/* ===================
   カスタムプロパティ
   =================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-dark: #1e293b;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border: #e2e8f0;
    --border-dark: #cbd5e1;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1);
    
    --radius-sm: 0;
    --radius: 0;
    --radius-lg: 0;
    
}

/* ===================
   ベーススタイル
   =================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    font-weight: 400;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "palt";
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-dark);
}

/* タイポグラフィ強化 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: 0.03em;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

/* ===================
   ナビゲーション
   =================== */
.navbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    gap: 1rem;
}

.nav-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
    margin-right: 1rem;
}

.nav-right .btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
}

.hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger-menu span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

.hamburger-menu:hover span {
    background: var(--primary);
}

.nav-brand a {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.1em;
}

/* サイドバー */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 199;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.sidebar-overlay.open {
    opacity: 1;
    visibility: visible;
}

.sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100%;
    background: var(--bg-card);
    z-index: 200;
    transition: left 0.3s ease;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.sidebar.open {
    left: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 1rem;
}

.sidebar-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
}

.sidebar-close:hover {
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.625rem;
    padding: 0.875rem 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    min-width: 0;
}

.sidebar-nav a:hover {
    background: var(--bg-main);
    color: var(--text-primary);
}

.sidebar-nav a.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-nav a .badge-count {
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    font-weight: 600;
    border-radius: 999px;
    margin-left: auto;
    flex-shrink: 0;
    white-space: nowrap;
}

.sidebar-nav a.nav-admin {
    color: var(--text-primary);
    font-weight: 600;
}

.sidebar-nav a.nav-admin.active {
    background: rgba(30, 41, 59, 0.1);
    border-left-color: var(--text-primary);
}

.sidebar-divider {
    height: 1px;
    background: var(--border);
    margin: 0.5rem 0;
}

/* サイドバーグループラベル */
.sidebar-group-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 1rem 1.25rem 0.5rem;
    margin-top: 0.5rem;
    border-top: 1px solid var(--border);
}

.sidebar-group-label:first-child {
    margin-top: 0;
    border-top: none;
}

.sidebar-group-label.admin-label {
    color: var(--primary);
    background: linear-gradient(to right, rgba(37, 99, 235, 0.08), transparent);
}

/* サイドバーカテゴリ（アコーディオン） */
.sidebar-category {
    display: flex;
    flex-direction: column;
}

.sidebar-category-toggle {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.625rem;
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: none;
    border: none;
    border-left: 3px solid transparent;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
    min-width: 0;
}

.sidebar-category-toggle:hover {
    background: var(--bg-main);
}

.sidebar-category-toggle.active {
    background: rgba(37, 99, 235, 0.05);
    border-left-color: var(--primary);
    color: var(--primary);
}

.sidebar-category-toggle .badge-count,
.sidebar-category-toggle .menu-badge {
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
    margin-left: 0;
    flex-shrink: 0;
    white-space: nowrap;
}

/* メニューアイテム内のインラインバッジ */
.menu-badge-inline {
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
    margin-left: auto;
    flex-shrink: 0;
    white-space: nowrap;
}

.menu-badge-inline.warning {
    background: var(--warning);
}

.menu-label {
    min-width: 0;
}

.category-arrow {
    font-size: 0.7rem;
    transition: transform 0.2s;
    color: var(--text-secondary);
    margin-left: auto;
    flex-shrink: 0;
}

.sidebar-category-toggle.open .category-arrow {
    transform: rotate(180deg);
}

.sidebar-category-items {
    display: none;
    flex-direction: column;
    background: var(--bg-main);
}

.sidebar-category-items.open {
    display: flex;
}

.sidebar-category-items a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.65rem 1.25rem 0.65rem 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    min-width: 0;
}

.sidebar-category-items a .menu-badge,
.sidebar-category-items a .menu-badge-inline {
    margin-left: auto;
    flex-shrink: 0;
    white-space: nowrap;
}

