/* ══════════════════════════════════════════════
   PostPro Customer Portal — Deep Obsidian Dark Theme
   Loaded AFTER portal.css to override via cascade
   ══════════════════════════════════════════════ */

/* ── Root variable overrides ── */
:root {
  /* Surface hierarchy (Deep Obsidian) */
  --bg-primary: #080C14;
  --bg-secondary: #0B1120;
  --bg-tertiary: #111827;
  --bg-hover: #1A2236;
  --bg-surface: rgba(17, 24, 39, 0.92);

  /* Text */
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.04);
  --border-medium: rgba(255, 255, 255, 0.10);

  /* Sidebar / Header */
  --sidebar-bg: #0B1120;
  --sidebar-bg-hover: rgba(79, 195, 202, 0.06);
  --sidebar-border: rgba(255, 255, 255, 0.06);
  --sidebar-active-bg: rgba(79, 195, 202, 0.1);

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.6);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.4);

  /* Gradients */
  --surface-gradient: linear-gradient(180deg, rgba(11, 17, 32, 0.95) 0%, rgba(17, 24, 39, 0.9) 100%);
  --grid-line: rgba(79, 195, 202, 0.015);

  /* Card bg shorthand */
  --card-bg: #111827;

  /* Font override */
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ── Global font override ── */
body {
  font-family: var(--font-family);
}

h1, h2, h3, h4, .page-header h1 {
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.04em;
}

.tech-font, code, .badge, .card-value,
.ticket-number, .machine-serial, .nav-badge {
  font-family: 'JetBrains Mono', monospace;
}

/* ── Body background ── */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* ── Login screen ── */
.login-container {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
}

.login-header h1 {
  color: var(--text-primary);
}

.login-header p {
  color: var(--text-muted);
}

.login-form input[type="email"] {
  background: var(--bg-tertiary);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.login-form input[type="email"]::placeholder {
  color: var(--text-muted);
}

.login-form input[type="email"]:focus {
  border-color: var(--amt-turquoise);
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.15);
  background: var(--bg-tertiary);
}

.login-form label {
  color: var(--text-secondary);
}

.login-footer p {
  color: var(--text-muted);
}

.login-footer a {
  color: var(--amt-turquoise);
}

.login-message.success {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
  color: #34D399;
}

.login-message.error {
  background: rgba(248, 113, 113, 0.08);
  border-color: rgba(248, 113, 113, 0.2);
  color: #F87171;
}

/* ── Verify screen ── */
.verify-container {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.verify-container h2 {
  color: var(--text-primary);
}

.verify-container p {
  color: var(--text-muted);
}

.spinner {
  border-color: var(--border-color);
}

.spinner circle {
  stroke: var(--amt-turquoise);
}

/* ── Portal header ── */
.portal-header {
  background: var(--sidebar-bg);
  border-bottom-color: var(--sidebar-border);
}

.header-title {
  color: var(--text-primary);
}

.header-divider {
  background: var(--sidebar-border);
}

/* ── User menu ── */
.user-menu-btn {
  color: var(--text-secondary);
}

.user-menu-btn:hover {
  color: var(--text-primary);
}

.user-dropdown {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
}

.dropdown-header {
  border-bottom-color: var(--border-color);
}

.dropdown-header .user-info strong {
  color: var(--text-primary);
}

.dropdown-header .user-info span {
  color: var(--text-muted);
}

.dropdown-item {
  color: var(--text-secondary);
}

.dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.dropdown-divider {
  background: var(--border-color);
}

/* ── Sidebar navigation ── */
.portal-nav {
  background: var(--sidebar-bg);
  border-right-color: var(--sidebar-border);
}

.nav-item {
  color: var(--sidebar-text);
}

.nav-item:hover {
  background: var(--sidebar-bg-hover);
  color: var(--sidebar-text-bright);
}

.nav-item.active {
  background: var(--sidebar-active-bg);
  color: var(--amt-turquoise);
}

/* ── Content area ── */
.portal-content {
  background: var(--bg-primary);
}

.portal-body {
  background: var(--bg-primary);
}

/* ── Page headers ── */
.page-header h1 {
  color: var(--text-primary);
}

/* ── Summary cards ── */
.summary-card {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.summary-card:hover {
  background: var(--bg-hover);
  border-color: var(--border-medium);
}

.card-value {
  color: var(--text-primary);
}

.card-label {
  color: var(--text-muted);
}

.card-icon.tickets {
  background: rgba(79, 195, 202, 0.1);
  color: var(--amt-turquoise);
}

.card-icon.machines {
  background: rgba(139, 92, 246, 0.1);
  color: #A78BFA;
}

.card-icon.action {
  background: rgba(245, 158, 11, 0.1);
  color: #FBBF24;
}

/* ── Dashboard sections ── */
.dashboard-section h2 {
  color: var(--text-primary);
}

