:root {
    /* Light mode colors */
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --background-color: #ffffff;
    --card-bg-color: #f9fafb;
    --border-color: #e5e7eb;
    --footer-bg: #f3f4f6;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    /* Dark mode colors */
    --primary-color: #3b82f6;
    --secondary-color: #60a5fa;
    --text-color: #f9fafb;
    --background-color: #111827;
    --card-bg-color: #1f2937;
    --border-color: #374151;
    --footer-bg: #1f2937;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header and Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--background-color);
    box-shadow: 0 2px 10px var(--shadow-color);
    z-index: 1000;
    transition: background-color 0.3s ease;
}

nav {
    padding: 1rem 0;
}

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

.logo a {
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.logo a:hover {
    opacity: 0.9;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-main {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 1px;
    line-height: 1;
}

.logo-sub {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 2px;
}

@media (max-width: 480px) {
    .logo-main {
        font-size: 1.5rem;
    }
    
    .logo-sub {
        font-size: 0.8rem;
    }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

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

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

#theme-toggle:hover {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 10rem 0 5rem;
    background: linear-gradient(135deg, var(--background-color), var(--card-bg-color));
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* About Section */
.about {
    padding: 5rem 0;
    background-color: var(--background-color);
}

.about h2, .services h2, .contact h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.about-content {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

.about-text {
    max-width: 800px;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Services Section */
.services {
    padding: 5rem 0;
    background-color: var(--card-bg-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--background-color);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px var(--shadow-color);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: var(--background-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.contact-details {
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.contact-item i {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-right: 1rem;
}

.contact-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s ease;
}

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

/* Footer */
footer {
    background-color: var(--footer-bg);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.copyright {
    text-align: center;
    color: var(--text-color);
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero h2 {
        font-size: 2.4rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        margin-bottom: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--background-color);
        padding: 1rem 0;
        flex-direction: column;
        gap: 1rem;
        box-shadow: 0 5px 10px var(--shadow-color);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .about h2, .services h2, .contact h2 {
        font-size: 1.8rem;
    }
}