/* livia-brain · Dirección X (editorial luminoso) — S30
   Tokens y overrides scoped a .chat-screen.
   NO toca :root ni reglas globales — admin.html (que importa style.css)
   queda intacto porque no carga este archivo.

   Carga DESPUÉS de style.css y chat-markers.css para ganar specificity.
   Todos los selectores prefijan `.chat-screen` para vencer las reglas
   no-scoped existentes en style.css. */

/* =========================================================
   1. Tokens scoped (sección 10 del DESIGN_TOKENS_LIVIA_BRAIN_X.md)
   ========================================================= */

.chat-screen {
  /* Fondos */
  --bg-canvas: #EDF2F8;
  --bg-sidebar: #EDF2F8;
  --bg-surface: #ffffff;
  --bg-elevated: #F2F7FA;

  /* Texto */
  --text-primary: #13252d;
  --text-secondary: #2c3e44;
  --text-tertiary: #54606B;
  --text-on-dark: #EDF2F8;

  /* Acento Aduax */
  --accent: #ff551a;
  --accent-soft: rgba(255, 85, 26, 0.06);
  --accent-deep: #13252d;

  /* Bordes */
  --border-hairline: #DCE2E7;

  /* Semáforo */
  --status-ok-bg: #d4ead8;
  --status-ok-fg: #2c5e3a;
  --status-warn-bg: #E2EDF5;
  --status-warn-fg: #2E4452;
  --status-crit-bg: #f7d6cc;
  --status-crit-fg: #8a2912;
  --status-neutral-bg: #DCE2E7;
  --status-neutral-fg: #54606B;

  /* Contexto histórico (amber) */
  --amber-bg: #E2EDF5;
  --amber-border: #3E6E8E;
  --amber-text-strong: #2E4452;
  --amber-text-body: #2E4452;

  /* Tipografía (scoped, no pisa --font-display global usado por admin) */
  --font-display-x: 'Newsreader', Georgia, serif;
  --font-body-x: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono-x: 'IBM Plex Mono', ui-monospace, monospace;

  /* Layout */
  --radius-sm-x: 2px;
  --radius-md-x: 3px;
  --radius-lg-x: 4px;
  --sidebar-width-x: 215px;
}

/* Reset light forzado para el chat (sección 8 — no dark mode esta versión).
   Aplicamos también al body para evitar leak de --bg-soft dark si el usuario
   tenía data-theme="dark" guardado en localStorage de visita previa. */
body[data-view="chat"],
body[data-view="chat"] .chat-screen {
  background: #EDF2F8;  /* --bg-canvas literal — body no hereda el scoped var */
  color: #13252d;
}

/* Override del grid principal: sidebar 215px en lugar de 280px global. */
.chat-screen.chat-screen {  /* doble clase = bumps specificity sin :root */
  grid-template-columns: var(--sidebar-width-x) 1fr;
}
.chat-screen.is-collapsed.is-collapsed {
  grid-template-columns: 0px 1fr;
}

/* =========================================================
   2. Sidebar (Bloque 2)
   ========================================================= */

.chat-screen .sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-hairline);
}

.chat-screen .sidebar-header {
  border-bottom: 1px solid var(--border-hairline);
}

.chat-screen .sidebar-mark {
  font-family: var(--font-display-x);
  color: var(--text-primary);
}
.chat-screen .sidebar-mark em {
  font-style: italic;
  color: var(--accent);
}

.chat-screen .sidebar-newchat {
  background: var(--accent-deep);
  color: var(--text-on-dark);
  border: 0;
  border-radius: var(--radius-md-x);
  font-family: var(--font-body-x);
  font-weight: 500;
}
.chat-screen .sidebar-newchat:hover {
  background: #1f3a45;  /* accent-deep ligeramente clarito */
  color: var(--text-on-dark);
  border-color: transparent;
}

.chat-screen .sidebar-search {
  margin: 0 16px 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md-x);
}
.chat-screen .sidebar-search svg {
  width: 13px;
  height: 13px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}
.chat-screen .sidebar-search input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  font-family: var(--font-body-x);
  font-size: 12px;
  color: var(--text-primary);
}
.chat-screen .sidebar-search input::placeholder {
  color: var(--text-tertiary);
}

.chat-screen .sidebar-section-label {
  font-family: var(--font-body-x);
  color: var(--text-tertiary);
  letter-spacing: 0.12em;
  font-weight: 500;
  font-size: 11px;
}

.chat-screen .sidebar-history-empty {
  font-family: var(--font-display-x);
  color: var(--text-tertiary);
}

