:root {
    /* Fuentes */
    --font-ui: "Plus Jakarta Sans", "Inter", sans-serif;
    --font-texto: "DM Sans", "Inter", sans-serif;

/* Colores */
    --color-bg: #F4F6F6;
    --color-dark: #10181A;

    --color-main: #003153;
    /* Azul marino principal */
    --color-main-hover: #004B7A;
    /* Azul más claro para hover */
    --color-main-light: #E8EEF5;
    /* Azul muy claro para fondos */
    --color-secondary: #5A7A94;
    /* Gris-azul para texto secundario */
    --color-border: #D0DCE8;
    /* Borde más azulado */

    --color-error: #B3453D;
    --color-error-hover: #8F342E;

    /* Nuevas variables para mejorar la jerarquía */
    --color-surface: #FFFFFF;
    --color-shadow: rgba(0, 49, 83, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 40px 20px;
    font-family: var(--font-texto);
    background-color: var(--color-bg);
    color: var(--color-dark);
    line-height: 1.6;
}

/* ===========================
   ENLACES - SIN SUBRAYADO
=========================== */

a {
    text-decoration: none;
    color: inherit;
}

a:hover {
    text-decoration: none;
}

/* ===========================
   CONTENEDORES
=========================== */

.contenedor {
    max-width: 950px;
    margin: 0 auto;
}

h1 {
    margin-bottom: 10px;
}

h2,
h3 {
    margin-top: 0;
}

h1,
h2,
h3,
button,
.etiqueta-chat,
.etiqueta-checklist {
    font-family: var(--font-ui);
}

.introduccion {
    margin-top: 30px;
    margin-bottom: 30px;
    color: var(--color-secondary);
}

/* ===========================
   PORTADA PRINCIPAL
=========================== */

.cabecera-gestion {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}

.cabecera-gestion h1 {
    margin-bottom: 0;
}

.metodologias {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 10px;
}

.tarjeta-metodologia {
    display: block;
    padding: 24px;
    background-color: var(--color-main);
    color: var(--color-bg);
    border: 2px solid transparent;
    border-radius: 12px;
    transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.15s ease;
    cursor: pointer;
}

.tarjeta-metodologia:hover {
    background-color: var(--color-main-hover);
    border-color: var(--color-secondary);
    transform: translateY(-2px);
}

.tarjeta-metodologia h2 {
    margin-bottom: 4px;
    color: var(--color-bg);
}

.tarjeta-metodologia p {
    margin: 0;
    color: var(--color-bg);
    opacity: 0.8;
}

.tarjeta-seleccionada {
    border-color: var(--color-secondary);
}

.panel-documentos {
    margin-top: 35px;
}

/* ===========================
   METODOLOGÍA ACTIVA
=========================== */

.metodologia-activa {
    margin-top: 30px;
    padding: 24px 28px;
    border-left: 5px solid var(--color-main);
    border-radius: 10px;
    background-color: var(--color-surface);
    box-shadow: 0 2px 12px var(--color-shadow);
}

.metodologia-activa h2 {
    margin-bottom: 8px;
    color: var(--color-main);
}

.metodologia-activa p {
    margin-bottom: 15px;
    color: var(--color-secondary);
}

.metodologia-activa form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.metodologia-activa label {
    font-weight: 600;
    color: var(--color-dark);
}

.metodologia-activa select {
    padding: 10px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-texto);
    font-size: 14px;
    background-color: var(--color-surface);
    color: var(--color-dark);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    min-width: 200px;
}

.metodologia-activa select,
.formulario-chat textarea,
.grupo-formulario input {
    border-color: var(--color-border);
}

.metodologia-activa select:focus {
    border-color: var(--color-main);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 49, 83, 0.10);
}

.metodologia-activa button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background-color: var(--color-main);
    color: var(--color-bg);
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.metodologia-activa button:hover {
    background-color: var(--color-main-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(27, 58, 75, 0.25);
}

.metodologia-activa button:active {
    transform: translateY(0);
}

.sin-metodologias {
    color: var(--color-secondary);
}

.nombre-carpeta {
    color: var(--color-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

/* ===========================
   SECCIONES DE DOCUMENTOS
=========================== */

.seccion-subida,
.listado-documentos,
.seccion-vectorial {
    margin-top: 20px;
    padding: 25px 28px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    box-shadow: 0 2px 12px var(--color-shadow);
}

.seccion-subida h3,
.listado-documentos h3 {
    color: var(--color-main);
    margin-bottom: 16px;
}

.seccion-vectorial h3 {
    color: var(--color-secondary);
    margin-bottom: 12px;
}

