:root {
  color-scheme: dark;
  --bg-main: #060b14;
  --bg-card: rgba(15, 23, 42, 0.78);
  --bg-card-hover: rgba(26, 38, 66, 0.9);
  --bg-subcard: rgba(10, 16, 30, 0.85);
  --border-line: rgba(56, 189, 248, 0.18);
  --border-glow: rgba(56, 189, 248, 0.45);
  
  --primary-cyan: #38bdf8;
  --primary-blue: #0284c7;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --color-warn: #f59e0b;
  --color-danger: #f43f5e;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-sans: 'Outfit', 'Inter', 'Noto Sans TC', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

body {
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(14, 116, 144, 0.22) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(30, 58, 138, 0.22) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.5) 0px, transparent 100%);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.5;
}

/* 氛圍背景光點 (無昂貴 Gaussian blur 著色器，避免行動裝置 WebKit 記憶體崩潰) */
.bg-glow {
  position: fixed;
  width: 550px;
  height: 550px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.25;
}
.bg-glow.top-left {
  top: -180px;
  left: -180px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.35) 0%, rgba(2, 132, 199, 0.08) 45%, transparent 70%);
}
.bg-glow.bottom-right {
  bottom: -180px;
  right: -180px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.35) 0%, rgba(124, 58, 237, 0.08) 45%, transparent 70%);
}

.admin-container {
  width: min(1240px, 94vw);
  margin: 0 auto;
  padding: 30px 0 80px;
  position: relative;
  z-index: 1;
}

/* 頂部全域 Header */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 24px;
}

.header-brand-group {
  flex: 1;
  min-width: 280px;
}

.brand-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary-cyan);
  letter-spacing: 0.06em;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}
.status-pill.ok {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}
.status-pill.warn {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fbbf24;
}
.status-pill.purple {
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.35);
  color: #c084fc;
}

.header-title {
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.25;
}

.header-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* 現代化按鈕體系 */
.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #0284c7);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(30, 41, 59, 0.7);
  color: #f1f5f9;
  border-color: rgba(255, 255, 255, 0.12);
}
.btn-secondary:hover {
  background: rgba(51, 65, 85, 0.85);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-cyan);
  border-color: rgba(56, 189, 248, 0.4);
}
.btn-outline:hover {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--primary-cyan);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: #f43f5e;
  border-color: rgba(244, 63, 94, 0.35);
}
.btn-danger:hover {
  background: rgba(244, 63, 94, 0.25);
  border-color: #f43f5e;
}

.btn-purple {
  background: linear-gradient(135deg, #9333ea, #7c3aed);
  color: #fff;
  border-color: rgba(168, 85, 247, 0.4);
  box-shadow: 0 4px 14px rgba(147, 51, 234, 0.35);
}
.btn-purple:hover {
  box-shadow: 0 6px 20px rgba(147, 51, 234, 0.5);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.78rem;
  border-radius: 8px;
}

/* 訊息橫幅 */
.message-banner {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
  padding: 12px 18px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: fadeIn 0.3s ease;
}

/* 水平平滑滑動分頁列 */
.tabs-scroll-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 20px;
  padding-bottom: 4px;
}
.tabs-scroll-wrapper::-webkit-scrollbar {
  height: 4px;
}
.tabs-scroll-wrapper::-webkit-scrollbar-thumb {
  background: rgba(56, 189, 248, 0.2);
  border-radius: 4px;
}

.admin-tabs {
  display: flex;
  gap: 8px;
  width: max-content;
  background: var(--bg-subcard);
  border: 1px solid var(--border-divider);
  padding: 6px;
  border-radius: 14px;
}

.tab-item {
  display: flex;
  align-items: center;
  gap: 7px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.tab-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}
.tab-item.active {
  background: #0284c7;
  color: #fff;
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}
.tab-icon {
  font-size: 1rem;
}

/* 主面板大卡片 */
.admin-main-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  position: relative;
}

.panel-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.panel-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.01em;
}

.panel-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.45;
}

.action-btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* 測點清單表格 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.nodes-table-header {
  display: grid;
  grid-template-columns: 1.5fr 1.6fr 1.6fr 1fr 100px;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-table-head);
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.node-editor-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nodeRow {
  display: grid;
  grid-template-columns: 1.5fr 1.6fr 1.6fr 1fr 100px;
  gap: 12px;
  align-items: center;
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  padding: 10px 14px;
  border-radius: 12px;
  transition: border-color 0.2s ease;
}
.nodeRow:hover {
  border-color: rgba(56, 189, 248, 0.3);
}

.nodeRow input {
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.nodeRow input:focus {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.nodeRow button {
  background: rgba(244, 63, 94, 0.15);
  color: #f43f5e;
  border: 1px solid rgba(244, 63, 94, 0.35);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.nodeRow button:hover {
  background: rgba(244, 63, 94, 0.28);
  border-color: #f43f5e;
}

