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

    :root {
      --bg-croma-green: #00ff00;
      --bg-croma-blue: #0047bb;
      --bg-dark: #121214;
      --bg-light: #f5f5f7;
      --panel-bg: rgba(24, 24, 27, 0.95);
      --panel-border: #323238;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --accent: #52525b;
      --primary: #3f3f46;
      --primary-hover: #52525b;
    }

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      min-height: 100vh;
      overflow: hidden;
      user-select: none;
      transition: background-color 0.25s ease;
      position: relative;
    }

    /* Fondo ajedrez transparente */
    body.bg-transparent {
      background-color: #1e1e24;
      background-image: 
        linear-gradient(45deg, #26262e 25%, transparent 25%),
        linear-gradient(-45deg, #26262e 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #26262e 75%),
        linear-gradient(-45deg, transparent 75%, #26262e 75%);
      background-size: 24px 24px;
      background-position: 0 0, 0 12px, 12px -12px, -12px 0px;
    }

    body.bg-croma-green { background-color: #00ff00 !important; }
    body.bg-croma-blue { background-color: #0033cc !important; }
    body.bg-dark { background-color: #0f0f11 !important; }
    body.bg-light { background-color: #f4f4f6 !important; }

    /* ========================================================
       STAGE / LIENZO DE ANIMACIÓN
       ======================================================== */
    #stage {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      overflow: hidden;
      pointer-events: none;
      z-index: 10;
      perspective: 1200px;
    }

    /* Elementos flotantes / popups */
    .spawn-item {
      position: absolute;
      pointer-events: none;
      will-change: transform, opacity;
      transform-origin: center center;
      display: inline-block;
      user-select: none;
    }

    .spawn-item img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
      filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.4));
    }

    /* Elementos en cascada (sin transformación centrada para rastro exacto en píxeles) */
    .cascade-item {
      position: absolute;
      pointer-events: none;
      will-change: transform;
      display: inline-block;
      user-select: none;
    }

    .cascade-item img {
      width: 100%;
      height: auto;
      display: block;
      filter: drop-shadow(1px 2px 4px rgba(0, 0, 0, 0.35));
    }

    /* ========================================================
       EFECTOS DE ENTRADA POP-UP
       ======================================================== */
    @keyframes popHacked {
      0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.92) skewX(-6deg);
        filter: drop-shadow(0 0 10px rgba(239, 68, 68, 0.8)) contrast(1.4);
      }
      20% {
        opacity: 1;
        transform: translate(calc(-50% + 4px), calc(-50% - 3px)) scale(1.04) skewX(4deg);
        filter: drop-shadow(-3px 0 0 #00ffff) drop-shadow(3px 0 0 #ff0055);
      }
      45% {
        transform: translate(calc(-50% - 3px), calc(-50% + 2px)) scale(0.98) skewX(-2deg);
        filter: drop-shadow(2px 0 0 #00ffff) drop-shadow(-2px 0 0 #ff0055);
      }
      70% {
        transform: translate(-50%, -50%) scale(1.01) skewX(0deg);
        filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.45));
      }
      100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) rotate(var(--rot, 0deg));
        filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.45));
      }
    }

    @keyframes popBounce {
      0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.2) rotate(var(--rot, 0deg));
      }
      65% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.15) rotate(var(--rot, 0deg));
      }
      85% {
        transform: translate(-50%, -50%) scale(0.95) rotate(var(--rot, 0deg));
      }
      100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) rotate(var(--rot, 0deg));
      }
    }

    @keyframes popFade {
      0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.85) rotate(var(--rot, 0deg));
      }
      100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) rotate(var(--rot, 0deg));
      }
    }

    @keyframes popDrop {
      0% {
        opacity: 0;
        transform: translate(-50%, -150%) scale(1.1) rotate(var(--rot, 0deg));
      }
      70% {
        opacity: 1;
        transform: translate(-50%, -45%) scale(0.98) rotate(var(--rot, 0deg));
      }
      100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) rotate(var(--rot, 0deg));
      }
    }

    @keyframes popZoom {
      0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(2) rotate(var(--rot, 0deg));
      }
      100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) rotate(var(--rot, 0deg));
      }
    }

    .anim-hacked { animation: popHacked 0.22s ease-out forwards; }
    .anim-bounce { animation: popBounce 0.38s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }
    .anim-fade { animation: popFade 0.28s ease-out forwards; }
    .anim-drop { animation: popDrop 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28) forwards; }
    .anim-zoom { animation: popZoom 0.32s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

