/**
 * Admin Panel Styles - Modern Sidebar Layout with Blue Theme
 * 管理画面専用スタイル - サイドバーレイアウト + 青系カラーテーマ
 */

/* Google Fonts - Noto Sans JP */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* グローバルフォント設定 */
* {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif !important;
}

body,
body * {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif !important;
}

/* ========================================
   Color Variables - Blue Theme
   ======================================== */
:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --primary-bg: #eff6ff;
  
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 70px;
  --topbar-height: 60px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

/* ========================================
   Admin Layout Structure
   ======================================== */
body.admin-layout {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background-color: #f8fafc;
}

/* ========================================
   Sidebar Navigation
   ======================================== */
.admin-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: linear-gradient(180deg, #1e40af 0%, #1e3a8a 100%);
  color: white;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transition: width var(--transition-normal), opacity 0.2s ease;
  overflow: hidden;
  /* ちらつき防止: 初期状態で非表示 */
  opacity: 0;
}

/* 認証完了後に表示 */
.admin-sidebar.ready {
  opacity: 1;
}

/* Collapsed state */
.admin-sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.admin-sidebar.collapsed .sidebar-logo span,
.admin-sidebar.collapsed .user-info,
.admin-sidebar.collapsed .sidebar-link span,
.admin-sidebar.collapsed .sidebar-logout span {
  opacity: 0;
  width: 0;
  overflow: hidden;
  white-space: nowrap;
}

.admin-sidebar.collapsed .sidebar-user {
  flex-direction: column;
  padding: 1rem 0.5rem;
}

.admin-sidebar.collapsed .user-avatar {
  font-size: 2rem;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  min-height: 60px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  transition: gap var(--transition-normal);
}

.admin-sidebar.collapsed .sidebar-logo {
  gap: 0;
  justify-content: center;
}

.sidebar-logo i {
  font-size: 1.5rem;
  color: #60a5fa;
  min-width: 1.5rem;
}

.sidebar-logo span {
  transition: opacity var(--transition-normal), width var(--transition-normal);
}

.sidebar-toggle {
  background: none;
  border: none;
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
}

.sidebar-toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.sidebar-toggle i {
  transition: transform var(--transition-normal);
}

.admin-sidebar.collapsed .sidebar-toggle i {
  transform: rotate(180deg);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background-color: rgba(0, 0, 0, 0.2);
  transition: all var(--transition-normal);
}

.user-avatar {
  font-size: 2.5rem;
  color: #60a5fa;
  min-width: 2.5rem;
  display: flex;
  justify-content: center;
  transition: font-size var(--transition-normal);
}

.user-info {
  flex: 1;
  transition: opacity var(--transition-normal), width var(--transition-normal);
  overflow: hidden;
}

.user-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  white-space: nowrap;
}

.user-role {
  font-size: 0.75rem;
  color: #bfdbfe;
  white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  position: relative;
}

.admin-sidebar.collapsed .sidebar-link {
  padding: 0.75rem 0;
  justify-content: center;
  gap: 0;
}

.sidebar-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
}

.sidebar-link.active {
  background-color: rgba(96, 165, 250, 0.2);
  color: white;
  border-left-color: #60a5fa;
  font-weight: 600;
}

.sidebar-link i {
  width: 1.25rem;
  text-align: center;
  font-size: 1.125rem;
  min-width: 1.25rem;
}

.sidebar-link span {
  transition: opacity var(--transition-normal), width var(--transition-normal);
  white-space: nowrap;
  overflow: hidden;
}

/* Tooltip for collapsed state */
.admin-sidebar.collapsed .sidebar-link {
  position: relative;
}

.admin-sidebar.collapsed .sidebar-link:hover::after {
  content: attr(data-label);
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-left: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: #1f2937;
  color: white;
  border-radius: 0.375rem;
  white-space: nowrap;
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  pointer-events: none;
}

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  transition: padding var(--transition-normal);
}

.admin-sidebar.collapsed .sidebar-footer {
  padding: 1rem 0.5rem;
}

.sidebar-logout {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem;
  background-color: rgba(239, 68, 68, 0.2);
  color: white;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.admin-sidebar.collapsed .sidebar-logout {
  gap: 0;
  padding: 0.75rem 0.5rem;
}

.sidebar-logout:hover {
  background-color: rgba(239, 68, 68, 0.3);
}

.sidebar-logout span {
  transition: opacity var(--transition-normal), width var(--transition-normal);
  white-space: nowrap;
  overflow: hidden;
}

/* ========================================
   Top Bar
   ======================================== */
.admin-topbar {
  position: fixed;
  left: var(--sidebar-width);
  top: 0;
  right: 0;
  height: var(--topbar-height);
  background: white;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 900;
  box-shadow: var(--shadow-sm);
  transition: left var(--transition-normal);
}

body.sidebar-collapsed .admin-topbar {
  left: var(--sidebar-collapsed-width);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hamburger-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #4b5563;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: background-color var(--transition-fast);
}

