:root {
  --app-bg: #11193b;
  --frame-bg: #1b2759;
  --panel-bg: #202d5d;
  --panel-raised: #263669;
  --text-primary: #f7f8ff;
  --text-secondary: #b7c2e3;
  --border-soft: rgba(159, 178, 239, 0.2);
  --accent-purple: #9a5cff;
  --accent-blue: #4e8cff;
  --accent-lime: #9be83d;
  --accent-coral: #ff687c;
  --accent-orange: #ff8a67;
  --radius-panel: 12px;
  --radius-control: 8px;
  --shadow-panel: 0 14px 30px rgba(5, 10, 37, 0.2);
  --font-ui: system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --brand: var(--accent-purple);
  --brand-strong: #7847dc;
  --brand-soft: #2a3d78;
  --brand-pale: #253568;
  --coral: var(--accent-coral);
  --warning: var(--accent-orange);
  --blue: var(--accent-blue);
  --canvas: var(--app-bg);
  --surface: var(--panel-bg);
  --surface-subtle: var(--panel-raised);
  --ink: var(--text-primary);
  --muted: var(--text-secondary);
  --line: var(--border-soft);
  --line-strong: rgba(159, 178, 239, 0.34);
  --analysis: #151f49;
  --analysis-raised: var(--panel-raised);
  --analysis-line: #3b4b7d;
  --analysis-muted: #a8b4db;
  --mint: var(--accent-blue);
  --warm-yellow: var(--accent-lime);
  --radius-label: 6px;
  --topbar-height: 64px;
  --sidebar-width: 216px;
  --dock-height: 68px;
  --font-sans: var(--font-ui);
  --font-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--app-bg);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 16px;
  letter-spacing: 0;
}

html {
  color-scheme: dark;
}

body {
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

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

button {
  cursor: pointer;
  touch-action: manipulation;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: var(--radius-control);
  color: var(--text-primary);
  background: var(--brand-strong);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.hidden {
  display: none !important;
}

.section-kicker,
.eyebrow,
.meta {
  margin: 0;
  color: var(--brand);
  font: 700 11px/1.2 var(--font-mono);
  text-transform: uppercase;
}

.section-kicker.light {
  color: var(--text-secondary);
}

.section-kicker.dark {
  color: var(--mint);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--warning);
}

.status-dot.online {
  background: #37ad7b;
  box-shadow: 0 0 0 3px rgba(55, 173, 123, 0.15);
}

.status-pill,
.pill {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-label);
  padding: 0 9px;
  color: var(--text-primary);
  background: var(--brand-soft);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.pill.status-good {
  color: var(--accent-lime);
  background: rgba(155, 232, 61, 0.14);
}

.pill.warn {
  color: var(--accent-orange);
  background: rgba(255, 138, 103, 0.14);
}

.pill.bad {
  color: var(--accent-coral);
  background: rgba(255, 104, 124, 0.14);
}

.pill.neutral {
  color: var(--text-secondary);
  background: var(--panel-raised);
}

/* Login */
.login-screen {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 44% 56%;
  background: var(--app-bg);
}

.login-brand-pane {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: 28px;
  min-height: 100vh;
  padding: 42px 56px 32px;
  overflow: hidden;
  color: var(--text-primary);
  background: var(--frame-bg);
}

.platform-lockup,
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.platform-lockup {
  position: relative;
  z-index: 1;
  font-size: 17px;
  font-weight: 700;
}

.platform-mark,
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-control);
  font: 800 14px/1 var(--font-mono);
}

.platform-mark {
  color: var(--text-primary);
  background: var(--accent-purple);
}

.login-intro {
  position: relative;
  z-index: 1;
  align-self: center;
  max-width: 600px;
}

.login-intro h1 {
  max-width: 12ch;
  margin: 18px 0 20px;
  font-size: 48px;
  line-height: 1.18;
  letter-spacing: 0;
}

.login-intro > p:last-child {
  max-width: 34em;
  margin: 0;
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.75;
}

.login-device-summary {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-panel);
  background: var(--panel-bg);
}

.login-device-summary span {
  display: grid;
  gap: 5px;
  padding: 16px;
  border-right: 1px solid var(--border-soft);
}

