body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    overflow: hidden;
    font-family: 'Arial', sans-serif;
    background: url('image.png') no-repeat center center;
    background-size: cover;
    background-attachment: fixed;
}

#game-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 1s ease-in-out;
}

#start-screen, #end-screen {
    text-align: center;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 40px;
    border-radius: 20px;
    color: white;
}

#start-screen h1, #end-screen h2 {
    margin-bottom: 20px;
}

#start-button, #restart-button {
    padding: 15px 30px;
    font-size: 1.2em;
    cursor: pointer;
    border: none;
    border-radius: 10px;
    background-color: #4a90e2;
    color: white;
    transition: background-color 0.3s;
}

#start-button:hover, #restart-button:hover {
    background-color: #357abd;
}

#github-link {
    position: absolute;
    bottom: 20px;
    right: 20px;
    font-size: 0.9em;
    color: rgba(255, 255, 255, 0.8);
}

#github-link a {
    color: #4a90e2;
    text-decoration: none;
}

#github-link a:hover {
    text-decoration: underline;
}

.hidden {
    display: none;
}

#stats {
    position: fixed;
    top: 20px;
    right: 20px;
    font-size: 2em;
    z-index: 1001;
}

#timer {
    font-size: 0.7em;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

#progress-bar {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 200px;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    z-index: 1001;
    overflow: hidden;
}

#progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #4a90e2, #87ceeb);
    border-radius: 8px;
    transition: width 1s ease-in-out;
}

#character-container {
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: transform 0.5s ease-in-out;
}

#anglerfish {
    width: 150px;
    height: auto;
    transition: transform 0.5s ease-in-out;
}

#message-box {
    position: fixed;
    top: 5%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(255, 255, 255, 0.95);
    padding: 15px;
    border-radius: 10px;
    width: 300px;
    text-align: center;
    font-size: 1.1em;
    z-index: 1001;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

#question-container {
    position: fixed;
    bottom: 5%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 600px;
    max-height: 33vh;
    overflow-y: auto;
    background-color: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

#options-container {
    margin-top: 20px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.option-button {
    padding: 15px 25px;
    font-size: 1.1em;
    cursor: pointer;
    border: 2px solid #4a90e2;
    background-color: transparent;
    color: white;
    border-radius: 10px;
    transition: background-color 0.3s, color 0.3s;
    flex: 0 1 auto;
    min-width: 80px;
}

.option-button:hover {
    background-color: #4a90e2;
    color: white;
}

.bubble-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.bubble {
    position: absolute;
    bottom: -50px;
    width: 20px;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: rise 10s infinite ease-in;
}

@keyframes rise {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh);
        opacity: 0;
    }
}

/* 태블릿 및 모바일 대응 */
@media screen and (max-width: 1024px) {
    #question-container {
        width: 90%;
        padding: 15px;
        bottom: 3%;
    }
    
    .option-button {
        padding: 12px 20px;
        font-size: 1rem;
        min-width: 70px;
    }
    
    #stats {
        font-size: 1.5em;
        top: 15px;
        right: 15px;
    }
    
    #progress-bar {
        width: 150px;
        height: 18px;
        top: 15px;
        left: 15px;
    }
    
    #message-box {
        top: 3%;
        width: 280px;
    }
}

@media screen and (max-width: 768px) {
    #question-container {
        width: 95%;
        padding: 12px;
        bottom: 2%;
        font-size: 0.9rem;
    }
    
    .option-button {
        padding: 10px 15px;
        font-size: 0.9rem;
        min-width: 60px;
    }
    
    #stats {
        font-size: 1.2em;
        top: 10px;
        right: 10px;
    }
    
    #progress-bar {
        width: 120px;
        height: 16px;
        top: 10px;
        left: 10px;
    }
    
    #anglerfish {
        width: 120px;
    }
    
    #message-box {
        top: 2%;
        width: 250px;
        font-size: 1rem;
    }
}