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

body {
    font-family: 'Kanit', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Navigation Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 25, 45, 0.95);
    backdrop-filter: blur(10px);
    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 h2 {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: -5px;
}

.nav-logo span {
    color: #ffd700;
    font-size: 0.9rem;
    font-weight: 300;
}

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

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #ffd700;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #ffd700, #ffed4e);
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 3px 0;
    transition: 0.3s;
}

/* Breadcrumb */
.breadcrumb {
    padding: 100px 0 20px;
    background: #f8fafc;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.breadcrumb-nav a {
    color: #64748b;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-nav a:hover {
    color: #ffd700;
}

.separator {
    color: #64748b;
}

.current {
    color: #0f192d;
    font-weight: 500;
}

/* Page Header */
.page-header {
    padding: 40px 0;
    background: linear-gradient(135deg, #0f192d 0%, #1a2a4a 100%);
    color: #fff;
    text-align: center;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.2rem;
    color: #b8c5d1;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0f192d;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* Company History Section */
.company-history {
    padding: 100px 0;
    background: #f8fafc;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #ffd700, #ffed4e);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #0f192d;
    padding: 15px 25px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    min-width: 100px;
    text-align: center;
    position: relative;
    z-index: 2;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.timeline-content {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 0 2rem;
    flex: 1;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 0;
    height: 0;
    border: 15px solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -30px;
    border-left-color: #fff;
    transform: translateY(-50%);
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -30px;
    border-right-color: #fff;
    transform: translateY(-50%);
}

.timeline-content h3 {
    color: #0f192d;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: #64748b;
    line-height: 1.6;
}

/* Vision & Mission Section */
.vision-mission {
    padding: 100px 0;
    background: linear-gradient(135deg, #0f192d 0%, #1a2a4a 100%);
    color: #fff;
}

.vision-mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
}

.vision-card,
.mission-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: all 0.3s ease;
}

.vision-card:hover,
.mission-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.card-icon i {
    font-size: 2rem;
    color: #0f192d;
}

.vision-card h3,
.mission-card h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #fff;
}

.vision-card p,
.mission-card p {
    color: #b8c5d1;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* Core Values Section */
.core-values {
    padding: 100px 0;
    background: #f8fafc;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.value-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.value-icon i {
    font-size: 2rem;
    color: #0f192d;
}

.value-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #0f192d;
    margin-bottom: 1rem;
}

.value-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Certifications Section */
.certifications {
    padding: 100px 0;
    background: linear-gradient(135deg, #0f192d 0%, #1a2a4a 100%);
    color: #fff;
}

.certifications .section-title,
.certifications .section-subtitle {
    color: #fff;
}

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

.cert-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: all 0.3s ease;
}

.cert-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.cert-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.cert-icon i {
    font-size: 1.5rem;
    color: #0f192d;
}

.cert-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #fff;
}

.cert-card p {
    color: #b8c5d1;
    font-size: 0.9rem;
}

/* Partners Section */
.partners {
    padding: 100px 0;
    background: #f8fafc;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
}

.partner-category {
    background: #fff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.partner-category h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0f192d;
    margin-bottom: 2rem;
    text-align: center;
}

.partner-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.partner-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.partner-logo:hover {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #0f192d;
    transform: translateY(-2px);
}

.partner-logo i {
    font-size: 1.5rem;
    color: #ffd700;
}

.partner-logo:hover i {
    color: #0f192d;
}

.partner-logo span {
    font-weight: 500;
}

/* Sub-pages Section */
.sub-pages {
    padding: 100px 0;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #0f192d;
}

.sub-pages .section-title,
.sub-pages .section-subtitle {
    color: #0f192d;
}

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

.sub-page-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.sub-page-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.sub-page-card .card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #0f192d, #1a2a4a);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.sub-page-card .card-icon i {
    font-size: 2rem;
    color: #fff;
}

.sub-page-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #0f192d;
}

.sub-page-card p {
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #0f192d, #1a2a4a);
    color: #fff;
    box-shadow: 0 4px 15px rgba(15, 25, 45, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 25, 45, 0.4);
}

/* Footer */
.footer {
    background: #0f192d;
    color: #fff;
    padding: 60px 0 20px;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ffd700;
}

.footer-section p {
    color: #b8c5d1;
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    color: #b8c5d1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffd700;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.contact-info i {
    color: #ffd700;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid #1a2a4a;
    padding-top: 2rem;
    text-align: center;
    color: #b8c5d1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(15, 25, 45, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 60px;
    }
    
    .timeline-year {
        position: absolute;
        left: 0;
        top: 0;
        min-width: 60px;
        padding: 10px 15px;
    }
    
    .timeline-content {
        margin: 0;
        margin-top: 1rem;
    }
    
    .timeline-content::before {
        display: none;
    }
    
    .vision-mission-grid,
    .partners-grid,
    .sub-pages-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid,
    .certifications-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .timeline-content,
    .vision-card,
    .mission-card,
    .value-card,
    .cert-card,
    .partner-category,
    .sub-page-card {
        padding: 1.5rem;
    }
}