/* 決策規則卡片 */
.rules-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ruleCard {
  background: var(--bg-subcard);
  border: 1px solid var(--border-divider);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: border-color 0.2s ease;
}
.ruleCard:hover {
  border-color: rgba(56, 189, 248, 0.35);
}

.ruleHeader {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.ruleGrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.ruleField {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.ruleRowFlex {
  display: flex;
  gap: 6px;
  align-items: center;
}

.form-input, .form-select, .ruleCard input, .ruleCard select {
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  transition: all 0.2s ease;
}
.form-input:focus, .form-select:focus, .ruleCard input:focus, .ruleCard select:focus {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.deviceChecks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.deviceCheckLabel {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-subcard);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s;
}
.deviceCheckLabel:hover {
  border-color: var(--primary-cyan);
  background: rgba(56, 189, 248, 0.1);
}
.deviceCheckLabel input {
  margin: 0;
  width: auto;
  accent-color: #0284c7;
}

/* 決策日誌列表 */
.logs-container {
  max-height: 400px;
  overflow-y: auto;
  background: var(--bg-logs);
  border: 1px solid var(--border-divider);
  border-radius: 12px;
  padding: 12px;
}

.logItem {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.logItem:last-child {
  border-bottom: none;
}
.logHeaderRow {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.logTime {
  color: var(--primary-cyan);
  font-weight: 700;
  font-size: 0.78rem;
}
.logRule {
  color: var(--color-warn);
  font-weight: 800;
}
.logAction {
  color: #34d399;
  font-weight: 700;
  font-size: 0.82rem;
}

/* 子卡片 (Wi-Fi, OTA 等) */
.sub-card {
  background: var(--bg-subcard);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 20px;
}
.sub-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.sub-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-heading);
}

/* 統計方塊網格 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
}
.stat-box {
  background: var(--bg-zero);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px 14px;
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.stat-val {
  font-size: 1.15rem;
  font-weight: 800;
  display: block;
  font-family: 'Outfit', sans-serif;
}
.text-cyan { color: var(--primary-cyan); }
.text-white { color: #fff; }
.text-green { color: #34d399; }
.text-purple { color: #c084fc; }
.text-muted { color: var(--text-muted); }

/* 模式切換按鈕群 (Wi-Fi Normal vs Eduroam) */
.mode-toggle-group {
  display: flex;
  gap: 8px;
  background: var(--bg-zero);
  border: 1px solid var(--border-divider);
  padding: 4px;
  border-radius: 10px;
  max-width: 440px;
}
.mode-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.mode-btn.active {
  background: #0284c7;
  color: #fff;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.4);
}

/* 表單柵格系統 */
.form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group.full-col {
  grid-column: 1 / -1;
}
.form-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}
.form-input, .form-select {
  width: 100%;
}

/* OTA 上傳區 */
.ota-upload-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.file-input {
  flex: 1;
  min-width: 220px;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
}
.progress-bar-container {
  background: var(--bg-zero);
  border: 1px solid var(--border-input);
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
  margin-top: 14px;
}
.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #9333ea, #a855f7);
  transition: width 0.2s ease;
}

/* 提示警示框 */
.alert-box {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 0.85rem;
}
.alert-box.amber {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
}
.alert-icon {
  font-size: 1.2rem;
}
.alert-content {
  line-height: 1.45;
}

/* 底部常駐控制列 */
.form-bottom-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--border-divider);
}

/* 通用邊距輔助類 */
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }

/* 登入 Dialog 彈窗 */
.modal-dialog {
  border: 0;
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  background: transparent;
  width: min(440px, 92vw);
  margin: auto;
  padding: 0;
}
.modal-dialog::backdrop {
  background: rgba(3, 7, 18, 0.85);
}
.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 18px;
  padding: 24px;
  position: relative;
  box-sizing: border-box;
}
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  position: relative;
  padding-right: 48px;
}
.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-top: 4px;
}
.btn-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #f8fafc;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 30;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}
.btn-close:hover, .btn-close:active {
  background: rgba(244, 63, 94, 0.4);
  border-color: rgba(244, 63, 94, 0.8);
  color: #fff;
  transform: scale(1.08);
}
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* ====== 設備詳細資料面板專用樣式 ====== */
.topology-container {
  position: relative;
  padding: 10px 0;
}
.topo-center-area {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}
.topo-hub-card {
  position: relative;
  background: linear-gradient(135deg, rgba(14, 116, 144, 0.35) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--primary-cyan);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.22);
  border-radius: 16px;
  padding: 18px 24px;
  width: min(520px, 100%);
}
.topo-hub-card.offline {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.98) 100%);
  border-color: rgba(244, 63, 94, 0.4);
  box-shadow: 0 0 25px rgba(244, 63, 94, 0.15);
}
.topo-hub-card.offline .topo-badge-hub {
  background: rgba(244, 63, 94, 0.15);
  color: #f87171;
  border-color: rgba(244, 63, 94, 0.35);
}
.topo-badge-hub {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  background: rgba(56, 189, 248, 0.2);
  color: var(--primary-cyan);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.3);
}
.topo-hub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.topo-hub-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.topo-hub-specs {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 8px 0;
  border-top: 1px dashed var(--border-divider);
  border-bottom: 1px dashed var(--border-divider);
}
.topo-branches-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 20px;
}
.topo-col {
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 16px;
}
.topo-col-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 6px;
}
.topo-col-tag {
  font-size: 0.8rem;
  font-weight: 700;
  background: rgba(56, 189, 248, 0.12);
  color: var(--primary-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 3px 10px;
  border-radius: 6px;
}
.topo-nodes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.topo-node-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border-divider);
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.topo-node-card:hover {
  background: rgba(30, 41, 59, 0.9);
  border-color: var(--primary-cyan);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.12);
}
.topo-node-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.topo-node-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 篩選膠囊 */
.filter-pills-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.dev-filter-pill {
  background: var(--bg-subcard);
  border: 1px solid var(--border-divider);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.dev-filter-pill.active, .dev-filter-pill:hover {
  background: var(--primary-cyan);
  color: #060b14;
  border-color: var(--primary-cyan);
}