.login-device-summary span:last-child {
  border-right: 0;
}

.login-device-summary strong {
  font-size: 19px;
}

.login-device-summary small,
.login-copyright {
  color: var(--text-secondary);
  font-size: 11px;
}

.login-copyright {
  position: relative;
  z-index: 1;
  margin: 0;
  font-family: var(--font-mono);
}

.login-form-pane {
  display: grid;
  place-items: center;
  align-content: center;
  min-height: 100vh;
  padding: 50px 8vw;
  background: var(--app-bg);
}

.login-panel {
  width: 100%;
  max-width: 470px;
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  padding: 34px;
  background: var(--surface);
  box-shadow: var(--shadow-panel);
}

.login-panel-head,
.panel-header,
.workspace-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.login-panel-head h2 {
  margin: 8px 0 0;
  font-size: 26px;
  line-height: 1.25;
}

.role-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 28px 0 22px;
  padding: 4px;
  border-radius: var(--radius-panel);
  background: var(--frame-bg);
}

.role-choice {
  display: grid;
  gap: 3px;
  min-height: 62px;
  border: 0;
  border-radius: var(--radius-control);
  padding: 10px 12px;
  color: var(--muted);
  background: transparent;
  text-align: left;
}

.role-choice span {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.role-choice small {
  font-size: 11px;
}

.role-choice.active {
  color: var(--brand);
  background: var(--surface);
  box-shadow: 0 2px 8px rgba(5, 10, 37, 0.24);
}

.login-form {
  display: grid;
  gap: 16px;
}

.login-form label,
.field {
  display: grid;
  gap: 7px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
}

.login-form input,
.field input,
.field textarea,
.field select,
.tool-row select {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-control);
  padding: 9px 11px;
  color: var(--ink);
  background: var(--surface);
}

.field textarea {
  min-height: 126px;
  resize: vertical;
}

.login-form input:focus,
.field input:focus,
.field textarea:focus,
.field select:focus,
.tool-row select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(154, 92, 255, 0.18);
}

.login-submit {
  justify-content: space-between;
  width: 100%;
  margin-top: 4px;
}

.login-hint,
.login-status,
.login-security {
  margin: 0;
  font-size: 12px;
}

.login-hint,
.login-security {
  color: var(--muted);
}

.login-status {
  min-height: 19px;
  color: var(--coral);
  font-weight: 600;
}

.login-security {
  margin-top: 18px;
  text-align: center;
}

/* Controls */
.primary-button,
.ghost-button,
.danger-button,
.icon-button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  padding: 0 14px;
  font-size: 14px;
  font-weight: 700;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.primary-button {
  color: var(--text-primary);
  background: var(--brand-strong);
}

.primary-button:hover {
  background: #6737c4;
}

.ghost-button,
.icon-button {
  border-color: var(--line-strong);
  color: var(--text-primary);
  background: var(--panel-raised);
}

.ghost-button:hover,
.icon-button:hover {
  border-color: var(--accent-purple);
  background: var(--brand-soft);
}

.danger-button {
  color: var(--app-bg);
  background: var(--accent-coral);
}

.danger-button:hover {
  background: #ff8291;
}

.primary-button:active,
.ghost-button:active,
.danger-button:active,
.icon-button:active {
  transform: translateY(1px);
}

.compact {
  min-height: 32px;
  padding: 0 11px;
  font-size: 13px;
}

.pill-button {
  display: inline-flex;
}

.button-arrow {
  font-size: 15px;
}

.mobile-menu-button {
  display: none;
}

/* Desktop application shell */
.desktop-app {
  height: 100vh;
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  grid-template-rows: var(--topbar-height) minmax(0, 1fr) var(--dock-height);
  background: var(--app-bg);
}

.app-topbar {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) auto;
  align-items: center;
  min-height: var(--topbar-height);
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-primary);
  background: var(--frame-bg);
}

.brand {
  height: 100%;
  padding: 0 18px;
}

.brand-mark {
  color: var(--text-primary);
  background: var(--accent-purple);
}

.brand > span:last-child,
.session-chip > span:last-child,
.dock-connection > span:last-child {
  display: grid;
  min-width: 0;
}

.brand strong {
  font-size: 14px;
  white-space: nowrap;
}

.brand small,
.session-chip small {
  color: var(--text-secondary);
  font-size: 10px;
}

