/* Obra T25010 — diseño v3 (móvil): herramienta de campo + app de mensajes.
   Diseño v4 (escritorio ≥1100 px): bloque al final del archivo.
   Tema según el teléfono (prefers-color-scheme) con opción manual (data-theme).
   Claro pensado para el sol: texto casi negro, bordes visibles, objetivos ≥48 px.
   Azul = lo mío (burbuja propia, enviar). Amarillo de seguridad = el DATO clave y las hojas. */

/* ---------- tokens: CLARO (por defecto) ---------- */
:root {
  color-scheme: light;
  --fondo: #e8ecf1;          /* "papel tapiz" del chat */
  --barra: #ffffff;
  --sup: #ffffff;            /* burbuja del agente, tarjetas, panel */
  --sup-2: #f1f4f8;
  --sup-3: #e2e7ee;
  --borde: #c9d2de;
  --borde-2: #9aa8bb;
  --txt: #0f172a;
  --txt-2: #334155;
  --txt-3: #475569;
  --yo: #0b5cad;             /* burbuja propia: blanco sobre azul 6.7:1 */
  --yo-hover: #094c90;
  --yo-txt: #ffffff;
  --yo-hora: #d6e6f7;
  --dato: #ffcc00;           /* tarjeta DATO: tinta #111 sobre amarillo 12.5:1 */
  --dato-tinta: #111111;
  --dato-borde: #c99a00;
  --chip-txt: #7a4a00;       /* chips de hoja: 6.8:1 */
  --chip-fondo: #fff4c2;
  --chip-borde: #d9a400;
  --acento: #f5b301;
  --acento-tinta: #1b1400;
  --ok: #047857;
  --error: #b91c1c;
  --error-suave: #fde8e8;
  --foco: #0f172a;
  --sombra: 0 10px 30px rgba(15, 23, 42, .18);
  --sombra-s: 0 1px 2px rgba(15, 23, 42, .12);
  --sans: "Inter", "InterVariable", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, monospace;
  --r: 16px;
  --r-s: 10px;
  --ancho: 780px;
  --z-menu: 30;
  --z-panel: 20;
  --z-velo: 15;
  --z-visor: 50;
  --z-toast: 60;
}
/* ---------- tokens: OSCURO (si el teléfono está en oscuro y no se eligió claro, o elegido a mano) ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --fondo: #0b1220;
    --barra: #111b2e;
    --sup: #1a2539;
    --sup-2: #222f47;
    --sup-3: #2c3a55;
    --borde: #2c3a55;
    --borde-2: #4a5b7a;
    --txt: #e8edf5;
    --txt-2: #b6c2d4;
    --txt-3: #97a6bd;
    --yo: #1a62d0;
    --yo-hover: #2470e0;
    --yo-txt: #ffffff;
    --yo-hora: #cfe0fb;
    --dato: #f5b301;
    --dato-tinta: #1b1400;
    --dato-borde: #ffcc33;
    --chip-txt: #ffd54a;
    --chip-fondo: rgba(245, 179, 1, .14);
    --chip-borde: rgba(245, 179, 1, .45);
    --ok: #34d399;
    --error: #f87171;
    --error-suave: rgba(248, 113, 113, .12);
    --foco: #ffd54a;
    --sombra: 0 10px 30px rgba(0, 0, 0, .5);
    --sombra-s: 0 1px 2px rgba(0, 0, 0, .4);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --fondo: #0b1220;
  --barra: #111b2e;
  --sup: #1a2539;
  --sup-2: #222f47;
  --sup-3: #2c3a55;
  --borde: #2c3a55;
  --borde-2: #4a5b7a;
  --txt: #e8edf5;
  --txt-2: #b6c2d4;
  --txt-3: #97a6bd;
  --yo: #1a62d0;
  --yo-hover: #2470e0;
  --yo-txt: #ffffff;
  --yo-hora: #cfe0fb;
  --dato: #f5b301;
  --dato-tinta: #1b1400;
  --dato-borde: #ffcc33;
  --chip-txt: #ffd54a;
  --chip-fondo: rgba(245, 179, 1, .14);
  --chip-borde: rgba(245, 179, 1, .45);
  --ok: #34d399;
  --error: #f87171;
  --error-suave: rgba(248, 113, 113, .12);
  --foco: #ffd54a;
  --sombra: 0 10px 30px rgba(0, 0, 0, .5);
  --sombra-s: 0 1px 2px rgba(0, 0, 0, .4);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--fondo);
  color: var(--txt);
  font: 17px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
svg { width: 22px; height: 22px; flex: none; }
.mono { font-family: var(--mono); font-feature-settings: "zero" 0; letter-spacing: -.01em; }
.sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--foco); outline-offset: 2px; border-radius: 10px; }
.saltar { position: absolute; left: 8px; top: -60px; z-index: 100; background: var(--acento); color: var(--acento-tinta);
  padding: 12px 16px; border-radius: 10px; font-weight: 700; text-decoration: none; }
.saltar:focus { top: 8px; }

/* ---------- botones base ---------- */
.ico {
  display: inline-grid; place-items: center; flex: none;
  width: 48px; height: 48px; border-radius: 50%;
  border: 0; background: transparent; color: var(--txt-2);
  transition: background-color .15s, color .15s;
}
.ico:hover { background: var(--sup-2); color: var(--txt); }
.ico:active { background: var(--sup-3); }
.ico:disabled { opacity: .35; background: transparent; }
.btn-pri {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 22px; border: 0; border-radius: 14px;
  background: var(--yo); color: var(--yo-txt); font-weight: 700; letter-spacing: .01em;
  transition: background-color .15s;
}
.btn-pri:hover { background: var(--yo-hover); }
.btn-pri:disabled { opacity: .6; }
.btn-sec {
  min-height: 48px; padding: 0 16px; border-radius: 12px; font-size: 16px; font-weight: 650;
  border: 1px solid var(--borde-2); background: transparent; color: var(--txt);
  transition: background-color .15s;
}
.btn-sec:hover { background: var(--sup-2); }

/* ---------- logo ---------- */
.logo {
  display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: var(--dato); color: var(--dato-tinta); flex: none; border: 1px solid var(--dato-borde);
}
.logo svg { width: 22px; height: 22px; }
.logo-grande { width: 56px; height: 56px; border-radius: 16px; }
.logo-grande svg { width: 30px; height: 30px; }

/* =====================================================================
   LOGIN
   ===================================================================== */
.login-body { min-height: 100dvh; background: var(--fondo); }
.entrar { min-height: 100dvh; display: grid; place-items: center; padding: 24px 16px calc(24px + env(safe-area-inset-bottom)); }
.entrar-tarjeta {
  width: 100%; max-width: 420px; display: flex; flex-direction: column;
  background: var(--sup); border: 1px solid var(--borde); border-radius: 22px;
  padding: 28px 22px 22px; box-shadow: var(--sombra);
}
.entrar-marca { display: flex; gap: 14px; align-items: center; margin-bottom: 28px; }
.entrar-marca h1 { margin: 0; font-size: 19px; line-height: 1.3; font-weight: 750; letter-spacing: -.01em; }
.entrar-marca p { margin: 3px 0 0; color: var(--txt-2); font-size: 15px; }
.etiqueta { font-size: 15px; font-weight: 650; color: var(--txt-2); margin-bottom: 8px; }
.campo-clave { position: relative; display: flex; }
.campo-clave input {
  flex: 1; min-height: 56px; padding: 0 56px 0 16px; border-radius: 14px;
  background: var(--sup-2); border: 2px solid var(--borde-2); font-size: 18px;
}
.campo-clave input:focus { outline: none; border-color: var(--yo); }
.ver-clave {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border: 0; border-radius: 12px; background: transparent; color: var(--txt-3);
  display: grid; place-items: center;
}
.ver-clave:hover, .ver-clave[aria-pressed="true"] { color: var(--txt); }
.entrar .error { min-height: 24px; margin: 8px 0 6px; color: var(--error); font-size: 15px; font-weight: 600; }
.entrar .btn-pri { width: 100%; font-size: 18px; }
.entrar-pie { margin: 16px 0 0; text-align: center; color: var(--txt-3); font-size: 14px; }

