/* ============================================================
   CAPA 8 — Design System "Obsidiana"
   Paleta oscura · Rojo Ibero · Glassmorphism sutil
   ============================================================ */

/* ── Variables ───────────────────────────────────────────── */
:root {
  /* Obsidiana — Backgrounds */
  --bg-primary:      #1c1c1c;
  --bg-surface:      rgba(255,255,255,0.04);
  --bg-glass:        rgba(255,255,255,0.05);
  --bg-glass-hover:  rgba(255,255,255,0.09);
  --bg-glass-border: rgba(255,255,255,0.10);

  /* Obsidiana — Text */
  --text-primary:    #eeeeee;
  --text-secondary:  #b0b0b0;
  --text-soft:       #b8b8b8;
  --text-muted:      #878787;

  /* Obsidiana — Accent (Ibero red, uso quirúrgico) */
  --accent:          #c8102e;
  --accent-light:    #e8334a;
  --accent-glow:     rgba(200,16,46,0.15);
  --accent-soft:     rgba(200,16,46,0.07);

  /* Obsidiana — Semantic */
  --success:         #2dd4a0;
  --success-glow:    rgba(45,212,160,0.12);
  --error:           #ef4444;
  --warning:         #f59e0b;

  /* Obsidiana — Glass */
  --glass-blur:      24px;
  --glass-bg:        rgba(255,255,255,0.045);
  --glass-border:    1px solid rgba(255,255,255,0.07);
  --glass-shadow:    0 4px 40px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.04);

  /* Obsidiana — Typography */
  --font-body:       'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:       'DM Mono', 'SF Mono', 'Fira Code', monospace;

  /* Obsidiana — Spacing & Radius */
  --radius-xl:   24px;
  --radius-lg:   16px;
  --radius-md:   12px;
  --radius-sm:   8px;
  --radius-pill: 999px;
  --nav-height:  52px;

  /* Legacy aliases (mantienen compatibilidad con código existente) */
  --bg-dark:        #1c1c1c;
  --primary:        #c8102e;
  --primary-light:  #e8334a;
  --primary-glow:   rgba(200,16,46,0.15);
  --text:           #eeeeee;
  --white:          #ffffff;
  --surface:        rgba(255,255,255,0.06);
  --surface-hover:  rgba(255,255,255,0.09);
  --surface-active: #c8102e;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
  font-family: var(--font-body);
}

/* Font Awesome usa pseudo-elementos ::before cuyo font-family
   debe heredarse del elemento padre (que FA configura como
   "Font Awesome 6 Free"). El reset anterior lo sobreescribe,
   así que lo revertimos sólo para pseudo-elementos de FA. */
.fa-solid::before, .fa-regular::before, .fa-brands::before,
.fas::before,      .far::before,        .fab::before {
  font-family: inherit;
}

/* ── Body / fondo ────────────────────────────────────────── */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  padding-top: 48px; /* compensate for fixed navbar */
}

/* Chat page: constrain to viewport so input stays anchored at the bottom.
   Priority order: svh > dvh > fill-available > vh */
body:has(.chat-page) {
  height: 100vh;
  height: -webkit-fill-available;
  overflow: hidden;
}
@supports (height: 100dvh) {
  body:has(.chat-page) { height: 100dvh; }
}
@supports (height: 100svh) {
  body:has(.chat-page) { height: 100svh; }
}

/* ── Keyframes ───────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes popIn {
  0%   { transform: scale(0.92); opacity: 0; }
  60%  { transform: scale(1.03); }
  100% { transform: scale(1);    opacity: 1; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 8px rgba(200,16,46,0.2); }
  50%       { box-shadow: 0 0 16px rgba(200,16,46,0.4); }
}

@keyframes dotBounce {
  0%, 60%, 100% { transform: translateY(0);   opacity: 0.3; }
  30%            { transform: translateY(-6px); opacity: 1; }
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0); }
  33%      { transform: translate(-30px, 40px); }
  66%      { transform: translate(20px, -20px); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0); }
  33%      { transform: translate(40px, -30px); }
  66%      { transform: translate(-20px, 30px); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(-50%, -50%); }
  50%      { transform: translate(calc(-50% - 40px), calc(-50% - 30px)); }
}

/* ── Obsidiana Nav — compartida en todas las páginas ─────── */
.obsidiana-nav,
.navbar {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 12px;
  background: linear-gradient(90deg, #c8102e 0%, #9a0c20 22%, #4a0812 48%, #1c1c1c 85%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  flex-shrink: 0;
}

/* Logo button (glass) */
.onav-logo-btn {
  display: flex; align-items: center; gap: 7px;
  background: rgba(255,255,255,0.10);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 5px 9px;
  cursor: pointer;
  color: #fff;
  transition: var(--transition);
  flex-shrink: 0;
}
.onav-logo-btn:hover { background: rgba(255,255,255,0.16); }
.onav-logo-wrap { position: relative; }

.onav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  flex-shrink: 0;
}

.onav-logo-img {
  height: 30px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}
.onav-chevron {
  width: 12px; height: 12px;
  color: rgba(255,255,255,0.7);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.onav-logo-btn.open .onav-chevron { transform: rotate(180deg); }

/* Logo dropdown */
.onav-dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-width: 220px;
  background: rgba(28,28,28,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 10px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.6);
  padding: 4px;
  animation: slideDown 0.2s ease-out both;
  z-index: 200;
}
.onav-dropdown[hidden] { display: none; }

/* Invisible bridge so the mouse doesn't leave onav-logo-wrap in the gap */
.onav-dropdown::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.onav-dropdown-item {
  display: flex; flex-direction: column;
  padding: 8px 12px;
  border-radius: 7px;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition);
}
.onav-dropdown-item:hover { background: rgba(255,255,255,0.06); }
.onav-dropdown-item.active { background: rgba(200,16,46,0.08); }
.onav-dropdown-item-title {
  font-size: 12px; font-weight: 600; color: rgba(255,255,255,0.9);
}
.onav-dropdown-item-sub {
  font-size: 10.5px; color: rgba(255,255,255,0.4); margin-top: 1px;
}

/* Divider vertical */
.onav-divider {
  width: 1px;
  height: 20px;
  background: rgba(255,255,255,0.12);
  margin: 0 4px;
  flex-shrink: 0;
}

/* Tools section */
.onav-tools {
  display: flex;
  align-items: center;
  gap: 4px;
}
.onav-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: rgba(255,255,255,0.4);
  margin-right: 2px;
  white-space: nowrap;
}

/* Glass chip */
.onav-chip {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 7px;
  padding: 4px 12px;
  font-size: 11.5px;
  font-family: var(--font-body);
  color: rgba(255,255,255,0.70);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 28px;
  white-space: nowrap;
}
.onav-chip:hover { background: rgba(255,255,255,0.14); color: #fff; }
.onav-chip.active {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.32);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

/* Chip tooltips */
.onav-chip[data-tooltip] {
  position: relative;
}
.onav-chip[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(18,18,26,0.97);
  color: #e2e8f0;
  font-size: 0.72rem;
  font-weight: 400;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  z-index: 9000;
  transition: opacity 0.2s ease;
  transition-delay: 0s;
}
.onav-chip[data-tooltip]:hover::after {
  opacity: 1;
  transition-delay: 0.6s;
}

/* Run/Stop chip */
.onav-chip--run {
  background: rgba(45,212,160,0.20);
  border-color: rgba(45,212,160,0.30);
  color: #2dd4a0;
}
.onav-chip--run:hover { background: rgba(45,212,160,0.28); color: #2dd4a0; }
.onav-chip--run.running {
  background: rgba(239,68,68,0.20);
  border-color: rgba(239,68,68,0.30);
  color: #f87171;
}

/* Icon-only button in navbar */
.onav-icon-btn {
  width: 28px; height: 28px;
  border-radius: 7px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.65);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  transition: all var(--transition);
  flex-shrink: 0;
}
.onav-icon-btn:hover { background: rgba(255,255,255,0.14); color: #fff; }
.onav-icon-btn.active { background: rgba(255,255,255,0.20); color: #fff; }

/* Spacer + Online pill */
.onav-spacer { flex: 1; }

.onav-online {
  display: flex; align-items: center; gap: 5px;
  background: rgba(45,212,160,0.12);
  border: 1px solid rgba(45,212,160,0.20);
  border-radius: 14px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #2dd4a0;
  flex-shrink: 0;
}
.onav-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #2dd4a0;
  flex-shrink: 0;
}

/* Autosave indicator */
.autosave-indicator {
  display: flex; align-items: center; gap: 5px;
  background: rgba(45,212,160,0.10);
  border: 1px solid rgba(45,212,160,0.18);
  border-radius: 14px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: #2dd4a0;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.autosave-indicator.visible { opacity: 1; }
.autosave-indicator i { font-size: 9px; }

/* ── Modo presentación ─────────────────────────────────────────────────── */
body.presentation-mode .obsidiana-nav,
body.presentation-mode .onav-mobile-menu,
body.presentation-mode .sim-menubar,
body.presentation-mode #inspector-overlay,
body.presentation-mode #terminal-bottom,
body.presentation-mode .ai-side-wrap,
body.presentation-mode .status-badge,
body.presentation-mode #node-ctx-menu,
body.presentation-mode #cursor-ghost { display: none !important; }

body.presentation-mode .sim-stage-wrap { top: 0 !important; }

.presentation-exit-hint {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(9,10,31,0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 14px;
  border-radius: 20px;
  pointer-events: none;
  z-index: 9999;
  opacity: 1;
  transition: opacity 2s ease 3s;  /* fade after 3s */
}
body:not(.presentation-mode) .presentation-exit-hint { display: none; }