.chat-screen .history-item {
  border-left: 2px solid transparent;
  background: transparent;
  border-radius: 0;
  padding: 9px 10px;
}
.chat-screen .history-item:hover {
  background: rgba(255, 85, 26, 0.04);
}
.chat-screen .history-item.is-active {
  background: var(--bg-surface);
  border-left: 2px solid var(--accent);
}
.chat-screen .history-title {
  font-family: var(--font-body-x);
  color: var(--text-secondary);
  font-size: 12px;
}
.chat-screen .history-item.is-active .history-title {
  color: var(--text-primary);
  font-weight: 500;
}
.chat-screen .history-meta {
  font-family: var(--font-mono-x);
  color: var(--text-tertiary);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: none;
}

.chat-screen .sidebar-footer {
  border-top: 1px solid var(--border-hairline);
}

.chat-screen .user-avatar {
  width: 30px;
  height: 30px;
  background: var(--accent);
  color: var(--text-on-dark);
  font-family: var(--font-display-x);
  font-weight: 500;
  font-size: 12px;
}
.chat-screen .user-avatar.is-user {
  background: var(--text-primary);
  color: var(--text-on-dark);
}

.chat-screen .user-email {
  font-family: var(--font-body-x);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
}
.chat-screen .user-role {
  font-family: var(--font-body-x);
  color: var(--text-tertiary);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.chat-screen .sidebar-action {
  background: transparent;
  border: 1px solid var(--border-hairline);
  color: var(--text-tertiary);
  border-radius: var(--radius-md-x);
  font-family: var(--font-body-x);
  letter-spacing: 0.04em;
}
.chat-screen .sidebar-action:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* Ocultar theme toggle (sección 8 tokens — no dark esta versión). */
.chat-screen #themeToggleBtn {
  display: none !important;
}

/* =========================================================
   3. Main + header (background canvas)
   ========================================================= */

.chat-screen .main {
  background: var(--bg-canvas);
}

.chat-screen .main-header {
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-hairline);
}

.chat-screen .conv-title {
  font-family: var(--font-display-x);
  color: var(--text-secondary);
  font-size: 14px;
  font-style: italic;
}

.chat-screen .sidebar-toggle {
  border: 1px solid var(--border-hairline);
  color: var(--text-tertiary);
  background: transparent;
  border-radius: var(--radius-md-x);
}
.chat-screen .sidebar-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.chat-screen .chat-main {
  background: var(--bg-canvas);
}

/* =========================================================
   4. Hero / home (Bloque 4)
   ========================================================= */

.chat-screen .hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 50px 38px 32px;
  display: flex;
  flex-direction: column;
}

.chat-screen .hero-eyebrow {
  font-family: var(--font-body-x);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.chat-screen .hero-subdate {
  font-family: var(--font-body-x);
  font-size: 11px;
  color: var(--text-tertiary);
  margin-bottom: 28px;
}

.chat-screen .hero-title {
  font-family: var(--font-display-x);
  font-size: 42px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--text-primary);
  margin: 0 0 14px 0;
}
.chat-screen .hero-title em {
  color: var(--accent);
  font-style: italic;
}

.chat-screen .hero-sub {
  font-family: var(--font-display-x);
  font-size: 14px;
  font-style: italic;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 460px;
  margin: 0 0 32px 0;
}

.chat-screen .quick-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  max-width: 480px;
  border-top: 1px solid var(--border-hairline);
  border-left: 1px solid var(--border-hairline);
  margin-bottom: 36px;
}
.chat-screen .qa-card {
  background: transparent;
  border: 0;
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  padding: 16px 18px;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body-x);
  transition: background 0.15s ease;
}
.chat-screen .qa-card:hover {
  background: var(--bg-elevated);
}
.chat-screen .qa-kicker {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 6px;
}
.chat-screen .qa-title {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 2px;
}
.chat-screen .qa-desc {
  font-size: 11px;
  color: var(--text-tertiary);
}

.chat-screen .corpus-stats {
  display: flex;
  gap: 28px;
  border-top: 1px solid var(--border-hairline);
  padding-top: 18px;
  margin-top: auto;
  font-family: var(--font-display-x);
  font-size: 11px;
  color: var(--text-tertiary);
}
.chat-screen .corpus-stats strong {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
  font-family: var(--font-display-x);
}

/* =========================================================
   5. Mensajes (Bloque 5 — wiring; estilos finos en chat-markers.css)
   ========================================================= */

.chat-screen .conv-area {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 38px 40px;
}

.chat-screen .msg {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.chat-screen .msg-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display-x);
  font-weight: 500;
  font-size: 12px;
  flex-shrink: 0;
}
.chat-screen .msg-avatar-user {
  background: var(--text-primary);
  color: var(--text-on-dark);
}
.chat-screen .msg-avatar-livia {
  background: var(--accent);
  color: var(--text-on-dark);
}
.chat-screen .msg-avatar-livia span {
  font-family: var(--font-display-x);
  font-style: italic;
  font-weight: 500;
  font-size: 16px;
  line-height: 1;
}