/* =====================================================================
   APP
   ===================================================================== */
.app-body { overflow: hidden; }
.app { height: 100vh; height: 100dvh; display: grid; grid-template-rows: auto 1fr; grid-template-columns: minmax(0, 1fr); }  /* v5: sin esto la cabecera empujaba el ancho a ~494 px en 440 px */

/* ---------- cabecera tipo app de mensajes ---------- */
.barra {
  display: flex; align-items: center; gap: 6px; position: relative; z-index: 1;
  padding: calc(6px + env(safe-area-inset-top)) max(6px, env(safe-area-inset-right)) 6px max(12px, env(safe-area-inset-left));
  background: var(--barra); border-bottom: 1px solid var(--borde); box-shadow: var(--sombra-s);
}
/* con un menú abierto la cabecera pasa por encima del panel de hojas y del chat (si no, el menú queda tapado) */
.barra:has([aria-expanded="true"]) { z-index: calc(var(--z-menu) + 1); }
.marca-txt { display: flex; flex-direction: column; min-width: 0; flex: 1; margin-left: 4px; }
.marca-t { margin: 0; font-weight: 750; font-size: 18px; line-height: 1.2; letter-spacing: -.01em; white-space: nowrap; }
.marca-s { font-size: 13px; color: var(--txt-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* selector de área: píldora compacta que abre un menú */
.menu-caja { position: relative; flex: none; }
.pildora {
  display: inline-flex; align-items: center; gap: 4px; min-height: 48px; padding: 0 10px 0 14px;
  border-radius: 999px; border: 1px solid var(--borde-2); background: var(--sup-2); color: var(--txt);
  font-size: 16px; font-weight: 700; transition: background-color .15s, border-color .15s;
}
.pildora:hover { background: var(--sup-3); }
.pildora[aria-expanded="true"] { border-color: var(--txt); }
.pildora-et { font-weight: 500; color: var(--txt-3); font-size: 14px; }
.pildora svg { width: 18px; height: 18px; color: var(--txt-3); }

.menu {
  position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%); z-index: var(--z-menu);
  min-width: 220px; padding: 6px; border-radius: 16px;
  background: var(--sup); border: 1px solid var(--borde-2); box-shadow: var(--sombra);
  animation: aparece .14s ease-out;
}
.menu-der { left: auto; right: 0; transform: none; min-width: 250px; }
.menu [role^="menuitem"] {
  display: flex; align-items: center; gap: 12px; width: 100%; min-height: 48px; padding: 0 14px;
  border: 0; border-radius: 10px; background: transparent; text-align: left; font-size: 17px; font-weight: 550;
}
.menu [role^="menuitem"]:hover, .menu [role^="menuitem"]:focus-visible { background: var(--sup-2); }
.menu [role^="menuitem"]:focus-visible { outline-offset: -3px; }
.menu [role^="menuitem"] svg { color: var(--txt-3); width: 20px; height: 20px; }
.menu [aria-checked="true"] { background: var(--sup-2); font-weight: 750; }
.menu [aria-checked="true"] svg { color: var(--txt); }
.menu .marca-ok { visibility: hidden; }
.menu [aria-checked="true"] .marca-ok { visibility: visible; color: var(--yo); }
.menu-sep { height: 1px; margin: 6px 4px; background: var(--borde); }
.menu-tit { padding: 6px 14px 2px; font-size: 13px; font-weight: 700; color: var(--txt-3); text-transform: uppercase; letter-spacing: .06em; }

.cuerpo-app { min-height: 0; display: grid; grid-template-columns: 1fr; position: relative; }

/* ---------- chat ---------- */
.chat { min-height: 0; display: flex; flex-direction: column; }
.mensajes {
  flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain;
  padding: 16px 12px 8px; scroll-behavior: smooth;
}
.mensajes > * { max-width: var(--ancho); margin-left: auto; margin-right: auto; }

/* estado vacío */
.vacio { padding: 5vh 4px 12px; text-align: center; }
.vacio-logo {
  display: inline-grid; place-items: center; width: 60px; height: 60px; border-radius: 18px;
  background: var(--dato); color: var(--dato-tinta); border: 1px solid var(--dato-borde); margin-bottom: 14px;
}
.vacio-logo svg { width: 30px; height: 30px; }
.vacio h2 { margin: 0 0 6px; font-size: 23px; line-height: 1.25; letter-spacing: -.02em; font-weight: 750; }
.vacio p { margin: 0 auto 20px; color: var(--txt-2); max-width: 430px; font-size: 16px; }
.ejemplos { display: grid; gap: 8px; text-align: left; }
.ejemplo {
  display: flex; align-items: center; gap: 12px; min-height: 56px; padding: 12px 14px 12px 16px;
  border-radius: 18px 18px 18px 6px; border: 1px solid var(--borde); background: var(--sup);
  font-size: 16px; line-height: 1.4; color: var(--txt); box-shadow: var(--sombra-s);
  transition: border-color .15s, background-color .15s;
}
.ejemplo span { flex: 1; }
.ejemplo svg { color: var(--txt-3); width: 20px; height: 20px; }
.ejemplo:hover { border-color: var(--borde-2); background: var(--sup-2); }

/* mensajes: burbujas */
.msg { margin-bottom: 14px; animation: entra .18s ease-out; }
@keyframes entra { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
@keyframes aparece { from { opacity: 0; } }
.burbuja { position: relative; overflow-wrap: anywhere; box-shadow: var(--sombra-s); }
.hora { display: block; text-align: right; font-size: 12px; line-height: 1; margin-top: 4px; color: var(--txt-3); font-variant-numeric: tabular-nums; }

.msg.yo { display: flex; justify-content: flex-end; padding-left: 12%; }
.msg.yo .burbuja {
  max-width: 100%; padding: 9px 14px 7px; border-radius: 20px 20px 6px 20px;
  background: var(--yo); color: var(--yo-txt); white-space: pre-wrap; font-size: 17px;
}
.msg.yo .hora { color: var(--yo-hora); }

.msg.bot { display: flex; flex-direction: column; align-items: flex-start; padding-right: 6%; }
.msg.bot .burbuja {
  width: 100%; max-width: 100%; padding: 10px 14px 8px; border-radius: 20px 20px 20px 6px;
  background: var(--sup); border: 1px solid var(--borde);
}
.msg.error {
  display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--r);
  background: var(--error-suave); color: var(--error); border: 1px solid var(--error);
  font-size: 16px; font-weight: 550;
}
.msg.error svg { margin-top: 1px; }

/* DATO clave: la tarjeta grande arriba de la respuesta */
.dato:empty { display: none; }
.dato-tarjeta {
  display: flex; flex-direction: column; gap: 4px;
  margin: 2px 0 10px; padding: 10px 14px 12px; border-radius: 14px;
  background: var(--dato); color: var(--dato-tinta); border: 2px solid var(--dato-borde);
}
.dato-et {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em;
}
.dato-et svg { width: 15px; height: 15px; }
.dato-val {
  font-family: var(--mono); font-weight: 800; font-size: clamp(24px, 7vw, 32px); line-height: 1.15;
  letter-spacing: -.02em; overflow-wrap: anywhere;
}
.dato-fuente { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-top: 4px; font-size: 14px; font-weight: 650; }
.dato-fuente .ref { color: var(--dato-tinta); background: rgba(255, 255, 255, .55); border-color: rgba(0, 0, 0, .35); }
.dato-fuente .ref:hover { background: rgba(255, 255, 255, .8); }

