body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #f8f9fa;
}

.card { 
    background: white; 
    padding: 32px 24px; 
    border-radius: 16px; 
    box-shadow: 0 8px 24px rgba(0,0,0,0.05); 
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h1 { font-size: 1.6rem; color: #212529; margin-bottom: 8px; }
p { color: #6c757d; font-size: 0.95rem; margin-bottom: 24px; }

input { 
    width: 100%; 
    padding: 16px; 
    margin-bottom: 16px; 
    border: 2px solid #dee2e6; 
    border-radius: 12px; 
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}
input:focus { border-color: #007bff; }

button { 
    background: #007bff; 
    color: white; 
    border: none; 
    padding: 16px; 
    border-radius: 12px; 
    font-size: 1.1rem; 
    font-weight: 600;
    width: 100%; 
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,123,255,0.2);
}
button:active { transform: scale(0.98); }