:root {
  color-scheme: dark;
  --bg: #111418;
  --panel: #171c22;
  --panel-2: #1d232b;
  --panel-3: #242b34;
  --line: #303944;
  --line-soft: #252d36;
  --text: #edf2f7;
  --muted: #9aa7b4;
  --faint: #697684;
  --accent: #4fb7c5;
  --accent-strong: #76d0da;
  --danger: #ef6b73;
  --warning: #e5b857;
  --success: #65c883;
  --pink: #f9a8d4;
  --terminal: #090d10;
  --terminal-text: #90f5a9;
  --radius: 8px;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  --header-height: 56px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

html {
  scrollbar-color: var(--faint) var(--bg);
  scrollbar-width: thin;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.45;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

button,
select,
input[type="file"] {
  cursor: pointer;
}

a {
  color: var(--accent-strong);
}

.login-page {
  background:
    radial-gradient(circle at 20% 20%, rgba(79, 183, 197, 0.14), transparent 34%),
    linear-gradient(135deg, #111418 0%, #1a2027 50%, #12161b 100%);
}

#login-wrapper {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
}

#login {
  width: min(420px, 100%);
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
  padding: 32px;
  background: rgba(23, 28, 34, 0.92);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.login-brand {
  display: grid;
  justify-items: center;
  gap: 8px;
  margin-bottom: 8px;
  text-align: center;
}

.login-brand img {
  width: 92px;
  max-width: 80%;
  height: auto;
}

.login-brand strong,
.login-brand span {
  display: block;
}

.login-brand strong {
  font-size: 18px;
}

.login-brand span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.login-field {
  display: grid;
  gap: 7px;
}

.login-field span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.login-field input {
  min-height: 38px;
  padding: 8px 10px;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.login-error {
  color: var(--danger);
}

.login-browser-note,
#login-about {
  color: var(--muted);
  text-align: center;
}

#login-about {
  margin-top: 22px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  padding: 0 18px;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  border-bottom: 1px solid var(--line-soft);
  backdrop-filter: blur(12px);
}

.app-brand,
.app-actions,
.app-nav-link,
.lesson-header,
.terminal-tabbar,
.commandbar-layout,
.commandbar-primary,
.upload-controls,
.toolbar,
.command-form,
.guide-persona,
.guide-progress,
.guide-buttons,
.docs-header,
.docs-footer,
.docs-url-row,
.file-button {
  display: flex;
  align-items: center;
}

.app-brand {
  gap: 10px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.app-brand img {
  display: block;
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.app-actions {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.app-nav-link {
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
  background: transparent;
  text-decoration: none;
}

.app-nav-link[hidden],
.content-actions [hidden],
.content-empty [hidden] {
  display: none;
}

.app-nav-link:hover,
button.app-nav-link:focus {
  color: var(--text);
  background: var(--panel-2);
  border-color: var(--line);
}

.app-context {
  cursor: default;
}

.app-context:hover {
  color: var(--muted);
  background: transparent;
  border-color: transparent;
}

.manager-shell {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
  gap: 12px;
  min-height: calc(100vh - var(--header-height));
  padding: 12px;
}

.manager-sidebar,
.lesson-panel,
.portal-sim,
.docs-panel,
.training-card {
  min-width: 0;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.manager-sidebar {
  overflow: hidden;
}

.tree-search {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  margin: 10px 44px 8px 10px;
}

.compact-tree-search {
  margin-right: 10px;
}

.form-input,
.tree-search .form-input,
.terminal-commandbar select,
.docs-textarea {
  width: 100%;
  min-width: 0;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tree-search .form-input {
  height: 28px;
  padding: 4px 26px 4px 28px;
}

.tree-search .fa-search {
  position: absolute;
  left: 10px;
  z-index: 1;
  color: var(--muted);
  pointer-events: none;
}

.tree-refresh-controls {
  gap: 6px;
  min-height: 26px;
  margin: 0 10px 8px;
}

.tree-refresh-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 26px;
  padding: 0;
  color: var(--muted);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  background: var(--panel-2);
}

.tree-refresh-button:hover,
.icon-button:hover {
  color: var(--accent);
  border-color: var(--line);
  background: var(--panel-3);
}

.tree-refresh-controls small,
.topic-button small,
.lesson-header p,
.computer-tree-name small,
.empty-state,
.tree-empty,
.package-row span,
.package-row small,
.guide-persona span,
.terminal-tab.muted,
.docs-feature-summary,
.docs-footer small {
  color: var(--muted);
}

