:root {
    /* Color Palette */
    --primary-yellow: #FFC900;
    --secondary-yellow: #FFD400;
    --text-primary: #000000;
    --text-secondary: #01000A;
    --bg-white: #FFFFFF;
    --bg-light-grey: #D9D9D9;
    
    /* Typography */
    --font-anuphan: 'Anuphan', sans-serif;

    /* Spacing */
    --container-max-width: 1440px;
    --section-padding: clamp(3rem, 5vw, 5rem) 0; /* 48px to 80px */
    --card-radius: 20px;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    max-width: 100%;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 120px; /* Offset for fixed header */
}

body {
    font-family: var(--font-anuphan);
    background-color: var(--bg-white);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: clamp(0.875rem, 0.8rem + 0.25vw, 1rem); /* 14px to 16px */
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 clamp(1rem, 2.5vw, 1.5rem); /* 16px to 24px */
}

/* Common Components */
.btn-primary {
    background: var(--primary-yellow);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--card-radius);
    font-family: var(--font-anuphan);
    font-weight: 500;
    font-size: 0.875rem; /* 14px */
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: var(--secondary-yellow);
}

.section-label {
    color: var(--primary-yellow);
    font-family: var(--font-anuphan);
    font-weight: 500;
    font-size: clamp(1.125rem, 1rem + 0.5vw, 1.25rem); /* 18px to 20px */
    text-transform: capitalize;
    margin-bottom: 8px;
    display: block;
}

.heading-hero {
    font-family: var(--font-anuphan);
    font-weight: 600;
    font-size: clamp(2.25rem, 1.5rem + 2.5vw, 4rem); /* 36px to 64px */
    line-height: 1.17;
}

.heading-section {
    font-family: var(--font-anuphan);
    font-weight: 600;
    font-size: clamp(1.75rem, 1.25rem + 1.5vw, 3rem); /* 28px to 48px */
    line-height: 1.16;
}

/* Header */
header {
    background: var(--bg-white);
    padding: clamp(1rem, 1.5vw, 1.5rem) 0; /* 16px to 24px */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo img {
    width: clamp(50px, 5vw, 74px);
    height: auto;
}

.logo-name {
    font-family: var(--font-anuphan);
    font-weight: 600;
    font-size: clamp(1.5rem, 1rem + 1vw, 2rem); /* 24px to 32px */
    line-height: 1;
}

.logo-text p {
    font-family: var(--font-anuphan);
    font-weight: 400;
    font-size: clamp(0.75rem, 0.7rem + 0.2vw, 0.875rem); /* 12px to 14px */
}

nav ul {
    display: flex;
    gap: 32px;
}

nav a {
    font-family: var(--font-anuphan);
    font-size: 0.875rem; /* 14px */
    font-weight: 400;
    transition: color 0.2s;
}

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

nav a.active {
    font-weight: 600; /* Makes it stand out a bit more */
}

/* Hero Section */
.hero {
    height: 100vh;
    height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center; /* Centered horizontally */
    text-align: center;      /* Centered text */
    position: relative;
    color: var(--bg-white);
    padding-top: 50px;       /* Reduced padding to keep it more centered vertically */
    overflow: hidden; 
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.hero .container {
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero .heading-hero {
    color: var(--bg-white);
    margin-left: 0;
}

/* About Section */
.about-section {
    padding: var(--section-padding);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: clamp(2rem, 4vw, 4rem); /* 32px to 64px */
    align-items: center;
}

.about-images {
    display: flex;
    align-items: center;
    gap: 32px;
    position: relative;
    width: 100%;
}

.img-big {
    width: 55%; 
    border-radius: 20px;
    object-fit: cover;
}

.img-small {
    width: 40%;
    border-radius: 20px;
    object-fit: cover;
    position: static; 
    border: none;
    box-shadow: none;
    transform: translateY(20%);
}

.about-content-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-content-wrapper .heading-section {
    margin-bottom: 8px;
}

.about-text {
    font-size: clamp(0.875rem, 0.85rem + 0.25vw, 1rem); /* 14px to 16px */
    font-weight: 300;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: justify;
}

/* Why Choose Us Section */
.why-section {
    padding: var(--section-padding);
    text-align: center;
}

.why-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: clamp(1.5rem, 3vw, 3rem);
    margin: 48px auto 0;
}

.card-feature {
    background: var(--bg-light-grey);
    padding: 40px 32px;
    border-radius: 28px;
    transition: transform 0.3s;
    flex: 0 1 320px;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

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

.card-feature img {
    margin: 0 auto 24px;
    width: 42px;
    height: 42px;
}

