/* 全体の基本スタイル */
:root {
    --primary-color: #337ab7;
    --success-color: #5cb85c;
    --danger-color: #d9534f;
    --warning-color: #f0ad4e;
    --light-gray: #f8f9fa;
    --gray-border: #dee2e6;
    --text-color: #333;
    --text-light: #6c757d;
    --white: #fff;
    --border-radius: 8px;
    --transition: all 0.2s ease-in-out;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    background-color: var(--white);
    color: var(--text-color);
    line-height: 1.6;
}

/* ヘッダーのデザイン */
header {
    padding: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-border);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.header-banner {
    height: 200px;
    background-color: #4a5a70;
    background-image: url('https://www.celas.osaka-u.ac.jp/wp-content/themes/celas-website/images/celas.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

#auth-container {
    padding: 10px 30px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 15px; 
    min-height: 60px;
}

#user-info { 
    display: flex; 
    align-items: center; 
    gap: 10px; 
}

/* ログインフォームのデザイン */
#login-view {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 50px 20px;
    background-color: var(--light-gray);
    min-height: calc(100vh - 260px);
}

.login-form-container {
    background: var(--white);
    padding: 30px 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border: 1px solid var(--gray-border);
    width: 100%;
    max-width: 450px;
}

#login-form label {
    display: block;
    margin-bottom: 5px;
    margin-top: 15px;
    font-weight: bold;
    font-size: 0.9em;
    color: var(--text-light);
}

#login-form select, #login-form input {
    width: 100%;
    font-size: 16px;
    padding: 10px;
}

#login-form button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    margin-top: 20px;
    background-color: #333;
    border-color: #333;
}
#login-form button:hover {
    background-color: #555;
}
.auth-links {
    text-align: right;
    margin-top: 15px;
}
.auth-links a { 
    font-size: 0.9em;
    color: var(--primary-color);
}

/* ホーム画面のスタイル */
#home-view, #reservation-view, #calendar-view, #profile-view, #history-view, #admin-view, #forgot-password-view {
    padding: 20px;
}

#home-view h2 {
    text-align: center;
    font-size: 2em;
    color: var(--text-color);
    border-bottom: none;
    margin-bottom: 40px;
}
.home-menu {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 40px;
}
.home-menu-item {
    background: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: var(--border-radius);
    width: 180px;
    height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    color: var(--text-color);
}
.home-menu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}
.home-menu-item i {
    color: var(--primary-color);
}
.home-menu-item span {
    font-size: 1.1em;
    font-weight: bold;
}

/* フォーム要素の共通スタイル */
input[type="text"], 
input[type="password"], 
input[type="email"],
input[type="date"], 
input[type="number"], 
textarea,
select {
    font-size: 14px;
    padding: 8px 12px;
    border: 1px solid var(--gray-border);
    border-radius: 4px;
    transition: var(--transition);
}

button {
    font-size: 14px;
    padding: 8px 16px;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    background-color: var(--primary-color);
    color: var(--white);
}

/* メインコンテンツ */
main {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px;
}

h2 { 
    border-bottom: 2px solid var(--primary-color); 
    padding-bottom: 10px; 
    margin-bottom: 20px; 
    color: var(--primary-color); 
}

/* 戻るボタン */
.back-to-home-button, .back-to-login-button { 
    margin-bottom: 20px;
    background-color: var(--white);
    color: var(--text-light);
    border: 1px solid var(--gray-border);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.back-to-home-button:hover, .back-to-login-button:hover {
    background-color: var(--light-gray);
    color: var(--text-color);
}

.hidden { display: none !important; }

/* --- 既存のスタイル --- */
#building-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
#building-list button { background: var(--white); color: var(--primary-color); border: 1px solid var(--primary-color); min-width: 120px; }
#building-list button:hover, #building-list button.active { background: var(--primary-color); color: var(--white); }
#classroom-list { list-style: none; padding: 0; border: 1px solid var(--gray-border); border-radius: var(--border-radius); overflow: hidden; }
#classroom-list li { padding: 15px; border-bottom: 1px solid var(--gray-border); cursor: pointer; transition: var(--transition); }
#classroom-list li:last-child { border-bottom: none; }
#classroom-list li:hover { background-color: #e9ecef; }
#admin-classroom-list { list-style: none; padding: 0; }
#admin-classroom-list li { padding: 10px; border-bottom: 1px solid #eee; }
#history-section h3 { border-bottom: 1px solid #ccc; padding-bottom: 8px; margin-top: 30px; }
#history-section ul { list-style: none; padding: 0; }
#history-section li { background: #f9f9f9; border: 1px solid var(--gray-border); padding: 15px; margin-bottom: 10px; border-radius: var(--border-radius); }
#reservation-modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.5); display: flex; justify-content: center; align-items: center; z-index: 1000; }
.modal-content { background-color: var(--white); padding: 20px 30px; border-radius: var(--border-radius); width: 90%; max-width: 500px; box-shadow: 0 5px 15px rgba(0,0,0,0.3); max-height: 90vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--gray-border); padding-bottom: 10px; margin-bottom: 20px; }
.close-button { font-size: 28px; font-weight: bold; cursor: pointer; color: #aaa; border: none; background: none; padding: 0; width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; }

