:root {
  color-scheme: dark;
  --bg: #101416;
  --panel: #182023;
  --panel-soft: #20292c;
  --text: #f1f6f4;
  --muted: #9fb0aa;
  --line: rgba(255, 255, 255, 0.13);
  --accent: #f6c45a;
  --accent-strong: #ffdd7a;
  --water: #1d5164;
  --land: #5f8f65;
  --land-lit: #8fb56d;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(246, 196, 90, 0.16), transparent 32rem),
    linear-gradient(135deg, #101416 0%, #152023 48%, #121819 100%);
  color: var(--text);
}

body.is-map-fullscreen {
  overflow: hidden;
}

button,
input,
select {
  font: inherit;
  max-width: 100%;
}

.app-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 10px 0 20px;
}

.app-shell:fullscreen,
.app-shell:-webkit-full-screen {
  --fullscreen-edge: 16px;
  --fullscreen-panel-width: 320px;
  --fullscreen-panel-gap: 18px;
  --fullscreen-panel-max-height: calc(100vh - 32px);
  --fullscreen-toolbar-reserve: 392px;
  position: relative;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #071015;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 6px 0 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 250px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1 1 auto;
  flex-wrap: wrap;
}

.site-nav a,
.site-footer a,
.legal-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a {
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 800;
}

.site-nav a:hover,
.site-footer a:hover,
.legal-nav a:hover {
  color: var(--text);
}

.site-nav a:hover {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 50%;
  background:
    radial-gradient(circle at 33% 31%, #fff4bf 0 12%, #ffcf59 13% 31%, transparent 32%),
    linear-gradient(135deg, #2b7f94, #27464e);
  box-shadow: 0 0 28px rgba(246, 196, 90, 0.28);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.25rem, 2vw, 1.72rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.brand p,
.object-card p,
.label {
  color: var(--muted);
}

.brand p {
  margin-top: 2px;
  font-size: 0.86rem;
  line-height: 1.22;
}

.controls {
  display: flex;
  align-items: end;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.mobile-panel-summary {
  display: none;
}

.controls > * {
  min-width: 0;
}

.icon-button,
.text-button,
.apply-button,
input,
select {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(24, 32, 35, 0.92);
}

.icon-button,
.text-button,
.apply-button {
  padding: 0 16px;
  cursor: pointer;
}

.icon-button {
  min-width: 76px;
  color: #151100;
  background: var(--accent);
  border-color: rgba(255, 239, 179, 0.6);
  font-weight: 700;
}

.icon-button:hover,
.text-button:hover,
.apply-button:hover {
  filter: brightness(1.08);
}

.apply-button {
  align-self: end;
}

.apply-button.is-ready {
  color: #151100;
  background: var(--accent-strong);
  border-color: rgba(255, 239, 179, 0.72);
  font-weight: 700;
}

.time-control,
.speed-control,
.path-control,
.unit-control {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.path-control {
  min-height: 36px;
  align-items: center;
  grid-auto-flow: column;
  justify-content: start;
  gap: 9px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.68);
  color: var(--text);
  cursor: pointer;
}

.map-path-control {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 8;
  margin: 0;
  background: rgba(8, 13, 15, 0.72);
  backdrop-filter: blur(10px);
}

.app-shell:fullscreen .map-path-control,
.app-shell:-webkit-full-screen .map-path-control {
  top: 22px;
  right: calc(var(--fullscreen-panel-width) + 42px);
}

.app-shell.is-mobile-fullscreen .map-path-control {
  top: 10px;
  right: 10px;
  min-height: 34px;
  padding: 0 10px;
  font-size: 0.78rem;
}

.path-control input {
  width: 16px;
  height: 16px;
  min-height: 0;
  accent-color: var(--accent);
}

.unit-control select {
  min-width: 110px;
}

input,
select {
  width: 100%;
  padding: 0 12px;
}

.map-intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 6px;
}

.map-intro h2 {
  font-size: 0.92rem;
  line-height: 1.2;
}

.map-intro p {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.map-tools-row {
  display: grid;
  grid-template-columns: minmax(520px, 1fr) minmax(178px, 220px) minmax(160px, 200px);
  align-items: stretch;
  gap: 8px;
  margin-bottom: 8px;
}

.map-stage {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #132327;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.32);
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.app-shell:fullscreen .map-stage {
  display: grid;
  position: absolute;
  inset: 0;
  place-items: center;
  border: 0;
  border-radius: 0;
  background: #071015;
  box-shadow: none;
}

.app-shell:-webkit-full-screen .map-stage {
  display: grid;
  position: absolute;
  inset: 0;
  place-items: center;
  border: 0;
  border-radius: 0;
  background: #071015;
  box-shadow: none;
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
}

.app-shell:fullscreen .map-stage canvas {
  width: min(100vw, 200vh);
  max-height: 100vh;
}

.app-shell:-webkit-full-screen .map-stage canvas {
  width: min(100vw, 200vh);
  max-height: 100vh;
}

.map-fullscreen-button {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 8;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: var(--text);
  background: rgba(8, 13, 15, 0.72);
  backdrop-filter: blur(10px);
  cursor: pointer;
}

.map-fullscreen-button[hidden] {
  display: none;
}

.map-fullscreen-button:hover {
  background: rgba(20, 29, 32, 0.86);
  filter: brightness(1.08);
}

.app-shell:fullscreen .map-fullscreen-button,
.app-shell:-webkit-full-screen .map-fullscreen-button {
  right: 22px;
  bottom: 22px;
}

.fullscreen-icon {
  position: relative;
  display: block;
  width: 22px;
  height: 22px;
}

.fullscreen-corner {
  position: absolute;
  width: 8px;
  height: 8px;
  border-color: currentColor;
  transition: transform 0.16s ease, inset 0.16s ease;
}

.fullscreen-corner.top-left {
  top: 1px;
  left: 1px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.fullscreen-corner.top-right {
  top: 1px;
  right: 1px;
  border-top: 2px solid;
  border-right: 2px solid;
}

.fullscreen-corner.bottom-left {
  bottom: 1px;
  left: 1px;
  border-bottom: 2px solid;
  border-left: 2px solid;
}

.fullscreen-corner.bottom-right {
  right: 1px;
  bottom: 1px;
  border-right: 2px solid;
  border-bottom: 2px solid;
}

.map-fullscreen-button.is-active .fullscreen-corner.top-left {
  transform: translate(5px, 5px) rotate(180deg);
}

.map-fullscreen-button.is-active .fullscreen-corner.top-right {
  transform: translate(-5px, 5px) rotate(-180deg);
}

.map-fullscreen-button.is-active .fullscreen-corner.bottom-left {
  transform: translate(5px, -5px) rotate(-180deg);
}

.map-fullscreen-button.is-active .fullscreen-corner.bottom-right {
  transform: translate(-5px, -5px) rotate(180deg);
}