.topic-list {
  display: grid;
  align-content: start;
  grid-auto-rows: max-content;
  gap: 6px;
  height: calc(100vh - var(--header-height) - 72px);
  overflow: auto;
  padding: 10px;
}

.tree-empty {
  margin: 8px 4px;
  font-size: 0.85rem;
}

.topic-button {
  display: grid;
  align-content: start;
  gap: 3px;
  width: 100%;
  min-height: 76px;
  padding: 10px;
  color: var(--text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-align: left;
}

.topic-button:hover {
  color: var(--accent-strong);
  background: var(--panel-2);
  border-color: var(--line-soft);
}

.topic-button span,
.kicker {
  color: var(--accent-strong);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.topic-button strong {
  font-size: 15px;
}

.topic-button.is-active {
  color: var(--text);
  background: var(--panel-2);
  border-color: var(--line);
  box-shadow: inset 3px 0 0 var(--accent);
}

.topic-button.is-complete {
  box-shadow: inset 3px 0 0 var(--success);
}

.lesson-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: calc(100vh - var(--header-height) - 24px);
  padding: 12px;
}

.lesson-header {
  justify-content: space-between;
  gap: 14px;
  padding: 2px 2px 10px;
  border-bottom: 1px solid var(--line-soft);
}

.lesson-header h1 {
  margin: 2px 0 4px;
  font-size: 20px;
  letter-spacing: 0;
}

.lesson-header p {
  max-width: 820px;
  margin: 0;
}

.lesson-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  min-height: 0;
  flex: 1 1 auto;
}

.workspace {
  display: flex;
  min-width: 0;
  min-height: 0;
}

.workspace > * {
  flex: 1 1 auto;
  min-width: 0;
}

.portal-sim {
  display: grid;
  width: 100%;
  grid-template-columns: minmax(230px, 280px) minmax(0, 1fr);
  height: calc(100vh - var(--header-height) - 126px);
  min-height: 640px;
  overflow: hidden;
}

.portal-tree {
  min-width: 0;
  overflow: hidden;
  border-right: 1px solid var(--line-soft);
  background: var(--panel);
}

#users-list {
  height: calc(100% - 72px);
  overflow: auto;
  padding: 10px;
}

.tree-vessel,
.tree-computer {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 30px;
  padding: 6px 8px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--text);
  text-align: left;
}

.tree-vessel[hidden],
.tree-computer[hidden] {
  display: none;
}

.tree-vessel {
  gap: 8px;
  font-weight: 700;
}

.tree-vessel.is-offline {
  color: var(--muted);
}

.tree-computer {
  gap: 6px;
  margin-left: 16px;
  width: calc(100% - 16px);
  color: var(--muted);
}

.tree-vessel:hover,
.tree-computer:hover {
  color: var(--accent-strong);
  background: var(--panel-2);
}

.tree-vessel.is-expanded {
  color: var(--accent-strong);
}

.tree-computer.is-selected {
  color: var(--text);
  background: rgba(79, 183, 197, 0.09);
  box-shadow: inset 3px 0 0 var(--accent);
}

.computer-tree-name {
  min-width: 0;
  flex: 1 1 auto;
}

.ship-status {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14);
}

.ship-status-online {
  background: var(--success);
  box-shadow: 0 0 8px rgba(84, 214, 136, 0.55);
}

.ship-status-offline {
  background: var(--danger);
  box-shadow: 0 0 0 0 rgba(248, 113, 113, 0.62);
  animation: offline-pulse 1.45s ease-out infinite;
}

.vessel-context-menu {
  position: fixed;
  z-index: 95;
  display: grid;
  gap: 4px;
  width: 220px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.vessel-context-menu.is-hidden {
  display: none;
}

.vessel-context-menu button {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  min-height: 32px;
  padding: 6px 9px;
  color: var(--warning);
  background: var(--panel-2);
  border: 1px solid rgba(251, 191, 36, 0.38);
  border-radius: 6px;
  font-weight: 700;
}

.vessel-context-menu button:hover {
  color: var(--warning);
  background: var(--panel-3);
  border-color: rgba(251, 191, 36, 0.58);
}

@keyframes offline-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(248, 113, 113, 0.62);
  }

  70% {
    box-shadow: 0 0 0 8px rgba(248, 113, 113, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(248, 113, 113, 0);
  }
}

.computer-tree-name strong,
.computer-tree-name small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pc-heartbeat {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.pc-heartbeat-fresh {
  background: var(--success);
  box-shadow: 0 0 8px rgba(84, 214, 136, 0.55);
}

.pc-heartbeat-degraded {
  background: #f59e0b;
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.55);
}