.seccion-vectorial {
    border-style: dashed;
}

.formulario-subida {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 15px;
}

.formulario-subida input[type="file"] {
    padding: 8px 0;
    font-family: var(--font-texto);
    font-size: 14px;
    color: var(--color-secondary);
}

.formulario-subida input[type="file"]::file-selector-button {
    padding: 8px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: 6px;
    background-color: var(--color-bg);
    color: var(--color-dark);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-right: 10px;
}

.formulario-subida input[type="file"]::file-selector-button:hover {
    background-color: var(--color-border);
}

.listado-documentos ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.listado-documentos li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
}

.listado-documentos li:last-child {
    border-bottom: none;
}

.informacion-documento {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow-wrap: anywhere;
    flex: 1;
}

.icono-pdf {
    flex-shrink: 0;
    padding: 4px 10px;
    border-radius: 4px;
    background-color: var(--color-bg);
    font-size: 11px;
    font-weight: 700;
    color: var(--color-secondary);
    letter-spacing: 0.5px;
}

/* ===========================
   BOTONES UNIFICADOS
=========================== */

.boton {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.boton-principal {
    background-color: var(--color-main);
    color: var(--color-bg);
}

.boton-principal:hover {
    background-color: var(--color-main-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(27, 58, 75, 0.25);
}

.boton-principal:active {
    transform: translateY(0);
}

.boton-secundario {
    border: 1.5px solid var(--color-main);
    background-color: transparent;
    color: var(--color-main);
}

.boton-secundario:hover {
    background-color: var(--color-main);
    color: var(--color-bg);
}

.boton-eliminar {
    background-color: var(--color-error);
    color: var(--color-bg);
}

.boton-eliminar:hover {
    background-color: var(--color-error-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(179, 69, 61, 0.25);
}

.boton-eliminar:active {
    transform: translateY(0);
}

.boton:disabled {
    cursor: not-allowed;
    opacity: 0.55;
    transform: none !important;
}

.enlace-boton {
    display: inline-flex;
    text-decoration: none !important;
}

.enlace-boton:hover {
    text-decoration: none !important;
}

/* ===========================
   MENSAJES FLASH
=========================== */

.mensajes {
    margin-bottom: 25px;
}

.mensaje {
    padding: 14px 18px;
    border-radius: 8px;
    border-left: 4px solid transparent;
    background-color: var(--color-surface);
    box-shadow: 0 2px 8px var(--color-shadow);
    margin: 0 0 8px 0;
}

.mensaje:last-child {
    margin-bottom: 0;
}

.mensaje-exito {
    border-left-color: var(--color-main);
    color: var(--color-dark);
}

.mensaje-error {
    border-left-color: var(--color-error);
    color: var(--color-dark);
}

.mensaje-informacion {
    border-left-color: var(--color-secondary);
    color: var(--color-dark);
}

.sin-documentos {
    color: var(--color-secondary);
    margin: 0;
}

.seccion-vectorial p {
    color: var(--color-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

/* ===========================
   LOGIN
=========================== */

.contenedor-inicio {
    min-height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.cabecera-inicio {
    max-width: 720px;
    margin-bottom: 35px;
}

.etiqueta {
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-secondary);
}

.descripcion-inicio {
    max-width: 650px;
    margin-top: 15px;
    color: var(--color-secondary);
    font-size: 18px;
    line-height: 1.6;
}

.opciones-inicio {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.tarjeta-acceso {
    padding: 30px;
    border-radius: 12px;
    background-color: var(--color-surface);
    box-shadow: 0 2px 12px var(--color-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tarjeta-acceso:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--color-shadow);
}

.tarjeta-acceso p {
    margin-bottom: 25px;
    color: var(--color-secondary);
    line-height: 1.5;
}

.enlace-boton {
    display: inline-block;
    text-decoration: none;
}

.contenedor-login {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tarjeta-login {
    width: 100%;
    max-width: 480px;
    padding: 40px;
    border-radius: 12px;
    background-color: var(--color-surface);
    box-shadow: 0 2px 12px var(--color-shadow); 
}

.enlace-volver {
    color: var(--color-main);
    text-decoration: none;
    transition: color 0.2s ease;
}

.enlace-volver:hover {
    color: var(--color-main-hover);
}

.descripcion-login {
    margin-bottom: 25px;
    color: var(--color-secondary);
    line-height: 1.5;
}

.formulario-login {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.grupo-formulario {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.grupo-formulario label {
    font-weight: 600;
    color: var(--color-dark);
}

.grupo-formulario input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: var(--color-surface);
}

.grupo-formulario input:focus {
    border-color: var(--color-main);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 49, 83, 0.10);
}