.sidebar-category-items a:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.sidebar-category-items a.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

/* サブカテゴリ（ネストされたカテゴリ） */
.sidebar-subcategory {
    margin-bottom: 0.5rem;
}

.sidebar-subcategory:last-child {
    margin-bottom: 0;
}

.subcategory-label {
    padding: 0.4rem 1.25rem 0.3rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(0, 0, 0, 0.03);
    border-top: 1px solid var(--border);
    margin-top: 0.25rem;
}

.sidebar-subcategory:first-child .subcategory-label {
    border-top: none;
    margin-top: 0;
}

.sidebar-subcategory a {
    padding-left: 2.5rem !important;
    font-size: 0.85rem !important;
}

/* サイドバーサブメニュー */
.sidebar-submenu {
    display: flex;
    flex-direction: column;
}

.sidebar-submenu-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: none;
    border: none;
    border-left: 3px solid transparent;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.sidebar-submenu-toggle:hover {
    background: var(--bg-main);
}

.sidebar-submenu-toggle.active {
    background: rgba(30, 41, 59, 0.1);
    border-left-color: var(--text-primary);
}

.sidebar-submenu-toggle .badge-count {
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
    margin-right: auto;
    margin-left: 8px;
}

.submenu-arrow {
    font-size: 0.7rem;
    transition: transform 0.2s;
    color: var(--text-secondary);
}

.sidebar-submenu-toggle.active .submenu-arrow,
.sidebar-submenu-items.open + .sidebar-submenu-toggle .submenu-arrow {
    transform: rotate(180deg);
}

.sidebar-submenu-items {
    display: none;
    flex-direction: column;
    background: var(--bg-main);
}

.sidebar-submenu-items.open {
    display: flex;
}

.sidebar-submenu-items a {
    display: block;
    padding: 0.65rem 1.25rem 0.65rem 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-submenu-items a:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.sidebar-submenu-items a.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

body.sidebar-open {
    overflow: hidden;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
    border: 1px solid var(--border);
    background: var(--bg-card);
}

.user-menu-trigger:hover {
    background: var(--bg-main);
}

.user-menu-trigger .user-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.user-menu-trigger .user-badge {
    padding: 0.15rem 0.4rem;
    border-radius: 0;
    font-size: 0.65rem;
    font-weight: 600;
    background: var(--text-primary);
    color: white;
}

.user-menu-trigger .user-badge.owner {
    background: #b91c1c;
}

.user-menu-trigger .menu-arrow {
    font-size: 0.65rem;
    color: var(--text-muted);
    transition: transform 0.2s;
}

.nav-user:hover .menu-arrow,
.nav-user.open .menu-arrow {
    transform: rotate(180deg);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s;
    z-index: 200;
}

.nav-user:hover .user-dropdown,
.nav-user.open .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown a {
    display: block;
    padding: 0.625rem 1rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: background 0.15s;
}

.user-dropdown a:hover {
    background: var(--bg-main);
}

.user-dropdown a:first-child {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.user-dropdown a:last-child {
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    color: var(--danger);
}

.user-dropdown .divider {
    height: 1px;
    background: var(--border);
    margin: 0.25rem 0;
}

.btn-profile {
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.btn-profile:hover {
    background: var(--bg-main);
}

.btn-logout {
    padding: 0.5rem 1rem;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.btn-logout:hover {
    background: var(--danger);
    color: white;
}

/* ===================
   コンテナ
   =================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* ===================
   アラート
   =================== */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.5;
}

.alert-close:hover {
    opacity: 1;
}

/* ===================
   認証ページ
   =================== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    padding: 2rem;
}

.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 3rem;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-form .form-group {
    margin-bottom: 1.25rem;
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.auth-footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* ===================
   フォーム
   =================== */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-group .form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

.form-group .form-help.highlight-success {
    color: var(--success);
    font-weight: 500;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
}

