@keyframes scroll-background {
    0% { background-position: 0 0; }
    100% { background-position: 512px 512px; }
}

@keyframes scroll-background-diagonal {
    0% { background-position: 0 0; }
    100% { background-position: 512px -512px; }
}

@keyframes rainbow {
    100%, 0% { color: rgb(255,0,0); }
    8% { color: rgb(255,127,0); }
    16% { color: rgb(255,255,0); }
    25% { color: rgb(127,255,0); }
    33% { color: rgb(0,255,0); }
    41% { color: rgb(0,255,127); }
    50% { color: rgb(0,255,255); }
    58% { color: rgb(0,127,255); }
    66% { color: rgb(0,0,255); }
    75% { color: rgb(127,0,255); }
    83% { color: rgb(255,0,255); }
    91% { color: rgb(255,0,127); }
}

@keyframes wavy {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes nullified-shake {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1px, -2px); }
  20% { transform: translate(1px, 2px); }
  30% { transform: translate(2px, -1px); }
  40% { transform: translate(-2px, 1px); }
  50% { transform: translate(1px, -2px); }
  60% { transform: translate(-1px, 1px); }
  70% { transform: translate(2px, 2px); }
  80% { transform: translate(-2px, -2px); }
  90% { transform: translate(1px, -1px); }
}

@keyframes nullified-glow {
    0%, 100% {
        color: #ff4d4d; /* Lighter red */
        text-shadow: 0 0 7px #ff00ff, 0 0 12px #ff00ff, 0 0 20px #ff00ff;
    }
    50% {
        color: #b30000; /* Darker red */
        text-shadow: 0 0 4px #d900d9, 0 0 8px #d900d9, 0 0 12px #d900d9;
    }
}

body {
    background-color: #4a4a4a;
    background-image: url("/Winning Smile.webp");
    background-size: 256px 256px;
    animation: scroll-background 20s linear infinite;
    color: white;
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 5rem 0;
    box-sizing: border-box;
    overflow: hidden; /* Prevent confetti from causing scrollbars */
    transition: background-color 0.5s ease; /* Smooth color transitions */
}

body.bg-filter-teal {
    filter: sepia(1) saturate(5) hue-rotate(140deg);
}
body.bg-filter-blue {
    filter: sepia(1) saturate(7) hue-rotate(190deg);
}
body.bg-filter-orange {
     filter: sepia(1) saturate(10) hue-rotate(345deg);
}

#save-indicator {
    position: fixed;
    top: -100px; /* Start off-screen */
    left: 50%;
    transform: translateX(-50%);
    background-color: #28a745;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    z-index: 1000;
    opacity: 0;
    transition: top 0.5s ease-out, opacity 0.5s ease-out;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

#save-indicator.visible {
    top: 20px;
    opacity: 1;
}

#settings-button {
    position: fixed;
    top: 1rem;
    left: 1rem;
    width: 50px;
    height: 50px;
    background-color: rgba(20, 20, 20, 0.85);
    color: #e0e0e0;
    border: 1px solid #444;
    border-radius: 8px;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
    transition: background-color 0.3s, box-shadow 0.3s;
}

#save-button {
    position: fixed;
    top: 1rem;
    left: calc(1rem + 60px); /* Position next to settings button */
    width: 50px;
    height: 50px;
    background-color: rgba(20, 20, 20, 0.85);
    color: #e0e0e0;
    border: 1px solid #444;
    border-radius: 8px;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
    transition: background-color 0.3s, box-shadow 0.3s;
}

#save-button:hover {
    background-color: rgba(40, 40, 40, 0.95);
}

.shadows-enabled #save-button {
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

#settings-button:hover {
    background-color: rgba(40, 40, 40, 0.95);
}

.shadows-enabled #settings-button {
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

#settings-modal .modal-content {
    background-color: #383838;
    margin: 10% auto;
    padding: 20px 30px;
    border: 2px solid #555;
    width: 80%;
    max-width: 500px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    color: white;
}

#settings-content h2 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.settings-section {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.settings-section label {
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
    color: #e0e0e0;
}

