:root {
    --primary-color: #1e3a8a;
    /* Dark Blue */
    --primary-light: #3b82f6;
    --secondary-color: #86efac;
    /* Light Green */
    --secondary-dark: #22c55e;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f3f4f6;
    --white: #ffffff;
    --font-main: 'Sarabun', sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
    /* Prevent horizontal scroll from animations */
}

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

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

ul {
    list-style: none;
}


/* Buttons */

.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-dark);
    border-color: var(--secondary-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-white {
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--white);
}

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

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}


/* Header */

.header {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.nav {
    margin-left: auto;
    /* Push nav to the right */
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-list a {
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
    position: relative;
}

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

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

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

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}


/* Hero Section */

.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0fdf4 0%, #eff6ff 100%);
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background-color: #e2e8f0;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    border: 2px dashed #cbd5e1;
    transition: var(--transition);
}

.image-placeholder:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.image-placeholder.large {
    height: 500px;
}


/* Icons Section */

.icons-section {
    padding: 60px 0;
    background-color: var(--white);
}

.icons-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    text-align: center;
}

.icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.icon-item:hover .icon-circle {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(30, 58, 138, 0.3);
}

.icon-item p {
    font-weight: 600;
}


/* Modules Section */

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

.section-title {
    text-align: center;
    font-size: 2.25rem;
    color: var(--primary-color);
    margin: 0 auto 50px;
    /* Centering with margin auto */
    position: relative;
    /* Removed absolute positioning that caused issues */
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.module-card {
    background: var(--white);
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-top: 5px solid var(--secondary-color);
}

.module-card:hover {
    transform: translateY(-15px);
    /* Increased float distance */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    /* Stronger shadow */
}

.module-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e5e7eb;
}

.module-header i {
    font-size: 2rem;
    color: var(--primary-color);
}

.module-header h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
}

.module-list li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
}

.module-list li i {
    color: var(--secondary-dark);
    font-size: 0.875rem;
}


/* Features Split */

.features-split {
    padding: 100px 0;
}

.split-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.split-content h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.feature-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.step-icon {
    width: 40px;
    height: 40px;
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.step-text h4 {
    font-size: 1.125rem;
    margin-bottom: 5px;
}

.step-text p {
    color: var(--text-light);
}


/* Statistics Section (New) */

.stats-section {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 1.125rem;
    opacity: 0.9;
}


/* FAQ Section (New) */

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

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

.faq-item {
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 10px;
}

.faq-question {
    padding: 20px 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--primary-color);
}

.faq-question i {
    transition: var(--transition);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    color: var(--text-light);
}

.faq-answer p {
    padding-bottom: 20px;
}


/* CTA Banner (New) */

.cta-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--primary-color) 100%);
    text-align: center;
    color: var(--white);
}

.cta-banner h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-banner p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.9;
}


/* Contact Section */

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

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

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.contact-info p {
    margin-bottom: 30px;
    color: var(--text-light);
}

.contact-details li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.125rem;
    color: var(--text-color);
}

.contact-details li i {
    color: var(--primary-color);
    width: 25px;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-family: var(--font-main);
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-family: var(--font-main);
    transition: var(--transition);
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}


/* Footer */

.footer {
    background-color: #0f172a;
    color: #94a3b8;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
    border-bottom: 1px solid #1e293b;
    padding-bottom: 40px;
}

.footer-col h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.125rem;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--secondary-color);
}

.footer-col ul li i {
    margin-right: 10px;
    width: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    font-size: 0.875rem;
}


/* Responsive */

@media (max-width: 992px) {
    .hero-container,
    .split-container,
    .contact-wrapper {
        flex-direction: column;
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-container {
        flex-direction: column;
    }
    .hero-content {
        align-items: center;
        display: flex;
        flex-direction: column;
    }
    .modules-grid {
        grid-template-columns: 1fr;
    }
    .icons-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    /* Mobile Menu Dropdown Style */
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        display: none;
        /* Hidden by default */
        padding: 20px 0;
        border-top: 1px solid #f3f4f6;
    }
    .nav.active {
        display: block;
        animation: slideDown 0.3s ease forwards;
    }
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .nav-list {
        flex-direction: column;
        gap: 0;
        text-align: center;
    }
    .nav-list li {
        width: 100%;
    }
    .nav-list a {
        display: block;
        padding: 15px;
        width: 100%;
    }
    .nav-list a:hover {
        background-color: #f8fafc;
    }
    .mobile-menu-toggle {
        display: block;
    }
    /* Fix Image Placeholder on Mobile */
    .image-placeholder {
        height: 250px;
        /* Smaller height for mobile */
    }
    .image-placeholder.large {
        height: 300px;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .icons-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .footer-social {
        justify-content: center;
    }
}


/* Images */

.hero-img,
.feature-img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.hero-img:hover,
.feature-img:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}