@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700&display=swap');

:root {
    /* Color Palette */
    --navy: #002147;
    --navy-rgb: 0, 33, 71;
    --light-blue: #00AEEF; /* Contextual light blue */
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --gray-100: #E9ECEF;
    --gray-800: #343A40;
    
    /* Design Tokens */
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    
    /* Layout */
    --container: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--gray-800);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

/* Utilities */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 100px 0;
}

.text-navy { color: var(--navy); }
.text-blue { color: var(--light-blue); }
.bg-navy { background-color: var(--navy); }
.bg-off-white { background-color: var(--off-white); }

/* Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

header.scrolled {
    background: rgba(0, 33, 71, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    height: 70px;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 42px;
    width: auto;
    display: block;
}

.logo span {
    color: var(--light-blue);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.8;
}

.nav-links a:hover {
    opacity: 1;
    color: var(--light-blue);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--navy);
    color: var(--white);
    overflow: hidden;
}

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

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 33, 71, 0.9) 0%, rgba(139, 195, 74, 0.6) 100%);
    z-index: 2;
}

.hero-bg .hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.hero-bg .hero-video.active {
    opacity: 0.8;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    max-width: 600px;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--light-blue);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 174, 239, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 174, 239, 0.4);
    background-color: #009BD5;
}

/* Logo Grid */
.logo-section {
    padding: 60px 0;
    border-bottom: 1px solid var(--gray-100);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--navy);
    position: relative;
    padding-bottom: 1rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--light-blue);
}

.logo-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4rem 5rem;
    align-items: center;
}

.logo-item {
    transition: var(--transition);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-item img {
    max-height: 100%;
    width: auto;
    filter: grayscale(1) opacity(0.6);
    transition: var(--transition);
}

.logo-item:hover img {
    filter: grayscale(0) opacity(1);
    transform: scale(1.05);
}

/* About Section */
.about {
    display: flex;
    gap: 4rem;
    align-items: center;
}

.about-content {
    flex: 1;
}

.about-image {
    flex: 1;
    position: relative;
}

.about-image img {
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--light-blue);
    color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
}

.experience-badge span {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 3rem 2rem;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-top: 4px solid var(--light-blue);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--gray-100);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--navy);
    font-size: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--navy);
}

/* Credentials Banner */
.credentials-banner {
    background: var(--navy);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.credentials-content {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.credential-item h4 {
    font-size: 1.5rem;
    color: var(--light-blue);
}

/* Footer */
footer {
    background: #001630;
    color: var(--white);
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-logo {
    margin-bottom: 1.5rem;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
    color: var(--light-blue);
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.6;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    header .btn {
        display: none; /* Hide redundant button in header on mobile */
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo img {
        height: 32px;
    }
    
    .hero {
        text-align: center;
    }
    
    .hero p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .about {
        flex-direction: column;
    }
    
    .section-padding {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.1rem;
    }
    
    .logo span {
        display: none; /* Hide "PROJECTS" on very small screens if necessary */
    }
}