:root {
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --ink: #ededed;
  --muted: #929292;
  --paper: #000;
  --panel: #0b0b0c;
  --line: #292a2d;
  --dark: #050506;
  --acid: #b8b8b8;
  --button: #0b2238;
  --button-hover: #102f4c;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  color-scheme: dark;
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

a {
  color: inherit;
}

main {
  width: min(1580px, 100%);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.site-header h1 {
  margin: 0;
  font-size: clamp(23px, 2.2vw, 32px);
  font-weight: 620;
  letter-spacing: -0.025em;
}

.calculator-layout {
  display: block;
  padding-top: 16px;
  padding-bottom: 40px;
}

.control-panel,
.preview-card,
.detail-card,
.stat,
.error-card {
  border: 1px solid var(--line);
  background: var(--panel);
}

.control-panel {
  position: static;
  overflow: visible;
  max-height: none;
  padding: 18px;
  border-radius: 8px;
  box-shadow: none;
}

.section-heading {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.section-heading > span {
  display: grid;
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  border: 1px solid #3a3a3d;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.section-heading h2 {
  margin: 1px 0 3px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.divider {
  height: 1px;
  margin: 16px 0;
  background: var(--line);
}

.target-control-grid {
  display: grid;
  grid-template-columns: minmax(160px, 0.9fr) minmax(220px, 1.25fr) minmax(230px, 1.25fr) minmax(190px, 0.85fr);
  align-items: end;
  gap: 14px;
}

.target-control-grid > *,
.equipment-control-grid > * {
  min-width: 0;
}

.target-control-grid > label[for="capture-time"] {
  min-inline-size: 0;
  max-inline-size: 100%;
  overflow: hidden;
}

.location-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 7px;
}

.location-control .secondary-button {
  min-width: 112px;
  padding-inline: 10px;
}

.coordinate-strip {
  display: grid;
  grid-template-columns: 150px 150px minmax(160px, 1fr);
  align-items: end;
  gap: 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.time-control-strip {
  margin-top: 12px;
  padding: 11px 12px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #070708;
}

.time-scrubber-heading,
.time-scrubber-controls,
.time-scrubber-scale {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.time-scrubber-heading {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 650;
}

.time-scrubber-heading output {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.time-control-strip input[type="range"] {
  width: 100%;
  height: 20px;
  margin: 0;
  accent-color: var(--acid);
}

.time-scrubber-controls {
  justify-content: flex-start;
  gap: 6px;
  margin-top: 5px;
}

.time-scrubber-controls button {
  min-width: 58px;
  height: 34px;
  border: 1px solid #183955;
  border-radius: 5px;
  background: var(--button);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.time-scrubber-controls button:hover {
  border-color: #315b7c;
  background: var(--button-hover);
}

.time-scrubber-controls #time-play {
  min-width: 70px;
  background: var(--button);
}

.time-scrubber-controls label {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
}

.time-scrubber-controls select {
  width: 112px;
  height: 34px;
  margin: 0;
  padding: 0 8px;
  font-size: 12px;
}

.time-scrubber-scale {
  margin-top: 5px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.preview-layer-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0 0;
}

.preview-layer-controls legend {
  float: left;
  margin-right: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.preview-layer-controls label {
  position: relative;
}

.preview-layer-controls input {
  position: absolute;
  opacity: 0;
}

.preview-layer-controls span {
  display: block;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #070708;
  color: var(--muted);
  font-size: 11px;
}

.preview-layer-controls input:checked + span {
  border-color: #264b69;
  background: var(--button);
  color: var(--ink);
}

.preview-layer-controls input:disabled + span {
  opacity: 0.4;
}

.preview-layer-controls input:focus-visible + span {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

.coordinate-strip .location-status {
  margin: 0 0 12px;
}

.equipment-control-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  align-items: end;
  gap: 14px;
}

.equipment-control-grid .camera-control,
.equipment-control-grid .telescope-control {
  grid-column: span 2;
}

.equipment-control-grid .effective-focal {
  grid-column: 1 / -1;
  align-self: end;
  min-height: 44px;
  margin: 0;
  justify-content: flex-start;
}

