* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* クラシックテーマ（デフォルト） */
    --bg-gradient-start: #667eea;
    --bg-gradient-end: #764ba2;
    --container-bg: #ffffff;
    --text-color: #333333;
    --border-color: #ddd;
    --button-bg: #ffffff;
    --button-border: #ddd;
    --button-active-bg: #667eea;
    --button-active-color: #ffffff;
    --cell-bg: #e9ecef;
    --cell-border: #adb5bd;
    --cell-hover-bg: #dee2e6;
    --cell-revealed-bg: #f8f9fa;
    --cell-flagged-bg: #ffeaa7;
    --cell-mine-bg: #ff7675;
    --cell-mine-exploded-bg: #d63031;
    --info-bg: #f8f9fa;
    --topbar-bg: rgba(255, 255, 255, 0.95);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --scroll-bg: rgba(102, 126, 234, 0.1);
    --scroll-thumb: #667eea;
}

/* ダークテーマ */
[data-theme="dark"] {
    --bg-gradient-start: #2c3e50;
    --bg-gradient-end: #34495e;
    --container-bg: rgba(44, 62, 80, 0.95);
    --text-color: #ecf0f1;
    --border-color: #555;
    --button-bg: #34495e;
    --button-border: #555;
    --button-active-bg: #3498db;
    --button-active-color: #ffffff;
    --cell-bg: #34495e;
    --cell-border: #555;
    --cell-hover-bg: #3c5570;
    --cell-revealed-bg: #2c3e50;
    --cell-flagged-bg: #f39c12;
    --cell-mine-bg: #e74c3c;
    --cell-mine-exploded-bg: #c0392b;
    --info-bg: #34495e;
    --topbar-bg: rgba(52, 73, 94, 0.95);
    --scroll-bg: rgba(52, 152, 219, 0.1);
    --scroll-thumb: #3498db;
}

/* オーシャンテーマ */
[data-theme="ocean"] {
    --bg-gradient-start: #0066cc;
    --bg-gradient-end: #004499;
    --container-bg: rgba(230, 243, 255, 0.95);
    --text-color: #003366;
    --border-color: #99ccff;
    --button-bg: #cce6ff;
    --button-border: #99ccff;
    --button-active-bg: #0066cc;
    --button-active-color: #ffffff;
    --cell-bg: #cce6ff;
    --cell-border: #99ccff;
    --cell-hover-bg: #b3d9ff;
    --cell-revealed-bg: #ffffff;
    --cell-flagged-bg: #ffcc99;
    --cell-mine-bg: #ff6666;
    --cell-mine-exploded-bg: #ff3333;
    --info-bg: #cce6ff;
    --topbar-bg: rgba(230, 243, 255, 0.95);
    --scroll-bg: rgba(0, 102, 204, 0.1);
    --scroll-thumb: #0066cc;
}

/* フォレストテーマ */
[data-theme="forest"] {
    --bg-gradient-start: #27ae60;
    --bg-gradient-end: #229954;
    --container-bg: rgba(232, 246, 232, 0.95);
    --text-color: #1e8449;
    --border-color: #a9d3a9;
    --button-bg: #d5e8d5;
    --button-border: #a9d3a9;
    --button-active-bg: #27ae60;
    --button-active-color: #ffffff;
    --cell-bg: #d5e8d5;
    --cell-border: #a9d3a9;
    --cell-hover-bg: #c2dcc2;
    --cell-revealed-bg: #ffffff;
    --cell-flagged-bg: #ffd9b3;
    --cell-mine-bg: #e74c3c;
    --cell-mine-exploded-bg: #c0392b;
    --info-bg: #d5e8d5;
    --topbar-bg: rgba(232, 246, 232, 0.95);
    --scroll-bg: rgba(39, 174, 96, 0.1);
    --scroll-thumb: #27ae60;
}

