/* =====================================================
   Buttons — 5th Ave
   Only two variants: btn-primary and btn-secondary.
   Never add btn-outline — use btn-secondary instead.
   All values use CSS custom properties only.
   ===================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: background-color var(--ease-base), border-color var(--ease-base), color var(--ease-base), box-shadow var(--ease-base);
    white-space: nowrap;
}

/* ---- Primary — solid ---- */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

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

/* ---- Secondary — outline ---- */
.btn-secondary {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}

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

/* ---- Inverse — white button for dark (primary) sections ---- */
/* Third variant allowed per RULE 7: documented in doc/DESIGN-SYSTEM.md */
.btn-inverse {
    background-color: var(--color-white);
    border-color: var(--color-white);
    color: var(--color-primary);
}

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