.boton-login {
    width: 100%;
    margin-top: 5px;
}

/* ===========================
   CHATBOT
=========================== */

.pagina-chat {
    min-height: 100vh;
    padding: 28px 20px;
    background-color: var(--color-bg);
}

.contenedor-chat {
    width: 100%;
    max-width: 1180px;
    min-height: calc(100vh - 56px);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.cabecera-chat {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 22px;
}

.cabecera-chat h1 {
    margin: 0;
    color: var(--color-main);
    font-size: clamp(32px, 4vw, 44px);
    line-height: 1.15;
}

.etiqueta-chat {
    margin: 0 0 8px;
    color: var(--color-secondary);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.descripcion-chat {
    max-width: 650px;
    margin: 12px 0 0;
    color: var(--color-secondary);
    font-size: 17px;
    line-height: 1.5;
}

.acciones-chat {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.enlace-volver-chat {
    border: 1.5px solid var(--color-main);
    background-color: transparent;
    color: var(--color-main);
    padding: 10px 18px;
    border-radius: 8px;
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.enlace-volver-chat:hover {
    background-color: var(--color-main);
    color: var(--color-bg);
}

.boton-imprimir {
    border: 1.5px solid var(--color-main);
    background-color: transparent;
    color: var(--color-main);
    padding: 10px 18px;
    border-radius: 8px;
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.boton-imprimir:hover {
    background-color: var(--color-main);
    color: var(--color-bg);
}

.zona-chat {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    align-items: stretch;
    flex: 1;
    min-height: 0;
}

.panel-chat {
    min-width: 0;
    min-height: 620px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 14px;
    background-color: var(--color-surface);
    box-shadow: 0 2px 12px var(--color-shadow);
}

.ventana-chat {
    flex: 1;
    min-height: 280px;
    max-height: 560px;
    padding: 26px 24px;
    overflow-y: auto;
    background-color: var(--color-surface);
    scroll-behavior: smooth;
}

/* Scrollbar personalizada */
.ventana-chat::-webkit-scrollbar,
.checklist::-webkit-scrollbar {
    width: 5px;
}

.ventana-chat::-webkit-scrollbar-track,
.checklist::-webkit-scrollbar-track {
    background: var(--color-bg);
    border-radius: 10px;
}

.ventana-chat::-webkit-scrollbar-thumb,
.checklist::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 10px;
}

.ventana-chat::-webkit-scrollbar-thumb:hover,
.checklist::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

.fila-mensaje {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-bottom: 22px;
}

.fila-mensaje:last-child {
    margin-bottom: 0;
}

.fila-asistente {
    align-items: flex-start;
}

.fila-usuario {
    align-items: flex-end;
}

.identificador-mensaje {
    margin: 0 4px 6px;
    color: var(--color-secondary);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.fila-usuario .identificador-mensaje {
    color: var(--color-secondary);
}

.mensaje-chat {
    width: fit-content;
    max-width: min(76%, 680px);
    padding: 13px 18px;
    border-radius: 14px;
    font-size: 15px;
    line-height: 1.65;
    overflow-wrap: anywhere;
    white-space: pre-line;
}

.mensaje-bot {
    border-top-left-radius: 5px;
    background-color: var(--color-bg);
    color: var(--color-dark);
}

.mensaje-usuario {
    border-top-right-radius: 5px;
    background-color: var(--color-main);
    color: var(--color-bg);
}

.formulario-chat {
    padding: 20px 24px 18px;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.grupo-metodologia {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 17px;
    padding: 9px 14px;
    border-radius: 8px;
    background-color: var(--color-bg);
}

.etiqueta-metodologia {
    color: var(--color-secondary);
    font-size: 12px;
}

.nombre-metodologia {
    color: var(--color-dark);
    font-size: 13px;
    font-weight: 600;
}

.selector-modos {
    display: flex;
    flex-direction: column;
    gap: 13px;
}

.cabecera-modos h2 {
    margin: 0 0 4px;
    color: var(--color-dark);
    font-size: 18px;
}

.cabecera-modos p {
    margin: 0;
    color: var(--color-secondary);
    font-size: 13px;
    line-height: 1.45;
}

.tarjetas-modo {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(210px, 0.8fr);
    gap: 12px;
}

.tarjeta-modo {
    display: flex;
    flex-direction: column;
    min-width: 0;
    padding: 18px;
    border: 1.5px solid var(--color-border);
    border-radius: 11px;
    background-color: var(--color-surface);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tarjeta-modo:hover {
    border-color: var(--color-secondary);
}