/* Mobile hamburger (hidden on desktop) */
.onav-hamburger { display: none; }

/* ── Chat page full-height layout ────────────────────────── */
.chat-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
.chat-page-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}
.chat-page-messages::-webkit-scrollbar { width: 4px; }
.chat-page-messages::-webkit-scrollbar-track { background: transparent; }
.chat-page-messages::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.chat-page-messages-inner {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
/* reuse .ai-message / .user-message bubble styles — just remove old card wrapper */
.chat-page .ai-message,
.chat-page .message.ai-message {
  background: rgba(255,255,255,0.04);
  color: var(--text-soft);
  padding: 0.85rem 1.1rem;
  border-radius: 4px 14px 14px 14px;
  max-width: 80%;
  align-self: flex-start;
  font-size: 0.95rem;
  line-height: 1.6;
  border: var(--glass-border);
  animation: fadeSlideUp 0.25s ease both;
}
.chat-page .user-message,
.chat-page .message.user-message {
  background: var(--accent-soft);
  color: var(--text-primary);
  padding: 0.85rem 1.1rem;
  border-radius: 14px 4px 14px 14px;
  max-width: 80%;
  align-self: flex-end;
  font-size: 0.95rem;
  line-height: 1.6;
  border: 1px solid rgba(200,16,46,0.15);
  animation: fadeSlideUp 0.25s ease both;
}

/* Anchored input bar */
.chat-page-input {
  flex-shrink: 0;
  border-top: 1px solid rgba(255,255,255,0.10);
  background: rgba(28,28,28,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 20px calc(14px + env(safe-area-inset-bottom));
}
.chat-page-input-inner {
  max-width: 700px;
  margin: 0 auto;
}
.chat-page-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
}

/* Mobile hamburger dropdown */
.onav-mobile-menu {
  position: fixed;
  top: 48px; left: 0; right: 0;
  background: rgba(28,28,28,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 8px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 999;
}
.onav-mobile-menu[hidden] { display: none; }
.onav-mobile-label {
  font-family: var(--font-mono);
  font-size: 9px; text-transform: uppercase;
  letter-spacing: 1.2px; color: rgba(255,255,255,0.35);
  margin-top: 4px;
}
.onav-mobile-chips {
  display: flex; flex-wrap: wrap; gap: 4px;
}

/* ── Container ───────────────────────────────────────────── */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 100%;
}

/* ── Sección de controles ────────────────────────────────── */
.controls-section {
  animation: fadeSlideUp 0.4s ease both;
}

.section-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
}

.button-group {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* ── Pill buttons (chip inactivo) ────────────────────────── */
.pill-btn {
  background: var(--bg-glass);
  color: var(--text-muted);
  border: var(--glass-border);
  border-radius: var(--radius-pill);
  padding: 0.65rem 1.25rem;
  font-size: 0.88rem;
  font-weight: 400;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: all var(--transition);
  text-decoration: none;
  outline: none;
}

.pill-btn i { font-size: 0.95rem; }

.pill-btn:hover {
  background: var(--bg-glass-hover);
  border-color: rgba(255,255,255,0.12);
  color: var(--text-primary);
}

.pill-btn:active { transform: scale(0.97); }

/* Chip activo */
.pill-btn.active {
  background: var(--accent-soft);
  border: 1px solid rgba(200,16,46,0.25);
  color: var(--accent-light);
  font-weight: 600;
}

.pill-btn.active:hover {
  background: rgba(200,16,46,0.12);
}

a.pill-btn { text-decoration: none; }

/* ── Chat page (index.html) ──────────────────────────────── */
.chat-container {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  height: 520px;
  overflow: hidden;
  position: relative;
  animation: fadeSlideUp 0.5s 0.1s ease both;
}

/* Orbs de luz difusa dentro del chat card */
.chat-orb-top {
  position: absolute;
  top: -60px; right: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(200,16,46,0.15);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}
.chat-orb-bottom {
  position: absolute;
  bottom: -40px; left: -30px;
  width: 150px; height: 150px;
  border-radius: 50%;
  background: rgba(200,16,46,0.08);
  filter: blur(50px);
  pointer-events: none;
  z-index: 0;
}

.chat-header {
  position: relative; z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0 1.25rem;
  height: 48px;
  border-bottom: var(--glass-border);
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.88rem;
  background: rgba(255,255,255,0.02);
  flex-shrink: 0;
}

.chat-header i { color: var(--accent-light); }

.chat-messages {
  position: relative; z-index: 1;
  flex-grow: 1;
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  scroll-behavior: smooth;
}

/* ── Typing indicator ─────────────────────────────────────── */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  animation: fadeSlideUp 0.2s ease both;
}

.typing-avatar {
  width: 28px; height: 28px;
  border-radius: 8px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 2px 12px rgba(200,16,46,0.3);
}

.typing-bubble {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: var(--glass-border);
  border-radius: 4px 14px 14px 14px;
  padding: 12px 16px;
  display: flex;
  gap: 5px;
  align-items: center;
}

.typing-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: dotBounce 1.4s ease-in-out infinite;
}

/* Scrollbar oscura */
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.ai-message,
.message.ai-message {
  background: rgba(255,255,255,0.04);
  color: var(--text-soft);
  padding: 0.85rem 1.1rem;
  border-radius: 4px 14px 14px 14px;
  max-width: 80%;
  align-self: flex-start;
  font-size: 0.95rem;
  line-height: 1.6;
  border: var(--glass-border);
  animation: fadeSlideUp 0.25s ease both;
}

.user-message,
.message.user-message {
  background: var(--accent-soft);
  color: var(--text-primary);
  padding: 0.85rem 1.1rem;
  border-radius: 14px 4px 14px 14px;
  max-width: 80%;
  align-self: flex-end;
  font-size: 0.95rem;
  line-height: 1.6;
  border: 1px solid rgba(200,16,46,0.15);
  animation: fadeSlideUp 0.25s ease both;
}

.message { /* compatibilidad */ }

/* Input area (chat page) */
.chat-input-area {
  position: relative; z-index: 1;
  padding: 0.85rem;
  background: rgba(255,255,255,0.02);
  border-top: var(--glass-border);
  flex-shrink: 0;
}

.input-wrapper {
  background: rgba(255,255,255,0.04);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: flex-end;
  padding: 6px 6px 6px 2px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-wrapper:focus-within {
  border-color: rgba(200,16,46,0.3);
  box-shadow: 0 0 24px rgba(200,16,46,0.08);
}

.chat-input {
  flex-grow: 1;
  border: none;
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 0.9rem;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 40px;
  max-height: 96px;
  resize: none;
  overflow-y: auto;
  line-height: 1.5;
  display: block;
  width: 100%;
}

.chat-input::placeholder { color: var(--text-muted); opacity: 0.5; }

.send-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* Estado vacío (glass) */
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  box-shadow: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estado activo — hay texto en el input */
.send-btn.has-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  box-shadow: 0 2px 12px rgba(200,16,46,0.3);
}

.send-btn.has-text:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 20px rgba(200,16,46,0.4);
}

.send-btn.has-text:active { transform: scale(0.95); }

/* ── About page ──────────────────────────────────────────── */
.page-hero {
  display: flex; flex-direction: column;
  gap: 0.6rem; margin-bottom: 0.5rem;
  animation: fadeSlideUp 0.4s ease both;
}

.page-title {
  font-size: 2rem; font-weight: 700;
  color: var(--text-primary); letter-spacing: -0.03em;
}

.page-subtitle {
  font-size: 1rem; line-height: 1.65;
  color: var(--text-soft); max-width: 820px;
}

/* glass-card reutilizable */
.glass-card,
.content-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  position: relative;
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1.25rem;
  animation: fadeSlideUp 0.5s 0.1s ease both;
}

.content-block {
  background: rgba(255,255,255,0.03);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.content-block h2 { color: var(--text-primary); font-weight: 600; }
.content-block p { line-height: 1.7; margin-top: 0.6rem; color: var(--text-soft); }
.content-block strong { color: var(--text-primary); }
.content-block em { color: var(--text-soft); }

/* ── Responsivo (index + about) ──────────────────────────── */
@media (max-width: 768px) {
  /* Navbar mobile */
  .onav-logo-text { display: none; }
  .onav-online-text { display: none; }
  .onav-tools { display: none; }
  .onav-hamburger { display: flex; }

  /* Chat mobile — input fixed at bottom so it's never cut off by browser chrome */
  body:has(.chat-page) .chat-page-input {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 8px 12px calc(10px + env(safe-area-inset-bottom));
  }
  body:has(.chat-page) .chat-page-messages {
    padding: 12px 12px calc(80px + env(safe-area-inset-bottom));
  }
  .chat-page .ai-message,
  .chat-page .message.ai-message,
  .chat-page .user-message,
  .chat-page .message.user-message { max-width: 85%; }

  /* About */
  .page-title { font-size: 1.55rem; }
  .container { padding: 1rem; }

