/* --- CORRECCIÓN FINAL BOTÓN FLOTANTE INICIO --- */
.btn-flotante-inicio.btn-flotante-izq {
  position: fixed !important;
  top: 1.2rem !important;
  left: 1rem !important;
  right: auto !important;
  bottom: auto !important;
  z-index: 99999 !important;
  opacity: 1 !important;
  visibility: visible !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 48px !important;
  height: 48px !important;
  background: linear-gradient(135deg, #2563eb 60%, #0ea5e9 100%) !important;
  border: 2.5px solid #fff !important;
  box-shadow: 0 2px 8px rgba(30,64,175,0.18) !important;
  border-radius: 50% !important;
  padding: 0.2em !important;
  transition: box-shadow 0.2s, border 0.2s, background 0.2s;
  text-decoration: none !important;
}
.btn-flotante-inicio.btn-flotante-izq svg {
  width: 28px !important;
  height: 28px !important;
  margin: 0 auto !important;
  display: block !important;
  color: #fff !important;
  stroke: #fff !important;
  stroke-width: 2.5 !important;
  background: none !important;
  transition: stroke 0.2s, color 0.2s;
}
.btn-flotante-inicio.btn-flotante-izq:hover {
  background: linear-gradient(135deg, #0ea5e9 60%, #2563eb 100%) !important;
  border-color: #109FFF !important;
  box-shadow: 0 8px 32px 0 #109FFF44, 0 2px 8px 0 #69A9FF22 !important;
}
.btn-flotante-inicio.btn-flotante-izq:hover svg {
  color: #16232f !important;
  stroke: #16232f !important;
}
/* Tooltip solo visible en hover/focus en desktop, oculto en móvil */
/* Tooltip a la derecha del botón flotante */
.btn-flotante-inicio .tooltip-flotante {
  visibility: hidden !important;
  opacity: 0 !important;
  position: absolute !important;
  left: 120% !important;
  top: 50% !important;
  transform: translateY(-50%) !important;
  background: #23263a !important;
  color: #fff !important;
  border-radius: 0.5em !important;
  padding: 0.35em 0.9em !important;
  font-size: 0.95rem !important;
  font-family: 'Montserrat', sans-serif !important;
  box-shadow: 0 2px 8px 0 #23263a33 !important;
  pointer-events: none !important;
  white-space: nowrap !important;
  transition: opacity 0.2s, visibility 0.2s !important;
  min-width: 110px !important;
  text-align: left !important;
}
@media (hover: hover) and (pointer: fine) {
  .btn-flotante-inicio:hover .tooltip-flotante,
  .btn-flotante-inicio:focus .tooltip-flotante {
    visibility: visible !important;
    opacity: 1 !important;
  }
}
/* --- UNIFICACIÓN ESTILO BOTÓN FLOTANTE INICIO --- */
.btn-flotante-inicio.btn-flotante-izq {
  position: fixed !important;
  top: 1.2rem !important;
  left: 1rem !important;
  right: auto !important;
  bottom: auto !important;
  z-index: 99999 !important;
  opacity: 1 !important;
  visibility: visible !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 44px !important;
  height: 44px !important;
  background: linear-gradient(135deg, #109FFF 60%, #64C1FF 100%) !important;
  border: 2.5px solid #fff !important;
  box-shadow: 0 2px 10px #109fff33 !important;
  border-radius: 50% !important;
  padding: 0.2em !important;
  transition: box-shadow 0.18s, border 0.18s, background 0.18s;
}
.btn-flotante-inicio.btn-flotante-izq svg {
  width: 28px !important;
  height: 28px !important;
  margin: 0 auto !important;
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
  color: #fff !important;
  stroke: #fff !important;
  stroke-width: 2.5 !important;
  background: none !important;
  transition: stroke 0.18s, color 0.18s;
}
.btn-flotante-inicio.btn-flotante-izq:hover {
  background: linear-gradient(135deg, #64C1FF 60%, #109FFF 100%) !important;
  border-color: #109FFF !important;
  box-shadow: 0 4px 18px #109fff55 !important;
}
.btn-flotante-inicio.btn-flotante-izq:hover svg {
  color: #16232f !important;
  stroke: #16232f !important;
}
/* --- FIN UNIFICACIÓN ESTILO BOTÓN FLOTANTE INICIO --- */
/* Refuerzo para botón flotante: siempre arriba a la izquierda y visible */
.btn-flotante-inicio.btn-flotante-izq {
  position: fixed !important;
  top: 1.2rem !important;
  left: 1rem !important;
  right: auto !important;
  bottom: auto !important;
  z-index: 99999 !important;
  opacity: 1 !important;
  visibility: visible !important;
  display: flex !important;
}
/* --- Estilos extraídos de Espectro.html --- */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #0A192F;
    color: #CBD2D9;
    min-height: 100vh;
    padding: 2rem 1rem;
    overflow-x: hidden;
    line-height: 1.3;
}
#slider-container {
    position: relative;
    height: 95.5px;
}
input[type="range"] {
    appearance: none;
    -webkit-appearance: none;
    width: 100%;
    height: 16px;