.tarjeta-preguntas {
    border-color: var(--color-border);
}

.tarjeta-preguntas:hover {
    border-color: var(--color-main);
}

.tarjeta-guia {
    background-color: var(--color-bg);
}

.tarjeta-guia:hover {
    border-color: var(--color-main);
}

.contenedor-icono {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.icono-modo {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-bg);
    color: var(--color-main);
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.icono-guia {
    background-color: var(--color-bg);
}

.contenido-modo h3 {
    margin: 0;
    color: var(--color-dark);
    font-size: 15px;
}

.contenido-modo p {
    margin: 4px 0 13px;
    color: var(--color-secondary);
    font-size: 13px;
    line-height: 1.45;
}

.etiqueta-pregunta {
    display: block;
    margin-bottom: 6px;
    color: var(--color-secondary);
    font-size: 13px;
    font-weight: 700;
}

.formulario-chat textarea {
    width: 100%;
    min-height: 66px;
    max-height: 150px;
    padding: 11px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: 9px;
    background-color: var(--color-surface);
    color: var(--color-dark);
    font-family: var(--font-texto);
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.formulario-chat textarea:focus {
    border-color: var(--color-main);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 49, 83, 0.10);
}

.boton-enviar {
    width: 100%;
    margin-top: 9px;
}

.boton-guiado {
    border: 1.5px solid var(--color-main);
    background-color: transparent;
    color: var(--color-main);
    padding: 10px 18px;
    border-radius: 8px;
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.boton-guiado:hover {
    background-color: var(--color-main);
    color: var(--color-bg);
}

.ayuda-pregunta {
    margin: 8px 0 0;
    color: var(--color-secondary);
    font-size: 11px;
}

.estado-carga {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 13px;
    color: var(--color-secondary);
    font-size: 13px;
}

.estado-carga[hidden] {
    display: none;
}

.spinner {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-main);
    border-radius: 50%;
    animation: girar 0.8s linear infinite;
}

@keyframes girar {
    to {
        transform: rotate(360deg);
    }
}

/* ===========================
   GUÍA / CHECKLIST
=========================== */

.panel-guia {
    min-width: 0;
    padding: 20px;
    border-radius: 14px;
    background-color: var(--color-surface);
    box-shadow: 0 2px 12px var(--color-shadow);
}

.panel-guia[hidden] {
    display: none;
}

.cabecera-checklist {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 17px;
}

.etiqueta-checklist {
    display: inline-block;
    margin-bottom: 5px;
    color: var(--color-secondary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
}

.cabecera-checklist h2 {
    margin: 0 0 5px;
    color: var(--color-dark);
    font-size: 19px;
}

.cabecera-checklist p {
    margin: 0;
    color: var(--color-secondary);
    font-size: 12px;
    line-height: 1.45;
}

.boton-cerrar-guia {
    flex-shrink: 0;
    padding: 7px 12px;
    font-size: 12px;
}

.checklist {
    display: flex;
    flex-direction: column;
    gap: 9px;
    max-height: 620px;
    overflow-y: auto;
    padding-right: 2px;
}

.elemento-guia {
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 9px;
    background-color: var(--color-surface);
    transition: border-color 0.2s ease;
}

.elemento-guia:hover {
    border-color: var(--color-secondary);
}

.fila-paso {
    margin-bottom: 7px;
    color: var(--color-main);
    font-size: 13px;
}

.fila-actividad {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    margin-top: 5px;
    padding: 7px 10px;
    border-radius: 7px;
    background-color: var(--color-bg);
    transition: background-color 0.2s ease;
}

.fila-actividad:hover {
    background-color: var(--color-main-light);
}

.checkbox-paso {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--color-main);
}

.fila-actividad label {
    min-width: 0;
    color: var(--color-dark);
    font-size: 12px;
    line-height: 1.35;
    cursor: pointer;
}

.checkbox-paso:checked+label {
    color: var(--color-secondary);
    text-decoration: line-through;
}

.boton-empezar-paso {
    background-color: var(--color-main);
    color: var(--color-bg);
    border: none;
    padding: 4px 12px;
    border-radius: 5px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-ui);
}

.boton-empezar-paso:hover {
    background-color: var(--color-main-hover);
}

.checklist-vacio {
    margin: 0;
    color: var(--color-secondary);
    font-size: 13px;
}

/* ===========================
   RESPONSIVE
=========================== */

@media (min-width: 1050px) {

    .zona-chat.guia-visible,
    .zona-chat:has(.panel-guia:not([hidden])) {
        grid-template-columns: minmax(0, 1fr) 315px;
    }
}

