/**
 * Buttons – minimal: rectangular, slightly rounded, dark text on soft beige.
 */

.btn {
    appearance: none;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.65rem 1.1rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s ease, opacity 0.2s ease;
    background: var(--color-surface);
    color: var(--color-text);
}

.btn:active {
    opacity: 0.92;
}

.btn-primary {
    background: var(--color-surface);
    color: var(--color-text);
}

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

.btn-secondary {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-bg-elevated);
    border-color: var(--border-strong);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.16);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
}

/* Viewer/3D action button – align to minimal style */
.viewer-action-btn {
    border: 1px solid var(--color-border);
    background: var(--color-surface-strong);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.5rem 0.75rem;
    min-height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.viewer-action-btn:hover {
    background: var(--color-bg-elevated);
    border-color: var(--border-strong);
}

.viewer-action-btn.cart {
    background: var(--color-surface);
    border-color: var(--border-strong);
    color: var(--color-text);
}

.viewer-action-btn.cart:hover {
    background: var(--color-accent-hover);
}

.cart-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 18px;
    padding: 0 0.3rem;
    margin-left: 0.35rem;
    border-radius: 4px;
    background: var(--color-brand-pill-bg);
    color: var(--color-brand-pill-text);
    font-size: 0.7rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}