/* ベース設定 */
:root {
    /* カラーパレット - ライトモード (Discord風) */
    --primary-color: #5865F2;
    --primary-dark: #4752C4;
    --primary-light: #E8E9FD;
    --primary-gradient: linear-gradient(135deg, #5865F2 0%, #4752C4 100%);
    --secondary-color: #2E3267;
    --secondary-light: #E9E4F9;
    --success-color: #3BA55C;
    --success-light: #ECFDF3;
    --warning-color: #FAA61A;
    --warning-light: #FFF5E9;
    --danger-color: #ED4245;
    --danger-light: #FDECEC;
    --info-color: #3E93EC;
    --info-light: #ECF4FD;
    --dark-color: #23272A;
    --text-color: #2E3338;
    --text-secondary: #747F8D;
    --text-light: #96989D;
    --text-muted: #B9BBBE;
    --bg-color: #F2F3F5;
    --bg-light: #FFFFFF;
    --bg-dark: #EBEDEF;
    --sidebar-bg: #FFFFFF;
    --card-bg: #FFFFFF;
    --border-color: #DCDDDE;
    --border-light: #EBEDEF;
    
    /* 効果 */
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 16px rgba(88, 101, 242, 0.1);
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* レイアウト */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --header-height: 64px;
    --container-padding: 30px;
    
    /* アニメーション */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-fast: all 0.15s cubic-bezier(0.25, 0.8, 0.25, 1);
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 14px;
    line-height: 1.5;
  }
  
  ul {
    list-style: none;
  }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  button {
    cursor: pointer;
    background: none;
    border: none;
    outline: none;
  }
  
  /* アプリレイアウト */
  .app-container {
    display: flex;
    min-height: 100vh;
  }
  
  /* サイドバー */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    transition: var(--transition);
    z-index: 1000;
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
  }
  
  .sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
  }
  
  .sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
  }
  
  .logo {
    height: 30px;
    transition: var(--transition);
  }
  
  .sidebar.collapsed .logo {
    display: none;
  }
  
  .collapse-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    color: var(--text-light);
    border-radius: 50%;
    transition: var(--transition);
  }
  
  .collapse-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .sidebar-nav {
    padding: 20px 0;
    flex: 1;
    overflow-y: auto;
  }
  
  .sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
  }
  
  .theme-switch {
    margin-bottom: 16px;
  }
  
  .theme-toggle-btn {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 10px;
    border-radius: var(--radius);
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition);
  }
  
  .theme-toggle-btn i {
    margin-right: 12px;
  }
  
  .theme-toggle-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .sidebar-info {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .sidebar-help {
    display: flex;
    align-items: center;
    margin-top: 8px;
    color: var(--primary-color);
  }
  
  .sidebar-help i {
    margin-right: 8px;
  }
  
  .sidebar-nav ul li {
    position: relative;
    margin-bottom: 8px;
    padding: 0 16px;
  }
  
  .sidebar-nav ul li a {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: var(--text-color);
    transition: var(--transition);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
  }
  
  .sidebar-nav ul li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
  }
  
  .sidebar-nav ul li a i {
    font-size: 20px;
    min-width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  
  .sidebar-nav ul li a span {
    margin-left: 10px;
    white-space: nowrap;
    opacity: 1;
    transition: var(--transition);
    font-weight: 500;
  }
  
  .sidebar.collapsed .sidebar-nav ul li a span {
    opacity: 0;
    width: 0;
  }
  
  .sidebar-nav ul li a:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
  
  .sidebar-nav ul li.active a {
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
  }
  
  .sidebar-nav ul li.active a::before {
    width: 4px;
    opacity: 1;
  }
  
  .sidebar-nav ul li a .menu-tooltip {
    position: absolute;
    left: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-gradient);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius);
    font-size: 12px;
    font-weight: 500;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 10;
    pointer-events: none;
  }
  
  .sidebar.collapsed .sidebar-nav ul li a:hover .menu-tooltip {
    opacity: 1;
    visibility: visible;
  }
  
  /* メインコンテンツ */
  .main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    margin-left: var(--sidebar-width);
    transition: var(--transition);
  }
  
  .sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed-width);
  }
  
  /* トップヘッダー */
  .top-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    z-index: 990;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
  }
  
  .header-left {
    display: flex;
    align-items: center;
  }
  
  .mobile-toggle-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text-color);
    margin-right: 15px;
    transition: var(--transition);
  }
  
  .mobile-toggle-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .search-container {
    display: flex;
    align-items: center;
    background-color: var(--bg-color);
    border-radius: 20px;
    padding: 8px 15px;
    width: 300px;
  }
  
  .search-container i {
    color: var(--text-light);
    margin-right: 8px;
  }
  
  .search-input {
    border: none;
    background: none;
    outline: none;
    width: 100%;
    color: var(--text-color);
  }
  
  .header-actions {
    display: flex;
    align-items: center;
  }
  
  .header-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-light);
    margin-left: 5px;
    border-radius: 50%;
    transition: var(--transition);
  }
  
  .header-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .notification-badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: var(--danger-color);
    color: white;
    font-size: 10px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .user-profile {
    position: relative;
    display: flex;
    align-items: center;
    margin-left: 15px;
    padding: 5px 10px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
  }
  
  .user-profile:hover {
    background-color: var(--primary-light);
  }
  
  .profile-img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
  }
  
  .user-info {
    margin: 0 10px;
    white-space: nowrap;
  }
  
  .user-name {
    font-weight: 600;
    font-size: 14px;
  }
  
  .user-role {
    font-size: 12px;
    color: var(--text-light);
  }
  
  /* プロファイルドロップダウン */
  .profile-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 280px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 1000;
    overflow: hidden;
  }
  
  .user-profile.active .profile-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .dropdown-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
  }
  
  .dropdown-user-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
  }
  
  .dropdown-user-email {
    font-size: 13px;
    opacity: 0.9;
  }
  
  .dropdown-body {
    padding: 12px 0;
  }
  
  .dropdown-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition-fast);
    cursor: pointer;
  }
  
  .dropdown-item:hover {
    background-color: var(--bg-light);
    transform: translateX(4px);
  }
  
  .dropdown-item i {
    width: 20px;
    margin-right: 12px;
    font-size: 14px;
    color: var(--text-light);
  }
  
