body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    text-align: center;
    color: white;
    max-width: 600px;
    padding: 2rem;
}

.error-content h1 {
    font-size: 8rem;
    font-weight: bold;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.error-content h2 {
    font-size: 2rem;
    margin: 1rem 0;
    font-weight: 300;
}

.error-content p {
    font-size: 1.2rem;
    margin: 1.5rem 0;
    opacity: 0.9;
    line-height: 1.6;
}

.actions {
    margin-top: 2rem;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    margin: 0 10px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background-color: #007bff;
    color: white;
    border: 2px solid #007bff;
}

.btn-primary:hover {
    background-color: transparent;
    color: #007bff;
    background-color: white;
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: #667eea;
}