/* サンセットテーマ */
[data-theme="sunset"] {
    --bg-gradient-start: #ff7f50;
    --bg-gradient-end: #ff6347;
    --container-bg: rgba(255, 245, 245, 0.95);
    --text-color: #8b4513;
    --border-color: #ffcccc;
    --button-bg: #ffe6e6;
    --button-border: #ffcccc;
    --button-active-bg: #ff7f50;
    --button-active-color: #ffffff;
    --cell-bg: #ffe6e6;
    --cell-border: #ffcccc;
    --cell-hover-bg: #ffd9d9;
    --cell-revealed-bg: #ffffff;
    --cell-flagged-bg: #ffffcc;
    --cell-mine-bg: #dc143c;
    --cell-mine-exploded-bg: #b22222;
    --info-bg: #ffe6e6;
    --topbar-bg: rgba(255, 245, 245, 0.95);
    --scroll-bg: rgba(255, 127, 80, 0.1);
    --scroll-thumb: #ff7f50;
}

/* パープルテーマ */
[data-theme="purple"] {
    --bg-gradient-start: #8e44ad;
    --bg-gradient-end: #7d3c98;
    --container-bg: rgba(244, 240, 247, 0.95);
    --text-color: #6c3483;
    --border-color: #d7bde2;
    --button-bg: #ebddf2;
    --button-border: #d7bde2;
    --button-active-bg: #8e44ad;
    --button-active-color: #ffffff;
    --cell-bg: #ebddf2;
    --cell-border: #d7bde2;
    --cell-hover-bg: #e2d1ea;
    --cell-revealed-bg: #ffffff;
    --cell-flagged-bg: #fff2cc;
    --cell-mine-bg: #e74c3c;
    --cell-mine-exploded-bg: #c0392b;
    --info-bg: #ebddf2;
    --topbar-bg: rgba(244, 240, 247, 0.95);
    --scroll-bg: rgba(142, 68, 173, 0.1);
    --scroll-thumb: #8e44ad;
}

/* キャンディーテーマ */
[data-theme="candy"] {
    --bg-gradient-start: #ff69b4;
    --bg-gradient-end: #ff1493;
    --container-bg: rgba(255, 240, 245, 0.95);
    --text-color: #8b008b;
    --border-color: #ffb6c1;
    --button-bg: #ffe4e1;
    --button-border: #ffb6c1;
    --button-active-bg: #ff69b4;
    --button-active-color: #ffffff;
    --cell-bg: #ffe4e1;
    --cell-border: #ffb6c1;
    --cell-hover-bg: #ffd6d6;
    --cell-revealed-bg: #ffffff;
    --cell-flagged-bg: #e6e6fa;
    --cell-mine-bg: #ff4500;
    --cell-mine-exploded-bg: #ff0000;
    --info-bg: #ffe4e1;
    --topbar-bg: rgba(255, 240, 245, 0.95);
    --scroll-bg: rgba(255, 105, 180, 0.1);
    --scroll-thumb: #ff69b4;
}

/* ネオンテーマ */
[data-theme="neon"] {
    --bg-gradient-start: #00ffff;
    --bg-gradient-end: #ff00ff;
    --container-bg: rgba(0, 0, 17, 0.95);
    --text-color: #00ffff;
    --border-color: #444;
    --button-bg: #001122;
    --button-border: #00ffff;
    --button-active-bg: #00ffff;
    --button-active-color: #000011;
    --cell-bg: #001122;
    --cell-border: #00ffff;
    --cell-hover-bg: #002244;
    --cell-revealed-bg: #000011;
    --cell-flagged-bg: #ff00ff;
    --cell-mine-bg: #ff0000;
    --cell-mine-exploded-bg: #ff6600;
    --info-bg: #001122;
    --topbar-bg: rgba(0, 0, 17, 0.95);
    --scroll-bg: rgba(0, 255, 255, 0.1);
    --scroll-thumb: #00ffff;
}