/* 予約画面の操作パネル */
#reservation-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
    padding: 15px;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 凡例のスタイル */
.legend {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: auto; /* 右寄せ */
}

.legend-item {
    width: 15px;
    height: 15px;
    display: inline-block;
    border: 1px solid #777;
}

.legend-item.available { background-color: #5cb85c; }
.legend-item.reserved { background-color: #d9534f; }


/* 平面図SVGのスタイル */
#floor-map-container {
    width: 100%;
    margin-top: 20px;
}

.classroom-shape {
    stroke: #333; /* 教室の枠線 */
    stroke-width: 1;
    transition: all 0.2s ease;
}

/* 予約可能な教室のスタイル */
.classroom-shape.available {
    fill: #5cb85c !important; /* 緑色 */
    cursor: pointer;
    opacity: 0.7;
}
.classroom-shape.available:hover {
    fill: #4a9d4a !important; /* 少し濃い緑 */
    stroke-width: 2.5;
    stroke: var(--primary-color);
    opacity: 0.7;
}

/* 予約済みの教室のスタイル */
.classroom-shape.reserved {
    fill: #d9534f !important;/* 赤色 */
    cursor: not-allowed;
    opacity: 0.7;
}

/* 音出し禁止の教室のスタイル */
.classroom-shape.no-sound {
    fill: #ffd700 !important; /* 黄色 */
    cursor: pointer;
    opacity: 0.7;
}
.classroom-shape.no-sound:hover {
    fill: #ffcc00 !important; /* 少し濃い黄色 */
    stroke-width: 2.5;
    stroke: var(--warning-color);
    opacity: 0.7;
}

/* 凡例に音出し禁止を追加 */
.legend-item.no-sound { 
    background-color: #ffd700; 
}

/* カレンダーのスタイル */
#calendar-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin: 30px 0;
}

#calendar-controls button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95em;
}

#calendar-controls button:hover {
    background: #2968a3;
}

#current-month-year {
    font-size: 1.5em;
    font-weight: bold;
    min-width: 240px;
    text-align: center;
}

#calendar-container {
    background: white;
    border: 1px solid var(--gray-border);
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-header {
    font-weight: bold;
    text-align: center;
    padding: 12px 8px;
    background: var(--light-gray);
    border-radius: 4px;
    font-size: 0.9em;
}

.calendar-day {
    aspect-ratio: 1;
    min-height: 60px;
    border: 1px solid var(--gray-border);
    border-radius: 4px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.calendar-day:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.calendar-day.other-month {
    color: #ccc;
    background: #fafafa;
}

.calendar-day.past {
    background: #f5f5f5;
    color: #999;
    cursor: not-allowed;
}

.calendar-day.past:hover {
    transform: none;
    box-shadow: none;
}

.calendar-day.has-reservation {
    background: #ffe4e1;
    border-color: var(--danger-color);
}

.calendar-day.available {
    background: #e8f5e9;
    border-color: var(--success-color);
}

.calendar-day.sunday {
    color: #d32f2f;
}

.calendar-day.saturday {
    color: #1976d2;
}

.calendar-day .day-number {
    font-size: 1.1em;
    font-weight: bold;
    margin-bottom: 4px;
}

.calendar-day .reservation-count {
    font-size: 0.75em;
    color: var(--danger-color);
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: white;
    padding: 2px 4px;
    border-radius: 3px;
    border: 1px solid var(--danger-color);
}

/* 凡例のスタイル - バランスを改善 */
#calendar-legend {
    max-width: 800px;  /* カレンダーと同じ幅に */
    margin: 30px auto;  /* 中央寄せ */
    padding: 20px;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-evenly;  /* 均等配置 */
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

