/* ==========================================================================
   Simulador de Óptica 2D - Ambystoma Technologies
   style.css - Estilos Premium Dark Theme y Cyber-Optics
   ========================================================================== */

:root {
  --bg-dark: #0f111a;
  --bg-panel: #171926;
  --bg-surface: #212436;
  --bg-hover: #2d3148;
  --border: #363b58;
  --border-light: rgba(255, 255, 255, 0.1);
  --accent: #00ffcc;
  --accent-hover: #33ffdf;
  --accent-dark: #00b38f;
  --accent-glow: rgba(0, 255, 204, 0.4);
  --text-main: #e6edf3;
  --text-dim: #8b949e;
  --danger: #ff5577;
  --warning: #ffb86c;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 13px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

/* --- HEADER NAVBAR --- */
.header-navbar {
  min-height: 58px;
  height: 60px;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 100;
  flex-shrink: 0;
  gap: 1.25rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  cursor: pointer;
  flex-shrink: 0;
}

.navbar-logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
  transition: transform 0.2s ease, filter 0.2s ease;
  cursor: pointer;
}

.navbar-logo-img:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 12px var(--accent-glow));
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
}

.brand-text h1 span {
  color: var(--accent);
  text-shadow: 0 0 12px var(--accent-glow);
}

.brand-text p {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* --- ESPACIO PUBLICITARIO CENTRAL EN EL HEADER --- */
.header-ad-zone {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  max-height: 52px;
  padding: 0 0.5rem;
  overflow: hidden;
}

.ad-tag-header {
  font-size: 0.62rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
  opacity: 0.75;
}

.ad-slot-box-header {
  height: 46px;
  min-height: 38px;
  width: 100%;
  max-width: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.nav-right-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

/* Selector de Idiomas con Banderas Circulares */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 3px 6px;
  border-radius: 9999px;
  border: 1px solid var(--border);
}

.lang-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  opacity: 0.6;
}

.lang-btn:hover {
  opacity: 1;
  transform: scale(1.12);
}

.lang-btn.active {
  opacity: 1;
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  transform: scale(1.06);
}

.lang-btn svg {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 50%;
  pointer-events: none;
}

.btn-nav-about {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 9999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-nav-about:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.badge-security {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(0, 255, 204, 0.1);
  border: 1px solid rgba(0, 255, 204, 0.3);
  color: var(--accent);
  border-radius: 9999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
}

/* --- TOOLBAR DE HERRAMIENTAS (Debajo del espacio de trabajo) --- */
.toolbar-bottom,
.toolbar-top {
  background-color: var(--bg-panel);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  z-index: 90;
  flex-shrink: 0;
  min-height: 44px;
}

/* Información de Estado y Coordenadas Integradas a la Derecha de Limpiar Escena */
.toolbar-status-inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  margin-left: 0.5rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--border);
  gap: 0.75rem;
  min-width: 200px;
}

.status-msg-inline {
  color: var(--text-dim);
  font-size: 0.78rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-coords-inline {
  color: var(--accent);
  font-family: monospace;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  background: rgba(0, 255, 204, 0.08);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid rgba(0, 255, 204, 0.2);
  margin-left: auto;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-tool {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.85rem;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-tool:hover {
  background-color: var(--bg-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.btn-tool.active {
  background-color: var(--accent-dark);
  color: #0f111a;
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  font-weight: 700;
}

/* Botón Finalizar dibujo de polígono */
.btn-finish-draw {
  background-color: var(--accent);
  color: #0f111a;
  border: 1px solid var(--accent);
  font-weight: 700;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-finish-draw:not(:disabled) {
  background: linear-gradient(135deg, #00ffcc 0%, #00cc99 100%);
  color: #0b0e14;
  box-shadow: 0 0 12px rgba(0, 255, 204, 0.5);
  animation: pulse-finish-draw 2s infinite ease-in-out;
  cursor: pointer;
}

.btn-finish-draw:not(:disabled):hover {
  background: #00ffcc;
  box-shadow: 0 0 18px var(--accent-glow);
  color: #0b0e14;
  transform: translateY(-1px) scale(1.02);
}