/* オータムテーマ */
[data-theme="autumn"] {
    --bg-gradient-start: #d2691e;
    --bg-gradient-end: #cd853f;
    --container-bg: rgba(250, 240, 230, 0.95);
    --text-color: #8b4513;
    --border-color: #deb887;
    --button-bg: #f5deb3;
    --button-border: #deb887;
    --button-active-bg: #d2691e;
    --button-active-color: #ffffff;
    --cell-bg: #f5deb3;
    --cell-border: #deb887;
    --cell-hover-bg: #f0d0a0;
    --cell-revealed-bg: #fffaf0;
    --cell-flagged-bg: #ffcccc;
    --cell-mine-bg: #b22222;
    --cell-mine-exploded-bg: #8b0000;
    --info-bg: #f5deb3;
    --topbar-bg: rgba(250, 240, 230, 0.95);
    --scroll-bg: rgba(210, 105, 30, 0.1);
    --scroll-thumb: #d2691e;
}

/* アイステーマ */
[data-theme="ice"] {
    --bg-gradient-start: #87ceeb;
    --bg-gradient-end: #4682b4;
    --container-bg: rgba(240, 248, 255, 0.95);
    --text-color: #191970;
    --border-color: #b0e0e6;
    --button-bg: #e6f3ff;
    --button-border: #b0e0e6;
    --button-active-bg: #87ceeb;
    --button-active-color: #ffffff;
    --cell-bg: #e6f3ff;
    --cell-border: #b0e0e6;
    --cell-hover-bg: #d9f0ff;
    --cell-revealed-bg: #ffffff;
    --cell-flagged-bg: #ffe4b5;
    --cell-mine-bg: #ff6347;
    --cell-mine-exploded-bg: #dc143c;
    --info-bg: #e6f3ff;
    --topbar-bg: rgba(240, 248, 255, 0.95);
    --scroll-bg: rgba(135, 206, 235, 0.1);
    --scroll-thumb: #87ceeb;
}

/* ベース要素 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    color: var(--text-color);
    line-height: 1.6;
}

/* トップバー */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--topbar-bg);
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 12px 0;
}

.top-bar-content {
    max-width: none;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section h1 {
    color: var(--text-color);
    font-size: 1.8rem;
    font-weight: bold;
    margin: 0;
}

/* 右上コントロールエリアの統一デザイン */
.controls-area {
    display: flex;
    align-items: center;
    gap: 15px;
}

.settings-dropdown,
.login-dropdown,
.user-dropdown {
    position: relative;
}

/* 統一されたコントロールボタンデザイン */
.control-toggle-btn {
    background: var(--button-bg);
    color: var(--text-color);
    border: 2px solid var(--button-border);
    padding: 10px 16px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    min-width: 110px;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.control-toggle-btn:hover {
    background: var(--button-active-bg);
    color: var(--button-active-color);
    border-color: var(--button-active-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.control-toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* ログイン済みユーザーボタンの特別スタイル */
.control-toggle-btn.user-logged-in {
    background: linear-gradient(135deg, var(--button-active-bg), rgba(102, 126, 234, 0.8));
    color: var(--button-active-color);
    border-color: var(--button-active-bg);
    font-weight: 600;
}

.control-toggle-btn.user-logged-in:hover {
    background: linear-gradient(135deg, var(--button-active-bg), rgba(102, 126, 234, 0.9));
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

/* 統一されたドロップダウンコンテンツ */
.dropdown-content {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--container-bg);
    border: 2px solid var(--button-border);
    border-radius: 15px;
    box-shadow: var(--shadow);
    padding: 25px;
    z-index: 1001;
    margin-top: 10px;
    min-width: 300px;
    backdrop-filter: blur(10px);
    animation: dropdownFadeIn 0.2s ease;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.settings-dropdown-content {
    min-width: 280px;
}

.login-dropdown-content {
    min-width: 320px;
}

.user-dropdown-content {
    min-width: 250px;
}

/* ドロップダウンの矢印（統一） */
.dropdown-content::before {
    content: '';
    position: absolute;
    top: -12px;
    right: 25px;
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-bottom: 12px solid var(--button-border);
    z-index: 1;
}

.dropdown-content::after {
    content: '';
    position: absolute;
    top: -10px;
    right: 26px;
    width: 0;
    height: 0;
    border-left: 11px solid transparent;
    border-right: 11px solid transparent;
    border-bottom: 11px solid var(--container-bg);
    z-index: 2;
}

