/* ==========================================================================
   Capacitación Práctica en Inteligencia Artificial (4 Días)
   Diseño de Serenidad Visual: Verde Salvia, Pizarra y Lino Cálido
   ========================================================================== */

:root {
  --color-primary: #2d5a4c;
  --color-primary-light: #417d6b;
  --color-primary-dark: #1b3d32;
  --color-primary-subtle: #e8f2ee;
  
  --color-instructor: #92400e;
  --color-instructor-bg: #fffbeb;
  --color-instructor-border: #fcd34d;

  --color-accent: #2563eb;
  --color-accent-subtle: #eff6ff;

  --bg-app: #f8faf9;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #f1f5f3;

  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --border-light: #e2e8f0;
  --border-focus: #2d5a4c;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --transition: all 0.2s ease-in-out;
}

[data-theme="dark"] {
  --bg-app: #121816;
  --bg-surface: #1a221f;
  --bg-surface-elevated: #222d29;
  --bg-subtle: #16201c;

  --color-primary-subtle: #1e2e28;
  --color-primary-light: #529b85;

  --color-instructor: #f59e0b;
  --color-instructor-bg: #2d2412;
  --color-instructor-border: #78350f;

  --text-main: #e2e8f0;
  --text-muted: #94a3b8;

  --border-light: #2d3b35;
  --border-focus: #529b85;

  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 20;
  transition: var(--transition);
}

.brand {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.brand-text small {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
}

/* Selector de Rol */
.role-switch-container {
  padding: 1rem 1.25rem;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
}

.role-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  display: block;
}

.role-switcher {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 3px;
}

.role-btn {
  background: transparent;
  border: none;
  padding: 0.45rem 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.role-btn.active {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  font-weight: 600;
}

.role-btn.instructor-active {
  background-color: #b45309;
  color: var(--text-inverse);
}

/* Navegación */
.nav-menu {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  list-style: none;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover {
  background-color: var(--bg-subtle);
  color: var(--color-primary);
}

.nav-link.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  font-weight: 600;
}

.nav-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background-color: var(--border-light);
  color: var(--text-muted);
}

.nav-link.active .nav-badge {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Topbar */
.topbar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-light);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.1rem;
}

.breadcrumbs {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.breadcrumbs strong {
  color: var(--text-main);
  margin-left: 0.4rem;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.status-pill {
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}

.status-pill.learning {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
}

.status-pill.teaching {
  background-color: var(--color-instructor-bg);
  color: var(--color-instructor);
  border: 1px solid var(--color-instructor-border);
}

/* Content Container */
.content {
  padding: 2rem;
  max-width:100%;
  margin: 0 auto;
  width: 100%;
}

/* Secciones / Vistas */
.page-view {
  display: none;
}

.page-view.active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Banner de Modo Instructor */
.instructor-banner {
  display: none;
  background-color: var(--color-instructor-bg);
  border: 1px solid var(--color-instructor-border);
  border-left: 4px solid var(--color-instructor);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

body.instructor-mode .instructor-banner {
  display: block;
}

.instructor-banner h3 {
  color: var(--color-instructor);
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.instructor-banner p {
  font-size: 0.88rem;
  color: #78350f;
}

[data-theme="dark"] .instructor-banner p {
  color: #fde68a;
}

/* Bloques del Instructor dentro de los temas */
.instructor-guide-card {
  display: none;
  background-color: var(--color-instructor-bg);
  border: 1px solid var(--color-instructor-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 1.5rem 0;
}

body.instructor-mode .instructor-guide-card {
  display: block;
  animation: fadeIn 0.2s ease-in;
}

.instructor-guide-card .card-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--color-instructor);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.instructor-guide-card h4 {
  color: var(--color-instructor);
  font-size: 0.98rem;
  margin-bottom: 0.5rem;
}

.instructor-guide-card ul {
  padding-left: 1.2rem;
  font-size: 0.88rem;
}

.instructor-guide-card li {
  margin-bottom: 0.35rem;
}

/* Hero Section */
.hero-card {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-subtle) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.hero-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.hero-card h2 {
  font-size: 1.85rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.hero-card p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width:100%;
  margin-bottom: 1.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}

.stat-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 1rem;
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
}

.stat-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Grillas y Tarjetas de Contenido */
.module-sessions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 900px) {
  .module-sessions {
    grid-template-columns: 1fr;
  }
}

