:root {
  --ms-blue: #0078d4;
  --ms-blue-hover: #106ebe;
  --ms-blue-active: #005a9e;
  --ms-bg: #f3f2f1;
  --ms-surface: #ffffff;
  --ms-subtle-bg: #faf9f8;
  --ms-text-primary: #201f1e;
  --ms-text-secondary: #605e5c;
  --ms-border: #e1dfdd;
  --ms-border-hover: #c8c6c4;
  --ms-danger: #d13438;
  --ms-success: #107c41;
  --ms-warning: #797775;
  --radius: 6px;
  --shadow-sm: 0 1.6px 3.6px rgba(0, 0, 0, 0.13), 0 0.3px 0.9px rgba(0, 0, 0, 0.11);
  --shadow-md: 0 3.2px 7.2px rgba(0, 0, 0, 0.13), 0 0.6px 1.8px rgba(0, 0, 0, 0.11);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background-color: var(--ms-bg);
  color: var(--ms-text-primary);
  min-height: 100vh;
  font-size: 14px;
}

body.app-body {
  height: 100vh;
  overflow: hidden;
}

body.landing-page {
  height: auto !important;
  min-height: 100vh !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  background-color: #faf9f8;
}

/* Authentication Screen */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: var(--ms-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.auth-card {
  background: var(--ms-surface);
  width: 100%;
  max-width: 400px;
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--ms-border);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.ms-logo {
  width: 40px;
  height: 40px;
  background: #25d366;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 24px;
}

.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--ms-surface);
  border-right: 1px solid var(--ms-border);
  display: flex;
  flex-direction: column;
}

.brand {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--ms-border);
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--ms-blue);
  color: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.brand-text h2 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
}

.badge-corp {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  background: #e1dfdd;
  color: var(--ms-text-primary);
  border-radius: 4px;
  text-transform: uppercase;
}

.nav-menu {
  padding: 12px 8px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: none;
  background: transparent;
  color: var(--ms-text-primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  transition: all 0.1s ease;
}

.nav-item:hover {
  background: var(--ms-subtle-bg);
}

.nav-item.active {
  background: #eff6fc;
  color: var(--ms-blue);
  font-weight: 600;
}

.nav-item i {
  font-size: 16px;
  width: 18px;
  text-align: center;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--ms-border);
}

.user-profile-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px;
  background: var(--ms-subtle-bg);
  border-radius: var(--radius);
}

/* Main Content Area */
.content-area {
  flex: 1;
  background: var(--ms-bg);
  overflow-y: auto;
  padding: 24px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.header-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.header-action h1 {
  font-size: 20px;
  font-weight: 600;
}

.header-action p {
  font-size: 13px;
  color: var(--ms-text-secondary);
}

/* Common Components */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.1s ease;
}

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

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

.btn-secondary {
  background: var(--ms-surface);
  border-color: var(--ms-border);
  color: var(--ms-text-primary);
}

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

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

.btn-danger:hover {
  background: #a80000;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ms-text-primary);
}

.form-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--ms-border);
  border-radius: var(--radius);
  background: var(--ms-surface);
  font-size: 13px;
  outline: none;
  transition: border-color 0.1s ease;
}

.form-input:focus {
  border-color: var(--ms-blue);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Devices Grid */
.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.device-card {
  background: var(--ms-surface);
  border: 1px solid var(--ms-border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.device-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.status-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
}

.status-CONNECTED {
  background: #dff6dd;
  color: #107c41;
}

.status-DISCONNECTED {
  background: #fde7e9;
  color: #d13438;
}

.status-QR_PENDING {
  background: #fff4ce;
  color: #797775;
}

.token-box {
  background: var(--ms-subtle-bg);
  border: 1px solid var(--ms-border);
  padding: 6px 10px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 11px;
  word-break: break-all;
}

/* Data Tables */
.table-card {
  background: var(--ms-surface);
  border: 1px solid var(--ms-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

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

.data-table th,
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--ms-border);
  font-size: 13px;
}

.data-table th {
  background: var(--ms-subtle-bg);
  font-weight: 600;
  color: var(--ms-text-secondary);
}

.data-table tbody tr:hover {
  background: #faf9f8;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1100;
}

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

.modal {
  background: var(--ms-surface);
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--ms-border);
  overflow: hidden;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--ms-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 16px;
}

.close-btn {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--ms-text-secondary);
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 12px 20px;
  background: var(--ms-subtle-bg);
  border-top: 1px solid var(--ms-border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Live CS Inbox Layout */
.chat-layout {
  display: flex;
  height: calc(100vh - 120px);
  background: var(--ms-surface);
  border: 1px solid var(--ms-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.chat-sidebar {
  width: 320px;
  border-right: 1px solid var(--ms-border);
  display: flex;
  flex-direction: column;
}

.search-box {
  padding: 12px;
  border-bottom: 1px solid var(--ms-border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-box input {
  border: none;
  outline: none;
  width: 100%;
  font-size: 13px;
}

.chat-threads-list {
  flex: 1;
  overflow-y: auto;
}

.thread-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--ms-border);
  cursor: pointer;
  transition: background 0.1s ease;
}

.thread-item:hover {
  background: var(--ms-subtle-bg);
}

.thread-item.active {
  background: #eff6fc;
}

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.chat-header {
  padding: 12px 20px;
  border-bottom: 1px solid var(--ms-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--ms-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ms-text-secondary);
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #f8f9fa;
}

.message-bubble {
  max-width: 65%;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.4;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.message-bubble.sent {
  align-self: flex-end;
  background: #dcf8c6;
  color: #000;
}

.message-bubble.received {
  align-self: flex-start;
  background: white;
  border: 1px solid var(--ms-border);
  color: #000;
}

.chat-input-bar {
  padding: 14px 20px;
  border-top: 1px solid var(--ms-border);
  display: flex;
  gap: 12px;
  background: var(--ms-surface);
}

.chat-input-bar input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--ms-border);
  border-radius: var(--radius);
  outline: none;
}

.doc-card {
  background: var(--ms-surface);
  border: 1px solid var(--ms-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.doc-card h3 {
  font-size: 15px;
  margin-bottom: 10px;
}

pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 12px;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 12px;
}

.doc-attachment-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 6px;
  padding: 10px 14px;
  margin-top: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.doc-attachment-card:hover {
  background: rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.18);
}