/* Estilos generales y variables */
:root {
    --bg-color: #050505;
    --text-color: #ffffff;
    --accent-color: #4a4a4a;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    overflow: hidden;
    color: var(--text-color);
}

/* Contenedor de las pantallas para transiciones suaves */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 1s ease-in-out, visibility 1s;
}

/* Pantalla de inicio */
#intro-screen {
    z-index: 10;
    flex-direction: column;
}

/* Botón minimalista */
.minimal-btn {
    background: transparent;
    color: var(--text-color);
    border: 1px solid var(--accent-color);
    padding: 15px 40px;
    font-size: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.4s ease;
    outline: none;
    border-radius: 2px;
}

.minimal-btn:hover {
    background: var(--text-color);
    color: var(--bg-color);
    border-color: var(--text-color);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

/* Pantalla de la experiencia 3D */
#app-screen {
    opacity: 0;
    visibility: hidden;
    z-index: 5;
    flex-direction: column;
}

/* Contenedor del Canvas de Three.js */
#canvas-container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

/* Leyenda de los huesos (Interfaz superpuesta) */
#ui-layer {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 90%;
    pointer-events: none;
}

.bone-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    background: rgba(0, 0, 0, 0.6);
    padding: 6px 12px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.1);
}

.color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

/* Título sutil en la experiencia */
.app-title {
    position: absolute;
    top: 30px;
    left: 30px;
    z-index: 2;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 0.5;
    pointer-events: none;
}

/* Estado oculto */
.hidden {
    opacity: 0 !important;
    visibility: hidden !important;
}