  .dropdown-item span {
    font-size: 14px;
    font-weight: 500;
  }
  
  .dropdown-divider {
    height: 1px;
    background-color: var(--border-light);
    margin: 8px 0;
  }
  
  .logout-item {
    color: var(--danger-color);
  }
  
  .logout-item:hover {
    background-color: var(--danger-light);
    color: var(--danger-color);
  }
  
  .logout-item i {
    color: var(--danger-color);
  }
  
  /* ページコンテンツ */
  .page-content {
    flex: 1;
    padding: 20px 30px 40px;
    overflow-y: auto;
  }
  
  .page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
  }
  
  .page-title h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
  }
  
  .page-title p {
    color: var(--text-light);
    max-width: 600px;
  }
  
  .page-actions {
    display: flex;
    gap: 12px;
  }
  
  /* ボタンスタイル */
  .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transform: translateZ(0);
    white-space: nowrap;
  }
  
  .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1);
    z-index: 1;
  }
  
  .btn:hover::before {
    transform: translateY(0);
  }
  
  .btn span, .btn i {
    position: relative;
    z-index: 2;
  }
  
  .primary-btn {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.2);
  }
  
  .primary-btn:hover {
    box-shadow: 0 6px 16px rgba(88, 101, 242, 0.3);
    transform: translateY(-2px);
  }
  
  .primary-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(88, 101, 242, 0.2);
  }
  
  .primary-btn:disabled {
    background: linear-gradient(135deg, #A0A6E5 0%, #9AA0E0 100%);
    cursor: not-allowed;
    box-shadow: none;
  }
  
  .primary-btn:disabled:hover {
    transform: none;
    box-shadow: none;
  }
  
  .secondary-btn {
    background-color: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
  }
  
  .secondary-btn:hover {
    background-color: var(--bg-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
  }
  
  .secondary-btn:active {
    transform: translateY(0);
  }
  
  .secondary-btn:disabled {
    color: var(--text-muted);
    background-color: var(--bg-light);
    border-color: var(--border-color);
    cursor: not-allowed;
  }
  
  .secondary-btn:disabled:hover {
    transform: none;
    border-color: var(--border-color);
    color: var(--text-muted);
  }
  
  .text-btn {
    color: var(--primary-color);
    padding: 6px 12px;
    background: transparent;
    position: relative;
  }
  
  .text-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
  }
  
  .text-btn:hover {
    background-color: var(--primary-light);
  }
  
  .text-btn:hover::after {
    width: 100%;
  }
  
  .text-danger {
    color: var(--danger-color);
  }
  
  .text-danger::after {
    background-color: var(--danger-color);
  }
  
  .text-danger:hover {
    background-color: var(--danger-light);
  }
  
  .danger-btn {
    background-color: var(--danger-color);
    color: white;
    box-shadow: 0 4px 12px rgba(237, 66, 69, 0.2);
  }
  
  .danger-btn:hover {
    box-shadow: 0 6px 16px rgba(237, 66, 69, 0.3);
    transform: translateY(-2px);
  }
  
  .btn i {
    margin-right: 8px;
    font-size: 16px;
  }
  
  .mini-btn {
    padding: 6px 12px;
    font-size: 12px;
  }
  
  /* アポイントセクション共通 */
  .appointment-section {
    display: none;
  }
  
  .appointment-section.active {
    display: block;
  }
  
  .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }
  
  .section-header h2 {
    font-size: 20px;
    font-weight: 600;
  }
  
  .back-btn {
    display: flex;
    align-items: center;
  }
  
  .back-btn i {
    margin-right: 5px;
  }
  
  /* アポイント概要カード */
  .overview-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
  }
  
  .overview-card {
    position: relative;
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    padding: 20px;
    display: flex;
    align-items: center;
    transition: var(--transition);
  }
  
  .overview-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
  }
  
  .overview-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    font-size: 24px;
    margin-right: 20px;
  }
  
  .overview-data {
    display: flex;
    flex-direction: column;
  }
  
  .overview-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.2;
  }
  
  .overview-label {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 5px;
  }
  
  /* ビュー切り替え */
  .view-controls {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    overflow: hidden;
    margin-bottom: 20px;
  }
  
  .view-tabs {
    display: flex;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
  }
  
  .view-tab {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    color: var(--text-light);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    font-weight: 600;
  }
  
  .view-tab i {
    margin-right: 10px;
    font-size: 16px;
  }
  
  .view-tab:hover {
    color: var(--primary-color);
    background-color: var(--primary-light);
  }
  
  .view-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background-color: var(--bg-light);
  }
  
  .view-filters {
    padding: 15px 20px;
    display: flex;
    gap: 15px;
  }
  
  .filter-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-light);
    color: var(--text-color);
    outline: none;
    transition: var(--transition);
    min-width: 150px;
  }
  
  .filter-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(88, 101, 242, 0.1);
  }
  
  /* ビューコンテンツ */
  .view-content {
    display: none;
  }
  
  .view-content.active {
    display: block;
  }
  
  /* カレンダービュー */
  .calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 10px 0;
  }
  
  .calendar-navigation {
    display: flex;
    align-items: center;
  }
  
  .calendar-navigation h2 {
    margin: 0 15px;
    font-size: 18px;
    font-weight: 600;
  }
  
  .nav-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--bg-light);
    color: var(--text-color);
    border: 1px solid var(--border-light);
    transition: var(--transition);
  }
  
  .nav-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
    transform: translateY(-2px);
  }
  
  /* カレンダーコントロール */
  .calendar-controls {
    display: flex;
    align-items: center;
    gap: 15px;
  }

  /* Google Calendar連携ボタン */
  .google-calendar-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: #fff;
    color: #4285f4;
    border: 1px solid #4285f4;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .google-calendar-btn:hover {
    background-color: #4285f4;
    color: #fff;
  }

  .google-calendar-btn.connected {
    background-color: #4285f4;
    color: #fff;
  }

  .google-calendar-btn.connected:hover {
    background-color: #3367d6;
    border-color: #3367d6;
  }

  .google-calendar-btn i {
    font-size: 16px;
  }

  /* Gmail連携コンテナ */
  .gmail-connect-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background-color: #f8f9fa;
  }

