:root {
    --color-bg: #000000;
    --color-text: #ffffff;
    --color-text-dim: #888888;
    --font-primary: 'Helvetica Neue', Arial, sans-serif;
    /* Idealmente una fuente más bruta como Inter o Monument Extended */
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-primary);
    overflow-x: hidden;
    font-size: 14px;
    /* Pequeño com pediste */
}

/* ThreeJS Container */
#experience-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    /* Dejar pasar clicks a elementos debajo si fuera necesario, pero UI está encima */
}

/* UI Overlay */
#ui-overlay {
    position: relative;
    z-index: 10;
    min-height: 200vh;
    /* Para permitir scroll */
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 100;
    animation: fadeOut 1s ease-in-out 0.5s forwards;
    pointer-events: none;
}

@keyframes fadeOut {
    to {
        opacity: 0;
    }
}

/* Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    mix-blend-mode: difference;
}

#main-logo {
    height: 40px;
    /* Ajustar según logo real */
    opacity: 0.9;
}

.lang-selector {
    display: flex;
    gap: 0.5rem;
    font-size: 0.75rem;
    /* Muy pequeño */
    letter-spacing: 1px;
    font-weight: bold;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-text-dim);
    cursor: pointer;
    text-transform: uppercase;
    transition: color 0.3s;
}

.lang-btn.active,
.lang-btn:hover {
    color: var(--color-text);
}

/* Hero Content (Lado Derecho) */
.hero-content {
    position: fixed;
    top: 50%;
    right: 15%;
    /* Desplazado a la derecha */
    transform: translateY(-50%);
    text-align: left;
    opacity: 0;
    transition: opacity 1s ease, transform 1s ease;
    pointer-events: none;
    /* Desactivado cuando invisible */
    max-width: 400px;
}

.hero-content.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(-50%) translateX(0);
}

.hero-content.hidden {
    transform: translateY(-40%);
    /* Ligero movimiento vertical al aparecer */
}

.hero-title {
    font-size: 4rem;
    text-transform: uppercase;
    line-height: 0.9;
    margin-bottom: 1rem;
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 0.8rem;
    letter-spacing: 4px;
    /* Tracking amplio */
    color: var(--color-text-dim);
    margin-bottom: 3rem;
}

/* Botones */
.cta-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

button[class^="btn-"] {
    padding: 1rem 2rem;
    border: 1px solid var(--color-text);
    background: transparent;
    color: var(--color-text);
    font-size: 0.7rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
}

.btn-primary:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-secondary {
    border-color: var(--color-text-dim);
    color: var(--color-text-dim);
}

.btn-secondary:hover {
    border-color: var(--color-text);
    color: var(--color-text);
}

/* Opciones 1, 2, 3 */
.options-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.option-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.option-card:hover {
    opacity: 1;
}

.opt-number {
    font-size: 0.7rem;
    color: var(--color-text-dim);
}

.opt-title {
    font-size: 1rem;
    font-weight: normal;
    letter-spacing: 1px;
}

/* Scroll Trigger Invisble */
.content-scroll-trigger {
    height: 200vh;
    /* Altura suficiente para scrollear */
    width: 1px;
}