:root {
  --bg-dark: #0a0e17;
  --bg-panel: rgba(18, 26, 43, 0.8);
  --bg-panel-solid: #121a2b;
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-green: #00e676;
  --accent-purple: #7928ca;
  --text-main: #f0f4f8;
  --text-muted: #8e9eb5;
  --border-glass: rgba(255, 255, 255, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-glow: 0 8px 32px 0 rgba(0, 242, 254, 0.15);
  --shadow-dark: 0 10px 40px rgba(0, 0, 0, 0.5);
  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

.glass-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dark);
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
}

/* Header Responsive */
.top-nav {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  height: auto;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 18px;
  gap: 12px;
  z-index: 100;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 22px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: #000;
  box-shadow: var(--shadow-glow);
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.badge-tech {
  font-size: 11px;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  background: rgba(0, 242, 254, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Telemetría */
.telemetry-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  flex-wrap: wrap;
}

.stat-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.35);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.06);
  white-space: nowrap;
}

.stat-label {
  color: var(--text-muted);
}

.stat-val.highlight {
  color: var(--accent-cyan);
  font-weight: 600;
}

.stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
}

.stat-dot.pulse {
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 230, 118, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0); }
}

/* Botones y Selectores */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.source-select {
  background: rgba(0, 0, 0, 0.4);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-family: var(--font-main);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

.source-select option {
  background: var(--bg-panel-solid);
  color: var(--text-main);
}

button {
  font-family: var(--font-main);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #000;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-cyan);
}

.btn-icon {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

/* Visor 360 */
.viewer-main {
  flex: 1;
  position: relative;
  width: 100%;
  height: 100%;
}

.canvas-360-wrapper {
  width: 100%;
  height: 100%;
  cursor: grab;
}

.canvas-360-wrapper:active {
  cursor: grabbing;
}

.viewer-overlay {
  position: absolute;
  bottom: 96px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.drag-hint {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  animation: fadeInOut 5s forwards;
}

@keyframes fadeInOut {
  0% { opacity: 0; transform: translateY(10px); }
  15% { opacity: 1; transform: translateY(0); }
  85% { opacity: 1; }
  100% { opacity: 0; pointer-events: none; }
}

/* Dock de Resolución */
.resolution-dock,
.bottom-bar {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  z-index: 150;
  pointer-events: auto;
}

.dock-title,
.bar-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.mp-buttons {
  display: flex;
  gap: 8px;
  align-items: center;
}

.mp-btn {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  pointer-events: auto;
  user-select: none;
  transition: all 0.2s ease;
}

.mp-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: var(--text-main);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

.mp-btn:active {
  transform: scale(0.96);
}

.mp-btn.active {
  background: var(--accent-blue);
  color: #fff;
  font-weight: 600;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(79, 172, 254, 0.5);
}

.mp-btn.special.active {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.6);
}

/* Panel Deslizable (Drawer) */
.drawer {
  position: absolute;
  top: 16px;
  right: 16px;
  bottom: 16px;
  width: 390px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  transform: translateX(calc(100% + 32px));
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.drawer-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-glass);
}

.drawer-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.btn-close {
  background: transparent;
  color: var(--text-muted);
  font-size: 18px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.calib-banner {
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--accent-cyan);
  line-height: 1.4;
}

.calib-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calib-group h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.slider-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slider-row label {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.slider-row label span {
  color: var(--text-main);
  font-family: var(--font-mono);
  font-weight: 500;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-main);
  cursor: pointer;
}

.drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 10px;
}

.feedback-msg {
  font-size: 13px;
  text-align: center;
  min-height: 20px;
  font-family: var(--font-mono);
}

.feedback-msg.success {
  color: var(--accent-green);
}

.feedback-msg.error {
  color: #ff5252;
}

/* Scrollbar */
.custom-scroll::-webkit-scrollbar {
  width: 6px;
}

.custom-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.custom-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}

.zoom-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.zoom-lbl {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}
.zoom-lbl strong {
  color: var(--accent-cyan);
}
.zoom-wrap input[type="range"] {
  width: 90px;
  height: 4px;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

/* ============================================================= */
/* Reglas de Diseño Adaptativo (Responsive / Mobile / Tablet)   */
/* ============================================================= */

@media (max-width: 1280px) {
  .top-nav {
    justify-content: center;
    gap: 12px;
  }
  .brand {
    order: 1;
  }
  .telemetry-bar {
    order: 2;
  }
  .nav-actions {
    order: 3;
    width: 100%;
    justify-content: center;
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }
}

@media (max-width: 768px) {
  .top-nav {
    top: 8px;
    left: 8px;
    right: 8px;
    padding: 8px 10px;
    gap: 8px;
  }
  .brand-text h1 {
    font-size: 14px;
  }
  .badge-tech {
    display: none;
  }
  .telemetry-bar {
    font-size: 11px;
    gap: 6px;
  }
  .stat-badge {
    padding: 4px 8px;
  }
  .nav-actions {
    gap: 6px;
  }
  .nav-actions .btn-secondary {
    padding: 6px 8px;
    font-size: 11px;
  }
  .zoom-wrap {
    padding: 4px 8px;
  }
  .zoom-wrap input[type="range"] {
    width: 60px;
  }
  .resolution-dock {
    bottom: 10px;
    padding: 6px 10px;
    max-width: 96vw;
    gap: 6px;
  }
  .dock-title {
    display: none;
  }
  .mp-btn {
    padding: 5px 8px;
    font-size: 11px;
  }
  .drawer {
    width: 100vw;
    right: 0;
    top: 0;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
  }
}

/* ============================================================= */
/* Modo Inmersivo: Ocultar / Mostrar Interfaz y Opciones         */
/* ============================================================= */

body.ui-hidden .top-nav,
body.ui-hidden .resolution-dock,
body.ui-hidden .drawer,
body.ui-hidden .viewer-overlay {
  opacity: 0 !important;
  pointer-events: none !important;
  transform: translateY(-20px) !important;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-restore-btn {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 99999;
  background: rgba(10, 16, 24, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  font-size: 12px;
  align-items: center;
  transition: all 0.2s ease;
  animation: fadeIn 0.3s ease;
}

.floating-restore-btn:hover {
  border-color: var(--accent-cyan);
  background: rgba(15, 23, 42, 0.95);
  transform: scale(1.03);
}

body.ui-hidden .floating-restore-btn {
  display: flex !important;
}

/* Vista previa PiP de Video en vivo */
.live-pip-preview {
  position: fixed;
  z-index: 99;
  right: 14px;
  bottom: 80px;
  width: 140px;
  height: 70px;
  object-fit: cover;
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  background: #000;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  transition: opacity 0.3s ease, transform 0.2s ease;
}

.live-pip-preview:hover {
  transform: scale(1.05);
  border-color: var(--accent-cyan);
}

body.ui-hidden .live-pip-preview {
  opacity: 0 !important;
  pointer-events: none;
}

/* Selector Unificado de Motor C++ (Cursor / Antigravity) */
.engine-switch-group {
  display: inline-flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 20px;
  padding: 3px;
  gap: 3px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
  transition: all 0.3s ease;
}

.engine-toggle-btn {
  background: transparent;
  border: none;
  color: #94a3b8;
  font-family: 'Outfit', sans-serif;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  outline: none;
}

.engine-toggle-btn:hover:not(:disabled) {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.engine-toggle-btn.active {
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(14, 165, 233, 0.5);
}

.engine-toggle-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.engine-switch-group.switching {
  border-color: #f59e0b;
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.4);
}