body {
    height: 100vh;
    margin: 0;
    background-color: #000;
    box-sizing: border-box;
    display: grid;
    grid-template-rows: auto 1fr auto; 
    gap: 3px;
    
    /* Defines the glow color */
    --glow-r: 105;
    --glow-g: 240;
    --glow-b: 174;
	
	--active-glow-r: 255;
    --active-glow-g: 255;
    --active-glow-b: 255;
	
	--glow-opacity: 0.8;
	--glow-spread-multiplier: 1;
}

/* This rule preloads all necessary background images */
body::after {
    position: absolute; 
    width: 0; 
    height: 0; 
    overflow: hidden; 
    z-index: -1;
    content: 
        url('../assets/images/background1.jpg')
        url('../assets/images/background2.jpg')
        url('../assets/images/background3.jpg')
        url('../assets/images/background4.jpg')
        url('../assets/images/background5.jpg')
        url('../assets/images/PNG/Button03.png')
        url('../assets/images/PNG/Button04.png')
        url('../assets/images/logo.png')
        url('../assets/images/logo-header.png');
}

body.glow-disabled * {
    animation: none !important;
    box-shadow: none !important;
}

/* Universal font style */
* {
    font-family: 'Roboto Mono', monospace;
}

#mainContainer {
    display: flex;
    overflow: hidden;
    position: relative;
    gap: 3px;
}


/* --- Styly pro preloader --- */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 20px;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-in-out;
}

#preloader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    border: 8px solid #333;
    border-top: 8px solid #90EE90;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --- Tooltip styling --- */
.tooltip {
    position: fixed;            /* FIX: fixed prevents creating scrollbars */
    left: 0;
    top: 0;
    visibility: hidden;
    background-color: #111;
    color: #fff;
    border-radius: 6px;
    padding: 10px;
    z-index: 32768;             /* FIX: ensure tooltip sits above UI/panels */
    min-width: 280px;
    max-width: 380px;
    box-sizing: border-box;
    pointer-events: none;

    border: 1px solid rgba(var(--glow-r), var(--glow-g), var(--glow-b), 0.20);
    background: linear-gradient(180deg, rgba(18,18,18,0.98), rgba(10,10,10,0.92));
    box-shadow:
        0 4px 18px rgba(0,0,0,0.65),
        0 0 20px rgba(var(--glow-r), var(--glow-g), var(--glow-b), 0.08);
    transition: opacity 140ms ease, transform 140ms ease, box-shadow 200ms ease;
    transform-origin: top left;
    transform: translateY(-4px) scale(0.995);
    opacity: 0;
    will-change: transform, opacity, left, top;
}

/* subtle tweak so the blurred glow pseudo-element does not interact with layout */
.tooltip::before {
    content: '';
    position: absolute;
    top: -8px; left: -8px; right: -8px; bottom: -8px;
    border-radius: 10px;
    background: linear-gradient(90deg,
        rgba(var(--glow-r), var(--glow-g), var(--glow-b), 0.06),
        rgba(var(--active-glow-r), var(--active-glow-g), var(--active-glow-b), 0.04));
    filter: blur(10px);
    z-index: -1;
    pointer-events: none;
}

.tooltip.visible {
    visibility: visible;
    opacity: 1;
    transform: translateY(0) scale(1);
    animation: pulse-glow 5s ease-in-out infinite;
}

.tooltip h4 {
    margin: 0 0 4px 0;
    font-size: 1em;
    color: #90EE90;
}

.tooltip p {
    margin: 0 0 2px 0;
    font-size: 0.9em;
    line-height: 1.2;
}

.tooltip-description {
    font-style: italic;
    color: #ccc;
    margin-bottom: 8px !important;
}

.tooltip-section {
    border-top: 1px solid #444;
    padding-top: 5px;
    margin-top: 5px;
}
.tooltip-detail {
    margin-left: 10px;
    color: #ccc;
}
.tooltip hr {
    border-color: #444;
}

/* Tooltip reward and upgrade highlight styling */
.tooltip .reward-amount {
    color: #8FFFA0;               /* bright green for boosted amounts */
    font-weight: 700;
    text-shadow: 0 1px 0 rgba(0,0,0,0.6);
}

.tooltip .tooltip-bonuses {
    margin: 6px 0 0 18px;
    padding-left: 0;
    list-style: disc;
    list-style-position: inside;
}

.tooltip .tooltip-bonuses .bonus-item {
    color: #FFD36B;               /* warm accent for bonus labels */
    font-weight: 600;
    margin: 2px 0;
    font-size: 0.9em;
}

/* keep existing tooltip-detail style for legacy single-line notes */
.tooltip .tooltip-detail {
    color: #ccc;
    margin-left: 10px;
}

/* --- The UNIFIED Glow Animation --- */
@keyframes pulse-glow {
  0% {
    box-shadow: 0 0 calc(7px * var(--glow-spread-multiplier)) rgba(var(--glow-r), var(--glow-g), var(--glow-b), calc(var(--glow-opacity) * 0.7));
  }
  50% {
    box-shadow: 0 0 calc(15px * var(--glow-spread-multiplier)) rgba(var(--glow-r), var(--glow-g), var(--glow-b), var(--glow-opacity));
  }
  100% {
    box-shadow: 0 0 calc(7px * var(--glow-spread-multiplier)) rgba(var(--glow-r), var(--glow-g), var(--glow-b), calc(var(--glow-opacity) * 0.7));
  }
}

/* --- Vertical Glowing Separators --- */
#mainContainer::before,
#mainContainer::after {
    content: '';
    position: absolute;
    top: 0;
    height: 100%;
    width: 3px;
    animation: pulse-glow 5s ease-in-out infinite;
    z-index: 5;
}
#mainContainer::before {
    left: 20%;
}
#mainContainer::after {
    left: 80%;
}

#mainMenu, #gameArea, #infoPanel {
    position: relative; /* Ensures z-index will apply */
    z-index: 1;       /* Places them on layer 1 */
}