.pc-idle-badge,
.pc-slow-badge {
  flex: 0 0 auto;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 700;
  line-height: 1.2;
}

.pc-idle-badge {
  color: #7dd3fc;
  border: 1px solid rgba(56, 189, 248, 0.4);
}

.pc-slow-badge {
  color: #fdba74;
  border: 1px solid rgba(251, 146, 60, 0.35);
}

.portal-main {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  background: var(--terminal);
}

.terminal-tabbar {
  flex: 0 0 auto;
  align-items: flex-end;
  gap: 4px;
  min-height: 40px;
  padding: 8px 8px 0;
  background: var(--panel);
  border-bottom: 1px solid var(--line-soft);
}

.terminal-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  max-width: 240px;
  padding: 4px 10px;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: var(--panel-2);
  border: 1px solid var(--line-soft);
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
}

.terminal-tab.is-active {
  color: var(--accent-strong);
  background: var(--terminal);
  border-color: var(--line);
}

.terminal-tab-spacer {
  flex: 1 1 auto;
  min-width: 8px;
}

.terminal-mode-button {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 4px 10px;
  color: var(--success);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
  background: var(--panel-2);
  border: 1px solid rgba(84, 214, 136, 0.38);
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
}

.terminal-mode-button:hover {
  color: #b7f7c9;
  background: var(--terminal);
  border-color: rgba(84, 214, 136, 0.62);
}

#terminal,
.terminal-surface {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  background: var(--terminal);
}

.terminal-output {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
  background: var(--terminal);
}

.display {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 100%;
  padding: 12px;
  overflow: auto;
  background: var(--terminal);
  color: var(--terminal-text);
}

.tty {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
}

.terminal-line {
  min-height: 20px;
  white-space: pre-wrap;
}

.terminal-line.notice {
  color: #88c6ff;
}

.terminal-line.success {
  color: #8ef0aa;
}

.commandbar-wrapper,
.terminal-input,
.toolbar {
  flex: 0 0 auto;
  background: var(--terminal);
  border-top: 1px solid var(--line-soft);
}

.commandbar-wrapper,
.terminal-input > .tty,
.toolbar {
  padding: 10px;
}

.commandbar-layout {
  justify-content: space-between;
  gap: 12px;
}

.commandbar-primary,
.upload-controls {
  gap: 8px;
}

.command-label {
  color: var(--muted);
  font-size: 12px;
}

.terminal-commandbar select {
  width: min(320px, 42vw);
  min-height: 32px;
  padding: 5px 8px;
}

.terminal-commandbar button,
.ghost-button,
.primary-button,
.file-button,
.toolbar button {
  min-height: 32px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  font-weight: 700;
}

.terminal-commandbar button:hover,
.ghost-button:hover,
.file-button:hover,
.toolbar button:hover {
  border-color: var(--accent);
  background: var(--panel-3);
}

.primary-button {
  color: #071015;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 800;
}

.primary-button:hover {
  background: var(--accent-strong);
}

.primary-button.is-pulsing,
.toolbar button.is-pulsing {
  animation: run-button-pulse 1.25s ease-in-out infinite;
}

@keyframes run-button-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(35, 200, 255, 0.42);
  }

  50% {
    box-shadow: 0 0 0 6px rgba(35, 200, 255, 0);
  }
}

.primary-button:disabled,
.ghost-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.command-form {
  gap: 8px;
}

.command-form span {
  color: var(--terminal-text);
  white-space: nowrap;
}

.command-form input {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 34px;
  padding: 6px 9px;
  color: var(--text);
  background: #080c0f;
  border: 1px solid #26323b;
  border-radius: var(--radius);
}

.toolbar {
  flex-wrap: nowrap;
  gap: 6px;
  overflow-x: visible;
  overflow-y: visible;
}

.toolbar button {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 6px;
  min-height: 31px;
  color: var(--muted);
}

.toolbar-dropdown {
  position: relative;
  z-index: 50;
  flex: 0 0 auto;
}

.toolbar-menu {
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  top: auto;
  z-index: 90;
  display: none;
  min-width: 210px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.toolbar-dropdown.is-open .toolbar-menu {
  display: grid;
  gap: 4px;
}

.toolbar-menu button {
  justify-content: flex-start;
  width: 100%;
  color: var(--warning);
  border-color: rgba(251, 191, 36, 0.38);
}

.toolbar-menu button:hover {
  color: var(--warning);
  background: var(--panel-3);
  border-color: rgba(251, 191, 36, 0.58);
}