    /* ========================================================
       BOTÓN 3 PUNTOS ARRIBA A LA DERECHA (MINIMALISTA / DISCRETO)
       ======================================================== */
    .top-menu-btn {
      position: fixed;
      top: 14px;
      right: 16px;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: transparent;
      border: none;
      box-shadow: none;
      color: #a1a1aa;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.15s ease;
      z-index: 90;
      opacity: 0.45;
    }

    .top-menu-btn:hover {
      background: rgba(255, 255, 255, 0.08);
      opacity: 1;
      color: #ffffff;
      transform: scale(1.06);
    }

    .top-menu-btn svg {
      width: 20px;
      height: 20px;
      fill: currentColor;
    }

    /* ========================================================
       MENSAJE DE BIENVENIDA INICIAL (DISCRETO Y CENTRADO)
       ======================================================== */
    .welcome-hint {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      background: rgba(24, 24, 27, 0.92);
      border: 1.5px solid #3f3f46;
      border-radius: 14px;
      padding: 16px 24px;
      text-align: center;
      z-index: 25;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
      cursor: pointer;
      user-select: none;
      transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .welcome-hint:hover {
      border-color: #71717a;
      background: rgba(39, 39, 42, 0.98);
      transform: translate(-50%, -52%);
    }

    .welcome-hint.hidden {
      opacity: 0;
      pointer-events: none;
      transform: translate(-50%, -44%);
    }

    .welcome-hint-title {
      font-size: 14.5px;
      font-weight: 800;
      color: #ffffff;
      letter-spacing: -0.2px;
    }

    .welcome-hint-sub {
      font-size: 12px;
      color: #a1a1aa;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 6px;
      flex-wrap: wrap;
      justify-content: center;
    }

    /* ========================================================
       PANEL DE CONTROL FLOTANTE A LA DERECHA
       ======================================================== */
    .control-panel {
      position: fixed;
      top: 56px;
      right: 16px;
      width: 400px;
      max-height: calc(100vh - 72px);
      background: #18181b;
      border: 1.5px solid #27272a;
      border-radius: 16px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
      z-index: 100;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      isolation: isolate;
      transform: translateZ(0);
      transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    }

    .control-panel.hidden {
      transform: translateX(120%);
      opacity: 0;
      pointer-events: none;
    }

    /* Tabs de navegación en el panel (Sin emojis) */
    .panel-tabs {
      display: flex;
      padding: 10px 14px 0 14px;
      background: #18181b;
      border-bottom: 1.5px solid #27272a;
      gap: 4px;
      border-radius: 16px 16px 0 0;
    }

    .tab-btn {
      flex: 1;
      padding: 10px 6px;
      background: transparent;
      border: none;
      border-bottom: 2.5px solid transparent;
      color: #a1a1aa;
      font-size: 11.5px;
      font-weight: 700;
      font-family: inherit;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 5px;
      transition: all 0.15s ease;
    }

    .tab-btn svg {
      flex-shrink: 0;
    }

    .tab-btn:hover {
      color: #ffffff;
    }

    .tab-btn.active {
      color: #ffffff;
      border-bottom-color: #e4e4e7;
    }

    /* Cuerpo deslizable del panel */
    .panel-body {
      padding: 18px 20px;
      overflow-y: auto;
      max-height: calc(100vh - 270px);
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .panel-body::-webkit-scrollbar {
      width: 6px;
    }
    .panel-body::-webkit-scrollbar-thumb {
      background: #3f3f46;
      border-radius: 4px;
    }

    .tab-content {
      display: none;
      flex-direction: column;
      gap: 16px;
    }

    .tab-content.active {
      display: flex;
    }

    /* ========================================================
       ZONA DROPZONE (+) Y GESTIÓN DE ARCHIVOS
       ======================================================== */
    .dropzone-box {
      border: 2px dashed #3f3f46;
      background: rgba(39, 39, 42, 0.35);
      border-radius: 12px;
      padding: 22px 16px;
      text-align: center;
      cursor: pointer;
      position: relative;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .dropzone-box:hover, .dropzone-box.dragover {
      background: rgba(63, 63, 70, 0.4);
      border-color: #71717a;
      transform: translateY(-1px);
    }

    /* Círculo gris plano sin degradado con centrado perfecto */
    .dropzone-plus-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #3f3f46;
      color: #ffffff;
      border: 1.5px solid #52525b;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin: 0 auto;
      pointer-events: none;
      transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.15s ease;
    }