.card-feature h3 {
    font-size: clamp(1.125rem, 1rem + 0.5vw, 1.25rem); /* 18px to 20px */
    font-weight: 700;
    margin-bottom: 16px;
}

.card-feature p {
    font-size: clamp(0.875rem, 0.85rem + 0.25vw, 0.9375rem); /* 14px to 15px */
    font-weight: 400;
}

/* Services Section */
.services-section {
    padding: var(--section-padding);
    background: #fdfdfd;
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}
/* --- REPLACE THESE CLASSES IN YOUR CSS FILE --- */

.card-service {
    display: flex;
    flex-direction: column;
    border-radius: var(--card-radius);
    overflow: hidden;
    background: var(--bg-white);
    /* Slightly darkened the shadow and added a subtle border so the white card pops off your light grey background */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); 
    border: 1px solid #f0f0f0; 
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.card-service:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12); /* Shadow grows on hover */
}

.card-service img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.service-overlay {
    flex-grow: 1;
    background: var(--bg-white); /* CHANGED: Yellow block is now clean white */
    padding: 24px 20px; /* CHANGED: Added more breathing room */
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start; /* Changed to flex-start to support left-aligned text */
    border-top: 4px solid var(--primary-yellow); /* CHANGED: The yellow is now a sleek accent line under the image */
}

.service-overlay h3 {
    font-size: 20px; /* Slightly refined size */
    font-weight: 700;
    margin-bottom: 12px;
    text-align: center;
    width: 100%;
    min-height: 2.5em; 
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.3;
    color: var(--text-primary);
}

.service-overlay p {
    font-size: 15px;
    font-weight: 400; /* Bumped from 300 to 400 for better readability on white */
    text-align: left; /* CHANGED: Left aligned text is much easier to read */
    line-height: 1.6; /* CHANGED: Increased line height for legibility */
    color: #555555; /* Soft dark grey reduces eye strain */
    width: 100%;
    margin: 0;
}

/* Team Section */
.team-section {
    padding: var(--section-padding);
    text-align: center;
}

.team-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 32px;
    margin-top: 48px;
}

.team-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1 1 300px;
    max-width: 380px;
}

.team-card img {
    border-radius: var(--card-radius);
    margin-bottom: 20px;
    width: 90%;
    max-width: 320px; /* Prevent too wide on large screens */
    height: 400px; /* Slightly reduced */
    object-fit: cover;
}

.team-card h3 {
    font-size: clamp(1.125rem, 1rem + 0.5vw, 1.25rem); /* 18px to 20px */
    font-weight: 300;
}

.team-card p {
    font-size: 1rem;
    font-weight: 700;
}

.team-quote {
    background: var(--bg-light-grey);
    padding: 48px;
    border-radius: var(--card-radius);
    font-size: clamp(1rem, 0.9rem + 0.5vw, 1.5rem); /* 16px to 24px */
    font-weight: 300;
    line-height: 1.4;
    align-self: flex-start;
    flex: 1 1 300px;
    max-width: 720px;
    text-align: center;
}

/* Clients Section */
.clients-section {
    padding: var(--section-padding);
    text-align: center;
}

.clients-bg {
    background: var(--primary-yellow);
    padding: 40px 0;
    margin-top: 48px;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
}

.clients-grid {
    display: flex; /* Changed from grid to flex for better control */
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap; /* Only wrap on desktop if needed, but usually we want row */
}

.client-logo-box {
    transition: transform 0.3s;
    flex: 0 0 auto;
}

.client-logo-box img {
    height: 80px; /* Fixed height for consistency */
    width: auto;
    object-fit: contain;
}

.client-logo-box:hover {
    transform: scale(1.1);
}

/* Contact Section */
.contact-section {
    padding: var(--section-padding);
    background: var(--bg-white);
    overflow: hidden;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
}

.contact-image-col {
    text-align: center;
}

.contact-image-col .section-label,
.contact-image-col .heading-section {
    text-align: center;
}

.contact-content-col {
    display: flex;
    flex-direction: column;
    gap: 48px;
    padding-top: 0;
}

.contact-details p {
    font-weight: 300;
    font-size: clamp(1rem, 0.9rem + 0.25vw, 1.25rem); /* 16px to 20px */
    margin-bottom: 12px;
    text-align: left;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    background: var(--bg-light-grey);
    padding: 16px 24px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: background 0.3s ease;
}

.form-group:focus-within {
    background: #eeeeee;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    border: none;
    background: transparent;
    font-family: var(--font-anuphan);
    font-size: 1.125rem;
    color: var(--text-primary);
    outline: none;
    padding: 4px 0;
}