.hamburger-btn:hover {
  background-color: #f3f4f6;
}

.topbar-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.topbar-title i {
  color: var(--primary-color);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-logout {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: #f3f4f6;
  color: #4b5563;
  border: none;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.btn-logout:hover {
  background-color: #e5e7eb;
  color: #1f2937;
}

/* ========================================
   Main Content Area
   ======================================== */
.admin-layout main {
  margin-left: var(--sidebar-width);
  margin-top: var(--topbar-height);
  padding: 2rem;
  min-height: calc(100vh - var(--topbar-height));
  transition: margin-left var(--transition-normal);
}

body.sidebar-collapsed .admin-layout main {
  margin-left: var(--sidebar-collapsed-width);
}

/* Admin Overlay for Mobile */
.admin-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.admin-overlay.active {
  display: block;
  opacity: 1;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .admin-sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width) !important;
  }
  
  .admin-sidebar.active {
    transform: translateX(0);
  }
  
  .admin-sidebar.collapsed {
    transform: translateX(-100%);
  }
  
  .admin-topbar {
    left: 0 !important;
  }
  
  .hamburger-btn {
    display: block;
  }
  
  .admin-layout main {
    margin-left: 0 !important;
  }
  
  .logout-text {
    display: none;
  }
  
  /* Hide desktop toggle button on mobile */
  .admin-sidebar .sidebar-toggle {
    display: none;
  }
}

@media (max-width: 768px) {
  .admin-topbar {
    padding: 0 1rem;
  }
  
  .topbar-title {
    font-size: 1rem;
  }
  
  .admin-layout main {
    padding: 1rem;
  }
}

/* Admin Cards Grid */
.admin-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.admin-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  text-decoration: none;
  display: block;
  border: 1px solid #e5e7eb;
}

.admin-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.admin-card-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-4);
}

.admin-card-icon.blue { color: var(--primary-color); }
.admin-card-icon.green { color: #10b981; }
.admin-card-icon.purple { color: #8b5cf6; }
.admin-card-icon.orange { color: #f59e0b; }
.admin-card-icon.teal { color: #14b8a6; }
.admin-card-icon.pink { color: #ec4899; }
.admin-card-icon.cyan { color: #06b6d4; }
.admin-card-icon.amber { color: #f59e0b; }
.admin-card-icon.red { color: #ef4444; }

.admin-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
}

.admin-card-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

/* Admin Table */
.admin-table-container {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-top: var(--spacing-6);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table thead {
  background-color: var(--color-gray-100);
}

.admin-table th {
  padding: var(--spacing-4);
  text-align: left;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.admin-table td {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.admin-table tbody tr:hover {
  background-color: var(--color-gray-50);
}

/* 操作列のアイコンボタン */
.admin-table td button,
.admin-table td a {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
}

.admin-table td button:hover,
.admin-table td a:hover {
  background-color: rgba(0, 0, 0, 0.05);
  text-decoration: none;
}

.admin-table td button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Admin Form */
.admin-form {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-md);
  margin-top: var(--spacing-6);
}

/* Search Form */
.search-form {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.search-form .grid {
  display: grid;
  gap: var(--spacing-4);
}

.search-form .admin-form-group {
  margin-bottom: 0;
}

.search-actions {
  display: flex;
  gap: var(--spacing-3);
  justify-content: flex-end;
  margin-top: var(--spacing-4);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--border-color);
}

.admin-form-group {
  margin-bottom: var(--spacing-6);
}

.admin-form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
}

.admin-form-input,
.admin-form-textarea,
.admin-form-select {
  width: 100%;
  padding: var(--spacing-3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.admin-form-input:focus,
.admin-form-textarea:focus,
.admin-form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}

.admin-form-textarea {
  min-height: 120px;
  resize: vertical;
}

.admin-form-actions {
  display: flex;
  gap: var(--spacing-4);
  justify-content: flex-end;
  margin-top: var(--spacing-8);
}

/* Admin Stats */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.admin-stat-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.admin-stat-icon {
  font-size: 2.5rem;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
}

.admin-stat-icon.blue { background-color: #dbeafe; color: #3b82f6; }
.admin-stat-icon.green { background-color: #d1fae5; color: #10b981; }
.admin-stat-icon.purple { background-color: #ede9fe; color: #7c3aed; }
.admin-stat-icon.orange { background-color: #fed7aa; color: #f59e0b; }

.admin-stat-content {
  flex: 1;
}

.admin-stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-1);
}

.admin-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

/* Admin Badge */
.admin-badge {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.admin-badge.success {
  background-color: #d1fae5;
  color: #065f46;
}

.admin-badge.warning {
  background-color: #fed7aa;
  color: #92400e;
}

.admin-badge.danger {
  background-color: #fee2e2;
  color: #991b1b;
}

.admin-badge.info {
  background-color: #dbeafe;
  color: #1e3a8a;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing-4);
  }

