/* Button Component */
.rail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--rail-radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    line-height: 1.25rem;
    transition: all var(--rail-transition);
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
}

.rail-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Primary */
.rail-btn-primary {
    background-color: #1E3A8A; /* your existing blue */
    color: #FFFFFF;
}
.rail-btn-primary:hover:not(:disabled) {
    background-color: #1E40AF;
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.2);
    transform: translateY(-1px);
}

/* Secondary */
.rail-btn-secondary {
    background-color: var(--rail-surface);
    color: var(--rail-text);
    border-color: var(--rail-border);
}
.rail-btn-secondary:hover:not(:disabled) {
    background-color: #F1F5F9;
    border-color: #CBD5E1;
}

/* Ghost */
.rail-btn-ghost {
    background: transparent;
    color: var(--rail-text);
    border-color: transparent;
}
.rail-btn-ghost:hover:not(:disabled) {
    background-color: #F1F5F9;
}

/* Danger */
.rail-btn-danger {
    background-color: var(--rail-danger);
    color: white;
}
.rail-btn-danger:hover:not(:disabled) {
    background-color: #B91C1C;
}

/* Icon-only */
.rail-btn-icon {
    padding: 0.5rem;
    border-radius: 50%;
}