/* ── Activity items ── */
.activity-item,
.ticket-item {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.activity-item:hover,
.ticket-item:hover {
  background: var(--bg-hover);
  border-color: var(--border-medium);
}

.item-title {
  color: var(--text-primary);
}

.item-meta,
.item-meta span {
  color: var(--text-muted);
}

/* ── Badges ── */
.badge {
  font-family: 'JetBrains Mono', monospace;
}

.badge-open {
  background: rgba(79, 195, 202, 0.1);
  color: var(--amt-turquoise);
}

.badge-resolved {
  background: rgba(34, 197, 94, 0.1);
  color: #34D399;
}

.badge-awaiting {
  background: rgba(245, 158, 11, 0.1);
  color: #FBBF24;
}

.badge-in-progress,
.badge-in_progress {
  background: rgba(59, 130, 246, 0.1);
  color: #60A5FA;
}

.badge-new {
  background: rgba(139, 92, 246, 0.1);
  color: #A78BFA;
}

/* ── Filters bar ── */
.filters-bar {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.filters-bar select,
.filters-bar input {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.filters-bar select:focus,
.filters-bar input:focus {
  border-color: var(--amt-turquoise);
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.1);
}

.filters-bar select option {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.filters-bar input::placeholder {
  color: var(--text-muted);
}

/* ── Ticket list / Machine list ── */
.ticket-list .ticket-item,
.machine-list .machine-item {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.ticket-list .ticket-item:hover,
.machine-list .machine-item:hover {
  background: var(--bg-hover);
}

/* ── Ticket detail ── */
.ticket-detail {
  color: var(--text-primary);
}

.ticket-detail .detail-card,
.ticket-detail .detail-section,
.machine-detail .detail-card,
.machine-detail .detail-section {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.detail-label {
  color: var(--text-muted);
}

.detail-value {
  color: var(--text-primary);
}

/* ── Thread / conversation ── */
.thread-item {
  background: var(--card-bg);
  border-color: var(--border-color);
}

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

.thread-author {
  color: var(--text-primary);
}

.thread-date {
  color: var(--text-muted);
}

.thread-body {
  color: var(--text-secondary);
}

/* ── Reply form ── */
.reply-form textarea {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.reply-form textarea:focus {
  border-color: var(--amt-turquoise);
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.1);
}

.reply-form textarea::placeholder {
  color: var(--text-muted);
}

/* ── Documents ── */
.documents-sidebar {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.documents-sidebar h3 {
  color: var(--text-primary);
}

.categories-list .category-item {
  color: var(--text-secondary);
}

.categories-list .category-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.categories-list .category-item.active {
  background: rgba(79, 195, 202, 0.08);
  color: var(--amt-turquoise);
}

.document-list .document-item {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.document-list .document-item:hover {
  background: var(--bg-hover);
}

.document-detail {
  color: var(--text-primary);
}

/* ── Forms ── */
.form-item {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.form-item:hover {
  background: var(--bg-hover);
}

/* ── Contacts ── */
.contact-list .contact-item {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.contact-list .contact-item:hover {
  background: var(--bg-hover);
}

.info-banner {
  background: rgba(79, 195, 202, 0.06);
  border-color: rgba(79, 195, 202, 0.15);
  color: var(--text-secondary);
}

/* ── Settings ── */
.settings-section {
  color: var(--text-primary);
}

.settings-section h3 {
  color: var(--text-primary);
}

.settings-description {
  color: var(--text-muted);
}

.logo-upload-area {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
}

.logo-upload-area:hover {
  border-color: var(--amt-turquoise);
  background: rgba(79, 195, 202, 0.04);
}

.logo-upload-text svg {
  color: var(--text-muted);
}

.logo-upload-text span {
  color: var(--text-secondary);
}

.logo-upload-text small {
  color: var(--text-muted);
}

/* ── Buttons ── */
.btn-secondary {
  background: var(--bg-tertiary);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

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

/* ── Modal ── */
.modal-overlay {
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
}

.modal-header {
  background: var(--bg-tertiary);
  border-bottom-color: var(--border-color);
}

.modal-header h2 {
  color: var(--text-primary);
}

.modal-close {
  color: var(--text-muted);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.modal-body label {
  color: var(--text-secondary);
}

.modal-body input,
.modal-body select,
.modal-body textarea {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.modal-body input:focus,
.modal-body select:focus,
.modal-body textarea:focus {
  border-color: var(--amt-turquoise);
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.1);
}

.modal-body input::placeholder,
.modal-body textarea::placeholder {
  color: var(--text-muted);
}

