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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: linear-gradient(135deg, #eef2f7, #dbe6f6);
    min-height: 100vh;
}

/* Header */
header {
    background: #003087;
    color: white;
    padding: 1rem;
    text-align: center;
    font-weight: 600;
}

/* Card */
.hero {
    background: #fff;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 15px 40px rgba(0,0,0,0.08);
    transition: 0.3s;
}

.hero:hover {
    transform: translateY(-3px);
}

/* Input */
.form-control {
    border-radius: 10px;
    padding: 0.9rem;
}

/* Button */
.btn-primary {
    border-radius: 10px;
    font-weight: 600;
}

/* Result Card */
.result-card {
    border-radius: 15px;
    animation: fadeIn 0.4s ease;
}

/* Animation */
@keyframes fadeIn {
    from {opacity:0; transform:translateY(20px);}
    to {opacity:1; transform:translateY(0);}
}

/* Footer */
footer {
    font-size: 0.85rem;
    color: #777;
}

/* Mobile Optimization */
@media (max-width: 576px) {
    .hero {
        padding: 1.5rem;
    }
}