.form-section {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.form-section h2 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.result-field .calculated-value {
    font-size: 1.5rem;
    font-weight: 700;
    padding: 0.75rem;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
    text-align: center;
}

.current-photo {
    margin-top: 0.5rem;
}

.current-photo img {
    max-width: 150px;
    border-radius: var(--radius-sm);
}

/* ===================
   ボタン
   =================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-family: inherit;
}

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

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

.btn-primary:disabled {
    background: var(--primary);
    cursor: wait;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-loading::before {
    content: '';
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.btn-secondary {
    background: var(--bg-main);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.35rem 0.6rem;
    font-size: 0.75rem;
}

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

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

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

.btn-search {
    padding: 0.75rem 1rem;
}

/* ===================
   ページヘッダー
   =================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
}

.page-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* ===================
   統計カード
   =================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.stat-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-main);
    border-radius: var(--radius);
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===================
   フィルターバー
   =================== */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    font-size: 0.875rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.search-form {
    display: flex;
    flex: 1 1 420px;
    width: min(100%, 640px);
    max-width: 640px;
    min-width: 280px;
}

.search-form input {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    border-right: none;
}

.search-form button {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ===================
   商品カード
   =================== */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.item-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.item-card.item-sold {
    opacity: 0.6;
    filter: grayscale(100%);
}

.item-card.item-sold:hover {
    opacity: 0.8;
    filter: grayscale(50%);
}

.item-image {
    position: relative;
    height: 200px;
    background: var(--bg-main);
}

.item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.no-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-muted);
}

.item-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.item-badge.sold {
    background: var(--success);
    color: white;
}

.item-badge.listed {
    background: var(--info);
    color: white;
}

.item-content {
    padding: 1rem;
}

.item-name {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-store,
.item-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.item-prices {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.25rem 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
}

.price-label {
    color: var(--text-secondary);
}

.price-value {
    font-weight: 600;
    text-align: right;
}

.item-actions {
    padding: 0.75rem 1rem;
    background: var(--bg-main);
    display: flex;
    gap: 0.5rem;
    border-top: 1px solid var(--border);
}

.item-actions .btn {
    flex: 1;
}

/* ===================
   利益表示
   =================== */
.profit-positive {
    color: var(--success);
}

.profit-negative {
    color: var(--danger);
}

/* ===================
   空の状態
   =================== */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* ===================
   詳細ビュー
   =================== */
.view-container {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
}

.view-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.no-image-large {
    width: 100%;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-muted);
    background: var(--bg-main);
}

.view-details {
    padding: 2rem;
}

.view-details h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.detail-section {
    margin-bottom: 1.5rem;
}

.detail-section h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.detail-list {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 0.5rem;
}

.detail-list dt {
    color: var(--text-secondary);
}

.detail-list dd {
    font-weight: 500;
}

/* ===================
   バッジ
   =================== */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-listed {
    background: var(--info);
    color: white;
}

.badge-pending {
    background: var(--bg-main);
    color: var(--text-secondary);
}

.badge-shipped {
    background: var(--success);
    color: white;
}

.badge-sold {
    background: var(--success);
    color: white;
}

.badge-admin {
    background: #1e293b;
    color: white;
}

.badge-user {
    background: var(--bg-main);
    color: var(--text-secondary);
}

/* ===================
   顧客カード
   =================== */
.customers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.customer-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.customer-info {
    padding: 0 1rem;
}

.customer-info h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.customer-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.customer-stats {
    display: flex;
    padding: 1rem;
    background: var(--bg-main);
    margin-top: 1rem;
}

.customer-stats .stat {
    flex: 1;
    text-align: center;
}

.customer-stats .stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    display: block;
}

.customer-stats .stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.customer-actions {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border);
}

.customer-actions .btn {
    flex: 1;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===================
   管理者ページ
   =================== */
.admin-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: var(--bg-card);
    padding: 0.75rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.admin-nav-item {
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.admin-nav-item:hover,
.admin-nav-item.active {
    background: var(--primary);
    color: white;
}

