:root {
    --primary-color: #1a3a5f;
    --secondary-color: #4a90e2;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.95);
    --font-family: 'Inter', sans-serif;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --primary-color: #64b5f6;
    --secondary-color: #2196f3;
    --text-color: #e0e0e0;
    --bg-color: #121212;
    --white: #1e1e1e;
    --card-bg: #1e1e1e;
    --header-bg: rgba(18, 18, 18, 0.95);
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
}

header {
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-toggle {
    background: none;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    padding: 5px 10px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: var(--transition);
    margin-left: 1rem;
}

.theme-toggle:hover {
    background-color: var(--secondary-color);
    color: white;
}

.logo {
    height: 60px;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.company-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

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

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

.hero {
    height: 80vh;
    background: linear-gradient(rgba(26, 58, 95, 0.8), rgba(26, 58, 95, 0.8)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 0 1rem;
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: slideInLeft 1s ease-out;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 700px;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-content .cta-button {
    animation: fadeInUp 1s ease-out 0.6s both;
}

.cta-button {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #357abd;
}

.services, .contact {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.services h2, .contact h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

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

.service-card {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--secondary-color);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

/* Projects Section */
.projects {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
    text-align: left;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.project-card .project-image {
    transition: transform 0.5s ease;
}

.project-card:hover .project-image {
    transform: scale(1.1);
}

.project-image {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.project-tag {
    display: inline-block;
    background-color: var(--secondary-color);
    color: white;
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-bottom: 1rem;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.info-item {
    font-size: 1.1rem;
}

.info-item strong {
    color: var(--primary-color);
    margin-right: 10px;
}

.info-item a {
    color: var(--secondary-color);
    text-decoration: none;
}

footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        gap: 1rem;
    }
}