.modal-body select option {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* ── Toast notifications ── */
.toast {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
}

.toast.success {
  border-left-color: #34D399;
}

.toast.error {
  border-left-color: #F87171;
}

.toast.info {
  border-left-color: var(--amt-turquoise);
}

/* ── Pagination ── */
.pagination {
  color: var(--text-muted);
}

.pagination button {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.pagination button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.pagination button.active {
  background: var(--amt-turquoise);
  border-color: var(--amt-turquoise);
  color: #080C14;
}

/* ── Empty states ── */
.empty-state {
  color: var(--text-muted);
}

.empty-state svg {
  color: var(--text-muted);
  opacity: 0.5;
}

.empty-state h3 {
  color: var(--text-secondary);
}

/* ── Loading spinner ── */
.loading-spinner {
  color: var(--text-muted);
}

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

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

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ── Mobile navigation ── */
.mobile-nav {
  background: var(--sidebar-bg);
  border-top: 1px solid var(--sidebar-border);
}

.mobile-nav-item {
  color: var(--text-muted);
}

.mobile-nav-item.active {
  color: var(--amt-turquoise);
}

.mobile-nav-badge {
  background: var(--danger);
}

/* ── Dashboard charts ── */
.dashboard-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md, 12px);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.chart-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--amt-turquoise), transparent);
  opacity: 0.2;
}

.chart-card h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 500;
}

/* Donut chart */
.donut-chart {
  width: 140px;
  height: 140px;
  margin: 0 auto 16px;
  position: relative;
}

.donut-chart svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.donut-chart circle {
  fill: none;
  stroke-width: 20;
  stroke-linecap: round;
  transition: stroke-dasharray 0.6s ease;
}

.donut-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.donut-center .donut-value {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  color: var(--text-primary);
  line-height: 1;
}

.donut-center .donut-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Bar chart */
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 120px;
  margin-bottom: 12px;
  padding: 0 4px;
}

.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  height: 100%;
  justify-content: flex-end;
}

.bar-fill {
  width: 100%;
  max-width: 40px;
  border-radius: 4px 4px 0 0;
  min-height: 4px;
  transition: height 0.6s ease;
  position: relative;
}

.bar-fill::after {
  content: attr(data-value);
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-muted);
  white-space: nowrap;
}

.bar-label {
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* Machines attention list */
.attention-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.attention-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 13px;
}

.attention-item:hover {
  background: rgba(79, 195, 202, 0.04);
  border-color: rgba(79, 195, 202, 0.1);
}

.attention-serial {
  font-family: 'JetBrains Mono', monospace;
  color: var(--amt-turquoise);
  font-size: 12px;
}

.attention-type {
  color: var(--text-muted);
  font-size: 11px;
}

.attention-tickets {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--warning);
  background: rgba(245, 158, 11, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ── Meta pills (shared across forms, tickets, machines) ── */
.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  background: rgba(79, 195, 202, 0.08);
  color: var(--amt-turquoise);
  letter-spacing: 0.02em;
}

.meta-pill.date {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-family: 'Outfit', sans-serif;
}

/* ── Form list card icons (SVG instead of emoji) ── */
.form-list-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-list-card-icon.submitted svg {
  color: #34D399;
}

.form-list-card-icon.in-progress svg {
  color: #60A5FA;
}

.form-list-card-icon.pending svg {
  color: #FBBF24;
}

.form-list-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

/* ── Machine list improvements ── */
.machine-item .machine-image {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  overflow: hidden;
}

.machine-item .machine-image img {
  mix-blend-mode: luminosity;
  opacity: 0.85;
  transition: all 0.2s ease;
}

.machine-item:hover .machine-image img {
  mix-blend-mode: normal;
  opacity: 1;
}

/* Machine meta with better spacing */
.machine-item .item-meta .u-warning {
  color: #FBBF24;
  font-weight: 600;
}

/* ── Forms dark theme ── */
.portal-form-card {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.portal-form-field .form-field-input,
.portal-form-field select.form-field-input {
  background: var(--bg-primary);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.portal-form-field .form-field-input:focus,
.portal-form-field select.form-field-input:focus {
  background: var(--bg-primary);
  border-color: var(--amt-turquoise);
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.15);
}

.portal-form-field .form-field-input::placeholder {
  color: var(--text-muted);
}

.portal-form-field select.form-field-input option {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.portal-form-readonly-value {
  background: var(--bg-primary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.portal-form-section-header {
  color: var(--text-primary);
  border-bottom-color: var(--amt-turquoise);
}

.portal-form-field.form-group label {
  color: var(--text-muted);
}

.portal-form-help {
  background: rgba(79, 195, 202, 0.04);
  color: var(--text-secondary);
  border-left-color: var(--amt-turquoise);
}