/* 設定セクションのスタイル調整 */
.settings-section h4 {
    color: var(--text-color);
    margin-bottom: 20px;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    border-bottom: 2px solid var(--button-border);
    padding-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.settings-section h4::before {
    content: '⚙️';
    font-size: 18px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    gap: 15px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.setting-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.setting-item label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
    flex-shrink: 0;
}

.setting-item select {
    flex: 1;
    padding: 8px 12px;
    border: 2px solid var(--button-border);
    background: var(--button-bg);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 13px;
    min-width: 140px;
    transition: all 0.2s;
}

.setting-item select:focus {
    outline: none;
    border-color: var(--button-active-bg);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.setting-item input[type="checkbox"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    accent-color: var(--button-active-bg);
    transition: all 0.2s;
}

.setting-item input[type="checkbox"]:hover {
    transform: scale(1.1);
}

/* ログインフォームのスタイル調整 */
.login-section {
    position: relative;
}

.google-login-btn {
    width: 100%;
    background: linear-gradient(135deg, #4285f4, #3367d6);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 3px 10px rgba(66, 133, 244, 0.3);
}

.google-login-btn:hover {
    background: linear-gradient(135deg, #3367d6, #2952cc);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(66, 133, 244, 0.4);
}

.divider {
    text-align: center;
    margin: 18px 0;
    position: relative;
    color: var(--text-color);
    opacity: 0.6;
    font-size: 12px;
    font-weight: 500;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--button-border), transparent);
}

.divider span {
    background: var(--container-bg);
    padding: 0 15px;
    position: relative;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 6px;
}

.input-group input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

.login-buttons {
    display: flex;
    gap: 10px;
    margin: 20px 0 12px 0;
}

.auth-btn {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--button-border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.auth-btn.primary {
    background: linear-gradient(135deg, var(--button-active-bg), rgba(102, 126, 234, 0.9));
    color: var(--button-active-color);
    border-color: var(--button-active-bg);
}

.auth-btn.secondary {
    background: var(--button-bg);
    color: var(--text-color);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.auth-btn.primary:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.toggle-signup {
    text-align: center;
    margin-top: 12px;
}

.link-button {
    background: none;
    border: none;
    color: var(--button-active-bg);
    cursor: pointer;
    text-decoration: underline;
    font-size: 13px;
    padding: 8px;
    transition: all 0.2s;
}

.link-button:hover {
    opacity: 0.8;
    transform: translateY(-1px);
}

.guest-mode {
    text-align: center;
    margin-top: 18px;
    font-size: 11px;
    color: var(--text-color);
    opacity: 0.7;
    padding: 8px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 8px;
}

/* ユーザー情報パネル */
.user-info-panel {
    text-align: center;
}

.user-details {
    margin-bottom: 18px;
    padding: 12px;
    background: var(--info-bg);
    border-radius: 8px;
}

.user-email {
    font-size: 13px;
    color: var(--text-color);
    opacity: 0.8;
    font-weight: 500;
}

.logout-btn {
    width: 100%;
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 3px 10px rgba(220, 53, 69, 0.3);
}

.logout-btn:hover {
    background: linear-gradient(135deg, #c82333, #bd2130);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.4);
}

/* メッセージ表示 */
.message-display {
    position: fixed;
    top: 90px;
    left: 50%;
    transform: translateX(-50%);
    background: #17a2b8;
    color: white;
    padding: 15px 30px;
    border-radius: 25px;
    text-align: center;
    z-index: 999;
    animation: slideDown 0.3s ease;
    box-shadow: var(--shadow);
    font-weight: bold;
}

.message-display.error {
    background: #dc3545;
}

.message-display.success {
    background: #28a745;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* メインコンテンツ */
.main-content {
    margin-top: 90px;
    min-height: calc(100vh - 90px);
    padding: 20px 0;
}

/* 上部広告バナー */
.top-ad-banner {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.ad-space-banner {
    background: var(--container-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
    max-width: 970px;
    width: 100%;
}