.marker-tooltip {
  position: absolute;
  left: var(--tooltip-x, 50%);
  top: var(--tooltip-y, 50%);
  z-index: 9;
  max-width: min(320px, calc(100% - 32px));
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: var(--text);
  background: rgba(8, 13, 15, 0.82);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  font-size: 0.8rem;
  font-weight: 750;
  line-height: 1.3;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 14px));
}

.marker-tooltip[hidden] {
  display: none;
}

#earthMap {
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

#earthMap.is-dragging {
  cursor: grabbing;
}

.readout {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(8, 13, 15, 0.48);
  -webkit-user-select: none;
  user-select: none;
}

.readout > div {
  min-width: 180px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(12, 18, 19, 0.72);
  backdrop-filter: blur(10px);
}

.app-shell:fullscreen .readout,
.app-shell:-webkit-full-screen .readout,
.app-shell.is-mobile-fullscreen .readout {
  position: absolute;
  left: 16px;
  bottom: 16px;
  z-index: 8;
  margin-top: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.label {
  display: block;
  margin-bottom: 3px;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.readout strong {
  display: block;
  font-size: 0.94rem;
  font-weight: 700;
}

.alignment-panel {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.68);
}

.map-tools-row .alignment-panel,
.map-tools-row .visibility-panel,
.map-tools-row .map-location-panel {
  margin: 0;
}

.map-tools-row .alignment-panel,
.map-tools-row .visibility-panel {
  align-content: start;
  padding: 9px 12px;
}

.map-tools-row .alignment-panel[open],
.map-tools-row .visibility-panel[open] {
  grid-column: 1 / -1;
}

.map-tools-row .alignment-head p,
.map-tools-row .visibility-head p {
  display: none;
}

.map-tools-row .alignment-head h2,
.map-tools-row .visibility-head h2 {
  font-size: 0.84rem;
  white-space: nowrap;
}

.map-tools-row .alignment-summary,
.map-tools-row .visibility-summary {
  min-height: 44px;
}

.alignment-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.alignment-summary::-webkit-details-marker {
  display: none;
}

.alignment-body {
  display: grid;
  gap: 12px;
}

.alignment-head h2 {
  font-size: 1rem;
  line-height: 1.2;
}

.alignment-head p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.alignment-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  align-items: end;
  gap: 10px;
}

.alignment-controls label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

.alignment-actions {
  display: flex;
  gap: 8px;
}

.alignment-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  line-height: 1.45;
}

.alignment-result strong {
  display: block;
  color: var(--text);
}

.alignment-result p {
  margin-top: 3px;
  font-size: 0.86rem;
}

.alignment-result .muted-note {
  color: rgba(166, 184, 178, 0.86);
  font-size: 0.78rem;
}

.visibility-panel {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.62);
}

.visibility-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.visibility-summary::-webkit-details-marker {
  display: none;
}

.visibility-panel:not([open]) .toggle-indicator {
  transform: rotate(-45deg);
}

.visibility-body {
  display: grid;
  gap: 12px;
}

.visibility-head h2 {
  font-size: 1rem;
  line-height: 1.2;
}

.visibility-head p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.visibility-controls {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  align-items: end;
  gap: 10px;
}

.visibility-controls label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

.visibility-actions {
  display: flex;
  gap: 8px;
}

.visibility-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  line-height: 1.45;
}

.visibility-result strong {
  display: block;
  color: var(--text);
}

.visibility-result p {
  margin-top: 3px;
  font-size: 0.86rem;
}

.alignment-visual-canvas {
  display: block;
  width: 150px;
  height: 74px;
  flex: 0 0 150px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(8, 13, 15, 0.72);
}

.observer-location {
  display: grid;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
}

.map-location-panel {
  grid-template-columns: 1fr;
  align-items: end;
  margin-bottom: 8px;
  padding: 9px 12px;
  min-width: 0;
  overflow: hidden;
}

.map-location-panel .observer-location-status {
  grid-column: 1 / -1;
}

.observer-location h3 {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.2;
}

.observer-location p,
.observer-location-status,
.local-visibility {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.observer-location p {
  display: none;
  margin-top: 2px;
}

.observer-location-head {
  display: block;
}

.observer-location-controls {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(96px, 116px) minmax(190px, 230px);
  align-items: end;
  gap: 6px;
  min-width: 0;
}

.observer-location-controls > label:first-child {
  min-width: 0;
}

.observer-location-controls .text-button {
  white-space: nowrap;
}

.observer-location-controls label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.observer-location-status {
  min-height: 1.2em;
  margin-top: 6px;
  font-size: 0.78rem;
  min-width: 0;
  overflow: hidden;
}

.observer-status-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 8px;
  align-items: center;
  min-height: 50px;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 8px;
  background: rgba(8, 13, 15, 0.25);
}

.observer-status-location,
.observer-light-summary {
  min-width: 0;
}

.observer-status-location {
  display: grid;
  gap: 2px;
}

.observer-status-location strong,
.observer-light-summary strong {
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.15;
}

.observer-status-location span,
.observer-light-summary span {
  color: var(--muted);
}

.observer-status-grid .label {
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
}

.observer-light-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  padding-inline: 8px;
  border-inline: 1px solid rgba(255, 255, 255, 0.1);
}

.observer-light-summary > div {
  display: grid;
  gap: 2px;
}

.observer-light-summary > div span:last-child,
.observer-status-location span:not(.label) {
  overflow: hidden;
  text-overflow: ellipsis;
}

.observer-light-summary > div span:last-child {
  white-space: nowrap;
}

.light-meter {
  display: grid;
  grid-template-columns: repeat(4, 10px);
  align-items: end;
  gap: 3px;
  height: 23px;
}

.light-meter span {
  display: block;
  width: 10px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.12);
}

.light-meter span:nth-child(1) {
  height: 10px;
}

.light-meter span:nth-child(2) {
  height: 14px;
}

.light-meter span:nth-child(3) {
  height: 19px;
}

.light-meter span:nth-child(4) {
  height: 24px;
}

.light-meter .is-filled {
  background: linear-gradient(180deg, #ffdd7a 0%, #ff9167 100%);
  box-shadow: 0 0 10px rgba(246, 196, 90, 0.26);
}

.light-meter[data-level="1"] .is-filled {
  background: linear-gradient(180deg, #8fe6ff 0%, #5799ff 100%);
}

.light-meter[data-level="2"] .is-filled {
  background: linear-gradient(180deg, #afea8f 0%, #6fbf6d 100%);
}

.sky-status-icon {
  position: relative;
  display: block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #ffd768;
  box-shadow: 0 0 18px rgba(255, 215, 104, 0.42);
}

.sky-status-icon::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: rgba(255, 248, 190, 0.72);
}

