/* 設定画面 */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}
.settings-group {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
}
.settings-group legend {
    font-weight: bold;
    padding: 0 10px;
}
.settings-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-top: 5px;
}
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}
.checkbox-group.compact {
    flex-direction: row;
    gap: 20px;
}
.checkbox-group label {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}
.checkbox-group input {
    margin-right: 8px;
}
.start-message {
    text-align: center;
    padding: 20px;
    background-color: var(--background-color);
    border-radius: 8px;
}
.start-message .button {
    padding: 12px 24px;
    font-size: 1.3rem;
    width: 100%;
    max-width: 280px;
}
.start-message .button i {
    margin-right: 8px;
}
.start-hint {
    margin-top: 10px;
    font-size: 0.9rem;
    color: #666;
}

/* 問題画面 */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.progress-bar {
    width: 80%;
    height: 15px;
    background-color: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
}
.progress-bar div {
    width: 0%;
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.2s;
}
.timer {
    font-family: 'Roboto Mono', monospace;
    font-size: 1.5rem;
    font-weight: bold;
}
.question-area { text-align: center; }
.question-number {
    font-size: 1rem;
    color: #888;
}
.question-text {
    font-family: 'Roboto Mono', monospace;
    font-size: 3rem;
    font-weight: bold;
    margin: 10px 0;
}
.answer-area {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.answer-input {
    width: 100%;
    max-width: 240px;
    padding: 15px;
    font-size: 2rem;
    text-align: center;
    font-family: 'Roboto Mono', monospace;
    border: 2px solid var(--border-color);
    border-radius: 8px;
}
.answer-input:focus {
    outline: none;
    border-color: var(--primary-color);
}
#submit-answer-btn {
    padding: 15px 25px;
    font-size: 1.5rem;
}


/* 結果画面 */
.result-title {
    text-align: center;
    font-size: 1.8rem;
}
.result-summary {
    display: flex;
    justify-content: space-around;
    text-align: center;
    background-color: #f8f9fa;
    padding: 20px 10px;
    border-radius: 8px;
    border-top: 2px solid var(--primary-color);
    margin: 20px 0;
}
.result-item { flex-basis: 30%; }
.result-label {
    display: block;
    font-size: 1rem;
    color: #555;
    margin-bottom: 5px;
}
.count-number {
    font-size: 2.0rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Roboto Mono', monospace;
}
.result-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
}
.result-details {
    margin-top: 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}
.result-details summary {
    font-weight: bold;
    padding: 15px;
    cursor: pointer;
    background-color: #f8f9fa;
}
.result-table-wrapper {
    max-height: 300px;
    overflow-y: auto;
}
#result-table {
    width: 100%;
    border-collapse: collapse;
}
#result-table th, #result-table td {
    padding: 10px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    font-family: 'Roboto Mono', monospace;
}
#result-table thead {
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1;
}
#result-table .incorrect-answer {
    background-color: #f8d7da;
    color: #721c24;
}
#result-table .incorrect-answer .user-answer {
    text-decoration: line-through;
}

.hidden { display: none !important; }