.content-wrapper {
    display: flex;
    max-width: none;
    margin: 0;
    gap: 20px;
    padding: 0 20px;
}

/* サイドバー */
.sidebar {
    flex: 0 0 300px;
    position: sticky;
    top: 120px;
    height: fit-content;
}

/* ゲームエリア（フルワイド） */
.game-area {
    flex: 1;
    width: 100%;
    min-width: 0;
}

/* 難易度パネル */
.difficulty-panel {
    margin-bottom: 25px;
    text-align: center;
}

.difficulty {
    display: inline-flex;
    gap: 15px;
    padding: 8px;
    background: var(--container-bg);
    border-radius: 25px;
    box-shadow: var(--shadow);
}

.difficulty button {
    padding: 15px 25px;
    border: none;
    background: transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    font-weight: bold;
    color: var(--text-color);
    position: relative;
}

.difficulty button.active {
    background: var(--button-active-bg);
    color: var(--button-active-color);
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.difficulty button:hover:not(.active) {
    background: var(--info-bg);
    transform: translateY(-2px);
}

/* ゲーム情報パネル */
.game-info-panel {
    margin-bottom: 25px;
}

.game-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px;
    background: var(--container-bg);
    border-radius: 15px;
    box-shadow: var(--shadow);
    flex-wrap: wrap;
    gap: 20px;
}

.info-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.info-icon {
    font-size: 18px;
}

.info-label {
    font-weight: bold;
    color: var(--text-color);
}

.info-value {
    font-weight: bold;
    color: var(--button-active-bg);
    min-width: 40px;
    text-align: center;
    font-size: 16px;
}

.face-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.face-btn {
    font-size: 56px;
    background: var(--button-bg);
    border: 4px solid var(--button-border);
    border-radius: 50%;
    cursor: pointer;
    padding: 20px;
    transition: all 0.2s;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.face-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.face-btn:active {
    transform: scale(0.95);
}

.controls-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.reset-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.reset-btn:hover {
    background: #218838;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.reset-btn.game-over {
    background: #dc3545;
}

.reset-btn.won {
    background: #ffc107;
    color: #333;
}

.timer-display {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: bold;
    padding: 8px 16px;
    background: var(--info-bg);
    border-radius: 15px;
}

/* スクロール情報表示 */
.scroll-info {
    background: var(--container-bg);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    text-align: center;
}

.scroll-indicator {
    margin-bottom: 15px;
}

.scroll-indicator span {
    color: var(--text-color);
    font-weight: bold;
    font-size: 14px;
    display: block;
    margin-bottom: 10px;
}

.scroll-position {
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
}

.scroll-bar {
    width: 200px;
    height: 8px;
    background: var(--scroll-bg);
    border-radius: 4px;
    position: relative;
    border: 1px solid var(--button-border);
}

.scroll-thumb {
    height: 100%;
    background: var(--scroll-thumb);
    border-radius: 4px;
    transition: all 0.2s;
    min-width: 20px;
}

.scroll-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.scroll-btn {
    background: var(--button-bg);
    color: var(--text-color);
    border: 2px solid var(--button-border);
    padding: 10px 15px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 45px;
}

.scroll-btn:hover {
    background: var(--button-active-bg);
    color: var(--button-active-color);
    border-color: var(--button-active-bg);
    transform: translateY(-2px);
}

/* ゲームボードラッパー */
.game-board-wrapper {
    background: var(--container-bg);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.game-board-container {
    overflow-x: auto;
    overflow-y: hidden;
    position: relative;
    border-radius: 10px;
    /* カスタムスクロールバー */
    scrollbar-width: thin;
    scrollbar-color: var(--scroll-thumb) var(--scroll-bg);
}

.game-board-container::-webkit-scrollbar {
    height: 12px;
}

.game-board-container::-webkit-scrollbar-track {
    background: var(--scroll-bg);
    border-radius: 6px;
}

.game-board-container::-webkit-scrollbar-thumb {
    background: var(--scroll-thumb);
    border-radius: 6px;
    border: 2px solid var(--scroll-bg);
}