.sky-status-icon.is-twilight {
  overflow: hidden;
  background: linear-gradient(180deg, #ffcd73 0 48%, #5b91b2 49% 100%);
  box-shadow: 0 0 16px rgba(255, 172, 101, 0.35);
}

.sky-status-icon.is-twilight::before {
  inset: 9px 7px 7px;
  background: rgba(255, 239, 164, 0.86);
}

.observer-location-status a {
  color: var(--text);
  text-decoration-color: rgba(255, 255, 255, 0.42);
  text-underline-offset: 3px;
}

.local-visibility {
  margin-top: 5px;
}

.rare-events {
  display: grid;
  gap: 10px;
  padding-top: 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.rare-events-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
}

.rare-events-head h3 {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.2;
}

.rare-events-head p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.82rem;
}

.rare-events-head label {
  display: grid;
  gap: 6px;
  min-width: 150px;
  color: var(--muted);
  font-size: 0.78rem;
}

.rare-events-button {
  justify-self: start;
}

.rare-events-result {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.rare-event-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.rare-event-card > div {
  min-width: 0;
  flex: 1 1 auto;
}

.rare-event-card strong {
  display: block;
  color: var(--text);
  font-size: 0.92rem;
}

.rare-event-card p {
  margin-top: 3px;
  font-size: 0.8rem;
  line-height: 1.4;
}

.alignment-panel:not([open]) .toggle-indicator {
  transform: rotate(-45deg);
}

.app-shell:fullscreen .toolbar,
.app-shell:-webkit-full-screen .toolbar {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 10;
  display: block;
  width: min(720px, calc(100vw - var(--fullscreen-toolbar-reserve)));
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(8, 13, 15, 0.76);
  backdrop-filter: blur(12px);
}

.app-shell:fullscreen .brand,
.app-shell:-webkit-full-screen .brand {
  display: none;
}

.app-shell:fullscreen .controls,
.app-shell:-webkit-full-screen .controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.app-shell:fullscreen .time-control,
.app-shell:-webkit-full-screen .time-control {
  min-width: 238px;
}

.app-shell:fullscreen .map-intro,
.app-shell:-webkit-full-screen .map-intro {
  display: none;
}

.app-shell:fullscreen .map-tools-row,
.app-shell:-webkit-full-screen .map-tools-row,
.app-shell.is-mobile-fullscreen .map-tools-row {
  display: none;
}

.app-shell:fullscreen .alignment-panel,
.app-shell:-webkit-full-screen .alignment-panel,
.app-shell:fullscreen .visibility-panel,
.app-shell:-webkit-full-screen .visibility-panel {
  position: absolute;
  top: 132px;
  left: 16px;
  z-index: 10;
  width: min(720px, calc(100vw - var(--fullscreen-toolbar-reserve)));
  margin: 0;
  padding: 12px;
  background: rgba(8, 13, 15, 0.76);
  backdrop-filter: blur(12px);
}

.app-shell:fullscreen .alignment-panel:not([open]),
.app-shell:-webkit-full-screen .alignment-panel:not([open]),
.app-shell:fullscreen .visibility-panel:not([open]),
.app-shell:-webkit-full-screen .visibility-panel:not([open]) {
  width: min(360px, calc(100vw - var(--fullscreen-toolbar-reserve)));
}

.app-shell:fullscreen .alignment-summary,
.app-shell:-webkit-full-screen .alignment-summary,
.app-shell:fullscreen .visibility-summary,
.app-shell:-webkit-full-screen .visibility-summary {
  min-height: 28px;
}

.app-shell:fullscreen .alignment-head p,
.app-shell:-webkit-full-screen .alignment-head p,
.app-shell:fullscreen .visibility-head p,
.app-shell:-webkit-full-screen .visibility-head p {
  display: none;
}

.app-shell:fullscreen .alignment-controls,
.app-shell:-webkit-full-screen .alignment-controls,
.app-shell:fullscreen .visibility-controls,
.app-shell:-webkit-full-screen .visibility-controls {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.app-shell:fullscreen .alignment-actions,
.app-shell:-webkit-full-screen .alignment-actions,
.app-shell:fullscreen .visibility-actions,
.app-shell:-webkit-full-screen .visibility-actions {
  grid-column: span 3;
}

.app-shell:fullscreen .rare-event-card,
.app-shell:-webkit-full-screen .rare-event-card {
  padding: 8px;
}

.app-shell:fullscreen .alignment-visual-canvas,
.app-shell:-webkit-full-screen .alignment-visual-canvas {
  width: 132px;
  height: 65px;
  flex-basis: 132px;
}

.app-shell:fullscreen .tracker-panel,
.app-shell:-webkit-full-screen .tracker-panel {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10;
  display: grid;
  align-content: start;
  width: var(--fullscreen-panel-width);
  max-height: var(--fullscreen-panel-max-height);
  margin: 0;
  padding: 14px;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(8, 13, 15, 0.78);
  backdrop-filter: blur(12px);
}

.app-shell:fullscreen .object-toggles,
.app-shell:-webkit-full-screen .object-toggles {
  align-content: start;
}

.app-shell:fullscreen .tracker-panel::before,
.app-shell:-webkit-full-screen .tracker-panel::before {
  content: "Tracked objects";
  display: block;
  margin-bottom: 12px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 850;
}

.app-shell:fullscreen .object-toggle-row,
.app-shell:-webkit-full-screen .object-toggle-row {
  display: grid;
  grid-template-columns: 1fr;
}

.app-shell:fullscreen .object-toggle span,
.app-shell:-webkit-full-screen .object-toggle span {
  white-space: normal;
}

.app-shell:fullscreen .object-list,
.app-shell:-webkit-full-screen .object-list {
  display: none;
}

.app-shell:fullscreen .readout,
.app-shell:-webkit-full-screen .readout {
  bottom: 22px;
}

@media (max-width: 1180px) {
  .app-shell:fullscreen,
  .app-shell:-webkit-full-screen {
    --fullscreen-edge: 12px;
    --fullscreen-panel-width: 238px;
    --fullscreen-panel-gap: 14px;
    --fullscreen-panel-max-height: calc(100vh - 24px);
    --fullscreen-toolbar-reserve: 290px;
  }

  .app-shell:fullscreen .toolbar,
  .app-shell:-webkit-full-screen .toolbar {
    top: var(--fullscreen-edge);
    left: var(--fullscreen-edge);
    padding: 10px;
  }

  .app-shell:fullscreen .tracker-panel,
  .app-shell:-webkit-full-screen .tracker-panel {
    top: var(--fullscreen-edge);
    right: var(--fullscreen-edge);
    padding: 10px;
  }

  .app-shell:fullscreen .alignment-panel,
  .app-shell:-webkit-full-screen .alignment-panel,
  .app-shell:fullscreen .visibility-panel,
  .app-shell:-webkit-full-screen .visibility-panel {
    top: 238px;
    left: var(--fullscreen-edge);
    padding: 10px;
  }