.form-group textarea {
    resize: none;
    min-height: 80px;
}

.btn-submit {
    margin-top: 12px;
    width: 100%;
    padding: 16px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.footer-bar {
    height: 120px; 
    background: var(--primary-yellow);
    width: 100%;
    transform-origin: left;
    margin-top: 40px;
}

.scale-x-in {
    transform: scaleX(0);
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Page 2 specific / Mission Vision extracted to mission.css */

/* Responsive */
@media (max-width: 1024px) {
    .why-grid, .team-grid { grid-template-columns: 1fr 1fr; }
    .about-grid { gap: 32px; }
    
    /* Clients maintain single row with scroll on tablets too if needed, or wrap */
    .clients-grid {
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        padding-bottom: 16px; /* Space for scrollbar */
         -webkit-overflow-scrolling: touch;
    }
}

@media (max-width: 768px) {
    .hero { justify-content: center; text-align: center; }
    
    /* Stacking grids */
    .about-grid, .footer-inner { grid-template-columns: 1fr; }
    .why-grid { flex-direction: column; align-items: center; }
    .team-grid { flex-direction: column; align-items: center; }
    
    /* About Section Mobile specific */
    .about-images {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }
    .img-big { width: 70%; }
    .img-small { width: 60%; transform: none; }
    
    /* Clients Section Mobile Fix */
    .clients-grid {
        flex-wrap: nowrap;
        overflow-x: auto;
        justify-content: flex-start;
        gap: 20px;
        padding-bottom: 10px;
        scrollbar-width: none; /* Firefox */
        -ms-overflow-style: none; /* IE/Edge */
    }
    .clients-grid::-webkit-scrollbar {
        display: none; /* Chrome/Safari */
    }
    
    .client-logo-box img {
        height: 50px; /* Reduced height for mobile */
        width: auto;
    }

    /* Team Section Mobile Fix */
    .team-grid {
        justify-content: center;
    }
    .team-card, .team-quote {
        max-width: 100%;
        width: 100%;
    }
    .team-card img {
        width: 250px;
        height: 320px;
    }

    /* Services Section Mobile Fix */
    .card-service {
        height: auto;
    }
    .card-service img {
        height: 140px;
    }

    /* Contact Section */
    .contact-image-col img {
        max-width: 80%; /* Prevent full width visual overload */
        margin: 32px auto 0;
        display: block;
    }
    
    .contact-details p {
        text-align: center; /* Center contact details on mobile */
    }

    /* Why Section Mobile Fix */
    .card-feature {
        width: 100%;
        max-width: 320px;
        min-height: auto;
        aspect-ratio: 1 / 1;
    }
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transition-duration: 0.8s;
    transition-timing-function: ease-out;
    transition-property: opacity, transform;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: none;
}

/* Specific Animation Types */
.fade-in-up {
    transform: translateY(60px);
}

.fade-in {
    /* Opacity handled by base class, this class is for semantic clarity */
    transform: none;
}

.scale-in {
    transform: scale(0.8);
    transition-duration: 0.5s;
}

.slide-in-left {
    transform: translateX(-60px);
    transition-duration: 0.6s;
}

.slide-in-right {
    transform: translateX(60px);
    transition-duration: 0.6s;
}

/* Stagger Delays */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; }


/* --- Hamburger Icon (Hidden on Desktop) --- */
.hamburger {
    display: none;
    cursor: pointer;
    border: none;
    background: none;
    padding: 5px;
    z-index: 1002;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--text-primary);
    transition: all 0.3s ease-in-out;
    border-radius: 3px;
}

.mobile-only {
    display: none; /* Hide mobile elements on desktop */
}

/* --- Mobile Menu Styles --- */
@media (max-width: 768px) {

    .desktop-only { 
        display: none !important; 
    }
    
    .mobile-only { 
        display: block; 
        margin-top: 16px; 
    }

    .hamburger { 
        display: block; 
    }

    /* Off-Canvas Mobile Navigation */
    #main-nav {
        position: fixed;
        top: 0;
        right: -100%; /* Hidden completely to the right by default */
        width: 280px;
        height: 100vh;
        background-color: var(--bg-white);
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding: 40px;
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1001;
    }

    /* Class added by JS to slide the menu in */
    #main-nav.active {
        right: 0;
    }

    nav ul {
        display: flex;
        flex-direction: column;
        gap: 32px;
        width: 100%;
        text-align: center;
    }

    nav ul li a.nav-link {
        font-size: 1.25rem;
        font-weight: 500;
    }

    /* Hamburger to 'X' Animation */
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}