.topbar-center {
  min-width: 0;
  padding-left: 22px;
}

.topbar-center h1 {
  margin: 0;
  font-size: 18px;
  line-height: 1.25;
}

.topbar-center p {
  margin: 2px 0 0;
  overflow: hidden;
  color: var(--text-secondary);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 16px;
}

.session-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 112px;
}

.session-chip strong {
  font-size: 12px;
}

.app-topbar .ghost-button {
  border-color: var(--line-strong);
  color: var(--text-primary);
  background: var(--panel-raised);
}

.app-topbar .ghost-button:hover {
  background: var(--brand-soft);
}

.app-sidebar {
  grid-column: 1;
  grid-row: 2;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--frame-bg);
}

.nav-shell {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  padding: 16px 10px 12px;
}

.nav-group {
  margin-bottom: 14px;
}

.nav-group-title {
  margin: 0 10px 6px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
}

.nav-list {
  display: grid;
  gap: 2px;
}

.nav-item {
  position: relative;
  width: 100%;
  min-height: 38px;
  display: grid;
  grid-template-columns: 31px 1fr;
  align-items: center;
  border: 0;
  border-radius: var(--radius-control);
  padding: 0 10px;
  color: var(--text-secondary);
  background: transparent;
  text-align: left;
  font-size: 14px;
}

.nav-item::before {
  content: "";
  position: absolute;
  left: 0;
  width: 3px;
  height: 18px;
  border-radius: 0 2px 2px 0;
  background: transparent;
}

.nav-item:hover {
  color: var(--ink);
  background: var(--panel-raised);
}

.nav-item.active {
  color: var(--text-primary);
  background: #354b90;
  font-weight: 700;
}

.nav-item.active::before {
  background: var(--accent-coral);
}

.nav-index {
  color: var(--analysis-muted);
  font: 600 11px/1 var(--font-mono);
}

.nav-item.active .nav-index {
  color: var(--text-primary);
}

.connection-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 9px;
  min-height: 58px;
  margin: 10px;
  border: 1px solid var(--analysis-line);
  border-radius: var(--radius-panel);
  padding: 10px 11px;
  color: var(--text-primary);
  background: var(--analysis);
}

.connection-card > div {
  display: grid;
  min-width: 0;
}

.connection-card strong {
  font-size: 12px;
}

.connection-card small {
  overflow: hidden;
  color: var(--analysis-muted);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.connection-arrow {
  color: var(--mint);
}

.app-workspace {
  grid-column: 2;
  grid-row: 2;
  min-width: 0;
  min-height: 0;
  overflow: auto;
  padding: 20px 22px 24px;
  background: var(--app-bg);
}

.view {
  display: none;
  max-width: 1680px;
  min-height: 100%;
  margin: 0 auto;
  scroll-margin-top: 72px;
}

.view.active {
  display: block;
}

.workspace-heading {
  align-items: center;
  margin-bottom: 15px;
}

.workspace-heading h2 {
  margin: 5px 0 0;
  font-size: 20px;
  line-height: 1.3;
}

.view-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.25;
}

.panel h3,
.dark-panel h3 {
  margin: 5px 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
}

.panel p,
.panel label,
.sensor-row {
  font-size: 15px;
  line-height: 1.5;
}

.chart-label,
.helper-text,
.panel small {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
}

.workspace-heading p:last-child,
.panel-header > div > p:not(.section-kicker):not(.eyebrow) {
  margin: 4px 0 0;
  color: var(--muted);
}

.workspace-heading p:last-child {
  font-size: 13px;
}

.panel-header > div > p:not(.section-kicker):not(.eyebrow) {
  font-size: 15px;
  line-height: 1.5;
}

.panel,
.metric-card,
.analytics-card,
.shell,
.gallery-shell {
  min-width: 0;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-panel);
  background: var(--panel-bg);
  box-shadow: var(--shadow-panel);
}

.core {
  min-width: 0;
}

.panel-core,
.gallery-core {
  padding: 20px;
}

.panel-header {
  margin-bottom: 16px;
}

/* Monitor */
.monitor-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.8fr);
  gap: 16px;
  min-height: calc(100vh - var(--topbar-height) - var(--dock-height) - 44px);
}

