:root {
  color-scheme: dark;
  --bg: #171717;
  --bg-panel: #1f1f1f;
  --bg-input: #2a2a2a;
  --border: #333;
  --text: #e6e6e6;
  --text-dim: #9a9a9a;
  --accent: #4f8cff;
  --bubble-user: #2b4a7a;
  --bubble-assistant: #262626;
  --chat-size: 15px;
  --bubble-max: 70%;
  --code-bg: #141414;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f7f8;
  --bg-panel: #ffffff;
  --bg-input: #f0f0f2;
  --border: #e0e0e4;
  --text: #1c1c1e;
  --text-dim: #6b6b70;
  --bubble-user: #dbeafe;
  --bubble-assistant: #ffffff;
  --code-bg: #f4f4f6;
}

:root[data-theme="light"] .bubble.user {
  color: #12305e;
}

:root[data-theme="light"] .bubble.assistant,
:root[data-theme="light"] .session-item:hover {
  border: 1px solid var(--border);
}

:root[data-theme="light"] .session-item.active {
  background: var(--bg-input);
}

* {
  box-sizing: border-box;
}

/* El atributo hidden lo pierde cualquier regla de clase que fije display
   (.gate y .app son flex): sin esto, la capa de login seguía tapando el chat. */
[hidden] {
  display: none !important;
}

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
}

.app {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 260px;
  min-width: 200px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 12px;
}

.new-chat-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 12px;
}

.new-chat-btn:hover {
  filter: brightness(1.1);
}

.session-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-dim);
  gap: 6px;
}

.session-item span.title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-item:hover {
  background: #2a2a2a;
}

.session-item.active {
  background: #2f3f5f;
  color: var(--text);
}

.session-item .delete-btn {
  opacity: 0;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
}

.session-item:hover .delete-btn {
  opacity: 1;
}

.model-picker {
  border-top: 1px solid var(--border);
  margin-top: 8px;
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.model-picker label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.model-picker select {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 8px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
}

.chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bubble {
  max-width: 100%;
  padding: 10px 14px;
  border-radius: 12px;
  line-height: 1.5;
  font-size: var(--chat-size);
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.bubble .prose {
  white-space: pre-wrap;
}

.bubble.user {
  background: var(--bubble-user);
}

.bubble.thinking {
  opacity: 0.6;
  font-style: italic;
}

.bubble.assistant {
  background: var(--bubble-assistant);
}

/* Cada mensaje va en una fila que controla el lado y el ancho. */
.row {
  display: flex;
  flex-direction: column;
  max-width: var(--bubble-max);
}

.row.user {
  align-self: flex-end;
  align-items: flex-end;
}

.row.assistant {
  align-self: flex-start;
  align-items: flex-start;
}

.who {
  display: none;
  margin-bottom: 4px;
  padding: 0 4px;
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

body.show-roles .who {
  display: block;
}

.chat-form {
  display: flex;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
}

.chat-form textarea {
  flex: 1;
  resize: none;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  max-height: 160px;
}

.chat-form button {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0 18px;
  cursor: pointer;
  font-size: 14px;
}

.chat-form button:disabled {
  opacity: 0.5;
  cursor: default;
}

/* --- Capa de entrada: login, cuestionario y resultado --- */

.gate {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
  overflow-y: auto;
  z-index: 10;
}

.gate-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  margin: auto;
}

.gate-card.wide {
  max-width: 620px;
}

.brand {
  margin: 0 0 8px;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
}

.gate-sub {
  margin: 0 0 24px;
  color: var(--text-dim);
  line-height: 1.5;
}

.gate-card label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.gate-card input[type="text"],
.gate-card input[type="password"],
.gate-card textarea {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 16px;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  resize: vertical;
}

.gate-card input:focus,
.gate-card textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.gate-card button[type="submit"],
#result-start {
  width: 100%;
  padding: 11px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.gate-card button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: default;
}

.form-error {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #3a1d1d;
  color: #ffb4b4;
  font-size: 0.9rem;
}

.quiz-question {
  margin: 0 0 22px;
  padding: 0;
  border: none;
}

.quiz-question legend {
  padding: 0;
  margin-bottom: 10px;
  font-weight: 600;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  padding: 9px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
}

.quiz-option:hover {
  border-color: var(--accent);
}

.quiz-option input {
  accent-color: var(--accent);
  margin: 0;
}

.result-eyebrow {
  margin: 0 0 4px;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-model {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 20px 0 16px;
  padding: 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.result-label {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.result-model code {
  font-size: 1.1rem;
  color: var(--accent);
}