.settings-section div {
    display: flex;
    align-items: center;
}

.settings-section h3 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid #666;
    padding-bottom: 0.5rem;
}

.settings-section .danger-button {
    background-color: #c00;
    color: white;
    border: 1px solid #800;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.settings-section .danger-button:hover {
    background-color: #e00;
}

#shadows-toggle {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

#volume-slider {
    width: 100%;
    cursor: pointer;
}

#notation-select {
    padding: 0.5rem;
    font-size: 1rem;
    border-radius: 5px;
    border: 1px solid #666;
    background-color: #555;
    color: white;
    cursor: pointer;
}

#color-options {
    display: flex;
    gap: 10px;
}

.color-option {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #fff;
    cursor: pointer;
    transition: transform 0.2s;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.selected {
    border-color: #0080FF;
    box-shadow: 0 0 10px #0080FF;
}

#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    background-color: rgba(0,0,0,0.4);
}

#version-display {
    color: #B0B0B0;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#nullified-version-text {
    font-weight: bold;
    font-family: 'Courier New', monospace;
}

#null-points-display {
    color: #DDA0DD; /* Light purple */
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
    min-height: 1.5rem; /* Reserve space so layout doesn't jump */
}

#level-display {
    color: #00F000;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

#rate-display {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #e0e0e0;
    text-align: center;
    line-height: 1.4;
}

#panel {
    background-color: #4a4a4a;
    border: 5px solid #0080FF;
    padding: 3rem 5rem;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 128, 255, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 80%;
    max-width: 800px;
    margin-bottom: 2rem;
    transition: box-shadow 0.3s;
}

.shadows-enabled #panel {
    box-shadow: 0 0 25px rgba(0, 128, 255, 0.7), 0 5px 15px rgba(0,0,0,0.4);
}

#number-display {
    font-size: 6rem;
    font-weight: bold;
    transition: text-shadow 0.3s;
    word-break: break-all;
    line-height: 1.1;
    text-align: center;
}

.shadows-enabled #number-display {
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.5), 2px 2px 5px rgba(0,0,0,0.5);
}

#progress-section {
    width: 80%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2rem;
}

#progress-label {
    margin: 0 0 0.5rem 0;
    color: #e0e0e0;
    font-size: 1.2rem;
}

#progress-container {
    position: relative;
    width: 100%;
    background-color: #333;
    border-radius: 10px;
    margin-top: 0;
    height: 30px;
    border: 2px solid #666;
    overflow: hidden;
    transition: box-shadow 0.3s;
}

#progress-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
    z-index: 1;
}

.shadows-enabled #progress-container {
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

#progress-bar {
    width: 0%;
    height: 100%;
    background-color: #0080FF;
    border-radius: 8px; /* Slightly smaller than container for a nice fit */
    transition: width 0.1s linear;
}

#milestone-info {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 0.5rem;
    font-size: 1rem;
    color: #e0e0e0;
    padding: 0 5px;
}

#shop-button {
    background-color: #FFFFFF;
    color: #4a4a4a;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
    font-weight: bold;
    position: absolute;
    bottom: 10rem; /* Positioned higher */
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    width: 200px;
}

.shadows-enabled #shop-button {
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

#shop-button:hover {
    background-color: #e0e0e0;
}

#achievements-button, #levels-button, #shop-button {
    z-index: 2; /* Ensure they are interactable but below some modals */
}

#achievements-button {
    background-color: #ffd700; /* Gold color */
    color: #4a4a4a;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
    font-weight: bold;
    position: absolute;
    bottom: 6rem; /* Positioned between shop and levels */
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    width: 200px;
}

.shadows-enabled #achievements-button {
     box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

#achievements-button:hover {
    background-color: #f0c400;
}

#levels-button {
    background-color: #FFFFFF;
    color: #4a4a4a;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
    font-weight: bold;
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    width: 200px;
}

.shadows-enabled #levels-button {
     box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

#levels-button:hover {
    background-color: #e0e0e0;
}

#nullify-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 150px;
    height: 150px;
    background-image: url("/Minecraft_missing_texture_block.png");
    background-size: cover;
    border: 5px solid #4d004d;
    border-radius: 15px;
    cursor: pointer;
    z-index: 2;
    transition: transform 0.2s, box-shadow 0.3s;
    font-family: 'Courier New', Courier, monospace;
}