/* pasos de herramientas: una línea plegable */
.estado:empty { display: none; }
.pasos { margin: 0 0 8px; }
.pasos summary {
  list-style: none; display: inline-flex; align-items: center; gap: 6px;
  min-height: 48px; padding: 4px 14px 4px 12px; border-radius: 999px;
  color: var(--txt-2); font-size: 14.5px; font-weight: 550; cursor: pointer; user-select: none;
  border: 1px solid var(--borde); background: var(--sup-2);
}
.pasos summary::-webkit-details-marker { display: none; }
.pasos summary:hover { color: var(--txt); border-color: var(--borde-2); }
.pasos summary .chev { width: 18px; height: 18px; transition: transform .2s; }
.pasos[open] summary .chev { transform: rotate(180deg); }
.pasos summary .ok { width: 17px; height: 17px; color: var(--ok); }
.pasos ol {
  margin: 8px 0 4px; padding: 2px 0 2px 14px; list-style: none;
  border-left: 3px solid var(--borde); font-size: 14.5px; color: var(--txt-2);
}
.pasos li { padding: 3px 0; overflow-wrap: anywhere; }
.pasos li .mono { color: var(--txt); font-weight: 650; }

/* pensando */
.pensando { display: flex; align-items: center; gap: 10px; min-height: 36px; color: var(--txt-2); font-size: 16px; }
.puntos { display: inline-flex; gap: 5px; }
.puntos i { width: 8px; height: 8px; border-radius: 50%; background: var(--txt-3); animation: punto 1.2s infinite ease-in-out; }
.puntos i:nth-child(2) { animation-delay: .15s; }
.puntos i:nth-child(3) { animation-delay: .3s; }
@keyframes punto { 0%, 80%, 100% { opacity: .3; transform: scale(.8); } 40% { opacity: 1; transform: scale(1); } }
.pensando .paso-actual { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.cursor::after { content: ""; display: inline-block; width: 9px; height: 1.05em; margin-left: 2px; vertical-align: -2px;
  background: var(--txt-3); border-radius: 2px; animation: parpadeo 1s steps(2) infinite; }
@keyframes parpadeo { 50% { opacity: 0; } }

/* texto del agente (markdown) */
.md { font-size: 17px; line-height: 1.55; }
.md:empty { display: none; }
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p { margin: 0 0 10px; }
.md h3, .md h4 { margin: 14px 0 6px; font-size: 17px; line-height: 1.35; font-weight: 750; }
.md h3 { font-size: 18px; }
.md ul, .md ol { margin: 0 0 10px; padding-left: 22px; }
.md li { margin: 4px 0; }
.md li::marker { color: var(--txt-3); }
.md strong { font-weight: 750; color: var(--txt); }
.md em { color: var(--txt-2); }
.md code { font-family: var(--mono); font-size: .9em; padding: 1px 5px; border-radius: 5px; background: var(--sup-2); border: 1px solid var(--borde); }
.md hr { border: 0; border-top: 1px solid var(--borde); margin: 14px 0; }
.md blockquote { margin: 0 0 10px; padding: 2px 0 2px 12px; border-left: 3px solid var(--chip-borde); color: var(--txt-2); }
.md .tabla { overflow-x: auto; margin: 0 0 12px; border: 1px solid var(--borde); border-radius: var(--r-s); }
.md table { border-collapse: collapse; width: 100%; font-size: 15px; }
.md th, .md td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--borde); vertical-align: top; }
.md th { background: var(--sup-2); font-weight: 700; color: var(--txt-2); white-space: nowrap; }
.md tr:last-child td { border-bottom: 0; }

/* chip de hoja dentro del texto (≥40 px de alto) */
.ref {
  display: inline-flex; align-items: center; gap: 5px; vertical-align: middle;
  min-height: 40px; padding: 0 11px 0 9px; margin: 2px 1px; border-radius: 10px;
  font-family: var(--mono); font-size: 15.5px; font-weight: 750; line-height: 1;
  color: var(--chip-txt); background: var(--chip-fondo); border: 1.5px solid var(--chip-borde);
  transition: background-color .15s;
}
.ref:hover { background: color-mix(in srgb, var(--acento) 30%, var(--chip-fondo)); }
.ref .ref-i { width: 16px; height: 16px; }
.ref .r { font-weight: 550; }

/* ---------- DESCUBRIR (v5, 10/06/2026): "Lo que hay" por disciplina + preguntas sugeridas. Móvil primero (440 px) ---------- */
.descubre:empty, .sugeridas:empty { display: none; }
.descubre { margin-top: 10px; }
.dsc { border: 1px solid var(--borde-2); border-radius: 14px; background: var(--sup-2); overflow: hidden; }
.dsc > summary, .dsc-g > summary { list-style: none; cursor: pointer; }
.dsc > summary::-webkit-details-marker, .dsc-g > summary::-webkit-details-marker { display: none; }
.dsc-cab {
  display: grid; grid-template-columns: auto 1fr auto; grid-template-areas: "i t c" "i r c";
  align-items: center; column-gap: 10px; min-height: 56px; padding: 10px 12px;
}
.dsc-cab .dsc-i { grid-area: i; width: 22px; height: 22px; color: var(--chip-txt); }
.dsc-t { grid-area: t; font-weight: 750; font-size: 16px; line-height: 1.25; }
.dsc-res { grid-area: r; font-size: 13.5px; line-height: 1.35; color: var(--txt-3); }
.dsc-cab .chev, .dsc-g > summary .chev { grid-area: c; width: 20px; height: 20px; color: var(--txt-3); transition: transform .15s; }
.dsc[open] > summary .chev, .dsc-g[open] > summary .chev { transform: rotate(180deg); }
.dsc-cuerpo { padding: 0 8px 8px; }
.dsc-ent { margin: 0 4px 8px; font-size: 13px; color: var(--txt-3); overflow-wrap: anywhere; }
.dsc-g { border-top: 1px solid var(--borde); }
.dsc-g > summary { display: flex; align-items: center; gap: 8px; min-height: 48px; padding: 4px 6px; }
.dsc-gn { flex: 1; min-width: 0; font-weight: 700; font-size: 15.5px; line-height: 1.3; }
.dsc-n {
  min-width: 28px; padding: 2px 8px; border-radius: 999px; text-align: center; font-size: 13px; font-weight: 700;
  font-variant-numeric: tabular-nums; background: var(--sup-3); color: var(--txt-2);
}
.dsc-lista { list-style: none; margin: 0 0 6px; padding: 0; display: grid; gap: 6px; }
.dsc-h {
  display: flex; flex-direction: column; gap: 3px; width: 100%; min-height: 52px; padding: 9px 10px; text-align: left;
  border: 1px solid var(--borde); border-radius: 12px; background: var(--sup); color: var(--txt);
  transition: border-color .15s, background-color .15s;
}
.dsc-h:hover { border-color: var(--borde-2); }
.dsc-l1 { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.dsc-num { font-weight: 750; font-size: 15.5px; color: var(--chip-txt); }
.dsc-rev { font-size: 13.5px; color: var(--txt-3); font-variant-numeric: tabular-nums; }
.dsc-tag {
  padding: 1px 7px; border-radius: 6px; font-size: 12px; font-weight: 700; line-height: 1.5;
  background: var(--sup-3); color: var(--txt-2);
}
.dsc-sf { background: var(--chip-fondo); color: var(--chip-txt); border: 1px solid var(--chip-borde); }
.dsc-ir { width: 16px; height: 16px; margin-left: auto; color: var(--txt-3); }
.dsc-tit { font-size: 14.5px; line-height: 1.35; color: var(--txt-2); }
.dsc-donde { font-size: 13px; line-height: 1.35; color: var(--txt-3); }
.dsc-snip { font-size: 13.5px; line-height: 1.4; color: var(--txt-2); overflow-wrap: anywhere; font-family: var(--mono); }
.dsc-snip mark { background: var(--chip-fondo); color: var(--chip-txt); border-radius: 3px; padding: 0 2px; font-weight: 700; }
.dsc-mas, .dsc-pie { margin: 4px 6px 6px; font-size: 13.5px; color: var(--txt-3); line-height: 1.4; }
.dsc-pie { border-top: 1px solid var(--borde); padding-top: 8px; margin-top: 2px; }

