/* 灰色虛無風格 (Nihilistic Grey Aesthetic) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-void: #f4f4f6;
  --bg-charcoal: #ffffff;
  --bg-slate: #e9e9f0;
  --bg-input: #f8f9fa;
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-focus: rgba(0, 0, 0, 0.15);
  --text-primary: #1d1d22;
  --text-secondary: #6e6e7d;
  --text-muted: #9e9eb0;
  --accent-glow: rgba(0, 0, 0, 0.05);
  --accent-solid: #1d1d22;
  --bubble-inbound: #e9eaee;
  --bubble-outbound: #d2d5dc;
  --danger: #d32f2f;
  --success: #388e3c;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-void);
  color: var(--text-primary);
  height: 100vh;
  display: flex;
  overflow: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* App Container */
#app {
  display: flex;
  width: 100%;
  height: 100%;
  position: relative;
}

/* Login Page Style */
.login-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, #ffffff 0%, var(--bg-void) 100%);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 40px 32px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 2px;
  margin-bottom: 8px;
  color: var(--text-primary);
  text-transform: uppercase;
}

.login-header p {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control, select.form-control {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  transition: all 0.3s ease;
  outline: none;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238e8e9f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 14px;
  padding-right: 40px;
}

.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--border-subtle);
}

.btn {
  width: 100%;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--text-primary);
  border-radius: 6px;
  padding: 12px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
  outline: none;
}

.btn:hover {
  background: var(--text-primary);
  color: var(--bg-void);
  box-shadow: 0 0 15px var(--accent-glow);
}

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

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

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

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

.btn-inline {
  width: auto;
  padding: 8px 16px;
  font-size: 11px;
}

/* Error / Success message */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 20px;
  display: none;
  border: 1px solid transparent;
}
.alert-danger {
  background-color: rgba(207, 102, 121, 0.08);
  border-color: rgba(207, 102, 121, 0.2);
  color: var(--danger);
}
.alert-success {
  background-color: rgba(129, 199, 132, 0.08);
  border-color: rgba(129, 199, 132, 0.2);
  color: var(--success);
}

/* Sidebar Navigation */
.sidebar {
  width: 240px;
  background-color: var(--bg-charcoal);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  height: 100%;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-header h2 {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.sidebar-header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.sidebar-menu {
  list-style: none;
  padding: 20px 12px;
  flex-grow: 1;
}

.sidebar-menu-item {
  margin-bottom: 6px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 0.5px;
  border-radius: 6px;
  transition: all 0.2s ease;
  cursor: pointer;
}

.sidebar-link svg {
  margin-right: 12px;
  width: 16px;
  height: 16px;
  stroke: var(--text-secondary);
  transition: stroke 0.2s ease;
}

.sidebar-link:hover, .sidebar-menu-item.active .sidebar-link {
  color: var(--text-primary);
  background-color: var(--bg-slate);
}

.sidebar-link:hover svg, .sidebar-menu-item.active .sidebar-link svg {
  stroke: var(--text-primary);
}

.sidebar-footer {
  padding: 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.user-role {
  font-size: 10px;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.logout-icon {
  background: transparent;
  border: none;
  cursor: pointer;
  stroke: var(--text-secondary);
  padding: 4px;
  display: flex;
  align-items: center;
  transition: stroke 0.2s ease;
}

.logout-icon:hover {
  stroke: var(--danger);
}

/* Main Content Area */
.main-content {
  flex-grow: 1;
  background-color: var(--bg-void);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.content-pane {
  display: none;
  flex-direction: column;
  height: 100%;
  width: 100%;
  animation: fadeIn 0.4s ease-out;
}

.content-pane.active {
  display: flex;
}

.pane-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.pane-header h2 {
  font-size: 21px;
  font-weight: 400;
  letter-spacing: 1px;
}

.pane-header-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.pane-body {
  flex-grow: 1;
  padding: 32px;
  overflow-y: auto;
}

/* Two-column layout for dashboard */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background-color: var(--bg-charcoal);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 24px;
}

.stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 32px;
  font-weight: 300;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* LINE Chat Room Layout */
.chat-container {
  display: flex;
  height: 100%;
  overflow: hidden;
}

.chat-sidebar {
  width: 320px;
  background-color: var(--bg-charcoal);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  height: 100%;
  flex-shrink: 0;
}

.chat-search-bar {
  padding: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.chat-list {
  flex-grow: 1;
  overflow-y: auto;
  list-style: none;
}

.chat-item {
  display: flex;
  padding: 16px;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: background-color 0.2s ease;
  align-items: center;
}

.chat-item:hover, .chat-item.active {
  background-color: var(--bg-slate);
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--bg-void);
  margin-right: 12px;
  flex-shrink: 0;
  border: 1px solid var(--border-subtle);
  object-fit: cover;
}