  .gmail-connect-content {
    text-align: center;
    padding: 40px;
  }

  .gmail-connect-content i {
    color: #ea4335;
    margin-bottom: 20px;
  }

  .gmail-connect-content h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
  }

  .gmail-connect-content p {
    color: #666;
    margin-bottom: 20px;
  }

  .gmail-connect-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background-color: #fff;
    color: #ea4335;
    border: 2px solid #ea4335;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
  }

  .gmail-connect-btn:hover {
    background-color: #ea4335;
    color: white;
  }

  .gmail-connect-btn i {
    font-size: 18px;
  }

  .calendar-view-options {
    display: flex;
    background-color: var(--bg-color);
    border-radius: var(--radius);
    padding: 3px;
    border: 1px solid var(--border-light);
  }
  
  .view-option {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-light);
    transition: var(--transition);
    font-weight: 500;
  }
  
  .view-option.active {
    background-color: var(--card-bg);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
  }
  
  .calendar-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }
  
  .calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background-color: var(--bg-color);
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
  }
  
  .calendar-weekdays div {
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
  }
  
  .calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-auto-rows: minmax(120px, auto);
  }
  
  .calendar-day {
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    padding: 10px;
    min-height: 120px;
    position: relative;
    background-color: var(--bg-light);
    transition: var(--transition);
  }
  
  .calendar-day:hover {
    background-color: var(--bg-color);
  }
  
  .calendar-day.other-month {
    background-color: var(--bg-dark);
    color: var(--text-light);
  }
  
  .calendar-day.today {
    background-color: var(--primary-light);
  }
  
  .calendar-day.current-day {
    border: 2px solid var(--primary-color);
  }
  
  .day-number {
    font-weight: 600;
    margin-bottom: 8px;
    text-align: right;
  }
  
  .appointment-item {
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 12px;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .appointment-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
  
  .appointment-item.confirmed {
    background-color: var(--primary-color);
  }
  
  .appointment-item.pending {
    background-color: var(--warning-color);
  }
  
  .appointment-item.completed {
    background-color: var(--success-color);
  }
  
  .appointment-item.cancelled {
    background-color: var(--text-light);
  }
  
  /* Google Calendar イベント用スタイル */
  .appointment.google-event {
    background-color: #e8f0fe !important;
    color: #1967d2 !important;
    border-left: 3px solid #4285f4;
    padding-left: 5px;
  }
  
  .appointment.google-event:hover {
    background-color: #d2e3fc !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(66, 133, 244, 0.3);
  }
  
  .appointment.google-event .appointment-time {
    display: flex;
    align-items: center;
    font-weight: 600;
  }
  
  .item-time {
    font-weight: 600;
    margin-bottom: 2px;
  }
  
  .item-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .more-indicator {
    font-size: 11px;
    text-align: center;
    color: var(--text-secondary);
    background-color: var(--bg-color);
    padding: 3px;
    border-radius: var(--radius-sm);
    margin-top: 5px;
  }

  /* 週表示・日表示のカレンダーグリッド */
  .calendar-grid.week-view,
  .calendar-grid.day-view {
    display: grid;
    grid-template-columns: 80px 1fr;
    grid-auto-rows: 60px;
    background-color: var(--bg-light);
  }

  .calendar-grid.week-view {
    grid-template-columns: 80px repeat(7, 1fr);
  }

  /* 時間軸 */
  .time-slot {
    grid-column: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--text-secondary);
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    background-color: var(--bg-color);
  }

  /* 週表示のヘッダー */
  .week-header {
    grid-column: 2 / -1;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-bottom: 2px solid var(--border-color);
  }

  .week-header-cell {
    padding: 10px;
    text-align: center;
    background-color: var(--bg-color);
    border-right: 1px solid var(--border-light);
  }

  .week-header-cell:last-child {
    border-right: none;
  }

  .week-day-name {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
  }

  .week-day-number {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    margin-top: 5px;
  }

  .week-header-cell.today {
    background-color: var(--primary-light);
  }

  .week-header-cell.today .week-day-number {
    color: var(--primary-color);
  }

  /* 日表示のヘッダー */
  .day-header {
    grid-column: 2;
    padding: 15px;
    background-color: var(--bg-color);
    border-bottom: 2px solid var(--border-color);
    text-align: center;
  }

  .day-header-date {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
  }

  .day-header-weekday {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 5px;
  }

  /* 時間スロットセル */
  .time-slot-cell {
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    position: relative;
    padding: 2px;
  }

  .time-slot-cell:hover {
    background-color: var(--bg-dark);
  }

  /* 週表示・日表示のアポイント */
  .appointment-block {
    position: absolute;
    left: 2px;
    right: 2px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: white;
    cursor: pointer;
    overflow: hidden;
    z-index: 10;
    box-shadow: var(--shadow-sm);
  }

  .appointment-block:hover {
    z-index: 20;
    box-shadow: var(--shadow);
  }

  .appointment-block.confirmed {
    background-color: var(--primary-color);
  }

  .appointment-block.pending {
    background-color: var(--warning-color);
  }

  .appointment-block.completed {
    background-color: var(--success-color);
  }

  .appointment-block.cancelled {
    background-color: var(--text-light);
  }

  .appointment-block.google-event {
    background-color: #4285f4;
    border-left: 3px solid #1967d2;
  }

  .appointment-block-time {
    font-weight: 600;
    font-size: 11px;
    margin-bottom: 2px;
  }

  .appointment-block-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  /* 現在時刻インジケーター */
  .current-time-indicator {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--danger-color);
    z-index: 30;
    pointer-events: none;
  }

  .current-time-indicator::before {
    content: '';
    position: absolute;
    left: -5px;
    top: -4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--danger-color);
  }
  
  /* リストビュー */
  .appointments-list {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    overflow: hidden;
    margin-bottom: 20px;
  }
  
  .list-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
  }
  
  .list-row {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
  }
  
  .list-row:last-child {
    border-bottom: none;
  }
  
  .list-row:hover {
    background-color: var(--bg-color);
  }
  
  .list-cell {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    position: relative;
  }
  
  .header-cell {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
  }
  
  .checkbox-cell {
    width: 40px;
    justify-content: center;
    padding: 0;
  }
  