.btn-finish-draw:disabled {
  background-color: rgba(255, 255, 255, 0.04) !important;
  color: #64748b !important;
  border-color: rgba(255, 255, 255, 0.08) !important;
  box-shadow: none !important;
  cursor: not-allowed !important;
  opacity: 0.4 !important;
  transform: none !important;
  animation: none !important;
  pointer-events: none;
}

@keyframes pulse-finish-draw {
  0% { box-shadow: 0 0 8px rgba(0, 255, 204, 0.35); }
  50% { box-shadow: 0 0 18px rgba(0, 255, 204, 0.85); }
  100% { box-shadow: 0 0 8px rgba(0, 255, 204, 0.35); }
}

/* Botón DEDICADO: Agregar Nueva Fuente de Luz */
.btn-add-source-special {
  background: linear-gradient(135deg, rgba(0, 255, 204, 0.22) 0%, rgba(33, 36, 54, 0.95) 100%);
  border: 1px solid var(--accent);
  color: #ffffff;
  font-weight: 700;
  padding: 0.45rem 0.95rem;
  box-shadow: 0 0 10px rgba(0, 255, 204, 0.25);
}

.btn-add-source-special:hover {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #0f111a;
  box-shadow: 0 0 16px var(--accent-glow);
  transform: translateY(-1px);
}

/* Botón DEDICADO: Pantalla Detectora */
.btn-add-screen-special {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.22) 0%, rgba(33, 36, 54, 0.95) 100%);
  border: 1px solid #facc15;
  color: #fef08a;
  font-weight: 700;
  padding: 0.45rem 0.95rem;
  box-shadow: 0 0 10px rgba(250, 204, 21, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-add-screen-special:hover {
  background: linear-gradient(135deg, #facc15 0%, #ca8a04 100%);
  color: #0f111a;
  box-shadow: 0 0 16px rgba(250, 204, 21, 0.6);
  transform: translateY(-1px);
}

.btn-add-screen-special:active {
  transform: translateY(1px);
}

/* Desplegables Select */
.select-optics {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.75rem;
  font-family: inherit;
  font-size: 0.82rem;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s ease;
}

.select-optics:focus, .select-optics:hover {
  border-color: var(--accent);
}

.toolbar-separator {
  width: 1px;
  height: 24px;
  background-color: var(--border);
  margin: 0 0.35rem;
}

.btn-clear-scene {
  background-color: rgba(255, 85, 119, 0.12);
  border-color: rgba(255, 85, 119, 0.35);
  color: #ff859d;
}

.btn-clear-scene:hover {
  background-color: var(--danger);
  border-color: var(--danger);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(255, 85, 119, 0.5);
}

/* --- BANNER DE PUBLICIDAD SUPERIOR --- */
.ad-banner-top {
  background-color: #090b12;
  border-bottom: 1px solid var(--border);
  padding: 0.25rem 1rem;
  text-align: center;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.ad-tag {
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ad-slot-box {
  min-height: 20px;
  width: 100%;
  max-width: 728px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- MAIN WORKSPACE LAYOUT (3 Columnas) --- */
.workspace-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Panel Izquierdo: Lista de Elementos & Detector */
.panel-left {
  width: 250px;
  background-color: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}

/* Barra de Guardar / Abrir Escena */
.scene-io-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  padding: 0.65rem 0.75rem 0.35rem 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-scene-io {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.45rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.btn-save-scene {
  background: linear-gradient(135deg, rgba(0, 255, 204, 0.15) 0%, rgba(33, 36, 54, 0.9) 100%);
  border: 1px solid rgba(0, 255, 204, 0.4);
  color: #00ffcc;
}

.btn-save-scene:hover {
  background: linear-gradient(135deg, rgba(0, 255, 204, 0.35) 0%, rgba(0, 180, 140, 0.8) 100%);
  color: #0f111a;
  box-shadow: 0 0 10px rgba(0, 255, 204, 0.4);
  transform: translateY(-1px);
}