  /* Diagrams — navbar compacta para que quepan todos los iconos */
  .status-badge { font-size: 0.6rem; padding: 2px 6px; }
  .onav-menus { display: none; }
  #sim-menubar { display: none; }
  .autosave-indicator { display: none; }
  .onav-diag-actions { gap: 2px; }
  .onav-diag-actions .cnav-btn { font-size: 0.62rem; padding: 0 6px; height: 24px; gap: 3px; }
  .onav-diag-actions .cnav-icon-btn { width: 24px; height: 24px; font-size: 0.68rem; }
  .onav-icon-btn, .theme-toggle-btn { width: 32px; height: 32px; font-size: 0.8rem; }
}

/* ── Mobile sim menu (inside hamburger) ──────────────────── */
.onav-mobile-sim-menu {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.onav-mobile-sim-menu .menu { width: 100%; }

.onav-mobile-sim-menu .menu-btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 14px;
  font-size: 0.84rem;
  font-family: var(--font-body);
  height: 38px;
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.82);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.onav-mobile-sim-menu .menu-btn:hover { background: rgba(255,255,255,0.07); }
.onav-mobile-sim-menu .menu-btn.active { color: var(--accent-light); background: var(--accent-soft); }

.onav-mobile-sim-menu .menu-dropdown {
  display: none;
  position: static;
  background: rgba(255,255,255,0.03);
  border-left: 2px solid rgba(255,255,255,0.1);
  margin: 0 0 4px 14px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 4px;
  box-shadow: none;
  animation: none;
}

.onav-mobile-sim-menu .menu.open .menu-dropdown { display: block; }

.onav-mobile-sim-menu .menu-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.72);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.82rem;
  text-align: left;
  transition: var(--transition);
}

.onav-mobile-sim-menu .menu-item:hover { background: rgba(255,255,255,0.06); color: #fff; }
.onav-mobile-sim-menu .menu-sep { height: 1px; background: rgba(255,255,255,0.06); margin: 3px 0; }
.onav-mobile-sim-menu .menu-kbd { display: none; }

/* ── Topology open button (IA → Diagrams) ────────────────── */
.topology-open-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 3px 12px var(--accent-glow);
}

.topology-open-btn:hover { opacity: 0.85; transform: translateY(-1px); }


/* ============================================================
   SIMULATOR SHELL (diagrams.html)
   ============================================================ */

.sim-shell {
  max-width: 1400px;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* ── Menubar ─────────────────────────────────────────────── */
.sim-menubar {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  justify-content: flex-start;
  animation: fadeIn 0.4s ease both;
  position: relative;
  z-index: 50;
}

.sim-menubar .menu { position: relative; padding-bottom: 8px; }

.sim-menubar .menu-btn {
  border: none;
  background: transparent;
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  padding: 0.42rem 0.78rem;
  font-weight: 500;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.sim-menubar .menu-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.sim-menubar .menu-btn.active {
  background: var(--accent-soft);
  color: var(--accent-light);
  font-weight: 600;
}

/* Dropdown */
.sim-menubar .menu-dropdown {
  position: absolute;
  top: calc(100% - 4px); /* -4px compensates for .menu padding-bottom:8px → visual gap = 4px */
  left: 0;
  min-width: 250px;
  background: rgba(18,18,28,0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 48px rgba(0,0,0,0.5);
  padding: 0.35rem;
  display: none;
  z-index: 200;
  transform-origin: top left;
}

.sim-menubar .menu.open .menu-dropdown {
  display: block;
  animation: slideDown 0.2s ease-out both;
}


.sim-menubar .menu-item {
  width: 100%;
  border: 0;
  background: transparent;
  text-align: left;
  padding: 0.58rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: grid;
  grid-template-columns: 20px 1fr auto;
  gap: 0.6rem;
  align-items: center;
  color: var(--text-soft);
  font-weight: 500;
  font-size: 0.85rem;
  transition: background var(--transition), color var(--transition);
}

.sim-menubar .menu-item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.sim-menubar .menu-item i {
  width: 20px;
  text-align: center;
  opacity: 0.6;
}

.sim-menubar .menu-item:hover i { opacity: 1; }

.sim-menubar .menu-kbd {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.06);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  border: var(--glass-border);
}

.sim-menubar .menu-sep {
  height: 1px;
  background: rgba(255,255,255,0.06);
  margin: 0.3rem 0.35rem;
}

/* ── Body layout ─────────────────────────────────────────── */
.sim-body {
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 0.85rem;
  align-items: stretch;
}

/* ── Workspace ───────────────────────────────────────────── */
.sim-workspace {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: calc(100vh - 200px);
  animation: fadeUp 0.4s 0.05s var(--transition) both;
}

.sim-windowbar {
  padding: 0.85rem 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-bottom: var(--glass-border);
  background: rgba(255,255,255,0.02);
}

.sim-windowbar h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.sim-badge {
  background: var(--accent-soft);
  color: var(--accent-light);
  border: 1px solid rgba(200,16,46,0.2);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* Stage (canvas) */
.network-stage {
  position: relative;
  flex: 1;
  overflow: hidden;
  cursor: default;
  touch-action: none; /* allow custom pinch/pan/drag handlers */
  background-color: rgba(10, 10, 15, 0.85);
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 28px 28px;
}

.network-stage.is-panning { cursor: grabbing !important; }

/* World container — transform handles zoom+pan.
   No will-change: the browser rasterises text at the current scale rather than
   pre-creating a GPU layer at 1× and stretching it → sharper text when zoomed. */
.stage-world {
  position: absolute;
  top: 0; left: 0;
  transform-origin: 0 0;
}

.stage-svg {
  position: absolute;
  top: 0; left: 0;
  width: 4000px;
  height: 4000px;
  pointer-events: none;
  z-index: 1;
}

/* Status bar */
.sim-statusbar {
  padding: 0.55rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.02);
  border-top: var(--glass-border);
  letter-spacing: 0.01em;
}

/* ── Control panel (derecho) ─────────────────────────────── */
.control-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: calc(100vh - 200px);
  animation: fadeUp 0.4s 0.1s var(--transition) both;
}

.panel-section {
  background: var(--bg-surface);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.85rem;
}

.panel-section h3 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
}

/* Botones de acción pequeños — estilo glass */
.small-btn {
  border: var(--glass-border);
  background: var(--bg-glass);
  color: var(--text-soft);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.65rem;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all var(--transition);
  width: 100%;
}

.small-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.12);
  transform: translateY(-1px);
}

.small-btn:active { transform: translateY(0); }

.small-btn.is-running {
  background: var(--accent-soft);
  border-color: rgba(200,16,46,0.25);
  color: var(--accent-light);
}

.inline-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

/* ── Tabs ────────────────────────────────────────────────── */
.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.35rem;
  margin-bottom: 0.65rem;
  background: rgba(255,255,255,0.03);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: var(--glass-border);
}

.tab-btn {
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  padding: 0.42rem 0.4rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: all var(--transition);
}

.tab-btn.active {
  background: var(--accent-soft);
  color: var(--accent-light);
  font-weight: 600;
  border: 1px solid rgba(200,16,46,0.2);
}

/* ── Inspector / panel-content ───────────────────────────── */
#panel-content {
  background: var(--bg-surface);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  min-height: 170px;
}

.muted {
  color: var(--text-muted);
  font-size: 0.83rem;
  line-height: 1.5;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.55rem;
}

.mask-hint {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  min-height: 0.9rem;
  line-height: 1;
}

/* ── "Opciones avanzadas" button in inspector ── */
.adv-open-btn {
  width: 100%;
  padding: 0.36rem 0.6rem;
  margin-top: 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--bg-glass-border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.74rem;
  font-family: var(--font-mono);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.adv-open-btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  background: rgba(200,16,46,0.07);
}

/* ── Advanced Properties Modal ── */
.adv-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.adv-modal-backdrop.hidden { display: none; }

.adv-modal {
  background: var(--bg-primary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  width: min(540px, 94vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 28px 80px rgba(0,0,0,0.55), 0 4px 16px rgba(0,0,0,0.3);
  animation: modal-enter 0.18s ease-out;
}
@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to   { opacity: 1; transform: scale(1)    translateY(0);   }
}

.adv-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem 0.8rem;
  border-bottom: 1px solid var(--bg-glass-border);
  flex-shrink: 0;
}
.adv-modal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.adv-modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.3rem 0.4rem;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  line-height: 1;
}
.adv-modal-close:hover { color: var(--text-primary); background: rgba(255,255,255,0.07); }

.adv-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.25rem;
  scrollbar-width: thin;
}
.adv-modal-body .field { margin-bottom: 0.7rem; }
.adv-modal-body textarea {
  width: 100%;
  min-height: 68px;
  resize: vertical;
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  padding: 0.42rem 0.6rem;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
  outline: none;
  transition: border-color var(--transition);
  box-sizing: border-box;
}
.adv-modal-body textarea:focus { border-color: var(--accent); }

.adv-section-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.45rem;
}
.preset-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.9rem;
}
.preset-btn {
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bg-glass-border);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all var(--transition);
}
.preset-btn:hover  { border-color: rgba(200,16,46,0.5); color: var(--text-primary); background: rgba(200,16,46,0.08); }
.preset-btn.active { border-color: var(--accent); color: var(--text-primary); background: rgba(200,16,46,0.14); }

