light-green);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 200px;
}

.faq-answer p {
    color: var(--gray);
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: var(--dark-green);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--light-green);
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: var(--light-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.footer-social a:hover {
    background-color: var(--white);
    color: var(--dark-green);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--light-green);
    color: var(--light-green);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-img {
        max-width: 350px;
        margin: 0 auto;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .products-grid,
    .reviews-grid,
    .promotions-grid,
    .contact-grid,
    .standards-grid,
    .credibility-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .nav-container {
        padding: 1rem 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .hero-img {
        max-width: 280px;
    }
    
    .product-card,
    .review-card,
    .promotion-card,
    .contact-card,
    .standard-card,
    .credibility-card {
        margin: 0 10px;
    }
}

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

/* Loading animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-card,
.review-card,
.promotion-card,
.contact-card,
.standard-card,
.credibility-card {
    animation: fadeInUp 0.6s ease-out;
}