#calendar-legend h4 {
    margin: 0;
    white-space: nowrap;
    color: var(--text-color);
    font-size: 1em;
    font-weight: bold;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.legend-item span {
    white-space: nowrap;
    font-size: 0.9em;
}

.legend-color {
    width: 24px;
    height: 24px;
    border: 1px solid #ccc;
    border-radius: 4px;
    flex-shrink: 0;
}

.legend-color.available {
    background: #e8f5e9;
    border-color: var(--success-color);
}

.legend-color.has-reservation {
    background: #ffe4e1;
    border-color: var(--danger-color);
}

.legend-color.past {
    background: #f5f5f5;
}

/* 日付詳細表示 */
#day-reservations {
    background: white;
    border: 1px solid var(--gray-border);
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
}

#day-reservations h3 {
    margin-top: 0;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

#day-reservations-list {
    list-style: none;
    padding: 0;
}

#day-reservations-list li {
    padding: 15px;
    border-bottom: 1px solid var(--gray-border);
    background: var(--light-gray);
    margin-bottom: 10px;
    border-radius: 4px;
}

#day-reservations-list li:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    #calendar-container {
        padding: 10px;
    }
    
    .calendar-grid {
        gap: 4px;
    }
    
    .calendar-day {
        min-height: 50px;
        padding: 4px;
    }
    
    .calendar-day .day-number {
        font-size: 1em;
    }
    
    .calendar-header {
        padding: 8px 4px;
        font-size: 0.8em;
    }
    
    #calendar-legend {
        padding: 15px;
        gap: 15px;
    }
    
    #calendar-legend h4 {
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
    }
}

/* 管理画面のスタイル */
.admin-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--gray-border);
}

.admin-tab {
    background: none;
    border: none;
    padding: 10px 20px;
    font-size: 1em;
    color: var(--text-color);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.admin-tab:hover {
    background: var(--light-gray);
}

.admin-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: bold;
}

.admin-tab-content {
    margin-top: 20px;
}

/* 管理画面の情報テキスト */
.info-text {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 0.95em;
}

/* マトリックステーブル */
#classroom-matrix-container {
    overflow-x: auto;
    margin-bottom: 30px;
    border: 1px solid var(--gray-border);
    border-radius: var(--border-radius);
}

.classroom-matrix {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.classroom-matrix th,
.classroom-matrix td {
    border: 1px solid #e0e0e0;
    padding: 8px;
    text-align: center;
    min-width: 100px;
}

.classroom-matrix th {
    background: #f5f5f5;
    font-weight: bold;
    position: sticky;
    top: 0;
    z-index: 10;
}

.classroom-matrix th:first-child,
.classroom-matrix td:first-child {
    position: sticky;
    left: 0;
    background: #f8f9fa;
    z-index: 5;
    text-align: left;
    font-weight: bold;
    min-width: 80px;
}

.date-header {
    font-size: 0.9em;
}

.date-header .date-num {
    display: block;
    font-size: 1.1em;
    margin-top: 3px;
    font-weight: normal;
}

/* セレクトボックス */
.restriction-select {
    width: 100%;
    padding: 4px;
    border: 1px solid #dadce0;
    border-radius: 4px;
    font-size: 0.85em;
}

.restriction-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* セレクトボックスの選択肢に応じた背景色 */
.restriction-select[value="closed"],
.restriction-select option[value="closed"]:checked {
    background-color: #ffebee;
}

.restriction-select[value="no-sound"],
.restriction-select option[value="no-sound"]:checked {
    background-color: #fff3e0;
}

/* アクションボタン */
.action-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 20px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #2968a3;
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn-warning {
    background: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background: #ec971f;
}

/* お知らせ管理 */
.notice-editor {
    background: var(--light-gray);
    padding: 25px;
    border-radius: var(--border-radius);
    max-width: 800px;
}

.notice-editor label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
    color: var(--text-color);
}

.notice-editor textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--gray-border);
    border-radius: 4px;
    resize: vertical;
    margin-bottom: 20px;
    font-family: inherit;
    line-height: 1.5;
}

.notice-editor textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 学生向けお知らせボックス */
.student-notice-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.student-notice-box h3 {
    color: #856404;
    margin-top: 0;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.student-notice-box #notice-content {
    color: #856404;
    white-space: pre-wrap;
    line-height: 1.6;
}

/* 予約モーダル内の警告 */
.warning-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.warning-box i {
    font-size: 1.2em;
    flex-shrink: 0;
}