.btn-open-scene {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18) 0%, rgba(33, 36, 54, 0.9) 100%);
  border: 1px solid rgba(129, 140, 248, 0.4);
  color: #a5b4fc;
}

.btn-open-scene:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.4) 0%, rgba(79, 70, 229, 0.8) 100%);
  color: #ffffff;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.btn-scene-io:active {
  transform: translateY(1px);
}

/* Panel Derecho: Parámetros y Física */
.panel-right {
  width: 290px;
  background-color: var(--bg-panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  padding: 0.75rem 1rem 2rem;
  gap: 1rem;
}

/* Área Central del Canvas */
.canvas-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-dark);
  display: flex;
  flex-direction: column;
}

#optics-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
  touch-action: none;
}

/* Controles Flotantes de Zoom sobre el Canvas */
.canvas-view-controls {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: rgba(23, 25, 38, 0.85);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
  backdrop-filter: blur(8px);
  z-index: 10;
}

.btn-view-ctl {
  width: 30px;
  height: 30px;
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: bold;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.btn-view-ctl:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-hover);
}

/* --- COMPONENTES DE PANELES (GroupBoxes & Cards) --- */
.group-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.group-title {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(0, 255, 204, 0.2);
  padding-bottom: 0.35rem;
}

/* Lista de Elementos (Panel Izquierdo) */
.scene-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.5rem;
  flex: 1;
  overflow-y: auto;
}

.scene-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.scene-item:hover {
  background-color: var(--bg-hover);
  border-color: var(--accent);
}

.scene-item.selected {
  border-color: var(--accent);
  background-color: rgba(0, 255, 204, 0.12);
  border-left: 4px solid var(--accent);
}

.scene-item-icon {
  font-size: 1rem;
}

.scene-item-name {
  flex: 1;
  font-size: 0.82rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scene-item-toggle {
  cursor: pointer;
  accent-color: var(--accent);
}

.scene-list-empty {
  color: var(--text-dim);
  text-align: center;
  padding: 1.5rem 0.5rem;
  font-style: italic;
}

.btn-delete-element {
  background-color: rgba(255, 85, 119, 0.15);
  border: 1px solid var(--danger);
  color: #ff859d;
  font-weight: 600;
  border-radius: 6px;
  padding: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 0.5rem;
}

.btn-delete-element:hover {
  background-color: var(--danger);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(255, 85, 119, 0.6);
}

/* Detector Monitor */
.detector-box {
  margin: 0.5rem;
  background: rgba(15, 17, 26, 0.8);
  border: 1px solid rgba(250, 204, 21, 0.3);
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.8rem;
  color: #f1f5f9;
}

/* Controles Deslizantes (Sliders & Inputs) */
.ctrl-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.ctrl-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.ctrl-value {
  color: var(--accent);
  font-weight: 700;
}

.slider-custom {
  width: 100%;
  height: 6px;
  background: var(--bg-hover);
  border-radius: 3px;
  outline: none;
  accent-color: var(--accent);
  cursor: pointer;
}

.input-num {
  background-color: var(--bg-dark);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  font-family: inherit;
  font-size: 0.85rem;
  width: 100%;
}

.input-num:focus {
  border-color: var(--accent);
  outline: none;
}

/* Preajustes de Materiales */
.preset-buttons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.btn-mat-preset {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 4px;
  padding: 0.35rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-mat-preset:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Checkboxes estilizados */
.chk-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  cursor: pointer;
  user-select: none;
}

.chk-row input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

/* Vista previa de Color por Longitud de Onda */
.wl-preview-bar {
  height: 8px;
  border-radius: 4px;
  margin-top: 0.25rem;
  background: rgb(0, 255, 0);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background-color 0.1s linear;
}

/* Publicidad en Sidebar */
.ad-sidebar-card {
  background-color: #0b0d14;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  text-align: center;
  margin-top: auto;
}



/* --- MODAL ABOUT --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 1rem;
  max-width: 600px;
  width: 100%;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 30px var(--accent-glow);
  display: flex;
  flex-direction: column;
  animation: scaleIn 0.2s ease;
}