    .dropzone-plus-circle svg {
      display: block;
      pointer-events: none;
    }

    .dropzone-box:hover .dropzone-plus-circle {
      transform: scale(1.08) rotate(90deg);
      background: #52525b;
    }

    .dropzone-text-main {
      font-size: 13.5px;
      font-weight: 700;
      color: #f3f4f6;
      letter-spacing: -0.2px;
      pointer-events: none;
    }

    #file-input {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      opacity: 0;
      cursor: pointer;
      z-index: 10;
    }

    /* Presets Rápidos */
    .presets-title {
      font-size: 11.5px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.8px;
      color: #a1a1aa;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .preset-btn-group {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 8px;
    }

    .preset-btn {
      background: #27272a;
      border: 1.5px solid #3f3f46;
      border-radius: 10px;
      padding: 9px 12px;
      color: #e4e4e7;
      font-size: 12px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 8px;
      transition: all 0.15s ease;
      font-family: inherit;
    }

    .preset-btn:hover {
      background: #38383e;
      border-color: #71717a;
      transform: translateY(-1px);
      color: #ffffff;
    }

    .preset-btn svg {
      flex-shrink: 0;
    }

    /* Galería de Miniaturas Subidas */
    .gallery-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 4px;
    }

    .gallery-counter {
      font-size: 12px;
      font-weight: 700;
      color: #e4e4e7;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .gallery-counter .badge-count {
      background: #3f3f46;
      border: 1px solid #52525b;
      color: #ffffff;
      padding: 2px 8px;
      border-radius: 99px;
      font-size: 11px;
    }

    .btn-clear-all {
      background: transparent;
      border: none;
      color: #f87171;
      font-size: 11.5px;
      font-weight: 600;
      cursor: pointer;
      padding: 2px 6px;
      border-radius: 4px;
      transition: background 0.15s ease;
    }

    .btn-clear-all:hover {
      background: rgba(248, 113, 113, 0.12);
      text-decoration: underline;
    }

    .thumbnail-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 8px;
      max-height: 140px;
      overflow-y: auto;
      padding: 4px;
      background: rgba(18, 18, 20, 0.6);
      border-radius: 10px;
      border: 1px solid #27272a;
    }

    .thumb-item {
      position: relative;
      aspect-ratio: 1;
      border-radius: 8px;
      overflow: hidden;
      background: #27272a;
      border: 1.5px solid #3f3f46;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 4px;
    }

    .thumb-item img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
    }

    .thumb-remove {
      position: absolute;
      top: 2px;
      right: 2px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: rgba(0, 0, 0, 0.75);
      color: #ffffff;
      border: none;
      font-size: 11px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      opacity: 0;
      transition: opacity 0.15s ease, background 0.15s ease;
    }

    .thumb-item:hover .thumb-remove {
      opacity: 1;
    }

    .thumb-remove:hover {
      background: #ef4444;
    }

    /* ========================================================
       AJUSTES DE ANIMACIÓN
       ======================================================== */
    .setting-row {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .setting-label-wrap {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .setting-label {
      font-size: 12.5px;
      font-weight: 700;
      color: #e4e4e7;
    }

    .setting-value {
      font-size: 11.5px;
      font-weight: 700;
      color: #e4e4e7;
      font-family: monospace;
    }

    /* Controles deslizantes sobrios */
    input[type="range"] {
      -webkit-appearance: none;
      width: 100%;
      height: 6px;
      border-radius: 4px;
      background: #323238;
      outline: none;
      transition: background 0.15s ease;
    }

    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #e4e4e7;
      cursor: pointer;
      border: 2px solid #27272a;
      box-shadow: 0 1px 4px rgba(0,0,0,0.4);
      transition: transform 0.15s ease;
    }

    input[type="range"]::-webkit-slider-thumb:hover {
      transform: scale(1.15);
      background: #ffffff;
    }

    /* Selectores de modo tipo Pills (3 Modos) */
    .pill-selector {
      display: flex;
      background: #202024;
      border-radius: 10px;
      padding: 3px;
      gap: 3px;
      border: 1px solid #27272a;
    }

    .pill-opt {
      flex: 1;
      text-align: center;
      padding: 8px 4px;
      border-radius: 8px;
      font-size: 11.5px;
      font-weight: 700;
      color: #a1a1aa;
      cursor: pointer;
      border: none;
      background: transparent;
      font-family: inherit;
      transition: all 0.15s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
    }

