/* Modern Variables */
:root {
    --primary-color: #4e73df;
    --secondary-color: #858796;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-bg: #f8f9fc;
    --dark-text: #5a5c69;
    --card-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
}

body {
    background-color: var(--light-bg);
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--dark-text);
}

.card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: var(--card-shadow);
    transition: transform 0.2s;
}

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

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #e3e6f0;
    font-weight: 700;
    color: var(--primary-color);
    border-top-left-radius: 0.75rem !important;
    border-top-right-radius: 0.75rem !important;
    padding: 1rem 1.25rem;
}

.form-control {
    border-radius: 0.35rem;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d3e2;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 0.35rem;
    padding: 0.5rem 1.5rem;
    font-weight: 600;
}

.btn-primary:hover {
    background-color: #2e59d9;
    border-color: #2653d4;
}

.auth-card {
    max-width: 400px;
    margin: 5rem auto;
}