.monitor-main {
  min-width: 0;
}

.overview-analytics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.analytics-wide {
  grid-column: span 2;
}

.analytics-card {
  min-height: 300px;
  padding: 16px;
  overflow: hidden;
}

.analytics-card header {
  min-height: 48px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.analytics-card header > * {
  min-width: 0;
}

.analytics-card h3 {
  margin: 0;
  font-size: 16px;
  line-height: 1.35;
}

.analytics-card p {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
}

.analytics-card canvas {
  display: block;
  width: 100%;
  height: 220px;
}

.chart-window,
.chart-legend {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
  white-space: nowrap;
}

.chart-legend {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.chart-legend i {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.legend-raw {
  background: var(--accent-purple);
}

.legend-filtered {
  margin-left: 4px;
  background: var(--accent-coral);
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 14px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-panel);
  background: var(--panel-bg);
}

.summary-strip span {
  display: grid;
  gap: 5px;
  min-height: 72px;
  align-content: center;
  padding: 12px 16px;
  border-right: 1px solid var(--line);
}

.summary-strip span:last-child {
  border-right: 0;
}

.summary-strip small,
.dock-stat small,
.dock-progress-label small {
  color: var(--muted);
  font-size: 11px;
}

.summary-strip strong {
  font-size: 21px;
}

.sensor-list-panel {
  overflow: hidden;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-panel);
  background: var(--panel-bg);
  box-shadow: var(--shadow-panel);
}

.sensor-list-head,
.sensor-row {
  display: grid;
  grid-template-columns: 52px minmax(190px, 1.35fr) minmax(130px, 0.9fr) minmax(130px, 0.8fr) 42px;
  align-items: center;
}

.sensor-list-head {
  min-height: 40px;
  padding: 0 14px;
  color: var(--text-secondary);
  background: var(--panel-raised);
  font-size: 11px;
  font-weight: 700;
}

.sensor-list {
  display: grid;
}

.sensor-row {
  position: relative;
  width: 100%;
  min-height: 74px;
  border: 0;
  border-top: 1px solid var(--border-soft);
  padding: 0 14px;
  color: var(--ink);
  background: var(--panel-bg);
  text-align: left;
}

.sensor-row:hover {
  background: var(--panel-raised);
}

.sensor-row.active {
  background: var(--brand-pale);
}

.sensor-row.active::before {
  content: "";
  position: absolute;
  inset: 12px auto 12px 0;
  width: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--brand);
}

.sensor-order {
  color: var(--analysis-muted);
  font: 600 12px/1 var(--font-mono);
}

.sensor-identity {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.sensor-identity > i {
  width: 36px;
  height: 36px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-control);
  color: var(--text-primary);
  background: var(--sensor-color, var(--brand));
  font: 700 10px/1 var(--font-mono);
  font-style: normal;
}

.sensor-identity > span,
.sensor-reading,
.sensor-quality {
  display: grid;
  min-width: 0;
}

.sensor-identity strong {
  overflow: hidden;
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sensor-identity small,
.sensor-reading small {
  color: var(--muted);
  font-size: 11px;
}

.sensor-reading {
  grid-template-columns: auto auto;
  align-items: baseline;
  justify-content: start;
  gap: 5px;
}

.sensor-reading strong {
  font: 700 24px/1 var(--font-sans);
}

.sensor-quality {
  grid-template-columns: 8px auto;
  align-items: center;
  gap: 8px;
  color: var(--accent-lime);
  font-size: 12px;
}

.sensor-quality i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #45ae7e;
}

.sensor-action {
  color: var(--text-secondary);
  font-size: 24px;
  text-align: right;
}

.dark-panel {
  min-width: 0;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-panel);
  padding: 20px;
  color: var(--text-primary);
  background: var(--analysis);
  box-shadow: var(--shadow-panel);
}

.dark-panel .panel-header {
  margin-bottom: 12px;
}

.dark-segmented {
  justify-content: flex-start;
  margin-bottom: 12px;
}

.monitor-analysis .segmented {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.monitor-analysis .segmented button {
  width: 100%;
  padding: 0 6px;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 5px;
}

.segmented button {
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  padding: 0 10px;
  color: var(--text-secondary);
  background: var(--panel-raised);
  font-size: 12px;
}