@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

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

.modal-header h3 {
  font-size: 1.2rem;
  color: #ffffff;
}

.btn-close-modal {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0 0.5rem;
  line-height: 1;
}

.btn-close-modal:hover {
  color: var(--danger);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.88rem;
  line-height: 1.6;
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  text-align: right;
}

.btn-primary {
  background-color: var(--accent);
  color: #0f111a;
  border: none;
  font-weight: 700;
  padding: 0.55rem 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 0 14px var(--accent-glow);
}

/* --- TOASTS --- */
.toast-container {
  position: fixed;
  bottom: 38px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
  pointer-events: none;
}

.toast {
  background: rgba(23, 25, 38, 0.95);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  pointer-events: auto;
  font-size: 0.84rem;
}

.toast-success {
  border-color: var(--accent);
}

.toast-warning {
  border-color: var(--warning);
}

.toast-badge {
  font-weight: bold;
}

/* ==========================================================================
   ESTILOS PARA DISPOSITIVOS MÓVILES (TELÉFONOS CELULARES Y TABLETS)
   ========================================================================== */

/* Botones de alternancia de paneles en el Header */
.btn-nav-mobile-toggle {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 9999px;
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-nav-mobile-toggle:hover,
.btn-nav-mobile-toggle.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 255, 204, 0.12);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Botones Desplegables de Paneles en Móviles sobre el Canvas */
.side-tab-toggle {
  display: none;
  position: absolute;
  top: 10px !important;
  transform: none !important;
  background: rgba(23, 25, 38, 0.92);
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6), 0 0 12px rgba(0, 255, 204, 0.3);
  z-index: 170;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  user-select: none;
  touch-action: manipulation;
  transition: left 0.25s cubic-bezier(0.16, 1, 0.3, 1), right 0.25s cubic-bezier(0.16, 1, 0.3, 1), background 0.2s, color 0.2s;
}

.side-tab-toggle:hover,
.side-tab-toggle:active {
  background: var(--accent);
  color: #0f111a;
  box-shadow: 0 0 18px var(--accent-glow);
}

.side-tab-left {
  left: 10px !important;
}

.side-tab-left.is-open {
  left: 246px !important;
  background: rgba(0, 255, 204, 0.22);
}

.side-tab-right {
  right: 10px !important; /* Ocupa exactamente la posición de los botones (+, -, 1:1) */
}

.side-tab-right.is-open {
  right: 256px !important;
  background: rgba(0, 255, 204, 0.22);
}

.tab-arrow {
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1;
}

/* Cabeceras de Drawer dentro de los paneles en Móvil */
.mobile-drawer-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.mobile-drawer-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--accent);
}

.btn-close-drawer {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 6px;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-close-drawer:hover {
  color: #ffffff;
  border-color: var(--danger);
  background: rgba(255, 85, 119, 0.15);
}

/* Backdrop para Drawer en Móviles - DESACTIVADO para ver y manipular la simulación en tiempo real */
.drawer-backdrop,
.drawer-backdrop.active {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Modal Cartel Inicial de Recomendación de Escritorio */
.modal-mobile-overlay {
  z-index: 1100;
}

.modal-card-mobile-warning {
  max-width: 440px;
  border: 1px solid rgba(0, 255, 204, 0.4);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.85), 0 0 35px rgba(0, 255, 204, 0.25);
  border-radius: 16px;
  text-align: center;
}

.modal-mobile-icon-box {
  padding-top: 1.25rem;
  display: flex;
  justify-content: center;
}

.device-icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: rgba(0, 255, 204, 0.1);
  border: 1px solid rgba(0, 255, 204, 0.35);
  padding: 0.5rem 1.1rem;
  border-radius: 9999px;
  box-shadow: 0 0 18px rgba(0, 255, 204, 0.2);
}

.device-icon-desktop {
  font-size: 1.8rem;
  animation: pulseDevice 2s infinite ease-in-out;
}