  .status-cell {
    width: 100px;
  }
  
  .date-cell {
    width: 160px;
  }
  
  .company-cell {
    flex: 1;
  }
  
  .contact-cell {
    width: 200px;
  }
  
  .source-cell {
    width: 150px;
  }
  
  .assigned-cell {
    width: 160px;
  }
  
  .actions-cell {
    width: 120px;
    justify-content: flex-end;
  }
  
  .date-section {
    padding: 10px 16px;
    background-color: var(--bg-color);
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    border-top: 1px solid var(--border-color);
  }
  
  .date-section:first-child {
    border-top: none;
  }
  
  .date-time {
    display: flex;
    flex-direction: column;
  }
  
  .time {
    font-weight: 600;
    color: var(--text-color);
  }
  
  .duration {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .company-info {
    display: flex;
    flex-direction: column;
  }
  
  .company-name {
    font-weight: 600;
    color: var(--text-color);
  }
  
  .meeting-type {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    margin-top: 3px;
  }
  
  .meeting-type i {
    margin-right: 5px;
    color: var(--primary-color);
  }
  
  .contact-info {
    display: flex;
    flex-direction: column;
  }
  
  .contact-name {
    font-weight: 500;
  }
  
  .contact-position {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .source-info {
    display: flex;
    flex-direction: column;
  }
  
  .source-type {
    font-weight: 500;
  }
  
  .source-date {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .assigned-user {
    display: flex;
    align-items: center;
  }
  
  .user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-right: 10px;
    object-fit: cover;
  }
  
  .user-avatar-sm {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
  }
  
  .action-buttons {
    display: flex;
    gap: 8px;
  }
  
  .action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    color: var(--text-light);
    transition: var(--transition);
    position: relative;
  }
  
  .action-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .action-btn.cancel-btn:hover {
    background-color: var(--danger-light);
    color: var(--danger-color);
  }
  
  .action-btn[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--dark-color);
    color: white;
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 10;
  }
  
  .action-btn[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
  }
  
  .status-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius);
    text-align: center;
    min-width: 80px;
  }
  
  .status-badge.large {
    font-size: 14px;
    padding: 6px 16px;
    min-width: 100px;
  }
  
  .status-badge.confirmed {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .status-badge.pending {
    background-color: var(--warning-light);
    color: var(--warning-color);
  }
  
  .status-badge.completed {
    background-color: var(--success-light);
    color: var(--success-color);
  }
  
  .status-badge.cancelled {
    background-color: var(--bg-dark);
    color: var(--text-light);
  }
  
  /* ページネーション */
  .pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    margin-top: 20px;
    margin-bottom: 20px;
  }
  
  .pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    color: var(--text-color);
    transition: var(--transition);
    font-weight: 500;
  }
  
  .pagination-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
  }
  
  .pagination-btn.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
  }
  
  .pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  .pagination-info {
    margin-left: 15px;
    color: var(--text-light);
    font-size: 13px;
  }
  
  /* バルクアクション */
  .bulk-actions {
    display: flex;
    align-items: center;
    background-color: var(--bg-light);
    padding: 12px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
  }
  
  .selected-count {
    margin-right: 15px;
    font-weight: 500;
    color: var(--text-secondary);
  }
  
  .bulk-action-btn {
    margin-left: 10px;
  }
  
  /* カンバンビュー */
  .kanban-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
  }
  
  .kanban-column {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }
  
  .kanban-header {
    padding: 16px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
  }
  
  .kanban-header h3 {
    display: flex;
    align-items: center;
    font-size: 16px;
    font-weight: 600;
  }
  
  .kanban-header .count {
    display: inline-block;
    background-color: var(--bg-light);
    border-radius: 20px;
    padding: 2px 8px;
    font-size: 12px;
    margin-left: 10px;
  }
  
  .kanban-header.pending {
    border-top: 3px solid var(--warning-color);
  }
  
  .kanban-header.confirmed {
    border-top: 3px solid var(--primary-color);
  }
  
  .kanban-header.follow-up {
    border-top: 3px solid var(--info-color);
  }
  
  .kanban-header.done {
    border-top: 3px solid var(--success-color);
  }
  
  .kanban-body {
    padding: 16px;
    max-height: 600px;
    overflow-y: auto;
  }
  
  .kanban-card {
    background-color: var(--bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    margin-bottom: 15px;
    padding: 12px;
    transition: var(--transition);
    cursor: pointer;
  }
  
  .kanban-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
  }
  
  .card-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
  }
  
  .card-company {
    font-weight: 600;
    color: var(--text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
  }
  
  .card-date {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .card-body {
    margin-bottom: 10px;
  }
  
  .card-contact {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .card-meeting {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
  }
  
  .card-meeting i {
    margin-right: 5px;
    color: var(--primary-color);
  }
  
  .card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: var(--text-light);
    border-top: 1px solid var(--border-light);
    padding-top: 8px;
  }
  
  .card-source {
    background-color: var(--bg-color);
    padding: 2px 8px;
    border-radius: 20px;
  }
  
  /* アポイント詳細 */
  .detail-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }
  
  .detail-header {
    background: var(--primary-gradient);
    color: white;
    padding: 30px;
    display: flex;
    position: relative;
  }
  
  .appointment-company-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    margin-right: 30px;
    font-size: 36px;
  }
  
  .appointment-info {
    flex: 1;
  }
  
  .appointment-info h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 15px;
  }
  
  .appointment-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
  }
  
  .meta-item {
    display: flex;
    align-items: center;
  }
  
  .meta-item i {
    margin-right: 8px;
  }
  
  .detail-status {
    position: absolute;
    top: 30px;
    right: 30px;
  }
  
  .detail-body {
    display: flex;
    gap: 30px;
    padding: 30px;
  }
  
  .detail-sections {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 25px;
  }
  
  .detail-sidebar {
    width: 300px;
  }
  
  .detail-section {
    background-color: var(--bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }
  