.adv-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 0.8rem;
}

.adv-label-hint {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.68rem;
}

.adv-modal-footer {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  padding: 0.75rem 1.25rem 1rem;
  border-top: 1px solid var(--bg-glass-border);
  flex-shrink: 0;
}
.adv-modal-btn {
  padding: 0.45rem 1.2rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.adv-modal-btn--cancel {
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
  border: 1px solid var(--bg-glass-border);
}
.adv-modal-btn--cancel:hover { background: rgba(255,255,255,0.11); color: var(--text-primary); }
.adv-modal-btn--apply  { background: var(--accent); color: #fff; }
.adv-modal-btn--apply:hover { background: #a50d25; }

/* ── Saber más — modal informativo ─────────────────────────────────────── */
.saber-mas-card {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.saber-mas-img-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 1.4rem 1rem;
  min-height: 320px;
}

.saber-mas-img {
  max-height: 320px;
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 6px 24px rgba(0,0,0,0.4));
  transition: transform 0.2s ease;
}

.saber-mas-img:hover { transform: scale(1.03); }

.saber-mas-sections {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.saber-mas-section {
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.85rem;
}

.saber-mas-section-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.45rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.saber-mas-text {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.saber-mas-text--mono {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.saber-mas-curious {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  background: rgba(200,16,46,0.07);
  border: 1px solid rgba(200,16,46,0.25);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.saber-mas-curious i {
  color: #f0b429;
  margin-top: 0.1rem;
  flex-shrink: 0;
}

.saber-mas-card--link .saber-mas-link-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
}

.saber-mas-link-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(200,16,46,0.12);
  border: 1px solid rgba(200,16,46,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent);
  flex-shrink: 0;
}

.saber-mas-link-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.saber-mas-stat {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--bg-glass-border);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.saber-mas-stat i { color: var(--accent); font-size: 0.65rem; }

[data-theme="light"] .saber-mas-img-wrap,
[data-theme="light"] .saber-mas-section {
  background: rgba(0,0,0,0.03);
  border-color: rgba(0,0,0,0.09);
}

[data-theme="light"] .saber-mas-text,
[data-theme="light"] .saber-mas-text--mono { color: #444; }

[data-theme="light"] .saber-mas-curious {
  background: rgba(200,16,46,0.05);
  border-color: rgba(200,16,46,0.2);
  color: #555;
}

[data-theme="light"] .saber-mas-card--link .saber-mas-link-header {
  background: rgba(0,0,0,0.03);
  border-color: rgba(0,0,0,0.09);
}

[data-theme="light"] .saber-mas-stat {
  background: rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.1);
  color: #666;
}

.field label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.field input,
.field select {
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  padding: 0.42rem 0.6rem;
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--text-primary);
  outline: none;
  background: rgba(255,255,255,0.03);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field input::placeholder { color: var(--text-muted); opacity: 0.5; }

.field select option { background: #1a1a28; color: var(--text-primary); }

.field input:focus,
.field select:focus {
  border-color: rgba(200,16,46,0.3);
  box-shadow: 0 0 24px rgba(200,16,46,0.08);
}

.field input:disabled { opacity: 0.4; cursor: not-allowed; }

.field small { color: var(--text-muted); font-size: 0.72rem; }

/* Real-time validation feedback */
.field input.field-invalid {
  border-color: #ef4444 !important;
  background: rgba(239,68,68,0.06);
}
.field input.field-warn {
  border-color: #f59e0b !important;
  background: rgba(245,158,11,0.06);
}
.field-error {
  display: block;
  font-size: 0.7rem;
  margin-top: 2px;
  min-height: 0.9rem;
  color: #ef4444;
  font-family: var(--font-mono);
}
.field-error:empty { display: none; }
[data-theme="light"] .field input.field-invalid { background: rgba(239,68,68,0.08); }
[data-theme="light"] .field input.field-warn    { background: rgba(245,158,11,0.08); }

/* Tips panel */
.control-panel code {
  background: rgba(200,16,46,0.08);
  border: var(--glass-border);
  padding: 0.1rem 0.35rem;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--accent-light);
}

/* ── Tool grid (vacío pero mantenemos clase) ─────────────── */
.tool-grid { display: grid; gap: 0.5rem; }

/* ── Terminal ────────────────────────────────────────────── */
.terminal {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.terminal-output {
  background: rgba(0,0,0,0.5);
  color: var(--text-soft);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
  height: 200px;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  border: var(--glass-border);
  white-space: pre-wrap;
}

.terminal-output::-webkit-scrollbar { width: 4px; }
.terminal-output::-webkit-scrollbar-track { background: transparent; }
.terminal-output::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.terminal-input-row {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.terminal-input {
  flex: 1;
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
  background: rgba(255,255,255,0.04);
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.terminal-input::placeholder { color: var(--text-muted); opacity: 0.5; }

.terminal-input:focus {
  border-color: rgba(200,16,46,0.3);
  box-shadow: 0 0 16px rgba(200,16,46,0.08);
}

.terminal-send {
  background: var(--accent-soft);
  color: var(--accent-light);
  border: 1px solid rgba(200,16,46,0.2);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.75rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all var(--transition);
}

.terminal-send:hover {
  background: rgba(200,16,46,0.15);
  color: var(--text-primary);
}

/* ── Nodos ── diseño cuadrado: label / icono / IP ────────── */
.node {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 86px;
  padding: 0.55rem 0.45rem 0.5rem;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--text-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  z-index: 2;
  cursor: grab;
  user-select: none;
  transition: transform var(--transition);
}

.node:hover {
  transform: translate(-50%, -51%);
}
.node:hover .node-icon {
  filter: drop-shadow(0 0 7px rgba(255,255,255,0.25));
}

.node.selected .node-icon {
  box-shadow: 0 0 0 2px rgba(200,16,46,0.7), 0 0 14px rgba(200,16,46,0.4);
}

/* Label: nombre del dispositivo — prominente arriba */
.node-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8), 0 0 8px rgba(0,0,0,0.6);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Disco crystal detrás del icono SVG */
.node-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  will-change: transform;
}
.node-icon svg { width: 40px; height: 40px; shape-rendering: geometricPrecision; }

.node.router .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(59,130,246,0.18), rgba(59,130,246,0.04));
  box-shadow: 0 0 0 1px rgba(59,130,246,0.12) inset;
}
.node.switch .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(6,182,212,0.18), rgba(6,182,212,0.04));
  box-shadow: 0 0 0 1px rgba(6,182,212,0.12) inset;
}
.node.pc .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(167,139,250,0.18), rgba(167,139,250,0.04));
  box-shadow: 0 0 0 1px rgba(167,139,250,0.12) inset;
}

/* IP: monoespacio pequeño abajo */
.node-meta {
  font-size: 0.6rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-align: center;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  text-shadow: 0 1px 3px rgba(0,0,0,0.7);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Indicadores de conectividad e internet */
.node-indicators {
  display: flex;
  gap: 5px;
  align-items: center;
  justify-content: center;
}
.node-ind {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background var(--transition), box-shadow var(--transition);
}
.node-ind--link.on  {
  background: #22c55e;
  box-shadow: 0 0 5px rgba(34,197,94,0.7);
}
.node-ind--link.off {
  background: rgba(255,255,255,0.18);
  box-shadow: none;
}
.node-ind--net.on  {
  background: #60a5fa;
  box-shadow: 0 0 5px rgba(96,165,250,0.7);
}
.node-ind--net.off {
  background: rgba(255,255,255,0.18);
  box-shadow: none;
}

/* ── Markdown dentro de burbujas de chat ─────────────────── */
.ai-message p, .chat-msg.assistant p   { margin: 0 0 0.5em; }
.ai-message p:last-child, .chat-msg.assistant p:last-child { margin-bottom: 0; }
.ai-message strong, .chat-msg.assistant strong { font-weight: 700; color: var(--text-primary); }
.ai-message em, .chat-msg.assistant em { font-style: italic; }
.ai-message h1,.ai-message h2,.ai-message h3,
.chat-msg.assistant h1,.chat-msg.assistant h2,.chat-msg.assistant h3 {
  font-weight: 700; margin: 0.6em 0 0.3em; color: var(--text-primary);
}
.ai-message h1, .chat-msg.assistant h1 { font-size: 1.1em; }
.ai-message h2, .chat-msg.assistant h2 { font-size: 1em; }
.ai-message h3, .chat-msg.assistant h3 { font-size: 0.95em; }
.ai-message ul,.ai-message ol,
.chat-msg.assistant ul,.chat-msg.assistant ol {
  padding-left: 1.4em; margin: 0.35em 0;
}
.ai-message li, .chat-msg.assistant li { margin-bottom: 0.2em; }
.ai-message code, .chat-msg.assistant code {
  background: rgba(200,16,46,0.08);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--accent-light);
}
.ai-message pre, .chat-msg.assistant pre {
  background: rgba(0,0,0,0.4);
  color: var(--text-soft);
  border-radius: 8px;
  padding: 0.75em 1em;
  overflow-x: auto;
  margin: 0.5em 0;
  font-size: 0.82em;
  border: var(--glass-border);
}
.ai-message pre code, .chat-msg.assistant pre code {
  background: none; padding: 0; font-size: 1em; color: inherit;
}
.ai-message blockquote, .chat-msg.assistant blockquote {
  border-left: 3px solid var(--accent-light);
  margin: 0.4em 0; padding-left: 0.75em;
  opacity: 0.8;
}