  .app-shell:fullscreen .alignment-panel h2,
  .app-shell:-webkit-full-screen .alignment-panel h2,
  .app-shell:fullscreen .visibility-panel h2,
  .app-shell:-webkit-full-screen .visibility-panel h2 {
    font-size: 0.86rem;
  }

  .app-shell:fullscreen .alignment-controls,
  .app-shell:-webkit-full-screen .alignment-controls,
  .app-shell:fullscreen .visibility-controls,
  .app-shell:-webkit-full-screen .visibility-controls {
    gap: 7px;
  }

  .app-shell:fullscreen .alignment-controls select,
  .app-shell:-webkit-full-screen .alignment-controls select,
  .app-shell:fullscreen .visibility-controls select,
  .app-shell:-webkit-full-screen .visibility-controls select {
    min-height: 34px;
    font-size: 0.78rem;
  }

  .app-shell:fullscreen .tracker-panel::before,
  .app-shell:-webkit-full-screen .tracker-panel::before {
    margin-bottom: 8px;
    font-size: 0.76rem;
  }

  .app-shell:fullscreen .object-toggles,
  .app-shell:-webkit-full-screen .object-toggles {
    gap: 8px;
  }

  .app-shell:fullscreen .object-toggle-heading,
  .app-shell:-webkit-full-screen .object-toggle-heading {
    min-height: 28px;
    font-size: 0.76rem;
  }

  .app-shell:fullscreen .toggle-indicator,
  .app-shell:-webkit-full-screen .toggle-indicator {
    width: 8px;
    height: 8px;
  }

  .app-shell:fullscreen .object-toggle-row,
  .app-shell:-webkit-full-screen .object-toggle-row {
    gap: 6px;
    margin-top: 6px;
  }

  .app-shell:fullscreen .object-toggle,
  .app-shell:-webkit-full-screen .object-toggle {
    min-height: 34px;
    gap: 7px;
    padding: 0 9px;
    font-size: 0.78rem;
  }

  .app-shell:fullscreen .object-toggle input,
  .app-shell:-webkit-full-screen .object-toggle input {
    width: 14px;
    height: 14px;
  }
}

.app-shell:fullscreen .controls > .alignment-panel,
.app-shell:-webkit-full-screen .controls > .alignment-panel,
.app-shell:fullscreen .controls > .visibility-panel,
.app-shell:-webkit-full-screen .controls > .visibility-panel {
  position: static;
  z-index: auto;
  align-self: end;
  flex: 0 1 205px;
  width: auto;
  min-width: 178px;
  max-width: 220px;
  margin: 0;
  padding: 0 10px;
  background: rgba(8, 13, 15, 0.72);
  backdrop-filter: none;
}

.app-shell:fullscreen .controls > .alignment-panel[open],
.app-shell:-webkit-full-screen .controls > .alignment-panel[open],
.app-shell:fullscreen .controls > .visibility-panel[open],
.app-shell:-webkit-full-screen .controls > .visibility-panel[open] {
  flex-basis: 100%;
  max-width: none;
  padding: 10px;
}

.app-shell:fullscreen .controls > .alignment-panel[open] .alignment-body,
.app-shell:-webkit-full-screen .controls > .alignment-panel[open] .alignment-body,
.app-shell:fullscreen .controls > .visibility-panel[open] .visibility-body,
.app-shell:-webkit-full-screen .controls > .visibility-panel[open] .visibility-body {
  max-height: min(52vh, 520px);
  max-height: min(52dvh, 520px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
  -webkit-overflow-scrolling: touch;
}

.app-shell:fullscreen .controls > .alignment-panel .alignment-summary,
.app-shell:-webkit-full-screen .controls > .alignment-panel .alignment-summary,
.app-shell:fullscreen .controls > .visibility-panel .visibility-summary,
.app-shell:-webkit-full-screen .controls > .visibility-panel .visibility-summary {
  min-height: 36px;
  gap: 8px;
}

.app-shell:fullscreen .controls > .alignment-panel h2,
.app-shell:-webkit-full-screen .controls > .alignment-panel h2,
.app-shell:fullscreen .controls > .visibility-panel h2,
.app-shell:-webkit-full-screen .controls > .visibility-panel h2 {
  font-size: 0.74rem;
  white-space: nowrap;
}

details.tracker-panel {
  display: grid;
  gap: 14px;
  margin-bottom: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.58);
}

.tracker-panel-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

.tracker-panel-summary::-webkit-details-marker {
  display: none;
}

.tracker-panel-summary h3 {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.2;
}

.tracker-panel-summary p {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.tracker-panel:not([open]) .toggle-indicator {
  transform: rotate(-45deg);
}

.tracker-panel[open] .object-toggles {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.object-list-panel {
  margin-top: 14px;
  -webkit-user-select: none;
  user-select: none;
}

.object-toggles {
  display: grid;
  gap: 16px;
}

.object-toggle-group {
  display: block;
}

.object-toggle-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  min-height: 38px;
  padding: 0;
  border: 0;
  color: var(--text);
  background: transparent;
  font-size: 0.95rem;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
  list-style: none;
}

.object-toggle-heading::-webkit-details-marker {
  display: none;
}

.toggle-indicator {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.16s ease;
}

.object-toggle-group:not([open]) .toggle-indicator {
  transform: rotate(-45deg);
}

.object-toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 9px;
}

.object-toggle {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.68);
  color: var(--text);
  cursor: pointer;
}

.object-toggle input {
  width: 16px;
  height: 16px;
  min-height: 0;
  accent-color: var(--object-color);
}

.object-toggle span {
  white-space: nowrap;
}

.object-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 10px;
}

.object-card {
  display: grid;
  gap: 8px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.68);
  cursor: pointer;
}

.object-card:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(31, 41, 44, 0.82);
}

.object-card.is-unavailable {
  border-style: dashed;
  opacity: 0.78;
}

.object-card.is-unavailable .object-dot {
  background: transparent;
  border: 1px solid var(--object-color);
  box-shadow: none;
}

.object-card h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  line-height: 1.2;
}

.object-card p {
  font-size: 0.9rem;
  line-height: 1.45;
}

.status-dot,
.object-dot {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--object-color);
  box-shadow: 0 0 16px var(--object-color);
}

.object-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.seo-content {
  display: grid;
  gap: 18px;
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(18, 25, 27, 0.66);
}

.seo-intro {
  max-width: 780px;
}

.seo-intro h2,
.seo-faq-panel h2 {
  margin-top: 4px;
  font-size: clamp(1.18rem, 2vw, 1.58rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.seo-intro p,
.seo-grid p,
.seo-faq p {
  color: var(--muted);
  line-height: 1.55;
}

