/* Import Google Fonts: Outfit for English/Numbers, Kanit for Thai content */
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* CSS Custom Properties / Design System */
:root {
    --primary: hsl(208, 90%, 42%);        /* Nextech Blue */
    --primary-light: hsl(208, 90%, 55%);  /* Light Blue */
    --secondary: hsl(25, 95%, 50%);       /* Nextech Orange Accent */
    --secondary-hover: hsl(25, 95%, 45%);
    --dark: hsl(220, 25%, 12%);           /* Deep Slate Gray */
    --dark-muted: hsl(220, 15%, 25%);
    --light: hsl(210, 30%, 97%);          /* Soft BG Light */
    --white: hsl(0, 0%, 100%);
    --gray-light: hsl(210, 15%, 92%);
    --text-main: hsl(220, 20%, 20%);
    --text-muted: hsl(220, 12%, 45%);
    
    /* Font stacks */
    --font-primary: 'Outfit', 'Kanit', sans-serif;
    
    /* Layout properties */
    --header-height: 80px;
    --border-radius: 12px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.12);
}

/* CSS Reset & General Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-main);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography Utility Classes */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

.section-title {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 12px;
    position: relative;
    padding-bottom: 16px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 48px;
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    gap: 8px;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 82, 204, 0.2);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 105, 0, 0.2);
}

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

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

/* Header & Navigation Bar */
.header-wrapper {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-normal);
}

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

.logo img {
    height: 52px;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-item {
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 8px 0;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition-normal);
}

.nav-item:hover, .nav-item.active {
    color: var(--primary);
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--dark);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, hsl(210, 40%, 96%) 0%, hsl(200, 30%, 90%) 100%);
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background-color: hsla(208, 90%, 55%, 0.05);
    border-radius: 50%;
    filter: blur(80px);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.hero-content {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s forwards var(--transition-normal);
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--dark), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    opacity: 0;
    transform: scale(0.9);
    animation: scaleIn 0.8s forwards 0.2s;
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border: 6px solid var(--white);
    max-width: 100%;
}

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

.bg-light {
    background-color: var(--light);
}

/* Grid Layout for Solutions/Products */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

/* Card Styling */
.card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 36px 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--gray-light);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: hsla(208, 90%, 42%, 0.08);
    border-radius: 50%;
}

.card-title {
    font-size: 1.35rem;
    margin-bottom: 16px;
}

.card-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.card-link {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.card-link:hover {
    color: var(--primary-light);
}

/* Stat Counter / Experience Bar */
.experience-banner {
    background: linear-gradient(135deg, var(--dark) 0%, hsl(220, 25%, 8%) 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    position: relative;
}

.experience-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 40px;
}

.stat-item h3 {
    color: var(--secondary);
    font-size: 3.5rem;
    margin-bottom: 8px;
    font-weight: 800;
}

.stat-item p {
    font-size: 1.1rem;
    color: var(--gray-light);
    font-weight: 500;
}

/* Team Grid (ผังบริษัท) */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.team-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px 24px;
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 1px solid var(--gray-light);
    transition: var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 4px;
    box-shadow: var(--shadow-sm);
}

.team-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--white);
}

.team-name {
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.team-role {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.team-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Contact Us Grid & Form */
.contact-section-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

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

.contact-info-title {
    font-size: 2rem;
    margin-bottom: 16px;
}

.contact-info-desc {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.contact-detail-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary);
    width: 44px;
    height: 44px;
    background-color: hsla(208, 90%, 42%, 0.08);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-detail-content h4 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.contact-detail-content p, .contact-detail-content a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.contact-detail-content a:hover {
    color: var(--primary);
}

/* Form Styles */
.contact-form-container {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-light);
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dark-muted);
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    background-color: var(--light);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--white);
    box-shadow: 0 0 0 4px hsla(208, 90%, 42%, 0.1);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

/* Footer Section */
.footer {
    background-color: var(--dark);
    color: var(--gray-light);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo img {
    height: 52px;
    margin-bottom: 24px;
}

.footer-desc {
    color: hsl(220, 10%, 75%);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.footer-title {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 8px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: hsl(220, 10%, 75%);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 6px;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-btn {
    width: 40px;
    height: 40px;
    background-color: var(--dark-muted);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--white);
    transition: var(--transition-fast);
}

.social-btn:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.social-btn.line:hover {
    background-color: #06C755;
}

.social-btn.facebook:hover {
    background-color: #1877F2;
}

.footer-bottom {
    border-top: 1px solid var(--dark-muted);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.9rem;
    color: hsl(220, 10%, 60%);
}

/* Animations */
@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .contact-section-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none; /* Mobile menu collapsed by default */
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 24px;
        box-shadow: var(--shadow-md);
        gap: 16px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}