/* ── Toast ───────────────────────────────────────────────── */
.diagram-toast {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  background: rgba(18,18,28,0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  color: var(--text-primary);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  border: var(--glass-border);
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  z-index: 9999;
}

.diagram-toast.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ── Ajustes toggles ─────────────────────────────────────── */
.network-stage.no-grid   { background-image: none !important; }
.network-stage.white-bg  { background-color: #ffffff !important; }

/* ── Responsive (simulator) ──────────────────────────────── */
@media (max-width: 1100px) {
  .sim-body { grid-template-columns: 1fr; }
  .control-panel { min-height: auto; }
}

@media (max-width: 768px) {
  .sim-windowbar { flex-direction: column; align-items: flex-start; }
  .network-stage { min-height: 420px; }
}


/* ============================================================
   CHAT PANEL FLOTANTE (diagrams.html)
   ============================================================ */
.chat-panel {
  position: fixed;
  bottom: 0;
  right: 1.5rem;
  width: 340px;
  background: rgba(18,18,28,0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: var(--glass-border);
  border-bottom: none;
  border-radius: 18px 18px 0 0;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.4);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  height: 430px;
  transition: height 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  animation: fadeSlideUp 0.5s 0.2s ease both;
}

.chat-panel.collapsed {
  height: 46px;
}

/* Header del panel flotante (scoped) */
.chat-panel .chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.85rem;
  height: 46px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 16px 16px 0 0;
  cursor: pointer;
  flex-shrink: 0;
  border-bottom: none;
}

.chat-header-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  pointer-events: none;
  letter-spacing: 0.01em;
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chat-header-actions select {
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.15);
  color: #fff;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: background var(--transition);
}

.chat-header-actions select option {
  background: #1a1a28;
  color: var(--text-primary);
}

.chat-header-actions select:focus {
  background: rgba(255,255,255,0.25);
}

#chat-toggle-btn {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.25rem 0.45rem;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

#chat-toggle-btn:hover { background: rgba(255,255,255,0.25); }

/* Body del chat */
.chat-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.chat-panel.collapsed .chat-body { display: none; }

.chat-panel .chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  scroll-behavior: smooth;
}

.chat-msg {
  padding: 0.55rem 0.8rem;
  border-radius: 14px;
  font-size: 0.83rem;
  line-height: 1.55;
  max-width: 90%;
  white-space: pre-wrap;
  word-break: break-word;
  animation: fadeSlideUp 0.2s ease both;
}

.chat-msg.user {
  background: var(--accent-soft);
  color: var(--text-primary);
  align-self: flex-end;
  border-radius: 14px 4px 14px 14px;
  border: 1px solid rgba(200,16,46,0.15);
}

.chat-msg.assistant {
  background: rgba(255,255,255,0.04);
  color: var(--text-soft);
  align-self: flex-start;
  border-radius: 4px 14px 14px 14px;
  border: var(--glass-border);
}

/* Input row (scoped al panel flotante) */
.chat-panel .chat-input-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.65rem;
  border-top: var(--glass-border);
  background: rgba(255,255,255,0.02);
  flex-shrink: 0;
}

.chat-panel .chat-input {
  flex: 1;
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.65rem;
  font-size: 0.82rem;
  outline: none;
  background: rgba(255,255,255,0.04);
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.chat-panel .chat-input::placeholder { color: var(--text-muted); opacity: 0.5; }

.chat-panel .chat-input:focus {
  border-color: rgba(200,16,46,0.3);
  box-shadow: 0 0 16px rgba(200,16,46,0.08);
}

.chat-send-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  font-size: 0.82rem;
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.chat-send-btn:hover { opacity: 0.88; transform: scale(1.05); }
.chat-send-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }


/* ============================================================
   METRICS TABLE
   ============================================================ */
.metrics-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
  margin-top: 0.35rem;
}

.metrics-table th {
  text-align: left;
  padding: 4px 6px;
  color: var(--accent-light);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: var(--glass-border);
}

.metrics-table td {
  padding: 4px 6px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-soft);
}

.metrics-table tr:last-child td { border-bottom: none; }
.metrics-table tr:hover td { background: rgba(255,255,255,0.03); }


/* Menus strip — override sim-menubar glass styles for dark navbar */
.compact-navbar .sim-menubar,
.obsidiana-nav .sim-menubar {
  background: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
  backdrop-filter: none;
  animation: none;
}

/* Dropdowns del navbar: siempre oscuros — colores fijos, no dependen del tema */
.obsidiana-nav .sim-menubar .menu-item,
.obsidiana-nav .sim-menubar .menu-dropdown a {
  color: rgba(200,205,220,0.85);
}
.obsidiana-nav .sim-menubar .menu-item:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.obsidiana-nav .sim-menubar .menu-kbd {
  color: rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.10);
}
.obsidiana-nav .sim-menubar .menu-sep {
  background: rgba(255,255,255,0.07);
}

/* Compact menu buttons — also applies to onav-menus inside obsidiana-nav */
.cnav-menus .menu-btn,
.onav-menus .menu-btn {
  padding: 3px 9px;
  font-size: 0.78rem;
  height: 28px;
  color: rgba(255, 255, 255, 0.8);
}

.cnav-menus .menu-btn:hover,
.onav-menus .menu-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.cnav-menus .menu-btn.active,
.onav-menus .menu-btn.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* Dropdown in dark navbar — override the light style */
.cnav-menus .menu-dropdown,
.onav-menus .menu-dropdown {
  background: rgba(28, 28, 28, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.2);
}

.cnav-menus .menu-item,
.onav-menus .menu-item {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.cnav-menus .menu-item:hover,
.onav-menus .menu-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.cnav-menus .menu-kbd,
.onav-menus .menu-kbd {
  color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
}

.cnav-menus .menu-sep,
.onav-menus .menu-sep {
  background: rgba(255, 255, 255, 0.08);
}

/* Diagrams action buttons inside obsidiana-nav */
.onav-diag-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Action buttons */
.cnav-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.cnav-btn {
  height: 28px;
  padding: 0 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: 1.5px solid;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}

.cnav-btn-run {
  color: #2dd4a0;
  border-color: rgba(45,212,160,0.30);
  background: rgba(45,212,160,0.20);
}

.cnav-btn-run:hover { background: rgba(45,212,160,0.28); }

.cnav-btn-run.running {
  color: #f87171;
  border-color: rgba(239,68,68,0.30);
  background: rgba(239,68,68,0.20);
}

.cnav-btn-run.running:hover { background: rgba(239,68,68,0.28); }

.cnav-icon-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.65);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cnav-icon-btn:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.cnav-icon-btn.active { background: rgba(255, 255, 255, 0.18); color: #fff; }


/* ── Stage wrap fills remaining height ─────────────────── */
.sim-stage-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: padding-right 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.sim-stage-wrap > .network-stage {
  flex: 1;
  min-height: 0;
  width: 100%;
}


/* ── Inspector overlay ─────────────────────────────────── */
.inspector-overlay {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 260px;
  z-index: 50;
  background: rgba(18,18,28,0.92);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: 12px;
  animation: slideInRight 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.inspector-overlay[hidden] { display: none; }


/* ── Node context menu ─────────────────────────────────── */
.node-ctx-menu {
  position: absolute;
  z-index: 60;
  min-width: 160px;
  background: rgba(9, 10, 31, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.node-ctx-menu[hidden] { display: none; }

.ctx-item {
  padding: 7px 14px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ctx-item:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.ctx-item.danger:hover { background: rgba(248, 113, 113, 0.15); color: #f87171; }


/* ── Status badge ──────────────────────────────────────── */
.status-badge {
  position: absolute;
  left: 8px;
  bottom: 8px;
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.55);
  background: rgba(9, 10, 31, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  transition: bottom 0.2s ease-out;
  pointer-events: none;
  z-index: 30;
}

.status-badge .sim-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  margin-right: 4px;
  vertical-align: middle;
}


/* ── Bottom terminal panel ─────────────────────────────── */
.terminal-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 175px;
  z-index: 40;
  background: rgba(10,10,15,0.96);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-top: var(--glass-border);
  transform: translateY(0);
  transition: transform 0.2s ease-out;
  display: flex;
  flex-direction: column;
}

/* ── Terminal drag handle (mobile only) ── */
.term-drag-handle {
  display: none;
}
@media (max-width: 768px) {
  .term-drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    flex-shrink: 0;
    touch-action: none;
    cursor: ns-resize;
    color: rgba(255,255,255,0.28);
    font-size: 1rem;
    letter-spacing: 2px;
    border-radius: 20px 20px 0 0;
  }
  .term-drag-handle:active { color: rgba(255,255,255,0.55); }
  [data-theme="light"] .term-drag-handle { color: rgba(0,0,0,0.2); }
}

.terminal-bottom--hidden { transform: translateY(100%); }

.terminal-bottom-header {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  flex-shrink: 0;
}

.term-hdr-btn {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.72rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: var(--transition);
}

.term-hdr-btn:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }

/* Terminal output inside bottom panel: flex to fill space */
.terminal-bottom .terminal-output {
  flex: 1;
  height: auto;
  border-radius: 0;
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Input row inside bottom panel */
.terminal-bottom .terminal-input-row {
  flex-shrink: 0;
  padding: 4px 8px;
  background: rgba(9, 10, 31, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  align-items: center;
}