.sugeridas { margin-top: 12px; }
.sug-t { display: block; font-size: 12.5px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; color: var(--txt-3); margin-bottom: 6px; }
.sug-fila { display: flex; flex-direction: column; gap: 6px; }
.sug {
  display: block; width: 100%; min-height: 48px; padding: 10px 14px; text-align: left;
  border-radius: 14px 14px 14px 4px; border: 1.5px solid var(--yo); background: transparent; color: var(--txt);
  font-size: 15.5px; line-height: 1.35; transition: background-color .15s;
}
.sug:hover { background: color-mix(in srgb, var(--yo) 10%, transparent); }
@media (min-width: 700px) {
  .sug-fila { flex-direction: row; flex-wrap: wrap; }
  .sug { width: auto; max-width: 100%; }
}
@media (min-width: 1100px) {
  .dsc { border-color: var(--borde); }
  .dsc-lista { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
  .dsc-h { min-height: 0; }
  .sug { min-height: 40px; padding: 8px 14px; font-size: 14.5px; }
}

/* hojas como ADJUNTOS dentro de la burbuja */
.adjuntos:empty { display: none; }
.adjuntos { margin-top: 10px; }
.adj-rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; }
.adj-rejilla.uno { grid-template-columns: minmax(0, 340px); }
.adj {
  display: flex; flex-direction: column; min-width: 0; padding: 0; text-align: left; overflow: hidden;
  border: 1px solid var(--borde-2); border-radius: 14px; background: var(--sup-2);
  transition: border-color .15s, background-color .15s;
}
.adj:hover { border-color: var(--txt-3); background: var(--sup-3); }
.adj-img { display: block; position: relative; aspect-ratio: 7 / 5; background: #fff; border-bottom: 1px solid var(--borde); }
.adj-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.adj-img.sin-img { display: grid; place-items: center; background: var(--sup-3); color: var(--txt-3); }
.adj-pie { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px 10px; min-height: 48px; }
.adj-num { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.adj-num .mono { font-weight: 800; font-size: 16px; }
.rev {
  font-family: var(--mono); font-size: 13px; font-weight: 700; padding: 1px 7px; border-radius: 6px;
  background: var(--chip-fondo); color: var(--chip-txt); border: 1px solid var(--chip-borde);
}
.adj-pag { font-size: 13px; color: var(--txt-3); }
.adj-tit { font-size: 14px; line-height: 1.3; color: var(--txt-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.adj-tit:empty { display: none; }
.adj-mas {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; min-height: 48px; padding: 0 16px;
  border-radius: 999px; border: 1px solid var(--borde-2); background: var(--sup-2); color: var(--txt);
  font-size: 15.5px; font-weight: 700;
}
.adj-mas:hover { background: var(--sup-3); }
.adj-mas .chev { width: 18px; height: 18px; }
.adj-mas .arriba { transform: rotate(180deg); }

/* votos del dueño (bien / corregir) debajo de la burbuja */
.votos:empty { display: none; }
.votos { width: 100%; }
.voto-fila { display: flex; align-items: center; gap: 4px; margin-top: 4px; }
.voto {
  display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid transparent; background: transparent; color: var(--txt-3);
  transition: background-color .15s, color .15s, border-color .15s;
}
.voto svg { width: 20px; height: 20px; }
.voto:hover { background: var(--sup); color: var(--txt); }
.voto[aria-pressed="true"] { color: var(--chip-txt); background: var(--chip-fondo); border-color: var(--chip-borde); }
.voto:disabled { opacity: .5; }
.voto-estado { margin-left: 4px; font-size: 14px; color: var(--txt-2); font-weight: 550; }
.corregir {
  margin-top: 4px; padding: 10px 12px; border-radius: var(--r);
  background: var(--sup); border: 2px solid var(--borde-2);
}
.corregir:focus-within { border-color: var(--yo); }
.corregir textarea {
  display: block; width: 100%; min-height: 80px; padding: 2px 0; border: 0; outline: none; resize: vertical;
  background: transparent; font-size: 17px; line-height: 1.45;
}
.corregir textarea::placeholder { color: var(--txt-3); }
.corregir-acc { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.corregir .btn-pri { min-height: 48px; padding: 0 16px; font-size: 16px; border-radius: 12px; }
.corr-guardada {
  margin-top: 4px; padding: 8px 12px; border-left: 4px solid var(--acento); border-radius: 0 var(--r-s) var(--r-s) 0;
  background: var(--chip-fondo); font-size: 16px; white-space: pre-wrap; overflow-wrap: anywhere;
}
.corr-tit { display: block; margin-bottom: 2px; font-size: 13px; font-weight: 750; color: var(--chip-txt); }

/* ---------- caja de escribir (redonda, botón enviar circular) ---------- */
.escribir { padding: 6px 10px calc(8px + env(safe-area-inset-bottom)); background: var(--fondo); }
.caja {
  display: flex; align-items: flex-end; gap: 8px; max-width: var(--ancho); margin: 0 auto;
}
.caja textarea {
  flex: 1; min-width: 0; min-height: 52px; max-height: 168px; padding: 13px 18px; resize: none;
  border-radius: 26px; border: 2px solid var(--borde-2); background: var(--sup); outline: none;
  font-size: 17px; line-height: 1.4; box-shadow: var(--sombra-s);
}
.caja textarea:focus { border-color: var(--yo); }
.caja textarea::placeholder { color: var(--txt-3); }
.enviar {
  flex: none; width: 52px; height: 52px; border-radius: 50%; border: 0; display: grid; place-items: center;
  background: var(--yo); color: var(--yo-txt); box-shadow: var(--sombra-s); transition: background-color .15s;
}
.enviar svg { width: 24px; height: 24px; }
.enviar:hover { background: var(--yo-hover); }
.enviar:disabled { background: var(--sup-3); color: var(--txt-3); }
.nota-pie { max-width: var(--ancho); margin: 4px auto 0; text-align: center; font-size: 13px; color: var(--txt-3); }

/* ---------- panel de hojas (bottom sheet en móvil) ---------- */
.velo { position: fixed; inset: 0; z-index: var(--z-velo); background: rgba(2, 6, 14, .55); animation: aparece .2s; }
.panel {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-panel);
  height: min(86dvh, 760px); display: flex; flex-direction: column;
  background: var(--barra); border: 1px solid var(--borde); border-bottom: 0; border-radius: 22px 22px 0 0;
  box-shadow: var(--sombra); transform: translateY(105%); visibility: hidden;
  transition: transform .26s cubic-bezier(.2, .8, .2, 1), visibility 0s .26s;
  padding-bottom: env(safe-area-inset-bottom);
}
.panel.abierto { transform: none; visibility: visible; transition: transform .26s cubic-bezier(.2, .8, .2, 1); }
.agarre { width: 44px; height: 5px; border-radius: 5px; background: var(--borde-2); margin: 8px auto 2px; }
.panel-cab { display: flex; align-items: center; gap: 10px; padding: 4px 6px 4px 18px; }
.panel-cab h2 { margin: 0; font-size: 19px; font-weight: 750; }
.panel-cuenta { flex: 1; font-size: 14px; color: var(--txt-3); }
.buscador { position: relative; margin: 4px 14px 10px; }
.buscador svg { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--txt-3); width: 20px; height: 20px; pointer-events: none; }
.buscador input {
  width: 100%; min-height: 52px; padding: 0 16px 0 44px; border-radius: 26px;
  border: 2px solid var(--borde-2); background: var(--sup); font-size: 17px;
}
.buscador input:focus { outline: none; border-color: var(--yo); }
.buscador input::placeholder { color: var(--txt-3); }
.lista { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 0 8px 12px; }
.fila {
  width: 100%; display: flex; align-items: center; gap: 12px; padding: 10px; min-height: 64px; text-align: left;
  border: 0; border-radius: 12px; background: transparent; transition: background-color .12s;
}
.fila + .fila { border-top: 1px solid var(--borde); border-radius: 0; }
.fila:hover { background: var(--sup-2); }
.fila .num { flex: none; min-width: 72px; font-family: var(--mono); font-weight: 800; font-size: 16px; }
.t-info { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 2px; }
.t-tit { font-size: 15px; line-height: 1.35; color: var(--txt); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.t-meta { font-size: 13.5px; color: var(--txt-3); }
.t-meta:empty { display: none; }
.fila .frag { font-size: 13.5px; color: var(--txt-3); margin-top: 2px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.fila .frag mark { background: var(--chip-fondo); color: var(--chip-txt); border-radius: 3px; padding: 0 2px; font-weight: 700; }
.aviso { padding: 28px 16px; text-align: center; color: var(--txt-3); font-size: 15px; }
.esqueleto { height: 60px; margin: 6px 4px; border-radius: 12px; background: linear-gradient(90deg, var(--sup) 0%, var(--sup-2) 50%, var(--sup) 100%); background-size: 200% 100%; animation: brillo 1.2s infinite linear; }
@keyframes brillo { to { background-position: -200% 0; } }