.session-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.session-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.session-time {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.session-card h3 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.session-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.topic-list {
  list-style: none;
  margin-bottom: 1.25rem;
  flex: 1;
}

.topic-list li {
  font-size: 0.88rem;
  padding: 0.4rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.topic-list li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: bold;
}

/* Cajas de Código y Prompts */
.prompt-box {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin: 1.25rem 0;
  overflow: hidden;
}

.prompt-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 1rem;
  background-color: var(--border-light);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.copy-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition);
}

.copy-btn:hover {
  background-color: var(--color-primary);
  color: white;
}

.prompt-content {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
}

/* Herramienta Interactiva: Constructor de Prompts R-C-I-R-F */
.tool-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

.tool-container h3 {
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-container p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.form-group textarea, .form-group input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition);
}

.form-group textarea:focus, .form-group input:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
}

.tool-output {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}

/* Temporizador de Aula */
.timer-widget {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.timer-info h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.timer-info p {
  font-size: 0.85rem;
  opacity: 0.85;
}

.timer-controls {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.timer-display {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 2px;
  background: rgba(0,0,0,0.25);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-sm);
}

.timer-buttons {
  display: flex;
  gap: 0.5rem;
}

.timer-btn {
  background: white;
  color: var(--color-primary-dark);
  border: none;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.timer-btn:hover {
  background: var(--color-primary-subtle);
}

.timer-presets {
  display: flex;
  gap: 0.35rem;
}

.preset-btn {
  background: rgba(255,255,255,0.2);
  color: white;
  border: none;
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
}

.preset-btn:hover {
  background: rgba(255,255,255,0.35);
}

/* Cronograma Horario Tabla */
.schedule-table-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 2rem;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
}

.schedule-table th, .schedule-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.88rem;
}

.schedule-table th {
  background: var(--bg-subtle);
  font-weight: 600;
  color: var(--text-muted);
}

.schedule-table tr.break-row {
  background-color: var(--color-instructor-bg);
  font-style: italic;
  color: var(--color-instructor);
}

/* Materiales y Tarjetas de Descarga */
.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.material-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.material-card h4 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.material-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.material-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Módulo Gemini Canvas Lab & Resultados Esperados
   ========================================================================== */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  position: relative;
  transition: var(--transition);
}

.step-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.step-card h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.step-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Tab bar para las 6 posibilidades */
.canvas-tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0;
  border-bottom: 2px solid var(--border-light);
  padding-bottom: 0.75rem;
}

.canvas-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.canvas-tab:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
  background: var(--color-primary-subtle);
}

.canvas-tab.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Split screen del simulador */
.canvas-split-container {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 1.25rem;
  align-items: stretch;
  margin-top: 1rem;
}

@media (max-width: 1024px) {
  .canvas-split-container {
    grid-template-columns: 1fr;
  }
}

/* Columna Izquierda: Chat de Gemini */
.canvas-chat-pane {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.canvas-chat-header {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-subtle);
}

.gemini-brand-indicator {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.sparkle-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.status-online {
  display: block;
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
}

.canvas-chat-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 1;
}

.chat-bubble {
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.88rem;
  line-height: 1.55;
}

.bubble-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.user-bubble {
  background: var(--color-primary-subtle);
  border-left: 3px solid var(--color-primary);
  color: var(--text-main);
}

.user-bubble .bubble-tag {
  color: var(--color-primary);
}

.ai-bubble {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  color: var(--text-main);
}

.ai-bubble .bubble-tag {
  color: var(--text-muted);
}

.bubble-text {
  white-space: pre-wrap;
  font-family: inherit;
  margin-bottom: 0.75rem;
}

.bubble-actions {
  display: flex;
  justify-content: flex-end;
}

.canvas-chat-footer {
  padding: 0.9rem 1.25rem;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
  font-size: 0.82rem;
}

.tip-label {
  font-weight: 600;
  color: var(--text-main);
  display: block;
  margin-bottom: 0.35rem;
}

.prompt-variation-box {
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.45;
}

/* Columna Derecha: Lienzo Canvas */
.canvas-editor-pane {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.canvas-editor-topbar {
  padding: 0.8rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.canvas-doc-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--text-main);
}

.canvas-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.canvas-action-pill {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 0.3rem 0.7rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.canvas-action-pill:hover {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.canvas-action-pill.btn-docs {
  background: #1a73e8;
  color: #ffffff;
  border-color: #1a73e8;
}

