* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header h1 {
    color: #1a1a1a;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
}

.form-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.form-section h2 {
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #4a5568;
    font-weight: 500;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    background: #f8fafc;
    transition: all 0.3s ease;
}

.input-group textarea {
    min-height: 100px;
    resize: vertical;
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.theme-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.theme-option {
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.theme-option:hover {
    transform: translateY(-2px);
}

.theme-option.active {
    border-color: #3b82f6;
}

.theme-preview {
    height: 2.5rem;
    border-radius: 0.5rem;
}

.preview-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.card-preview {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 1rem;
    padding: 2rem;
    color: white;
    text-align: center;
    margin-bottom: 1.5rem;
    transition: background 0.3s ease;
}

.profile-pic {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.2);
}

.profile-pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.card-content p {
    opacity: 0.9;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
}

.social-links a {
    color: white;
    font-size: 1.25rem;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.social-links a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.card-details {
    text-align: left;
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.card-details p {
    margin-bottom: 0.5rem;
}

.buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.button {
    background: #3b82f6;
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    flex: 1;
}

.button:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

.button.secondary {
    background: #64748b;
}

.button.secondary:hover {
    background: #475569;
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .form-section, .preview-section {
        padding: 1.5rem;
    }
}