  .admin-nav-menu {
    flex-direction: column;
    gap: var(--spacing-2);
  }

  .admin-cards-grid {
    grid-template-columns: 1fr;
  }

  .admin-table-container {
    overflow-x: auto;
  }
}

/* ===========================================
   Form Fields Manager Styles
   =========================================== */

.form-field-item {
  position: relative;
  border-left: 4px solid var(--primary);
  transition: all 0.3s ease;
}

.form-field-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.form-field-item h3 {
  color: var(--primary);
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-icon {
  background: none;
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
}

.btn-icon:hover {
  background: var(--gray-100);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-icon i {
  font-size: 0.875rem;
}

.options-container {
  background: var(--gray-50);
  padding: var(--spacing-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.col-md-2,
.col-md-3,
.col-md-4,
.col-md-6 {
  flex: 1;
  min-width: 0;
}

@media (min-width: 768px) {
  .col-md-2 { flex: 0 0 16.666667%; }
  .col-md-3 { flex: 0 0 25%; }
  .col-md-4 { flex: 0 0 33.333333%; }
  .col-md-6 { flex: 0 0 50%; }
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(var(--spacing-3) * -1);
  margin-right: calc(var(--spacing-3) * -1);
}

.row > * {
  padding-left: var(--spacing-3);
  padding-right: var(--spacing-3);
}

/* ===========================================
   Event Form Styles (イベント登録フォーム)
   =========================================== */

/* Form Section Headers */
.form-section {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-6);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.form-section-title {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-white);
  padding: var(--spacing-4) var(--spacing-6);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin: 0;
}

.form-section-title i {
  font-size: 1.25rem;
}

/* Subsection Title (h4) - form-labelと同じスタイル */
.subsection-title {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  padding-bottom: var(--spacing-2);
  border-bottom: 2px solid #000;
}

/* Subsection Subtitle (h5) - form-labelと同じスタイル */
.subsection-subtitle {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

/* Form Section Content */
.form-section-content {
  padding: var(--spacing-6);
}

/* Form Row - 2 Column Layout */
.form-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* デフォルトで4列表示 */
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

@media (max-width: 767px) {
  .form-row {
    grid-template-columns: 1fr; /* モバイルは1列 */
  }
}

@media (min-width: 768px) {
@media (min-width: 768px) {
  .form-row.single-column {
    grid-template-columns: 1fr;
  }
  
  .form-row.two-columns {
    grid-template-columns: 1fr 1fr; /* 2列指定用クラス追加 */
  }
  
  .form-row.three-columns {
    grid-template-columns: repeat(3, 1fr); /* 3列指定用クラス追加 */
  }
}

/* Form Group */
.form-group {
  margin-bottom: var(--spacing-6);
}

.form-group:last-child {
  margin-bottom: 0;
}

/* Full Width Form Group (for file inputs, etc.) */
.form-group.full-width {
  grid-column: 1 / -1;
}

/* Form Labels */
.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

/* Required Mark */
.required {
  color: #dc2626;
  margin-left: var(--spacing-1);
  font-weight: var(--font-weight-bold);
}

/* Form Controls */
.form-control {
  width: 100%;
  padding: var(--spacing-3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control:disabled {
  background-color: var(--color-gray-100);
  cursor: not-allowed;
  opacity: 0.6;
}

/* Textarea */
textarea.form-control {
  min-height: 100px;
  resize: vertical;
  font-family: inherit;
  line-height: 1.5;
}

/* Select */
select.form-control {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 12px;
  padding-right: 2.5rem;
  appearance: none;
}

/* Checkbox */
input[type="checkbox"].form-control {
  width: auto;
  margin-right: var(--spacing-2);
  cursor: pointer;
}

/* File Input - Force full width and proper height */
input[type="file"].form-control {
  width: 100%;
  min-width: 300px;
  max-width: 100%;
  height: auto;
  min-height: 44px;
  padding: 0.75rem 1rem;
  line-height: 1.5;
}

/* Helper Text */
.form-helper {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-2);
}

/* Error Message */
.form-error {
  font-size: var(--font-size-sm);
  color: #dc2626;
  margin-top: var(--spacing-2);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

/* Image Upload Area */
.image-upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-8);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  background-color: var(--color-gray-50);
}

.image-upload-area:hover {
  border-color: var(--primary-color);
  background-color: rgba(59, 130, 246, 0.05);
}

.image-upload-area.drag-over {
  border-color: var(--primary-color);
  background-color: rgba(59, 130, 246, 0.1);
}

.upload-icon {
  font-size: 3rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-4);
}

.upload-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Image Preview */
.image-preview {
  margin-top: var(--spacing-4);
  text-align: center;
}

.image-preview img {
  max-width: 100%;
  max-height: 300px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* Payment Method Settings */
.payment-method {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.payment-method-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-3);
  border-bottom: 1px solid var(--border-color);
}