.chat-screen .msg-meta {
  font-family: var(--font-body-x);
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.chat-screen .msg-author {
  font-weight: 500;
  color: var(--text-secondary);
}
.chat-screen .msg-author.is-livia {
  color: var(--accent);
  font-style: italic;
}
.chat-screen .msg-time {
  font-family: var(--font-mono-x);
  color: var(--text-tertiary);
}
.chat-screen .msg-rule {
  display: none;
}

.chat-screen .msg-user .msg-body {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 4px 4px 4px 1px;
  padding: 12px 16px;
  font-family: var(--font-body-x);
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.chat-screen .msg-livia .msg-body {
  font-family: var(--font-body-x);
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.7;
}

.chat-screen .msg-actions {
  margin-top: 18px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.chat-screen .msg-action {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md-x);
  padding: 5px 11px;
  font-family: var(--font-body-x);
  font-size: 11px;
  color: var(--text-primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.chat-screen .msg-action:hover {
  background: var(--bg-elevated);
  border-color: var(--accent);
  color: var(--accent);
}
.chat-screen .msg-action svg {
  width: 12px;
  height: 12px;
}
.chat-screen .msg-action.fb-sent {
  color: var(--accent);
  border-color: var(--accent);
}

/* Citations block — keeps existing JS class, override visual to citation-pill. */
.chat-screen .citations-block {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border-hairline);
}
.chat-screen .citations-label {
  font-family: var(--font-body-x);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  font-weight: 500;
  margin-bottom: 10px;
}
.chat-screen .citations-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chat-screen .citation {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md-x);
  padding: 7px 11px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono-x);
  font-size: 12px;
  color: var(--text-primary);
}
.chat-screen .citation-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  background: var(--text-primary);
  color: var(--text-on-dark);
  border-radius: var(--radius-sm-x);
  font-family: var(--font-mono-x);
  font-size: 10px;
  font-weight: 500;
  margin-right: 2px;
}

/* Streaming cursor */
.chat-screen .streaming-cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s infinite;
}

/* =========================================================
   6. Composer + paperclip (Bloque 6)
   ========================================================= */

.chat-screen .composer-wrap {
  background: var(--bg-canvas);
  border-top: 1px solid var(--border-hairline);
  padding: 16px 38px 20px;
  position: relative;  /* for dnd-overlay */
}

.chat-screen .composer {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg-x);
  transition: border-color 0.15s ease;
}
.chat-screen .composer:focus-within {
  border-color: var(--accent);
  box-shadow: none;
}

/* S30-fix: en empty state (sin conversación), el composer recibe énfasis
   visual para que nuevos usuarios sepan dónde escribir. Se desactiva
   automáticamente al iniciar conversación. */
.chat-screen.is-empty-state .composer {
  border: 2px solid var(--accent);
  box-shadow: 0 6px 24px rgba(255, 85, 26, 0.12);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.chat-screen.is-empty-state .composer textarea::placeholder {
  color: var(--text-secondary);
  font-style: normal;
  font-weight: 500;
  opacity: 0.85;
}

.chat-screen .composer-status {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-hairline);
  font-family: var(--font-body-x);
  color: var(--text-secondary);
}
.chat-screen .composer-status.is-error {
  background: var(--status-crit-bg);
  color: var(--status-crit-fg);
  border-left: 2px solid var(--status-crit-fg);
}

.chat-screen .composer-input-row {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.chat-screen .btn-paperclip {
  background: transparent;
  border: 0;
  border-right: 1px solid var(--border-hairline);
  color: var(--text-tertiary);
  padding: 0 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease;
  flex-shrink: 0;
}
.chat-screen .btn-paperclip:hover {
  color: var(--accent);
}
.chat-screen .btn-paperclip.has-files {
  color: var(--accent);
}
.chat-screen .btn-paperclip svg {
  width: 16px;
  height: 16px;
}

.chat-screen .composer textarea {
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body-x);
  font-size: 14px;
}
.chat-screen .composer textarea::placeholder {
  color: var(--text-tertiary);
  font-family: var(--font-display-x);
  font-style: italic;
}

.chat-screen .composer-tone {
  background: transparent;
  border: 0;
  border-left: 1px solid var(--border-hairline);
  color: var(--text-tertiary);
  font-family: var(--font-body-x);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: none;
}
.chat-screen .composer-tone:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
.chat-screen .composer-tone.is-active {
  color: var(--accent);
}

.chat-screen .composer-send {
  background: var(--accent);
  color: var(--text-on-dark);
  border: 0;
  border-radius: 0;
  font-family: var(--font-body-x);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.chat-screen .composer-send:hover {
  background: #e64a17;  /* accent darker */
}
.chat-screen .composer-send:disabled {
  background: var(--border-hairline);
  color: var(--text-tertiary);
}