.seo-intro > p:last-child {
  margin-top: 8px;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.seo-grid article,
.seo-faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.58);
}

.seo-grid article {
  padding: 14px;
}

.seo-grid h3 {
  margin: 0 0 7px;
  font-size: 0.98rem;
  line-height: 1.2;
}

.seo-grid p,
.seo-faq p {
  font-size: 0.9rem;
}

.seo-faq-panel {
  display: grid;
  gap: 10px;
}

.seo-faq-panel > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 32, 35, 0.58);
  cursor: pointer;
  list-style: none;
}

.seo-faq-panel > summary h2 {
  margin: 0;
}

.seo-faq-panel > summary::-webkit-details-marker {
  display: none;
}

.seo-faq-panel:not([open]) .toggle-indicator {
  transform: rotate(-45deg);
}

.seo-faq {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.seo-faq details {
  padding: 0;
}

.seo-faq summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  color: var(--text);
  font-weight: 750;
  cursor: pointer;
}

.seo-faq p {
  padding: 0 14px 14px;
}

.seo-live-answer {
  display: grid;
  gap: 4px;
  margin: 2px 14px 12px;
  padding: 12px;
  border: 1px solid rgba(246, 196, 90, 0.28);
  border-radius: 8px;
  background: rgba(246, 196, 90, 0.08);
}

.seo-live-answer strong {
  color: var(--text);
  font-size: 1.02rem;
}

.seo-live-answer p {
  padding: 0;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 18px 0 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(12, 18, 19, 0.68);
}

.site-footer p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.site-footer nav,
.legal-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.site-footer a,
.legal-nav a {
  font-size: 0.88rem;
  font-weight: 750;
}

.legal-page {
  width: min(940px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 20px 0 34px;
}

.legal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.legal-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.legal-brand strong {
  font-size: 1.2rem;
}

.legal-hero,
.legal-section,
.policy-card,
.contact-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(18, 25, 27, 0.72);
}

.legal-hero {
  display: grid;
  gap: 8px;
  padding: 22px;
}

.legal-hero h1 {
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1;
  letter-spacing: 0;
}

.legal-hero p,
.legal-section p,
.legal-section li,
.policy-card p,
.contact-form p {
  color: var(--muted);
  line-height: 1.6;
}

.legal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.legal-section,
.policy-card,
.contact-form {
  display: grid;
  gap: 12px;
  margin-top: 12px;
  padding: 18px;
}

.legal-section h2,
.policy-card h2 {
  font-size: 1.15rem;
  line-height: 1.2;
}

.legal-section ul,
.policy-card ul {
  display: grid;
  gap: 8px;
  padding-left: 20px;
}

.legal-section a,
.policy-card a,
.contact-form a {
  color: var(--accent-strong);
}

.source-list {
  display: grid;
  gap: 10px;
  list-style: none;
  padding: 0;
}

.source-list li {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
}

.contact-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(12, 18, 19, 0.72);
  color: var(--text);
  padding: 12px;
  font: inherit;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

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

.moon-phase {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.moon-phase-visual {
  display: grid;
  gap: 6px;
  justify-items: center;
  flex: 0 0 auto;
}

.moon-phase-canvas {
  width: 122px;
  height: 122px;
  filter: drop-shadow(0 0 22px rgba(216, 228, 238, 0.22));
}

.moon-phase-visual span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.moon-phase strong {
  display: block;
}

.moon-phase p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.88rem;
}

.insight-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.insight-card strong {
  display: block;
}

.insight-card p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.insight-orb {
  width: 74px;
  height: 74px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.sun-orb {
  background:
    radial-gradient(circle at 34% 31%, #fff8c9 0 13%, #ffd05a 14% 38%, #f08728 64%, #a33313 100%);
  box-shadow: 0 0 34px rgba(255, 199, 86, 0.32);
}

.mars-season-dial {
  position: relative;
  width: 86px;
  height: 86px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    conic-gradient(from -90deg, #82c7ff 0 25%, #f1cc75 0 50%, #d67a4f 0 75%, #b5d0ef 0 100%);
}

.mars-season-dial::before {
  position: absolute;
  inset: 21px;
  border-radius: 50%;
  background: #7f351f;
  content: "";
}

.mars-season-dial span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 39px;
  border-radius: 99px;
  background: #fff0a8;
  transform: translate(-50%, -100%) rotate(var(--season-angle));
  transform-origin: 50% 100%;
  box-shadow: 0 0 12px rgba(255, 240, 168, 0.6);
}

.saturn-ring-visual {
  position: relative;
  width: 104px;
  height: 74px;
  flex: 0 0 auto;
}

.saturn-disc {
  position: absolute;
  left: 31px;
  top: 14px;
  z-index: 2;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(145deg, #f1dc92, #a77839);
  box-shadow: inset -9px -4px 14px rgba(45, 27, 10, 0.32);
}

.saturn-ring {
  position: absolute;
  left: 7px;
  top: var(--ring-top);
  width: 90px;
  height: var(--ring-height);
  border: 5px solid rgba(220, 197, 119, 0.8);
  border-radius: 50%;
  transform: rotate(-9deg);
}

.jupiter-bands {
  position: relative;
  overflow: hidden;
  width: 96px;
  height: 96px;
  flex: 0 0 auto;
  border-radius: 50%;
  background:
    linear-gradient(#c99664 0 13%, #f0d9ae 13% 25%, #9c613e 25% 37%, #ead4aa 37% 49%, #bc7b4a 49% 61%, #f3ddb7 61% 74%, #9f6748 74% 86%, #dfbf8f 86% 100%);
  box-shadow: inset -18px -2px 24px rgba(58, 35, 22, 0.38), 0 0 22px rgba(217, 178, 135, 0.2);
}

.jupiter-bands span {
  position: absolute;
  left: var(--spot-x);
  top: 54%;
  width: 24px;
  height: 14px;
  border-radius: 50%;
  background: #b94b32;
  transform: translate(-50%, -50%);
  box-shadow: inset -4px -1px 5px rgba(61, 18, 13, 0.35);
}

.heritage-year {
  display: grid;
  width: 82px;
  height: 82px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(114, 239, 176, 0.5);
  border-radius: 50%;
  color: #d7ffe8;
  background: radial-gradient(circle, rgba(114, 239, 176, 0.24), rgba(20, 44, 36, 0.82));
  box-shadow: 0 0 22px rgba(114, 239, 176, 0.2);
  font-size: 1.12rem;
  font-weight: 900;
}

.detail-dialog {
  width: min(780px, calc(100vw - 28px));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #141b1e;
  color: var(--text);
  box-shadow: 0 28px 100px rgba(0, 0, 0, 0.58);
}

.detail-dialog::backdrop {
  background: rgba(5, 8, 10, 0.72);
  backdrop-filter: blur(4px);
}