.payment-method-header input[type="checkbox"] {
  width: auto;
}

.payment-method-header label {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin: 0;
  cursor: pointer;
}

.payment-details {
  display: none;
  padding-top: var(--spacing-3);
}

.payment-details.active {
  display: block;
}

/* Convenience Store Settings */
.convenience-stores {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-3);
  margin-top: var(--spacing-3);
}

.store-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2);
  background-color: var(--bg-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.store-checkbox:hover {
  background-color: var(--color-gray-50);
  border-color: var(--primary-color);
}

.store-checkbox input[type="checkbox"] {
  width: auto;
  margin: 0;
}

/* Form Fields Checkboxes */
.form-fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-3);
}

.field-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2);
  background-color: var(--bg-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.field-checkbox:hover {
  background-color: var(--color-gray-50);
  border-color: var(--primary-color);
}

.field-checkbox input[type="checkbox"] {
  width: auto;
  margin: 0;
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: var(--spacing-4);
  justify-content: flex-end;
  padding-top: var(--spacing-6);
  margin-top: var(--spacing-8);
  border-top: 2px solid var(--border-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-white);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1d4ed8 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-gray-200);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--color-gray-300);
}

.btn-text {
  background: none !important;
  color: inherit !important;
  text-decoration: none !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: var(--spacing-2) !important;
  padding: var(--spacing-2) var(--spacing-4) !important;
  border-radius: var(--radius-md) !important;
  transition: all var(--transition-fast) !important;
}

.btn-text:hover {
  background-color: rgba(255, 255, 255, 0.1) !important;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Loading Spinner - シンプルバージョン */
#loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
  text-align: center;
  color: var(--text-secondary);
}

#loading p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: var(--spacing-3);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .form-section-content {
    padding: var(--spacing-4);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .convenience-stores,
  .form-fields-grid {
    grid-template-columns: 1fr;
  }
}


/* ========================================
   管理画面コンパクト化スタイル
   ※予約管理と共有在庫を除く全般
   ======================================== */

/* Page Header - コンパクト化 */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-4); /* 24px → 16px */
  padding-bottom: var(--spacing-3); /* 追加: 12px */
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-size: var(--font-size-xl) !important; /* 30px → 20px */
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-2); /* 12px → 8px */
  margin: 0;
}

.page-title i {
  font-size: var(--font-size-lg); /* アイコンも小さく */
}

/* Page Actions - コンパクト化 */
.page-actions {
  display: flex;
  gap: var(--spacing-2); /* 12px → 8px */
}

/* Admin Main - コンテンツエリアのマージン縮小 */
.admin-main {
  padding: var(--spacing-4) 0; /* 32px → 16px */
  min-height: calc(100vh - 200px);
}

.admin-main .container {
  max-width: 100%; /* 幅を広く */
  padding: 0 var(--spacing-3); /* 16px → 12px */
}

/* Admin Card - コンパクト化 */
.admin-card {
  padding: var(--spacing-4); /* 32px → 16px */
}

.admin-card-title {
  font-size: var(--font-size-lg); /* 20px → 18px */
  margin-bottom: var(--spacing-2); /* 8px → 8px */
}

/* Admin Table - コンパクト化 */
.admin-table th {
  padding: var(--spacing-2) var(--spacing-3); /* 16px → 8px 12px */
  font-size: var(--font-size-sm); /* 14px */
}

.admin-table td {
  padding: var(--spacing-2) var(--spacing-3); /* 16px → 8px 12px */
  font-size: var(--font-size-sm); /* 14px */
}

/* Form Section Title - コンパクト化 */
.form-section-title {
  padding: var(--spacing-2) var(--spacing-4); /* 16px 24px → 8px 16px */
  font-size: var(--font-size-base); /* 18px → 16px */
  gap: var(--spacing-2); /* 12px → 8px */
}

.form-section-title i {
  font-size: 1rem; /* 1.25rem → 1rem */
}

/* Form Section Content - コンパクト化 */
.form-section-content {
  padding: var(--spacing-4); /* 24px → 16px */
}

/* Form Row - 行間縮小 */
.form-row {
  gap: var(--spacing-2); /* 12px → 8px にさらに縮小 */
  margin-bottom: var(--spacing-2); /* 12px → 8px にさらに縮小 */
}

/* Form Group - マージン縮小 */
.form-group {
  margin-bottom: var(--spacing-2); /* 12px → 8px にさらに縮小 */
}

/* Form Label - フォントサイズ縮小 */
.form-label {
  font-size: var(--font-size-sm); /* 14px */
  margin-bottom: 2px; /* 4px → 2px にさらに縮小 */
}

/* Form Input - パディング縮小 */
.form-input,
.form-textarea,
.form-select,
.form-control {
  padding: 6px 10px; /* 8px 12px → 6px 10px にさらに縮小 */
  font-size: var(--font-size-sm); /* 14px */
  height: 32px; /* 明示的に高さを指定 */
}