/* ---------- piezas solo de escritorio (v4): ocultas en móvil ---------- */
.lateral, .chat-cab, .visor-borde, #vAmpliar, .ejemplo .ej-i { display: none; }
@media (max-width: 400px) {
  .barra { gap: 2px; }
  .marca-s { display: none; }
  .logo { width: 36px; height: 36px; }
  .pildora { padding: 0 6px 0 12px; }
  .pildora-et { display: none; }
  .msg.yo { padding-left: 8%; }
  .msg.bot { padding-right: 0; }
}

/* =====================================================================
   VISOR (siempre oscuro)
   ===================================================================== */
.visor {
  position: fixed; inset: 0; z-index: var(--z-visor); display: flex; flex-direction: column;
  background: #05080f; color: #e8edf5; animation: aparece .18s;
  --sup-2: #1a2539; --sup-3: #222f47; --txt: #e8edf5; --txt-2: #a3b0c5; --foco: #ffd54a;
}
.visor-cab, .visor-pie {
  display: flex; align-items: center; gap: 10px; z-index: 2;
  background: rgba(11, 18, 32, .94); backdrop-filter: blur(8px);
}
.visor-cab { padding: calc(8px + env(safe-area-inset-top)) 12px 8px; border-bottom: 1px solid #1c2740; }
.visor-pie { justify-content: space-between; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); border-top: 1px solid #1c2740; }
.ico-visor { color: #c9d3e3; width: 48px; height: 48px; }
.ico-visor:hover { background: #1a2539; color: #fff; }
.visor-tit { flex: 1; min-width: 0; }
.visor-num { display: flex; align-items: center; gap: 8px; }
.visor-num .mono { font-size: 18px; font-weight: 800; color: #fff; }
.visor .rev { background: rgba(245, 179, 1, .16); color: #ffd54a; border-color: rgba(245, 179, 1, .45); }
.visor-sub { font-size: 14px; color: #a3b0c5; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.btn-pdf {
  display: inline-flex; align-items: center; gap: 6px; min-height: 48px; padding: 0 16px; border-radius: 12px;
  background: #f5b301; color: #1b1400; font-weight: 750; text-decoration: none; font-size: 16px;
}
.btn-pdf:hover { background: #ffc21f; }
.btn-pdf svg { width: 18px; height: 18px; }
.lienzo { position: relative; flex: 1; overflow: hidden; touch-action: none; cursor: grab;
  background: radial-gradient(circle at 50% 50%, #0d1424, #05080f 70%); }
.lienzo:active { cursor: grabbing; }
.lienzo img { position: absolute; left: 0; top: 0; transform-origin: 0 0; user-select: none; -webkit-user-drag: none;
  max-width: none; box-shadow: 0 0 0 1px rgba(255,255,255,.08), 0 20px 60px rgba(0,0,0,.6); background: #fff; }
.cargando { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 12px; color: #a3b0c5; font-size: 15px; pointer-events: none; }
.giro { width: 30px; height: 30px; border-radius: 50%; border: 3px solid #23304a; border-top-color: #f5b301; animation: gira .8s linear infinite; }
@keyframes gira { to { transform: rotate(360deg); } }
.lado {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 1;
  width: 48px; height: 64px; border-radius: 14px; border: 1px solid #2c3a55; display: grid; place-items: center;
  background: rgba(11, 18, 32, .88); color: #e8edf5; backdrop-filter: blur(6px);
}
.lado:hover { background: #1a2539; }
.lado-izq { left: 10px; } .lado-der { right: 10px; }
.lado svg { width: 26px; height: 26px; }
.grupo { display: flex; align-items: center; gap: 4px; }
.pag { min-width: 52px; text-align: center; font-size: 15px; color: #c9d3e3; }
.pista { font-size: 14px; color: #a3b0c5; text-align: center; flex: 1; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(100px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  z-index: var(--z-toast); max-width: calc(100% - 32px); padding: 13px 18px; border-radius: 14px;
  background: var(--txt); color: var(--fondo); font-size: 16px; font-weight: 600; box-shadow: var(--sombra);
  animation: entra .2s ease-out;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .puntos i { opacity: .8; transform: none; }
}

/* =====================================================================
   ESCRITORIO — diseño v4 (≥1100 px). 3 zonas: barra lateral (marca, área, índice de hojas
   agrupado) · chat al centro · visor de plano ACOPLADO a la derecha (solo si hay hoja abierta).
   Tipografía 12/14/16/20/28 · espaciado 4/8 · bordes 1 px suaves · radios 8–14 px.
   ===================================================================== */
@media (min-width: 1100px) {
  :root {
    --fondo: #ffffff;          /* lienzo del chat */
    --barra: #f7f8fa;          /* barra lateral */
    --sup: #ffffff;            /* tarjetas */
    --sup-2: #f2f4f7;          /* hover */
    --sup-3: #e8ebf0;
    --borde: #e3e7ed;
    --borde-2: #cdd4de;
    --txt: #0f172a;
    --txt-2: #334155;
    --txt-3: #5b6b82;          /* 5.2:1 sobre la barra lateral */
    --yo-burbuja: #f1f3f7;
    --seg-fondo: #eceff3;
    --seg-sel: #ffffff;
    --acento-suave: #fff8e5;
    --acento-borde: #efd389;
    --acento-txt: #8a5a00;     /* 5.9:1 sobre acento-suave */
    --acento-linea: #f5b301;
    --chip-txt: #7a4a00;
    --chip-fondo: #fff6dc;
    --chip-borde: #ecd08a;
    --foco: #0b5cad;
    --sombra: 0 12px 32px rgba(15, 23, 42, .12), 0 2px 6px rgba(15, 23, 42, .06);
    --sombra-s: 0 1px 2px rgba(15, 23, 42, .06);
    --sombra-hover: 0 4px 14px rgba(15, 23, 42, .09);
    --v-fondo: #e9edf2;
    --v-punto: rgba(15, 23, 42, .09);
    --v-barra: #ffffff;
    --v-borde: #e3e7ed;
    --v-txt: #0f172a;
    --v-txt-2: #5b6b82;
    --v-hover: #f2f4f7;
    --v-hover-2: #e8ebf0;
    --lat-w: 288px;
    --visor-w: 44%;
    --ancho: 800px;
  }
}
@media (min-width: 1100px) and (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fondo: #0e1525; --barra: #0a101c; --sup: #141d2f; --sup-2: #1a2438; --sup-3: #222e45;
    --borde: #1f2a3f; --borde-2: #2f3d58; --txt: #e8edf5; --txt-2: #b6c2d4; --txt-3: #8d9bb2;
    --yo-burbuja: #1b2539; --seg-fondo: #121a2b; --seg-sel: #26324a;
    --acento-suave: rgba(245, 179, 1, .08); --acento-borde: rgba(245, 179, 1, .32); --acento-txt: #ffd54a; --acento-linea: #f5b301;
    --chip-txt: #ffd54a; --chip-fondo: rgba(245, 179, 1, .12); --chip-borde: rgba(245, 179, 1, .36);
    --foco: #7fb0ff;
    --sombra: 0 12px 32px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .3);
    --sombra-s: 0 1px 2px rgba(0, 0, 0, .35); --sombra-hover: 0 4px 14px rgba(0, 0, 0, .45);
    --v-fondo: #070b14; --v-punto: rgba(255, 255, 255, .055); --v-barra: #0e1525; --v-borde: #1f2a3f;
    --v-txt: #e8edf5; --v-txt-2: #a3b0c5; --v-hover: #1a2438; --v-hover-2: #222e45;
  }
}
@media (min-width: 1100px) {
  :root[data-theme="dark"] {
    --fondo: #0e1525; --barra: #0a101c; --sup: #141d2f; --sup-2: #1a2438; --sup-3: #222e45;
    --borde: #1f2a3f; --borde-2: #2f3d58; --txt: #e8edf5; --txt-2: #b6c2d4; --txt-3: #8d9bb2;
    --yo-burbuja: #1b2539; --seg-fondo: #121a2b; --seg-sel: #26324a;
    --acento-suave: rgba(245, 179, 1, .08); --acento-borde: rgba(245, 179, 1, .32); --acento-txt: #ffd54a; --acento-linea: #f5b301;
    --chip-txt: #ffd54a; --chip-fondo: rgba(245, 179, 1, .12); --chip-borde: rgba(245, 179, 1, .36);
    --foco: #7fb0ff;
    --sombra: 0 12px 32px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .3);
    --sombra-s: 0 1px 2px rgba(0, 0, 0, .35); --sombra-hover: 0 4px 14px rgba(0, 0, 0, .45);
    --v-fondo: #070b14; --v-punto: rgba(255, 255, 255, .055); --v-barra: #0e1525; --v-borde: #1f2a3f;
    --v-txt: #e8edf5; --v-txt-2: #a3b0c5; --v-hover: #1a2438; --v-hover-2: #222e45;
  }
}

