.btn{justify-content:center;align-items:center;gap:var(--space-sm);min-height:var(--control-height);border-radius:var(--radius-control);cursor:pointer;text-align:center;white-space:normal;overflow-wrap:anywhere;max-width:100%;transition:background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast), box-shadow var(--motion-fast);border:1px solid #0000;font-family:inherit;font-weight:650;line-height:1.5;display:inline-flex}.btn-sm{padding:8px 14px;font-size:13px}.btn-md{padding:10px 18px;font-size:14px}.btn-lg{min-height:var(--control-height-lg);padding:12px 24px;font-size:16px}.btn-primary{background:var(--color-primary);color:var(--color-on-dark);box-shadow:var(--shadow-sm)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border-color:var(--color-control-border)}.btn-secondary:hover:not(:disabled){background:var(--color-surface-hover);border-color:var(--color-primary)}.btn-success{background:var(--color-success);color:var(--color-on-dark)}.btn-danger{background:var(--color-danger);color:var(--color-on-dark)}.btn-success:hover:not(:disabled),.btn-danger:hover:not(:disabled){filter:brightness(.92)}.btn-outline{background:var(--color-surface);color:var(--color-primary);border-color:var(--color-primary)}.btn-outline:hover:not(:disabled){background:var(--color-primary-soft)}.btn-ghost{color:var(--color-text);background:0 0}.btn-ghost:hover:not(:disabled){background:var(--color-surface-hover)}.btn:focus-visible{outline:3px solid var(--color-primary);outline-offset:3px}.btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none}.btn[aria-busy=true]{cursor:progress}.btn-full{width:100%}.btn-link,.btn-link:visited{color:var(--color-text);text-decoration:none}.btn-link:hover{color:var(--color-text);background:var(--color-surface-hover);border-color:var(--color-primary)}.btn-spinner{border:2px solid;border-right-color:#0000;border-radius:50%;flex-shrink:0;width:1em;height:1em;animation:.8s linear infinite button-spin}@keyframes button-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.btn{transition:none}.btn-spinner{animation:none}}.input-group{flex-direction:column;flex:1;gap:6px;width:100%;min-width:0;display:flex}.input-label{color:var(--color-text);font-size:14px;font-weight:600}.input-wrapper{align-items:center;width:100%;min-width:0;display:flex;position:relative}.input-icon{color:var(--color-text-muted);pointer-events:none;position:absolute;left:14px}.input{width:100%;min-width:0;min-height:var(--control-height);border:1px solid var(--color-control-border);border-radius:var(--radius-control);background:var(--color-surface);color:var(--color-text);font:inherit;box-sizing:border-box;transition:border-color var(--motion-fast), box-shadow var(--motion-fast);padding:10px 14px;font-size:15px}.input:focus{outline:2px solid var(--color-primary);outline-offset:2px;border-color:var(--color-primary);box-shadow:var(--focus-ring)}.input::placeholder{color:var(--color-placeholder)}.input:disabled{background:var(--color-surface-muted);color:var(--color-text-muted);cursor:not-allowed}.input[aria-invalid=true]{border-color:var(--color-danger)}.input-icon+.input{padding-left:42px}.input-error{color:var(--color-danger);font-size:13px;font-weight:500}@media (width<=639px){.input{font-size:16px}}@media (prefers-reduced-motion:reduce){.input{transition:none}}