:root {
    --color-bg: #fffbf5;
    --color-white: #ffffff;
    --color-black: #1d1d1f;
    --color-gray: #86868b;
    --color-light-gray: #f5f5f7;
    --color-accent: #25d366;
}

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

body {
    font-family: 'IBM Plex Sans Thai', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 251, 245, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 48px;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 40px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-black);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--color-black);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: color 0.3s ease;
    opacity: 0.8;
}

.nav-menu a:hover {
    opacity: 1;
    color: var(--color-accent);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-white);
    min-width: 220px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    padding: 12px 0;
    margin-top: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.dropdown.active .dropdown-content {
    display: block;
    opacity: 1;
}

.dropdown-content a {
    display: block;
    padding: 12px 24px;
    color: var(--color-black);
    font-size: 13px;
    opacity: 1;
}

.dropdown-content a:hover {
    background-color: var(--color-light-gray);
}

/* EGW Button */
.egw-btn {
    background-color: var(--color-white);
    color: var(--color-black);
    padding: 8px 20px;
    border-radius: 24px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

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

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 22px;
    height: 2px;
    background-color: var(--color-black);
    transition: all 0.3s ease;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 48px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    max-height: calc(100vh - 48px);
    overflow-y: auto;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    list-style: none;
}

.mobile-menu li {
    border-bottom: 1px solid var(--color-light-gray);
}

.mobile-menu a {
    display: block;
    padding: 15px 10px;
    color: var(--color-black);
    text-decoration: none;
    font-size: 16px;
}

.mobile-dropdown-content {
    display: none;
    padding-left: 20px;
}

.mobile-dropdown-content.active {
    display: block;
}

.mobile-dropdown-content a {
    font-size: 14px;
    color: var(--color-gray);
}

/* Hero Section */
.hero {
    margin-top: 48px;
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, #fff 100%);
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
    line-height: 1.1;
}

.hero p {
    font-size: 24px;
    color: var(--color-gray);
    margin-bottom: 40px;
    font-weight: 300;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 14px 32px;
    border-radius: 24px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #000000;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    padding: 14px 32px;
    border-radius: 24px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    border: 1px solid var(--color-accent);
    transition: all 0.3s ease;
}

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

/* Services Section */
.services {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 20px;
}

.section-title {
    text-align: center;
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 60px;
    letter-spacing: -1px;
}

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

.service-card {
    background-color: var(--color-white);
    border-radius: 18px;
    padding: 40px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 28px;
}

.service-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.service-card p {
    color: var(--color-gray);
    font-size: 16px;
    line-height: 1.6;
}

/* Plans Section */
.plans {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 20px;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.plan-card {
    background-color: var(--color-white);
    border-radius: 18px;
    padding: 40px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.plan-card.featured {
    border: 2px solid var(--color-accent);
}

.plan-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.plan-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-light-gray);
}

.plan-header h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 5px;
}

.plan-price .currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-gray);
}

.plan-price .amount {
    font-size: 56px;
    font-weight: 700;
    color: var(--color-black);
}

.plan-price .period {
    font-size: 18px;
    color: var(--color-gray);
}

.plan-features {
    list-style: none;
    margin-bottom: 30px;
}

.plan-features li {
    padding: 12px 0;
    font-size: 16px;
    color: var(--color-black);
    border-bottom: 1px solid var(--color-light-gray);
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-btn {
    display: block;
    width: 100%;
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 14px 32px;
    border-radius: 24px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
}

.plan-btn:hover {
    background-color: #000000;
    transform: translateY(-2px);
}

/* EGW Section */
.egw-section {
    background-color: var(--color-white);
    padding: 100px 20px;
    margin: 80px 0;
}

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

.egw-content {
    max-width: 1000px;
    margin: 0 auto;
}

.egw-description h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.egw-description>p {
    font-size: 18px;
    color: var(--color-gray);
    line-height: 1.8;
    text-align: center;
    margin-bottom: 50px;
}

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

.egw-feature-item {
    display: flex;
    gap: 20px;
    padding: 30px;
    background-color: var(--color-light-gray);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.egw-feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.egw-feature-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.egw-feature-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.egw-feature-item p {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.6;
}

/* Reviews Section */
.reviews {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 20px;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.review-card {
    background-color: var(--color-white);
    border-radius: 18px;
    padding: 40px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.review-stars {
    font-size: 20px;
    margin-bottom: 20px;
}

.review-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-black);
    margin-bottom: 24px;
}

.review-author {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.review-author strong {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-black);
}

.review-author span {
    font-size: 14px;
    color: var(--color-gray);
}

/* About Section */
.about {
    background-color: var(--color-white);
    padding: 100px 20px;
    margin: 80px 0;
}

.about-container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.about h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 30px;
    letter-spacing: -1px;
}

.about p {
    font-size: 20px;
    color: var(--color-gray);
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

/* Contact Section */
.contact {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 20px;
}

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 60px;
    margin-top: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background-color: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.contact-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-item p {
    font-size: 15px;
    color: var(--color-gray);
    line-height: 1.6;
}

.contact-form {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: 18px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--color-light-gray);
    padding: 60px 20px 30px;
    margin-top: 80px;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.footer-section a {
    color: var(--color-gray);
    text-decoration: none;
    font-size: 14px;
    display: block;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--color-black);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--color-gray);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {

    .nav-menu,
    .egw-btn {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .section-title {
        font-size: 32px;
    }

    .about h2 {
        font-size: 32px;
    }

    .about p {
        font-size: 16px;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

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

    .egw-features {
        grid-template-columns: 1fr;
    }

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