    .pill-opt:hover {
      color: #ffffff;
    }

    .pill-opt.active {
      background: #3f3f46;
      color: #ffffff;
      border: 1px solid #52525b;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    }

    /* ========================================================
       SECCIÓN DE LÍNEA DE VELOCIDAD / RITMO CON PUNTOS SVG
       ======================================================== */
    .setting-label-left {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .btn-curve-pencil {
      background: #202024;
      border: 1px solid #3f3f46;
      color: #a1a1aa;
      width: 22px;
      height: 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      padding: 0;
      transition: all 0.15s ease;
      position: relative;
    }

    .btn-curve-pencil:hover {
      background: #3f3f46;
      color: #ffffff;
      border-color: #71717a;
      transform: scale(1.08);
    }

    .btn-curve-pencil.active {
      background: #e4e4e7;
      color: #18181b;
      border-color: #ffffff;
    }

    .btn-curve-pencil.has-custom::after {
      content: '';
      position: absolute;
      top: -2px;
      right: -2px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #ef4444;
    }

    .curve-section {
      background: #18181b;
      border: 1.5px solid #3f3f46;
      border-radius: 12px;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      animation: modalFadeIn 0.15s ease-out;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
    }

    .curve-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .curve-header-left {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 11.5px;
      font-weight: 700;
      color: #e4e4e7;
    }

    .curve-header-actions {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .curve-reset-btn {
      background: #27272a;
      border: 1px solid #3f3f46;
      color: #a1a1aa;
      border-radius: 6px;
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .curve-reset-btn:hover {
      color: #ffffff;
      background: #3f3f46;
      border-color: #52525b;
      transform: rotate(-45deg);
    }

    .curve-reset-btn svg {
      width: 13px;
      height: 13px;
      fill: currentColor;
    }

    .curve-close-btn {
      background: #27272a;
      border: 1px solid #3f3f46;
      color: #a1a1aa;
      border-radius: 6px;
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .curve-close-btn:hover {
      color: #ef4444;
      background: rgba(239, 68, 68, 0.15);
      border-color: #ef4444;
    }

    .curve-canvas-wrapper {
      width: 100%;
      height: 80px;
      background: #141417;
      border: 1px solid #27272a;
      border-radius: 8px;
      position: relative;
      overflow: hidden;
      cursor: crosshair;
      touch-action: none;
    }

    .curve-svg {
      width: 100%;
      height: 100%;
      display: block;
    }

    .speed-reference-line {
      stroke: #52525b;
      opacity: 0.35;
      stroke-dasharray: 3,3;
    }

    .curve-handle {
      cursor: grab;
      transition: r 0.1s;
    }
    .curve-handle:hover {
      r: 7;
    }
    .curve-handle:active, .curve-handle.dragging {
      cursor: grabbing;
      r: 8.5;
    }

    .curve-hint-text {
      font-size: 10.5px;
      color: #71717a;
      line-height: 1.35;
      text-align: center;
    }

    /* Selectores dropdown */
    select.custom-select {
      background: #27272a;
      border: 1.5px solid #3f3f46;
      border-radius: 9px;
      color: #f3f4f6;
      padding: 8px 12px;
      font-size: 12.5px;
      font-weight: 600;
      outline: none;
      font-family: inherit;
      cursor: pointer;
    }

    /* Checkbox personalizado redondeado para sonido */
    .custom-checkbox-row {
      display: flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      user-select: none;
      padding: 3px 0;
    }

    .custom-checkbox-input {
      position: absolute;
      opacity: 0;
      width: 0;
      height: 0;
      pointer-events: none;
    }

    .custom-checkbox-box {
      width: 19px;
      height: 19px;
      border-radius: 6px;
      background: #202024;
      border: 1.5px solid #3f3f46;
      display: flex;
      align-items: center;
      justify-content: center;
      color: transparent;
      transition: all 0.15s ease;
      flex-shrink: 0;
    }

    .custom-checkbox-input:checked + .custom-checkbox-box {
      background: #3f3f46;
      border-color: #71717a;
      color: #ffffff;
    }

    .custom-checkbox-row:hover .custom-checkbox-box {
      border-color: #71717a;
    }

    .custom-checkbox-label {
      font-size: 12.5px;
      font-weight: 600;
      color: #d4d4d8;
    }

    /* Controles y botón de sonido customizado */
    .sound-control-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      margin-top: 2px;
    }

