/* style.css */

/* ベーススタイル */
body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f5f5f5; /* オフホワイト背景 */
    color: #333; /* 濃い文字色 */
}

h1 {
  position: relative;
  padding: 1.5rem 1.5rem calc(1.5rem + 10px);
  border: 2px solid #000;
}

h1:after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 10px;
  content: '';
  border-top: 2px solid #000;
  background-image: -webkit-repeating-linear-gradient(135deg, #000, #000 1px, transparent 2px, transparent 5px);
  background-image: repeating-linear-gradient(-45deg, #000, #000 1px, transparent 2px, transparent 5px);
  background-size: 7px 7px;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

#flash-container {
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 20px;
    width: 600px;
    text-align: center;
}

#focus-text {
    font-size: 2rem;
    font-weight: bold;
    color: white; /* 白文字 */
    background-color: #ff6347; /* トマト色で目立たせる */
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
}

#number-display {
    font-size: 5rem;
    margin: 20px;
    color: #333; /* 通常は濃い文字色 */
    text-align: center;
}

.white-text {
    color: white !important; /* ゲーム中は白文字に */
}

label {
    font-size: 1rem;
    color: #666;
    margin-top: 10px;
}

select {
    background-color: #4CAF50;
    font-size: 1rem;
    padding: 8px 12px;
    margin-top: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    outline: none;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
    background-color: #ddd; 
}

#answer, button {
    font-size: 1rem;
    padding: 8px 12px;
    margin-top: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    outline: none;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
}

button {
    background-color: #4CAF50; /* グリーンボタン */
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049; /* ボタンのホバー時の色 */
}

#result {
    font-size: 3rem;
    margin-top: 20px;
    color: #333;
    font-weight: bold;
    text-align: center;
}