body {
    background-color: #0d0d0d; /* より深い黒 */
    color: #b0b0b0;
    font-family: 'Hiragino Mincho ProN', 'serif'; /* 明朝体で情緒を出す */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

#container {
    width: 90%;
    max-width: 550px;
    padding: 40px;
    background-color: #141414;
    border: 1px solid #222;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

#detox-input {
    width: 100%;
    height: 250px;
    background: transparent;
    color: #eee;
    border: 1px solid #333;
    padding: 15px;
    resize: none;
    font-size: 1.1rem;
    box-sizing: border-box;
    outline: none;
}

#burn-button {
    width: 100%;
    margin-top: 20px;
    padding: 15px;
    background: #222;
    color: #888;
    border: 1px solid #333;
    cursor: pointer;
    transition: 0.3s;
}

#burn-button:hover:not(:disabled) {
    background: #eee;
    color: #000;
}

#burn-button:disabled {
    color: #444;
    cursor: default;
}

#view-records-button {
    background: transparent;
    border: none;
    color: #555;
    margin-top: 20px;
    cursor: pointer;
    text-decoration: underline;
    font-size: 0.8rem;
}

#burn-animation {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.5s;
    z-index: 1000;
}