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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Kanit', 'Noto Sans Thai', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Color Variables - Random Theme: Blue and Orange */
:root {
    --primary-color: #2563eb;
    --secondary-color: #ea580c;
    --accent-color: #f97316;
    --light-bg: #f1f5f9;
    --white: #ffffff;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-dark);
}

.logo-img {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-list li {
    margin-left: 30px;
}

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

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary-color);
}

.nav-list a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-list a:hover::after,
.nav-list a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    padding: 120px 0 80px;
    margin-top: 70px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--white);
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-image {
    text-align: center;
}

.hero-img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    color: var(--text-dark);
    margin-bottom: 10px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Company Intro */
.company-intro {
    padding: 80px 0;
    background-color: var(--white);
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.intro-item {
    text-align: center;
    padding: 30px;
    border-radius: 15px;
    background-color: var(--light-bg);
    transition: transform 0.3s ease;
}

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

.intro-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 50%;
    object-fit: cover;
}

.intro-item h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
}

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

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.product-card {
    background-color: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    color: var(--text-dark);
    margin-bottom: 10px;
}

.product-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.product-link:hover {
    color: var(--accent-color);
}

/* News Section */
.news-section {
    padding: 80px 0;
    background-color: var(--white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background-color: var(--light-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

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

.news-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 25px;
}

.news-content h3 {
    color: var(--text-dark);
    margin-bottom: 10px;
}

.news-date {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Products Page */
.products-page {
    padding: 120px 0 80px;
    margin-top: 70px;
}

.filter-section {
    margin-bottom: 40px;
    text-align: center;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border-color);
    background-color: var(--white);
    color: var(--text-light);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-item {
    background-color: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-item:hover .product-overlay {
    opacity: 1;
}

.view-details {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 20px;
    border: 2px solid var(--white);
    border-radius: 25px;
    transition: all 0.3s ease;
}

.view-details:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.product-details {
    padding: 25px;
}

.product-details h3 {
    color: var(--text-dark);
    margin-bottom: 10px;
}

.product-price {
    color: var(--secondary-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.product-description {
    color: var(--text-light);
    margin-bottom: 15px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.feature {
    background-color: var(--light-bg);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* About Page */
.about-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    padding: 120px 0 80px;
    margin-top: 70px;
    text-align: center;
}

.about-hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.about-hero-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
}

.company-history {
    padding: 80px 0;
    background-color: var(--white);
}

.history-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.history-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.history-text h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
}

.history-text p {
    margin-bottom: 20px;
}

.mission-vision {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.mv-item {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.mv-item:hover {
    transform: translateY(-5px);
}

.mv-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 50%;
    object-fit: cover;
}

.mv-item h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
}

.team-section {
    padding: 80px 0;
    background-color: var(--white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.team-member {
    background-color: var(--light-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.team-member img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.team-info {
    padding: 25px;
}

.team-info h3 {
    color: var(--text-dark);
    margin-bottom: 5px;
}

.team-position {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 15px;
}

.team-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.achievements {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.achievement-item {
    text-align: center;
    padding: 30px;
    background-color: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.achievement-item:hover {
    transform: translateY(-5px);
}

.achievement-item img {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    border-radius: 50%;
    object-fit: cover;
}

.achievement-item h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
}

/* Contact Page */
.contact-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    padding: 120px 0 80px;
    margin-top: 70px;
    text-align: center;
}

.contact-hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.contact-hero-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
}

.contact-section {
    padding: 80px 0;
    background-color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-form-container h2,
.contact-info h2 {
    color: var(--text-dark);
    margin-bottom: 30px;
}

.contact-form {
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item img {
    width: 40px;
    height: 40px;
    margin-right: 20px;
    border-radius: 50%;
    object-fit: cover;
}

.info-content h3 {
    color: var(--text-dark);
    margin-bottom: 8px;
}

.info-content p {
    color: var(--text-light);
    line-height: 1.6;
}

.map-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.map-container {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.map-placeholder {
    position: relative;
    height: 400px;
}

.map-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 40px 30px;
    color: var(--white);
}

.map-overlay h3 {
    margin-bottom: 10px;
    color: var(--white);
}

.map-overlay p {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.faq-section {
    padding: 80px 0;
    background-color: var(--white);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.faq-item {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.faq-item h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    color: var(--white);
    text-decoration: none;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container,
    .history-content,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .nav-list {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-img {
        max-width: 300px;
    }

    .intro-grid,
    .products-grid,
    .mv-grid,
    .news-grid,
    .team-grid,
    .achievements-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .contact-form,
    .contact-info {
        padding: 30px 20px;
    }

    .info-item {
        flex-direction: column;
        text-align: center;
    }

    .info-item img {
        margin-right: 0;
        margin-bottom: 15px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

    .hero {
        padding: 100px 0 60px;
    }

    .section-header {
        margin-bottom: 30px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }

    .filter-btn {
        width: 100%;
        max-width: 200px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .social-links {
        justify-content: center;
    }
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu.active .nav-list {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 20px;
    }

    .nav-menu.active .nav-list li {
        margin: 10px 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }