/* =============================================
   RunningHub API Client — 深色主題 + 玻璃擬態
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ===== CSS 變數 ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(22, 22, 35, 0.8);
  --bg-card-hover: rgba(30, 30, 50, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-input-focus: rgba(255, 255, 255, 0.1);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-focus: rgba(108, 92, 231, 0.5);
  --text-primary: #e8e8f0;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --accent: #6C5CE7;
  --accent-glow: rgba(108, 92, 231, 0.25);
  --success: #00B894;
  --warning: #FDCB6E;
  --danger: #E17055;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 40px var(--accent-glow);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* 背景動態漸層 */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 20% 50%, rgba(108, 92, 231, 0.06) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(0, 184, 148, 0.04) 0%, transparent 50%),
              radial-gradient(circle at 40% 80%, rgba(225, 112, 85, 0.03) 0%, transparent 50%);
  z-index: -1;
  animation: bgShift 20s ease-in-out infinite;
}

@keyframes bgShift {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-2%, 1%); }
  66% { transform: translate(1%, -2%); }
}

/* ===== 頂部導航列 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 2rem;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
}

.navbar-brand .logo {
  font-size: 1.5rem;
}

.navbar-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

/* ===== 按鈕 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn:hover {
  background: var(--bg-input-focus);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #5A4BD1;
  box-shadow: var(--shadow-glow);
}

.btn-success {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: #00A381;
}

.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: rgba(225, 112, 85, 0.15);
}

.btn-icon {
  padding: 0.5rem;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* ===== 容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* ===== 頁面檢視切換 ===== */
.view {
  display: none;
  animation: fadeIn 0.4s ease;
}

.view.active {
  display: block;
}

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

/* ===== 卡片首頁 ===== */
.home-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.home-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* 卡片網格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* 卡片 */
.app-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.app-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.app-card:hover::before {
  opacity: 1;
}

.app-card-icon {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
  display: block;
}

.app-card-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
}

.app-card-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Fira Code', monospace;
  margin-bottom: 0.6rem;
  word-break: break-all;
}

.app-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.app-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--border-subtle);
}

.app-card-time {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.app-card-actions {
  display: flex;
  gap: 0.3rem;
}

.app-card-actions .btn {
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
}

/* 新增卡片按鈕 */
.add-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border: 2px dashed rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2rem;
  cursor: pointer;
  transition: var(--transition);
  min-height: 200px;
}

.add-card:hover {
  border-color: var(--accent);
  background: rgba(108, 92, 231, 0.05);
}

.add-card-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.4;
  transition: var(--transition);
}

.add-card:hover .add-card-icon {
  opacity: 0.8;
  transform: scale(1.1);
}

.add-card-text {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===== 空狀態 ===== */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.empty-state-text {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

/* ===== Modal 彈窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  animation: modalSlideUp 0.35s var(--transition-bounce);
}

@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.3rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

/* ===== 表單元素 ===== */
.form-group {
  margin-bottom: 1.2rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--border-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238888a0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2rem;
  cursor: pointer;
}

/* 圖示選擇器 */
.icon-picker {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.icon-option {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-glass);
}

.icon-option:hover {
  background: var(--bg-input);
}

.icon-option.selected {
  border-color: var(--accent);
  background: var(--accent-glow);
}

/* 顏色選擇器 */
.color-picker {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.color-option {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.color-option:hover {
  transform: scale(1.15);
}

.color-option.selected {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--bg-primary);
}

/* ===== 任務執行頁 ===== */
.task-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.task-header .back-btn {
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: var(--transition);
  background: none;
  border: none;
  color: var(--text-primary);
}

.task-header .back-btn:hover {
  opacity: 1;
}

.task-title-area {
  flex: 1;
}

.task-title-area h2 {
  font-size: 1.3rem;
  font-weight: 600;
}

.task-title-area .task-webapp-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
}

/* 節點卡片 */
.node-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  transition: var(--transition);
}

.node-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

.node-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}

/* 人類可讀的欄位名稱（description） */
.node-display-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

/* 右側小 badge 群組 */
.node-badges {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.node-id-badge {
  background: rgba(108, 92, 231, 0.15);
  color: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 600;
}

.node-type-badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem;
  border-radius: 20px;
  background: var(--bg-input);
  color: var(--text-secondary);
  font-weight: 600;
}