.device-icon-mobile {
  font-size: 1.4rem;
  opacity: 0.75;
}

@keyframes pulseDevice {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 4px rgba(0, 255, 204, 0.4)); }
  50% { transform: scale(1.08); filter: drop-shadow(0 0 12px rgba(0, 255, 204, 0.8)); }
}

.modal-header-center {
  justify-content: center;
  border-bottom: none;
  padding: 0.75rem 1.25rem 0.25rem;
}

.modal-mobile-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
}

.modal-body-mobile {
  padding: 0.5rem 1.25rem 1rem;
  gap: 0.85rem;
  text-align: center;
}

.modal-mobile-highlight-msg {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0, 255, 204, 0.09);
  border: 1px solid rgba(0, 255, 204, 0.3);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  line-height: 1.45;
  box-shadow: 0 0 14px rgba(0, 255, 204, 0.1);
}

.modal-mobile-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.modal-mobile-tips-container {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  text-align: left;
  margin-top: 0.25rem;
}

.mobile-tip-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.78rem;
  color: var(--text-main);
}

.tip-badge {
  font-size: 1.05rem;
  flex-shrink: 0;
}

.tip-text {
  line-height: 1.35;
}

.modal-footer-center {
  justify-content: center;
  border-top: 1px solid var(--border-light);
  padding: 1rem 1.25rem;
}

.btn-mobile-continue {
  width: 100%;
  padding: 0.75rem 1.25rem;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: 10px;
  box-shadow: 0 0 15px var(--accent-glow);
}

/* ==========================================================================
   MEDIA QUERIES RESPONSIVAS
   ========================================================================== */

@media (max-width: 1100px) {
  .header-ad-zone {
    display: none;
  }
}

@media (max-width: 900px) {
  .btn-nav-mobile-toggle {
    display: none !important;
  }

  .badge-security {
    display: none;
  }

  .mobile-drawer-header {
    display: flex;
  }

  /* Barra de herramientas inferior con scroll horizontal táctil suave */
  .toolbar-bottom {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0.45rem 0.65rem;
    gap: 0.45rem;
    scrollbar-width: none;
  }

  .toolbar-bottom::-webkit-scrollbar {
    display: none;
  }

  .btn-tool,
  .select-optics {
    flex-shrink: 0;
    font-size: 0.8rem;
    padding: 0.45rem 0.75rem;
    min-height: 38px;
  }

  .toolbar-status-inline {
    display: none;
  }
}

@media (max-width: 600px) {
  .header-navbar {
    padding: 0 0.65rem;
    gap: 0.5rem;
    height: 54px;
    min-height: 54px;
  }

  .brand-text h1 {
    font-size: 0.95rem;
  }

  .brand-text p {
    display: none;
  }

  .navbar-logo-img {
    height: 32px;
  }

  .nav-right-actions {
    gap: 0.4rem;
  }

  .btn-nav-about {
    padding: 0.3rem 0.55rem;
    font-size: 0.74rem;
  }

  .btn-nav-mobile-toggle {
    padding: 0.3rem 0.55rem;
    font-size: 0.74rem;
  }

  .canvas-view-controls {
    display: none !important;
  }
}

/* ==========================================================================
   BLOQUEO / OBLIGATORIEDAD DE VISTA HORIZONTAL EN MÓVILES
   ========================================================================== */

.landscape-lock-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, #171926 0%, #090b12 100%);
  z-index: 999999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
}

/* Solo se activa si la pantalla es móvil Y está en orientación vertical (portrait) */
@media (max-width: 900px) and (orientation: portrait) {
  .landscape-lock-overlay {
    display: flex !important;
  }
}

.landscape-lock-card {
  max-width: 380px;
  background: rgba(23, 25, 38, 0.95);
  border: 1px solid rgba(0, 255, 204, 0.35);
  border-radius: 20px;
  padding: 2rem 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 255, 204, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.landscape-phone-animation {
  position: relative;
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-anim-body {
  width: 32px;
  height: 54px;
  border: 3px solid var(--accent);
  border-radius: 7px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: rotatePhone 2.5s infinite ease-in-out;
  box-shadow: 0 0 15px rgba(0, 255, 204, 0.4);
}