  .section-title {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
  }
  
  .section-title i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 18px;
  }
  
  .section-title h3 {
    font-size: 16px;
    font-weight: 600;
  }
  
  .section-content {
    padding: 20px;
  }
  
  .info-group {
    margin-bottom: 15px;
  }
  
  .info-group:last-child {
    margin-bottom: 0;
  }
  
  .info-label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 5px;
  }
  
  .info-value {
    color: var(--text-color);
  }
  
  .info-value p {
    margin-bottom: 10px;
  }
  
  .info-value p:last-child {
    margin-bottom: 0;
  }
  
  .participant {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
  }
  
  .participant:last-child {
    margin-bottom: 0;
  }
  
  .participant-info {
    display: flex;
    flex-direction: column;
  }
  
  .participant-name {
    font-weight: 500;
  }
  
  .participant-role {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .meeting-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .meeting-link a {
    color: var(--primary-color);
    text-decoration: underline;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .copy-btn {
    white-space: nowrap;
    padding: 5px 10px;
  }
  
  .check-list {
    padding-left: 25px;
    position: relative;
  }
  
  .check-list li {
    position: relative;
    margin-bottom: 8px;
    padding-left: 10px;
  }
  
  .check-list li:last-child {
    margin-bottom: 0;
  }
  
  .check-list li::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: -20px;
    color: var(--success-color);
  }
  
  .document-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .document-link {
    display: flex;
    align-items: center;
    color: var(--primary-color);
    padding: 8px 12px;
    border-radius: var(--radius);
    background-color: var(--primary-light);
    transition: var(--transition);
  }
  
  .document-link:hover {
    background-color: var(--primary-color);
    color: white;
  }
  
  .document-link i {
    margin-right: 10px;
  }
  
  .assigned-users {
    display: flex;
    gap: 15px;
  }
  
  .assigned-user-card {
    display: flex;
    align-items: center;
    background-color: var(--bg-color);
    padding: 10px;
    border-radius: var(--radius);
    width: 200px;
  }
  
  .user-details {
    margin-left: 10px;
  }
  
  .user-name {
    font-weight: 500;
  }
  
  .user-role {
    font-size: 12px;
    color: var(--text-light);
  }
  
  /* タイムライン */
  .timeline {
    position: relative;
    padding-left: 30px;
  }
  
  .timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 7px;
    width: 2px;
    background-color: var(--border-color);
  }
  
  .timeline-item {
    position: relative;
    margin-bottom: 25px;
  }
  
  .timeline-item:last-child {
    margin-bottom: 0;
  }
  
  .timeline-icon {
    position: absolute;
    left: -30px;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 8px;
  }
  
  .timeline-content {
    background-color: var(--bg-color);
    border-radius: var(--radius);
    padding: 15px;
  }
  
  .timeline-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
  }
  
  .timeline-title {
    font-weight: 600;
  }
  
  .timeline-date {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .timeline-body {
    font-size: 14px;
  }
  
  /* アクションカード */
  .action-card, .reminder-card, .notes-card {
    background-color: var(--bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
    margin-bottom: 20px;
  }
  
  .action-header, .reminder-header, .notes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
  }
  
  .action-header h3, .reminder-header h3, .notes-header h3 {
    font-size: 16px;
    font-weight: 600;
  }
  
  .action-buttons-vertical {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .action-button {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border-radius: var(--radius);
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    font-weight: 500;
  }
  
  .action-button:hover {
    background-color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
  
  .action-button i {
    margin-right: 10px;
    color: var(--text-secondary);
    width: 20px;
    text-align: center;
  }
  
  .action-button.primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
  }
  
  .action-button.primary i {
    color: white;
  }
  
  .action-button.danger {
    color: var(--danger-color);
  }
  
  .action-button.danger i {
    color: var(--danger-color);
  }
  
  .action-button.danger:hover {
    background-color: var(--danger-light);
    border-color: var(--danger-color);
  }
  
  /* リマインダー */
  .reminder-list {
    padding: 15px 20px;
  }
  
  .reminder-item {
    display: flex;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
  }
  
  .reminder-item:last-child {
    border-bottom: none;
  }
  
  .reminder-icon {
    margin-right: 15px;
    color: var(--primary-color);
    font-size: 16px;
  }
  
  .reminder-content {
    flex: 1;
  }
  
  .reminder-title {
    font-weight: 500;
    margin-bottom: 3px;
  }
  
  .reminder-time {
    font-size: 12px;
    color: var(--text-light);
  }
  
  .reminder-actions {
    display: flex;
    gap: 5px;
  }
  
  .reminder-action-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-light);
    transition: var(--transition);
  }
  
  .reminder-action-btn:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
  }
  
  .reminder-action-btn:last-child:hover {
    color: var(--danger-color);
  }
  
  /* メモ */
  .notes-content {
    padding: 20px;
  }
  
  .notes-content p {
    margin-bottom: 15px;
    line-height: 1.6;
  }
  
  .notes-content p:last-child {
    margin-bottom: 0;
  }
  
  /* 新規アポイント作成 */
  .new-appointment-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    padding: 30px;
  }
  
  .appointment-form {
    width: 100%;
  }
  
  .form-columns {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
  }
  
  .form-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
  }
  
  .form-section {
    background-color: var(--bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }
  
  .form-group {
    margin-bottom: 20px;
  }
  
  .form-group:last-child {
    margin-bottom: 0;
  }
  
  .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
  }
  
  .form-group .required {
    color: var(--danger-color);
  }
  
  .form-select, .form-input, .form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-light);
    color: var(--text-color);
    outline: none;
    transition: var(--transition);
  }
  
  .form-select:focus, .form-input:focus, .form-textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(88, 101, 242, 0.1);
  }
  
  .form-textarea {
    resize: vertical;
    min-height: 100px;
  }
  
  .form-hint {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-top: 5px;
  }
  
  .time-group {
    display: flex;
    gap: 15px;
  }
  
  .time-input {
    flex: 1;
  }
  
  .form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
  }
  
  /* カレンダー同期 */
  .sync-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    padding: 30px;
  }
  
  .sync-description {
    display: flex;
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--info-light);
    border-radius: var(--radius);
    color: var(--text-secondary);
  }
  
  .sync-description i {
    font-size: 24px;
    color: var(--info-color);
    margin-right: 15px;
  }
  
  .sync-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
  }
  
  .sync-card {
    display: flex;
    background-color: var(--bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    padding: 20px;
    transition: var(--transition);
  }
  
  .sync-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
  }
  
  .card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 20px;
    font-size: 30px;
    color: white;
  }
  