.portal-form-description {
  color: var(--text-secondary);
}

/* Toggle switch */
.portal-form-toggle {
  background: var(--bg-primary);
  border-color: var(--border-medium);
}

.portal-form-toggle:hover {
  background: var(--bg-hover);
  border-color: var(--amt-turquoise);
}

.portal-form-toggle label {
  color: var(--text-primary);
}

.portal-form-toggle .toggle-track {
  background: rgba(255, 255, 255, 0.12);
}

.portal-form-toggle .toggle-track::after {
  background: var(--text-secondary);
}

.portal-form-toggle input:checked + .toggle-track {
  background: var(--amt-turquoise);
}

.portal-form-toggle input:checked + .toggle-track::after {
  background: #080C14;
}

/* Context bar and banners */
.form-context-bar {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.form-submitted-banner {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
  color: #34D399;
}

.form-actions {
  border-top-color: var(--border-color);
}

/* Checkbox group readonly */
.portal-form-checkbox-group-readonly {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

/* File upload in forms */
.portal-form-file-item {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

/* Signature */
#signaturePreview {
  background: var(--bg-primary) !important;
  border-color: var(--border-color) !important;
}

/* ── Date/time picker icons ── */
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator,
input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
  cursor: pointer;
}
input[type="date"], input[type="time"], input[type="datetime-local"] {
  color-scheme: dark;
}

/* ── Checkbox styling ── */
input[type="checkbox"] {
  accent-color: var(--amt-turquoise);
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  position: relative;
  vertical-align: middle;
}

input[type="checkbox"]:checked {
  background: var(--amt-turquoise);
  border-color: var(--amt-turquoise);
}

input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid #080C14;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ── Support request / ticket conversation ── */
.sr-message {
  background: var(--card-bg);
  border-color: var(--border-color);
}

.sr-message:hover {
  background: var(--bg-hover);
}

.sr-org-reseller {
  background: rgba(139, 92, 246, 0.15);
  color: #A78BFA;
}

.sr-org-customer {
  background: rgba(79, 195, 202, 0.15);
  color: var(--amt-turquoise);
}

/* Thread post — card-style with clear separation */
.sr-thread-post {
  margin-bottom: 4px;
  padding: 0;
}

.sr-thread-body {
  padding: 12px 16px 20px 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  margin-bottom: 8px;
}

.sr-thread-body:hover {
  background: rgba(255, 255, 255, 0.035);
  border-color: rgba(255, 255, 255, 0.06);
}

/* Author name brighter */
.sr-thread-author {
  color: #F1F5F9;
}

/* Message text — higher contrast */
.sr-thread-message {
  color: #CBD5E1;
  line-height: 1.75;
}

/* Time stamp */
.sr-thread-time {
  color: #64748B;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
}

/* Org label badge — more visible */
.sr-thread-org {
  background: rgba(79, 195, 202, 0.1);
  color: var(--amt-turquoise);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* Staff avatar */
.sr-thread-avatar.sr-org-staff {
  background: linear-gradient(135deg, #1E293B, #334155);
  box-shadow: 0 0 0 2px var(--bg-primary);
}

/* Customer avatar */
.sr-thread-avatar.sr-org-customer {
  background: linear-gradient(135deg, #3B82F6, #6366F1);
  box-shadow: 0 0 0 2px var(--bg-primary);
}

/* Rail connector line */
.sr-thread-rail::after {
  background: rgba(255, 255, 255, 0.04) !important;
}

/* Compose area */
.sr-compose-textarea {
  background: var(--bg-primary) !important;
  border-color: var(--border-medium) !important;
  color: var(--text-primary) !important;
}

.sr-compose-textarea:focus {
  border-color: var(--amt-turquoise) !important;
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.1) !important;
}

.sr-compose-textarea::placeholder {
  color: var(--text-muted) !important;
}

/* Attachment links in thread */
.sr-thread-attachment-link {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.06);
  color: var(--amt-turquoise);
}

.sr-thread-attachment-link:hover {
  background: rgba(79, 195, 202, 0.06);
  border-color: rgba(79, 195, 202, 0.15);
}

/* ── Active filters ── */
.active-filters {
  background: var(--bg-secondary);
}

.filter-tag {
  background: rgba(79, 195, 202, 0.08);
  border-color: rgba(79, 195, 202, 0.15);
  color: var(--amt-turquoise);
}