.linkish {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 6px;
  background: none;
  border: none;
  color: var(--text-dim);
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.linkish:hover {
  color: var(--text);
}

.alternatives {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.alternative {
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.alternative:hover {
  border-color: var(--accent);
}

.alternative.chosen {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Barra de usuario en la barra lateral --- */

.sidebar-brand {
  margin-bottom: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.user-bar {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.user-name {
  display: block;
  margin-bottom: 4px;
  font-size: 0.9rem;
  color: var(--text);
}

.user-bar .linkish {
  margin-top: 2px;
  text-align: left;
  font-size: 0.85rem;
}

/* --- Campo de contraseña con ojo --- */

.pass-field {
  position: relative;
}

.pass-field input {
  padding-right: 44px;
}

.eye {
  position: absolute;
  top: 9px;
  right: 8px;
  padding: 2px 6px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.4;
  cursor: pointer;
  opacity: 0.55;
}

.eye:hover {
  opacity: 0.9;
}

.eye.on {
  opacity: 1;
  color: var(--accent);
}

/* --- Cabecera del chat --- */

.chat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
}

.chat-header-title {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.chat-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 600;
  font-size: 14px;
}

.model-badge {
  flex-shrink: 0;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-dim);
  font-size: 11px;
}

.icon-btn {
  flex-shrink: 0;
  padding: 6px 9px;
  background: none;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.icon-btn:hover {
  border-color: var(--border);
  color: var(--text);
}

#menu-btn {
  display: none;
}

/* --- Bienvenida y tutorial --- */

.welcome {
  max-width: 760px;
  margin: auto;
  padding: 12px 4px 24px;
}

.welcome h2 {
  margin: 0 0 6px;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

.welcome-sub {
  margin: 0 0 20px;
  color: var(--text-dim);
  line-height: 1.5;
}

.tutorial {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-bottom: 24px;
}

.tip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 10px;
  padding: 12px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.tip-icon {
  grid-row: span 2;
  font-size: 1.2rem;
  line-height: 1.2;
}

.tip strong {
  font-size: 0.92rem;
}

.tip-body {
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.45;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 8px 13px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-dim);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--text);
}

/* --- Bloques de código --- */

.code-block {
  margin: 10px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--code-bg);
}

.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-copy {
  background: none;
  border: none;
  color: var(--text-dim);
  font: inherit;
  font-size: 11px;
  text-transform: none;
  letter-spacing: normal;
  cursor: pointer;
}

.code-copy:hover {
  color: var(--accent);
}

.code-block pre {
  margin: 0;
  padding: 12px;
  overflow-x: auto;
}

.code-block code {
  font-family: "JetBrains Mono", "Fira Code", ui-monospace, "Cascadia Code", Menlo, monospace;
  font-size: calc(var(--chat-size) - 2px);
  line-height: 1.5;
  white-space: pre;
}

/* --- Panel de personalización --- */

.settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 20;
  width: 320px;
  max-width: 90vw;
  height: 100%;
  overflow-y: auto;
  padding: 18px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.25);
}

.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.settings-head h2 {
  margin: 0;
  font-size: 1.05rem;
}

.setting {
  margin-bottom: 22px;
}

.setting-label {
  display: block;
  margin-bottom: 9px;
  font-size: 0.82rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.setting-label b {
  color: var(--accent);
  font-weight: 600;
}

.segmented {
  display: flex;
  gap: 6px;
}

.segmented button {
  flex: 1;
  padding: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-dim);
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}

.segmented button.on {
  border-color: var(--accent);
  color: var(--accent);
}

.swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.swatches button {
  width: 30px;
  height: 30px;
  padding: 0;
  background: var(--sw);
  border: 2px solid transparent;
  border-radius: 50%;
  cursor: pointer;
}

.swatches button.on {
  border-color: var(--text);
  box-shadow: 0 0 0 2px var(--bg-panel) inset;
}

.setting input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.check {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
}

.check input {
  accent-color: var(--accent);
}

/* --- Pantallas estrechas --- */

.sidebar-backdrop {
  display: none;
}

@media (max-width: 820px) {
  #menu-btn {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 15;
    height: 100%;
    width: 78vw;
    max-width: 300px;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 14;
    background: rgba(0, 0, 0, 0.5);
  }

  .messages {
    padding: 14px;
  }

  .row {
    max-width: 92%;
  }

  .chat-form {
    padding: 10px 12px;
  }

  .gate {
    padding: 16px;
    align-items: flex-start;
  }

  .gate-card {
    padding: 24px 20px;
  }

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

/* --- Móvil ----------------------------------------------------------------
   La barra de escribir era una fila de seis cosas —clip, Texto/Imagen, el
   cuadro, micrófono, burbuja y Enviar— y en 390 px de ancho el cuadro de texto
   se quedaba en veinte píxeles: inservible. En móvil se parte en dos alturas,
   el cuadro arriba a todo lo ancho y los botones debajo, que es como funciona
   cualquier aplicación de mensajería en un teléfono. */