.canvas-action-pill.btn-sheets {
  background: #0f9d58;
  color: #ffffff;
  border-color: #0f9d58;
}

/* Sub-pestañas del modo de visualización */
.canvas-view-mode-tabs {
  display: flex;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
  padding: 0.4rem 0.75rem;
  gap: 0.4rem;
  overflow-x: auto;
}

.view-mode-btn {
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.view-mode-btn:hover {
  color: var(--text-main);
  background: rgba(0, 0, 0, 0.04);
}

.view-mode-btn.active {
  background: var(--bg-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.canvas-view-content {
  padding: 1.25rem;
  flex: 1;
}

.view-panel {
  display: none;
}

.view-panel.active {
  display: block;
}

/* Tarjeta de Imagen de Resultado Esperado */
.canvas-image-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--bg-subtle);
}

.image-wrapper {
  overflow: hidden;
  background: #0f172a;
}

.result-zoomable-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.result-zoomable-img:hover {
  transform: scale(1.02);
  cursor: zoom-in;
}

.image-caption-bar {
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Bloques interactivos y claves de éxito */
.interactive-preview-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-size: 0.88rem;
  line-height: 1.6;
  max-height: 480px;
  overflow-y: auto;
}

.insights-box {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.insight-card {
  background: var(--bg-subtle);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 0.85rem;
}

.insight-card h5 {
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
  color: var(--color-primary);
}

/* Acordeón de Resultados Esperados en los Días */
.expected-result-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-top: 1.25rem;
  overflow: hidden;
  transition: var(--transition);
}

.expected-result-header {
  padding: 0.9rem 1.25rem;
  background: var(--bg-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.expected-result-header h4 {
  font-size: 0.92rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
}

.toggle-arrow {
  transition: transform 0.2s ease;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.expected-result-card.open .toggle-arrow {
  transform: rotate(180deg);
}

.expected-result-body {
  padding: 1.25rem;
  display: none;
  border-top: 1px solid var(--border-light);
}

.expected-result-card.open .expected-result-body {
  display: block;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.75rem;
}

@media (max-width: 768px) {
  .comparison-grid {
    grid-template-columns: 1fr;
  }
}

.comparison-col {
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.5;
}

.col-good {
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-light);
}

.col-bad {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

[data-theme="dark"] .col-bad {
  background: #2a1215;
  border-color: #7f1d1d;
  color: #fca5a5;
}

.col-title {
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -280px;
  }
  .sidebar.open {
    left: 0;
  }
  .menu-toggle {
    display: block;
  }
  .content {
    padding: 1.25rem;
  }
  .timer-widget {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
}

/* ==========================================================================
   Modales Accesibles, Visor Lightbox y Modo Inmersivo de Gemini Canvas
   ========================================================================== */

.btn-canvas-fullscreen {
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-canvas-fullscreen:hover {
  background: var(--color-primary);
  color: #ffffff;
}

#canvas-simulator-module.is-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 1500;
  margin: 0;
  border-radius: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 1.5rem;
  background: var(--bg-app);
  box-shadow: none;
}

/* Overlay interactivo en la tarjeta de imagen */
.image-wrapper {
  position: relative;
  cursor: pointer;
}

.image-zoom-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.image-wrapper:hover .image-zoom-overlay,
.image-wrapper:focus .image-zoom-overlay {
  opacity: 1;
}

.zoom-pill {
  background: var(--color-primary);
  color: #ffffff;
  padding: 0.45rem 0.95rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-open-lightbox {
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-open-lightbox:hover {
  background: var(--color-primary);
  color: #ffffff;
}

/* Modales Base (WAI-ARIA Dialog) */
.canvas-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(5px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.canvas-modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.canvas-modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96);
  transition: transform 0.25s ease;
}

.canvas-modal-backdrop.is-open .canvas-modal-dialog {
  transform: scale(1);
}

.canvas-modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-subtle);
}

.canvas-modal-title-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.modal-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.canvas-modal-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

.canvas-modal-subtitle {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.canvas-modal-close {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  line-height: 1;
}

.canvas-modal-close:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

.canvas-modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}

/* Lightbox de Alta Resolución */
.canvas-lightbox-dialog {
  max-width: 1120px;
  max-height: 94vh;
  background: #0f172a;
  border-color: #334155;
}

.canvas-lightbox-dialog .canvas-modal-header {
  background: #1e293b;
  border-color: #334155;
}

