/* Base Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-green: #008751; /* Official Nigerian Green */
    --dark-text: #1a1a1a;
    --light-bg: #ffffff;
}

body {
    background-color: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 100;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark-text);
}

.highlight {
    color: var(--primary-green);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 600;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    position: relative;
    height: 70vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    padding: 0 5%;
    /* Placeholder tech team image from Unsplash */
    background-image: url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.65); /* Dark overlay to make text pop */
}

.hero-content {
    position: relative;
    z-index: 1;
    color: #fff;
    max-width: 650px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--primary-green);
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: background 0.3s ease, transform 0.2s;
}

.cta-button:hover {
    background-color: #00683e;
    transform: translateY(-2px);
}

/* Lower Content Grid */
.content-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 6rem 5%;
    align-items: start;
}

/* Tech Stack (Left) */
.tech-stack {
    text-align: center;
}

.tech-stack h2 {
    margin-bottom: 3rem;
    font-size: 2rem;
}

.java-logo {
    max-width: 250px;
    height: auto;
}

/* Contact Card (Right) */
.contact-wrapper h2 {
    margin-bottom: 3rem;
    font-size: 2rem;
    text-align: center;
}

.contact-card {
    background-color: var(--primary-green);
    color: #fff;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 135, 81, 0.2);
}

.contact-card h3 {
    margin-bottom: 2rem;
    font-size: 1.3rem;
    letter-spacing: 1px;
}

.contact-card ul {
    list-style: none;
}

.contact-card li {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-card a {
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s;
}

.contact-card a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid #eaeaea;
    color: #666;
}

/* Mobile Responsiveness */
@media (max-width: 850px) {
    .content-section {
        grid-template-columns: 1fr;
        gap: 5rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none; /* Hides menu on mobile for a cleaner boilerplate */
    }
}