.shadows-enabled #nullify-button {
    box-shadow: 0 0 20px #800080, 0 4px 12px rgba(0,0,0,0.4);
}

#nullify-button.hidden {
    display: none;
}

#nullify-button:hover {
    transform: scale(1.05);
}

#nullify-button span {
    color: #800080;
    font-size: 2rem;
    font-weight: bold;
    text-shadow: 2px 2px 0 #000, -2px -2px 0 #000, 2px -2px 0 #000, -2px 2px 0 #000, 3px 3px 5px rgba(0,0,0,0.7);
}

#null-shop-button {
    /* Removed */
}

.modal {
    display: none; 
    position: fixed; 
    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
    transition: background-image 0.5s ease;
}

.modal.fullscreen {
    background-color: #ffffff;
    background-image: url("/Winning Smile.webp");
    background-size: 256px 256px;
    animation: scroll-background 20s linear infinite;
    color: #4a4a4a;
    z-index: 3; /* Above other modals */
}

.modal.fullscreen.null-shop-active {
    background-image: url("/Minecraft_missing_texture_block.png");
    background-size: 128px 128px;
    animation: scroll-background-diagonal 10s linear infinite;
    color: white;
}

#shop-content {
    padding: 20px;
    align-items: center;
    text-align: center;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    box-sizing: border-box;
}

#shop-title {
    font-size: 3rem;
    color: #444;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    margin-bottom: 2rem;
    transition: color 0.3s, text-shadow 0.3s;
}

.null-shop-active #shop-title {
    color: white;
    text-shadow: 2px 2px 5px #000;
}

#shop-items {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding-top: 2rem;
    justify-content: center;
}

#null-shop-items {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding-top: 2rem;
    justify-content: center;
}

#null-upgrades-items {
    display: grid;
    grid-template-areas:
        "nA1 nA2 nA3 nA4 nA5"
        "nB1 . . . .";
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    padding: 10px;
    width: 100%;
    max-width: 1150px; /* Increased to fit 5 items */
    justify-items: center;
}

#starting-simple-button { grid-area: nA1; }
#skipping-button { grid-area: nA2; }
#self-boosting-2-button { grid-area: nA3; }
#expansions-button { grid-area: nA4; }
#cost-nerf-button { grid-area: nA5; }
#np-gain-boost-button { grid-area: nB1; }

.hidden {
    display: none !important;
}

#back-to-shop-button {
    background-color: #606060;
    color: white;
    border: 2px solid #555;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 2rem;
}

#back-to-shop-button:hover {
    background-color: #707070;
}

.shop-item {
    background-color: #808080;
    color: white;
    border: 3px solid #666;
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 200px;
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
    position: relative;
}

.shadows-enabled .shop-item {
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.shop-item:hover {
    background-color: #707070;
    border-color: #555;
}

.shop-item.locked {
    cursor: not-allowed;
    filter: grayscale(50%);
}

.shop-item.locked::after {
    content: '🔒 Locked';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: inherit; /* Match the parent's border-radius */
    backdrop-filter: blur(1px);
}

.shop-item.maxed-out {
    background-color: #505050;
    cursor: not-allowed;
    border-color: #444;
}

.shop-item.maxed-out:hover {
    background-color: #505050;
    border-color: #444;
}

.shop-item span {
    display: block;
}

.shop-item-label {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #0080FF;
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
}

.shop-item-title {
    font-size: 1.4rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.shop-item-level {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: #e0e0e0;
}

.shop-item-effect {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.shop-item-cost {
    font-size: 1.2rem;
    font-weight: bold;
    background-color: #606060;
    padding: 0.5rem;
    border-radius: 5px;
    width: 100%;
    box-sizing: border-box;
}

#welcome-modal-content {
    background-color: #900000;
    border-color: #ff3333;
    box-shadow: 0 0 20px rgba(255, 51, 51, 0.5);
}

#welcome-modal-content p {
    font-size: 1.2rem;
    text-align: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