.canvas-lightbox-dialog .canvas-modal-title {
  color: #f8faf9;
}

.canvas-lightbox-dialog .canvas-modal-subtitle {
  color: #94a3b8;
}

.lightbox-toolbar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.modal-tool-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.modal-tool-btn:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.zoom-indicator {
  font-size: 0.8rem;
  color: #cbd5e1;
  min-width: 48px;
  text-align: center;
  font-family: var(--font-mono);
  font-weight: 600;
}

.lightbox-body {
  padding: 0;
  background: #090d16;
  display: flex;
  flex-direction: column;
}

.lightbox-stage {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  min-height: 480px;
}

.lightbox-img {
  max-width: 100%;
  max-height: 68vh;
  object-fit: contain;
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
  border-radius: 6px;
}

.lightbox-footer-info {
  padding: 0.75rem 1.25rem;
  background: #1e293b;
  color: #cbd5e1;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-top: 1px solid #334155;
}

/* Laboratorio de Contraste WCAG 2.2 AA */
.color-swatch-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.15);
  vertical-align: middle;
  margin-right: 4px;
}

.contrast-calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
  background: var(--bg-subtle);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

@media (max-width: 600px) {
  .contrast-calc-grid {
    grid-template-columns: 1fr;
  }
}

.contrast-calc-input-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.contrast-calc-input-group input[type="color"] {
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.contrast-calc-input-group input[type="text"] {
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-main);
  font-weight: 600;
}

.contrast-preview-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.contrast-result-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.contrast-compliance-badges {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* Desglose de Prompt Imagen 3 */
.prompt-anatomy-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.anatomy-block {
  background: var(--bg-subtle);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
}

.anatomy-block p {
  margin: 0;
  color: var(--text-main);
  line-height: 1.45;
}

.anatomy-block.anatomy-negative {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.anatomy-tag {
  display: block;
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.tag-neg {
  color: #dc2626;
}

/* Inspector de Código y Mermaid */
.code-modal-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.code-modal-pre {
  background: #0f172a;
  color: #f8fafc;
  padding: 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  overflow-x: auto;
  max-height: 400px;
  margin: 0;
  border: 1px solid #1e293b;
}

/* ==========================================================================
   Paleta de Comandos Global (Ctrl + K) & Medidor R-C-I-R-F
   ========================================================================== */

/* Botón disparador en topbar */
.btn-command-palette-trigger {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.82rem;
  transition: var(--transition);
}

.btn-command-palette-trigger:hover {
  background: var(--bg-surface);
  border-color: var(--color-primary-light);
  color: var(--text-main);
}

.cmd-shortcut {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-muted);
}

/* Modal de la Paleta de Comandos */
.command-palette-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(6px);
  z-index: 3500;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1.25rem 1.25rem 1.25rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.command-palette-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.command-palette-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 620px;
  overflow: hidden;
  transform: translateY(-10px);
  transition: transform 0.2s ease;
}

.command-palette-backdrop.is-open .command-palette-dialog {
  transform: translateY(0);
}

.command-palette-search {
  display: flex;
  align-items: center;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  gap: 0.75rem;
}

.command-palette-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 1rem;
  color: var(--text-main);
  font-family: inherit;
}

.btn-close-cmd {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.esc-badge {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 0.15rem 0.45rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.command-palette-results {
  max-height: 380px;
  overflow-y: auto;
  padding: 0.5rem;
}

.command-group-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  padding: 0.5rem 0.75rem 0.25rem;
}

.command-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease;
  font-size: 0.86rem;
  color: var(--text-main);
}

.command-item:hover,
.command-item.active {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.command-item-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.command-icon {
  font-size: 1.1rem;
}

.command-item-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-weight: 600;
}

.command-palette-footer {
  padding: 0.6rem 1.25rem;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: 1.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.command-palette-footer kbd {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 3px;
  padding: 0.05rem 0.35rem;
  font-family: var(--font-mono);
}

/* Medidor Heurístico de Calidad R-C-I-R-F */
.prompt-health-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}

.health-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.health-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.health-score {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
}

.health-progress-bar {
  height: 6px;
  background: var(--border-light);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.health-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.health-indicators-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.pill-req {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  transition: var(--transition);
}

.pill-req.active {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.health-tip {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.4;
}

/* ==========================================================================
   Simulador de Controles Nativos de Canvas, Multimodal y Gem Studio
   ========================================================================== */