  .card-icon.google {
    background: linear-gradient(135deg, #4285F4 0%, #0F9D58 100%);
  }
  
  .card-icon.outlook {
    background: linear-gradient(135deg, #0078D4 0%, #28A8EA 100%);
  }
  
  .card-icon.timerex {
    background: linear-gradient(135deg, #7289DA 0%, #5865F2 100%);
  }
  
  .card-icon.ical {
    background: linear-gradient(135deg, #FF9500 0%, #FF2D55 100%);
  }
  
  .card-content {
    flex: 1;
  }
  
  .card-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
  }
  
  .card-content p {
    color: var(--text-secondary);
    margin-bottom: 15px;
  }
  
  .connection-status {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-weight: 500;
  }
  
  .connection-status i {
    margin-right: 8px;
  }
  
  .connection-status.connected {
    color: var(--success-color);
  }
  
  .connection-status.disconnected {
    color: var(--text-light);
  }
  
  .sync-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
  
  .ical-url-container {
    display: flex;
    margin: 10px 0;
  }
  
  .ical-url {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 12px;
    background-color: var(--bg-color);
    color: var(--text-secondary);
  }
  
  .ical-url-container .btn {
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 0;
  }
  
  .sync-settings {
    background-color: var(--bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }
  
  .settings-header {
    padding: 15px 20px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
  }
  
  .settings-header h3 {
    font-size: 16px;
    font-weight: 600;
  }
  
  .settings-form {
    padding: 20px;
  }
  
  /* トースト通知 */
  .toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
  }
  
  .toast {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border-radius: var(--radius);
    background-color: white;
    box-shadow: var(--shadow-lg);
    max-width: 350px;
    animation: slideIn 0.3s forwards;
  }
  
  @keyframes slideIn {
    from {
      transform: translateX(100%);
      opacity: 0;
    }
    to {
      transform: translateX(0);
      opacity: 1;
    }
  }
  
  .toast.success {
    border-left: 4px solid var(--success-color);
  }
  
  .toast.error {
    border-left: 4px solid var(--danger-color);
  }
  
  .toast.warning {
    border-left: 4px solid var(--warning-color);
  }
  
  .toast.info {
    border-left: 4px solid var(--info-color);
  }
  
  .toast-icon {
    margin-right: 15px;
    font-size: 20px;
  }
  
  .toast.success .toast-icon {
    color: var(--success-color);
  }
  
  .toast.error .toast-icon {
    color: var(--danger-color);
  }
  
  .toast.warning .toast-icon {
    color: var(--warning-color);
  }
  
  .toast.info .toast-icon {
    color: var(--info-color);
  }
  
  .toast-content {
    flex: 1;
  }
  
  .toast-title {
    font-weight: 600;
    margin-bottom: 5px;
  }
  
  .toast-message {
    color: var(--text-secondary);
    font-size: 13px;
  }
  
  .toast-close {
    color: var(--text-light);
    margin-left: 15px;
    cursor: pointer;
    transition: var(--transition);
  }
  
  .toast-close:hover {
    color: var(--text-color);
  }
  
  /* モーダル */
  .modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow: auto;
  }
  
  .modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .modal-content {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    width: 400px;
    max-width: 90%;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    animation: modalFadeIn 0.3s;
  }
  
  @keyframes modalFadeIn {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
  }
  
  .modal-header h2 {
    font-size: 18px;
    font-weight: 600;
  }
  
  .close-modal {
    font-size: 24px;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
  }
  
  .close-modal:hover {
    color: var(--danger-color);
  }
  
  .modal-body {
    padding: 20px;
  }
  
  .modal-footer {
    display: flex;
    justify-content: flex-end;
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    gap: 10px;
  }
  
  /* ダークモード */
  body.theme-dark {
    /* Discord風ダークテーマ */
    --primary-color: #7289DA;
    --primary-dark: #5F73BC;
    --primary-light: #414980;
    --primary-gradient: linear-gradient(135deg, #7289DA 0%, #5F73BC 100%);
    
    --text-color: #FFFFFF;
    --text-secondary: #B9BBBE;
    --text-light: #8E9297;
    --text-muted: #72767D;
    
    --bg-color: #36393F;
    --bg-light: #40444B;
    --bg-dark: #2F3136;
    
    --sidebar-bg: #2F3136;
    --card-bg: #40444B;
    
    --border-color: #202225;
    --border-light: #4F545C;
    
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 8px 16px rgba(114, 137, 218, 0.2);
  }
  
  /* ダークモード時のヘッダーとコントロール改善 */
  body.theme-dark .top-header {
    background-color: #202225 !important; /* Discord の暗めのバックグラウンド */
    border-bottom-color: #4F545C !important;
    backdrop-filter: none !important;
  }
  
  body.theme-dark .search-container {
    background-color: #202225;
  }
  
  body.theme-dark .search-input {
    color: #FFFFFF;
  }
  
  body.theme-dark .filter-select,
  body.theme-dark .form-select,
  body.theme-dark .form-input,
  body.theme-dark .form-textarea {
    background-color: #2F3136;
    border-color: #4F545C;
    color: #FFFFFF;
  }
  
  body.theme-dark .secondary-btn {
    background-color: #4F545C;
    border-color: #72767D;
    color: #FFFFFF;
  }
  
  body.theme-dark .secondary-btn:hover {
    background-color: #5D6269;
    border-color: #7289DA;
  }
  
  body.theme-dark .secondary-btn i {
    color: #FFFFFF;
  }
  
  body.theme-dark .sidebar-nav ul li.active a {
    background-color: #42464D; /* Discord アクティブ項目 */
    color: var(--primary-color);
  }
  
  body.theme-dark .sidebar-nav ul li a:hover {
    background-color: #42464D;
    color: var(--text-color);
  }
  
  body.theme-dark .calendar-day.today {
    background-color: var(--primary-light);
    color: #FFFFFF;
  }
  
  body.theme-dark .calendar-day.other-month {
    background-color: #2F3136;
    color: #72767D;
  }
  
  body.theme-dark .appointment-item {
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  }
  
  body.theme-dark .timeline::before {
    background-color: #4F545C;
  }
  
  body.theme-dark .ical-url {
    background-color: #2F3136;
    color: #B9BBBE;
  }
  