/* パスワードリセット管理 */
.password-reset-section {
    background: var(--light-gray);
    padding: 25px;
    border-radius: var(--border-radius);
    max-width: 800px;
}

.password-reset-section label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
    color: var(--text-color);
}

.password-reset-section select {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid var(--gray-border);
    border-radius: 4px;
}

.reset-result-display {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 4px;
    padding: 20px;
    margin-top: 20px;
}

.reset-result-display h4 {
    color: #155724;
    margin-top: 0;
    margin-bottom: 15px;
}

.result-info {
    margin-bottom: 15px;
}

.result-info p {
    margin: 8px 0;
    color: #155724;
}

.warning-text {
    color: #856404;
    background: #fff3cd;
    padding: 10px;
    border-radius: 4px;
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* パスワードを忘れた場合のページ */
.forgot-password-info {
    max-width: 600px;
    margin: 0 auto;
}

.info-box {
    background: #e3f2fd;
    border: 1px solid #90caf9;
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 30px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.info-box i {
    font-size: 1.5em;
    color: #1976d2;
    flex-shrink: 0;
    margin-top: 5px;
}

.info-box h3 {
    margin: 0 0 10px 0;
    color: #1976d2;
}

.info-box p {
    margin: 0;
    line-height: 1.6;
}

.contact-info, .required-info {
    background: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
}

.contact-info h4, .required-info h4 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 8px;
}

.contact-info ul, .required-info ul {
    margin: 0;
    padding-left: 20px;
}

.contact-info li, .required-info li {
    margin-bottom: 8px;
    line-height: 1.5;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .classroom-matrix th,
    .classroom-matrix td {
        padding: 6px;
        font-size: 0.85em;
        min-width: 80px;
    }
    
    .date-header .date-num {
        font-size: 1em;
    }
    
    .restriction-select {
        font-size: 0.8em;
        padding: 3px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.95em;
    }

    .admin-tabs {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .admin-tab {
        padding: 8px 15px;
        font-size: 0.9em;
    }
}

/* 既存の恒久的使用禁止リストのスタイル（そのまま残す） */
#admin-classroom-list {
    list-style: none;
    padding: 0;
}

#admin-classroom-list li {
    padding: 10px;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
}

#admin-classroom-list li:hover {
    background: var(--light-gray);
}

#admin-classroom-list label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    width: 100%;
}

#admin-classroom-list input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 初回ログイン設定画面 */
#first-login-setup-view {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 260px);
    background-color: var(--light-gray);
    padding: 20px;
}

.first-login-container {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border: 1px solid var(--gray-border);
    width: 100%;
    max-width: 500px;
}

.info-message {
    background-color: #e3f2fd;
    border: 1px solid #90caf9;
    color: #1565c0;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-message i {
    font-size: 1.2em;
    flex-shrink: 0;
}

#first-login-form label {
    display: block;
    margin-bottom: 5px;
    margin-top: 20px;
    font-weight: bold;
    color: var(--text-light);
}

#first-login-form input {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border: 1px solid var(--gray-border);
    border-radius: 4px;
}

#first-login-form button {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    margin-top: 25px;
    background-color: var(--success-color);
    border: none;
    color: white;
    font-weight: bold;
}

#first-login-form button:hover {
    background-color: #4a9d4a;
}

/* 設定画面のスタイル */
.settings-container {
    max-width: 600px;
    margin: 0 auto;
}

.settings-section {
    background: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.settings-section h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.2em;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.user-info-display {
    margin-bottom: 15px;
}

.user-info-display p {
    margin: 10px 0;
    color: var(--text-color);
    font-size: 1em;
}

.user-info-display strong {
    color: var(--text-light);
    font-weight: 600;
}

#password-change-form label {
    display: block;
    margin-bottom: 5px;
    margin-top: 15px;
    font-weight: bold;
    color: var(--text-light);
}

#password-change-form input {
    width: 100%;
    padding: 10px;
    font-size: 14px;
    border: 1px solid var(--gray-border);
    border-radius: 4px;
    margin-bottom: 5px;
}

#password-change-form button {
    margin-top: 20px;
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

#password-change-form button:hover {
    background-color: #2968a3;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-secondary i {
    font-size: 1.1em;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .settings-container {
        padding: 0 10px;
    }
    
    .settings-section {
        padding: 20px;
    }

    .forgot-password-info {
        padding: 0 10px;
    }
    
    .info-box {
        flex-direction: column;
        text-align: center;
    }
    
    .info-box i {
        margin: 0;
    }
}