/* ── Reseller theme adjustments ── */
/* Override the reseller-theme variables from portal.css to match Deep Obsidian */
body.reseller-theme {
  --sidebar-bg: #0B1120;
  --sidebar-bg-hover: rgba(79, 195, 202, 0.06);
  --sidebar-text: rgba(255, 255, 255, 0.55);
  --sidebar-text-bright: #FFFFFF;
  --sidebar-border: rgba(255, 255, 255, 0.06);
  --sidebar-active-bg: rgba(79, 195, 202, 0.1);
}

.reseller-theme .portal-nav {
  background: var(--sidebar-bg);
}

.reseller-theme .portal-header {
  background: var(--sidebar-bg);
}

/* ── Mobile responsive ── */
@media (max-width: 768px) {
  .dashboard-charts {
    grid-template-columns: 1fr;
  }

  .portal-content {
    background: var(--bg-primary);
  }

  .modal {
    background: var(--bg-secondary);
    border-color: var(--border-color);
  }

  .modal-header {
    background: var(--bg-tertiary);
  }
}

@media (max-width: 480px) {
  .chart-card {
    padding: 16px;
  }

  .donut-chart {
    width: 120px;
    height: 120px;
  }

  .bar-chart {
    height: 100px;
  }
}

/* ============ KNOWLEDGE CENTER ============ */

.kc-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  font-size: 13px;
}
.kc-breadcrumb-sep { color: var(--text-muted); }
.kc-breadcrumb-link { color: var(--primary); text-decoration: none; }
.kc-breadcrumb-link:hover { text-decoration: underline; }
.kc-breadcrumb-current { color: var(--text-muted); }

.kc-filters {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.kc-tag-filters, .kc-difficulty-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kc-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.kc-course-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.kc-course-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.kc-card-thumb {
  height: 160px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.kc-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.kc-thumb-placeholder { color: var(--text-muted); opacity: 0.3; }
.kc-thumb-placeholder svg { width: 48px; height: 48px; }

.kc-card-body { padding: 16px; }
.kc-card-body h3 { margin: 0 0 8px; font-size: 16px; }
.kc-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.kc-card-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }

.kc-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}

.kc-difficulty {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.kc-diff-beginner { background: rgba(93,187,99,0.15); color: #5DBB63; }
.kc-diff-intermediate { background: rgba(245,158,11,0.15); color: #F59E0B; }
.kc-diff-advanced { background: rgba(239,68,68,0.15); color: #EF4444; }

.kc-progress-bar {
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  margin-top: 12px;
  overflow: hidden;
}
.kc-progress-bar.kc-progress-lg { height: 8px; border-radius: 4px; }
.kc-progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: inherit;
  transition: width 0.3s;
}
.kc-progress-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  display: block;
}

.kc-completed-badge {
  display: inline-block;
  background: rgba(93,187,99,0.15);
  color: #5DBB63;
  padding: 6px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  margin-top: 12px;
}

/* Course detail */
.kc-course-header { margin-bottom: 32px; }
.kc-course-header h1 { margin: 0 0 8px; }
.kc-course-desc { color: var(--text-muted); margin-bottom: 16px; }
.kc-course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Modules */
.kc-modules { display: flex; flex-direction: column; gap: 12px; }
.kc-module {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
}
.kc-module-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  cursor: pointer;
  user-select: none;
}
.kc-module-header:hover { background: var(--bg-secondary); }
.kc-module-expand { font-size: 14px; color: var(--text-muted); width: 16px; }
.kc-module-header h3 { margin: 0; font-size: 15px; flex: 1; }
.kc-module-progress { font-size: 12px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
.kc-module-body { border-top: 1px solid var(--border-color); }

.kc-lesson-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px 12px 44px;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s;
}
.kc-lesson-item:last-child { border-bottom: none; }
.kc-lesson-item:hover:not(.kc-lesson-locked) { background: var(--bg-secondary); }
.kc-lesson-locked { opacity: 0.5; cursor: not-allowed; }
.kc-lesson-status { font-size: 16px; width: 24px; text-align: center; }
.kc-lesson-info { flex: 1; }
.kc-lesson-title { display: block; font-size: 14px; }
.kc-lesson-dur { font-size: 12px; color: var(--text-muted); }
.kc-lesson-completed .kc-lesson-status { color: #5DBB63; }

/* Lesson view */
.kc-lesson-header { margin-bottom: 24px; }
.kc-lesson-header h1 { margin: 0 0 8px; }
.kc-lesson-content { margin-bottom: 32px; }

.kc-block { margin-bottom: 24px; }
.kc-block-text { line-height: 1.7; }
.kc-block-image img { max-width: 100%; border-radius: 8px; }
.kc-caption { font-size: 13px; color: var(--text-muted); margin-top: 6px; font-style: italic; }

.kc-block-video .kc-video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
}
.kc-video-wrap iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border-radius: 8px;
}

