:root {
    /* Brand Colors */
    --primary-color: #2596be; /* User specified Blue */
    --primary-dark: #1a6b8a; /* Darker shade for hover/text */
    --accent-color: #ffd700; /* Subtle gold for "premium" touches */
    
    /* Light Theme Palette */
    --bg-body: #ffffff;
    --bg-light: #f4f7f6; /* Very light grey/blue for section variation */
    --bg-card: #ffffff;
    
    --text-main: #2c3e50; /* Dark blue-grey for readability */
    --text-muted: #596a7b;
    --text-light: #ffffff;
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    --shadow-card: 0 10px 30px rgba(37, 150, 190, 0.1);
    --shadow-hover: 0 15px 40px rgba(37, 150, 190, 0.2);
    
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: #1a252f;
}

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

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

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

section[id] {
    scroll-margin-top: 112px;
}

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

.text-primary {
    color: var(--primary-color);
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--primary-color);
    color: #fff;
    font-weight: 600;
    border-radius: 4px; /* Slightly squared for professional look */
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(37, 150, 190, 0.3);
    border: 2px solid var(--primary-color);
}

.btn:hover {
    background-color: transparent;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 150, 190, 0.4);
}

/* Separators */
.separator {
    height: 4px;
    width: 80px;
    background-color: var(--primary-color);
    margin: 20px auto;
    border-radius: 2px;
}

.separator-left {
    margin: 20px 0;
}

/* Header */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

header .container {
    max-width: 1400px;
}

.header-bottom-bar {
    background-color: var(--primary-color);
    color: #f4f4f4; /* Almost full white */
    text-align: center;
    padding: 8px 0;
    font-weight: 800;
    font-size: 1.05rem; /* Increased size */
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-family: var(--font-heading);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 18px;
}

.nav-links a {
    font-weight: 700;
    font-size: 1.05rem; /* Increased size */
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
}

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

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

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    margin: 5px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    margin-top: 115px; /* Offset fixed header + bottom bar */
    height: 70vh;
    min-height: 500px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2f7 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Using the logo color for a banner accent */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: var(--primary-color);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.1;
}

.hero-content {
    max-width: 700px;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #1a252f;
}

.hero h1 span {
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 600px;
}

/* Carousel Section - Cross-Fade */
.carousel-section {
    position: relative;
    width: 100%;
    height: 650px;
    overflow: hidden;
    background: #000;
}

.carousel-track {
    width: 100%;
    height: 100%;
    position: relative;
}

.carousel-slide {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease-in-out; /* Smooth cross-fade */
    z-index: 1;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 2;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
}

/* About / Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 0;
}

.feature-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s;
    border-top: 4px solid transparent;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-top-color: var(--primary-color);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin: 0 auto 20px auto;
    display: block;
}

/* Logistics / Split Sections */
.split-section {
    display: flex;
    align-items: center;
    gap: 50px;
    overflow: hidden;
}

.split-text {
    flex: 1;
    min-width: 300px;
}

.split-image {
    flex: 1;
    min-width: 300px;
    height: 500px; /* Tall image */
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.split-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.split-image:hover img {
    transform: scale(1.05);
}

/* Group Companies Section */
.group-companies-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.group-link {
    display: inline-block;
    padding: 15px 30px;
    background: #fff;
    border: 1px solid #eee;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 50px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
}

.group-link:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(37, 150, 190, 0.2);
}

/* Contact */
.contact-section {
    text-align: center;
}

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

.contact-card {
    background: #fff;
    padding: 30px;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}

.contact-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-card);
}

.contact-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Phone Alignment */
.phone-row {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 5px;
}
.phone-label {
    width: 90px;
    text-align: right;
    margin-right: 10px;
    font-weight: 700;
}
.phone-number {
    text-align: left;
    width: 140px;
}

/* Footer */
footer {
    background-color: #1a252f;
    color: #ecf0f1;
    padding: 40px 0;
    font-size: 0.9rem;
}

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

.footer-links a {
    margin-left: 20px;
    color: #bdc3c7;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Mobile */
@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links {
        position: fixed;
        left: -100%;
        top: 80px;
        background: #fff;
        width: 100%;
        flex-direction: column;
        padding: 40px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        transition: 0.3s;
    }
    .nav-links.active { left: 0; }
    .hero h1 { font-size: 2.5rem; }
    .hero::before { width: 100%; height: 30%; bottom: 0; top: auto; clip-path: none; opacity: 0.05; }
    .carousel-section { height: 400px; }
    .split-section { flex-direction: column !important; }
    .split-image { height: 300px; width: 100%; }
}