.node-type-badge.type-image { background: rgba(108, 92, 231, 0.2); color: #A29BFE; }
.node-type-badge.type-video { background: rgba(0, 184, 148, 0.2); color: #55EFC4; }
.node-type-badge.type-audio { background: rgba(253, 203, 110, 0.2); color: #FDCB6E; }
.node-type-badge.type-string { background: rgba(116, 185, 255, 0.2); color: #74B9FF; }
.node-type-badge.type-list { background: rgba(225, 112, 85, 0.2); color: #FF7675; }
.node-type-badge.type-int,
.node-type-badge.type-float { background: rgba(0, 206, 201, 0.2); color: #00CEC9; }

.node-field-wrapper {
  /* 表單欄位容器 */
}

.node-input {
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  transition: var(--transition);
  outline: none;
}

.node-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea.node-input {
  resize: vertical;
  min-height: 60px;
}

.node-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238888a0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2rem;
}

/* 檔案上傳 */
.file-upload-area {
  border: 2px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
  transition: var(--transition);
}

.file-input {
  display: none;
}

.file-upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.file-upload-btn:hover {
  background: var(--bg-input-focus);
  border-color: var(--accent);
}

.file-current {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  word-break: break-all;
}

.file-status {
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

.uploading { color: var(--warning); }
.upload-success { color: var(--success); }
.upload-error { color: var(--danger); }

.file-preview {
  margin-top: 0.6rem;
}

.preview-img {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.preview-video {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--radius-sm);
}

/* 布林切換 */
.bool-toggle {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.bool-checkbox {
  appearance: none;
  width: 44px;
  height: 24px;
  background: var(--bg-input);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border-subtle);
}

.bool-checkbox::after {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-secondary);
  position: absolute;
  top: 2px;
  left: 2px;
  transition: var(--transition);
}

.bool-checkbox:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.bool-checkbox:checked::after {
  transform: translateX(20px);
  background: #fff;
}

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

/* ===== 操作區 ===== */
.action-bar {
  display: flex;
  gap: 0.8rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

/* ===== 狀態顯示 ===== */
.status-area {
  margin-bottom: 2rem;
}

.status-bar {
  display: none;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.status-bar.active {
  display: flex;
}

.status-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.status-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.status-bar.success {
  border-color: rgba(0, 184, 148, 0.3);
}

.status-bar.success .status-text {
  color: var(--success);
}

.status-bar.error {
  border-color: rgba(225, 112, 85, 0.3);
}

.status-bar.error .status-text {
  color: var(--danger);
}

/* ===== 結果區 ===== */
.result-area {
  margin-bottom: 2rem;
}

.result-area h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.result-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
  overflow: hidden;
}

.result-image {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.result-video {
  width: 100%;
  max-height: 400px;
  border-radius: var(--radius-sm);
}

.result-audio {
  width: 100%;
}

.result-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.8rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.result-download {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.result-download:hover {
  text-decoration: underline;
}

/* ===== API Key 設定 ===== */
.settings-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.settings-panel h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.settings-row {
  display: flex;
  gap: 0.6rem;
  align-items: flex-end;
}

.settings-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

/* ===== 空提示 ===== */
.empty-hint {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
  font-size: 0.9rem;
}

/* ===== 響應式 ===== */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  }

  .navbar {
    padding: 0.6rem 1rem;
  }

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

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

  .task-header {
    flex-wrap: wrap;
  }

  .action-bar {
    flex-direction: column;
  }

  .settings-row {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .modal {
    width: 95%;
    border-radius: var(--radius-lg);
  }
}

/* ===== Toast 通知 ===== */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: #fff;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  max-width: 350px;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--accent); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

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

/* ===== 載入動畫 ===== */
.loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(4px);
  border-radius: inherit;
  z-index: 10;
}

.loading-dots {
  display: flex;
  gap: 0.4rem;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: loadingBounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes loadingBounce {
  0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ===== AI 助手側邊欄 ===== */
.chat-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  height: 100vh;
  height: 100dvh;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-subtle);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: -4px 0 32px rgba(0, 0, 0, 0.4);
}

.chat-sidebar.active {
  transform: translateX(0);
}

.chat-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 199;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.chat-backdrop.active {
  display: block;
}

/* 主內容讓位 */
body.chat-open main {
  margin-right: 360px;
  transition: margin-right 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border-subtle);
  font-weight: 600;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.chat-msg {
  display: flex;
}

