:root {
    /* Color Palette */
    --primary-color: #004b87; /* Deep Blue */
    --secondary-color: #0099cc; /* Cyan */
    --accent-color: #ff3333; /* Vibrant Red/Orange */
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f4f7f6;
    --bg-white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    
    /* Spacing & Utilities */
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease-in-out;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

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

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

/* Utilities */
.text-center { text-align: center; }
.section-padding { padding: 80px 0; }
.bg-light { background-color: var(--bg-light); }
.text-white { color: var(--bg-white); }
.text-white h1, .text-white h2, .text-white p { color: var(--bg-white); }

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    color: var(--bg-white);
    box-shadow: 0 4px 15px rgba(0,75,135, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,75,135, 0.4);
    color: var(--bg-white);
}

.btn-accent {
    background-color: var(--accent-color);
    color: var(--bg-white);
}
.btn-accent:hover {
    background-color: #e60000;
    color: var(--bg-white);
}

/* Glassmorphism Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}
.glass-card:hover {
    transform: translateY(-5px);
}

/* Header & Nav */
header {
    background-color: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo h2 {
    margin: 0;
    color: var(--accent-color);
    font-size: 24px;
}
.logo span {
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
}

.nav-links li a {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-dark);
    position: relative;
}

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

.nav-links li a:hover::after, .nav-links li a.active::after {
    width: 100%;
}
.nav-links li a:hover, .nav-links li a.active {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(0, 75, 135, 0.7), rgba(0, 0, 0, 0.7)), url('../images/hero.png') center/cover no-repeat;
    display: flex;
    align-items: center;
    position: relative;
    color: var(--bg-white);
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--bg-white);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #e0e0e0;
}

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 50%;
    height: 3px;
    bottom: -10px;
    left: 25%;
    background-color: var(--accent-color);
}

/* Grids */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    align-items: center;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: var(--bg-white);
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: #ccc;
}
.footer-col ul li a:hover {
    color: var(--bg-white);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #aaa;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    .hero-content h1 {
        font-size: 2.2rem;
    }
    .grid-3, .grid-2, .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Client Slider Marquee */
.client-slider-container {
    width: 100%;
    overflow: hidden;
    padding: 30px 0;
    background: var(--bg-white);
}

.client-slider {
    display: flex;
    gap: 30px;
    animation: scrollSlider 30s linear infinite;
    width: max-content;
}

.client-slider:hover {
    animation-play-state: paused;
}

.client-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    border: 2px solid var(--secondary-color);
    padding: 10px;
    background: var(--bg-white);
    border-radius: 4px;
    transition: var(--transition);
}

.client-logo:hover {
    box-shadow: 0 4px 15px rgba(0, 153, 204, 0.3);
    transform: scale(1.05);
}

@keyframes scrollSlider {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-50% - 15px)); }
}

/* Clients Grid Page */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    justify-items: center;
}
.clients-grid .client-logo {
    height: 120px;
    width: 100%;
}