/* Base Styles */
:root {
    --primary-color: #5f27cd;
    --secondary-color: #ff6b81;
    --accent-color: #feca57;
    --bg-color: #f9f9f9;
    --text-color: #333333;
    --light-gray: #c8d6e5;
    --dark-gray: #576574;
    --white: #ffffff;
}

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

body {
    font-family: 'Prompt', 'Sarabun', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
}

h3 {
    font-size: 1.5rem;
    color: var(--dark-gray);
}

p {
    margin-bottom: 15px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

.button {
    display: inline-block;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(95, 39, 205, 0.3);
    transition: all 0.3s ease;
}

.button:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(95, 39, 205, 0.5);
    color: var(--white);
}

section {
    padding: 80px 0;
}

/* Header Styles */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-svg {
    width: 180px;
    height: 50px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    font-weight: 500;
    font-size: 17px;
    position: relative;
}

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

nav ul li a:hover:after {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    text-align: center;
    padding: 100px 0;
    border-radius: 0 0 50% 50% / 100px;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 25px;
    font-size: 2.8rem;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
}

/* Features Section */
.features {
    background-color: var(--white);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 15px;
    background-color: var(--bg-color);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-icon {
    margin-bottom: 20px;
}

/* How it Works Section */
.how-it-works {
    background-color: #f0f2f5;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.step {
    text-align: center;
    padding: 40px 20px;
    border-radius: 15px;
    background-color: var(--white);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.step-number {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.cta-button.center {
    text-align: center;
}

/* FAQ Section */
.faq {
    background-color: var(--white);
}

.faq-item {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 25px 30px;
    margin-bottom: 20px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

/* Footer */
footer {
    background-color: #2b2d42;
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-logo {
    margin-bottom: 30px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
}

.footer-column h4 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

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

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

.footer-column ul li a {
    color: var(--light-gray);
    transition: color 0.3s ease;
}

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

.keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.keywords li {
    color: var(--light-gray);
    font-size: 0.9rem;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--light-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.7rem;
    }
    
    .hero {
        padding: 70px 0;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
    
    header .container {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 15px;
    }
    
    nav ul li {
        margin-left: 15px;
        margin-right: 15px;
    }
}

@media (max-width: 576px) {
    section {
        padding: 60px 0;
    }
    
    .feature-grid, .steps {
        grid-template-columns: 1fr;
    }
    
    .button {
        padding: 10px 25px;
        font-size: 16px;
    }
}

/* Add Thai font */
@font-face {
    font-family: 'Prompt';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(https://fonts.gstatic.com/s/prompt/v10/-W__XJnvUD7dzB2KdNodVkI.woff2) format('woff2');
    unicode-range: U+0E01-0E5B, U+200C-200D, U+25CC;
}

@font-face {
    font-family: 'Sarabun';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(https://fonts.gstatic.com/s/sarabun/v13/DtVjJx26TKEr37c9aAFJn2QN.woff2) format('woff2');
    unicode-range: U+0E01-0E5B, U+200C-200D, U+25CC;
}