    background: transparent;
    border-radius: 6px;
    outline: none;
    cursor: pointer;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 20;
    pointer-events: auto;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 30px;
    background: #fff;
    border: 2px solid #9ca3af;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease-in-out;
    position: relative;
}
input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}
#slider-tooltip {
    position: absolute;
    top: -30px;
    background-color: #333;
    color: #fff;
    padding: 4px 8px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
    pointer-events: none;
    transform: translateX(-50%);
    z-index: 30;
}
#slider-container:hover #slider-tooltip {
    opacity: 1;
}
#indicator-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #3b82f6;
    z-index: 10;
    pointer-events: none;
    transition: left 0.1s linear;
}
.marker {
    cursor: pointer;
    pointer-events: auto;
    position: relative;
}
.marker:hover .tooltip {
    opacity: 1;
}
.tooltip {
    position: absolute;
    background-color: #333;
    color: #fff;
    padding: 4px 8px;-radius: 4px;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
    pointer-events: none;
}
.wavelength-comparison-container {
    position: relative;
    height: 600px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 2rem;
    gap: 4rem;
}
.human-silhouette {
    height: 240px;
    width: 350px;
    color: #a0aec0;
    position: relative;
    transition: width 0.3s ease-in-out;
}
.wavelength-visualizer {
    background-color: #3b82f6;
    height: 5px;
    transition: width 0.3s ease-in-out, background-color 0.3s ease-in-out;
}
.range-marker {
    position: absolute;
    top: 0;
    height: 100%;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    z-index: 12;
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: none;
}
.range-marker-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: #111;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    pointer-events: none;
    white-space: nowrap;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    height: 60px;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.range-marker:hover {
    background: transparent !important;
    z-index: 20;
}

/* --- Estilos visuales de conversiones_unidades.html --- */
.container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    background: none !important;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
}
.card {
    background: rgba(16, 35, 47, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 2.5rem;
    border: 1px solid rgba(75, 135, 177, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out;
    max-width: 100%;
}
.title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, #109FFF, #64C1FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    text-align: center;
    text-shadow: 0 4px 20px rgba(16, 159, 255, 0.3);
}
.instructivo {
    text-align: center;
    margin-bottom: 2.5rem;
    font-size: 1.2rem;
    color: #CBD2D9;
    font-weight: 400;
    letter-spacing: 0.5px;
    line-height: 1.3;
    background: none;
    border-radius: 0;
    padding: 0;
}
/* Agrandar botones de zoom y ver todo el espectro un 30% */
#zoom1, #zoom2, #zoom-reset {
    font-size: 1.3rem;
    padding: 1.3rem 2.6rem;
}
.btn-celeste {
    background: linear-gradient(135deg, #109FFF 60%, #64C1FF 100%);
    color: #fff;
    border: none;
    border-radius: 1.5em;
    box-shadow: 0 2px 8px rgba(16,159,255,0.12);
    padding: 1.3rem 2.6rem;
    font-size: 1.3rem;
    font-weight: 600;
    transition: box-shadow 0.2s, background 0.2s;
    outline: none;
    cursor: pointer;
    margin: 0 0.5rem 1.2rem 0.5rem;
    display: inline-block;
}
.btn-celeste:hover {
    background: linear-gradient(135deg, #64C1FF 60%, #109FFF 100%);
    box-shadow: 0 8px 32px 0 #109FFF44, 0 2px 8px 0 #69A9FF22;
    transform: scale(1.08);
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@media (max-width: 900px) {
  .wavelength-comparison-container {
    gap: 2rem !important;
    height: auto !important;
    min-height: 0 !important;
  }
  .human-silhouette {
    width: 32vw !important;
    max-width: 120px !important;
    height: auto !important;
  }
  .wavelength-visualizer {
    min-width: 30vw !important;
    max-width: 60vw !important;
    height: 3px !important;
  }
}
@media (max-width: 600px) {
  body, .container, .card, .title, .instructivo, .instructivo p, .card p, .card label, .card .title, .result-box, .range-marker-label {
    line-height: 1.25 !important;
    margin-top: 0.3em !important;
    margin-bottom: 0.3em !important;