/* Barra de Calibración Reactiva de Canvas */
.canvas-calibration-bar {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.calibration-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.calibration-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.canvas-slider-wrapper {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.canvas-range-slider {
  accent-color: var(--color-primary);
  width: 130px;
  cursor: pointer;
}

.slider-step-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: 0.2rem 0.55rem;
  border-radius: 12px;
  min-width: 90px;
  text-align: center;
}

.calibration-pill-group {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.calibration-pill {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 0.25rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.calibration-pill:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.calibration-pill.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

/* Margin Notes (Comentarios al margen en Canvas) */
.canvas-margin-container {
  position: relative;
  display: flex;
  gap: 1rem;
}

.canvas-doc-main-text {
  flex: 1;
}

.canvas-margin-notes {
  width: 240px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.margin-note-card {
  background: #fffbeb;
  border-left: 3px solid #f59e0b;
  border-radius: 6px;
  padding: 0.65rem 0.8rem;
  font-size: 0.78rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease;
}

.margin-note-card:hover {
  transform: translateX(-2px);
}

.margin-note-header {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  color: #92400e;
  margin-bottom: 0.25rem;
}

.margin-note-body {
  color: #78350f;
  line-height: 1.4;
  margin: 0;
}

/* Simulador Multimodal (Sketch to Canvas) */
.multimodal-sim-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
}

.multimodal-case-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.75rem;
}

.multimodal-case-btn {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.9rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
}

.multimodal-case-btn:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.multimodal-case-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.multimodal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .multimodal-grid {
    grid-template-columns: 1fr;
  }
}

.sketch-source-pane {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sketch-preview-box {
  background: #fefce8;
  border: 2px dashed #ca8a04;
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
}

.sketch-preview-box img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.ocr-detection-list {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--text-main);
}

.ocr-detection-list ul {
  margin: 0.35rem 0 0 1rem;
  padding: 0;
}

.multimodal-live-pane {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

/* Gem Studio (Constructor y Calibrador de Gems) */
.gem-studio-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
}

.gem-presets-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.gem-preset-btn {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 0.4rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.gem-preset-btn:hover {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.gem-preset-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.gem-studio-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .gem-studio-grid {
    grid-template-columns: 1fr;
  }
}

.gem-config-panel {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.gem-config-panel label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-main);
  display: block;
  margin-bottom: 0.25rem;
}

.gem-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.85rem;
  font-family: inherit;
}

.gem-textarea {
  width: 100%;
  min-height: 120px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  line-height: 1.45;
  resize: vertical;
}

.gem-console-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  height: 480px;
  overflow: hidden;
}

.gem-console-header {
  padding: 0.75rem 1rem;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gem-chat-scroll {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.gem-msg {
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  font-size: 0.84rem;
  line-height: 1.5;
  max-width: 88%;
}

.gem-msg.user {
  background: var(--color-primary);
  color: #ffffff;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.gem-msg.assistant {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}

.gem-console-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border-light);
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.gem-input-row {
  display: flex;
  gap: 0.5rem;
}

.gem-quick-prompts {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.gem-quick-chip {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
}

.gem-quick-chip:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

/* Ejercicios prácticos de Gemini Canvas (2 por modo) */
.canvas-exercises-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.canvas-exercises-header > div:first-child {
  flex: 1 1 28rem;
  min-inline-size: 0;
}

.canvas-exercises-intro {
  margin: 0.3rem 0 0 0;
  color: var(--text-muted);
  font-size: 0.93rem;
}

.canvas-exercises-switch {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 999px;
}

.canvas-exercises-switch-btn {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
}

.canvas-exercises-switch-btn.active {
  background: var(--color-primary);
  color: var(--text-inverse);
}

.canvas-exercises-switch-btn:focus-visible,
.canvas-exercise-copy:focus-visible,
.canvas-exercise-reset:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.canvas-exercises-notice {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 1rem 0;
}

.canvas-exercise-card {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.canvas-exercise-card.is-complete {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-subtle), var(--shadow-md);
}

.canvas-exercise-head {
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg, var(--color-primary-subtle), var(--bg-subtle));
  border-bottom: 1px solid var(--border-light);
}

.canvas-exercise-head h4 {
  margin: 0.35rem 0 0.5rem 0;
  font-size: 1.15rem;
  color: var(--text-main);
}