    .btn-upload-sound {
      background: transparent;
      border: none;
      color: #a1a1aa;
      font-size: 11.5px;
      font-weight: 600;
      padding: 4px 6px;
      border-radius: 6px;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 5px;
      transition: all 0.15s ease;
      font-family: inherit;
    }

    .btn-upload-sound:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.08);
      text-decoration: underline;
    }

    .btn-upload-sound svg {
      flex-shrink: 0;
    }

    .custom-sound-active-wrap {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(63, 63, 70, 0.45);
      border: 1px solid #52525b;
      padding: 3px 8px;
      border-radius: 6px;
      font-size: 11px;
      color: #f3f4f6;
      max-width: 170px;
    }

    .custom-sound-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 120px;
      font-weight: 500;
    }

    .btn-remove-sound {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid #52525b;
      color: #ffffff;
      cursor: pointer;
      font-size: 13px;
      line-height: 1;
      width: 19px;
      height: 19px;
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      transition: all 0.15s ease;
      flex-shrink: 0;
    }

    .btn-remove-sound:hover {
      background-color: rgba(255, 255, 255, 0.2);
      border-color: #ffffff;
      color: #ffffff;
    }

    /* Selectores de fondo Croma */
    .bg-selector-row {
      display: flex;
      gap: 8px;
      margin-top: 4px;
    }

    .bg-color-dot {
      flex: 1;
      height: 32px;
      border-radius: 8px;
      border: 2px solid transparent;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: 700;
      color: #ffffff;
      box-shadow: 0 2px 4px rgba(0,0,0,0.2);
      transition: all 0.15s ease;
    }

    .bg-color-dot:hover {
      transform: translateY(-2px);
    }

    .bg-color-dot.active {
      border-color: #ffffff;
      box-shadow: 0 0 0 2px #52525b;
    }

    .dot-green { background: #00ff00; color: #111111; }
    .dot-blue { background: #0033cc; }
    .dot-dark { background: #0f0f11; border-color: #3f3f46; }
    .dot-white { background: #f4f4f6; color: #111111; }
    .dot-transparent { 
      background-image: linear-gradient(45deg, #444 25%, transparent 25%), linear-gradient(-45deg, #444 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #444 75%), linear-gradient(-45deg, transparent 75%, #444 75%);
      background-size: 8px 8px;
      background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
      background-color: #222;
    }

    /* ========================================================
       FOOTER DEL PANEL (CONTROLES DE REPRODUCCIÓN)
       ======================================================== */
    .panel-footer {
      padding: 14px 20px 16px 20px;
      background: #18181b;
      border-top: 1.5px solid #27272a;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-btn-row {
      display: flex;
      gap: 8px;
    }

    .btn-main-play {
      flex: 1.4;
      background: #10b981;
      color: #ffffff;
      border: 1.5px solid #059669;
      border-radius: 10px;
      padding: 11px 14px;
      font-size: 13.5px;
      font-weight: 700;
      font-family: inherit;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      box-shadow: none;
      transition: all 0.15s ease;
    }

    .btn-main-play:hover {
      background: #059669;
      border-color: #047857;
    }

    .btn-main-play:active {
      background: #047857;
    }

    .btn-main-play.playing {
      background: #f59e0b;
      border-color: #d97706;
      box-shadow: none;
    }

    .btn-main-reset {
      flex: 1;
      background: #27272a;
      color: #f3f4f6;
      border: 1.5px solid #3f3f46;
      border-radius: 10px;
      padding: 11px 12px;
      font-size: 13px;
      font-weight: 700;
      font-family: inherit;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      box-shadow: none;
      transition: all 0.15s ease;
    }

    .btn-main-reset:hover {
      background: #3f3f46;
      border-color: #52525b;
    }

    .btn-main-reset:active {
      background: #202024;
    }

    .btn-key-badge {
      background: rgba(0, 0, 0, 0.28);
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 11px;
      font-family: monospace;
      font-weight: 700;
      margin-left: 3px;
      opacity: 0.85;
      line-height: 1;
    }

    .keyboard-badge {
      display: inline-block;
      padding: 2px 6px;
      font-family: monospace;
      font-size: 11px;
      font-weight: 700;
      line-height: 1.2;
      color: #f3f4f6;
      background-color: #27272a;
      border: 1px solid #3f3f46;
      border-radius: 5px;
      box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
      margin: 0 2px;
      vertical-align: middle;
    }

