diff --git a/packages/sigpro/sigpro_ui.js b/packages/sigpro/sigpro_ui.js
new file mode 100644
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+++ b/packages/sigpro/sigpro_ui.js
@@ -0,0 +1,140 @@
+/**
+ * SigPro UI - Complete daisyUI v5 & Tailwind v4 Plugin
+ * @author Gemini & User
+ */
+(() => {
+  if (!window.$use) return console.error("[SigPro UI] Fatal: Core not found.");
+
+  const ui = {};
+
+  // --- HELPERS ---
+  const parseClass = (base, extra) => {
+    if (typeof extra === 'function') return () => `${base} ${extra() || ''}`;
+    return `${base} ${extra || ''}`;
+  };
+
+  // --- TYPE DEFINITIONS ---
+  /** @typedef {Object} BaseProps @property {string|Function} [$class] @property {string} [class] */
+  /** @typedef {BaseProps & { $loading?: Function, $disabled?: Function, icon?: any, badge?: string, badgeClass?: string }} ButtonProps */
+  /** @typedef {BaseProps & { label?: string, tip?: string, $value?: Function, $error?: Function }} InputProps */
+  /** @typedef {BaseProps & { items: Array<{label: any, icon?: any, onclick?: Function, active?: any}> }} MenuProps */
+  /** @typedef {BaseProps & { id: string, $open: Function, content: any, side: any }} DrawerProps */
+  /** @typedef {BaseProps & { title: string, $open: Function }} ModalProps */
+  /** @typedef {BaseProps & { title: any, name?: string, open?: boolean }} AccordionProps */
+
+  // --- COMPONENTS ---
+
+  /** _button @param {ButtonProps & HTMLButtonElement} p @param {any} [c] */
+  ui._button = (p, c) => button({
+    ...p,
+    class: parseClass('btn', p.$class || p.class),
+    $disabled: () => p.$disabled?.() || p.$loading?.()
+  }, [
+    () => p.$loading?.() ? span({ class: 'loading loading-spinner' }) : null,
+    p.icon && span({ class: 'mr-1' }, p.icon),
+    c,
+    p.badge && span({ class: `badge ${p.badgeClass || ''}` }, p.badge)
+  ]);
+
+  /** _input @param {InputProps & HTMLInputElement} p */
+  ui._input = (p) => label({ class: 'fieldset-label flex flex-col gap-1' }, [
+    p.label && div({ class: 'flex items-center gap-2' }, [
+      span({}, p.label),
+      p.tip && div({ class: 'tooltip tooltip-right', 'data-tip': p.tip }, span({ class: 'badge badge-ghost badge-xs' }, '?'))
+    ]),
+    $$('input', { ...p, class: parseClass('input input-bordered w-full', p.$class || p.class), $value: p.$value }),
+    () => p.$error?.() ? span({ class: 'text-error text-xs' }, p.$error()) : null
+  ]);
+
+  /** _select @param {InputProps & {options: Array<{label:string, value:any}>}} p */
+  ui._select = (p) => label({ class: 'fieldset-label flex flex-col gap-1' }, [
+    p.label && span({}, p.label),
+    select({ 
+      ...p, 
+      class: parseClass('select select-bordered', p.$class || p.class),
+      onchange: (e) => p.$value?.(e.target.value)
+    }, (p.options || []).map(o => $$('option', { value: o.value, selected: o.value === p.$value?.() }, o.label)))
+  ]);
+
+  /** _checkbox @param {InputProps} p */
+  ui._checkbox = (p) => label({ class: 'label cursor-pointer justify-start gap-3' }, [
+    $$('input', { type: 'checkbox', ...p, class: parseClass('checkbox', p.$class || p.class), $checked: p.$value }),
+    p.label && span({ class: 'label-text' }, p.label)
+  ]);
+
+  /** _radio @param {InputProps & {name: string, value: any}} p */
+  ui._radio = (p) => label({ class: 'label cursor-pointer justify-start gap-3' }, [
+    $$('input', { type: 'radio', ...p, class: parseClass('radio', p.$class || p.class), $checked: () => p.$value?.() === p.value, onclick: () => p.$value?.(p.value) }),
+    p.label && span({ class: 'label-text' }, p.label)
+  ]);
+
