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

html {
    scroll-behavior: smooth;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #1d4ed8;
}

img {
    max-width: 100%;
    height: auto;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: #2563eb;
    padding: 12px 30px;
    border: 2px solid #2563eb;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
}

.btn-link {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.btn-link:hover {
    color: #1d4ed8;
}

/* Header and Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar {
    padding: 1rem 0;
}

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

.logo h1 {
    color: #2563eb;
    font-size: 2rem;
    font-weight: 700;
}

.logo a {
    color: inherit;
    text-decoration: none;
}

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

.nav-menu a {
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #2563eb;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: #2563eb;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="0,0 1000,0 1000,60 0,100"/></svg>') no-repeat center bottom;
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-image {
    margin-top: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image img {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Page Hero */
.page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    margin-top: 80px;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Company Introduction */
.company-intro {
    padding: 80px 0;
    background: white;
}

.intro-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.intro-content h2 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 2rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-weight: 500;
}

/* Core Products */
.core-products {
    padding: 80px 0;
    background: #f8f9fa;
}

.core-products h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 3rem;
}

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

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    height: 200px;
    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-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #ff6b35;
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

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

.news-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 3rem;
}

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

.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.news-image {
    height: 200px;
    overflow: hidden;
}

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

.news-content {
    padding: 1.5rem;
}

.news-content h3 {
    color: #2563eb;
    margin-bottom: 1rem;
}

.news-date {
    color: #666;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-section h4 {
    color: #2563eb;
    margin-bottom: 1rem;
}

.footer-section p {
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #d1d5db;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: #d1d5db;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
}

/* Product Filters */
.product-filters {
    padding: 40px 0;
    background: white;
    border-bottom: 1px solid #e5e7eb;
}

.filter-controls {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 600;
    color: #374151;
}

.filter-group select,
.search-box input {
    padding: 0.5rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.filter-group select:focus,
.search-box input:focus {
    outline: none;
    border-color: #2563eb;
}

.search-box {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.search-box input {
    flex: 1;
    min-width: 200px;
}

#search-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
}

#search-btn:hover {
    background: #1d4ed8;
}

/* Products Section */
.products-section {
    padding: 60px 0;
    background: #f8f9fa;
}

.product-specs {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.product-specs span {
    background: #e0f2fe;
    color: #0369a1;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.load-more {
    text-align: center;
    margin-top: 3rem;
}

/* About Page Styles */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #2563eb;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
}

.timeline-date {
    background: #2563eb;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    width: 45%;
    margin-top: 3rem;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 3rem;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 3rem;
}

.timeline-content img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    margin-top: 1rem;
}

/* Vision & Mission */
.vision-mission {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.vision-card,
.mission-card,
.values-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.card-icon {
    font-size: 3rem;
    color: #2563eb;
    margin-bottom: 1rem;
}

.values-card ul {
    list-style: none;
    text-align: left;
    margin-top: 1rem;
}

.values-card li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}

.values-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2563eb;
}

/* Team Section */
.team-section {
    padding: 80px 0;
    background: white;
}

.team-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 3rem;
}

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

.team-member {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

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

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

.member-info {
    padding: 1.5rem;
    text-align: center;
}

.member-info h3 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.member-position {
    color: #666;
    font-weight: 500;
    margin-bottom: 1rem;
}

.member-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.member-social a {
    color: #666;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.member-social a:hover {
    color: #2563eb;
}

/* Achievements */
.achievements {
    padding: 80px 0;
    background: #f8f9fa;
}

.achievements h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 3rem;
}

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

.achievement-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.achievement-card:hover {
    transform: transform 0.3s ease;
}

.achievement-icon {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 1rem;
}

.achievement-year {
    color: #666;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-form h2,
.contact-info h2 {
    color: #2563eb;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    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: #2563eb;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkbox-group label {
    margin: 0;
    font-weight: normal;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
}

.form-message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.form-message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-icon {
    color: #2563eb;
    font-size: 1.5rem;
    min-width: 30px;
}

.info-content h3 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.map-container {
    margin: 2rem 0;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.social-media {
    margin-top: 2rem;
}

.social-media h3 {
    color: #2563eb;
    margin-bottom: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    text-decoration: none;
    color: #374151;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    border-color: #2563eb;
    color: #2563eb;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.faq-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 3rem;
}

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

.faq-item {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
    color: #2563eb;
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s ease;
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        flex-direction: column;
        align-items: stretch;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        justify-content: flex-start !important;
    }

    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
        margin-right: 0 !important;
    }

    .vision-mission-content {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }

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

    .info-item {
        flex-direction: column;
        gap: 0.5rem;
    }
}

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

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

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

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

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.animate {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.animate {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.animate {
    opacity: 1;
    transform: translateX(0);
}