/* Input Component */
.rail-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.rail-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--rail-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rail-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--rail-radius-sm);
    border: 1px solid var(--rail-border);
    font-size: 1rem;
    color: var(--rail-text);
    background-color: var(--rail-surface);
    transition: border-color var(--rail-transition), box-shadow var(--rail-transition);
    font-family: inherit;
}

.rail-input:focus {
    border-color: var(--rail-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    outline: none;
}

.rail-input:disabled {
    background-color: #F1F5F9;
    opacity: 0.7;
}

/* Invalid state */
.rail-input.is-invalid {
    border-color: var(--rail-danger);
}
.rail-input.is-invalid:focus {
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.1);
}