  /* レスポンシブ */
  @media (max-width: 1200px) {
    .form-columns {
      flex-direction: column;
    }
    
    .detail-body {
      flex-direction: column;
    }
    
    .detail-sidebar {
      width: 100%;
    }
    
    .sync-cards {
      grid-template-columns: 1fr;
    }
  }
  
  @media (max-width: 1024px) {
    .kanban-container {
      grid-template-columns: 1fr;
    }
    
    .overview-cards {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .calendar-day {
      min-height: 100px;
    }
  }
  
  @media (max-width: 768px) {
    :root {
      --container-padding: 15px;
    }
    
    .sidebar {
      transform: translateX(-100%);
      box-shadow: none;
    }
    
    .sidebar.open {
      transform: translateX(0);
      box-shadow: var(--shadow-lg);
    }
    
    .main-content {
      margin-left: 0;
    }
    
    .sidebar.collapsed + .main-content {
      margin-left: 0;
    }
    
    .top-header {
      padding: 0 15px;
    }
    
    .search-container {
      width: 200px;
    }
    
    .page-header {
      flex-direction: column;
    }
    
    .page-actions {
      margin-top: 15px;
      width: 100%;
    }
    
    .mobile-menu-overlay {
      display: block;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: rgba(0, 0, 0, 0.5);
      z-index: 990;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }
    
    .mobile-menu-overlay.active {
      opacity: 1;
      visibility: visible;
    }
    
    .mobile-toggle-btn {
      display: flex;
      margin-right: 15px;
    }
    
    .list-row {
      flex-direction: column;
      padding: 15px;
      border-bottom: 1px solid var(--border-light);
    }
    
    .list-cell {
      padding: 5px 0;
      justify-content: flex-start;
    }
    
    .header-cell {
      display: none;
    }
    
    .view-tabs {
      overflow-x: auto;
    }
    
    .view-tab {
      padding: 15px 10px;
      white-space: nowrap;
    }
    
    .view-filters {
      flex-direction: column;
    }
    
    .overview-cards {
      grid-template-columns: 1fr;
    }
    
    .calendar-day {
      min-height: 80px;
    }
    
    .calendar-weekdays {
      grid-template-columns: repeat(7, 40px);
    }
    
    .calendar-grid {
      grid-template-columns: repeat(7, 40px);
      overflow-x: auto;
    }
    
    .appointment-item {
      padding: 5px;
    }
    
    .item-title {
      display: none;
    }
    
    .detail-header {
      flex-direction: column;
      text-align: center;
      padding: 20px;
    }
    
    .appointment-company-logo {
      margin: 0 auto 20px;
    }
    
    .appointment-meta {
      justify-content: center;
    }
    
    .detail-status {
      position: static;
      margin-top: 20px;
    }
    
    .assigned-users {
      flex-direction: column;
    }
    
    .assigned-user-card {
      width: 100%;
    }
  }
  
  @media (max-width: 576px) {
    .user-info {
      display: none;
    }
    
    .page-content {
      padding: 15px;
    }
    
    .calendar-navigation h2 {
      font-size: 16px;
    }
    
    .calendar-view-options {
      display: none;
    }
    
    .calendar-container {
      overflow-x: auto;
    }
    
    .bulk-actions {
      flex-wrap: wrap;
    }
    
    .selected-count {
      width: 100%;
      margin-bottom: 10px;
    }
    
    .bulk-action-btn {
      margin: 5px;
    }
    
    .detail-body {
      padding: 15px;
    }
    
    .action-buttons-vertical {
      padding: 10px;
    }
  }
  /* メール返信プレビュー */
.email-preview-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.preview-title h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.preview-title p {
  color: var(--text-light);
}

.preview-list {
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

.no-previews-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 50px 20px;
  color: var(--text-light);
  text-align: center;
}

.no-previews-message i {
  font-size: 40px;
  color: var(--success-color);
  margin-bottom: 15px;
}

.preview-item {
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

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

.preview-item:hover {
  background-color: var(--bg-color);
}

.preview-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  cursor: pointer;
}

.preview-item-info {
  display: flex;
  flex-direction: column;
}

.preview-item-type {
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 5px;
}

.preview-item-time {
  font-size: 12px;
  color: var(--text-light);
}

.preview-item-details {
  background-color: var(--bg-color);
  padding: 15px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}

.detail-label {
  font-weight: 600;
  color: var(--text-secondary);
  display: inline-block;
  width: 60px;
}

/* メールプレビューモーダル */
.email-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  overflow: auto;
}

.email-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.email-modal-content {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  width: 700px;
  max-width: 90%;
  max-height: 90vh;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  animation: modalFadeIn 0.3s;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.email-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.email-modal-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.close-email-modal {
  font-size: 24px;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
}

.close-email-modal:hover {
  color: var(--danger-color);
}

.email-modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.email-details {
  background-color: var(--bg-color);
  border-radius: var(--radius);
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.email-field {
  display: flex;
  align-items: center;
}

.email-field-label {
  width: 80px;
  font-weight: 600;
  color: var(--text-secondary);
}

.email-field-value {
  flex: 1;
}

.email-content-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.email-content-label {
  font-weight: 600;
  color: var(--text-secondary);
}

.editor-toolbar {
  display: flex;
  gap: 5px;
  padding: 8px;
  background-color: var(--bg-color);
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid var(--border-color);
  border-bottom: none;
}

.editor-tool {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: var(--transition);
}

.editor-tool:hover {
  background-color: var(--bg-light);
  color: var(--primary-color);
}

.editor-content {
  flex: 1;
  min-height: 300px;
  max-height: 400px;
  overflow-y: auto;
  padding: 15px;
  border: 1px solid var(--border-color);
  border-radius: 0 0 var(--radius) var(--radius);
  line-height: 1.6;
}

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

.editor-content p {
  margin-bottom: 10px;
}

.email-modal-footer {
  display: flex;
  justify-content: flex-end;
  padding: 15px 20px;
  border-top: 1px solid var(--border-color);
  gap: 10px;
}

/* メール返信履歴 */
.email-history-container {
  display: flex;
  height: calc(100vh - var(--header-height) - 130px);
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