.toolbar-spacer {
  flex: 1 1 auto;
  min-width: 12px;
}

.toolbar-danger {
  color: var(--danger) !important;
  border-color: rgba(248, 113, 113, 0.5) !important;
}

.toolbar-explorer {
  color: var(--success) !important;
  border-color: rgba(84, 214, 136, 0.45) !important;
}

.toolbar-saved {
  color: var(--pink) !important;
  border-color: rgba(244, 114, 182, 0.36) !important;
}

.toolbar-util,
.toolbar-script {
  color: var(--accent) !important;
  border-color: rgba(35, 200, 255, 0.32) !important;
}

.toolbar-ops {
  color: var(--warning) !important;
  border-color: rgba(251, 191, 36, 0.38) !important;
}

.toolbar-end {
  color: var(--muted) !important;
  border-color: rgba(148, 163, 184, 0.3) !important;
}

.empty-state {
  display: grid;
  min-height: 112px;
  place-items: center;
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
}

.docs-panel {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(5, 8, 10, 0.68);
  backdrop-filter: blur(4px);
}

.control-info-panel {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(5, 8, 10, 0.46);
  backdrop-filter: blur(3px);
}

.docs-panel.is-hidden {
  display: none;
}

.control-info-panel.is-hidden {
  display: none;
}

.docs-modal-card {
  display: flex;
  width: min(1040px, calc(100vw - 32px));
  max-height: min(860px, calc(100vh - 32px));
  min-height: min(620px, calc(100vh - 32px));
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.control-info-card {
  display: grid;
  gap: 12px;
  width: min(520px, calc(100vw - 32px));
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.control-info-card h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 2px 0 0;
  font-size: 18px;
}

.control-info-card p {
  margin: 0;
  color: var(--muted);
}

.docs-header,
.docs-footer {
  flex: 0 0 auto;
  justify-content: space-between;
  gap: 10px;
}

.docs-header h2 {
  margin: 2px 0 0;
  font-size: 17px;
}

.docs-feature-summary {
  margin: 0;
}

.docs-body {
  display: flex;
  min-height: 0;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 10px;
  overflow: auto;
  padding-right: 2px;
}

.docs-error {
  margin: 0;
  color: var(--danger);
}

.docs-textarea {
  min-height: 320px;
  padding: 10px;
  resize: vertical;
  line-height: 1.5;
}

.docs-upload {
  display: grid;
  gap: 8px;
}

.file-button {
  justify-content: center;
  gap: 8px;
  position: relative;
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.docs-url-row {
  gap: 8px;
}

.docs-markdown {
  display: grid;
  align-content: start;
  grid-auto-rows: max-content;
  gap: 8px;
  padding: 10px;
  overflow: auto;
  color: #bac5d1;
  background: #101418;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.docs-markdown h1,
.docs-markdown h2,
.docs-markdown h3,
.docs-markdown p,
.docs-markdown ul,
.docs-markdown pre {
  margin: 0;
}

.docs-markdown h1 {
  color: var(--text);
  font-size: 20px;
}

.docs-markdown h2 {
  color: var(--text);
  font-size: 17px;
}

.docs-markdown h3 {
  color: var(--text);
  font-size: 15px;
}

.docs-markdown strong {
  color: #eef4fb;
}

.docs-markdown a {
  color: var(--accent);
}

.docs-markdown ul {
  padding-left: 20px;
}

.markdown-spacer {
  display: block;
  min-height: 14px;
}

.docs-color {
  font-weight: 600;
}

.docs-color-red {
  color: var(--danger);
}

.docs-color-green {
  color: var(--success);
}

.docs-color-yellow {
  color: var(--warning);
}

.docs-color-blue,
.docs-color-cyan {
  color: var(--accent);
}

.docs-color-pink {
  color: var(--pink);
}

.docs-color-muted {
  color: var(--muted);
}

.docs-color-white {
  color: var(--text);
}

.docs-markdown code,
.docs-markdown pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.docs-markdown code {
  padding: 1px 4px;
  background: var(--terminal);
  border-radius: 4px;
}

.docs-markdown pre {
  padding: 10px;
  overflow: auto;
  background: var(--terminal);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.docs-markdown img,
.docs-markdown video {
  display: block;
  max-width: 100%;
  max-height: 340px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.docs-markdown video {
  width: min(100%, 720px);
  background: var(--terminal);
}

.content-topic {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  flex-direction: column;
  padding: 18px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.content-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.content-actions .ghost-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.content-markdown {
  flex: 1 1 auto;
  width: 100%;
  max-width: none;
  min-height: 0;
  margin: 0;
  padding: 18px;
  overflow: auto;
  background: #101418;
}