.chat-msg-user {
  justify-content: flex-end;
}

.chat-msg-model {
  justify-content: flex-start;
}

.chat-bubble {
  max-width: 88%;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  line-height: 1.55;
  word-break: break-word;
}

.chat-msg-user .chat-bubble {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: var(--radius-sm);
}

.chat-msg-model .chat-bubble {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-bottom-left-radius: var(--radius-sm);
}

.chat-bubble-loading {
  padding: 0.8rem 1rem;
}

.chat-text {
  white-space: pre-wrap;
}

.chat-prompt-block {
  margin-top: 0.6rem;
  background: rgba(108, 92, 231, 0.1);
  border: 1px solid rgba(108, 92, 231, 0.3);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.chat-prompt-text {
  padding: 0.7rem 0.9rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.78rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.chat-apply-btn {
  width: 100%;
  border-radius: 0;
  justify-content: center;
  font-size: 0.8rem;
  padding: 0.5rem;
  border-top: 1px solid rgba(108, 92, 231, 0.3);
}

.chat-input-area {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.8rem 1rem;
  padding-bottom: calc(0.8rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.chat-textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  resize: none;
  outline: none;
  transition: var(--transition);
}

.chat-textarea:focus {
  border-color: var(--border-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* 圖片上傳按鈕 */
.chat-input-bar {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.chat-upload-btn {
  padding: 0.5rem 0.7rem;
  flex-shrink: 0;
  cursor: pointer;
}

/* 圖片預覽（發送前） */
.chat-image-preview {
  display: none;
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.4rem;
  align-items: flex-start;
  gap: 0.5rem;
}

.chat-image-preview.visible {
  display: flex;
}

.chat-image-preview img {
  max-height: 80px;
  max-width: 100%;
  border-radius: 4px;
  object-fit: contain;
}

.chat-image-clear {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  padding: 0;
  font-size: 0.7rem;
  background: rgba(0,0,0,0.6);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  line-height: 1;
}

/* 訊息中的圖片縮圖 */
.chat-msg-image {
  max-width: 200px;
  max-height: 160px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  display: block;
  margin-bottom: 0.4rem;
}

/* 側邊欄響應式：小螢幕時全寬 */
@media (max-width: 480px) {
  .chat-sidebar {
    width: 100vw;
    width: 100dvw;
  }
  body.chat-open main {
    margin-right: 0;
  }
}

/* ===== 管理員相關樣式 ===== */
.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-glass);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-danger-ghost {
  color: var(--danger);
}

.btn-danger-ghost:hover {
  background: rgba(225, 112, 85, 0.1);
  border-color: transparent;
}

.admin-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.8rem;
  background: rgba(253, 203, 110, 0.12);
  border: 1px solid rgba(253, 203, 110, 0.3);
  border-radius: var(--radius-sm);
  color: var(--warning);
  font-size: 0.82rem;
  font-weight: 600;
}

/* 小型 Modal（用於管理員登入）*/
.modal.modal-sm {
  max-width: 380px;
}

/* ===== 登入 Overlay ===== */
.login-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 900;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.login-overlay.active {
  display: flex;
}
.login-panel {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.login-logo {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 0.5rem;
}
.login-title {
  font-size: 1.4rem;
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.login-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1.75rem;
}
.login-switch {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
}
.login-switch a {
  color: var(--accent);
  text-decoration: none;
}
.login-switch a:hover {
  text-decoration: underline;
}
.auth-message {
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}
.auth-error {
  background: rgba(225, 112, 85, 0.12);
  border: 1px solid var(--danger);
  color: var(--danger);
}
.auth-success {
  background: rgba(0, 184, 148, 0.12);
  border: 1px solid var(--success);
  color: var(--success);
}

/* ===== 用戶徽章（navbar）===== */
.user-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.3rem 0.75rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

/* ===== 用戶管理 Modal ===== */
.user-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 420px;
  overflow-y: auto;
  padding-right: 0.25rem;
}
.user-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}
.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}
.user-name {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-status {
  font-size: 0.8rem;
  white-space: nowrap;
}
.user-status-pending  { color: var(--warning); }
.user-status-approved { color: var(--success); }
.user-status-rejected { color: var(--danger); }
.user-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.user-actions {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
}
.btn-sm {
  font-size: 0.78rem;
  padding: 0.25rem 0.6rem;
}