/* 設備卡片網格 */
.device-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 16px;
}
.device-card {
  background: var(--bg-card);
  border: 1px solid var(--border-divider);
  border-radius: 14px;
  padding: 16px;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.device-card.offline {
  opacity: 0.75;
  border-color: rgba(244, 63, 94, 0.25);
}
.device-card.offline:hover {
  opacity: 1;
  border-color: rgba(244, 63, 94, 0.45);
}
.device-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}
.device-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}
.device-card-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
.device-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-heading);
}
.device-card-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.device-card-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background: var(--bg-subcard);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 12px;
  border: 1px solid var(--border-subtle);
}
.device-card-metric-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.device-card-metric-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.device-card-metric-val {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}
.device-card-actions {
  display: flex;
  gap: 6px;
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
}
.device-card-actions .btn-action {
  flex: 1;
  justify-content: center;
  padding: 6px 8px;
  font-size: 0.78rem;
}

/* 訊號條樣式 */
.signal-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
}
.signal-bar {
  width: 3px;
  border-radius: 1px;
  background: rgba(255, 255, 255, 0.2);
}
.signal-bar.h1 { height: 25%; }
.signal-bar.h2 { height: 50%; }
.signal-bar.h3 { height: 75%; }
.signal-bar.h4 { height: 100%; }
.signal-bars.excellent .signal-bar { background: var(--accent-emerald); }
.signal-bars.good .signal-bar:nth-child(-n+3) { background: var(--primary-cyan); }
.signal-bars.fair .signal-bar:nth-child(-n+2) { background: var(--color-warn); }
.signal-bars.weak .signal-bar:nth-child(1) { background: var(--color-danger); }

/* 大視窗與時間軸 */
.modal-dialog.modal-xl {
  max-width: 860px;
  width: min(860px, 95vw);
  max-height: 90vh;
  max-height: 90dvh;
  margin: auto;
  overscroll-behavior: contain;
}
.modal-card-xl {
  height: 100%;
  max-height: 90dvh;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  overflow: hidden;
}
.modal-card-xl .modal-head {
  flex-shrink: 0;
}
.modal-card-xl .modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  max-height: calc(90dvh - 140px);
  padding-right: 6px;
  overscroll-behavior: contain;
}
.modal-card-xl .modal-footer {
  flex-shrink: 0;
  padding-top: 14px;
  margin-top: 8px;
  border-top: 1px solid rgba(56, 189, 248, 0.15);
  display: flex;
  justify-content: flex-end;
}
.timeline-container {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid rgba(56, 189, 248, 0.2);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.timeline-item {
  position: relative;
  font-size: 0.82rem;
}
.timeline-dot {
  position: absolute;
  left: -26px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary-cyan);
  box-shadow: 0 0 8px var(--primary-cyan);
}
.timeline-dot.ok { background: var(--accent-emerald); box-shadow: 0 0 8px var(--accent-emerald); }
.timeline-dot.warn { background: var(--color-warn); box-shadow: 0 0 8px var(--color-warn); }
.timeline-dot.info { background: var(--accent-purple); box-shadow: 0 0 8px var(--accent-purple); }
.timeline-time {
  font-size: 0.72rem;
  color: var(--text-dim);
}
.timeline-msg {
  color: var(--text-main);
  margin-top: 2px;
}
.grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ====== RWD 響應式優化 (手機、平板、電腦) ====== */

/* 平板端 (Tablet 768px - 1024px) */
@media (max-width: 1024px) {
  .admin-container {
    width: 95vw;
    padding: 24px 0 60px;
  }
  .nodes-table-header, .nodeRow {
    grid-template-columns: 1.4fr 1.4fr 1.6fr 0.8fr 80px;
    gap: 8px;
  }
  .form-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 手機端 (Mobile <= 768px) */
@media (max-width: 768px) {
  .admin-container {
    width: 95vw;
    padding: 16px 0 60px;
  }