/* Select専用の高さ調整 */
select.form-control,
select.form-select {
  height: 32px;
  padding: 5px 10px;
}

/* Form Textarea - 高さ調整 */
.form-textarea {
  min-height: 60px; /* 80px → 60px にさらに縮小 */
  height: auto; /* textareaは可変 */
}

/* Button - パディング縮小 */
.btn {
  padding: var(--spacing-2) var(--spacing-4) !important; /* 12px 24px → 8px 16px */
  font-size: var(--font-size-sm) !important; /* 14px */
}

.btn-lg {
  padding: var(--spacing-3) var(--spacing-5) !important; /* 16px 32px → 12px 20px */
  font-size: var(--font-size-base) !important; /* 16px */
}

.btn i {
  font-size: var(--font-size-sm); /* アイコンも小さく */
}

/* Search Form - コンパクト化 */
.search-form {
  padding: var(--spacing-3); /* 16px → 12px にさらに縮小 */
  margin-bottom: var(--spacing-3); /* 16px → 12px にさらに縮小 */
}

/* Admin Form - コンパクト化 */
.admin-form {
  padding: var(--spacing-4); /* 32px → 16px */
  margin-top: var(--spacing-4); /* 24px → 16px */
}

/* Form Actions - マージン縮小 */
.form-actions {
  margin-top: var(--spacing-2); /* 16px → 8px にさらに縮小 */
  gap: var(--spacing-2); /* 8px のまま */
}

/* Breadcrumb - コンパクト化 */
.breadcrumb {
  font-size: var(--font-size-sm); /* 14px */
  padding: var(--spacing-2) 0; /* 追加 */
  margin-bottom: var(--spacing-2); /* 追加 */
}

/* Required Mark - 小さく */
.required {
  font-size: var(--font-size-xs); /* 12px */
}

/* Helper Text - 小さく */
.form-help,
.text-muted,
.text-secondary {
  font-size: var(--font-size-xs) !important; /* 12px */
}

/* Checkbox/Radio Label - コンパクト化 */
.checkbox-label,
.radio-label {
  font-size: var(--font-size-sm); /* 14px */
  gap: var(--spacing-1); /* 8px → 4px */
}

/* Alert - コンパクト化 */
.alert {
  padding: var(--spacing-2) var(--spacing-3); /* 縮小 */
  font-size: var(--font-size-sm); /* 14px */
}

/* Modal - コンパクト化 */
.modal-header {
  padding: var(--spacing-3) var(--spacing-4); /* 縮小 */
}

.modal-title {
  font-size: var(--font-size-lg); /* 小さく */
}

.modal-body {
  padding: var(--spacing-4); /* 縮小 */
  font-size: var(--font-size-sm); /* 14px */
}

.modal-footer {
  padding: var(--spacing-3) var(--spacing-4); /* 縮小 */
  gap: var(--spacing-2); /* 縮小 */
}

/* Pagination - コンパクト化 */
.pagination {
  gap: var(--spacing-1); /* 縮小 */
}

.pagination button,
.pagination a {
  padding: var(--spacing-1) var(--spacing-2); /* 縮小 */
  font-size: var(--font-size-sm); /* 14px */
}

/* Badge - コンパクト化 */
.badge {
  padding: var(--spacing-1) var(--spacing-2); /* 縮小 */
  font-size: var(--font-size-xs); /* 12px */
}

/* Stats Card - コンパクト化 */
.admin-stat-card {
  padding: var(--spacing-3); /* 24px → 12px */
}

.admin-stat-icon {
  font-size: 2rem; /* 2.5rem → 2rem */
  width: 48px; /* 64px → 48px */
  height: 48px;
}

.admin-stat-label {
  font-size: var(--font-size-xs); /* 小さく */
}

.admin-stat-value {
  font-size: var(--font-size-2xl); /* 30px → 24px */
}

/* ========================================
   Admin Footer
   ======================================== */
.admin-footer {
  background: var(--gray-100);
  border-top: 1px solid var(--gray-300);
  padding: var(--spacing-4) 0;
  margin-top: auto;
  text-align: center;
}

.admin-footer .container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.admin-footer p {
  margin: 0;
  color: var(--gray-600);
  font-size: var(--font-size-sm);
}

/* ========================================
   Stats Grid - 統計カード用グリッド
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.stat-card-primary {
  background: var(--color-primary-light, #eff6ff);
  border-color: var(--color-primary, #2563eb);
}

.stat-card-danger {
  background: var(--color-danger-light, #fef2f2);
  border-color: var(--color-danger, #ef4444);
}

.stat-card-success {
  background: var(--color-success-light, #f0fdf4);
  border-color: var(--color-success, #22c55e);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--spacing-1);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stat-card-primary .stat-value {
  color: var(--color-primary);
}