.chat-screen .composer-meta {
  max-width: 720px;
  margin: 8px auto 0;
  font-family: var(--font-mono-x);
  color: var(--text-tertiary);
  font-size: 10px;
  letter-spacing: 0.04em;
}
.chat-screen .composer-hint kbd {
  font-family: var(--font-mono-x);
  background: var(--bg-elevated);
  border: 1px solid var(--border-hairline);
  color: var(--text-tertiary);
  border-radius: var(--radius-sm-x);
}

/* Attachments list */
.chat-screen .attachments-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px 0;
}
.chat-screen .attachments-list:empty {
  display: none;
}

.chat-screen .attachment-chip {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md-x);
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 280px;
  font-family: var(--font-body-x);
}
.chat-screen .attachment-icon {
  width: 26px;
  height: 30px;
  border-radius: var(--radius-sm-x);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-on-dark);
  font-family: var(--font-mono-x);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.chat-screen .attachment-icon-pdf {
  background: var(--accent);
}
.chat-screen .attachment-icon-xlsx {
  background: var(--accent-deep);
}
.chat-screen .attachment-icon-other {
  background: var(--text-tertiary);
}
.chat-screen .attachment-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}
.chat-screen .attachment-name {
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chat-screen .attachment-meta {
  display: flex;
  gap: 8px;
  font-size: 10px;
  color: var(--text-tertiary);
  margin-top: 2px;
}
.chat-screen .attachment-state-analyzed {
  color: var(--status-ok-fg);
}
.chat-screen .attachment-state-processing {
  color: var(--status-warn-fg);
}
.chat-screen .attachment-state-error {
  color: var(--status-crit-fg);
}
.chat-screen .attachment-remove {
  background: transparent;
  border: 0;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px 4px;
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
}
.chat-screen .attachment-remove:hover {
  color: var(--status-crit-fg);
}

/* Drag-and-drop overlay */
.chat-screen .dnd-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  background: var(--accent-soft);
  border: 2px dashed var(--accent);
  border-radius: var(--radius-md-x);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  pointer-events: none;
  margin: 8px 24px;
}
.chat-screen .dnd-overlay svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
}
.chat-screen .dnd-overlay-title {
  font-family: var(--font-display-x);
  font-size: 14px;
  color: var(--text-primary);
  font-style: italic;
}
.chat-screen .dnd-overlay-meta {
  font-family: var(--font-body-x);
  font-size: 11px;
  color: var(--text-tertiary);
}

/* =========================================================
   7. Tool trail (existing component, light retouch)
   ========================================================= */
.chat-screen .tool-trail {
  font-family: var(--font-mono-x);
  font-size: 11px;
  color: var(--text-tertiary);
  margin: 8px 0 0;
}
.chat-screen .tool-call {
  display: inline-block;
  background: var(--bg-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm-x);
  padding: 3px 8px;
  margin-right: 6px;
  margin-bottom: 4px;
}
.chat-screen .tool-call em {
  color: var(--accent);
  font-style: italic;
}

/* =========================================================
   7a. Layout C (S32 — Composer "viajero" dentro del flow del chat)
   - Lock viewport: contiene scroll en chat-main, NO body
   - Grid simple: header / chat-main (1fr); composer vive DENTRO del chat-main
   - Composer SIN border ni fondo separado: se integra al flow de mensajes
   override del style.css; chat-tokens.css carga después.
   ========================================================= */
.chat-screen {
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}
body[data-view="chat"] {
  overflow: hidden;
}
.chat-screen .main {
  grid-template-rows: auto 1fr;
}
.chat-screen .main-header { grid-row: 1; }
.chat-screen .chat-main { grid-row: 2; }
.chat-screen .composer-wrap {
  border-top: none;
  border-bottom: none;
  background: transparent;
  max-width: 880px;
  margin: 0 auto;
  padding: 16px 32px 40px;
}

/* =========================================================
   7c. Logo home link (S32 — click al logo vuelve a /)
   ========================================================= */
.chat-screen .sidebar-header .aduax-mark {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.15s ease;
}
.chat-screen .sidebar-header .aduax-mark:hover {
  opacity: 0.7;
}

/* =========================================================
   8. Spinner override (no-op shadows, accent ring)
   ========================================================= */
.chat-screen .stream-spinner {
  border-color: var(--border-hairline);
  border-top-color: var(--accent);
}

/* =========================================================
   9. Responsive (sidebar móvil — manteniendo lo de style.css)
   ========================================================= */
@media (max-width: 900px) {
  .chat-screen .hero {
    padding: 36px 22px 24px;
  }
  .chat-screen .hero-title {
    font-size: 32px;
  }
  .chat-screen .composer-wrap {
    padding: 12px 18px 14px;
  }
  .chat-screen .conv-area {
    padding: 22px 18px 32px;
  }
}