    letter-spacing: 0.01em !important;
  }
  .title {
    line-height: 1.1 !important;
    margin-bottom: 0.5em !important;
  }
  .instructivo {
    line-height: 1.3 !important;
    margin-bottom: 0.7em !important;
  }
  .card p, .card label {
    line-height: 1.25 !important;
    margin-bottom: 0.3em !important;
  }
  .result-box {
    line-height: 1.2 !important;
    margin-top: 0.4em !important;
    margin-bottom: 0.4em !important;
  }
  .range-marker-label {
    line-height: 1.1 !important;
    margin: 0.1em 0 !important;
  }
  .card {
    padding: 1.1rem !important;
    border-radius: 14px !important;
    font-size: 1.05rem !important;
    max-width: 100% !important;
  }
  .title {
    font-size: 1.6rem !important;
    margin-bottom: 0.7rem !important;
  }
  .instructivo {
    font-size: 1rem !important;
    margin-bottom: 1.2rem !important;
  }
  .btn-celeste {
    font-size: 0.95rem !important;
    padding: 0.7rem 0.5rem !important;
    border-radius: 0.8em !important;
    width: 100% !important;
    margin: 0 0 0.7rem 0 !important;
    display: block !important;
    box-sizing: border-box !important;
  }
  .human-silhouette,
  #wavelength-scale-label {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    width: 0 !important;
    min-width: 0 !important;
    min-height: 0 !important;
    max-width: 0 !important;
    max-height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: hidden !important;
  }
  .wavelength-comparison-container {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 0.5rem !important;
    height: auto !important;
    min-height: 0 !important;
    margin-top: 0.5rem !important;
    padding: 0 !important;
  }
  .wavelength-visualizer,
  #wavelength-dot-left,
  #wavelength-dot-right {
    display: block !important;
    visibility: visible !important;
    width: 60vw !important;
    min-width: 40vw !important;
    max-width: 90vw !important;
    height: 4px !important;
    margin: 0 auto !important;
    background: #3b82f6 !important;
    border-radius: 2px !important;
    position: relative !important;
  }
  #wavelength-dot-left,
  #wavelength-dot-right {
    width: 10px !important;
    height: 10px !important;
    background: #3b82f6 !important;
    border-radius: 50% !important;
    position: absolute !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
  }
  #wavelength-dot-left {
    left: 0 !important;
  }
  #wavelength-dot-right {
    right: 0 !important;
  }
  .instructivo,
  .instructivo p,
  .card p,
  .card label,
  .range-marker-label {
    font-size: 0.92rem !important;
  }
  .instructivo a {
    background: #109FFF !important;
    color: #fff !important;
    font-weight: 700 !important;
    font-size: 1.02rem !important;
    border-radius: 1.2em !important;
    box-shadow: 0 2px 10px #109fff33 !important;
    padding: 0.32em 1.1em !important;
    margin: 0.7em auto 0.2em auto !important;
    display: block !important;
    text-align: center !important;
    letter-spacing: 0.02em !important;
    text-shadow: 0 1px 8px #109fff44 !important;
    transition: background 0.18s, box-shadow 0.18s, color 0.18s;
    border: none !important;
  }
  .instructivo a:hover {
    background: #64C1FF !important;
    color: #0A192F !important;
    box-shadow: 0 4px 18px #64c1ff44 !important;
    text-shadow: none !important;
  }
  /* --- BOTÓN FLOTANTE INICIO --- */
  .btn-flotante-inicio {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    position: fixed !important;
    top: 1.2rem !important;
    left: 1rem !important;
    z-index: 99999 !important;
    background: #16232f !important;
    border: 2px solid #109FFF !important;
    box-shadow: 0 2px 10px #109fff33 !important;
    border-radius: 50% !important;
    width: 44px !important;
    height: 44px !important;
    padding: 0.2em !important;
    opacity: 1 !important;
    visibility: visible !important;
    transition: box-shadow 0.18s, border 0.18s, background 0.18s;
  }
  .btn-flotante-inicio svg {
    width: 28px !important;
    height: 28px !important;
    margin: 0 auto !important;
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    color: #fff !important;
    stroke: #fff !important;
    stroke-width: 2.5 !important;
    background: none !important;
    transition: stroke 0.18s, color 0.18s;
  }
  .btn-flotante-inicio:hover {
    background: #109FFF !important;
    border-color: #64C1FF !important;
    box-shadow: 0 4px 18px #109fff55 !important;
  }
  .btn-flotante-inicio:hover svg {
    color: #16232f !important;
    stroke: #16232f !important;
  }
  /* --- FIN BOTÓN FLOTANTE INICIO --- */
}