@media (max-width: 640px) {
  .chat-form {
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    /* Hueco para la barra del sistema en los teléfonos que la superponen. */
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  }

  /* El cuadro de texto, primero y entero. */
  .chat-form textarea {
    order: -1;
    flex: 1 0 100%;
    width: 100%;
    min-width: 0;
    /* 16 px es el tamaño por debajo del cual los navegadores de móvil hacen
       zoom solos al tocar el campo, y luego la página se queda torcida. */
    font-size: 16px;
  }

  #send-btn {
    margin-left: auto;
  }

  .mode-switch {
    align-self: center;
  }

  /* Los cinco botones tienen que caber en UNA fila de 390 px: clip, el
     conmutador, micrófono, burbuja y Enviar. Sumado con los huecos va justo,
     así que se aprieta el relleno y no el tamaño donde se toca. */
  .chat-form {
    gap: 6px;
  }

  .mode-switch {
    gap: 0;
    padding: 2px;
  }

  .mode-switch button {
    padding: 0 10px;
    min-height: 36px;
    font-size: 0.8rem;
  }

  #send-btn {
    padding: 0 14px;
    min-height: 40px;
  }

  .icon-btn.attach,
  .icon-btn.mic,
  .icon-btn.talk {
    /* Cuadrados y del tamaño mínimo para acertar con el dedo. */
    flex: none;
    width: 40px;
    min-width: 40px;
    height: 40px;
    padding: 0;
  }

  /* Estas dos tiras se alinean con el ancho de las respuestas, que en móvil
     es toda la pantalla. */
  .docs-bar,
  .talk-bar {
    width: 100%;
  }

  .talk-bar {
    gap: 9px;
    padding: 8px 10px;
  }

  .talk-close {
    padding: 6px 8px;
  }

  .row {
    max-width: 100%;
  }

  .messages {
    padding: 12px 12px 4px;
  }

  /* El panel de personalizar, a pantalla completa: 320 px en un móvil deja
     una rendija de fondo que no sirve para nada y se toca sin querer. */
  .settings-panel {
    width: 100%;
    max-width: none;
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .model-badge {
    display: none;
  }

  .welcome h2 {
    font-size: 1.25rem;
  }

  /* Con el cuadro de texto ya en su propia fila, lo de abajo tiene que caber
     en una sola línea: se recortan los textos de los botones, no el espacio
     para tocarlos. */
  .mode-switch button {
    padding: 0 9px;
    font-size: 0.8rem;
  }

  #send-btn {
    padding: 0 16px;
  }

  .chat-header {
    padding: 8px 12px;
  }
}

.result-tagline {
  margin: -2px 0 4px;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.quiz-option input:disabled {
  opacity: 0.4;
}

.quiz-option:has(input:disabled) {
  opacity: 0.45;
  cursor: default;
}

.quiz-option:has(input:checked) {
  border-color: var(--accent);
}

/* --- Collage de fondo del chat: ramificación (divergencia) + red de nodos (IA) --- */

.chat {
  position: relative;
  isolation: isolate;
}

.chat-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  color: var(--accent);
}

/* Halos suaves del color de acento: dan profundidad sin tapar el texto. */
.chat-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.09;
  background:
    radial-gradient(45% 45% at 10% 48%, currentColor 0%, transparent 65%),
    radial-gradient(38% 38% at 85% 16%, currentColor 0%, transparent 68%),
    radial-gradient(34% 34% at 76% 88%, currentColor 0%, transparent 66%);
}

.collage {
  width: 100%;
  height: 100%;
  opacity: 0.38;
}

/* El collage se atenúa en el centro, que es por donde cae el texto, y queda
   con más presencia en los bordes. */
.chat-bg {
  -webkit-mask-image: radial-gradient(68% 58% at 52% 46%, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 1) 78%);
  mask-image: radial-gradient(68% 58% at 52% 46%, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 1) 78%);
}

:root[data-theme="light"] .collage {
  opacity: 0.3;
}

:root[data-theme="light"] .chat-bg::after {
  opacity: 0.13;
}

.messages {
  background: transparent;
}

/* El mismo lenguaje visual en la pantalla de entrada, solo con los halos. */
.gate {
  position: fixed;
  color: var(--accent);
}