.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.admin-stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.admin-section {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.admin-section h2 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.admin-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

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

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

.admin-table th,
.admin-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.admin-table th {
    background: var(--bg-main);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.admin-table td small {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
}

.admin-table .row-sold {
    background: #f8fafc;
}

.table-thumbnail {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.no-thumb {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.empty-cell {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem !important;
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.admin-list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
}

.list-rank {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: white;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.list-name {
    flex: 1;
    font-weight: 500;
}

.list-value {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.empty-message {
    color: var(--text-muted);
    text-align: center;
    padding: 1rem;
}

/* 分析カード */
.analytics-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.analytics-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-main);
    border-radius: var(--radius);
}

.analytics-icon {
    font-size: 2rem;
}

.analytics-content h4 {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.analytics-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.analytics-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.bar-chart {
    width: 100%;
    height: 20px;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.bar-chart .bar {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-sm);
    min-width: 5px;
}

.insights {
    background: #1e293b;
    color: white;
}

.insights h2 {
    color: white;
    border-color: rgba(255,255,255,0.3);
}

.insight-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.insight-card {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: var(--radius);
}

.insight-card h4 {
    margin-bottom: 0.5rem;
}

.insight-card p {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ヘルプグリッド */
.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.help-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-main);
    border-radius: var(--radius);
}

.help-icon {
    font-size: 1.5rem;
}

.help-item strong {
    display: block;
    margin-bottom: 0.25rem;
}

.help-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* フォームコンテナ */
.form-container {
    max-width: 600px;
}

.form-static {
    padding: 0.75rem 1rem;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* ===================
   バックアップページ
   =================== */
.backup-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.section-desc {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.backup-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.backup-option {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-main);
    border-radius: var(--radius);
    border: 2px solid transparent;
}

.backup-option.highlight {
    background: #f8fafc;
    border-color: var(--primary);
}

.backup-icon {
    font-size: 2.5rem;
}

.backup-content h3 {
    margin-bottom: 0.5rem;
}

.backup-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.import-form .form-group {
    margin-bottom: 1.5rem;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-option {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.radio-option:hover {
    background: var(--border);
}

.radio-option input[type="radio"] {
    margin-top: 0.25rem;
}

.radio-label {
    display: flex;
    flex-direction: column;
}

.radio-label strong {
    margin-bottom: 0.25rem;
}

.radio-label small {
    color: var(--text-secondary);
}

.warning-section {
    background: #fef3c7;
    border-color: #f59e0b;
}

.warning-list {
    list-style: disc;
    padding-left: 1.5rem;
}

.warning-list li {
    margin-bottom: 0.5rem;
    color: #92400e;
}

.tip-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.tip-card {
    text-align: center;
    padding: 1.5rem 1rem;
    background: var(--bg-main);
    border-radius: var(--radius);
}

.tip-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.75rem;
}

.tip-card h4 {
    margin-bottom: 0.5rem;
}

.tip-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

@media (max-width: 1200px) {
    .backup-grid {
        grid-template-columns: 1fr;
    }
    
    .tip-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* ===================
   プロフィール
   =================== */
.profile-container {
    max-width: 600px;
}

.profile-form .form-section {
    margin-bottom: 1.5rem;
}

/* ===================
   レスポンシブ
   =================== */
@media (max-width: 1200px) {
    .stats-grid,
    .admin-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-grid-2 {
        grid-template-columns: 1fr;
    }
    
    .insight-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0;
    }
    
    .nav-container {
        padding: 0.5rem 0.75rem;
    }
    
    .nav-brand a {
        font-size: 1rem;
    }
    
    .nav-user {
        gap: 0.25rem;
    }
    
    .user-name {
        max-width: 100px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .page-actions {
        justify-content: center;
    }
    
    .stats-grid,
    .admin-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .search-form {
        max-width: none;
    }
    