.kc-block-gallery .kc-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.kc-gallery-item img { width: 100%; border-radius: 8px; }

.kc-file-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}
.kc-file-card svg { width: 32px; height: 32px; color: var(--primary); flex-shrink: 0; }

.kc-steps { padding-left: 20px; }
.kc-step { margin-bottom: 16px; }
.kc-step strong { display: block; margin-bottom: 4px; }
.kc-step p { color: var(--text-muted); margin: 0; }

.kc-block-callout {
  display: flex;
  gap: 12px;
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid;
}
.kc-callout-warning, .kc-callout-caution { border-color: #F59E0B; background: rgba(245,158,11,0.08); }
.kc-callout-info { border-color: var(--primary); background: rgba(79,195,202,0.08); }
.kc-callout-tip { border-color: #5DBB63; background: rgba(93,187,99,0.08); }
.kc-callout-icon { font-size: 20px; flex-shrink: 0; }
.kc-callout-content { flex: 1; }
.kc-callout-content strong { display: block; margin-bottom: 4px; }

.kc-quiz-card {
  padding: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  text-align: center;
}
.kc-quiz-card h3 { margin: 0 0 8px; }
.kc-quiz-meta { font-size: 13px; color: var(--text-muted); margin: 8px 0 16px; }

/* Quiz taking */
.kc-question {
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 16px;
}
.kc-question h3 { margin: 0 0 8px; font-size: 13px; color: var(--text-muted); text-transform: uppercase; }
.kc-question-text { margin: 0 0 16px; font-size: 15px; }
.kc-answer-option {
  display: block;
  padding: 10px 14px;
  margin-bottom: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.kc-answer-option:hover { border-color: var(--primary); }
.kc-answer-option input { margin-right: 8px; }

.kc-order-steps { display: flex; flex-direction: column; gap: 6px; }
.kc-order-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: grab;
}
.kc-order-item.dragging { opacity: 0.5; }
.kc-drag-handle { color: var(--text-muted); cursor: grab; }

/* Quiz results */
.kc-quiz-results { text-align: center; padding: 32px 0; }
.kc-result-score { margin: 24px 0; }
.kc-score-value { display: block; font-size: 48px; font-weight: 700; color: var(--primary); font-family: 'JetBrains Mono', monospace; }
.kc-score-label { font-size: 14px; color: var(--text-muted); }
.kc-result-details {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 24px 0;
}
.kc-result-item {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
}
.kc-result-item.correct { background: rgba(93,187,99,0.12); color: #5DBB63; }
.kc-result-item.incorrect { background: rgba(239,68,68,0.12); color: #EF4444; }
.kc-explanation { font-size: 12px; margin-top: 4px; opacity: 0.8; }

/* Feedback */
.kc-lesson-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 24px;
}
.kc-feedback { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-muted); }
.kc-thumb {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 18px;
  transition: background 0.15s;
}
.kc-thumb:hover { background: var(--bg-secondary); }

.kc-lesson-nav { padding: 16px 0; }

@media (max-width: 640px) {
  .kc-course-grid { grid-template-columns: 1fr; }
  .kc-lesson-footer { flex-direction: column; gap: 16px; }
}

/* ── Knowledge Center Filters ── */
.kc-filters {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.kc-filters .form-input,
.kc-filters input[type="text"] {
  width: 100%;
  max-width: 420px;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-family);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.kc-filters .form-input:focus,
.kc-filters input[type="text"]:focus {
  outline: none;
  border-color: var(--amt-turquoise);
  box-shadow: 0 0 0 3px rgba(79, 195, 202, 0.12);
}
.kc-filters .form-input::placeholder,
.kc-filters input[type="text"]::placeholder {
  color: var(--text-muted);
}

.kc-tag-filters,
.kc-difficulty-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Filter chip — matches the Nexus design system */
.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-family);
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.filter-chip:hover {
  color: var(--amt-turquoise);
  border-color: var(--amt-turquoise);
  background: rgba(79, 195, 202, 0.06);
}
.filter-chip.active {
  color: #0B1120;
  background: var(--amt-turquoise);
  border-color: var(--amt-turquoise);
  font-weight: 600;
}

/* Tag filter chips with color backgrounds */
.kc-tag-filters .filter-chip {
  font-size: 12px;
  padding: 5px 14px;
}
.kc-tag-filters .filter-chip[style*="background"] {
  border-color: transparent;
  color: white;
  font-weight: 600;
}

/* Operator visibility toggle bar */
.kc-operator-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 13px;
}
.kc-operator-toggle span {
  color: var(--text-muted);
}
.kc-operator-toggle button {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-family);
  color: var(--amt-turquoise);
  background: transparent;
  border: 1px solid rgba(79, 195, 202, 0.3);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}
.kc-operator-toggle button:hover {
  background: rgba(79, 195, 202, 0.1);
}