+  /** _range @param {InputProps & {min?:number, max?:number, step?:number}} p */
+  ui._range = (p) => div({ class: 'flex flex-col gap-2' }, [
+    p.label && span({ class: 'label-text' }, p.label),
+    $$('input', { type: 'range', ...p, class: parseClass('range', p.$class || p.class), $value: p.$value })
+  ]);
+
+  /** _modal @param {ModalProps} p @param {any} c */
+  ui._modal = (p, c) => _$(() => p.$open() ? dialog({ class: 'modal modal-open' }, [
+    div({ class: 'modal-box' }, [
+      p.title && h3({ class: 'text-lg font-bold mb-4' }, p.title),
+      c,
+      div({ class: 'modal-action' }, _button({ onclick: () => p.$open(false) }, "Cerrar"))
+    ]),
+    form({ method: 'dialog', class: 'modal-backdrop', onclick: () => p.$open(false) }, button("close"))
+  ]) : null);
+
+  /** _dropdown @param {BaseProps & {label: any}} p @param {any} c (Usually a _menu) */
+  ui._dropdown = (p, c) => div({ ...p, class: parseClass('dropdown', p.$class || p.class) }, [
+    div({ tabindex: 0, role: 'button', class: 'btn m-1' }, p.label),
+    div({ tabindex: 0, class: 'dropdown-content z-[1] menu p-2 shadow bg-base-100 rounded-box w-52' }, c)
+  ]);
+
+  /** _accordion @param {AccordionProps} p @param {any} c */
+  ui._accordion = (p, c) => div({ class: 'collapse collapse-arrow bg-base-200 mb-2' }, [
+    $$('input', { type: p.name ? 'radio' : 'checkbox', name: p.name, checked: p.open }),
+    div({ class: 'collapse-title text-xl font-medium' }, p.title),
+    div({ class: 'collapse-content' }, c)
+  ]);
+
+  /** _tabs @param {BaseProps & {items: Array<{label:string, active:any, onclick:Function}>}} p */
+  ui._tabs = (p) => div({ role: 'tablist', class: parseClass('tabs tabs-lifted', p.$class || p.class) }, 
+    (p.items || []).map(it => a({ 
+      role: 'tab', 
+      class: () => `tab ${ (typeof it.active === 'function' ? it.active() : it.active) ? 'tab-active' : '' }`,
+      onclick: it.onclick
+    }, it.label))
+  );
+
+  /** _badge @param {BaseProps} p @param {any} c */
+  ui._badge = (p, c) => span({ ...p, class: parseClass('badge', p.$class || p.class) }, c);
+
+  /** _tooltip @param {BaseProps & {tip: string}} p @param {any} c */
+  ui._tooltip = (p, c) => div({ ...p, class: parseClass('tooltip', p.$class || p.class), 'data-tip': p.tip }, c);
+
+  /** _navbar @param {BaseProps} p @param {any} c */
+  ui._navbar = (p, c) => div({ ...p, class: parseClass('navbar bg-base-100 shadow-sm px-4', p.$class || p.class) }, c);
+
+  /** _menu @param {MenuProps} p */
+  ui._menu = (p) => ul({ ...p, class: parseClass('menu bg-base-200 rounded-box', p.$class || p.class) }, 
+    (p.items || []).map(it => li({}, a({ class: () => (typeof it.active === 'function' ? it.active() : it.active) ? 'active' : '', onclick: it.onclick }, [it.icon && span({class:'mr-2'}, it.icon), it.label])))
+  );
+
+  /** _drawer @param {DrawerProps} p */
+  ui._drawer = (p) => div({ class: 'drawer' }, [
+    $$('input', { id: p.id, type: 'checkbox', class: 'drawer-toggle', $checked: p.$open }),
+    div({ class: 'drawer-content' }, p.content),
+    div({ class: 'drawer-side' }, [
+      label({ for: p.id, class: 'drawer-overlay', onclick: () => p.$open?.(false) }),
+      div({ class: 'min-h-full bg-base-200 w-80' }, p.side)
+    ])
+  ]);
+
+  /** _fieldset @param {BaseProps & {legend?: string}} p @param {any} c */
+  ui._fieldset = (p, c) => fieldset({ ...p, class: parseClass('fieldset bg-base-200 border border-base-300 p-4 rounded-lg', p.$class || p.class) }, [
+    p.legend && legend({ class: 'fieldset-legend font-bold' }, p.legend),
+    c
+  ]);
+
+  window.$use("Professional-UI-v5", ui);
+})();