  .admin-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-bottom: 18px;
  }

  .header-actions {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .header-actions .btn-action {
    flex: 1;
    min-width: 130px;
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .admin-main-card {
    padding: 18px 14px;
    border-radius: 16px;
  }

  .panel-header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  /* 測點在手機轉為單卡片佈局 */
  .nodes-table-header {
    display: none;
  }

  .nodeRow {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 12px;
  }

  .nodeRow input[data-k="name"] {
    grid-column: 1 / -1;
    font-weight: 700;
  }

  .nodeRow input[data-k="location_name"] {
    grid-column: 1 / 2;
  }

  .nodeRow input[data-k="display_order"] {
    grid-column: 2 / 3;
  }

  .nodeRow input[data-k="mac_address"] {
    grid-column: 1 / -1;
  }

  .nodeRow button {
    grid-column: 1 / -1;
    padding: 8px;
  }

  .form-grid-2, .form-grid-3 {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .form-bottom-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .form-bottom-bar .btn-action {
    width: 100%;
  }

  .ruleHeader {
    flex-direction: column;
    align-items: flex-start;
  }

  .ruleHeader > div {
    width: 100%;
  }

  .ruleHeader input.ruleName {
    flex: 1;
    width: 100% !important;
  }

  .delRuleBtn {
    width: 100%;
    margin-top: 6px;
  }

  .mode-toggle-group {
    max-width: 100%;
  }

  .ota-upload-row {
    flex-direction: column;
    align-items: stretch;
  }

  .file-input {
    width: 100%;
  }

  /* 行動端彈窗滿版與易關閉優化 */
  .modal-card {
    padding: 16px;
  }
  .modal-head {
    padding-right: 48px;
  }
  .btn-close {
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
    min-width: 38px;
    min-height: 38px;
  }
  .modal-dialog.modal-xl {
    width: 95vw !important;
    max-width: 95vw !important;
    height: 86vh !important;
    height: 86dvh !important;
    max-height: 86dvh !important;
    margin: auto !important;
    display: flex !important;
    flex-direction: column !important;
    border-radius: 16px !important;
    overflow: hidden !important;
  }
  .modal-card-xl {
    height: 100% !important;
    max-height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    padding: 16px 14px !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
  }
  .modal-card-xl .modal-head {
    flex-shrink: 0 !important;
    padding-bottom: 12px !important;
    margin-bottom: 8px !important;
    border-bottom: 1px solid rgba(56, 189, 248, 0.2) !important;
  }
  .modal-card-xl .modal-body {
    flex: 1 1 auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    padding-right: 4px !important;
  }
  .modal-card-xl .modal-footer {
    flex-shrink: 0 !important;
    padding-top: 10px !important;
    margin-top: 6px !important;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
  }
  .stat-box {
    padding: 10px 12px !important;
  }
  .action-btn-group {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
  }
  .action-btn-group .btn-action {
    width: 100% !important;
    min-height: 44px !important;
  }
  #closeDeviceModalBtn {
    width: 100%;
    min-height: 46px;
    font-size: 0.95rem;
    font-weight: 700;
  }
  .admin-main-card {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
    background: var(--bg-mobile-card) !important;
  }
}

/* ====== 專題研究分析報告預覽模態視窗 ====== */
.report-paper {
  background: #ffffff;
  color: #1e293b;
  padding: 32px 36px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans TC", sans-serif;
  line-height: 1.6;
}

@media print {
  body * {
    visibility: hidden;
  }
  #projectReportModal, #projectReportModal * {
    visibility: visible;
  }
  #projectReportModal {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;
  }
  .report-no-print {
    display: none !important;
  }
  .report-paper {
    padding: 0;
    box-shadow: none;
    color: #000;
  }
}

.report-header {
  border-bottom: 2px solid #0284c7;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.report-title-main {
  font-size: 1.4rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.report-subtitle-main {
  font-size: 0.92rem;
  color: #64748b;
  margin-top: 4px;
}

.report-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  background: #f8fafc;
  padding: 14px 18px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  margin-bottom: 20px;
}

.report-meta-item {
  display: flex;
  flex-direction: column;
}

.report-meta-label {
  font-size: 0.75rem;
  color: #64748b;
  font-weight: 600;
  text-transform: uppercase;
}

.report-meta-val {
  font-size: 0.9rem;
  color: #0f172a;
  font-weight: 700;
}

.report-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.report-kpi-card {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 14px;
  text-align: center;
}

.report-kpi-card.highlight {
  background: #e0f2fe;
  border-color: #38bdf8;
}

.report-kpi-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #0284c7;
  font-family: 'Outfit', sans-serif;
  line-height: 1.1;
  margin-top: 4px;
}