#broke-modal {
    background-color: #400000;
    border-color: #ff3333;
    box-shadow: 0 0 20px rgba(255, 51, 51, 0.5);
    text-align: center;
}

#broke-modal p {
    font-size: 1.5rem;
    font-weight: bold;
    padding: 1rem;
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    transition: color 0.2s;
}

.close-button.top-right {
    position: absolute;
    top: 15px;
    right: 25px;
    font-size: 2.5rem;
    z-index: 10;
    color: #666; /* Default color for light background */
    float: none; /* Override the default float */
}

.null-shop-active .close-button.top-right {
    color: #aaa; /* Color for dark background */
}

.null-shop-active .close-button.top-right:hover,
.null-shop-active .close-button.top-right:focus {
    color: #fff;
}

.close-button:hover,
.close-button:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

#settings-modal .close-button:hover,
#settings-modal .close-button:focus,
#levels-modal .close-button:hover,
#levels-modal .close-button:focus,
#nullify-modal .close-button:hover,
#nullify-modal .close-button:focus,
#welcome-modal .close-button:hover,
#welcome-modal .close-button:focus,
#update-log-modal .close-button:hover,
#update-log-modal .close-button:focus {
    color: white;
}

#levels-list {
    list-style-type: none;
    padding: 0;
}

#levels-list li {
    font-size: 1.2rem;
    padding: 0.5rem 0;
    color: #cccccc;
    opacity: 0.5;
    transition: all 0.3s;
}

#levels-list li.reached {
    color: #ffffff;
    opacity: 1;
}

#levels-list li.reached::before {
    content: '✓ ';
    color: #00ff00;
}

#nullify-modal .modal-content {
    margin: 15% auto;
    width: 90%;
    max-width: 500px;
    padding: 0;
    border: 5px solid #4d004d;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(128, 0, 128, 0.6);
    background-color: #1a001a;
    background-image: url("/Minecraft_missing_texture_block.png");
    background-size: 128px 128px;
    animation: scroll-background-diagonal 10s linear infinite;
    overflow: hidden;
}

#nullify-content {
    padding: 20px 30px;
    text-align: center;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(2px);
    color: white;
}

#nullify-content h2 {
    font-family: 'Courier New', Courier, monospace;
    font-size: 2.5rem;
    color: #800080;
    margin-top: 0;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 5px #000;
}

#nullify-panel p {
    font-size: 1.1rem;
    line-height: 1.5;
    margin: 0.5rem 0;
}

#null-points-gain-display {
    font-size: 2rem;
    font-weight: bold;
    color: #DDA0DD;
    margin: 1rem 0;
    text-shadow: 0 0 10px #DDA0DD;
}

#countdown-timer-container {
    margin: 1.5rem 0;
    background-color: rgba(0,0,0,0.2);
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid #444;
    transition: background-color 0.3s, border-color 0.3s;
}

.null-shop-active #countdown-timer-container {
    background-color: rgba(0,0,0,0.6);
    border-color: #800080;
}

#countdown-timer-container p {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    color: #ccc;
    transition: color 0.3s;
}

.null-shop-active #countdown-timer-container p {
    color: #e0e0e0;
}

#countdown-timer {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.5rem;
    color: #eee;
    background-color: rgba(0,0,0,0.5);
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #4d004d;
    min-height: 2rem; /* Add min-height to prevent layout shift */
}

#nullify-upgrades {
    display: none; /* No longer used here */
}

.nullify-upgrade-item {
    background-color: #4a004a;
    color: white;
    border: 3px solid #800080;
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 200px;
    transition: background-color 0.3s, border-color 0.3s;
    position: relative;
}

.nullify-upgrade-item:hover:not(:disabled) {
    background-color: #6a006a;
    border-color: #a000a0;
}

.nullify-upgrade-item.locked {
    background-color: #2e002e;
    border-color: #4d004d;
    cursor: not-allowed;
    filter: grayscale(80%);
}

#nullify-confirm-button {
    background-color: #800080;
    color: white;
    border: 2px solid #4d004d;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    margin-top: 1rem;
}

#nullify-confirm-button:hover:not(:disabled) {
    background-color: #a000a0;
    transform: scale(1.05);
}