.terminal-prompt {
  color: #4ade80;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.82rem;
  padding-right: 2px;
  flex-shrink: 0;
}

/* Override terminal-input/send background for dark panel */
.terminal-bottom .terminal-input {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
  color: #e0e4ff;
}

.terminal-bottom .terminal-input::placeholder { color: rgba(255, 255, 255, 0.25); }

.terminal-bottom .terminal-input:focus {
  border-color: rgba(74, 222, 128, 0.5);
  box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.1);
}

/* Terminal color spans */
.t-cyan    { color: #22d3ee; }
.t-green   { color: #22c55e; }
.t-error   { color: #ef4444; }
.t-success { color: #4ade80; }
.t-muted   { color: #6b7280; }


/* ── AI Side Panel ──────────────────────────────────────── */
.ai-side-wrap {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 28px;
  pointer-events: none;
  z-index: 55;
}

/* Tab button — always visible on right edge, above the panel */
.ai-tab-btn {
  pointer-events: auto;
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 210;           /* must be above panel's z-index: 200 */
  width: 28px;
  height: 90px;
  border-radius: 10px 0 0 10px;
  border: var(--glass-border);
  border-right: none;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #fff;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  box-shadow: -3px 0 18px var(--accent-glow);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
              opacity var(--transition);
}

/* When panel is open: tab slides to the left edge of the panel.
   Shape stays identical — rounded-left / square-right always. */
.ai-fab-panel.open ~ .ai-tab-btn {
  transform: translateY(-50%) translateX(-320px);
}

.ai-tab-btn:hover { opacity: 0.9; }

.ai-tab-btn i { font-size: 0.85rem; }

.ai-tab-label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
}

.ai-tab-badge {
  position: absolute;
  top: 6px;
  left: 4px;
  background: var(--warning);
  color: #000;
  font-size: 0.58rem;
  font-weight: 700;
  min-width: 15px;
  height: 15px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  padding: 0 2px;
}

/* Override: when chat-panel lives inside the sidebar it must fill it */
.ai-fab-panel .chat-panel {
  position: relative;
  width: 100%;
  height: 100%;
  right: auto;
  bottom: auto;
  border-radius: 0;
  border: none;
  box-shadow: none;
  animation: none;
  flex: 1;
}

/* Sidebar panel — flush with the right edge; tab sits on top */
.ai-fab-panel {
  pointer-events: auto;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  border-radius: 0;
  border-left: 1px solid var(--bg-glass-border);
  border-top: none;
  border-right: none;
  border-bottom: none;
  background: rgba(20,20,25,0.97);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: -4px 0 32px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 200;
}

.ai-fab-panel.open {
  transform: translateX(0);
}

/* When sidebar is open, push the canvas left (320px panel) */
.sim-stage-wrap.has-ai-open {
  padding-right: 320px;
}

@media (max-width: 768px) {
  /* AI panel: bottom sheet at 50% viewport height, resizable by drag */
  .ai-fab-panel {
    position: fixed;
    width: 100%;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    height: 50dvh;
    max-height: 88dvh;
    border-radius: 20px 20px 0 0;
    border-left: none;
    border-top: 1px solid var(--bg-glass-border);
    transform: translateY(110%);
    z-index: 500;
  }
  .ai-fab-panel.open {
    transform: translateY(0);
  }
  /* Remove pseudo-element pill — replaced by .ai-drag-handle */
  .ai-fab-panel::before { display: none; }
  .sim-stage-wrap.has-ai-open {
    padding-right: 0;
  }
  /* Safe area for input row */
  .fab-input-row {
    padding-bottom: calc(0.65rem + env(safe-area-inset-bottom));
  }
  /* AI tab button: circular fixed FAB at bottom-right */
  .ai-tab-btn {
    position: fixed;
    top: auto;
    bottom: calc(24px + env(safe-area-inset-bottom));
    right: 16px;
    transform: none !important;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border-right: var(--glass-border);
    z-index: 501;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s;
  }
  .ai-tab-label { display: none; }
  /* Hide circular FAB while panel is open */
  .ai-fab-panel.open ~ .ai-tab-btn {
    transform: scale(0) !important;
    opacity: 0;
    pointer-events: none;
  }
}

/* ── AI panel drag handle (mobile only) ── */
.ai-drag-handle {
  display: none; /* hidden on desktop */
}
@media (max-width: 768px) {
  .ai-drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    flex-shrink: 0;
    touch-action: none;
    cursor: ns-resize;
    color: rgba(255,255,255,0.28);
    font-size: 1rem;
    letter-spacing: 2px;
    border-radius: 20px 20px 0 0;
  }
  .ai-drag-handle:active { color: rgba(255,255,255,0.55); }
  [data-theme="light"] .ai-drag-handle { color: rgba(0,0,0,0.2); }
}

/* ── FAB panel header ── */
.fab-panel-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px 0 12px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  flex-shrink: 0;
}

.fab-panel-title {
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.fab-panel-chips {
  display: flex;
  gap: 3px;
  flex: 1;
  justify-content: flex-end;
  margin-right: 4px;
}

.fab-mode-chip {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-weight: 600;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.fab-mode-chip.active {
  background: rgba(255,255,255,0.95);
  color: var(--accent);
  border-color: transparent;
}

.fab-mode-chip:hover:not(.active) {
  background: rgba(255,255,255,0.25);
  color: #fff;
}

.fab-panel-close {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 4px;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  flex-shrink: 0;
}

.fab-panel-close:hover { color: #fff; background: rgba(255,255,255,0.15); }

/* ── FAB messages ── */
.fab-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  scroll-behavior: smooth;
  background: rgba(10,10,15,0.5);
}

.fab-messages::-webkit-scrollbar { width: 4px; }
.fab-messages::-webkit-scrollbar-track { background: transparent; }
.fab-messages::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.fab-msg {
  padding: 0.45rem 0.75rem;
  border-radius: 12px;
  font-size: 0.82rem;
  line-height: 1.45;
  max-width: 92%;
}

.fab-msg.user {
  background: var(--accent-soft);
  color: var(--text-primary);
  border: 1px solid rgba(200,16,46,0.15);
  align-self: flex-end;
}

.fab-msg.assistant {
  background: rgba(255,255,255,0.04);
  color: var(--text-soft);
  border: 1px solid rgba(255,255,255,0.06);
  align-self: flex-start;
}

/* Typing indicator */
.fab-typing {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 0.55rem 0.85rem !important;
}

.fab-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: fabDotBounce 1.2s ease-in-out infinite;
}

.fab-dot:nth-child(2) { animation-delay: 0.2s; }
.fab-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes fabDotBounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-5px); opacity: 1; }
}

/* ── Quick actions ── */
.fab-quick-actions {
  display: flex;
  gap: 5px;
  padding: 6px 10px 4px;
  border-top: var(--glass-border);
  flex-wrap: wrap;
  flex-shrink: 0;
}

.fab-quick-btn {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-soft);
  cursor: pointer;
  transition: var(--transition);
}

.fab-quick-btn:hover {
  background: var(--accent-soft);
  border-color: rgba(200,16,46,0.3);
  color: var(--accent-light);
}

/* ── FAB input row ── */
.fab-input-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.65rem;
  border-top: var(--glass-border);
  background: rgba(255,255,255,0.02);
  flex-shrink: 0;
}

.fab-input {
  flex: 1;
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.65rem;
  font-size: 0.82rem;
  outline: none;
  background: rgba(255,255,255,0.04);
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.fab-input::placeholder { color: var(--text-muted); opacity: 0.5; }

.fab-input:focus {
  border-color: rgba(200,16,46,0.3);
  box-shadow: 0 0 12px rgba(200,16,46,0.07);
}

.fab-send-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.fab-send-btn.has-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.fab-send-btn:hover.has-text { opacity: 0.9; }

/* Apply action button */
.fab-apply-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin: 4px 0;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border: none;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
}

.fab-apply-btn:hover { opacity: 0.85; }
.fab-apply-btn:disabled { opacity: 0.5; cursor: default; }

.fab-apply-btn--batch {
  margin-top: 8px;
  width: 100%;
  justify-content: center;
}

/* Inline action label shown in batch mode before "Aplicar todo" */
.fab-action-pending {
  display: inline-block;
  margin: 2px 4px 2px 0;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
  background: rgba(200,16,46,0.12);
  color: var(--accent-light);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
}

/* System feedback messages (applied / error confirmation) */
.fab-msg.system {
  font-size: 0.72rem;
  color: var(--text-muted, rgba(255,255,255,0.4));
  text-align: center;
  padding: 0.2rem 0.5rem;
  background: none;
}

/* Markdown inside fab messages */
.fab-msg.assistant p { margin: 0 0 0.4em; }
.fab-msg.assistant p:last-child { margin-bottom: 0; }
.fab-msg.assistant strong { font-weight: 700; color: var(--text-primary); }
.fab-msg.assistant code {
  background: rgba(200,16,46,0.08);
  border-radius: 3px;
  padding: 0.1em 0.35em;
  font-size: 0.85em;
  color: var(--accent-light);
  font-family: var(--font-mono);
}
.fab-msg.assistant pre {
  background: rgba(0,0,0,0.3);
  border-radius: var(--radius-sm);
  padding: 0.5em;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8em;
}
.fab-msg.assistant pre code { background: none; padding: 0; }
.fab-msg.assistant ul, .fab-msg.assistant ol { padding-left: 1.2em; margin: 0.25em 0; }
.fab-msg.assistant li { margin-bottom: 0.15em; }