.stat-card-danger .stat-value {
  color: var(--color-danger);
}

.stat-card-success .stat-value {
  color: var(--color-success);
}

/* ========================================
   予約管理と共有在庫は除外
   ======================================== */
/* 予約管理ページ */
body:has([href*="/admin/bookings"]) .admin-main,
[href="/admin/bookings"] ~ * .admin-main,
/* 共有在庫ページ */
body:has([href*="/admin/shared-stock-pools"]) .admin-main,
[href="/admin/shared-stock-pools"] ~ * .admin-main {
  /* 通常スタイルを維持（コンパクト化を適用しない） */
}

/* ========================================
   予約詳細画面のレイアウト改善
   ======================================== */

/* 2カラムレイアウト */
.detail-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

/* タブレット以下では1カラムに */
@media (max-width: 768px) {
  .detail-row {
    grid-template-columns: 1fr;
  }
}

/* 予約明細のスタイル改善 */
#itemsContainer .table-container {
  margin-bottom: 30px;
}

/* 各明細ブロックに背景色を追加 */
#itemsContainer > div {
  background-color: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  border: 1px solid #e9ecef;
}

#itemsContainer > div:last-child {
  margin-bottom: 0;
}

/* 明細テーブルのヘッダー（項目名）に背景色を追加 */
#itemsContainer .table thead th {
  background-color: #e7f3ff;
  color: #1e40af;
  font-weight: 600;
  padding: 12px 8px;
  border-bottom: 2px solid #bfdbfe;
}

/* 明細テーブルの偶数行にストライプ */
#itemsContainer .table tbody tr:nth-child(even) {
  background-color: #ffffff;
}

#itemsContainer .table tbody tr:nth-child(odd) {
  background-color: #f8f9fa;
}

/* 明細テーブルのセル */
#itemsContainer .table tbody td {
  padding: 10px 8px;
  vertical-align: middle;
}

/* 参加者情報テーブルのカラム幅を固定 */
#itemsContainer .participants-table {
  table-layout: fixed;
  width: 100%;
}

#itemsContainer .participants-table th:nth-child(1) { width: 8%; }   /* 姓 */
#itemsContainer .participants-table th:nth-child(2) { width: 8%; }   /* 名 */
#itemsContainer .participants-table th:nth-child(3) { width: 6%; }   /* 年齢 */
#itemsContainer .participants-table th:nth-child(4) { width: 6%; }   /* 性別 */
#itemsContainer .participants-table th:nth-child(5) { width: 20%; }  /* メール */
#itemsContainer .participants-table th:nth-child(6) { width: 12%; }  /* 電話 */
#itemsContainer .participants-table th:nth-child(7) { width: 10%; }  /* 生年月日 */
#itemsContainer .participants-table th:nth-child(8) { width: 30%; }  /* 付加情報 */

#itemsContainer .participants-table td {
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* 決済履歴テーブルのヘッダーにも背景色を追加 */
#paymentsContainer .table thead th {
  background-color: #fef3c7;
  color: #92400e;
  font-weight: 600;
  padding: 12px 8px;
  border-bottom: 2px solid #fde68a;
}

/* 決済履歴テーブルのストライプ */
#paymentsContainer .table tbody tr:nth-child(even) {
  background-color: #fffbeb;
}

#paymentsContainer .table tbody tr:nth-child(odd) {
  background-color: #ffffff;
}

/* 返金履歴テーブルのヘッダー */
#refundsContainer .table thead th {
  background-color: #fee2e2;
  color: #991b1b;
  font-weight: 600;
  padding: 12px 8px;
  border-bottom: 2px solid #fecaca;
}

/* 返金履歴テーブルのストライプ */
#refundsContainer .table tbody tr:nth-child(even) {
  background-color: #fef2f2;
}

#refundsContainer .table tbody tr:nth-child(odd) {
  background-color: #ffffff;
}

/* テーブルのホバーエフェクト */
#itemsContainer .table tbody tr:hover,
#paymentsContainer .table tbody tr:hover,
#refundsContainer .table tbody tr:hover {
  background-color: #e0f2fe;
  transition: background-color 0.2s ease;
}

/* 明細ごとの見出し */
#itemsContainer h3 {
  color: #1e40af;
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid #bfdbfe;
  display: flex;
  align-items: center;
  gap: 10px;
}

#itemsContainer h3 i {
  color: #3b82f6;
}

/* 料金情報の強調 */
.detail-item .detail-label {
  font-weight: 600;
  color: #4b5563;
  margin-bottom: 5px;
}

.detail-item .detail-value {
  color: #1f2937;
  font-size: 1rem;
}

/* 料金情報カード内の金額を強調 */
.admin-card:has(#totalPrice) .detail-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: #059669;
}

.admin-card:has(#totalRefunded) .detail-value {
  color: #dc2626;
}

.admin-card:has(#netAmount) .detail-value {
  color: #2563eb;
}


/* ==================== Modal Styles ==================== */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid #e5e7eb;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #6b7280;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.modal-close:hover {
  background-color: #f3f4f6;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 1.5rem;
  border-top: 1px solid #e5e7eb;
}