.report-kpi-label {
  font-size: 0.78rem;
  color: #475569;
  font-weight: 600;
}

.report-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.88rem;
}

.report-table th {
  background: #f8fafc;
  color: #475569;
  font-weight: 700;
  padding: 10px 12px;
  border-bottom: 2px solid #cbd5e1;
  text-align: left;
}

.report-table td {
  padding: 10px 12px;
  border-bottom: 1px solid #e2e8f0;
  color: #1e293b;
}

.report-conclusion-box {
  background: #eff6ff;
  border-left: 4px solid #2563eb;
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: #1e3a8a;
}

/* 管理者帳號清單表格 */
.admin-accounts-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}
.admin-accounts-table th {
  background: var(--bg-table-head);
  padding: 10px 14px;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.admin-accounts-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 0.88rem;
}

/* ====== 主題切換按鈕 ====== */
.btn-theme-toggle {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--primary-cyan);
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  font-family: inherit;
  white-space: nowrap;
}
.btn-theme-toggle:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: rgba(56, 189, 248, 0.45);
  transform: translateY(-1px);
}

/* 角色標籤 */
.role-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.role-badge.admin { background: rgba(244, 63, 94, 0.15); color: #fb7185; border: 1px solid rgba(244, 63, 94, 0.35); }
.role-badge.root { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.35); }
.role-badge.member { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.35); }
.role-badge.viewer { background: rgba(148, 163, 184, 0.15); color: #94a3b8; border: 1px solid rgba(148, 163, 184, 0.35); }

/* ====== 網路速度測試 ====== */
.speed-test-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 10px 0;
}
.speed-gauges-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 24px 0;
}
@media (max-width: 540px) {
  .speed-gauges-grid { grid-template-columns: 1fr 1fr; }
}
.speed-gauge-card {
  background: var(--bg-subcard, rgba(10, 16, 30, 0.85));
  border: 1px solid var(--border-line, rgba(56, 189, 248, 0.18));
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  transition: all 0.3s;
}
.speed-gauge-icon {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 8px;
}
.speed-gauge-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.speed-gauge-value {
  font-size: 2.4rem;
  font-weight: 900;
  font-family: 'Outfit', monospace;
  color: var(--primary-cyan);
  line-height: 1;
  transition: all 0.15s;
}
.speed-gauge-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 600;
}
.speed-extra-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 12px 0 20px;
}
.speed-extra-item {
  background: var(--bg-subcard, rgba(10, 16, 30, 0.85));
  border: 1px solid var(--border-line);
  border-radius: 10px;
  padding: 10px 18px;
  text-align: center;
  min-width: 130px;
}
.speed-extra-label { font-size: 0.72rem; color: var(--text-muted); font-weight: 600; }
.speed-extra-value { font-size: 1.1rem; font-weight: 800; color: var(--text-main); margin-top: 3px; }
.speed-rating-box {
  border-radius: 12px;
  padding: 14px 20px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 700;
  margin: 16px 0;
}
.speed-rating-box.excellent { background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); color: #34d399; }
.speed-rating-box.good { background: rgba(56, 189, 248, 0.12); border: 1px solid rgba(56, 189, 248, 0.3); color: #38bdf8; }
.speed-rating-box.fair { background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.3); color: #fbbf24; }
.speed-rating-box.poor { background: rgba(244, 63, 94, 0.12); border: 1px solid rgba(244, 63, 94, 0.3); color: #f43f5e; }
.speed-rating-box.idle { background: rgba(100, 116, 139, 0.12); border: 1px solid rgba(100, 116, 139, 0.2); color: var(--text-muted); }
.speed-progress {
  height: 5px;
  border-radius: 999px;
  background: var(--border-subtle);
  overflow: hidden;
  margin-top: 8px;
}
.speed-progress-bar {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #0284c7, #38bdf8);
  transition: width 0.3s ease;
  width: 0%;
}
.speed-log-list {
  max-height: 180px;
  overflow-y: auto;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 4px 0;
}
.speed-log-item {
  padding: 3px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  display: flex;
  gap: 8px;
}
.speed-log-time { color: var(--text-dim); flex-shrink: 0; }

/* ====== 淺色主題 (Light Mode) ====== */
[data-theme="light"] {
  color-scheme: light;
  --bg-main: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.97);
  --bg-card-hover: #ffffff;
  --bg-subcard: rgba(241, 245, 249, 0.95);
  --bg-input: rgba(248, 250, 252, 0.95);
  --bg-input-focus: #ffffff;
  --bg-zero: rgba(226, 232, 240, 0.7);
  --bg-table-head: rgba(241, 245, 249, 0.95);
  --bg-logs: #f8fafc;
  --bg-mobile-card: #ffffff;
  --border-line: rgba(148, 163, 184, 0.35);
  --border-glow: rgba(2, 132, 199, 0.4);
  --border-input: rgba(148, 163, 184, 0.5);
  --border-subtle: rgba(148, 163, 184, 0.2);
  --border-divider: rgba(148, 163, 184, 0.25);
  --primary-cyan: #0284c7;
  --primary-blue: #0369a1;
  --accent-purple: #6366f1;
  --accent-emerald: #059669;
  --color-warn: #d97706;
  --color-danger: #e11d48;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  --text-heading: #0f172a;
  --text-inverted: #ffffff;
}

