/* --- デザインシステム & 変数定義 --- */
:root {
  --font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  
  /* ライトテーマ */
  --bg-primary: #f6f8fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f3f8;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  
  --success: #10b981;
  --success-bg: #d1fae5;
  --danger: #ef4444;
  --danger-bg: #fee2e2;
  --warning: #f59e0b;
  --warning-bg: #fef3c7;
  
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --border-radius: 12px;
}

[data-theme="dark"] {
  /* ダークテーマ */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --border-color: #334155;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #312e81;
  
  --success: #34d399;
  --success-bg: #064e3b;
  --danger: #f87171;
  --danger-bg: #7f1d1d;
  --warning: #fbbf24;
  --warning-bg: #78350f;
  
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* --- ユーティリティ --- */
.hidden {
  display: none !important;
}

.text-muted {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* --- ローディングオーバーレイ --- */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 1s ease-in-out infinite;
}

.loading-text {
  color: #ffffff;
  margin-top: 15px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

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

/* --- 1. 認証画面 (パスコード入力) --- */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 450px;
  text-align: center;
}

.auth-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: inline-block;
  background: var(--primary-light);
  width: 80px;
  height: 80px;
  line-height: 80px;
  border-radius: 50%;
}

.auth-card h2 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.auth-subtitle {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-weight: 500;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-family);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.auth-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 25px;
  background-color: var(--bg-tertiary);
  padding: 12px;
  border-radius: var(--border-radius);
}

/* --- 2. アプリ本体 --- */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --- ヘッダー --- */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 15px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo-icon {
  font-size: 2.2rem;
  background: var(--primary-light);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.logo-text h1 {
  font-size: 1.25rem;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* --- ボタン --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  border: none;
  font-family: var(--font-family);
  transition: all 0.2s;
  white-space: nowrap;
}

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

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

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

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

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--bg-tertiary);
}

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

.btn-text:hover {
  background-color: var(--bg-tertiary);
}

.btn-danger-outline {
  background-color: transparent;
  border: 1.5px solid var(--danger);
  color: var(--danger);
}

.btn-danger-outline:hover {
  background-color: var(--danger-bg);
}

.btn-block {
  width: 100%;
}

/* --- メインコンテンツ --- */
.app-main {
  flex: 1;
  padding: 30px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 8px;
}

.section-header h3 {
  font-size: 1.35rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* --- ダッシュボード --- */
.dashboard-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 25px;
  margin-bottom: 30px;
  box-shadow: var(--card-shadow);
}

.status-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 25px;
}

.summary-card {
  padding: 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.card-alert {
  background-color: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger);
}

.card-safe {
  background-color: var(--success-bg);
  color: var(--success);
  border-color: var(--success);
}

.card-warn {
  background-color: var(--warning-bg);
  color: var(--warning);
  border-color: var(--warning);
}

.summary-card .card-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.summary-card .card-value {
  font-size: 2.2rem;
  font-weight: 700;
}

.summary-card .card-desc {
  font-size: 0.8rem;
  opacity: 0.9;
}

.sub-section-title {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 15px;
  font-weight: 600;
}

.location-counts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.location-count-card {
  background-color: var(--bg-tertiary);
  padding: 12px 16px;
  border-radius: 8px;
  text-align: center;
  border: 1px solid var(--border-color);
}

.location-count-card .loc-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.location-count-card .loc-val {
  font-size: 1.5rem;
  font-weight: 700;
}

.location-count-card .unit {
  font-size: 0.75rem;
  font-weight: normal;
  margin-left: 2px;
}

/* --- 操作パネル --- */
.action-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  align-items: center;
  margin-bottom: 30px;
}

.search-box-wrapper {
  position: relative;
  flex: 1;
  min-width: 280px;
}

.search-box-wrapper .search-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}

.search-box-wrapper input {
  width: 100%;
  padding: 12px 16px 12px 45px;
  border: 2px solid var(--border-color);
  border-radius: 30px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  font-family: var(--font-family);
  transition: all 0.2s;
}

.search-box-wrapper input:focus {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.filter-wrapper {
  display: flex;
  gap: 5px;
  background-color: var(--bg-secondary);
  padding: 5px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  overflow-x: auto;
}