.phone-anim-screen {
  width: 80%;
  height: 80%;
  background: rgba(0, 255, 204, 0.12);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-laser-dot {
  width: 6px;
  height: 6px;
  background: #ff5577;
  border-radius: 50%;
  box-shadow: 0 0 8px #ff5577;
}

.phone-anim-arrow {
  position: absolute;
  top: -8px;
  right: -8px;
  font-size: 1.4rem;
  color: var(--accent);
  animation: spinArrow 2.5s infinite linear;
}

@keyframes rotatePhone {
  0%, 20% { transform: rotate(0deg); }
  50%, 75% { transform: rotate(90deg); }
  90%, 100% { transform: rotate(0deg); }
}

@keyframes spinArrow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.landscape-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-top: 0.25rem;
}

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

.landscape-desktop-notice {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0, 255, 204, 0.08);
  border: 1px solid rgba(0, 255, 204, 0.25);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  line-height: 1.4;
}

.btn-rotate-request {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: 10px;
}

/* ==========================================================================
   VISTA HORIZONTAL MÓVIL (LANDSCAPE ERGONÓMICO EN SMARTPHONES)
   ========================================================================== */
@media (max-height: 600px), (max-width: 950px), (pointer: coarse) and (orientation: landscape) {
  /* Mostrar botones desplegables sobre el canvas en las esquinas superiores */
  .side-tab-toggle {
    display: inline-flex !important;
    top: 10px !important;
    transform: none !important;
  }

  /* Ocultar botones de zoom (+, -, 1:1) en móvil: eliminados completamente de la vista */
  .canvas-view-controls {
    display: none !important;
  }

  .header-navbar {
    height: 40px !important;
    min-height: 40px !important;
    padding: 0 0.75rem !important;
    gap: 0.5rem !important;
  }

  .navbar-logo-img {
    height: 24px !important;
  }

  .brand-text h1 {
    font-size: 0.82rem !important;
  }

  .brand-text p {
    display: none !important;
  }

  .header-ad-zone {
    display: none !important;
  }

  .badge-security {
    display: none !important;
  }

  .btn-nav-about {
    padding: 0.2rem 0.5rem !important;
    font-size: 0.72rem !important;
  }

  .btn-nav-mobile-toggle {
    display: none !important;
  }

  /* Barras laterales deslizables sobre el canvas sin oscurecer ni bloquear la simulación */
  .panel-left,
  .panel-right {
    display: flex !important;
    position: fixed !important;
    top: 40px !important;
    bottom: 38px !important;
    z-index: 165 !important;
    background: rgba(15, 17, 26, 0.95) !important;
    backdrop-filter: blur(14px) !important;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.85) !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    padding: 0.5rem 0.65rem 1rem !important;
    pointer-events: auto !important;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }

  .panel-left {
    left: 0 !important;
    width: 240px !important;
    max-width: 46vw !important;
    border-right: 1px solid var(--border) !important;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.7) !important;
    transform: translateX(-100%) !important;
  }

  .panel-left.mobile-open {
    transform: translateX(0) !important;
  }

  .panel-right {
    right: 0 !important;
    width: 250px !important;
    max-width: 48vw !important;
    border-left: 1px solid var(--border) !important;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.7) !important;
    transform: translateX(100%) !important;
  }

  .panel-right.mobile-open {
    transform: translateX(0) !important;
  }

  /* Desplazamiento dinámico de los botones desplegables cuando el panel está abierto */
  .side-tab-left.is-open {
    left: 246px !important;
  }

  .side-tab-right.is-open {
    right: 256px !important;
  }

  .toolbar-bottom {
    height: 38px !important;
    min-height: 38px !important;
    padding: 0.2rem 0.5rem !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 0.35rem !important;
  }

  .btn-tool,
  .select-optics {
    height: 30px !important;
    min-height: 30px !important;
    padding: 0.15rem 0.55rem !important;
    font-size: 0.75rem !important;
  }

  .toolbar-status-inline {
    display: none !important;
  }
}