:root {
    --pink: #D2247C;
    --blue: #009BDD;
    --yellow: #E0D033;
    --dark-bg: rgba(10, 10, 15, 0.85);
    --border-color: rgba(255, 255, 255, 0.15);
    --neon-glow: rgba(0, 155, 221, 0.4);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Oxanium', system-ui, -apple-system, sans-serif;
}
html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000000;
}
#universo {
    display: block;
    width: 100%;
    height: 100%;
}

.companion-hud {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    width: 90%;
    max-width: 480px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    color: #ffffff;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.8), 0 0 20px var(--neon-glow);
    z-index: 1000;
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275), visibility 0.6s;
    opacity: 1;

    visibility: visible;
}
.companion-hud.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
    visibility: hidden;
    pointer-events: none;
}
.companion-hud.hidden-instant {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
    visibility: hidden;
    pointer-events: none;
    transition: none;
}
/* Glow bar at the top of the HUD card */
.hud-border-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--blue), var(--pink), var(--yellow));
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
}
/* Progress bar / step indicators */
.hud-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.hud-step-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: #8888aa;
}
.hud-dots {
    display: flex;
    gap: 6px;
}
.hud-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}
.hud-dot.active {
    background: var(--blue);
    box-shadow: 0 0 8px var(--blue);
    transform: scale(1.2);
}
.hud-dot.completed {
    background: var(--yellow);
    box-shadow: 0 0 6px var(--yellow);
}
/* HUD Content: Icon and Details */
.hud-content {
    display: flex;
    align-items: center;
    gap: 20px;
}
.hud-icon-container {
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}
.hud-details {
    flex-grow: 1;
}
.hud-action-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1.5px;
    margin-bottom: 4px;
    text-transform: uppercase;
    transition: color 0.3s ease;
}
.hud-action-desc {
    font-family: 'Oxanium', sans-serif;
    font-size: 12.5px;
    font-weight: 300;
    color: #b0b0cc;
    line-height: 1.4;
}
/* Animations for Vector SVG Icons */
.svg-mouse, .svg-key, .svg-check {
    display: block;
    overflow: visible;
}
/* Mouse clicking animation */
@keyframes mouseClick {
    0%, 100% { opacity: 0; }
    15%, 45% { opacity: 0.8; }
    50% { opacity: 0; }
}
.animate-click .click-left {
    animation: mouseClick 1.5s infinite;
}
/* Mouse double clicking animation */
@keyframes mouseDblClick {
    0%, 100% { opacity: 0; }
    10%, 30% { opacity: 0.8; }
    35%, 45% { opacity: 0; }
    55%, 75% { opacity: 0.8; }
    80% { opacity: 0; }
}
.animate-dblclick .click-left {
    animation: mouseDblClick 1.8s infinite;
}
/* Keyboard key pressing animation */
@keyframes keyPress {
    0%, 100% { opacity: 0; transform: translateY(0); }
    20%, 65% { opacity: 0.7; transform: translateY(1.5px); }
}
@keyframes keyBodyPress {
    0%, 100% { transform: translateY(0); }
    20%, 65% { transform: translateY(1.5px); }
}
.animate-space .key-press, .animate-enter .key-press {
    animation: keyPress 1.5s infinite;
}
.animate-space .key-body, .animate-enter .key-body {
    animation: keyBodyPress 1.5s infinite;
}
/* Checkmark drawing animation */
.check-circle {
    stroke-dasharray: 63;
    stroke-dashoffset: 63;
    animation: drawCircle 0.8s ease-out forwards;
}
.check-path {
    stroke-dasharray: 15;
    stroke-dashoffset: 15;
    animation: drawPath 0.5s 0.6s ease-out forwards;
}
@keyframes drawCircle {
    to { stroke-dashoffset: 0; }
}
@keyframes drawPath {
    to { stroke-dashoffset: 0; }
}
/* Reference HUD (Minimal floating card) */
.reference-hud {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(10, 10, 15, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 14px 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275), visibility 0.6s;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.reference-hud.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(10px);
}
.reference-hud.hidden-instant {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: none;
    transform: translateY(10px);
}
.ref-title {
    font-family: 'Oxanium', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: #8888aa;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 6px;
    margin-bottom: 4px;
}
.ref-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    font-family: 'Oxanium', sans-serif;
    font-size: 12px;
    transition: all 0.3s ease;
}
.ref-key {
    font-family: 'Oxanium', sans-serif;
    font-size: 9px;
    padding: 3px 6px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 4px;
    color: #e0e0ff;
    font-weight: 600;
    text-transform: uppercase;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}
.ref-label {
    color: #9a9ab0;
    font-weight: 300;
    transition: color 0.3s ease;
}
/* Active HUD feedback colors */
.ref-item.active-click .ref-key {
    background: rgba(210, 36, 124, 0.2);
    border-color: var(--pink);
    color: #ffffff;
    box-shadow: 0 0 8px rgba(210, 36, 124, 0.5);
}
.ref-item.active-click .ref-label {
    color: var(--pink);
    font-weight: 500;
}
/* Double click (Congelar) -> Yellow glow */
.ref-item.active-dblclick .ref-key {
    background: rgba(224, 208, 51, 0.2);
    border-color: var(--yellow);
    color: #ffffff;
    box-shadow: 0 0 8px rgba(224, 208, 51, 0.5);
}
.ref-item.active-dblclick .ref-label {
    color: var(--yellow);
    font-weight: 500;
}
/* Space (Escudo) -> Celeste/Blue glow */
.ref-item.active-space .ref-key {
    background: rgba(0, 155, 221, 0.2);
    border-color: var(--blue);
    color: #ffffff;
    box-shadow: 0 0 8px rgba(0, 155, 221, 0.5);
}
.ref-item.active-space .ref-label {
    color: var(--blue);
    font-weight: 500;
}
.ref-item.active-rotate .ref-key {
    background: rgba(255, 255, 255, 0.15);
    border-color: #ffffff;
    color: #ffffff;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}
.ref-item.active-rotate .ref-label {
    color: #ffffff;
    font-weight: 500;
}
/* Mobile responsive adjustments */
@media (max-width: 600px) {
    .companion-hud {
        width: calc(100% - 30px);
        bottom: 15px;
        padding: 15px;
    }
    
    .reference-hud {
        bottom: auto;
        top: 20px;
        right: 50%;
        transform: translateX(50%);
        flex-direction: row;
        width: calc(100% - 30px);
        justify-content: space-around;
        padding: 8px 10px;
    }
    .ref-title {
        display: none;
    }
}
/* Interactive Hotspots for Reference HUD in each corner */
.hud-hotspot {
    position: fixed;
    width: 80px;
    height: 80px;
    z-index: 99;
    background: transparent;
    cursor: help;
    border-radius: 6px;
}
/* Return to Menu Button style */
.btn-back {
    position: fixed;
    top: 25px;
    left: 25px; /* Shifted to top left to be consistent and clear */
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(10, 10, 15, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px 16px;
    color: #ffffff;
    text-decoration: none;
    font-family: 'Oxanium', sans-serif;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
}
.btn-back:hover {
    background: rgba(0, 155, 221, 0.2);
    border-color: var(--blue);
    box-shadow: 0 0 12px rgba(0, 155, 221, 0.4);
    transform: translateY(-1px);
}