.filter-btn {
  padding: 8px 18px;
  border: none;
  border-radius: 20px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.active {
  background-color: var(--primary);
  color: #ffffff;
}

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

/* --- 車椅子グリッド --- */
.wheelchair-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

/* --- 車椅子カード (3Dフリップアニメーション付) --- */
.wheelchair-card {
  perspective: 1000px;
  height: 230px; /* カードの高さを固定 */
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.card-inner.flipped {
  transform: rotateY(180deg);
}

.card-front, .card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  display: flex;
  flex-direction: column;
}

/* フロント面 */
.card-front {
  justify-content: space-between;
}

.card-facility {
  border-left: 6px solid var(--primary);
}

.card-personal {
  border-left: 6px solid var(--warning);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 10px;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.status-badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-available {
  background-color: var(--success-bg);
  color: var(--success);
}

.status-occupied {
  background-color: var(--primary-light);
  color: var(--primary);
}

.status-shared {
  background-color: var(--warning-bg);
  color: var(--warning);
}

.status-maintenance {
  background-color: var(--danger-bg);
  color: var(--danger);
}

.card-body {
  margin: 15px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.info-row {
  display: flex;
  gap: 8px;
  font-size: 0.9rem;
}

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

.info-value {
  font-weight: 500;
}

.location-highlight {
  background-color: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.card-actions {
  display: flex;
  gap: 10px;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

.card-actions .btn {
  flex: 1;
  padding: 8px;
  font-size: 0.8rem;
}

/* クイック移動バック面 (裏面) */
.card-back {
  transform: rotateY(180deg);
  background-color: var(--bg-secondary);
  border: 2px solid var(--primary);
}

.card-back .card-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
  width: 100%;
}

.btn-close-back {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.quick-move-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 15px 0;
  flex: 1;
  align-content: center;
}

.quick-loc-btn {
  padding: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
}

.quick-loc-btn:hover {
  border-color: var(--primary);
  background-color: var(--primary-light);
  color: var(--primary);
}

.quick-loc-btn.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  pointer-events: none;
}

.card-back-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 10px;
}

.no-data {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
  grid-column: 1 / -1;
  font-size: 1rem;
}

/* --- 履歴ログ --- */
.history-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 25px;
  box-shadow: var(--card-shadow);
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 400px;
  overflow-y: auto;
}

.history-item {
  padding: 12px 16px;
  border-radius: 8px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.hist-header {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-size: 0.75rem;
  font-weight: 500;
}

.hist-body {
  color: var(--text-primary);
  line-height: 1.4;
}

.loc-badge {
  background-color: var(--bg-tertiary);
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.loc-to {
  background-color: var(--primary-light);
  color: var(--primary);
}

.hist-users-info {
  display: block;
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-style: italic;
}

/* --- フッター --- */
.app-footer {
  text-align: center;
  padding: 30px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  margin-top: 50px;
}

/* --- 詳細編集モーダル --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border-radius: 16px;
  width: 90%;
  max-width: 700px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.modal-overlay.show .modal-card {
  transform: scale(1);
}

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

.modal-close-x {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.form-row-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

/* 入居者選択チェックボックスグリッド */
.edit-users-container {
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 15px;
  background-color: var(--bg-primary);
  max-height: 250px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.floor-section {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.floor-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.floor-title {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 700;
  border-left: 3px solid var(--primary);
  padding-left: 6px;
}

.residents-chk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
}

.resident-chk-label {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-secondary);
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s;
}

.resident-chk-label:hover {
  border-color: var(--primary);
}

.resident-chk-label.selected {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.resident-chk-label input {
  width: auto;
  cursor: pointer;
}

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

/* --- レスポンシブ設計 --- */
@media (max-width: 768px) {
  .app-header {
    padding: 15px;
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
    text-align: center;
  }
  
  .header-logo {
    justify-content: center;
  }
  
  .header-actions {
    justify-content: center;
  }

  .app-main {
    padding: 15px;
  }

  .form-row-grid {
    grid-template-columns: 1fr;
  }

  .action-panel {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box-wrapper {
    min-width: 100%;
  }

  .filter-wrapper {
    justify-content: flex-start;
  }

  .utility-actions {
    width: 100%;
  }

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

  .wheelchair-grid {
    grid-template-columns: 1fr;
  }
}