/* ============================================================
   FASE 2A — ANIMACIONES ADICIONALES
   ============================================================ */

/* Nodo nuevo: escala desde 0 → 1 con resorte */
@keyframes node-enter {
  from { transform: translate(-50%, -50%) scale(0.5); opacity: 0; }
  to   { transform: translate(-50%, -50%) scale(1);   opacity: 1; }
}
.node--entering { animation: node-enter 0.28s cubic-bezier(0.34, 1.56, 0.64, 1) both; }

/* Inspector: desliza desde la derecha */
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(18px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Toast: entrada desde abajo (complemento al .show existente) */
.diagram-toast { animation: none; }


/* ============================================================
   FASE 3A — NUEVOS TIPOS DE NODO
   ============================================================ */

/* Fondo de icono */
.node.firewall .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(239,68,68,0.18), rgba(239,68,68,0.04));
  box-shadow: 0 0 0 1px rgba(239,68,68,0.12) inset;
}
.node.server .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(16,185,129,0.18), rgba(16,185,129,0.04));
  box-shadow: 0 0 0 1px rgba(16,185,129,0.12) inset;
}
.node.cloud .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(96,165,250,0.18), rgba(96,165,250,0.04));
  box-shadow: 0 0 0 1px rgba(96,165,250,0.12) inset;
}
.node.ap .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(245,158,11,0.18), rgba(245,158,11,0.04));
  box-shadow: 0 0 0 1px rgba(245,158,11,0.12) inset;
}

.node.plc .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(124,58,237,0.18), rgba(124,58,237,0.04));
  box-shadow: 0 0 0 1px rgba(124,58,237,0.12) inset;
}

.node.ur3 .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(3,105,161,0.18), rgba(3,105,161,0.04));
  box-shadow: 0 0 0 1px rgba(3,105,161,0.12) inset;
}

.node.agv .node-icon {
  background: radial-gradient(circle at 38% 34%, rgba(180,83,9,0.18), rgba(180,83,9,0.04));
  box-shadow: 0 0 0 1px rgba(180,83,9,0.12) inset;
}


/* ============================================================
   FASE 2C — TEMA CLARO / OSCURO
   ============================================================ */

/* Botón toggle sol/luna en la navbar */
.theme-toggle-btn {
  width: 28px; height: 28px;
  border-radius: 7px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.65);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  transition: all var(--transition);
  flex-shrink: 0;
}
.theme-toggle-btn:hover { background: rgba(255,255,255,0.14); color: #fff; }

/* ── Overrides del tema claro ── */
[data-theme="light"] {
  --bg-primary:       #f0f2f5;
  --bg-surface:       rgba(0,0,0,0.03);
  --bg-glass:         rgba(0,0,0,0.04);
  --bg-glass-hover:   rgba(0,0,0,0.07);
  --bg-glass-border:  rgba(0,0,0,0.10);
  --text-primary:     #1a1a1a;
  --text-secondary:   #4a4a4a;
  --text-soft:        #444444;
  --text-muted:       #666666;
  --glass-bg:         rgba(255,255,255,0.85);
  --glass-border:     1px solid rgba(0,0,0,0.08);
  --glass-shadow:     0 4px 40px rgba(0,0,0,0.10), inset 0 1px 0 rgba(255,255,255,0.8);
  /* Legacy */
  --bg-dark:          #f0f2f5;
  --text:             #1a1a1a;
  --surface:          rgba(0,0,0,0.04);
  --surface-hover:    rgba(0,0,0,0.07);
}

[data-theme="light"] body { background-color: #f0f2f5; }

/* Canvas de red */
[data-theme="light"] .network-stage {
  background-color: #e8ecf2 !important;
  background-image:
    linear-gradient(to right, rgba(0,0,0,0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,0,0,0.045) 1px, transparent 1px) !important;
}

/* Nodos — card transparente en ambos temas */
[data-theme="light"] .node-label {
  color: #1a1a1a;
  text-shadow: 0 1px 3px rgba(255,255,255,0.9), 0 0 6px rgba(255,255,255,0.7);
}
[data-theme="light"] .node-meta { color: #555; text-shadow: 0 1px 2px rgba(255,255,255,0.8); }
[data-theme="light"] .node:hover .node-icon {
  filter: drop-shadow(0 0 7px rgba(0,0,0,0.2));
}
[data-theme="light"] .node-ind--link.off,
[data-theme="light"] .node-ind--net.off {
  background: rgba(0,0,0,0.2);
}

/* Inspector y panel de control */
[data-theme="light"] .inspector-overlay {
  background: rgba(245,247,250,0.97);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .field input,
[data-theme="light"] .field select {
  background: rgba(0,0,0,0.03);
  color: #1a1a1a;
  border-color: rgba(0,0,0,0.12);
}
[data-theme="light"] .field select option { background: #fff; color: #1a1a1a; }
[data-theme="light"] .muted { color: #777; }
[data-theme="light"] .mask-hint { color: #888; }
[data-theme="light"] .adv-modal {
  background: rgba(245,247,250,0.99);
  border-color: rgba(0,0,0,0.09);
}
[data-theme="light"] .adv-modal-body textarea {
  background: rgba(0,0,0,0.03);
  color: #1a1a1a;
  border-color: rgba(0,0,0,0.12);
}
[data-theme="light"] .preset-btn {
  background: rgba(0,0,0,0.04);
  color: #555;
  border-color: rgba(0,0,0,0.12);
}
[data-theme="light"] .preset-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(200,16,46,0.07);
}
[data-theme="light"] .adv-open-btn { color: #888; border-color: rgba(0,0,0,0.15); }

/* Menubar y navbar: sin overrides — se mantienen en oscuro */

/* Terminal */
[data-theme="light"] .terminal-bottom {
  background: rgba(230,234,240,0.98);
  border-top-color: rgba(0,0,0,0.10);
}
[data-theme="light"] .terminal-bottom .terminal-output {
  background: transparent; color: #1a1a2a;
}
[data-theme="light"] .terminal-bottom .terminal-input {
  background: rgba(255,255,255,0.8);
  border-color: rgba(0,0,0,0.15);
  color: #1a1a1a;
}
[data-theme="light"] .terminal-bottom .terminal-input::placeholder { color: rgba(0,0,0,0.3); }
[data-theme="light"] .terminal-bottom-header { color: rgba(0,0,0,0.55); }
[data-theme="light"] .term-hdr-btn {
  color: rgba(0,0,0,0.55);
  border-color: rgba(0,0,0,0.12);
}
[data-theme="light"] .term-hdr-btn:hover { color: #000; background: rgba(0,0,0,0.07); }

/* Context menu */
[data-theme="light"] .node-ctx-menu {
  background: rgba(255,255,255,0.97);
  border-color: rgba(0,0,0,0.12);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
[data-theme="light"] .ctx-item { color: rgba(0,0,0,0.75); }
[data-theme="light"] .ctx-item:hover { background: rgba(0,0,0,0.06); color: #000; }
[data-theme="light"] .ctx-item.danger:hover { background: rgba(239,68,68,0.10); color: #dc2626; }

/* FAB AI panel */
[data-theme="light"] .ai-fab-panel {
  background: rgba(250,251,253,0.98);
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 8px 48px rgba(0,0,0,0.15);
}
[data-theme="light"] .fab-messages { background: rgba(0,0,0,0.02); }
[data-theme="light"] .fab-msg.assistant {
  background: rgba(0,0,0,0.04); color: #444;
  border-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .fab-input {
  background: rgba(0,0,0,0.03);
  border-color: rgba(0,0,0,0.10);
  color: #1a1a1a;
}

/* Navbar: sin overrides — se mantiene idéntica al tema oscuro */

/* Elementos inline — código y texto pequeño */
[data-theme="light"] code {
  background: rgba(200,16,46,0.08);
  color: #b0000e;
  border-radius: 3px;
  padding: 0 3px;
}
[data-theme="light"] small,
[data-theme="light"] .mask-hint { color: #777; }

/* Inspector — sombra más definida en fondo claro */
[data-theme="light"] .inspector-overlay {
  box-shadow: 0 8px 32px rgba(0,0,0,0.14), 0 2px 8px rgba(0,0,0,0.08);
}

/* Saber más — image background más legible en modo claro */
[data-theme="light"] .saber-mas-img-wrap {
  background: rgba(255,255,255,0.75);
  border-color: rgba(0,0,0,0.08);
}

/* Chat page */
[data-theme="light"] .chat-page-input {
  background: rgba(255,255,255,0.92);
  border-top-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .ai-message,
[data-theme="light"] .message.ai-message,
[data-theme="light"] .chat-page .ai-message,
[data-theme="light"] .chat-page .message.ai-message {
  background: rgba(0,0,0,0.04); color: #444;
  border-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .chat-input { color: #1a1a1a; }
[data-theme="light"] .input-wrapper {
  background: rgba(0,0,0,0.03);
  border-color: rgba(0,0,0,0.10);
}


/* ============================================================
   FASE 2B — RESPONSIVE ADICIONAL (touch / mobile diagrams)
   ============================================================ */

/* Touch feedback en nodos */
.node:active { transform: translate(-50%, -53%) scale(0.97); }