@media (min-width: 1100px) {
  body { font-size: 14px; line-height: 1.5; }
  :focus-visible { outline-width: 2px; border-radius: 8px; }
  .lista, .mensajes { scrollbar-width: thin; scrollbar-color: var(--borde-2) transparent; }

  /* ---------- rejilla de 3 zonas ---------- */
  .app { grid-template-rows: minmax(0, 1fr); }
  .barra, .agarre, .solo-movil, #bHojas, .velo { display: none !important; }
  .cuerpo-app {
    grid-template-columns: var(--lat-w) minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
  }
  .cuerpo-app.con-visor { grid-template-columns: var(--lat-w) minmax(400px, 1fr) minmax(360px, var(--visor-w)); }
  .cuerpo-app.redimensionando { cursor: col-resize; user-select: none; }

  /* ---------- barra lateral: marca + nueva + área ---------- */
  .lateral {
    grid-column: 1; grid-row: 1; display: flex; flex-direction: column; gap: 16px;
    padding: 16px; background: var(--barra); border-right: 1px solid var(--borde);
  }
  .lat-marca { display: flex; align-items: center; gap: 12px; padding: 0 4px; min-width: 0; }
  .logo-lat { width: 36px; height: 36px; border-radius: 10px; border: 0; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .08); }
  .logo-lat svg { width: 20px; height: 20px; }
  .lat-marca-txt { display: flex; flex-direction: column; min-width: 0; }
  .lat-marca-t { font-size: 16px; font-weight: 700; line-height: 1.25; letter-spacing: -.01em; white-space: nowrap; }
  .lat-marca-t .mono { font-weight: 700; }
  .lat-marca-s { font-size: 12px; line-height: 1.4; color: var(--txt-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .lat-nueva {
    display: flex; align-items: center; gap: 10px; width: 100%; height: 40px; padding: 0 12px;
    border-radius: 10px; border: 1px solid var(--borde-2); background: var(--sup); color: var(--txt);
    font-size: 14px; font-weight: 600; box-shadow: var(--sombra-s);
    transition: background-color .15s, border-color .15s, box-shadow .15s;
  }
  .lat-nueva:hover { background: var(--sup-2); box-shadow: var(--sombra-hover); }
  .lat-nueva:active { background: var(--sup-3); }
  .lat-nueva svg { width: 18px; height: 18px; color: var(--txt-3); }
  .lat-tit { margin: 0 4px 8px; font-size: 12px; font-weight: 600; color: var(--txt-3); }

  /* área: control segmentado de 2 filas con contadores ("Todas" ocupa dos celdas) */
  .areas {
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; padding: 3px;
    border-radius: 12px; background: var(--seg-fondo); border: 1px solid var(--borde);
  }
  .area-b {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0;
    height: 44px; padding: 0 4px; border: 1px solid transparent; border-radius: 9px; background: transparent;
    color: var(--txt-2); transition: background-color .15s, color .15s, box-shadow .15s;
  }
  .area-todas { grid-column: span 2; }
  .area-b:hover { color: var(--txt); background: color-mix(in srgb, var(--seg-sel) 55%, transparent); }
  .area-b[aria-checked="true"] { background: var(--seg-sel); color: var(--txt); border-color: var(--borde); box-shadow: var(--sombra-s); }
  .area-l { font-size: 14px; font-weight: 650; line-height: 1.2; }
  .area-n { font-size: 11px; line-height: 1.3; color: var(--txt-3); font-variant-numeric: tabular-nums; }
  .area-b[aria-checked="true"] .area-n { color: var(--acento-txt); font-weight: 600; }

  /* ---------- barra lateral: índice de hojas ---------- */
  .panel {
    grid-column: 1; grid-row: 2; position: static; height: auto; min-height: 0;
    transform: none; visibility: visible; transition: none; padding: 0;
    background: var(--barra); border: 0; border-right: 1px solid var(--borde); border-radius: 0; box-shadow: none;
  }
  .panel-cab { gap: 8px; padding: 14px 20px 8px; border-top: 1px solid var(--borde); }
  .panel-cab h2 { flex: 1; font-size: 12px; font-weight: 600; color: var(--txt-3); }
  .panel-cuenta {
    flex: none; padding: 0 8px; border-radius: 999px; background: var(--sup-3);
    font-size: 11px; font-weight: 600; line-height: 20px; color: var(--txt-2); font-variant-numeric: tabular-nums;
  }
  .panel-cuenta:empty { display: none; }
  .buscador { margin: 0 12px 8px; }
  .buscador svg { left: 11px; width: 16px; height: 16px; }
  .buscador input {
    height: 36px; min-height: 36px; padding: 0 52px 0 34px; border-radius: 10px;
    border: 1px solid var(--borde-2); background: var(--sup); font-size: 14px;
    transition: border-color .15s, box-shadow .15s;
  }
  .buscador input:focus { border-color: var(--yo); box-shadow: 0 0 0 3px color-mix(in srgb, var(--yo) 18%, transparent); }
  .buscador::after {
    content: "Ctrl K"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); pointer-events: none;
    padding: 0 5px; border: 1px solid var(--borde-2); border-radius: 6px; background: var(--sup-2);
    font-size: 11px; line-height: 18px; color: var(--txt-3);
  }
  .buscador:focus-within::after, .buscador:has(input:not(:placeholder-shown))::after { display: none; }
  .lista { padding: 0 8px 16px; }
  .esqueleto { height: 44px; margin: 6px 4px; border-radius: 8px; }
  .aviso { padding: 24px 12px; font-size: 13px; }

  .grupo-h + .grupo-h { margin-top: 2px; }
  .grupo-h > summary {
    position: sticky; top: 0; z-index: 1; list-style: none; display: flex; align-items: center; gap: 6px;
    height: 32px; padding: 0 8px 0 6px; border-radius: 8px; background: var(--barra);
    font-size: 12px; font-weight: 600; color: var(--txt-2); cursor: pointer; user-select: none;
    transition: color .12s;
  }
  .grupo-h > summary::-webkit-details-marker { display: none; }
  .grupo-h > summary:hover { color: var(--txt); }
  .gh-chev { width: 14px; height: 14px; color: var(--txt-3); transition: transform .15s; }
  .grupo-h[open] .gh-chev { transform: rotate(90deg); }
  .gh-nom { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .gh-n {
    min-width: 22px; padding: 0 6px; border-radius: 999px; background: var(--sup-3); text-align: center;
    font-size: 11px; font-weight: 600; line-height: 18px; color: var(--txt-3); font-variant-numeric: tabular-nums;
  }
  .gh-filas { padding: 0 0 8px; }

