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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    color: #1a1a2e;
    line-height: 1.6;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #6c63ff;
}

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

nav a {
    text-decoration: none;
    color: #1a1a2e;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #6c63ff;
}

/* Hero */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 80vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero p {
    font-size: 1.4rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 0.9rem 2.5rem;
    background: #fff;
    color: #6c63ff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Sections */
section {
    padding: 5rem 10%;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: #1a1a2e;
}

.about p,
.contact p {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.15rem;
    color: #555;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    color: #6c63ff;
}

.card p {
    color: #666;
}

/* Contact */
.contact {
    background: #f8f9fa;
    text-align: center;
}

.contact .cta-button {
    margin-top: 1.5rem;
    background: #6c63ff;
    color: #fff;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background: #1a1a2e;
    color: #aaa;
    font-size: 0.9rem;
}

/* Error Page */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    text-align: center;
}

.error-page h1 {
    font-size: 5rem;
    color: #6c63ff;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

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

    nav {
        flex-direction: column;
        gap: 1rem;
    }

    section {
        padding: 3rem 5%;
    }
}