:root {
    --primary-color: #f77f00; /* Orange CTA */
    --secondary-color: #003049; /* Dark Blue for contrast */
    --accent-color: #219ebc; /* Bright Blue */
    --bg-light: #f8f9fa; /* Clean Web Background */
    --bg-white: #ffffff;
    --text-dark: #333333;
    --text-gray: #6c757d;
    --border-gray: #dee2e6;
    --line-color: #00B900; /* Line Green */
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--secondary-color);
}

.bg-white { background-color: var(--bg-white) !important; }
.bg-light { background-color: var(--bg-light) !important; }
.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }

/* Buttons */
.btn-cta {
    background-color: var(--primary-color);
    color: #fff;
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 6px rgba(247, 127, 0, 0.3);
}

.btn-cta:hover {
    background-color: #d66a00;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(247, 127, 0, 0.4);
}

.btn-line {
    background-color: var(--line-color);
    color: #fff;
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 6px rgba(0, 185, 0, 0.3);
}

.btn-line:hover {
    background-color: #009900;
    color: #fff;
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, #ffffff 0%, #eef2f3 100%);
    overflow: hidden;
}

.hero-content {
    z-index: 2;
    position: relative;
}

.hero-slider img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Sections */
.section-padding {
    padding: 80px 0;
}

.card-service {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
    border: 1px solid var(--border-gray);
    height: 100%;
}

.card-service:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: var(--accent-color);
}

.icon-box {
    width: 60px;
    height: 60px;
    background-color: rgba(33, 158, 188, 0.1);
    color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

/* Floating Contact */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.floating-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: 0.3s;
    text-decoration: none;
}

.floating-line { background-color: var(--line-color); }
.floating-phone { background-color: var(--primary-color); }

.floating-btn:hover {
    transform: scale(1.1);
    color: #fff;
}

/* Footer & SEO Links */
.footer-seo {
    background-color: var(--secondary-color);
    color: #fff;
    padding: 60px 0 30px;
}

.footer-seo h5 {
    color: #fff;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
    display: inline-block;
}

.seo-link-list {
    list-style: none;
    padding: 0;
    margin: 0;
    column-count: 2;
}

@media (min-width: 768px) {
    .seo-link-list { column-count: 4; }
}

.seo-link-list li {
    margin-bottom: 8px;
}

.seo-link-list a {
    color: #a3a8cc;
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.2s;
}

.seo-link-list a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}