.canvas-exercise-tag {
  display: inline-block;
  background: var(--color-primary);
  color: var(--text-inverse);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.canvas-exercise-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.canvas-exercise-meta span {
  font-size: 0.8rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  color: var(--text-main);
}

.canvas-exercise-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.25rem;
}

.canvas-exercise-main,
.canvas-exercise-side {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-inline-size: 0;
}

.canvas-exercise-section h5,
.canvas-exercise-checklist h5,
.canvas-exercise-stretch h5 {
  margin: 0 0 0.35rem 0;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.canvas-exercise-section p {
  margin: 0 0 0.75rem 0;
  font-size: 0.92rem;
}

.canvas-exercise-block-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.canvas-exercise-block-head h5 {
  margin: 0;
}

.canvas-exercise-copy,
.canvas-exercise-reset {
  border: 1px solid var(--border-light);
  background: var(--bg-surface);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.canvas-exercise-copy:hover,
.canvas-exercise-reset:hover {
  background: var(--color-primary-subtle);
}

.canvas-exercise-copy.is-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--text-inverse);
}

.canvas-exercise-code {
  margin: 0;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  white-space: pre;
  overflow-x: auto;
  color: var(--text-main);
}

/* text-layout-exception: los datos del prompt conservan saltos y sangría, pero ajustan líneas largas para leerse completos sin desplazamiento horizontal */
.canvas-prompt-body .canvas-exercise-code {
  white-space: pre-wrap;
  overflow-wrap: anywhere; /* text-layout-exception: filas CSV sin espacios; el botón «Copiar prompt completo» entrega el texto íntegro */
}

.canvas-exercise-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Prompt por partes R-C-I-R-F: un solo bloque, etiqueta a la izquierda */
.canvas-exercise-prompt {
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
}

.canvas-prompt-part {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--border-light);
}

.canvas-prompt-part:first-child {
  border-top: 0;
}

.canvas-prompt-label {
  align-self: start;
  justify-self: start;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}

.canvas-prompt-body {
  min-inline-size: 0;
  font-size: 0.9rem;
}

.canvas-prompt-body p {
  margin: 0;
}

.canvas-prompt-body ol,
.canvas-prompt-body ul {
  margin: 0.35rem 0 0 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.canvas-exercise-followup {
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border-radius: 4px;
  padding: 0 0.2rem;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.canvas-exercise-steps {
  margin: 0;
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.canvas-exercise-step {
  font-size: 0.9rem;
  padding-left: 0.2rem;
}

.canvas-exercise-step::marker {
  color: var(--color-primary);
  font-weight: 700;
}

.canvas-exercise-preview {
  margin: 0;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.6rem;
  background: var(--bg-surface);
}

.canvas-exercise-preview svg {
  display: block;
  inline-size: 100%;
  block-size: auto;
}

.canvas-exercise-preview figcaption {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.canvas-exercise-checklist,
.canvas-exercise-stretch {
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
}

.canvas-exercise-stretch {
  border-left: 3px solid var(--color-accent);
}

.canvas-exercise-stretch p {
  margin: 0;
  font-size: 0.88rem;
}

.canvas-exercise-progress {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
}

.canvas-exercise-bar {
  block-size: 6px;
  background: var(--border-light);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.6rem;
}

.canvas-exercise-bar span {
  display: block;
  block-size: 100%;
  inline-size: 0;
  background: var(--color-primary);
  transition: width 0.25s ease;
}

.canvas-exercise-checklist ul {
  list-style: none;
  margin: 0 0 0.75rem 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.canvas-exercise-checklist label {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-size: 0.86rem;
  cursor: pointer;
}

.canvas-exercise-check {
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
  inline-size: 1rem;
  block-size: 1rem;
  flex-shrink: 0;
}

.canvas-exercise-check:checked + span {
  color: var(--text-muted);
  text-decoration: line-through;
}

/* Lista de verificación del simulador: criterio y forma de comprobarlo */
.sim-checklist {
  margin-block-end: 1rem;
}

.sim-checklist label > span {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-inline-size: 0;
}

.sim-check-how {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.sim-followup {
  margin-block-start: 0.75rem;
}