    /* Enlace de Salir al Menú (Texto limpio con icono) */
    .footer-sub-links {
      display: flex;
      justify-content: center;
      width: 100%;
      padding-top: 4px;
    }

    .exit-link {
      background: transparent;
      border: none;
      box-shadow: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 6px 12px;
      color: #a1a1aa;
      text-decoration: none;
      font-size: 12.5px;
      font-weight: 600;
      cursor: pointer;
      transition: color 0.15s ease;
    }

    .exit-link:hover {
      color: #ffffff;
    }

    .exit-link svg {
      width: 14px;
      height: 14px;
      stroke: currentColor;
    }

    @media (max-width: 600px) {
      .top-menu-btn {
        top: 10px;
        right: 12px;
      }
      .control-panel {
        top: 50px;
        right: 12px;
        left: 12px;
        width: auto;
        max-height: calc(100vh - 62px);
      }
    }

    /* ========================================================
       PESTAÑA DESCARGAR (EXPORTAR SECUENCIA PNG ZIP)
       ======================================================== */
    .export-preset-chips {
      display: flex;
      gap: 6px;
      margin-top: 8px;
    }

    .chip-btn {
      flex: 1;
      padding: 5px 0;
      background: #27272a;
      border: 1px solid #3f3f46;
      border-radius: 6px;
      color: #a1a1aa;
      font-size: 11px;
      font-weight: 600;
      font-family: inherit;
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .chip-btn:hover {
      color: #ffffff;
      background: #3f3f46;
    }

    .chip-btn.active {
      background: #3f3f46;
      color: #ffffff;
      border-color: #71717a;
    }

    .export-summary-card {
      background: #141416;
      border: 1px solid #27272a;
      border-radius: 10px;
      padding: 12px 14px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .export-summary-line {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    .summary-key {
      color: #a1a1aa;
    }

    .summary-val {
      color: #ffffff;
      font-weight: 700;
    }

    .btn-export-action {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      width: 100%;
      padding: 12px 16px;
      background: #27272a;
      border: 1.5px solid #3f3f46;
      border-radius: 10px;
      color: #ffffff;
      font-family: inherit;
      font-size: 13px;
      font-weight: 700;
      cursor: pointer;
      transition: all 0.18s ease;
      margin-top: 6px;
    }

    .btn-export-action:hover {
      background: #3f3f46;
      border-color: #71717a;
      transform: translateY(-1px);
    }

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

    .btn-export-action svg {
      flex-shrink: 0;
    }

    /* BANNER FLOTANTE DE PROGRESO DE EXPORTACIÓN */
    .export-banner {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      width: 440px;
      max-width: calc(100vw - 32px);
      transition: opacity 0.25s ease, transform 0.25s ease;
    }

    .export-banner.hidden {
      opacity: 0;
      pointer-events: none;
      transform: translate(-50%, -20px);
    }

    .export-banner-inner {
      background: #18181b;
      border: 1.5px solid #3f3f46;
      border-radius: 14px;
      padding: 14px 18px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.7);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .export-banner-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .export-banner-status {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .export-spinner {
      width: 18px;
      height: 18px;
      border: 2px solid #3f3f46;
      border-top-color: #ffffff;
      border-radius: 50%;
      animation: exportSpin 0.7s linear infinite;
      flex-shrink: 0;
    }

    .export-spinner.success {
      animation: none;
      border: none;
      width: 18px;
      height: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    @keyframes exportSpin {
      to { transform: rotate(360deg); }
    }

    .export-text-group {
      display: flex;
      flex-direction: column;
      gap: 2px;
      min-width: 0;
    }

    .export-banner-title {
      font-size: 13px;
      font-weight: 700;
      color: #ffffff;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .export-banner-sub {
      font-size: 11.5px;
      color: #a1a1aa;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .btn-export-cancel {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 5px 10px;
      background: #27272a;
      border: 1px solid #3f3f46;
      border-radius: 6px;
      color: #e4e4e7;
      font-size: 11.5px;
      font-weight: 600;
      font-family: inherit;
      cursor: pointer;
      transition: all 0.15s ease;
      flex-shrink: 0;
    }

    .btn-export-cancel:hover {
      background: #3f3f46;
      color: #ffffff;
    }

    .export-progress-track {
      width: 100%;
      height: 5px;
      background: #27272a;
      border-radius: 3px;
      overflow: hidden;
    }

    .export-progress-bar {
      height: 100%;
      background: #ffffff;
      border-radius: 3px;
      transition: width 0.08s linear;
    }