.gate::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.12;
  background:
    radial-gradient(40% 40% at 18% 22%, currentColor 0%, transparent 70%),
    radial-gradient(36% 36% at 82% 78%, currentColor 0%, transparent 70%);
}

/* --- Modo imagen --- */

.mode-switch {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
  padding: 2px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  align-self: flex-end;
}

.mode-switch button {
  padding: 7px 12px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-dim);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.mode-switch button.on {
  background: var(--accent);
  color: #fff;
}

.bubble.has-image {
  padding: 6px;
}

.gen-image {
  margin: 0;
}

.gen-image img,
.gen-image video {
  display: block;
  max-width: 100%;
  width: 512px;
  border-radius: 9px;
}

.gen-image figcaption {
  padding: 7px 6px 2px;
  color: var(--text-dim);
  font-size: 0.75rem;
  line-height: 1.4;
}

/* --- Documentos adjuntos --- */

.docs-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 20px 0;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
}

.doc-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 6px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.82rem;
}

.doc-chip.truncated {
  border-color: #f59e0b;
}

.doc-name {
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc-chip small {
  color: var(--text-dim);
  font-size: 0.72rem;
}

.doc-remove {
  padding: 0 4px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.8rem;
  cursor: pointer;
}

.doc-remove:hover {
  color: var(--accent);
}

.icon-btn.attach {
  align-self: flex-end;
  padding: 9px 11px;
  border: 1px solid var(--border);
  font-size: 1rem;
}

.icon-btn.attach:disabled {
  opacity: 0.5;
  cursor: default;
}

/* --- Arrastrar y soltar documentos --- */

.dropzone {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(3px);
  animation: drop-in 0.18s ease-out;
}

@supports not (background: color-mix(in srgb, red 50%, transparent)) {
  .dropzone {
    background: rgba(20, 20, 20, 0.86);
  }
}

@keyframes drop-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.dropzone-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  max-width: 420px;
  padding: 38px 44px;
  text-align: center;
  color: var(--text);
  border: 2px dashed var(--accent);
  border-radius: 16px;
  background: var(--bg-panel);
  animation: card-in 0.22s cubic-bezier(0.2, 0.9, 0.3, 1.3);
}

@keyframes card-in {
  from { transform: scale(0.94); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.dropzone-card strong {
  font-size: 1.05rem;
}

.dropzone-card span {
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.45;
}

.drop-icon {
  width: 54px;
  height: 54px;
  color: var(--accent);
}

/* Mientras se arrastra: la flecha sube y baja y el borde late. */
.dropzone.over .drop-icon {
  animation: flecha 1.1s ease-in-out infinite;
}

.dropzone.over .dropzone-card {
  animation: card-in 0.22s cubic-bezier(0.2, 0.9, 0.3, 1.3), latido 1.6s ease-in-out infinite;
}

@keyframes flecha {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

@keyframes latido {
  0%, 100% { border-color: var(--accent); }
  50% { border-color: var(--text-dim); }
}

/* Mientras se leen los archivos: el icono gira, el borde deja de latir. */
.dropzone.working .drop-icon {
  animation: girar 1.1s linear infinite;
}

.dropzone.working .dropzone-card {
  border-style: solid;
}

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

@media (prefers-reduced-motion: reduce) {
  .dropzone,
  .dropzone-card,
  .dropzone.over .drop-icon,
  .dropzone.over .dropzone-card,
  .dropzone.working .drop-icon {
    animation: none;
  }
}

/* --- Documentos visibles dentro de la conversación --- */

.docs-card {
  align-self: stretch;
  max-width: 760px;
  width: 100%;
  margin: 0 auto 6px;
  padding: 14px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 12px;
}

.docs-card-head {
  margin-bottom: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.docs-card-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.docs-card-item {
  display: flex;
  align-items: baseline;
  gap: 9px;
  flex-wrap: wrap;
}

.docs-card-item strong {
  font-size: 0.92rem;
  word-break: break-all;
}

.docs-card-item small {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.docs-card-foot {
  margin-top: 11px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.78rem;
}

/* --- Memoria en el panel de personalización ------------------------------- */

.setting-hint {
  margin: 4px 0 8px;
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.45;
}

/* La barra dice de un vistazo cuánto queda antes de que empiece a olvidar. */
.mem-bar {
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  overflow: hidden;
}

.mem-bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.mem-bar.full i {
  background: #f59e0b;
}

.mem-bar.lleno i {
  background: #ef4444;
}

/* --- Barras de consumo ---------------------------------------------------- */

.uso {
  margin-bottom: 12px;
}

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

.uso-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 5px;
  font-size: 0.8rem;
}