  .hoja-f {
    display: flex; flex-direction: column; gap: 1px; width: 100%; padding: 6px 10px 7px 26px;
    border: 0; border-radius: 8px; background: transparent; text-align: left; color: var(--txt);
    transition: background-color .12s;
  }
  .lista > .hoja-f { padding-left: 10px; }
  .hoja-f:hover { background: var(--sup-2); }
  .hoja-f:active { background: var(--sup-3); }
  .hoja-f[aria-current="true"] { background: var(--acento-suave); box-shadow: inset 2px 0 0 var(--acento-linea); }
  .hf-l1 { display: flex; align-items: center; gap: 6px; min-width: 0; }
  .hf-num { font-size: 13px; font-weight: 700; white-space: nowrap; }
  .hf-tag {
    padding: 0 4px; border: 1px solid var(--borde-2); border-radius: 5px;
    font-size: 11px; line-height: 16px; color: var(--txt-3); white-space: nowrap;
  }
  .hf-rev { margin-left: auto; font-size: 12px; color: var(--txt-3); font-variant-numeric: tabular-nums; white-space: nowrap; }
  .hoja-f[aria-current="true"] .hf-rev { color: var(--acento-txt); }
  .hf-tit {
    font-size: 13px; line-height: 1.35; color: var(--txt-2);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  }
  .hf-frag {
    margin-top: 2px; font-size: 12px; line-height: 1.4; color: var(--txt-3);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  }
  .hf-frag mark { background: var(--chip-fondo); color: var(--chip-txt); border-radius: 3px; padding: 0 2px; font-weight: 600; }

  /* ---------- centro: chat ---------- */
  .chat { grid-column: 2; grid-row: 1 / -1; min-width: 0; background: var(--fondo); }
  .chat-cab {
    position: relative; z-index: 2; flex: none; display: flex; align-items: center; gap: 12px;
    height: 56px; padding: 0 12px 0 24px; background: var(--fondo); border-bottom: 1px solid var(--borde);
  }
  /* con el menú de tema abierto, la cabecera del chat queda por encima de los mensajes */
  .chat-cab:has([aria-expanded="true"]) { z-index: calc(var(--z-menu) + 1); }
  .ctx { display: flex; align-items: baseline; gap: 10px; flex: 1; min-width: 0; }
  .ctx-tit { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -.01em; white-space: nowrap; }
  .ctx-sub { font-size: 13px; color: var(--txt-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .ctx-acc { display: flex; align-items: center; gap: 4px; }
  .ico-s { width: 36px; height: 36px; border-radius: 10px; }
  .ico-s svg { width: 18px; height: 18px; }

  .menu { min-width: 200px; padding: 4px; border-radius: 12px; border-color: var(--borde); }
  .menu-der { min-width: 200px; }
  .menu [role^="menuitem"] { min-height: 36px; gap: 10px; padding: 0 10px; border-radius: 8px; font-size: 14px; font-weight: 500; }
  .menu [role^="menuitem"] svg { width: 16px; height: 16px; }
  .menu [aria-checked="true"] { font-weight: 650; }

  .mensajes { padding: 32px 32px 16px; }
  .con-visor .mensajes { padding: 24px 24px 16px; }

  /* estado vacío: sugerencias en tarjetas */
  .vacio { padding: 10vh 0 16px; }
  .vacio-logo { width: 48px; height: 48px; border-radius: 14px; margin-bottom: 16px; border: 0; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .08); }
  .vacio-logo svg { width: 24px; height: 24px; }
  .vacio h2 { margin: 0 0 8px; font-size: 28px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
  .vacio p { margin: 0 auto 32px; max-width: 480px; font-size: 16px; color: var(--txt-3); }
  .ejemplos { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .ejemplo {
    position: relative; flex-direction: column; align-items: flex-start; gap: 12px;
    min-height: 116px; padding: 16px 36px 16px 16px; border-radius: 12px;
    border: 1px solid var(--borde); background: var(--sup); box-shadow: var(--sombra-s);
    font-size: 14px; line-height: 1.45; font-weight: 500; color: var(--txt);
    transition: border-color .15s, box-shadow .15s;
  }
  .ejemplo:hover { background: var(--sup); border-color: var(--borde-2); box-shadow: var(--sombra-hover); }
  .ejemplo .ej-i {
    display: block; width: 32px; height: 32px; padding: 7px; border-radius: 8px;
    color: var(--acento-txt); background: var(--acento-suave); border: 1px solid var(--acento-borde);
  }
  .ejemplo > svg:last-child {
    position: absolute; top: 16px; right: 14px; width: 16px; height: 16px; color: var(--txt-3);
    opacity: 0; transition: opacity .15s, transform .15s;
  }
  .ejemplo:hover > svg:last-child, .ejemplo:focus-visible > svg:last-child { opacity: 1; transform: translateX(2px); }

  /* mensajes: los míos en burbuja neutra a la derecha; los del agente sin burbuja, a todo el ancho */
  .msg { margin-bottom: 28px; }
  .msg.yo { padding-left: 20%; }
  .msg.yo .burbuja {
    padding: 10px 14px 8px; border-radius: 14px 14px 4px 14px; font-size: 16px; line-height: 1.5;
    background: var(--yo-burbuja); color: var(--txt); border: 1px solid var(--borde); box-shadow: none;
  }
  .msg.yo .hora { color: var(--txt-3); }
  .msg.bot { padding-right: 0; }
  .msg.bot .burbuja { padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
  .msg.bot .burbuja::before {
    content: "Agente de obra"; display: flex; align-items: center; margin-bottom: 10px; padding-left: 16px;
    font-size: 12px; font-weight: 600; color: var(--txt-3);
    background: linear-gradient(var(--acento-linea), var(--acento-linea)) left center / 8px 8px no-repeat;
  }
  .msg.bot .hora { text-align: left; margin-top: 10px; }
  .hora { font-size: 12px; }
  .msg.error { padding: 12px 16px; border-radius: 12px; font-size: 14px; }

  /* tarjeta DATO: sobria, acento ámbar suave, valor en la fuente del sistema con cifras tabulares */
  .dato-tarjeta {
    gap: 4px; margin: 0 0 16px; padding: 14px 18px 16px; border-radius: 12px;
    background: var(--acento-suave); color: var(--txt);
    border: 1px solid var(--acento-borde); border-left: 3px solid var(--acento-linea);
  }
  .dato-et { gap: 6px; font-size: 12px; font-weight: 600; text-transform: none; letter-spacing: .01em; color: var(--acento-txt); }
  .dato-et svg { width: 14px; height: 14px; }
  .dato-val {
    font-family: var(--sans); font-size: 28px; font-weight: 700; line-height: 1.2; letter-spacing: -.02em;
    font-variant-numeric: tabular-nums lining-nums; color: var(--txt);
  }
  .dato-fuente { gap: 6px; margin-top: 6px; font-size: 13px; font-weight: 500; color: var(--txt-3); }
  .dato-fuente .ref { color: var(--acento-txt); background: var(--sup); border-color: var(--acento-borde); }
  .dato-fuente .ref:hover { background: var(--chip-fondo); }

  /* pasos del agente */
  .pasos { margin: 0 0 12px; }
  .pasos summary {
    min-height: 30px; gap: 6px; padding: 2px 10px 2px 8px; border-radius: 8px;
    font-size: 13px; font-weight: 500; color: var(--txt-3); background: transparent; border: 1px solid var(--borde);
    transition: color .15s, border-color .15s;
  }
  .pasos summary .chev, .pasos summary .ok { width: 14px; height: 14px; }
  .pasos ol { margin: 8px 0 8px 6px; border-left-width: 2px; font-size: 13px; color: var(--txt-3); }
  .pensando { min-height: 30px; font-size: 14px; color: var(--txt-3); }
  .puntos i { width: 6px; height: 6px; }

  /* texto del agente */
  .md { font-size: 16px; line-height: 1.65; }
  .md p { margin: 0 0 12px; }
  .md h3 { margin: 20px 0 8px; font-size: 20px; letter-spacing: -.01em; }
  .md h4 { margin: 16px 0 6px; font-size: 16px; }
  .md ul, .md ol { margin: 0 0 12px; padding-left: 24px; }
  .md .tabla { border-radius: 10px; margin: 4px 0 16px; }
  .md table { font-size: 14px; font-variant-numeric: tabular-nums; }
  .md th { font-size: 12px; font-weight: 600; color: var(--txt-3); }
  .md th, .md td { padding: 8px 12px; }

