.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;font-size:0.95rem;font-weight:600;border-radius:var(--border-radius-md);transition:var(--transition-fast);text-align:center;user-select:none;}.btn:disabled{opacity:0.6;cursor:not-allowed;}.btn-primary{background-color:var(--primary);color:white;border:1px solid var(--primary);}.btn-primary:hover:not(:disabled){background-color:var(--primary-dark);border-color:var(--primary-dark);}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);}.btn-secondary:hover:not(:disabled){background-color:var(--border-color);}.btn-outline{background-color:transparent;color:var(--primary);border:1.5px solid var(--primary);}.btn-outline:hover:not(:disabled){background-color:var(--secondary-light);}.btn-accent{background-color:var(--accent);color:white;border:1px solid var(--accent);}.btn-accent:hover:not(:disabled){background-color:var(--accent-dark);border-color:var(--accent-dark);}.btn-accent-outline{background-color:transparent;color:var(--accent);border:1.5px solid var(--accent);}.btn-accent-outline:hover:not(:disabled){background-color:var(--accent-light);}.btn-sm{padding:8px 16px;font-size:0.85rem;border-radius:var(--border-radius-sm);}.btn-lg{padding:14px 32px;font-size:1.05rem;}.btn-full{width:100%;}.btn-pill{border-radius:var(--border-radius-full);}.btn-qty{width:36px;height:36px;border-radius:var(--border-radius-sm);background-color:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);font-weight:bold;display:flex;align-items:center;justify-content:center;transition:var(--transition-fast);}.btn-qty:hover{background-color:var(--border-color);}