.uso-head b {
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  font-weight: 600;
}

/* El detalle explica de qué se compone la barra: sin esto, un 40 % no le dice
   a nadie si lo que ocupa son sus imágenes o sus documentos. */
.uso small {
  display: block;
  margin-top: 5px;
  color: var(--text-dim);
  font-size: 0.72rem;
  line-height: 1.4;
}

.mem-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  max-height: 210px;
  overflow-y: auto;
}

.mem-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  line-height: 1.4;
}

.mem-list li:last-child {
  border-bottom: 0;
}

.mem-list span {
  flex: 1;
}

.mem-list button {
  flex: none;
  border: 0;
  background: none;
  cursor: pointer;
  padding: 0 2px;
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1;
}

.mem-list button:hover {
  color: #ef4444;
}

.mem-empty {
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 8px 0;
}

.mem-form {
  display: flex;
  gap: 6px;
  margin-top: 10px;
}

.mem-form input {
  flex: 1;
  min-width: 0;
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
}

.linkish.danger:hover {
  color: #ef4444;
}

/* --- Dictado -------------------------------------------------------------- */

.icon-btn.mic {
  font-size: 1.05rem;
  line-height: 1;
}

/* Rojo y latiendo: grabar tiene que verse desde el otro lado de la sala, y
   sobre todo tiene que verse que SIGUE grabando. */
.icon-btn.mic.grabando {
  color: #fff;
  background: #ef4444;
  animation: mic-late 1.2s ease-in-out infinite;
}

.icon-btn.mic.pensando {
  opacity: 0.55;
  pointer-events: none;
}

@keyframes mic-late {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.55); }
  60% { box-shadow: 0 0 0 7px rgba(239, 68, 68, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .icon-btn.mic.grabando {
    animation: none;
  }
}


/* --- Modo conversación ---------------------------------------------------- */
/* Una tira dentro de la barra, encima del cuadro de texto, como los adjuntos.
   El chat se sigue viendo y leyendo entero mientras se habla: lo hablado cae
   ahí como cualquier otro mensaje. */

.talk-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(100%, var(--chat-width, 70%));
  margin: 0 auto 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--panel, transparent);
}

.talk-texts {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.talk-state {
  font-size: 0.82rem;
  color: var(--text);
}

.talk-said {
  font-size: 0.76rem;
  color: var(--text-dim);
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.talk-close {
  flex: none;
  border: 1px solid var(--border);
  background: none;
  color: var(--text-dim);
  border-radius: 7px;
  padding: 5px 10px;
  font: inherit;
  font-size: 0.76rem;
  cursor: pointer;
}

.talk-close:hover {
  color: var(--text);
  border-color: var(--text-dim);
}

.talk-bubble {
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  color: #fff;
  background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #000));
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

/* Escuchando late despacio; cuando de verdad entra sonido, se hincha. Es lo
   único que dice, sin leer nada, que el micrófono te está cogiendo. */
.talk-bar[data-estado="escuchando"] .talk-bubble {
  animation: talk-latido 2.4s ease-in-out infinite;
}

.talk-bar[data-estado="escuchando"][data-oyendo="1"] .talk-bubble {
  transform: scale(1.14);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 28%, transparent);
}

.talk-bar[data-estado="pensando"] .talk-bubble,
.talk-bar[data-estado="transcribiendo"] .talk-bubble {
  animation: talk-respira 1.4s ease-in-out infinite;
  opacity: 0.85;
}

.talk-bar[data-estado="hablando"] .talk-bubble {
  animation: talk-ondas 1.6s ease-out infinite;
}

@keyframes talk-latido {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

@keyframes talk-respira {
  0%, 100% { transform: scale(0.94); }
  50% { transform: scale(1.04); }
}

@keyframes talk-ondas {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 50%, transparent); }
  100% { box-shadow: 0 0 0 16px transparent; }
}

@media (prefers-reduced-motion: reduce) {
  .talk-bubble {
    animation: none !important;
  }
}

.icon-btn.talk {
  font-size: 1.05rem;
  line-height: 1;
}

/* Encendido: el botón se queda marcado mientras dura la conversación. */
.icon-btn.talk.on {
  color: #fff;
  background: var(--accent);
}

/* --- Selector de micrófono ------------------------------------------------ */

#set-mic {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
}

.mic-test {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 9px;
}

.mic-test .mem-bar {
  flex: 1;
}

/* La barra sube con la voz. Verde a secas: aquí no se mide una cuota, se
   comprueba que algo llega. */
#mic-level {
  background: #10b981;
  transition: width 0.08s linear;
}