    .items-grid {
        grid-template-columns: 1fr;
    }
    
    .view-container {
        grid-template-columns: 1fr;
    }
    
    .view-image {
        height: 250px;
    }
    
    .page-header {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
    
    .page-header h1,
    .page-title {
        font-size: 1.1rem;
    }
    
    .admin-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    /* スマホ用コンテナ調整 */
    .container {
        padding: 0.75rem;
    }
    
    /* スマホ用フォームセクション（書類作成画面用） */
    .form-section {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .form-section h2 {
        font-size: 0.95rem;
        margin-bottom: 0.6rem;
        padding-bottom: 0.4rem;
    }
    
    .form-group {
        margin-bottom: 0.6rem;
    }
    
    .form-group label {
        font-size: 0.8rem;
        margin-bottom: 0.25rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.4rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .form-group input[type="date"] {
        padding: 0.4rem 0.5rem;
        font-size: 0.8rem;
        min-width: 110px;
        width: auto;
        -webkit-appearance: none;
        appearance: none;
    }
    
    .form-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    
    .form-actions {
        margin-top: 1rem;
        padding-top: 1rem;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    
    .form-actions .btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .header-actions .btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
    }
    
    /* スマホ用ボタン調整 */
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    
    .btn-sm {
        padding: 0.3rem 0.5rem;
        font-size: 0.7rem;
    }
}

/* ===================
   支払い遅延警告バナー
   =================== */
.payment-warning-banner {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-bottom: 2px solid #ef4444;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    position: sticky;
    top: 56px;
    z-index: 999;
}

.payment-warning-banner .warning-icon {
    font-size: 1.25rem;
}

.payment-warning-banner .warning-text {
    color: #991b1b;
    font-weight: 500;
    font-size: 0.9rem;
}

.payment-warning-banner .warning-link {
    background: #ef4444;
    color: white;
    padding: 0.35rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background 0.2s;
}

.payment-warning-banner .warning-link:hover {
    background: #dc2626;
}

.payment-warning-banner .warning-link.disposal-link {
    background: #f59e0b;
}

.payment-warning-banner .warning-link.disposal-link:hover {
    background: #d97706;
}

@media (max-width: 768px) {
    .payment-warning-banner {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
    }
    
    .payment-warning-banner .warning-text {
        font-size: 0.8rem;
    }
}

/* ========== 未払いユーザー強調表示 ========== */
.row-unpaid {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%) !important;
    border-left: 4px solid #ef4444 !important;
}

.row-unpaid td {
    color: #991b1b;
}

.row-overdue-warning {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%) !important;
    border-left: 4px solid #f59e0b !important;
}

.row-overdue-danger {
    background: linear-gradient(135deg, #fff1f2 0%, #fecdd3 100%) !important;
    border-left: 4px solid #f43f5e !important;
    animation: pulse-warning 2s infinite;
}

.row-overdue-critical {
    background: linear-gradient(135deg, #fef2f2 0%, #fca5a5 100%) !important;
    border-left: 4px solid #dc2626 !important;
    animation: pulse-critical 1s infinite;
}

@keyframes pulse-warning {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

@keyframes pulse-critical {
    0%, 100% { opacity: 1; background-color: #fef2f2; }
    50% { opacity: 0.9; background-color: #fecaca; }
}

/* 未払い期間バッジ */
.overdue-period {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.overdue-period.info {
    background: #e0f2fe;
    color: #0369a1;
}

.overdue-period.warning {
    background: #fef3c7;
    color: #92400e;
}

.overdue-period.danger {
    background: #fecdd3;
    color: #be123c;
}

.overdue-period.critical {
    background: #ef4444;
    color: white;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* 強制移管対象バッジ */
.badge-critical {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 4px;
    animation: pulse-badge 1.5s infinite;
}

.badge-danger {
    background: linear-gradient(135deg, #f43f5e 0%, #be123c 100%);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 4px;
}

@keyframes pulse-badge {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}