:root {
  --navy: #112638;
  --navy-dark: #0b1a27;
  --navy-light: #183750;
  --navy-border: #234563;
  --teal: #087F8C;
  --teal-hover: #066670;
  --teal-light: #e6f6f8;
  --off-white: #F7F8F5;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --green: #10b981;
  --green-light: #ecfdf5;
  --red: #ef4444;
  --red-light: #fef2f2;
  --amber: #f59e0b;
  --amber-light: #fffbeb;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--off-white);
  color: var(--gray-800);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--teal);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* App Shell Layout */
.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Slim Dark Sidebar */
.sidebar {
  width: 240px;
  background-color: var(--navy);
  color: #c9d6df;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid var(--navy-border);
}

.sidebar-header {
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
}

.brand-logo svg {
  color: var(--teal);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  color: #c9d6df;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.15s ease;
  text-decoration: none;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: #fff;
  text-decoration: none;
}

.nav-item.active {
  background-color: var(--teal);
  color: #fff;
}

.nav-item .badge {
  margin-left: auto;
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 11px;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background-color: var(--navy-dark);
}

.user-snippet {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.user-name {
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  color: var(--gray-400);
  font-size: 11px;
  text-transform: capitalize;
}

.btn-logout {
  color: var(--gray-400);
  padding: 6px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
}
.btn-logout:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.footer-copy {
  margin-top: 10px;
  font-size: 10.5px;
  color: #7b8e9f;
  text-align: center;
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--off-white);
}

.topbar {
  height: 54px;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.topbar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}
.btn:hover {
  text-decoration: none;
}
.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}
.btn-primary {
  background-color: var(--teal);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--teal-hover);
}
.btn-secondary {
  background-color: #fff;
  border-color: var(--gray-300);
  color: var(--gray-700);
}
.btn-secondary:hover {
  background-color: var(--gray-50);
  border-color: var(--gray-400);
}
.btn-danger {
  background-color: var(--red);
  color: #fff;
}
.btn-danger:hover {
  background-color: #dc2626;
}
.btn-warning {
  background-color: var(--amber);
  color: #fff;
}
.btn-navy {
  background-color: var(--navy);
  color: #fff;
}
.btn-navy:hover {
  background-color: var(--navy-light);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11.5px;
  font-weight: 500;
}
.badge-success {
  background-color: var(--green-light);
  color: #065f46;
}
.badge-warning {
  background-color: var(--amber-light);
  color: #92400e;
}
.badge-danger {
  background-color: var(--red-light);
  color: #991b1b;
}
.badge-info {
  background-color: var(--teal-light);
  color: var(--teal);
}
.badge-neutral {
  background-color: var(--gray-100);
  color: var(--gray-700);
}

/* Cards & Panels */
.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
}
.card-body {
  padding: 20px;
}
.card-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* Form Styles */
.form-group {
  margin-bottom: 16px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  color: var(--gray-900);
  background-color: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-control:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(8, 127, 140, 0.15);
}
textarea.form-control {
  min-height: 80px;
  resize: vertical;
}
.form-help {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* Grid layout helpers */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 13.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.alert-success {
  background-color: var(--green-light);
  color: #065f46;
  border: 1px solid #a7f3d0;
}
.alert-error {
  background-color: var(--red-light);
  color: #991b1b;
  border: 1px solid #fecaca;
}
.alert-warning {
  background-color: var(--amber-light);
  color: #92400e;
  border: 1px solid #fde68a;
}
.alert-info {
  background-color: var(--teal-light);
  color: #0d5f69;
  border: 1px solid #bce6eb;
}

/* Table styles */
.table-wrapper {
  overflow-x: auto;
}
table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}
table.data-table th {
  background-color: var(--gray-50);
  color: var(--gray-600);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}
table.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-800);
}
table.data-table tr:hover td {
  background-color: rgba(247, 248, 245, 0.6);
}

/* Inbox 3-Pane Workspace */
.inbox-workspace {
  display: flex;
  height: calc(100vh - 54px);
  overflow: hidden;
  background: #fff;
}
.inbox-list-pane {
  width: 320px;
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  background: #fff;
}
.inbox-search-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.inbox-filter-tabs {
  display: flex;
  gap: 6px;
  padding: 0 4px;
}
.filter-tab {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  color: var(--gray-600);
  background: var(--gray-100);
  cursor: pointer;
  border: none;
}
.filter-tab.active {
  background: var(--navy);
  color: #fff;
}
.conversation-threads {
  flex: 1;
  overflow-y: auto;
}
.thread-item {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  cursor: pointer;
  transition: background 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  color: inherit;
}
.thread-item:hover {
  background-color: var(--off-white);
  text-decoration: none;
}
.thread-item.active {
  background-color: #f0f7f8;
  border-left: 3px solid var(--teal);
}
.thread-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.thread-name {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--navy);
}
.thread-time {
  font-size: 11px;
  color: var(--gray-400);
}
.thread-snippet {
  font-size: 12.5px;
  color: var(--gray-600);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.thread-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

/* Chat Pane */
.inbox-chat-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #fdfdfd;
  min-width: 0;
}
.chat-header {
  height: 60px;
  border-bottom: 1px solid var(--gray-200);
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background-color: var(--off-white);
}
.chat-bubble {
  max-width: 68%;
  padding: 10px 14px;
  border-radius: var(--radius-lg);
  font-size: 13.5px;
  line-height: 1.45;
  position: relative;
  word-break: break-word;
}
.bubble-inbound {
  align-self: flex-start;
  background: #ffffff;
  color: var(--gray-900);
  border: 1px solid var(--gray-200);
  border-bottom-left-radius: 2px;
}
.bubble-outbound-ai {
  align-self: flex-end;
  background: #e6f6f8;
  color: #0b3e45;
  border: 1px solid #bce6eb;
  border-bottom-right-radius: 2px;
}
.bubble-outbound-agent {
  align-self: flex-end;
  background: var(--navy);
  color: #ffffff;
  border-bottom-right-radius: 2px;
}
.bubble-system {
  align-self: center;
  background: #fff;
  border: 1px dashed var(--gray-300);
  color: var(--gray-600);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 12px;
}
.bubble-meta {
  font-size: 10.5px;
  margin-top: 4px;
  opacity: 0.75;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.chat-input-bar {
  padding: 14px 20px;
  border-top: 1px solid var(--gray-200);
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-input-row {
  display: flex;
  gap: 10px;
}

/* Context Pane */
.inbox-context-pane {
  width: 310px;
  border-left: 1px solid var(--gray-200);
  background: #fff;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  flex-shrink: 0;
}
.context-section-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
  color: var(--gray-500);
  margin-bottom: 8px;
}