/* 会社リストサイドバー */
.company-sidebar {
  width: 320px;
  background-color: var(--bg-color);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.sidebar-search {
  padding: 15px;
  display: flex;
  align-items: center;
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
}

.sidebar-search i {
  color: var(--text-light);
  margin-right: 10px;
}

.company-search-input {
  border: none;
  background: none;
  outline: none;
  width: 100%;
  color: var(--text-color);
}

.company-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.company-category {
  margin-bottom: 15px;
}

.category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 15px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 13px;
  text-transform: uppercase;
}

.category-header:hover {
  color: var(--text-color);
}

.category-items {
  margin-top: 5px;
}

.company-item {
  display: flex;
  align-items: center;
  padding: 10px 15px;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 5px;
  margin: 0 5px;
}

.company-item:hover {
  background-color: var(--bg-light);
}

.company-item.active {
  background-color: var(--primary-light);
}

.company-avatar {
  width: 40px;
  height: 40px;
  background-color: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 12px;
  color: var(--primary-color);
}

.company-info {
  flex: 1;
  overflow: hidden;
  margin-right: 10px;
}

.company-name {
  font-weight: 600;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.company-last-message {
  font-size: 12px;
  color: var(--text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.company-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  min-width: 50px;
}

.message-time {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 5px;
}

.unread-badge {
  background-color: var(--primary-color);
  color: white;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* メッセージエリア */
.message-area {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-light);
}

.message-header-info {
  display: flex;
  align-items: center;
}

.header-company-avatar {
  width: 40px;
  height: 40px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 15px;
  color: var(--primary-color);
}

.header-company-info {
  display: flex;
  flex-direction: column;
}

.header-company-name {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 3px;
}

.header-company-details {
  font-size: 12px;
  color: var(--text-light);
}

.message-header-actions {
  display: flex;
  gap: 10px;
}

.header-action-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition);
}

.header-action-btn:hover {
  background-color: var(--bg-color);
  color: var(--primary-color);
}

.message-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.message-date-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0;
}

.message-date-divider span {
  background-color: var(--bg-light);
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-secondary);
}

.message-item {
  display: flex;
  flex-direction: column;
  max-width: 80%;
}

.message-item.sent {
  align-self: flex-end;
}

.message-item.received {
  align-self: flex-start;
}

.message-item.system {
  align-self: center;
  max-width: 100%;
}

.message-info {
  display: flex;
  align-items: center;
  margin-bottom: 5px;
}

.message-sender {
  font-weight: 600;
  margin-right: 10px;
}

.message-bubble {
  background-color: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 12px 15px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.message-item.sent .message-bubble {
  background-color: var(--primary-light);
  color: var(--text-color);
}

.message-item.system .message-bubble {
  background-color: var(--bg-color);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 8px 12px;
}

.message-subject {
  font-weight: 600;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.message-text {
  line-height: 1.5;
}

.message-text p {
  margin-bottom: 8px;
}

.message-text p:last-child {
  margin-bottom: 0;
}

.message-link {
  color: var(--primary-color);
  text-decoration: underline;
}

.message-attachments {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.attachment {
  display: flex;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.5);
  padding: 5px 10px;
  border-radius: var(--radius);
  font-size: 12px;
  transition: var(--transition);
  cursor: pointer;
}

.attachment:hover {
  background-color: rgba(255, 255, 255, 0.8);
}

.attachment i {
  margin-right: 5px;
}

.new-messages-divider {
  display: flex;
  align-items: center;
  margin: 10px 0;
  position: relative;
}

.new-messages-divider::before {
  content: '';
  flex-grow: 1;
  height: 1px;
  background-color: var(--primary-color);
  margin-right: 10px;
}

.new-messages-divider::after {
  content: '';
  flex-grow: 1;
  height: 1px;
  background-color: var(--primary-color);
  margin-left: 10px;
}

.new-messages-divider span {
  background-color: var(--primary-light);
  color: var(--primary-color);
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.message-input-area {
  padding: 15px 20px;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-light);
  display: flex;
  gap: 10px;
}

.input-attachments {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 5px;
}

.attachment-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition);
}

.attachment-btn:hover {
  background-color: var(--bg-color);
  color: var(--primary-color);
}

.input-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-color);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.email-subject-input {
  padding: 10px 15px;
  border-bottom: 1px solid var(--border-light);
}

.subject-input {
  width: 100%;
  border: none;
  background: none;
  outline: none;
  color: var(--text-color);
  font-weight: 600;
}

.email-body-input {
  min-height: 100px;
  max-height: 200px;
  overflow-y: auto;
  padding: 15px;
  outline: none;
  line-height: 1.5;
}

.email-body-input[placeholder]:empty:before {
  content: attr(placeholder);
  color: var(--text-light);
}

.input-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 5px;
}

.input-action-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition);
}

.input-action-btn:hover {
  background-color: var(--bg-color);
  color: var(--primary-color);
}

.send-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  transition: var(--transition);
  margin-top: auto;
}

.send-btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}

/* ダークモード追加 */
body.theme-dark .message-item.sent .message-bubble {
  background-color: var(--primary-light);
  color: var(--text-color);
}

body.theme-dark .message-item.system .message-bubble {
  background-color: var(--bg-dark);
}

body.theme-dark .attachment {
  background-color: rgba(255, 255, 255, 0.1);
}

body.theme-dark .attachment:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

body.theme-dark .new-messages-divider span {
  background-color: var(--primary-dark);
}

/* レスポンシブ */
@media (max-width: 1024px) {
  .email-history-container {
    flex-direction: column;
    height: auto;
  }
  
  .company-sidebar {
    width: 100%;
    max-height: 300px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  
  .message-area {
    height: calc(100vh - var(--header-height) - 430px);
  }
}

@media (max-width: 768px) {
  .email-modal-content {
    width: 95%;
  }
  
  .message-item {
    max-width: 90%;
  }
  
  .editor-content {
    min-height: 200px;
  }
  
  .message-input-area {
    flex-wrap: wrap;
  }
  
  .input-attachments, .input-actions {
    flex-direction: row;
    width: 100%;
    justify-content: space-between;
  }
  
  .input-container {
    width: 100%;
    order: -1;
  }
  
  .send-btn {
    margin-top: 0;
  }
}