/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-radius: 8px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

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

a:hover {
    color: var(--accent-color);
}

/* Header and Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.nav-links a:hover {
    background-color: var(--light-bg);
    color: var(--secondary-color);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
}

section {
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(rgba(74, 85, 162, 0.5), rgba(44, 62, 80, 0.6)), 
                url('images/hero-background.jpg') center/cover no-repeat;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.hero h1 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    font-weight: 600;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
}

.hero .subtitle {
    font-size: 1.3rem;
    color: var(--white);
    max-width: 900px;
    margin: 0 auto;
    font-weight: 400;
    text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.7);
}

/* Expertise Section */
.expertise {
    background-color: var(--white);
}

.expertise h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.expertise p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: #555;
}

/* Clients Section */
.clients {
    background-color: var(--light-bg);
}

.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.client-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.client-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.client-card img[src$=".png"] {
    object-fit: contain;
    padding: var(--spacing-sm);
    background-color: var(--light-bg);
}

.client-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.client-card h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* CTA Section */
.cta {
    text-align: center;
    background-color: var(--primary-color);
    color: var(--white);
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    color: var(--white);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-md);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.footer-info h3,
.footer-links h4 {
    margin-bottom: var(--spacing-sm);
}

.footer-info p,
.footer-info a {
    color: #ecf0f1;
    margin-bottom: var(--spacing-xs);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: #ecf0f1;
}

.footer-links a:hover {
    color: var(--white);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Form Result Messages */
.form-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: 500;
    display: block;
}

.form-result.sending {
    background-color: #e3f2fd;
    color: #1976d2;
}

.form-result.success {
    background-color: #e8f5e9;
    color: #388e3c;
}

.form-result.error {
    background-color: #ffebee;
    color: #c62828;
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.team-member {
    background-color: var(--light-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
}

.team-member h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.team-member .role {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.team-member p {
    color: #666;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: var(--spacing-sm);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .hero {
        min-height: 400px;
    }

    section {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .client-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }

    .nav-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .hero h1 {
        font-size: 1.5rem;
    }
}