/* En móvil, el inspector ocupa el ancho completo y aparece desde abajo */
@media (max-width: 768px) {
  .inspector-overlay {
    top: auto;
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    animation: slideUp 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 55vh;
    overflow-y: auto;
    z-index: 300; /* above terminal (250) on mobile */
    padding-bottom: env(safe-area-inset-bottom);
  }
  @keyframes slideUp {
    from { transform: translateY(100%); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
  }

  /* Modo chips del chat en columna */
  .fab-panel-chips { flex-wrap: wrap; gap: 4px; }
}

/* ============================================================
   NIVEL × ENFOQUE — Chat panel chips
   ============================================================ */

.fab-mode-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--bg-glass-border);
  background: rgba(0,0,0,0.12);
}

.fab-mode-group {
  display: flex;
  align-items: center;
  gap: 3px;
}

.fab-mode-label {
  font-size: 0.6rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 2px;
}

.fab-nivel-chip,
.fab-enfoque-chip {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--bg-glass-border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.68rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.fab-nivel-chip:hover,
.fab-enfoque-chip:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.07);
}

.fab-nivel-chip.active,
.fab-enfoque-chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ============================================================
   CLARIFICATION FLOW — Inline follow-up cards
   ============================================================ */

.fab-clarification {
  background: rgba(200,16,46,0.06) !important;
  border-color: rgba(200,16,46,0.2) !important;
}

.fab-clarification-question {
  font-size: 0.8rem;
  color: var(--text-primary);
  margin: 0 0 8px;
  font-weight: 500;
}

.fab-clarification-options {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.fab-clarification-opt {
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--bg-glass-border);
  background: rgba(255,255,255,0.04);
  color: var(--text-secondary);
  font-size: 0.72rem;
  cursor: pointer;
  transition: var(--transition);
}

.fab-clarification-opt:hover {
  background: rgba(200,16,46,0.12);
  border-color: var(--accent);
  color: var(--text-primary);
}

.fab-clarification-opt.selected {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.fab-clarification-opt:disabled {
  opacity: 0.5;
  cursor: default;
}

/* ============================================================
   PREVIEW PANEL — Modal de previsualización de acciones
   ============================================================ */

.preview-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9000;
}

.preview-panel {
  background: var(--bg-primary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  width: min(440px, 90vw);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
  overflow: hidden;
}

.preview-header {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--bg-glass-border);
  flex-shrink: 0;
}

.preview-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.preview-items {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
  scrollbar-width: thin;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.preview-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 0.78rem;
}

.preview-op-add  { background: rgba(34,197,94,0.07);  border-color: rgba(34,197,94,0.2);  }
.preview-op-mod  { background: rgba(234,179,8,0.07);  border-color: rgba(234,179,8,0.2);  }
.preview-op-del  { background: rgba(239,68,68,0.07);  border-color: rgba(239,68,68,0.2);  }

.preview-op {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  flex-shrink: 0;
  width: 16px;
}

.preview-op-add  .preview-op { color: #22c55e; }
.preview-op-mod  .preview-op { color: #eab308; }
.preview-op-del  .preview-op { color: #ef4444; }

.preview-detail { color: var(--text-secondary); flex: 1; }

.preview-footer {
  display: flex;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1px solid var(--bg-glass-border);
  justify-content: flex-end;
  flex-shrink: 0;
}

.preview-btn {
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.preview-btn-cancel {
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
  border-color: var(--bg-glass-border);
}
.preview-btn-cancel:hover { background: rgba(255,255,255,0.11); color: var(--text-primary); }

.preview-btn-apply {
  background: var(--accent);
  color: #fff;
}
.preview-btn-apply:hover { background: #a50d25; }
.preview-btn-apply:disabled { opacity: 0.5; cursor: default; }

/* Light theme overrides */
[data-theme="light"] .preview-panel {
  background: rgba(245,247,250,0.99);
  border-color: rgba(0,0,0,0.09);
}
[data-theme="light"] .preview-detail { color: #444; }
[data-theme="light"] .fab-mode-row { background: rgba(0,0,0,0.04); }
[data-theme="light"] .fab-nivel-chip,
[data-theme="light"] .fab-enfoque-chip { color: #555; border-color: rgba(0,0,0,0.15); }
[data-theme="light"] .fab-nivel-chip:hover,
[data-theme="light"] .fab-enfoque-chip:hover { background: rgba(0,0,0,0.06); color: #1a1a1a; }
[data-theme="light"] .fab-nivel-chip.active,
[data-theme="light"] .fab-enfoque-chip.active { background: var(--accent); color: #fff; border-color: transparent; }
[data-theme="light"] .diagram-toast { color: #fff; }
[data-theme="light"] .fab-clarification { background: rgba(200,16,46,0.04) !important; }
[data-theme="light"] .fab-clarification-opt { color: #555; border-color: rgba(0,0,0,0.15); }

/* ── Cursor ghost (node placement) ─────────────────────── */
.cursor-ghost {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  width: 48px;
  height: 48px;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(10,10,15,0.55);
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 4px;
  transform: translate(-50%, -50%);
  transition: transform 0.05s linear;
}
.cursor-ghost.ghost--visible { display: flex; }
.cursor-ghost svg { width: 100%; height: 100%; }
.cursor-ghost.drop-flash {
  animation: ghost-drop 0.25s ease;
}
@keyframes ghost-drop {
  0%   { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  50%  { transform: translate(-50%, -50%) scale(1.35); opacity: 0.7; }
  100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}
.network-stage.has-link-tool { cursor: crosshair; }
.network-stage.has-link-tool .node { cursor: crosshair; }


/* ============================================================
   MOBILE GENERAL — Touch targets, safe-area, iOS fixes
   ============================================================ */

@media (max-width: 768px) {
  /* Prevent iOS Safari auto-zoom when focusing inputs
     (Safari zooms when font-size < 16px) */
  .fab-input,
  .chat-input,
  .terminal-input,
  .field input,
  .field select,
  .terminal-bottom .terminal-input {
    font-size: 16px;
  }

  /* Larger touch targets for navbar icon buttons */
  .onav-icon-btn,
  .cnav-icon-btn,
  .theme-toggle-btn {
    width: 38px;
    height: 38px;
  }

  /* Terminal: bottom sheet at 33dvh on mobile, resizable by drag */
  .terminal-bottom {
    position: fixed;
    height: 33dvh;
    border-radius: 20px 20px 0 0;
    z-index: 250;
  }

  /* Diagrams simulator: ensure stage fills height below fixed nav */
  .sim-stage-wrap {
    min-height: calc(100dvh - 48px);
  }

  /* Nav dropdown: position correctly under fixed navbar */
  .onav-dropdown {
    position: fixed;
    top: 48px;
    left: 0;
    min-width: 220px;
    z-index: 1100;
  }

  /* Toast: keep above AI panel FAB and terminal */
  .diagram-toast {
    bottom: calc(80px + env(safe-area-inset-bottom));
    right: 0.75rem;
    left: 0.75rem;
    text-align: center;
    z-index: 600;
  }
}

/* ── Touch devices (phone + tablet): chat input always visible ───────
   Uses hover:none + pointer:coarse instead of max-width so tablets
   (>768px) get the same fix as phones on iOS/Android Safari. */
@media (hover: none) and (pointer: coarse) {
  body:has(.chat-page) .chat-page-input {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 8px 20px calc(10px + env(safe-area-inset-bottom));
  }
  body:has(.chat-page) .chat-page-messages {
    padding-bottom: calc(80px + env(safe-area-inset-bottom));
  }

  /* Close buttons: larger + bordered so they're obvious on touch */
  #btn-term-close {
    min-width: 32px;
    height: 28px;
    border: 1px solid rgba(255,255,255,0.3) !important;
    border-radius: 6px;
    color: rgba(255,255,255,0.9) !important;
    font-size: 0.85rem;
  }
  [data-theme="light"] #btn-term-close {
    border-color: rgba(0,0,0,0.2) !important;
    color: rgba(0,0,0,0.75) !important;
  }
  .fab-panel-close {
    min-width: 32px;
    height: 28px;
    border-radius: 6px;
    font-size: 0.85rem;
  }
}

/* ── Print stylesheet ──────────────────────────────────── */
@media print {
  /* Hide all navigation and panels */
  .obsidiana-nav,
  .onav-mobile-menu,
  #inspector-overlay,
  #terminal-bottom,
  .ai-side-wrap,
  .status-badge,
  #node-ctx-menu,
  #cursor-ghost,
  #presentation-hint,
  .diagram-toast { display: none !important; }

  /* Let the diagram stage fill the page */
  body { background: #fff !important; margin: 0; }
  .sim-stage-wrap { position: static !important; top: 0 !important; height: auto !important; }
  .network-stage  { overflow: visible !important; height: auto !important; min-height: 90vh; }
  .stage-world    { transform: none !important; }

  /* Print title */
  .sim-stage-wrap::before {
    content: "CAPA 8 — Diagrama de red";
    display: block;
    font-family: sans-serif;
    font-size: 14pt;
    font-weight: bold;
    padding: 0.5cm 0 0.3cm;
    border-bottom: 1px solid #ccc;
    margin-bottom: 0.3cm;
  }

  /* Ensure SVG links are visible on white */
  .stage-svg line, .stage-svg path { stroke: #555 !important; }
  .node { background: #f0f0f0 !important; border: 1px solid #999 !important; color: #000 !important; }
}