/* Clases de color de las vistas previas SVG */
.canvas-exercise-preview .cx-bg { fill: var(--bg-subtle); }
.canvas-exercise-preview .cx-p { fill: var(--color-primary); }
.canvas-exercise-preview .cx-a { fill: var(--color-accent); }
.canvas-exercise-preview .cx-w { fill: #d97706; }
.canvas-exercise-preview .cx-d { fill: #dc2626; }
.canvas-exercise-preview .cx-m { fill: var(--text-muted); }
.canvas-exercise-preview .cx-t { fill: var(--text-main); }
.canvas-exercise-preview .cx-on { fill: #ffffff; }
.canvas-exercise-preview .cx-p-t { fill: var(--color-primary); }
.canvas-exercise-preview .cx-ln { stroke: var(--border-light); stroke-width: 1; }
.canvas-exercise-preview .cx-ln-f { fill: var(--border-light); }
.canvas-exercise-preview .cx-on-f { fill: rgba(255, 255, 255, 0.85); }
.canvas-exercise-preview .cx-lane { fill: var(--bg-surface); stroke: var(--border-light); }
.canvas-exercise-preview .cx-code { fill: #1e293b; }
.canvas-exercise-preview .cx-cell { stroke: var(--bg-subtle); stroke-width: 1; }
.canvas-exercise-preview .cx-sel { opacity: 0.85; }
.canvas-exercise-preview .cx-area { fill-opacity: 0.22; }
.canvas-exercise-preview .cx-p-s { stroke: var(--color-primary); }
.canvas-exercise-preview .cx-a-s { stroke: var(--color-accent); }
.canvas-exercise-preview .cx-w-s { stroke: #d97706; }
.canvas-exercise-preview .cx-d-s { stroke: #dc2626; }
.canvas-exercise-preview .cx-m-s { stroke: var(--text-muted); }

/* La rejilla se apila según el ancho real de la tarjeta, no de la pantalla */
.canvas-exercise-card {
  container-type: inline-size;
}

@container (max-width: 56rem) {
  .canvas-exercise-grid {
    grid-template-columns: minmax(0, 1fr);
    padding: 0.9rem;
  }

  .canvas-exercise-head {
    padding: 0.9rem;
  }
}

@container (max-width: 34rem) {
  .canvas-prompt-part {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.4rem;
  }
}

/* ==========================================================================
   Módulo Interactivo del Día 3: Arquitectura, Ejemplos en Vivo y Laboratorio
   ========================================================================== */

.dia3-arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: 1.25rem;
}

.dia3-arch-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
  min-inline-size: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.dia3-arch-card h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--color-primary);
}

.dia3-arch-card svg {
  display: block;
  inline-size: 100%;
  block-size: auto;
}

.dia3-example-card {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-inline-size: 0;
}

.dia3-example-header {
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg, var(--color-primary-subtle), var(--bg-subtle));
  border-bottom: 1px solid var(--border-light);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
}

.dia3-example-body {
  padding: 1.25rem;
  min-inline-size: 0;
}

.dia3-live-widget {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
  min-inline-size: 0;
}

.dia3-widget-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.dia3-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.dia3-profile-btn {
  border: 1px solid var(--border-light);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
}

.dia3-profile-btn:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.dia3-profile-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--text-inverse);
}

.dia3-mini-kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.75rem;
}

.dia3-mini-kpi {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-inline-size: 0;
}

.dia3-mini-kpi span {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.dia3-mini-kpi strong {
  font-size: 0.95rem;
  color: var(--text-main);
}

.dia3-code-snippet {
  margin: 0;
  background: #1e293b;
  color: #f8fafc;
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  white-space: pre;
  overflow-x: auto;
}

.dia3-lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr));
  gap: 1.5rem;
}

.dia3-audit-box {
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  padding: 1rem 1.15rem;
  min-inline-size: 0;
}

.dia3-audit-box.audit-danger {
  border-left-color: #dc2626;
}

.dia3-audit-box.audit-success {
  border-left-color: #16a34a;
}

.dia3-findings-list {
  margin: 0.65rem 0 0 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.86rem;
}

.dia3-budget-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.75rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
}

/* devbrain-prose-contract:start */
/* Contrato 7.4: cada región ocupa su espacio y conserva sus controles. */
:where(p, dd, blockquote) {
    --text-align-reading: start;
    box-sizing: border-box;
    inline-size: 100%;
    max-inline-size: 100%;
    min-inline-size: 0;
    text-align: var(--text-align-reading);
    text-align-last: start;
    white-space: normal;
    word-break: normal;
    overflow-wrap: break-word;
    hyphens: none;
    -webkit-hyphens: none;
}
:where(dd, blockquote) { margin-inline: 0; }
/* devbrain-prose-contract:end */