:root {
    --primary-blue: #0284c7;
    --accent-blue: #0ea5e9;
    --charcoal: #334155;
    --dark-charcoal: #1e293b;
    --medium-gray: #64748b;
    --light-gray: #f1f5f9;
    --blue-tint: #e0f2fe;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--charcoal);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-logo .logo {
    height: 110px; /* Desktop size - larger */
    width: auto;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--charcoal);
    font-weight: 500;
    transition: color 0.3s;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
    padding: 120px 20px 80px;
    margin-top: 70px;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-blue);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.tech-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    transition: transform 0.3s;
}

.tech-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

/* Services Section */
.services {
    padding: 80px 20px;
    background: var(--blue-tint);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 50px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--charcoal);
}

.service-card p {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* Expertise Section */
.expertise {
    padding: 80px 20px;
    background: var(--white);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.expertise-category {
    background: var(--blue-tint);
    padding: 30px;
    border-radius: 12px;
    border-left: 4px solid var(--primary-blue);
}

.expertise-category h3 {
    color: var(--charcoal);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.expertise-category ul {
    list-style: none;
}

.expertise-category li {
    padding: 8px 0;
    color: var(--medium-gray);
    position: relative;
    padding-left: 20px;
}

.expertise-category li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

/* Contact Section */
.contact {
    padding: 80px 20px;
    background: var(--blue-tint);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.contact-info h3 {
    color: var(--charcoal);
    margin-bottom: 30px;
    font-size: 1.5rem;
}

.contact-item {
    margin-bottom: 20px;
}

.contact-item strong {
    display: block;
    color: var(--charcoal);
    margin-bottom: 5px;
}

.contact-item a {
    color: var(--primary-blue);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--charcoal);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

/* Footer */
.footer {
    background: var(--charcoal);
    color: var(--white);
    padding: 40px 20px;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-text p {
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-logo .logo {
        height: 60px; /* Mobile size */
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2rem;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .services-grid,
    .expertise-grid {
        grid-template-columns: 1fr;
    }
}

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

.service-card,
.expertise-category {
    animation: fadeInUp 0.6s ease-out;
}