/* ==================== Drop Zone Styles ==================== */
.drop-zone {
  border: 2px dashed #cbd5e1;
  border-radius: 8px;
  padding: 3rem 2rem;
  text-align: center;
  background-color: #f8fafc;
  transition: all 0.3s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.drop-zone:hover {
  border-color: #3b82f6;
  background-color: #eff6ff;
}

.drop-zone.drag-over {
  border-color: #3b82f6;
  background-color: #dbeafe;
}

.drop-zone p {
  margin: 0;
  color: #64748b;
}

/* ==================== File Info Styles ==================== */
.file-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: #f8fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.file-info i {
  font-size: 32px;
}

.file-info span:first-of-type {
  flex: 1;
  font-weight: 500;
  color: #1f2937;
}

.file-info span:last-of-type {
  color: #64748b;
  font-size: 0.875rem;
}

.btn-icon {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #6b7280;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.btn-icon:hover {
  background-color: #e5e7eb;
  color: #ef4444;
}

/* ==================== Files List Styles ==================== */
.files-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: #f8fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  transition: all 0.2s;
}

.file-item:hover {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.file-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background-color: #fff;
  border-radius: 8px;
  flex-shrink: 0;
}

.file-item .file-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0;
  background: none;
  border: none;
}

.file-name {
  font-weight: 600;
  font-size: 1rem;
  color: #1f2937;
}

.file-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: #64748b;
}

.file-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.file-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-danger {
  background-color: #fee2e2;
  color: #dc2626;
}

/* ==================== Button Styles ==================== */
.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

.btn-info {
  background-color: #0ea5e9;
  color: #fff;
}

.btn-info:hover {
  background-color: #0284c7;
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
  .file-item {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .file-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  
  .modal-content {
    width: 95%;
  }
}

/* ==================== Suggest List (Auto-complete) ==================== */
.suggest-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid #dee2e6;
  border-radius: 0.25rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
  margin-top: 4px;
}

.suggest-item {
  padding: 0.75rem 1rem;
  cursor: pointer;
  border-bottom: 1px solid #f1f3f5;
  transition: background-color 0.15s ease;
}

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

.suggest-item:hover {
  background-color: #f8f9fa;
}

.suggest-item strong {
  display: block;
  color: #212529;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.suggest-item small {
  color: #6c757d;
  font-size: 0.8rem;
}

/* ========================================
   モーダルダイアログ（オーバーレイ型）
   ======================================== */
/* ========================================
   モーダルダイアログ（オーバーレイ型）
   ======================================== */
.modal {
  display: none; /* デフォルトは非表示 */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease-in-out;
}

/* モーダル表示時のクラス */
.modal.show {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-content h3 {
  margin: 0 0 20px 0;
  font-size: 20px;
  font-weight: bold;
  color: #212529;
}

/* モーダル内のフォーム */
.modal-content .form-group {
  margin-bottom: 20px;
}

.modal-content .form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #495057;
}

.modal-content .form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ced4da;
  border-radius: 4px;
  font-size: 14px;
}

.modal-content .form-control:focus {
  outline: none;
  border-color: #0d6efd;
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}
}

/* ==========================================
   サブメニュー（アコーディオン）スタイル
   ========================================== */

/* サブメニューを持つメニュー項目 */
.sidebar-item {
  position: relative;
}

/* サブメニューボタン */
.sidebar-link.has-submenu {
  cursor: pointer;
  position: relative;
}

/* サブメニュー矢印 */
.submenu-arrow {
  margin-left: auto;
  font-size: 0.75rem;
  transition: transform 0.3s ease;
}

.sidebar-item.expanded .submenu-arrow {
  transform: rotate(180deg);
}

/* サブメニューコンテナ */
.submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background-color: rgba(0, 0, 0, 0.2);
}

.submenu.show {
  max-height: 500px;
}

/* サブメニューリンク */
.submenu-link {
  padding-left: 3.5rem !important;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
}

.submenu-link:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.submenu-link.active {
  background-color: rgba(96, 165, 250, 0.15);
  border-left-color: #60a5fa;
}

/* 折りたたみ時のサブメニュー表示 */
.admin-sidebar.collapsed .sidebar-item .submenu {
  display: none;
}

.admin-sidebar.collapsed .sidebar-link.has-submenu .submenu-arrow {
  display: none;
}

/* ホバー時にサブメニューをツールチップとして表示（折りたたみ時） */
.admin-sidebar.collapsed .sidebar-item:hover .submenu {
  display: block;
  position: absolute;
  left: 100%;
  top: 0;
  min-width: 200px;
  background-color: var(--sidebar-bg);
  box-shadow: 4px 0 8px rgba(0, 0, 0, 0.2);
  border-radius: 0 8px 8px 0;
  z-index: 1000;
  max-height: none;
}