.detail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

.detail-head h2 {
  margin-top: 3px;
  font-size: 1.2rem;
}

.close-button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.detail-body {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.detail-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #05080a;
}

.detail-media iframe,
.detail-media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  object-fit: contain;
  background: #05080a;
}

.detail-gallery {
  display: grid;
  gap: 10px;
}

.gallery-controls {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.gallery-button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.gallery-info {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.gallery-title {
  font-size: 0.98rem;
}

.gallery-caption,
.gallery-count {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.detail-stat {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.detail-stat strong {
  display: block;
  margin-top: 4px;
}

.detail-note {
  color: var(--muted);
  line-height: 1.5;
}

.detail-link {
  color: var(--accent-strong);
}

@media (max-width: 1024px) {
  .app-shell {
    width: min(100vw - 24px, 1180px);
    padding: 12px 0 18px;
  }

  .toolbar {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .brand {
    min-width: 0;
  }

  .controls {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    justify-content: stretch;
  }

  .controls > .icon-button,
  .controls > .text-button,
  .controls > .apply-button {
    padding-inline: 12px;
  }

  .time-control {
    grid-column: span 3;
  }

  .speed-control,
  .unit-control {
    grid-column: span 2;
  }

  .path-control {
    grid-column: span 2;
    justify-content: center;
  }

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

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

  .alignment-actions,
  .visibility-actions {
    grid-column: span 2;
  }

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

  .observer-location-controls {
    grid-template-columns: minmax(320px, 1fr) minmax(92px, 110px) minmax(170px, 220px);
  }

  .map-tools-row {
    grid-template-columns: 1fr;
  }

  .map-tools-row .alignment-panel,
  .map-tools-row .visibility-panel {
    min-height: auto;
  }

  .map-location-panel {
    grid-template-columns: 1fr;
  }

  .map-location-panel .observer-location-status {
    grid-column: auto;
  }

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

  .observer-light-summary {
    border-right: 0;
  }

  .rare-event-card {
    align-items: stretch;
  }
}

@media (max-width: 820px) {
  .app-shell {
    width: min(100vw - 16px, 1180px);
    padding: 8px 0 12px;
  }

  .toolbar {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
    padding-bottom: 6px;
  }

  .brand {
    min-width: 0;
    align-items: center;
    gap: 8px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  h1 {
    font-size: 1.25rem;
  }

  .brand p {
    display: none;
  }

  .site-nav {
    display: none;
  }

  .site-footer,
  .legal-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .legal-grid {
    grid-template-columns: 1fr;
  }

  .mobile-panel {
    display: block;
    margin-bottom: 6px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(24, 32, 35, 0.58);
  }

  .toolbar .mobile-panel {
    margin-bottom: 0;
  }

  .mobile-panel-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    cursor: pointer;
    list-style: none;
  }

  .mobile-panel-summary::-webkit-details-marker {
    display: none;
  }

  .mobile-panel-summary h2,
  .mobile-panel-summary h3 {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.2;
  }

  .mobile-panel-summary p {
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.76rem;
    line-height: 1.25;
  }

  .mobile-panel:not([open]) .toggle-indicator {
    transform: rotate(-45deg);
  }

  .controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: stretch;
    gap: 8px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .controls > * {
    min-width: 0;
  }

  .time-control,
  .speed-control {
    grid-column: span 2;
  }

  .path-control,
  .unit-control {
    grid-column: span 1;
    justify-content: center;
  }

  .map-intro {
    display: none;
  }

  .map-tools-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 6px;
  }

  .map-tools-row > details {
    margin-bottom: 0;
  }

  .map-tools-row .map-location-panel,
  .map-tools-row .alignment-panel[open],
  .map-tools-row .visibility-panel[open] {
    grid-column: 1 / -1;
  }

  .map-tools-row .alignment-panel,
  .map-tools-row .visibility-panel {
    padding: 7px 9px;
    min-height: 58px;
  }

  .map-tools-row .alignment-summary,
  .map-tools-row .visibility-summary {
    min-height: 42px;
    gap: 8px;
  }

  .map-tools-row .alignment-head h2,
  .map-tools-row .visibility-head h2 {
    font-size: 0.78rem;
    line-height: 1.18;
    white-space: normal;
  }

  .map-location-panel {
    grid-template-columns: 1fr;
  }

  .map-stage {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 8px;
  }

  .map-path-control {
    position: static;
    align-self: flex-start;
    order: -1;
    width: auto;
    margin: 0 8px 2px;
    background: rgba(24, 32, 35, 0.72);
    backdrop-filter: none;
  }

  .map-stage canvas {
    width: 100%;
  }

  .map-location-panel .mobile-panel-summary {
    display: flex;
  }

  .observer-location-head {
    display: none;
  }

  .observer-location-controls,
  .observer-location-status {
    margin-top: 8px;
  }

  .observer-location-controls .text-button {
    min-height: 42px;
    white-space: nowrap;
  }

  .observer-location-status {
    min-height: 0;
  }

  .observer-light-summary {
    padding: 7px 8px;
  }

  details.tracker-panel {
    margin-bottom: 6px;
    padding: 8px 10px;
  }

  .tracker-panel-summary h3 {
    font-size: 0.88rem;
  }

  .tracker-panel-summary p {
    font-size: 0.76rem;
  }

  .app-shell.is-mobile-fullscreen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #071015;
  }

  .app-shell.is-mobile-fullscreen .map-stage {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 0;
    background: #071015;
    box-shadow: none;
  }

  .app-shell.is-mobile-fullscreen .map-path-control {
    position: absolute;
    top: 10px;
    right: 10px;
    align-self: auto;
    order: 0;
    width: auto;
    margin: 0;
    z-index: 13;
    background: rgba(8, 13, 15, 0.72);
    backdrop-filter: blur(10px);
  }

  .app-shell.is-mobile-fullscreen .map-stage canvas {
    width: min(100vw, 200dvh);
    max-height: 100vh;
    max-height: 100dvh;
  }

  .app-shell.is-mobile-fullscreen .map-intro,
  .app-shell.is-mobile-fullscreen .brand,
  .app-shell.is-mobile-fullscreen .object-list {
    display: none;
  }

  .app-shell.is-mobile-fullscreen .toolbar {
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    z-index: 12;
    display: block;
    max-height: min(44vh, 360px);
    max-height: min(44dvh, 360px);
    padding: 8px;
    overflow: auto;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    background: rgba(8, 13, 15, 0.76);
    backdrop-filter: blur(12px);
  }

  .app-shell.is-mobile-fullscreen .controls {
    display: grid;
    grid-template-columns: auto auto minmax(0, 1fr) auto;
    align-items: end;
    gap: 8px;
  }