.segmented button.active {
  border-color: var(--brand-strong);
  color: var(--text-primary);
  background: var(--brand-strong);
}

.dark-segmented button {
  border-color: var(--analysis-line);
  color: var(--analysis-muted);
  background: var(--analysis-raised);
}

.dark-segmented button.active {
  border-color: var(--accent-blue);
  color: var(--app-bg);
  background: var(--accent-blue);
}

canvas {
  display: block;
  width: 100%;
  height: 310px;
  border-radius: var(--radius-control);
  background: var(--analysis);
}

.monitor-analysis canvas {
  height: 330px;
  background: var(--analysis-raised);
}

#largeTrendCanvas {
  height: 510px;
}

#filterCanvas {
  height: 410px;
}

.analysis-caption {
  display: flex;
  justify-content: space-between;
  margin: 18px 0 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 700;
}

.analysis-caption small {
  color: var(--analysis-muted);
  font-size: 10px;
  font-weight: 400;
}

.event-list {
  display: grid;
  gap: 7px;
}

.event-list div {
  min-height: 40px;
  display: flex;
  align-items: center;
  border-left: 3px solid var(--brand);
  border-radius: var(--radius-control);
  padding: 8px 11px;
  color: var(--text-secondary);
  background: var(--panel-raised);
  font-size: 12px;
}

.dark-panel .event-list div {
  border-left-color: var(--mint);
  color: var(--text-secondary);
  background: var(--analysis-raised);
}

/* Data views */
.full-height {
  min-height: calc(100vh - var(--topbar-height) - var(--dock-height) - 44px);
}

.algorithm-grid,
.settings-grid,
.teaching-grid,
.diagnostics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.algorithm-grid {
  grid-template-columns: minmax(0, 1.4fr) minmax(340px, 0.75fr);
}

.wide {
  grid-column: 1 / -1;
}

.algorithm-workbench {
  grid-column: 1;
}

.algorithm-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.algorithm-actions,
.tool-row,
.top-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
}

.algorithm-actions {
  margin-bottom: 14px;
}

.tool-row {
  margin-top: 15px;
}

.tool-row > label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.tool-row input[type="range"] {
  accent-color: var(--brand);
}

.analysis-grid,
.metric-list,
.address-list,
.diagnostic-list,
.diagnostic-stats {
  display: grid;
  gap: 9px;
}

.analysis-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 14px;
}

.analysis-grid > div,
.metric-list > div,
.diagnostic-stats > span {
  display: grid;
  gap: 6px;
  align-content: center;
  min-height: 72px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  padding: 11px 12px;
  background: var(--surface-subtle);
}

.analysis-grid span,
.metric-list span,
.diagnostic-stats small {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.analysis-grid strong,
.metric-list strong,
.diagnostic-stats strong {
  font-size: 20px;
}

.fusion-score {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding: 4px 0 17px;
}

.fusion-score > div:first-child {
  display: grid;
  gap: 6px;
}

.fusion-score strong {
  font-size: 42px;
}

.fusion-score-ring {
  --score: 0deg;
  position: relative;
  width: 96px;
  height: 96px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: conic-gradient(var(--brand) var(--score), var(--frame-bg) 0);
}

.fusion-score-ring::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  background: var(--surface);
}

.fusion-score-ring span {
  position: relative;
  z-index: 1;
  color: var(--muted);
}

.fusion-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 14px 0;
}

.fusion-summary span {
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  padding: 10px;
  color: var(--muted);
  font-size: 11px;
}

.fusion-summary strong {
  color: var(--ink);
  font-size: 17px;
}

.fusion-weights,
.fusion-contributions {
  display: grid;
  gap: 10px;
}

.fusion-weight {
  display: grid;
  gap: 6px;
}

.fusion-weight > span {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}

.fusion-weight input {
  width: 100%;
  accent-color: var(--brand);
}

.fusion-contribution {
  display: grid;
  grid-template-columns: 72px 1fr 42px;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
}

.fusion-contribution > div {
  height: 6px;
  overflow: hidden;
  border-radius: 3px;
  background: var(--frame-bg);
}

.fusion-contribution i {
  display: block;
  height: 100%;
  background: var(--brand);
}