.content-markdown h1 {
  font-size: 24px;
}

.content-markdown img {
  max-height: 520px;
}

.content-empty {
  display: grid;
  min-height: 420px;
  place-content: center;
  justify-items: center;
  gap: 10px;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

.content-empty strong {
  color: var(--text);
  font-size: 18px;
}

.docs-notes.empty-state {
  display: grid;
  min-height: 130px;
  color: var(--muted);
}

.docs-screenshots {
  display: grid;
  gap: 10px;
}

.docs-shot {
  margin: 0;
  overflow: hidden;
  background: var(--panel-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.docs-shot img {
  display: block;
  width: 100%;
  max-height: 220px;
  object-fit: contain;
  background: var(--terminal);
}

.docs-shot figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px;
  color: var(--muted);
}

.docs-shot button {
  border: 0;
  background: transparent;
  color: var(--danger);
}

.docs-footer > div {
  display: flex;
  gap: 8px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 3px 9px;
  color: var(--muted);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.training-card {
  padding: 12px;
}

.guide-card {
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 40;
  display: grid;
  gap: 10px;
  width: min(390px, calc(100vw - 28px));
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.guide-card.is-hidden {
  display: none;
}

.guide-persona {
  gap: 10px;
}

.guide-avatar {
  width: 34px;
  height: 34px;
  display: block;
  object-fit: cover;
  background: var(--terminal);
  border: 1px solid var(--line);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(35, 200, 255, 0.2);
}

.guide-persona strong,
.guide-persona span {
  display: block;
}

.guide-progress {
  justify-content: space-between;
  gap: 10px;
}

.guide-close {
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
}

.guide-card h2 {
  margin: 0;
  font-size: 18px;
}

.guide-card p {
  margin: 0;
  color: var(--muted);
}

.step-action {
  padding: 10px 12px;
  color: #ffe2a3;
  background: rgba(229, 184, 87, 0.12);
  border: 1px solid rgba(229, 184, 87, 0.38);
  border-radius: var(--radius);
  font-weight: 800;
}

.guide-buttons {
  justify-content: flex-end;
  gap: 8px;
}

.is-guide-target {
  outline: 3px solid rgba(229, 184, 87, 0.55);
  outline-offset: -3px;
}

.welcome-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(5, 8, 10, 0.74);
  backdrop-filter: blur(4px);
}

.welcome-overlay.is-hidden {
  display: none;
}

.welcome-modal {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  width: min(560px, 100%);
  padding: 20px;
  background: rgba(16, 20, 24, 0.98);
  border: 1px solid rgba(35, 200, 255, 0.46);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.welcome-avatar {
  grid-row: span 2;
  width: 96px;
  height: 96px;
  object-fit: cover;
  background: var(--terminal);
  border: 1px solid rgba(35, 200, 255, 0.58);
  border-radius: 50%;
  box-shadow: 0 0 34px rgba(35, 200, 255, 0.28);
}

.welcome-copy {
  display: grid;
  gap: 8px;
}

.welcome-copy span {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.welcome-copy h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: 0;
}

.welcome-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

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

@media (max-width: 1180px) {
  .manager-shell,
  .portal-sim {
    grid-template-columns: 1fr;
  }

  .portal-sim,
  .lesson-panel {
    height: auto;
    min-height: auto;
  }

  .topic-list {
    height: auto;
    max-height: 260px;
  }

  .portal-tree {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  #users-list {
    height: auto;
    max-height: 220px;
  }

  .terminal-output {
    min-height: 420px;
  }
}

@media (max-width: 720px) {
  .app-header,
  .lesson-header,
  .commandbar-layout,
  .docs-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .app-header {
    position: static;
    padding: 10px;
  }

  .manager-shell {
    padding: 10px;
  }

  .portal-sim {
    min-height: auto;
  }

  .terminal-commandbar select,
  .command-form input,
  .docs-url-row input {
    min-width: 100%;
  }

  .commandbar-primary,
  .upload-controls,
  .command-form,
  .docs-url-row {
    flex-wrap: wrap;
  }

  .guide-card {
    position: static;
    width: calc(100vw - 20px);
    margin: 0 auto 18px;
  }

  .welcome-modal {
    grid-template-columns: 1fr;
  }

  .welcome-avatar {
    grid-row: auto;
    width: 82px;
    height: 82px;
  }

  .docs-panel {
    padding: 10px;
    place-items: stretch;
  }

  .docs-modal-card {
    width: 100%;
    min-height: calc(100vh - 20px);
    max-height: calc(100vh - 20px);
  }

}