  .app-shell.is-mobile-fullscreen .icon-button,
  .app-shell.is-mobile-fullscreen .text-button,
  .app-shell.is-mobile-fullscreen .apply-button,
  .app-shell.is-mobile-fullscreen input,
  .app-shell.is-mobile-fullscreen select {
    min-height: 36px;
    font-size: 0.82rem;
  }

  .app-shell.is-mobile-fullscreen .icon-button,
  .app-shell.is-mobile-fullscreen .text-button,
  .app-shell.is-mobile-fullscreen .apply-button {
    padding: 0 11px;
  }

  .app-shell.is-mobile-fullscreen .time-control {
    grid-column: span 2;
  }

  .app-shell.is-mobile-fullscreen .speed-control {
    grid-column: span 2;
  }

  .app-shell.is-mobile-fullscreen .path-control,
  .app-shell.is-mobile-fullscreen .unit-control {
    grid-column: span 2;
    min-height: 36px;
  }

  .app-shell.is-mobile-fullscreen .tracker-panel {
    position: absolute;
    right: 8px;
    bottom: 8px;
    left: 8px;
    z-index: 12;
    display: grid;
    align-content: start;
    max-height: min(32vh, 240px);
    max-height: min(32dvh, 240px);
    margin: 0;
    padding: 10px 58px 10px 10px;
    overflow: auto;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    background: rgba(8, 13, 15, 0.8);
    backdrop-filter: blur(12px);
  }

  .app-shell.is-mobile-fullscreen .alignment-panel,
  .app-shell.is-mobile-fullscreen .visibility-panel {
    position: absolute;
    right: 8px;
    bottom: calc(min(32vh, 240px) + 18px);
    bottom: calc(min(32dvh, 240px) + 18px);
    left: 8px;
    z-index: 12;
    max-height: min(31vh, 220px);
    max-height: min(31dvh, 220px);
    margin: 0;
    padding: 10px;
    overflow: auto;
    background: rgba(8, 13, 15, 0.8);
    backdrop-filter: blur(12px);
  }

  .app-shell.is-mobile-fullscreen .alignment-head p,
  .app-shell.is-mobile-fullscreen .visibility-head p {
    display: none;
  }

  .app-shell.is-mobile-fullscreen .alignment-head h2,
  .app-shell.is-mobile-fullscreen .visibility-head h2 {
    font-size: 0.82rem;
  }

  .app-shell.is-mobile-fullscreen .alignment-controls,
  .app-shell.is-mobile-fullscreen .visibility-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
  }

  .app-shell.is-mobile-fullscreen .alignment-controls label,
  .app-shell.is-mobile-fullscreen .alignment-actions,
  .app-shell.is-mobile-fullscreen .visibility-controls label,
  .app-shell.is-mobile-fullscreen .visibility-actions {
    grid-column: span 2;
  }

  .app-shell.is-mobile-fullscreen .alignment-result,
  .app-shell.is-mobile-fullscreen .visibility-result {
    min-height: 0;
    padding: 8px;
    font-size: 0.78rem;
  }

  .app-shell.is-mobile-fullscreen .rare-events-head {
    display: grid;
    grid-template-columns: 1fr;
  }

  .app-shell.is-mobile-fullscreen .observer-location-controls {
    grid-template-columns: 1fr;
  }

  .app-shell.is-mobile-fullscreen .rare-events-button {
    justify-self: stretch;
  }

  .app-shell.is-mobile-fullscreen .rare-event-card {
    display: grid;
    gap: 8px;
    padding: 8px;
  }

  .app-shell.is-mobile-fullscreen .alignment-visual-canvas {
    width: 100%;
    height: auto;
    aspect-ratio: 240 / 118;
    flex-basis: auto;
  }

  .app-shell.is-mobile-fullscreen .controls > .alignment-panel,
  .app-shell.is-mobile-fullscreen .controls > .visibility-panel {
    position: static;
    right: auto;
    bottom: auto;
    left: auto;
    grid-column: span 2;
    width: auto;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0 8px;
    overflow: visible;
    background: rgba(8, 13, 15, 0.72);
    backdrop-filter: none;
  }

  .app-shell.is-mobile-fullscreen .controls > .alignment-panel[open],
  .app-shell.is-mobile-fullscreen .controls > .visibility-panel[open] {
    grid-column: 1 / -1;
    padding: 8px;
  }

  .app-shell.is-mobile-fullscreen .controls > .alignment-panel[open] .alignment-body,
  .app-shell.is-mobile-fullscreen .controls > .visibility-panel[open] .visibility-body {
    max-height: min(48vh, 430px);
    max-height: min(48dvh, 430px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .app-shell.is-mobile-fullscreen .controls > .alignment-panel .alignment-summary,
  .app-shell.is-mobile-fullscreen .controls > .visibility-panel .visibility-summary {
    min-height: 34px;
    gap: 8px;
  }

  .app-shell.is-mobile-fullscreen .controls > .alignment-panel h2,
  .app-shell.is-mobile-fullscreen .controls > .visibility-panel h2 {
    font-size: 0.74rem;
    white-space: nowrap;
  }

  .app-shell.is-mobile-fullscreen .tracker-panel::before {
    content: "Tracked objects";
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 0.78rem;
    font-weight: 850;
  }

  .app-shell.is-mobile-fullscreen .object-toggles {
    gap: 8px;
  }

  .app-shell.is-mobile-fullscreen .object-toggle-heading {
    min-height: 28px;
    font-size: 0.8rem;
  }

  .app-shell.is-mobile-fullscreen .object-toggle-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-top: 6px;
  }

  .app-shell.is-mobile-fullscreen .object-toggle {
    min-height: 34px;
    gap: 7px;
    padding: 0 9px;
    font-size: 0.78rem;
  }

  .app-shell.is-mobile-fullscreen .object-toggle input {
    width: 14px;
    height: 14px;
  }

  .app-shell.is-mobile-fullscreen .readout {
    position: absolute;
    left: 8px;
    right: auto;
    bottom: calc(min(32vh, 240px) + 18px);
    bottom: calc(min(32dvh, 240px) + 18px);
    z-index: 11;
    padding: 0;
    background: transparent;
  }

  .app-shell.is-mobile-fullscreen .readout > div {
    min-width: min(210px, calc(100vw - 86px));
    padding: 8px 10px;
  }

  .app-shell.is-mobile-fullscreen .readout strong {
    font-size: 0.82rem;
  }

  .app-shell.is-mobile-fullscreen .map-fullscreen-button {
    right: 10px;
    bottom: 10px;
    z-index: 13;
    display: grid;
    width: 40px;
    height: 40px;
  }

  .readout {
    position: static;
    padding: 12px;
    background: rgba(12, 18, 19, 0.6);
  }

  .readout > div {
    flex: 1 1 100%;
  }

  .object-toggle-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(136px, 1fr));
  }