.ai-output {
  display: grid;
  gap: 8px;
}

.ai-output p {
  min-height: 45px;
  display: flex;
  align-items: center;
  margin: 0;
  border-radius: var(--radius-control);
  padding: 10px 12px;
  color: var(--text-secondary);
  background: var(--analysis-raised);
  font-size: 12px;
}

.ai-output p:first-child {
  border-left: 3px solid var(--mint);
  color: var(--text-primary);
  font-weight: 700;
}

.full-button {
  width: 100%;
  margin-top: 12px;
}

pre {
  max-height: 340px;
  overflow: auto;
  margin: 0;
  border: 1px solid var(--analysis-line);
  border-radius: var(--radius-control);
  padding: 15px;
  color: var(--text-secondary);
  background: var(--analysis);
  font: 12px/1.65 var(--font-mono);
  white-space: pre-wrap;
}

/* Records */
.upload-status {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  margin-bottom: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  padding: 9px 11px;
  color: var(--muted);
  background: var(--surface-subtle);
  font-size: 12px;
}

.upload-status.success {
  color: var(--accent-lime);
  background: rgba(155, 232, 61, 0.14);
}

.upload-status.error {
  color: var(--accent-coral);
  background: rgba(255, 104, 124, 0.14);
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
}

table {
  width: 100%;
  min-width: 850px;
  border-collapse: collapse;
  background: var(--surface);
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 12px 13px;
  text-align: left;
  white-space: nowrap;
  font-size: 13px;
}

th {
  color: var(--text-secondary);
  background: var(--panel-raised);
  font-size: 11px;
}

tbody tr:hover {
  background: var(--brand-pale);
}

tbody tr:last-child td {
  border-bottom: 0;
}

/* Teaching and diagnostics */
.task-title {
  display: grid;
  gap: 5px;
  border-left: 3px solid var(--brand);
  border-radius: var(--radius-control);
  padding: 14px 15px;
  background: var(--brand-pale);
}

.task-title strong {
  font-size: 17px;
}

.task-title span,
.helper-text {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 16px 0;
}

.flow-step {
  display: grid;
  gap: 6px;
  min-height: 68px;
  align-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  padding: 10px;
  color: var(--muted);
  background: var(--surface-subtle);
}

.flow-step span {
  font: 600 10px/1 var(--font-mono);
}

.flow-step strong {
  font-size: 12px;
}

.flow-step.active {
  border-color: var(--accent-purple);
  color: var(--text-primary);
  background: var(--brand-soft);
}

.helper-text {
  margin: 12px 0 0;
}

.diagnostic-list > div {
  min-height: 54px;
  display: grid;
  grid-template-columns: 100px 1fr auto;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 8px 4px;
}

.diagnostic-list > div:last-child {
  border-bottom: 0;
}

.diagnostic-list span,
.diagnostic-list em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.online-text {
  color: var(--accent-lime) !important;
}

.warn-text {
  color: var(--warning) !important;
}

.diagnostic-stats {
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 12px;
}

.address-list {
  margin-top: 12px;
}

.address-list span {
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  padding: 10px 12px;
  color: var(--text-secondary);
  background: var(--surface-subtle);
  font: 12px/1.35 var(--font-mono);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.gallery-card {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background: var(--surface);
}

.gallery-image-button {
  position: relative;
  width: 100%;
  display: block;
  overflow: hidden;
  border: 0;
  padding: 0;
  background: var(--frame-bg);
}

.gallery-image-button img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 220ms ease;
}

.gallery-image-button:hover img {
  transform: scale(1.025);
}

.gallery-expand {
  position: absolute;
  right: 10px;
  bottom: 10px;
  border-radius: var(--radius-label);
  padding: 5px 8px;
  color: var(--text-primary);
  background: rgba(17, 25, 59, 0.82);
  font-size: 11px;
}

.gallery-card figcaption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 13px;
}

.gallery-card figcaption span,
.gallery-note {
  color: var(--muted);
  font-size: 12px;
}

.gallery-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 40px;
  background: rgba(5, 10, 37, 0.9);
}