/* Body + background */
[data-theme="light"] body {
  background-color: #f1f5f9;
  background-image:
    radial-gradient(at 0% 0%, rgba(186, 230, 253, 0.55) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(199, 210, 254, 0.5) 0px, transparent 50%);
  color: #0f172a;
}

/* Header */
[data-theme="light"] .admin-header {
  border-bottom-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .header-title {
  background: linear-gradient(135deg, #0f172a 30%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="light"] .header-desc { color: #475569; }
[data-theme="light"] .brand-badge {
  background: rgba(2, 132, 199, 0.08);
  border-color: rgba(2, 132, 199, 0.3);
  color: #0284c7;
}

/* Status pills */
[data-theme="light"] .status-pill.ok { color: #059669; background: rgba(5, 150, 105, 0.1); border-color: rgba(5, 150, 105, 0.3); }
[data-theme="light"] .status-pill.warn { color: #d97706; background: rgba(217, 119, 6, 0.1); border-color: rgba(217, 119, 6, 0.3); }
[data-theme="light"] .status-pill.purple { color: #6366f1; background: rgba(99, 102, 241, 0.1); border-color: rgba(99, 102, 241, 0.3); }

/* Tabs */
[data-theme="light"] .tabs-scroll-wrapper { background: rgba(241, 245, 249, 0.95); }
[data-theme="light"] .admin-tabs {
  background: rgba(226, 232, 240, 0.8);
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .tab-item {
  color: #475569;
  background: transparent;
  border-color: transparent;
}
[data-theme="light"] .tab-item:hover {
  color: #0284c7;
  background: rgba(2, 132, 199, 0.07);
}
[data-theme="light"] .tab-item.active {
  background: rgba(2, 132, 199, 0.12);
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.35);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.15);
}

/* Main cards */
[data-theme="light"] .admin-main-card {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(148, 163, 184, 0.28);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .panel-header-row {
  border-bottom-color: rgba(148, 163, 184, 0.2);
}
[data-theme="light"] .panel-title { color: #0f172a; }
[data-theme="light"] .panel-subtitle { color: #475569; }

/* Sub-cards */
[data-theme="light"] .sub-card {
  background: rgba(248, 250, 252, 0.95);
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .sub-card-title { color: #0f172a; }

/* Stat boxes */
[data-theme="light"] .stat-box {
  background: rgba(241, 245, 249, 0.9);
  border-color: rgba(148, 163, 184, 0.2);
}
[data-theme="light"] .stat-label { color: #475569; }
[data-theme="light"] .text-white { color: #0f172a; }
[data-theme="light"] .text-green { color: #059669; }
[data-theme="light"] .text-purple { color: #6366f1; }
[data-theme="light"] .text-cyan { color: #0284c7; }

/* Buttons */
[data-theme="light"] .btn-secondary {
  background: rgba(241, 245, 249, 0.9);
  color: #334155;
  border-color: rgba(148, 163, 184, 0.4);
}
[data-theme="light"] .btn-secondary:hover {
  background: #e2e8f0;
  color: #0f172a;
}
[data-theme="light"] .btn-outline {
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.4);
}
[data-theme="light"] .btn-outline:hover { background: rgba(2, 132, 199, 0.08); }
[data-theme="light"] .btn-theme-toggle {
  background: rgba(2, 132, 199, 0.08);
  border-color: rgba(2, 132, 199, 0.25);
  color: #0284c7;
}

/* Forms */
[data-theme="light"] .form-label { color: #334155; }
[data-theme="light"] .form-input,
[data-theme="light"] .form-select {
  background: rgba(248, 250, 252, 0.95);
  border-color: rgba(148, 163, 184, 0.5);
  color: #0f172a;
}
[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-select:focus {
  border-color: #0284c7;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}
[data-theme="light"] .form-bottom-bar {
  background: rgba(241, 245, 249, 0.98);
  border-top-color: rgba(148, 163, 184, 0.25);
}

/* Message banner */
[data-theme="light"] .message-banner {
  background: rgba(5, 150, 105, 0.08);
  border-color: rgba(5, 150, 105, 0.3);
  color: #065f46;
}

/* Alert boxes */
[data-theme="light"] .alert-box.amber {
  background: rgba(217, 119, 6, 0.07);
  border-color: rgba(217, 119, 6, 0.25);
  color: #92400e;
}