.game-board-container::-webkit-scrollbar-thumb:hover {
    background: var(--button-active-bg);
}

/* ゲームボード */
.game-board {
    display: grid;
    gap: 2px;
    background: var(--border-color);
    padding: 10px;
    border-radius: 10px;
    width: fit-content;
    margin: 0 auto;
}

.cell {
    width: 40px;
    height: 40px;
    background: var(--cell-bg);
    border: 2px solid var(--cell-border);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.2s;
    user-select: none;
    border-radius: 4px;
}

.cell:hover {
    background: var(--cell-hover-bg);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.cell.revealed {
    background: var(--cell-revealed-bg);
    cursor: default;
}

.cell.revealed:hover {
    transform: none;
    box-shadow: none;
}

.cell.flagged {
    background: var(--cell-flagged-bg);
    color: #e17055;
}

.cell.question {
    background: var(--cell-bg);
    color: #6c5ce7;
    font-size: 20px;
}

.cell.mine {
    background: var(--cell-mine-bg);
    color: white;
}

.cell.mine-exploded {
    background: var(--cell-mine-exploded-bg);
    color: white;
    animation: explode 0.6s;
}

@keyframes explode {
    0% {
        transform: scale(1) rotate(0deg);
    }

    25% {
        transform: scale(1.15) rotate(-3deg);
    }

    50% {
        transform: scale(1.25) rotate(3deg);
    }

    75% {
        transform: scale(1.1) rotate(-2deg);
    }

    100% {
        transform: scale(1) rotate(0deg);
    }
}

.cell.number-1 {
    color: #0984e3;
}

.cell.number-2 {
    color: #00b894;
}

.cell.number-3 {
    color: #e17055;
}

.cell.number-4 {
    color: #6c5ce7;
}

.cell.number-5 {
    color: #a29bfe;
}

.cell.number-6 {
    color: #fd79a8;
}

.cell.number-7 {
    color: #fdcb6e;
}

.cell.number-8 {
    color: #e84393;
}

/* ステータスメッセージ */
.status-message {
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    min-height: 30px;
    margin-bottom: 25px;
    color: var(--text-color);
    padding: 15px;
    border-radius: 15px;
    background: var(--container-bg);
    box-shadow: var(--shadow);
}

.status-message.won {
    color: #28a745;
    background: linear-gradient(45deg, rgba(40, 167, 69, 0.1), rgba(40, 167, 69, 0.05));
    border: 2px solid rgba(40, 167, 69, 0.3);
}

.status-message.lost {
    color: #dc3545;
    background: linear-gradient(45deg, rgba(220, 53, 69, 0.1), rgba(220, 53, 69, 0.05));
    border: 2px solid rgba(220, 53, 69, 0.3);
}

/* 統計セクション */
.stats-section {
    margin-top: 20px;
}

.stats-panel {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.online-stats,
.user-stats {
    flex: 1;
    background: var(--container-bg);
    border-radius: 15px;
    padding: 25px;
    min-width: 280px;
    box-shadow: var(--shadow);
}

.online-stats h3,
.user-stats h3 {
    margin-bottom: 20px;
    color: var(--text-color);
    text-align: center;
    font-size: 18px;
    border-bottom: 3px solid var(--button-border);
    padding-bottom: 15px;
}

.stats-grid {
    display: grid;
    gap: 15px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--button-border);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-item span:first-child {
    color: var(--text-color);
    font-weight: 600;
    font-size: 14px;
}

.stat-item span:last-child {
    color: var(--button-active-bg);
    font-weight: bold;
    font-size: 18px;
}

/* 広告スペース */
.ad-space {
    background: var(--container-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.ad-placeholder {
    padding: 15px;
    text-align: center;
}

.ad-placeholder.horizontal {
    padding: 10px 20px;
}

.ad-label {
    font-size: 10px;
    color: var(--text-color);
    opacity: 0.5;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sample-ad {
    background: linear-gradient(45deg, var(--info-bg), var(--scroll-bg));
    border: 2px dashed var(--button-border);
    border-radius: 8px;
    padding: 20px;
    color: var(--text-color);
    opacity: 0.7;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    transition: all 0.3s;
}