.image-lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  border-radius: var(--radius-panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 22px;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  font-size: 24px;
}

body.lightbox-open {
  overflow: hidden;
}

/* Fixed experiment control dock */
.experiment-dock {
  grid-column: 1 / -1;
  grid-row: 3;
  display: grid;
  grid-template-columns: auto minmax(230px, 1fr) repeat(3, minmax(110px, auto)) minmax(215px, auto);
  align-items: center;
  gap: 16px;
  min-height: var(--dock-height);
  border-top: 1px solid var(--line-strong);
  padding: 9px 16px;
  background: var(--frame-bg);
  box-shadow: 0 -8px 22px rgba(5, 10, 37, 0.2);
}

.dock-primary-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-button {
  width: 40px;
  padding: 0;
}

.pause-icon {
  position: relative;
  display: block;
  width: 14px;
  height: 15px;
}

.pause-icon::before,
.pause-icon::after {
  content: "";
  position: absolute;
  top: 1px;
  width: 4px;
  height: 13px;
  border-radius: 1px;
  background: currentColor;
}

.pause-icon::before {
  left: 1px;
}

.pause-icon::after {
  right: 1px;
}

.icon-button.active .pause-icon::before {
  width: 0;
  height: 0;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 11px solid currentColor;
  background: transparent;
}

.icon-button.active .pause-icon::after {
  display: none;
}

.dock-progress {
  min-width: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
}

.dock-progress-label {
  display: grid;
  white-space: nowrap;
}

.dock-progress-label strong,
.dock-stat strong,
.dock-connection strong {
  font-size: 12px;
}

.progress-track {
  height: 5px;
  overflow: hidden;
  border-radius: 3px;
  background: var(--panel-raised);
}

.progress-track i {
  display: block;
  width: 72%;
  height: 100%;
  background: var(--brand);
  animation: sample-progress 3.2s ease-in-out infinite alternate;
}

@keyframes sample-progress {
  from { width: 34%; }
  to { width: 94%; }
}

.dock-stat {
  display: grid;
  min-width: 100px;
  border-left: 1px solid var(--line);
  padding-left: 14px;
}

.dock-connection {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 215px;
  border-left: 1px solid var(--line);
  padding-left: 14px;
}

.dock-connection small {
  color: var(--muted);
  font-size: 10px;
}

.mobile-nav-backdrop,
.mobile-bottom-nav {
  display: none;
}

@media (max-width: 1023px) {
  .desktop-app {
    --sidebar-width: 188px;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  }

  .monitor-layout,
  .algorithm-grid,
  .teaching-grid,
  .diagnostics-grid,
  .settings-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .monitor-layout {
    min-height: auto;
  }

  .overview-analytics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .analytics-wide {
    grid-column: span 2;
  }

  .experiment-dock {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .experiment-dock .dock-stat,
  .experiment-dock .dock-connection {
    display: none;
  }
}

@media (max-width: 767px) {
  body {
    padding-bottom: calc(64px + env(safe-area-inset-bottom));
    overflow-x: hidden;
    -webkit-tap-highlight-color: rgba(78, 140, 255, 0.18);
  }

  .login-screen {
    grid-template-columns: minmax(0, 1fr);
  }

  .login-brand-pane {
    min-height: auto;
    grid-template-rows: auto;
    padding: 20px;
  }

  .login-intro,
  .login-device-summary,
  .login-copyright {
    display: none;
  }

  .login-form-pane {
    min-height: calc(100vh - 78px);
    padding: 24px 16px 32px;
  }

  .login-panel {
    max-width: 520px;
    padding: 22px;
  }

  .login-panel-head {
    align-items: center;
  }

  .login-panel-head h2 {
    font-size: 23px;
  }

  .desktop-app {
    height: auto;
    min-height: 100vh;
    display: block;
  }

  .app-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    grid-template-columns: 44px minmax(0, 1fr) auto;
    min-height: 58px;
    padding: 0 10px;
  }

  .mobile-menu-button {
    display: inline-grid;
  }

  .app-topbar .brand,
  .session-chip {
    display: none;
  }

  .topbar-center {
    padding: 0 10px;
  }

  .topbar-center h1 {
    overflow: hidden;
    font-size: 17px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .topbar-center p {
    display: none;
  }

  .session-actions {
    padding-right: 0;
  }

  .app-sidebar {
    position: fixed;
    inset: 58px auto calc(64px + env(safe-area-inset-bottom)) 0;
    z-index: 40;
    width: min(86vw, 304px);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(-105%);
    transition: transform 180ms ease;
    box-shadow: 18px 0 36px rgba(5, 10, 37, 0.38);
  }

