:root {
    --bg-color: #f5f5f5;
    --dot-color: #e0e0e0;
    --primary-text: #5d4037;
    --paper-white: #fffcf5;
    --accent-color: #ffcc80;
    --btn-color: #ffab91;
    --btn-hover: #ff8a65;
}

body,
html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    height: 100%;
    overflow: hidden;
    font-family: 'Mochiy Pop One', sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(var(--dot-color) 20%, transparent 20%);
    background-size: 20px 20px;
    color: var(--primary-text);
    user-select: none;
    -webkit-user-select: none;
}

#game-container {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 480px;
    /* Mobile-like aspect ratio preferred, or full screen */
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    /* Flex column for layout */
    justify-content: flex-start;
    /* Align top */
    align-items: center;
}

canvas {
    display: block;
    width: 100%;
    flex: 1;
    /* Fill remaining space */
}

#control-area {
    width: 100%;
    height: 100px;
    background: rgba(255, 255, 255, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    border-top: 2px solid #fff;
    z-index: 5;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 252, 245, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: opacity 0.3s;
    text-align: center;
}

.hidden {
    opacity: 0;
    pointer-events: none;
    display: none;
    /* simple hide */
}

#game-logo {
    max-width: 80%;
    height: auto;
    margin-bottom: 1rem;
    filter: drop-shadow(2px 2px 0px #fff);
    animation: bounce 2s infinite;
}

h2 {
    font-size: 2.5rem;
    color: #ef5350;
}

p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.characters-preview {
    display: flex;
    gap: 10px;
    margin-bottom: 2rem;
}

.characters-preview img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: bounce 2s infinite;
}

.characters-preview img:nth-child(2) {
    animation-delay: 0.2s;
}

.characters-preview img:nth-child(3) {
    animation-delay: 0.4s;
}

.characters-preview img:nth-child(4) {
    animation-delay: 0.6s;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

button {
    font-family: 'Mochiy Pop One', sans-serif;
    font-size: 1.5rem;
    padding: 10px 40px;
    border: none;
    border-radius: 50px;
    background: var(--btn-color);
    color: white;
    box-shadow: 0 4px 0 #cc5d41;
    /* 3D effect */
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s;
}

button:active {
    transform: translateY(4px);
    box-shadow: 0 0 0 #cc5d41;
}

button:hover {
    background: var(--btn-hover);
}

#ui-layer {
    position: absolute;
    top: 10px;
    left: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    /* Let clicks pass through to canvas */
    z-index: 5;
}

#score-board,
#timer-board {
    background: rgba(255, 255, 255, 0.8);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 1.2rem;
    font-weight: bold;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#final-score {
    font-size: 5rem;
    font-weight: 900;
    color: #ff7043;
    margin: 20px 0;
    /* Glitter Effect */
    background: linear-gradient(45deg, #ff7043, #ffd54f, #ff7043);
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 2s linear infinite;
    text-shadow: 0 0 10px rgba(255, 167, 38, 0.5);
}

.boing {
    animation: shine 2s linear infinite, boing 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes boing {
    0% {
        transform: scale(1);
    }

    30% {
        transform: scale(1.5);
    }

    50% {
        transform: scale(0.9);
    }

    70% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

#combo-display {
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    /* Starting size, JS handles scaling */
    font-weight: 900;

    /* Gold Glitter Effect */
    background: linear-gradient(45deg, #ffd700, #fffde7, #ffd700, #ffb300);
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine-gold 2s linear infinite, pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

    /* Stroke workaround for gradient text: simple text-stroke might get clipped by background-clip: text */
    /* So we use a filter drop-shadow for outline effect or standard stroke */
    -webkit-text-stroke: 0;
    /* Clear stroke as it conflicts with gradient fill usually, or use filter */
    filter: drop-shadow(0 0 2px #3e2723) drop-shadow(0 0 5px #ff6f00);

    pointer-events: none;
    z-index: 20;
    transition: opacity 0.3s;
    white-space: nowrap;
    font-family: 'Mochiy Pop One', sans-serif;
}

@keyframes shine-gold {
    to {
        background-position: 200% center;
    }
}

@keyframes pop {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 0;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.4);
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -50%) scale(1.0);
        opacity: 1;
    }
}

#shuffle-btn {
    position: static;
    /* Reset absolute */
    width: 70px;
    height: 70px;
    border-radius: 50%;
    font-size: 2.5rem;
    padding: 0;
    line-height: 70px;
    background: #ffffff;
    box-shadow: 0 6px 0 #bdbdbd;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 3px solid #fff;
    /* White rim */
    overflow: hidden;
    /* Clip image to circle */
}

#shuffle-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* or contain, depending on image */
    display: block;
}

#shuffle-btn:active {
    box-shadow: 0 0 0 #bdbdbd;
    transform: translateY(4px);
}

.urgent-slow {
    animation: pulse-border 1s infinite alternate;
}

.urgent-fast {
    animation: pulse-border 0.2s infinite alternate;
}

@keyframes pulse-border {
    from {
        box-shadow: inset 0 0 0 rgba(255, 0, 0, 0);
        border: 4px solid transparent;
    }

    to {
        box-shadow: inset 0 0 80px rgba(255, 69, 0, 0.6);
        border: 4px solid rgba(255, 69, 0, 0.8);
    }
}

#sugoi-popup {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    z-index: 30;
    pointer-events: none;
    display: flex;
    /* Ensure it can be displayed when not hidden */
}

#sugoi-popup img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.8));
}

.popup-animate {
    animation: boing-enter 0.8s ease-out forwards;
}

@keyframes boing-enter {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 0;
    }

    30% {
        transform: translate(-50%, -50%) scale(1.4);
        opacity: 1;
    }

    50% {
        transform: translate(-50%, -50%) scale(0.9);
    }

    70% {
        transform: translate(-50%, -50%) scale(1.1);
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
}

.ranking-container {
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 15px;
    margin: 15px 0;
    width: 80%;
    border: 2px solid #ffab91;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.ranking-container h3 {
    margin: 0 0 10px 0;
    color: #ff7043;
    font-size: 1.2rem;
    border-bottom: 2px dashed #ffab91;
    padding-bottom: 5px;
}

#ranking-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

#ranking-list li {
    font-size: 1.1rem;
    padding: 5px 0;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
}

#ranking-list li:last-child {
    border-bottom: none;
}

#ranking-list li span:first-child {
    font-weight: bold;
    color: #5d4037;
    margin-right: 10px;
}

.share-btn {
    background: #000;
    /* X (Twitter) Black */
    color: #fff;
    font-size: 1rem;
    padding: 8px 30px;
    margin-bottom: 15px;
    box-shadow: 0 4px 0 #333;
}

.share-btn:hover {
    background: #333;
}

.share-btn:active {
    box-shadow: 0 0 0 #333;
    transform: translateY(4px);
}

.result-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    width: 100%;
    margin-bottom: 15px;
}