.sample-ad:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.sample-ad.horizontal {
    min-height: 70px;
    flex-direction: row;
    gap: 15px;
}

.footer-ad {
    background: var(--container-bg);
    margin: 40px 0 0 0;
    padding: 25px 0;
    box-shadow: var(--shadow);
}

.ad-space-footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* フッター */
.site-footer {
    text-align: center;
    padding: 1rem;
    background-color: var(--container-bg);
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

.site-footer p {
    color: var(--text-color);
    font-size: 0.9rem;
}

.site-footer a {
    color: var(--button-active-bg);
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-footer a:hover {
    color: var(--button-active-color);
    text-decoration: underline;
}

/* パスワードフィールドグループのスタイル */
.password-groups {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.password-groups .input-group {
    margin-bottom: 0;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 4px;
    font-size: 14px;
    color: var(--text-color);
}

.input-group input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

/* アカウント設定セクション */
.account-settings {
    margin: 20px 0;
    padding: 15px;
    background: var(--container-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.settings-title {
    font-size: 16px;
    margin: 0 0 15px 0;
    color: var(--text-color);
}

.danger-zone {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.danger-zone h4 {
    color: #dc3545;
    font-size: 14px;
    margin: 0 0 10px 0;
}

.update-btn {
    width: 100%;
    background: linear-gradient(135deg, #28a745, #218838);
    color: white;
    border: none;
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
    margin: 10px 0;
    font-size: 14px;
}

.delete-account-btn {
    width: 100%;
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
    border: none;
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.delete-account-btn:hover {
    background: linear-gradient(135deg, #c82333, #bd2130);
}

/* レスポンシブデザイン */
@media (max-width: 1400px) {
    .sidebar {
        flex: 0 0 250px;
    }
}

@media (max-width: 1200px) {
    .sidebar {
        display: none;
    }

    .content-wrapper {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        padding: 0 15px;
    }

    .logo-section h1 {
        font-size: 1.4rem;
    }

    .controls-area {
        gap: 10px;
    }

    .control-toggle-btn {
        padding: 8px 12px;
        font-size: 13px;
        min-width: 90px;
    }

    .dropdown-content {
        right: -30px;
        min-width: 280px;
        padding: 20px;
    }

    .settings-dropdown-content {
        min-width: 270px;
    }

    .login-dropdown-content {
        min-width: 300px;
    }

    .content-wrapper {
        padding: 0 15px;
    }

    .game-info {
        flex-direction: column;
        text-align: center;
        gap: 20px;
        padding: 20px;
    }

    .info-group {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 20px;
    }

    .stats-panel {
        flex-direction: column;
    }

    .cell {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }

    .face-btn {
        font-size: 42px;
        width: 80px;
        height: 80px;
        padding: 15px;
    }

    .difficulty {
        flex-direction: column;
        gap: 8px;
    }

    .difficulty button {
        padding: 12px 20px;
        width: 200px;
    }
}

@media (max-width: 480px) {
    .main-content {
        margin-top: 80px;
    }

    .top-bar {
        padding: 6px 0;
    }

    .logo-section h1 {
        font-size: 1.1rem;
    }

    .controls-area {
        gap: 8px;
    }

    .control-toggle-btn {
        padding: 6px 10px;
        font-size: 12px;
        min-width: 70px;
    }

    .dropdown-content {
        right: -80px;
        min-width: 260px;
        padding: 20px;
    }

    .settings-dropdown-content {
        min-width: 250px;
    }

    .login-dropdown-content {
        min-width: 280px;
    }

    .setting-item {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .setting-item label {
        text-align: left;
    }

    .setting-item select {
        min-width: unset;
    }

    .cell {
        width: 32px;
        height: 32px;
        font-size: 13px;
    }

    .face-btn {
        font-size: 36px;
        width: 70px;
        height: 70px;
        padding: 12px;
    }
}