/* Node rows */
[data-theme="light"] .nodeRow {
  background: rgba(248, 250, 252, 0.95);
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .nodeRow:hover { border-color: rgba(2, 132, 199, 0.35); }
[data-theme="light"] .nodeRow input {
  background: #ffffff;
  color: #0f172a;
  border-color: rgba(148, 163, 184, 0.45);
}
[data-theme="light"] .nodes-table-header {
  background: rgba(226, 232, 240, 0.9);
  color: #475569;
}

/* Rule cards */
[data-theme="light"] .ruleCard {
  background: rgba(248, 250, 252, 0.95);
  border-color: rgba(148, 163, 184, 0.25);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .ruleCard:hover { border-color: rgba(2, 132, 199, 0.35); }
[data-theme="light"] .ruleHeader { border-bottom-color: rgba(148, 163, 184, 0.2); }
[data-theme="light"] .ruleField { color: #475569; }
[data-theme="light"] .ruleCard .form-input,
[data-theme="light"] .ruleCard .form-select {
  background: #ffffff;
  border-color: rgba(148, 163, 184, 0.45);
  color: #0f172a;
}
[data-theme="light"] .deviceCheckLabel {
  background: rgba(241, 245, 249, 0.9);
  border-color: rgba(2, 132, 199, 0.25);
  color: #0f172a;
}

/* Mode toggle */
[data-theme="light"] .mode-toggle-group {
  background: rgba(226, 232, 240, 0.8);
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .mode-btn { color: #475569; }

/* Logs */
[data-theme="light"] .logs-container {
  background: #f8fafc;
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .logItem { border-bottom-color: rgba(148, 163, 184, 0.15); }
[data-theme="light"] .logTime { color: #0284c7; }
[data-theme="light"] .logRule { color: #d97706; }
[data-theme="light"] .logAction { color: #059669; }

/* Topology */
[data-theme="light"] .topo-hub-card {
  background: linear-gradient(135deg, rgba(224, 242, 254, 0.95), rgba(255, 255, 255, 0.98));
  border-color: rgba(2, 132, 199, 0.35);
  box-shadow: 0 0 20px rgba(2, 132, 199, 0.1);
}
[data-theme="light"] .topo-hub-title { color: #0f172a; }
[data-theme="light"] .topo-hub-specs {
  color: #475569;
  border-top-color: rgba(148, 163, 184, 0.2);
  border-bottom-color: rgba(148, 163, 184, 0.2);
}
[data-theme="light"] .topo-badge-hub {
  background: rgba(2, 132, 199, 0.1);
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.3);
}
[data-theme="light"] .topo-col {
  background: rgba(241, 245, 249, 0.9);
  border-color: rgba(148, 163, 184, 0.2);
}
[data-theme="light"] .topo-col-tag {
  background: rgba(2, 132, 199, 0.08);
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.2);
}
[data-theme="light"] .topo-node-card {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .topo-node-card:hover {
  border-color: rgba(2, 132, 199, 0.45);
  background: rgba(240, 249, 255, 0.95);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.1);
}
[data-theme="light"] .topo-node-card.online { border-color: rgba(5, 150, 105, 0.4); }

/* Device cards */
[data-theme="light"] .device-card {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(148, 163, 184, 0.25);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .device-card:hover {
  border-color: rgba(2, 132, 199, 0.4);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .device-card.offline { border-color: rgba(225, 29, 72, 0.25); }
[data-theme="light"] .device-card-title { color: #0f172a; }
[data-theme="light"] .device-card-sub { color: #475569; }
[data-theme="light"] .device-card-metric-label { color: #64748b; }
[data-theme="light"] .device-card-metrics {
  background: rgba(241, 245, 249, 0.8);
  border-color: rgba(148, 163, 184, 0.15);
}
[data-theme="light"] .device-card-actions { border-top-color: rgba(148, 163, 184, 0.2); }

/* Filter pills */
[data-theme="light"] .dev-filter-pill {
  background: rgba(241, 245, 249, 0.9);
  border-color: rgba(148, 163, 184, 0.3);
  color: #475569;
}
[data-theme="light"] .dev-filter-pill.active,
[data-theme="light"] .dev-filter-pill:hover {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}

/* Timeline (device modal) */
[data-theme="light"] .timeline-container { border-left-color: rgba(2, 132, 199, 0.3); }
[data-theme="light"] .timeline-msg { color: #0f172a; }

/* Modal */
[data-theme="light"] .modal-card {
  background: #ffffff;
  border-color: rgba(148, 163, 184, 0.3);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.15);
}
[data-theme="light"] .modal-title { color: #0f172a; }
[data-theme="light"] .modal-head { border-bottom-color: rgba(148, 163, 184, 0.2); }
[data-theme="light"] .modal-footer { border-top-color: rgba(148, 163, 184, 0.2); }
[data-theme="light"] .btn-close {
  background: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.12);
  color: #334155;
}
[data-theme="light"] .btn-close:hover {
  background: rgba(225, 29, 72, 0.12);
  border-color: rgba(225, 29, 72, 0.4);
  color: #e11d48;
}