  .object-toggle {
    min-width: 0;
  }

  .object-toggle span {
    white-space: normal;
  }

  .object-list {
    grid-template-columns: 1fr;
  }

  .seo-content {
    gap: 14px;
    padding: 14px;
  }

  .seo-grid {
    grid-template-columns: 1fr;
  }

  .alignment-panel {
    padding: 12px;
  }

  .alignment-controls,
  .visibility-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .alignment-actions,
  .visibility-actions {
    grid-column: span 2;
  }

  .alignment-result,
  .visibility-result {
    align-items: stretch;
    flex-direction: column;
  }

  .observer-location-controls {
    grid-template-columns: 1fr;
  }

  .observer-status-grid {
    grid-template-columns: 1fr;
  }

  .observer-light-summary {
    padding-inline: 0;
    border-inline: 0;
  }

  .observer-light-summary > div span:last-child {
    white-space: normal;
  }

  .rare-event-card {
    align-items: stretch;
    flex-direction: column;
  }

  .alignment-visual-canvas {
    width: 100%;
    height: auto;
    aspect-ratio: 240 / 118;
    flex-basis: auto;
  }

  .detail-dialog {
    width: min(100vw - 16px, 780px);
    max-height: calc(100dvh - 16px);
  }

  .detail-head {
    align-items: flex-start;
  }

  .gallery-controls {
    grid-template-columns: 42px minmax(0, 1fr) 42px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .controls {
    grid-template-columns: 1fr;
  }

  .app-shell.is-mobile-fullscreen .controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .time-control,
  .speed-control,
  .path-control,
  .unit-control {
    grid-column: auto;
  }

  .app-shell.is-mobile-fullscreen .time-control,
  .app-shell.is-mobile-fullscreen .speed-control,
  .app-shell.is-mobile-fullscreen .path-control,
  .app-shell.is-mobile-fullscreen .unit-control,
  .app-shell.is-mobile-fullscreen .controls > .alignment-panel,
  .app-shell.is-mobile-fullscreen .controls > .visibility-panel {
    grid-column: 1 / -1;
  }

  .app-shell.is-mobile-fullscreen .readout {
    max-width: calc(100vw - 76px);
    gap: 6px;
  }

  .app-shell.is-mobile-fullscreen .readout > div {
    min-width: min(176px, calc(100vw - 86px));
  }

  .alignment-controls {
    grid-template-columns: 1fr;
  }

  .visibility-controls {
    grid-template-columns: 1fr;
  }

  .alignment-actions,
  .visibility-actions {
    grid-column: auto;
  }

  .readout {
    gap: 8px;
  }

  .detail-head {
    flex-direction: column;
  }

  .close-button {
    width: 100%;
  }
}

.app-shell:fullscreen .tracker-panel::before,
.app-shell:-webkit-full-screen .tracker-panel::before,
.app-shell.is-mobile-fullscreen .tracker-panel::before {
  display: none;
  content: none;
}

/* Onboarding tour */
.onboarding-overlay {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(3, 8, 10, 0.62);
}

body.is-onboarding-open {
  overflow: hidden;
}

.onboarding-modal {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 18px;
  width: min(600px, 90vw);
  max-height: min(86vh, 680px);
  overflow: auto;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(17, 24, 27, 0.96);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.45);
  animation: onboarding-enter 220ms ease-out;
}

.onboarding-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
}

.onboarding-content {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding-right: 34px;
}

.onboarding-icon {
  display: grid;
  place-items: center;
  width: 112px;
  height: 112px;
  border: 1px solid rgba(246, 196, 90, 0.26);
  border-radius: 8px;
  background:
    radial-gradient(circle at 34% 30%, rgba(255, 232, 142, 0.9) 0 12px, transparent 13px),
    radial-gradient(circle at 62% 68%, rgba(80, 161, 190, 0.8) 0 36px, rgba(80, 161, 190, 0.18) 37px, transparent 60px),
    rgba(8, 13, 15, 0.72);
}

.onboarding-icon::after {
  content: "";
  width: 58px;
  height: 28px;
  border: 3px solid rgba(246, 196, 90, 0.78);
  border-top-color: transparent;
  border-radius: 50%;
  transform: rotate(-18deg);
}

.onboarding-icon.is-welcome {
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 232, 142, 0.96) 0 12px, transparent 13px),
    radial-gradient(circle at 68% 68%, rgba(80, 161, 190, 0.86) 0 38px, rgba(80, 161, 190, 0.2) 39px, transparent 62px),
    linear-gradient(145deg, rgba(246, 196, 90, 0.12), rgba(143, 230, 255, 0.1)),
    rgba(8, 13, 15, 0.72);
}

.onboarding-icon.is-welcome::after {
  width: 66px;
  height: 66px;
  border: 3px solid rgba(246, 196, 90, 0.84);
  border-left-color: rgba(143, 230, 255, 0.72);
  border-bottom-color: transparent;
  border-radius: 50%;
  transform: rotate(-22deg);
}

.onboarding-icon.is-location::after {
  width: 28px;
  height: 38px;
  border: 3px solid rgba(246, 196, 90, 0.9);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
}

.onboarding-icon.is-time::after {
  width: 48px;
  height: 48px;
  border-color: rgba(246, 196, 90, 0.9);
  border-radius: 50%;
  transform: none;
}

.onboarding-icon.is-objects::after {
  width: 62px;
  height: 42px;
  border-color: rgba(143, 230, 255, 0.85);
  border-radius: 50%;
}

.onboarding-icon.is-alignment::after {
  width: 68px;
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, #f6c45a, #ff9167);
  transform: rotate(-18deg);
}

.onboarding-icon.is-visibility::after {
  width: 60px;
  height: 34px;
  border-color: rgba(175, 234, 143, 0.85);
  border-top-color: transparent;
}

.onboarding-copy {
  display: grid;
  gap: 9px;
}

.onboarding-copy h2 {
  font-size: clamp(1.35rem, 4vw, 2rem);
  line-height: 1.05;
}

.onboarding-copy p {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.5;
}

.onboarding-progress {
  display: grid;
  gap: 8px;
}

.onboarding-progress-text {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.onboarding-progress-track {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.onboarding-progress-bar {
  width: 20%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #ff9167);
  transition: width 180ms ease;
}

.onboarding-actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.onboarding-actions button {
  min-height: 44px;
}

.onboarding-step {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 170ms ease, transform 170ms ease;
}

.onboarding-modal.is-transitioning .onboarding-step {
  opacity: 0;
  transform: translateY(10px);
}

@keyframes onboarding-enter {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 640px) {
  .onboarding-overlay {
    align-items: end;
    padding: 14px;
  }

  .onboarding-modal {
    width: 90vw;
    padding: 20px;
  }

  .onboarding-content {
    grid-template-columns: 1fr;
    padding-right: 0;
  }

  .onboarding-icon {
    width: 78px;
    height: 78px;
  }

  .onboarding-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}