:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-dark: #1e293b;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}

.auth-card {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.auth-card h2 {
    font-weight: 700;
    color: var(--text-dark);
}

.form-control {
    padding: 0.75rem 1rem;
    border-radius: 8px;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.2);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem;
    font-weight: 600;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.is-invalid {
    border-color: #dc3545;
}

.invalid-feedback {
    display: block; /* Make sure feedback is shown */
}

.alert {
    border-radius: 8px;
}