/* Accounts table */
[data-theme="light"] .admin-accounts-table th {
  background: rgba(241, 245, 249, 0.95);
  color: #475569;
  border-bottom-color: rgba(148, 163, 184, 0.3);
}
[data-theme="light"] .admin-accounts-table td {
  color: #0f172a;
  border-bottom-color: rgba(148, 163, 184, 0.12);
}

/* Role badges (light mode — lighter bg with vivid text) */
[data-theme="light"] .role-badge.admin { background: rgba(225, 29, 72, 0.08); color: #be123c; border-color: rgba(225, 29, 72, 0.25); }
[data-theme="light"] .role-badge.root { background: rgba(99, 102, 241, 0.08); color: #4338ca; border-color: rgba(99, 102, 241, 0.25); }
[data-theme="light"] .role-badge.member { background: rgba(2, 132, 199, 0.08); color: #0369a1; border-color: rgba(2, 132, 199, 0.25); }
[data-theme="light"] .role-badge.viewer { background: rgba(100, 116, 139, 0.08); color: #475569; border-color: rgba(100, 116, 139, 0.25); }

/* Speed test */
[data-theme="light"] .speed-gauge-card {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(148, 163, 184, 0.25);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .speed-gauge-value { color: #0284c7; }
[data-theme="light"] .speed-extra-item {
  background: rgba(241, 245, 249, 0.9);
  border-color: rgba(148, 163, 184, 0.25);
}
[data-theme="light"] .speed-extra-value { color: #0f172a; }
[data-theme="light"] .speed-progress { background: rgba(148, 163, 184, 0.2); }
[data-theme="light"] .speed-rating-box.excellent { color: #065f46; background: rgba(5, 150, 105, 0.08); border-color: rgba(5, 150, 105, 0.25); }
[data-theme="light"] .speed-rating-box.good { color: #0369a1; background: rgba(2, 132, 199, 0.08); border-color: rgba(2, 132, 199, 0.25); }
[data-theme="light"] .speed-rating-box.fair { color: #92400e; background: rgba(217, 119, 6, 0.08); border-color: rgba(217, 119, 6, 0.25); }
[data-theme="light"] .speed-rating-box.poor { color: #be123c; background: rgba(225, 29, 72, 0.08); border-color: rgba(225, 29, 72, 0.25); }
[data-theme="light"] .speed-rating-box.idle { color: #475569; background: rgba(100, 116, 139, 0.07); border-color: rgba(100, 116, 139, 0.2); }
[data-theme="light"] .speed-log-list { color: #475569; }
[data-theme="light"] .speed-log-item { border-bottom-color: rgba(148, 163, 184, 0.15); }
[data-theme="light"] .speed-log-time { color: #64748b; }

/* File input & progress */
[data-theme="light"] .file-input {
  background: rgba(248, 250, 252, 0.95);
  border-color: rgba(148, 163, 184, 0.45);
  color: #475569;
}
[data-theme="light"] .progress-bar-container {
  background: rgba(226, 232, 240, 0.8);
  border-color: rgba(148, 163, 184, 0.3);
}

/* Signal bars */
[data-theme="light"] .signal-bar { background: rgba(0, 0, 0, 0.12); }

/* ====== 手機響應式修正 ====== */
@media (max-width: 640px) {
  .admin-container { padding: 16px 0 60px; }
  .admin-header {
    flex-direction: column;
    gap: 12px;
    padding-bottom: 16px;
    margin-bottom: 16px;
  }
  .header-brand-group { min-width: unset; }
  .header-title { font-size: 1.35rem; }
  .header-actions {
    width: 100%;
    gap: 8px;
    justify-content: flex-start;
  }
  .header-actions .btn-action {
    font-size: 0.78rem;
    padding: 7px 12px;
  }
  .tabs-scroll-wrapper {
    margin: 0 -12px;
    padding: 0 12px;
  }
  .admin-tabs {
    gap: 6px;
  }
  .tab-item {
    padding: 8px 12px;
    font-size: 0.8rem;
    min-width: unset;
  }
  .tab-title { display: none; }
  .tab-icon { font-size: 1.1rem; }
  .panel-header-row {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
  .device-cards-grid { grid-template-columns: 1fr; }
  .form-bottom-bar {
    flex-direction: column;
    gap: 8px;
    padding: 12px 14px;
  }
  .modal-card { padding: 16px; border-radius: 16px; }
  .modal-body { max-height: 60vh; }
  .action-btn-group { flex-wrap: wrap; gap: 8px; }
  .topo-nodes-list { grid-template-columns: 1fr; }
  .speed-gauges-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px) {
  .stats-grid { grid-template-columns: 1fr; }
  .speed-gauges-grid { grid-template-columns: 1fr; }
  .header-actions .btn-action span:not(.btn-icon) { display: none; }
}