  /* chip de hoja en el texto: compacto */
  .ref {
    gap: 4px; min-height: 24px; padding: 0 7px 0 6px; margin: 0 1px; border-radius: 6px; border-width: 1px;
    font-size: 13px; font-weight: 650; line-height: 22px;
  }
  .ref .ref-i { width: 13px; height: 13px; }
  .ref .r { font-weight: 500; opacity: .9; }

  /* hojas adjuntas: tarjetas con miniatura (hasta 3 visibles) */
  .adjuntos { margin-top: 16px; }
  .adj-rejilla { grid-template-columns: repeat(auto-fill, minmax(176px, 1fr)); gap: 12px; }
  .adj-rejilla.uno { grid-template-columns: minmax(0, 280px); }
  .adj {
    border-radius: 12px; border: 1px solid var(--borde); background: var(--sup); box-shadow: var(--sombra-s);
    transition: border-color .15s, box-shadow .15s;
  }
  .adj:hover { background: var(--sup); border-color: var(--borde-2); box-shadow: var(--sombra-hover); }
  .adj-img { aspect-ratio: 16 / 10; }
  .adj-pie { gap: 2px; min-height: 0; padding: 8px 12px 10px; }
  .adj-num .mono { font-size: 13px; font-weight: 700; }
  .adj-pag { font-size: 12px; }
  .adj-tit { font-size: 12px; line-height: 1.4; color: var(--txt-3); }
  .rev { padding: 0 6px; border-radius: 5px; font-size: 11px; font-weight: 600; line-height: 18px; }
  .adj-mas {
    min-height: 32px; margin-top: 10px; padding: 0 12px; border-radius: 8px;
    font-size: 13px; font-weight: 600; background: transparent; border-color: var(--borde-2);
  }
  .adj-mas:hover { background: var(--sup-2); }
  .adj-mas .chev { width: 14px; height: 14px; }

  /* votos y corrección */
  .voto-fila { gap: 2px; margin-top: 6px; }
  .voto { width: 32px; height: 32px; border-radius: 8px; }
  .voto svg { width: 16px; height: 16px; }
  .voto:hover { background: var(--sup-2); }
  .voto-estado { margin-left: 6px; font-size: 12px; color: var(--txt-3); }
  .corregir { margin-top: 8px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--borde-2); }
  .corregir:focus-within { box-shadow: 0 0 0 3px color-mix(in srgb, var(--yo) 18%, transparent); }
  .corregir textarea { min-height: 72px; font-size: 15px; }
  .corregir .btn-pri, .corregir .btn-sec { min-height: 34px; padding: 0 14px; border-radius: 8px; font-size: 14px; }
  .corr-guardada { margin-top: 8px; padding: 8px 12px; border-left-width: 3px; font-size: 14px; }
  .corr-tit { font-size: 12px; font-weight: 600; }

  /* caja de escribir: amplia, tipo tarjeta, botón dentro */
  .escribir { padding: 8px 32px 16px; background: var(--fondo); }
  .con-visor .escribir { padding: 8px 24px 16px; }
  .caja {
    gap: 8px; padding: 8px 8px 8px 16px; border-radius: 14px;
    border: 1px solid var(--borde-2); background: var(--sup); box-shadow: 0 2px 8px rgba(15, 23, 42, .05);
    transition: border-color .15s, box-shadow .15s;
  }
  .caja:focus-within { border-color: var(--yo); box-shadow: 0 0 0 3px color-mix(in srgb, var(--yo) 18%, transparent); }
  .caja textarea {
    min-height: 40px; padding: 8px 0; border: 0; border-radius: 0; background: transparent; box-shadow: none;
    font-size: 16px; line-height: 1.5;
  }
  .enviar { width: 36px; height: 36px; border-radius: 10px; box-shadow: none; }
  .enviar svg { width: 18px; height: 18px; }
  .nota-pie { margin-top: 8px; font-size: 12px; }

  /* ---------- derecha: visor ACOPLADO (tema claro/oscuro) ---------- */
  .visor {
    position: relative; inset: auto; z-index: 3; grid-column: 3; grid-row: 1 / -1; min-width: 0; min-height: 0;
    background: var(--v-fondo); color: var(--v-txt); border-left: 1px solid var(--borde);
    --sup-2: var(--v-hover); --sup-3: var(--v-hover-2); --txt: var(--v-txt); --txt-2: var(--v-txt-2); --foco: var(--yo);
  }
  .visor.amplio { position: fixed; inset: 0; z-index: var(--z-visor); border-left: 0; }
  .visor-borde {
    display: block; position: absolute; left: -4px; top: 0; bottom: 0; z-index: 4; width: 8px; cursor: col-resize;
  }
  .visor-borde::after {
    content: ""; position: absolute; left: 3px; top: 0; bottom: 0; width: 2px; background: transparent;
    transition: background-color .15s;
  }
  .visor-borde:hover::after, .visor-borde:focus-visible::after, .redimensionando .visor-borde::after { background: var(--yo); }
  .visor-borde:focus-visible { outline: none; }
  .visor.amplio .visor-borde { display: none; }
  .visor-cab {
    min-height: 56px; gap: 4px; padding: 8px 10px 8px 16px;
    background: var(--v-barra); border-bottom: 1px solid var(--v-borde); backdrop-filter: none;
  }
  .visor-cab #vCerrar { order: 5; }
  #vAmpliar { display: inline-grid; order: 4; }
  .visor-tit { margin-right: 8px; }
  .visor-num { gap: 8px; }
  .visor-num .mono { font-size: 16px; font-weight: 700; color: var(--v-txt); }
  .visor .rev { background: var(--chip-fondo); color: var(--chip-txt); border-color: var(--chip-borde); }
  .visor-sub { font-size: 12px; color: var(--v-txt-2); }
  .ico-visor { width: 34px; height: 34px; border-radius: 8px; color: var(--v-txt-2); }
  .ico-visor svg { width: 18px; height: 18px; }
  .ico-visor:hover { background: var(--v-hover); color: var(--v-txt); }
  .btn-pdf {
    min-height: 32px; gap: 6px; padding: 0 10px; margin-right: 4px; border-radius: 8px;
    border: 1px solid var(--borde-2); background: transparent; color: var(--v-txt); font-size: 13px; font-weight: 600;
    transition: background-color .15s;
  }
  .btn-pdf:hover { background: var(--v-hover); }
  .btn-pdf svg { width: 15px; height: 15px; }
  .visor-pie {
    gap: 8px; padding: 6px 10px; background: var(--v-barra); border-top: 1px solid var(--v-borde); backdrop-filter: none;
  }
  .lienzo {
    background-color: var(--v-fondo);
    background-image: radial-gradient(var(--v-punto) 1px, transparent 1.2px);
    background-size: 20px 20px;
  }
  .lienzo img { box-shadow: 0 0 0 1px rgba(15, 23, 42, .10), 0 10px 30px rgba(15, 23, 42, .18); }
  .cargando { color: var(--v-txt-2); font-size: 13px; }
  .giro { width: 24px; height: 24px; border-width: 2px; border-color: var(--v-borde); border-top-color: var(--acento-linea); }
  .lado {
    width: 36px; height: 48px; border-radius: 10px; border: 1px solid var(--v-borde);
    background: var(--v-barra); color: var(--v-txt); box-shadow: var(--sombra-s); backdrop-filter: none;
  }
  .lado:hover { background: var(--v-hover); }
  .lado svg { width: 20px; height: 20px; }
  .pag { min-width: 44px; font-size: 13px; color: var(--v-txt-2); font-variant-numeric: tabular-nums; }
  .pista { font-size: 12px; color: var(--v-txt-2); }
  .redimensionando .lienzo img { transition: none !important; }

  .toast { bottom: 96px; padding: 10px 16px; border-radius: 10px; font-size: 14px; }
}
@media (min-width: 1600px) {
  :root { --lat-w: 304px; --ancho: 840px; }
}