.chat-item-info {
  flex-grow: 1;
  min-width: 0;
}

.chat-item-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}

.chat-item-name {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.chat-item-time {
  font-size: 10px;
  color: var(--text-muted);
}

.chat-item-preview {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.chat-item-badge {
  font-size: 10px;
  background-color: var(--text-muted);
  color: var(--bg-void);
  padding: 2px 6px;
  border-radius: 10px;
  margin-left: 8px;
  display: inline-block;
}

.chat-item-badge.bound {
  background-color: var(--text-secondary);
}

/* Chat Main View */
.chat-main {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--bg-void);
}

.chat-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(18, 18, 22, 0.2);
  flex-shrink: 0;
}

.chat-user-detail {
  display: flex;
  align-items: center;
}

.chat-header-name {
  font-size: 17px;
  font-weight: 500;
}

.chat-header-status {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.chat-header-status span.bound-tag {
  color: var(--success);
  border: 1px solid rgba(129, 199, 132, 0.3);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  margin-left: 6px;
}

.chat-messages {
  flex-grow: 1;
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #fcfcfd;
}

.message-wrapper {
  display: flex;
  margin-bottom: 4px;
  max-width: 75%;
}

.message-wrapper.inbound {
  align-self: flex-start;
}

.message-wrapper.outbound {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  margin-right: 8px;
  margin-left: 0;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
  object-fit: cover;
}

.message-wrapper.outbound .message-avatar {
  margin-left: 8px;
  margin-right: 0;
}

.message-bubble-container {
  display: flex;
  flex-direction: column;
}

.message-bubble {
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 15px;
  line-height: 1.4;
  word-break: break-word;
}

.inbound .message-bubble {
  background-color: var(--bubble-inbound);
  color: var(--text-primary);
  border-top-left-radius: 2px;
  border: 1px solid var(--border-subtle);
}

.outbound .message-bubble {
  background-color: var(--bubble-outbound);
  color: var(--text-primary);
  border-top-right-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.message-time {
  font-size: 9px;
  color: var(--text-muted);
  margin-top: 4px;
  align-self: flex-start;
}

.outbound .message-time {
  align-self: flex-end;
}

.chat-input-area {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  background-color: rgba(18, 18, 22, 0.4);
  flex-shrink: 0;
}

.chat-input-wrapper {
  display: flex;
  gap: 12px;
}

.chat-input-wrapper textarea {
  flex-grow: 1;
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-primary);
  resize: none;
  height: 44px;
  outline: none;
  font-family: var(--font-sans);
  transition: all 0.3s ease;
}

.chat-input-wrapper textarea:focus {
  border-color: var(--border-focus);
}

.chat-input-wrapper button {
  width: 80px;
  flex-shrink: 0;
}

.chat-empty-state {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  color: var(--text-secondary);
  text-align: center;
  padding: 40px;
}

.chat-empty-state svg {
  stroke: var(--text-muted);
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

/* Drag and Drop File Upload Area */
.upload-zone {
  border: 2px dashed var(--border-subtle);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  background-color: var(--bg-charcoal);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 24px;
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--text-secondary);
  background-color: var(--bg-slate);
}

.upload-zone svg {
  stroke: var(--text-secondary);
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
}

.upload-zone p {
  font-size: 14px;
  color: var(--text-primary);
}

.upload-zone span {
  font-size: 12px;
  color: var(--text-secondary);
  display: block;
  margin-top: 8px;
}

/* Table Style */
.table-wrapper {
  background-color: var(--bg-charcoal);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 24px;
}

.table-search-bar {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.search-input {
  max-width: 320px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 15px;
}

.data-table th, .data-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table th {
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1px;
  background-color: rgba(0, 0, 0, 0.1);
}

.data-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* Modal Windows */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-card {
  width: 100%;
  max-width: 500px;
  background-color: var(--bg-charcoal);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  animation: modalIn 0.3s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  stroke: var(--text-secondary);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  max-height: 400px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.modal-footer button {
  width: auto;
  padding: 8px 20px;
}

/* Simulator Widget Split layout */
.split-pane {
  display: flex;
  gap: 24px;
  height: calc(100% - 80px);
}

.split-left, .split-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-charcoal);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 24px;
  height: 100%;
  overflow-y: auto;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-admin {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-regular {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* Key values mono display */
.mono-text {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 12px;
}

/* Keyword trigger item list */
.keyword-rule-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.keyword-rule-card {
  background-color: var(--bg-charcoal);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.keyword-rule-card:hover {
  border-color: var(--border-focus);
}

.keyword-rule-info {
  flex-grow: 1;
  padding-right: 20px;
}

.keyword-rule-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.keyword-rule-word {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.05);
  padding: 2px 8px;
  border-radius: 4px;
}

.keyword-rule-content {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: pre-wrap;
  line-height: 1.6;
}

.keyword-rule-actions {
  display: flex;
  gap: 8px;
}

.keyword-rule-actions button {
  padding: 6px 12px;
  font-size: 11px;
}