.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;transition:.2s;border:none;text-decoration:none}.btn i{width:16px;height:16px}.btn.disabled,.btn:disabled{opacity:.6;cursor:not-allowed;pointer-events:none}.btn-primary{background:linear-gradient(135deg,var(--primary-accent) 0,var(--primary-accent-dark) 100%);color:#fff;box-shadow:0 3px 10px rgba(var(--primary-accent-rgb),.25)}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover) 0,#1d4ed8 100%);transform:translateY(-1px);box-shadow:0 5px 16px rgba(var(--primary-accent-rgb),.35)}.btn-secondary{background:var(--bg-element);color:var(--text-secondary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-sidebar);color:var(--text-main);border-color:var(--primary-accent)}.btn-outline{background:0 0;border:1px solid var(--border-color);color:var(--text-secondary)}.btn-outline:hover{border-color:var(--primary-accent);color:var(--primary-accent);background:var(--bg-element)}.btn-sm{padding:6px 12px;border-radius:6px;font-size:.85rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:.2s;height:32px}.btn-cancel{background:0 0;border:1px solid var(--border-color);padding:10px 20px;border-radius:8px;cursor:pointer;font-weight:600;color:var(--text-secondary)}.btn-cancel:hover{background:var(--bg-element);color:var(--text-primary)}.btn-build{background:linear-gradient(135deg,#9333ea 0,#7c3aed 100%);color:#fff;box-shadow:0 3px 10px rgba(147,51,234,.25)}.btn-build:hover{background:linear-gradient(135deg,#7c3aed 0,#6d28d9 100%);transform:translateY(-1px);box-shadow:0 5px 16px rgba(147,51,234,.35)}