body {
    background-color: #f4e4bc; /* パピルス色 */
    background-image: radial-gradient(#d2b48c 1px, transparent 0);
    background-size: 40px 40px;
    font-family: "Sawarabi Mincho", "Hiragino Mincho Pro", serif;
    color: #4a3721;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 800px;
    width: 100%;
    background: rgba(255, 255, 255, 0.5);
    border: 10px double #d4af37; /* 黄金の二重線 */
    padding: 30px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

header {
    text-align: center;
    border-bottom: 2px solid #d4af37;
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 5px;
    color: #8b4513;
}

.subtitle {
    font-style: italic;
    color: #c4a484;
}

textarea {
    width: 100%;
    height: 150px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid #d4af37;
    padding: 10px;
    font-size: 1.1rem;
    box-sizing: border-box;
    margin-bottom: 15px;
}

button {
    width: 100%;
    padding: 15px;
    background-color: #ffd700;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px #b8860b;
    transition: 0.1s;
}

button:active {
    box-shadow: 0 0 #b8860b;
    transform: translateY(4px);
}

.advice-box {
    margin: 20px 0;
    padding: 15px;
    background: #fff8dc;
    border-left: 5px solid #d4af37;
    font-weight: bold;
    min-height: 50px;
    display: flex;
    align-items: center;
}

.output-area {
    margin-top: 30px;
    padding: 30px;
    background: #5d4037;
    background-image: 
        linear-gradient(rgba(0,0,0,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    color: #ffd700;
    border-radius: 15px;
    border: 4px inset #8b4513;
    min-height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.glyphs {
    font-size: 4rem; /* 文字を大きく */
    word-break: break-all;
    text-align: center;
    line-height: 1; /* 行間を詰めるとブロック感が出る */
    letter-spacing: 0.2rem;
    display: inline-block;
    white-space: pre; /* 改行を有効にする */
    font-family: serif;
    transition: all 0.5s ease;
}

footer {
    margin-top: 40px;
    text-align: center;
    font-size: 0.8rem;
}