/* ══════════════════════════════════════════════
   Knowledge Center — Course Detail Layout
   ══════════════════════════════════════════════ */

.kc-detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

.kc-detail-main { min-width: 0; }

.kc-detail-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 12px;
  line-height: 1.2;
  font-family: var(--font-family);
}

.kc-detail-desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.kc-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.kc-meta-chip {
  font-size: 13px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.kc-detail-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 4px; }

.kc-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 20px 0;
}

.kc-curriculum-heading {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 16px;
  font-family: var(--font-family);
}

/* ── Progress sidebar card ── */
.kc-detail-sidebar { position: sticky; top: 24px; }

.kc-progress-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
}

.kc-progress-thumb {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: var(--bg-tertiary);
}
.kc-progress-thumb img { width: 100%; height: 100%; object-fit: cover; }

.kc-progress-inner { padding: 20px; }

.kc-progress-text {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-family: 'JetBrains Mono', monospace;
}

.kc-progress-bar.kc-progress-lg {
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 3px;
  margin-bottom: 16px;
}

.kc-resume-btn {
  width: 100%;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-family);
  color: #0B1120;
  background: var(--amt-turquoise);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
}
.kc-resume-btn:hover { background: #5DD4DB; box-shadow: 0 0 20px rgba(79, 195, 202, 0.25); }
.kc-resume-btn.kc-resume-completed { background: rgba(16, 185, 129, 0.15); color: #34D399; cursor: default; }

.kc-cert-btn {
  width: 100%;
  padding: 10px 16px;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-family);
  color: var(--amt-turquoise);
  background: transparent;
  border: 1px solid rgba(79, 195, 202, 0.3);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
}
.kc-cert-btn:hover { background: rgba(79, 195, 202, 0.08); }

/* About card */
.kc-about-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
}
.kc-about-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 12px;
  font-family: var(--font-family);
}
.kc-about-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  margin: 0;
}
.kc-about-list dt { font-size: 13px; color: var(--text-muted); }
.kc-about-list dd { font-size: 13px; color: var(--text-primary); margin: 0; font-family: 'JetBrains Mono', monospace; }

/* ── Module styles ── */
.kc-module {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 8px;
  overflow: hidden;
  background: var(--card-bg);
}

.kc-module-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  transition: background 0.1s;
}
.kc-module-header:hover { background: var(--bg-hover); }
.kc-module-header.kc-module-locked { cursor: default; opacity: 0.5; }
.kc-module-header.kc-module-done { border-left: 3px solid #10b981; }

.kc-module-expand { font-size: 14px; color: var(--text-muted); width: 16px; text-align: center; flex-shrink: 0; }

.kc-module-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  flex: 1;
  font-family: var(--font-family);
}

.kc-module-prog { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.kc-mod-complete { font-size: 12px; font-weight: 600; color: #34D399; }
.kc-mod-locked-label { font-size: 12px; color: var(--text-muted); }
.kc-module-progress { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-muted); }
.kc-module-body { border-top: 1px solid var(--border-color); }

/* ── Lesson items ── */
.kc-lesson-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px 12px 42px;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.1s;
}
.kc-lesson-item:last-child { border-bottom: none; }
.kc-lesson-item:hover:not(.kc-lesson-locked) { background: var(--bg-hover); }

.kc-lesson-status {
  width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; flex-shrink: 0; font-weight: 700;
}
.kc-status-done { background: #10b981; color: white; }
.kc-status-pending { border: 2px solid var(--border-medium); background: transparent; }
.kc-status-locked { border: 2px solid var(--border-color); background: var(--bg-secondary); opacity: 0.4; }

.kc-lesson-item .kc-lesson-title { flex: 1; font-size: 14px; color: var(--text-secondary); }
.kc-lesson-item.kc-lesson-done .kc-lesson-title { color: var(--text-primary); }
.kc-lesson-item.kc-lesson-locked .kc-lesson-title { opacity: 0.4; }

.kc-lesson-dur { font-size: 12px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; flex-shrink: 0; }

/* ══════════════════════════════════════════════
   Knowledge Center — Lesson View with Sidebar
   ══════════════════════════════════════════════ */

.kc-lesson-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  min-height: 70vh;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.kc-lesson-sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 0;
  position: sticky;
  top: 0;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.kc-sidebar-title { padding: 20px 16px 12px; border-bottom: 1px solid var(--border-color); }
.kc-sidebar-title a {
  display: block; color: var(--text-primary); text-decoration: none;
  font-size: 16px; font-weight: 700; font-family: var(--font-family); line-height: 1.3;
}
.kc-sidebar-title a:hover { color: var(--amt-turquoise); }
.kc-sidebar-overview { display: block; font-size: 13px; color: var(--text-muted); text-decoration: underline; margin-top: 4px; }
.kc-sidebar-overview:hover { color: var(--amt-turquoise); }