@media (max-width: 1049px) and (min-width: 701px) {
    .zona-chat:has(.panel-guia:not([hidden])) {
        grid-template-columns: minmax(0, 1fr) 270px;
    }

    .panel-guia {
        padding: 16px;
    }

    .tarjetas-modo {
        grid-template-columns: 1fr 0.7fr;
    }

    .mensaje-chat {
        max-width: 82%;
    }
}

@media (max-width: 700px) {
    .pagina-chat {
        padding: 18px 10px;
    }

    .contenedor-chat {
        min-height: calc(100vh - 36px);
    }

    .cabecera-chat {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 16px;
    }

    .cabecera-chat h1 {
        font-size: 32px;
    }

    .descripcion-chat {
        font-size: 15px;
    }

    .acciones-chat {
        width: 100%;
        flex-direction: row;
    }

    .boton-imprimir,
    .enlace-volver-chat {
        flex: 1;
        text-align: center;
    }

    .zona-chat {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .panel-chat {
        min-height: 0;
        border-radius: 11px;
    }

    .ventana-chat {
        min-height: 300px;
        max-height: 52vh;
        padding: 20px 14px;
    }

    .mensaje-chat {
        max-width: 88%;
        padding: 12px 14px;
        font-size: 14px;
    }

    .formulario-chat {
        padding: 16px 14px;
    }

    .tarjetas-modo {
        grid-template-columns: 1fr;
    }

    .tarjeta-modo {
        padding: 14px;
    }

    .tarjeta-guia {
        min-height: 0;
    }

    .panel-guia {
        width: 100%;
        padding: 15px;
        border-radius: 11px;
    }

    .checklist {
        max-height: none;
        overflow-y: visible;
    }

    .fila-actividad {
        grid-template-columns: 18px minmax(0, 1fr);
    }

    .boton-empezar-paso {
        grid-column: 2;
        justify-self: start;
        margin-top: 2px;
    }

    .cabecera-checklist {
        align-items: center;
    }

    /* Responsive para gestión de documentos */
    .cabecera-gestion {
        flex-direction: column;
        align-items: flex-start;
    }

    .metodologia-activa form {
        flex-direction: column;
        align-items: stretch;
    }

    .metodologia-activa select {
        width: 100%;
    }

    .formulario-subida {
        flex-direction: column;
        align-items: stretch;
    }

    .formulario-subida input[type="file"] {
        width: 100%;
    }

    .listado-documentos li {
        flex-wrap: wrap;
    }

    .seccion-subida,
    .listado-documentos,
    .seccion-vectorial {
        padding: 18px;
    }
}

@media (max-width: 430px) {
    .acciones-chat {
        flex-direction: column;
    }

    .boton-imprimir,
    .enlace-volver-chat {
        width: 100%;
    }

    .ventana-chat {
        max-height: 50vh;
    }

    .mensaje-chat {
        max-width: 94%;
    }

    .cabecera-checklist {
        align-items: flex-start;
    }

    .metodologias {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   IMPRESIÓN
=========================== */

@media print {
    @page {
        margin: 18mm;
    }

    body,
    .pagina-chat {
        padding: 0;
        background-color: var(--color-surface);
        color: var(--color-dark);
    }

    .contenedor-chat {
        width: 100%;
        max-width: none;
        min-height: auto;
        margin: 0;
    }

    .acciones-chat,
    .formulario-chat,
    .mensajes {
        display: none;
    }

    .cabecera-chat {
        display: block;
        margin-bottom: 22px;
        padding-bottom: 14px;
        border-bottom: 1px solid var(--color-border);
    }

    .cabecera-chat h1 {
        color: var(--color-dark);
        font-size: 28px;
    }

    .etiqueta-chat,
    .descripcion-chat {
        color: var(--color-secondary);
    }

    .panel-chat {
        display: block;
        overflow: visible;
        border: none;
        border-radius: 0;
        box-shadow: none;
        background-color: var(--color-surface);
    }

    .ventana-chat {
        display: block;
        min-height: auto;
        max-height: none;
        padding: 0;
        overflow: visible;
        background-color: var(--color-surface);
    }

    .fila-mensaje {
        margin-bottom: 16px;
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .identificador-mensaje {
        color: var(--color-dark);
    }

    .mensaje-chat {
        width: auto;
        max-width: 88%;
        border: 1px solid var(--color-border);
        background-color: var(--color-surface);
        color: var(--color-dark);
        box-shadow: none;
    }

    .mensaje-usuario {
        margin-left: auto;
        background-color: var(--color-bg);
        color: var(--color-dark);
    }

    .mensaje-bot {
        margin-right: auto;
        background-color: var(--color-bg);
        color: var(--color-dark);
    }
}