.btn{border-radius:var(--border-radius-full);cursor:pointer;transition:all var(--transition-fast);border:none;outline:none;justify-content:center;align-items:center;font-family:Inter,sans-serif;font-weight:500;display:inline-flex}.btn:active{transform:scale(.96)}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.btn-md{padding:.75rem 1.5rem;font-size:1rem}.btn-lg{padding:1rem 2rem;font-size:1.125rem}.btn-full{width:100%}.btn-primary{background-color:var(--brand-primary);color:#fff;box-shadow:0 4px 14px #3b82f663}.btn-primary:hover{background-color:var(--brand-primary-hover);transform:translateY(-1px);box-shadow:0 6px 20px #3b82f63b}.btn-secondary{background-color:var(--bg-surface-elevated);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:#ffffff1a}.btn-success{background-color:var(--status-success);color:#fff}.btn-success:hover{background-color:#059669}.btn-warning{background-color:var(--status-warning);color:#fff}.btn-warning:hover{background-color:#d97706}.btn-danger{background-color:var(--status-danger);color:#fff}.btn-danger:hover{background-color:#dc2626}.btn-shame{background-color:var(--status-shame);color:var(--text-primary);border:1px solid var(--status-shame-border)}.btn-shame:hover{background-color:#111}