:root {
    --primary-color: #6B46C1;
    --secondary-color: #9F7AEA;
    --text-dark: #2D3748;
    --text-light: #718096;
    --bg-light: #F7FAFC;
    --white: #FFFFFF;
    --spacing-unit: 1rem;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 2);
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: calc(var(--spacing-unit) * 8) 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
    opacity: 0.95;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 0.875) calc(var(--spacing-unit) * 2.5);
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

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

.btn-secondary:hover {
    background: #5A3CAF;
    transform: translateY(-2px);
}

/* Features Section */
.features {
    padding: calc(var(--spacing-unit) * 5) 0;
    background: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
}

.feature-card {
    background: var(--white);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.feature-card h3 {
    margin-bottom: calc(var(--spacing-unit) * 0.75);
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* CTA Section */
.cta {
    padding: calc(var(--spacing-unit) * 5) 0;
    text-align: center;
    background: var(--white);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 1);
    color: var(--text-dark);
}

.cta p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--white);
    padding: calc(var(--spacing-unit) * 2) 0;
    text-align: center;
}

/* About Page Styles */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: calc(var(--spacing-unit) * 4) 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
}

.content-section {
    padding: calc(var(--spacing-unit) * 4) 0;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    color: var(--text-dark);
}

.content-section p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-top: calc(var(--spacing-unit) * 2);
}

.value-item {
    text-align: center;
}

.value-item h3 {
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: calc(var(--spacing-unit) * 3);
    margin-top: calc(var(--spacing-unit) * 3);
}

.service-item {
    background: var(--bg-light);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
}

.service-item h3 {
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.service-item ul {
    list-style: none;
    color: var(--text-light);
}

.service-item li {
    padding: calc(var(--spacing-unit) * 0.5) 0;
    padding-left: calc(var(--spacing-unit) * 1.5);
    position: relative;
}

.service-item li:before {
    content: "✓";
    color: var(--secondary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    margin-top: calc(var(--spacing-unit) * 3);
}

.form-group {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.form-group label {
    display: block;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
    color: var(--text-dark);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: calc(var(--spacing-unit) * 0.75);
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.1);
}

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

.contact-info {
    text-align: center;
    margin-top: calc(var(--spacing-unit) * 3);
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid #E2E8F0;
}

.contact-info h3 {
    color: var(--text-dark);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .features h2,
    .cta h2 {
        font-size: 1.75rem;
    }

    .nav-links {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 0.5);
    }

    .navbar .container {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 1);
    }
}