.admin-sidebar.collapsed .sidebar-item:hover .submenu-link {
  padding-left: 1.5rem !important;
}

/* ========================================
   Form Validation Styles
   フォームバリデーション用スタイル
   ======================================== */

/* エラー表示用のフィールドスタイル */
.form-control.is-invalid,
.form-select.is-invalid,
.admin-input.is-invalid {
  border-color: #dc3545 !important;
  border-width: 2px !important;
  padding-right: calc(1.5em + 0.75rem);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right calc(0.375em + 0.1875rem) center;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

/* selectタグの場合はアイコン位置を調整 */
.form-select.is-invalid,
select.admin-input.is-invalid {
  padding-right: calc(0.75rem + 2.25rem);
  background-position: right 0.75rem center, right 2rem center;
}

/* エラーメッセージのスタイル */
.invalid-feedback {
  display: none;
  width: 100%;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: #dc3545;
  font-weight: 500;
}

.invalid-feedback.d-block,
.form-control.is-invalid ~ .invalid-feedback,
.form-select.is-invalid ~ .invalid-feedback,
.admin-input.is-invalid ~ .invalid-feedback {
  display: block !important;
}

/* フォーカス時のエラースタイル */
.form-control.is-invalid:focus,
.form-select.is-invalid:focus,
.admin-input.is-invalid:focus {
  border-color: #dc3545 !important;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

/* エラーフィールドへのアニメーション */
.is-invalid {
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

/* エラーアイコン付きラベル */
.form-label.text-danger::before,
label.text-danger::before {
  content: "⚠️ ";
  margin-right: 0.25rem;
}

/* エラーサマリー表示用のスタイル */
.validation-errors-summary {
  background-color: #fee;
  border: 2px solid #dc3545;
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.validation-errors-summary h4 {
  color: #dc3545;
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.validation-errors-summary ul {
  margin: 0;
  padding-left: 1.5rem;
  list-style-type: disc;
}

.validation-errors-summary li {
  color: #dc3545;
  margin-bottom: 0.25rem;
}

/* 必須マーク */
.required,
span.text-danger {
  color: #dc3545;
  font-weight: bold;
  margin-left: 0.25rem;
}

/* エラーフィールドのハイライト表示用 */
.field-error-highlight {
  background-color: #fee !important;
  transition: background-color 0.5s ease;
}

/* テキストエリアのエラースタイル */
textarea.form-control.is-invalid,
textarea.admin-input.is-invalid {
  background-position: right 0.75rem top 0.75rem;
}

/* チェックボックス・ラジオボタンのエラースタイル */
.form-check-input.is-invalid {
  border-color: #dc3545;
}

.form-check-input.is-invalid:checked {
  background-color: #dc3545;
  border-color: #dc3545;
}

.form-check-input.is-invalid ~ .form-check-label {
  color: #dc3545;
}

/* フォームグループ全体のエラー表示 */
.mb-3.has-error,
.col-md-6.has-error,
.col-md-4.has-error {
  position: relative;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .invalid-feedback {
    font-size: 0.8rem;
  }
  
  .form-control.is-invalid,
  .form-select.is-invalid,
  .admin-input.is-invalid {
    padding-right: calc(1em + 0.5rem);
    background-size: calc(0.65em + 0.25rem) calc(0.65em + 0.25rem);
  }
}

/* ============================================
   タイムライン表示（予約変更履歴用）
   ============================================ */

.timeline {
  position: relative;
  padding: 1rem 0;
  margin: 0;
}

.timeline-item {
  position: relative;
  padding-left: 3rem;
  padding-bottom: 2rem;
  border-left: 2px solid #e9ecef;
  margin-left: 1rem;
}

.timeline-item:last-child {
  border-left: 2px solid transparent;
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -1.25rem;
  top: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: white;
  border: 3px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  z-index: 1;
}

.timeline-marker.text-danger {
  color: #dc3545;
}

.timeline-marker.text-success {
  color: #28a745;
}

.timeline-marker.text-warning {
  color: #ffc107;
}

.timeline-marker.text-primary {
  color: #007bff;
}

.timeline-content {
  background: white;
  border: 1px solid #e9ecef;
  border-radius: 0.5rem;
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #e9ecef;
}

.timeline-body {
  color: #495057;
  line-height: 1.6;
}

.badge-text-danger {
  background-color: #f8d7da;
  color: #721c24;
}

.badge-text-success {
  background-color: #d4edda;
  color: #155724;
}

.badge-text-warning {
  background-color: #fff3cd;
  color: #856404;
}

.badge-text-primary {
  background-color: #d1ecf1;
  color: #0c5460;
}

/* タイムラインのレスポンシブ対応 */
@media (max-width: 768px) {
  .timeline-item {
    padding-left: 2.5rem;
  }
  
  .timeline-marker {
    left: -1rem;
    width: 2rem;
    height: 2rem;
    font-size: 0.85rem;
  }
  
  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}