.kc-sidebar-nav { padding: 8px 0; }
.kc-sidebar-module { margin-bottom: 4px; }

.kc-sidebar-mod-label {
  padding: 10px 16px 6px;
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.kc-sidebar-lesson {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 16px; cursor: pointer; transition: all 0.1s;
  border-left: 3px solid transparent;
}
.kc-sidebar-lesson:hover { background: var(--bg-hover); }
.kc-sidebar-lesson.kc-sidebar-active { background: rgba(79, 195, 202, 0.08); border-left-color: var(--amt-turquoise); }
.kc-sidebar-lesson.kc-sidebar-done { opacity: 0.7; }

.kc-sidebar-icon {
  width: 18px; height: 18px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; flex-shrink: 0; font-weight: 700;
}
.kc-icon-done { background: #10b981; color: white; }
.kc-icon-pending { border: 2px solid var(--border-medium); background: transparent; }

.kc-sidebar-lesson-text { font-size: 13px; color: var(--text-secondary); line-height: 1.3; }
.kc-sidebar-active .kc-sidebar-lesson-text { color: var(--text-primary); font-weight: 500; }

/* ── Main lesson content ── */
.kc-lesson-main {
  padding: 32px 40px;
  min-width: 0;
  background: var(--bg-primary);
}

.kc-lesson-h1 {
  font-size: 28px; font-weight: 700; color: var(--text-primary);
  margin: 0 0 8px; line-height: 1.25; font-family: var(--font-family);
}
.kc-lesson-desc { font-size: 16px; color: var(--text-secondary); line-height: 1.6; margin: 0 0 6px; }
.kc-lesson-est { font-size: 14px; color: var(--text-muted); margin: 0; font-family: 'JetBrains Mono', monospace; }

.kc-lesson-content {
  font-size: 16px; line-height: 1.75; color: var(--text-secondary); max-width: 720px;
}
.kc-lesson-content h1, .kc-lesson-content h2, .kc-lesson-content h3 {
  color: var(--text-primary); margin: 24px 0 12px; font-family: var(--font-family);
}
.kc-lesson-content h1 { font-size: 24px; }
.kc-lesson-content h2 { font-size: 20px; }
.kc-lesson-content h3 { font-size: 17px; }
.kc-lesson-content p { margin: 0 0 16px; }
.kc-lesson-content ul, .kc-lesson-content ol { margin: 0 0 16px; padding-left: 24px; }
.kc-lesson-content li { margin-bottom: 6px; }
.kc-lesson-content img { max-width: 100%; border-radius: 8px; margin: 8px 0; }
.kc-lesson-content a { color: var(--amt-turquoise); }

/* ── Footer ── */
.kc-lesson-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0; margin-top: 24px; border-top: 1px solid var(--border-color); gap: 16px;
}
.kc-footer-left { display: flex; align-items: center; gap: 20px; }

.kc-complete-btn {
  padding: 10px 24px; font-size: 14px; font-weight: 600; font-family: var(--font-family);
  color: #0B1120; background: var(--amt-turquoise); border: none; border-radius: 8px;
  cursor: pointer; transition: all 0.15s;
}
.kc-complete-btn:hover { background: #5DD4DB; }
.kc-complete-btn.kc-completed { background: rgba(16, 185, 129, 0.15); color: #34D399; cursor: default; }

.kc-feedback { display: flex; align-items: center; gap: 8px; }
.kc-feed-label { font-size: 13px; color: var(--text-muted); }

.kc-next-btn {
  padding: 10px 24px; font-size: 14px; font-weight: 600; font-family: var(--font-family);
  color: var(--text-primary); background: var(--bg-tertiary);
  border: 1px solid var(--border-medium); border-radius: 8px;
  cursor: pointer; transition: all 0.15s; flex-shrink: 0;
}
.kc-next-btn:hover { background: var(--bg-hover); border-color: var(--amt-turquoise); color: var(--amt-turquoise); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .kc-detail-layout { grid-template-columns: 1fr; }
  .kc-detail-sidebar { position: static; order: -1; }
  .kc-lesson-layout { grid-template-columns: 1fr; }
  .kc-lesson-sidebar {
    position: static; max-height: none;
    border-right: none; border-bottom: 1px solid var(--border-color);
  }
  .kc-lesson-main { padding: 24px 20px; }
  .kc-lesson-footer { flex-direction: column; align-items: flex-start; }
}