  .mobile-nav-open .app-sidebar {
    transform: translateX(0);
  }

  .app-sidebar .teacher-only {
    display: none;
  }

  .mobile-nav-backdrop {
    position: fixed;
    inset: 58px 0 calc(64px + env(safe-area-inset-bottom));
    z-index: 35;
    width: 100%;
    border: 0;
    padding: 0;
    background: rgba(5, 10, 37, 0.64);
  }

  .mobile-nav-open .mobile-nav-backdrop {
    display: block;
  }

  .app-workspace {
    min-height: calc(100vh - 58px);
    padding: 14px 14px calc(24px + env(safe-area-inset-bottom));
    overflow: visible;
  }

  .experiment-dock {
    display: none;
  }

  .mobile-bottom-nav {
    position: fixed;
    inset: auto 0 0;
    z-index: 50;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    min-height: calc(64px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid var(--border-soft);
    background: #172249;
    box-shadow: 0 -10px 24px rgba(5, 10, 37, 0.3);
  }

  .mobile-bottom-nav button {
    position: relative;
    min-width: 0;
    min-height: 64px;
    border: 0;
    padding: 7px 2px 5px;
    color: var(--text-secondary);
    background: transparent;
    font-family: var(--font-ui);
  }

  .mobile-bottom-nav button::before {
    content: "";
    position: absolute;
    inset: 0 24% auto;
    height: 3px;
    border-radius: 0 0 3px 3px;
    background: transparent;
  }

  .mobile-bottom-nav button.active {
    color: var(--text-primary);
    background: #202d5d;
  }

  .mobile-bottom-nav button.active::before {
    background: var(--accent-blue);
  }

  .mobile-bottom-nav span,
  .mobile-bottom-nav b {
    display: block;
  }

  .mobile-bottom-nav span {
    margin-bottom: 4px;
    color: var(--accent-blue);
    font: 700 10px/1 var(--font-mono);
  }

  .mobile-bottom-nav b {
    font-size: 13px;
    line-height: 1.2;
  }

  .workspace-heading,
  .panel-header,
  .analytics-card header {
    flex-wrap: wrap;
  }

  .workspace-heading {
    align-items: flex-start;
  }

  .workspace-heading h2,
  .view-title {
    font-size: 22px;
  }

  .summary-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .summary-strip span {
    border-bottom: 1px solid var(--line);
  }

  .summary-strip span:nth-child(2) {
    border-right: 0;
  }

  .summary-strip span:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .summary-strip small {
    font-size: 12px;
  }

  .summary-strip strong {
    font-size: 24px;
  }

  .sensor-list-head {
    display: none;
  }

  .sensor-row {
    grid-template-columns: 34px minmax(0, 1fr) auto 20px;
    min-height: 78px;
    padding: 0 12px;
  }

  .sensor-quality {
    display: none;
  }

  .sensor-identity > i {
    width: 34px;
    height: 34px;
  }

  .sensor-reading strong {
    font-size: 22px;
  }

  .monitor-analysis,
  .panel-core {
    padding: 16px;
  }

  .monitor-analysis canvas {
    height: 250px;
  }

  .monitor-analysis .segmented button {
    min-height: 36px;
    font-size: 13px;
  }

  .overview-analytics,
  .metrics-grid,
  .analysis-grid,
  .filter-metrics,
  .algorithm-controls {
    grid-template-columns: minmax(0, 1fr);
  }

  .analytics-wide {
    grid-column: auto;
  }

  .analytics-card {
    min-height: 280px;
  }

  .analytics-card canvas {
    height: 210px;
  }

  .chart-window,
  .chart-legend {
    white-space: normal;
  }

  .algorithm-actions,
  .top-actions,
  .tool-row,
  .teaching-actions {
    display: flex;
    flex-wrap: wrap;
  }

  .algorithm-actions > *,
  .top-actions > *,
  .teaching-actions > * {
    flex: 1 1 140px;
  }

  .diagnostic-stats,
  .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .table-wrap {
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
  }

  pre {
    max-width: 100%;
    overflow: auto;
  }

  .image-lightbox {
    padding: 18px;
    overscroll-behavior: contain;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}