#nullify-confirm-button:disabled {
    background-color: #440044;
    cursor: not-allowed;
    border-color: #2e002e;
    transform: none;
}

#update-log-modal {
    background-color: transparent;
    pointer-events: none; 
    z-index: 3; 
}

#update-log-content {
    background-color: #383838;
    margin: 0; 
    padding: 20px 30px;
    border: 2px solid #555;
    width: 90%;
    max-width: 500px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    color: white;
    display: flex;
    flex-direction: column;
    position: absolute; 
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: auto; 
}

#update-log-content h2 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 2rem;
}

#update-log-content h3 {
    margin-top: 0;
    color: #ccc;
}

#update-log-content ul {
    list-style-type: '» ';
    padding-left: 20px;
}

#update-log-content li {
    margin-bottom: 0.5rem;
}

#achievements-modal {
    background-color: transparent;
    pointer-events: none;
    z-index: 3;
}

#achievements-modal .modal-content {
    background-color: #383838;
    margin: 0;
    padding: 20px;
    border: 2px solid #555;
    width: 80%;
    max-width: 800px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    color: white;
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: auto;
}

#achievements-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    padding: 10px;
    min-height: 40vh; 
    flex-grow: 1; 
}

.achievement {
    background-color: #4a4a4a;
    border: 2px solid #666;
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.3s ease;
    position: relative; 
}

.achievement.removed {
    background-color: #2b2b2b;
    border-color: #444;
    filter: grayscale(100%);
    opacity: 0.6;
}

.achievement.removed .achievement-title {
    text-decoration: line-through;
    color: #888;
}

.achievement:hover .achievement-tooltip {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.achievement-tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 105%; 
    left: 50%;
    transform: translateX(-50%) translateY(10px); 
    z-index: 10;
    background-color: #222;
    border-radius: 6px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.5);
    padding: 8px;
    width: max-content;
    max-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none; 
}

.achievement-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #222 transparent transparent transparent;
}

.tooltip-difficulty {
    font-weight: bold;
    padding: 3px 8px;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

.tooltip-tier {
    font-size: 0.9em;
    color: #ccc;
}

.achievement.unlocked {
    background-color: #5a3a00;
    border-color: #ffd700;
}

.achievement-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.achievement.unlocked .achievement-title {
    color: #ffd700;
}

.achievement-description {
    font-size: 0.9rem;
    color: #b0b0b0;
}

.achievement.unlocked .achievement-description {
    color: #f0f0f0;
}

#achievements-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
    gap: 1rem;
}

#achievements-pagination button {
    background-color: #555;
    color: white;
    border: 1px solid #777;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#achievements-pagination button:hover:not(:disabled) {
    background-color: #666;
}

#achievements-pagination button:disabled {
    background-color: #444;
    color: #888;
    cursor: not-allowed;
}

#music-player {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    background-color: rgba(20, 20, 20, 0.85);
    color: #e0e0e0;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    z-index: 5;
    border: 1px solid #444;
    box-shadow: 0 2px 8px rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

#music-track-name, #music-track-creator {
    font-weight: bold;
    color: #fff;
}

#null-upgrades-button {
    height: 200px; 
    justify-content: center; 
    background-image: url("/Minecraft_missing_texture_block.png");
    background-size: 128px 128px;
    animation: scroll-background-diagonal 10s linear infinite;
    border-color: #4d004d;
    border-width: 5px;
    background-color: #1a001a;
}

#nullified-text-container {
    text-align: center;
    margin: 0.5rem 0 1rem 0;
    font-size: 1.5rem;
    font-weight: bold;
    font-family: 'Courier New', monospace;
}

.nullified-char {
    display: inline-block;
    animation: nullified-shake 0.5s infinite, nullified-glow 2s infinite ease-in-out;
    animation-delay: calc(var(--i) * 0.08s);
}

#genesis-text-container {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.wavychar {
    display: inline-block;
    animation: rainbow 5s infinite linear, wavy 2s infinite ease-in-out;
    animation-delay: calc(var(--i) * 0.1s);
    font-weight: bold;
}