/* Reset and Base Styles */
* {
    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: #333;
    background-color: #f5f5f5;
}

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

/* Header and Navigation */
header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

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

nav h1 {
    font-size: 1.5rem;
    color: white;
}

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

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

.nav-links a:hover,
.nav-links a.active {
    color: #3498db;
}

/* Main Content */
main {
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.cta-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.cta-button:active {
    transform: translateY(0);
}

.message {
    margin-top: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
    min-height: 1.5rem;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background-color: white;
}

.features h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.feature-card {
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-card h4 {
    color: #667eea;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #666;
}

/* About Page Styles */
.about {
    padding: 4rem 0;
    background-color: white;
}

.about h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.about h3 {
    font-size: 1.8rem;
    color: #667eea;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.about p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #555;
}

.tech-list {
    list-style-position: inside;
    margin-bottom: 2rem;
}

.tech-list li {
    font-size: 1.1rem;
    margin: 0.5rem 0;
    color: #555;
}

.info-box {
    background-color: #f0f4ff;
    border-left: 4px solid #667eea;
    padding: 1.5rem;
    margin-top: 2rem;
    border-radius: 4px;
}

.info-box h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.info-box ul {
    list-style-position: inside;
}

.info-box li {
    margin: 0.5rem 0;
    color: #555;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav .container {
        flex-direction: column;
        gap: 1rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

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

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