.equipment-database-note {
  grid-column: 1 / -1;
  margin: -5px 1px 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.equipment-control-grid .effective-focal strong {
  margin-left: 8px;
  color: var(--acid);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.control-panel label,
.control-panel legend {
  display: block;
  color: var(--ink);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.control-panel select,
.control-panel input[type="text"],
.control-panel input[type="number"],
.control-panel input[type="datetime-local"] {
  display: block;
  min-width: 0;
  max-width: 100%;
  width: 100%;
  height: 44px;
  margin-top: 7px;
  border: 1px solid #333438;
  border-radius: 5px;
  outline: none;
  background: #050506;
  color: var(--ink);
  font-size: 15px;
  transition:
    border-color 150ms ease,
    box-shadow 150ms ease;
}

.control-panel select,
.control-panel input[type="text"],
.control-panel input[type="datetime-local"] {
  padding: 0 11px;
}

#capture-time {
  min-inline-size: 0 !important;
  max-inline-size: 100%;
  inline-size: 100%;
  color: var(--ink);
  font-family: inherit;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: normal;
  text-align: left;
  -webkit-appearance: none;
  appearance: none;
}

#capture-time::-webkit-date-and-time-value,
#capture-time::-webkit-datetime-edit {
  display: block;
  min-width: 0;
  max-width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  color: inherit;
  font: inherit;
  text-align: left;
}

#capture-time::-webkit-datetime-edit-fields-wrapper {
  padding: 0;
  text-align: left;
}

.control-panel input[type="number"] {
  padding: 0 42px 0 11px;
}

.control-panel select:focus,
.control-panel input:focus {
  border-color: #787a80;
  box-shadow: none;
}

.control-panel > label {
  margin-top: 12px;
}

.input-unit {
  position: relative;
  display: block;
}

.input-unit input {
  margin-top: 7px;
}

.input-unit small {
  position: absolute;
  top: 50%;
  right: 11px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  pointer-events: none;
  transform: translateY(-18%);
}

.control-panel label em {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
  font-style: normal;
  font-weight: 400;
}

.custom-multiplier[hidden] {
  display: none;
}

.effective-focal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 12px 0 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #070708;
  color: var(--muted);
  font-size: 12px;
}

.effective-focal strong {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
}

.location-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 8px;
}

.secondary-button {
  min-height: 44px;
  padding: 0 13px;
  border: 1px solid #183955;
  border-radius: 5px;
  background: var(--button);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.secondary-button:hover {
  border-color: #315b7c;
  background: var(--button-hover);
  color: var(--ink);
}

.location-status {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.location-row + .form-grid,
.location-status + .form-grid {
  margin-top: 12px;
}

fieldset {
  margin: 16px 0 0;
  padding: 0;
  border: 0;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin-top: 7px;
  padding: 4px;
  border: 1px solid #333438;
  border-radius: 6px;
  background: #050506;
}

.segmented label {
  position: relative;
}

.segmented input {
  position: absolute;
  opacity: 0;
}

.segmented span {
  display: grid;
  min-height: 38px;
  place-items: center;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
}

.segmented input:checked + span {
  background: var(--button);
  color: var(--ink);
  box-shadow: none;
}

.segmented input:focus-visible + span {
  outline: 2px solid var(--acid);
  outline-offset: 1px;
}

.results-panel {
  min-width: 0;
  margin-top: 12px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  align-items: start;
  gap: 10px;
}

.preview-card {
  overflow: hidden;
  border-radius: 8px;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 18px;
  background: var(--panel);
}

.preview-header p {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  text-transform: uppercase;
}

.preview-header h2 {
  margin: 0;
  font-size: 25px;
  font-weight: 560;
  letter-spacing: -0.03em;
}

.fov-viewport {
  display: grid;
  min-height: clamp(400px, 46vw, 650px);
  padding: 4%;
  place-items: center;
  border-top: 1px solid var(--line);
  background: #000;
}

.preview-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mission-reference {
  display: flex;
  align-items: center;
  gap: 9px;
  max-width: 270px;
  color: var(--ink);
  text-decoration: none;
}

.mission-reference img {
  width: 64px;
  height: 64px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #000;
  object-fit: contain;
}

.mission-reference span,
.mission-reference b,
.mission-reference small {
  display: block;
}

.mission-reference b {
  font-size: 12px;
}

.mission-reference small {
  margin-top: 3px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.35;
}

.mission-reference:hover b {
  text-decoration: underline;
}

.visibility {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #080809;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.visibility::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.visibility.good {
  border-color: var(--line);
  background: #080809;
  color: var(--muted);
}

.visibility.warn {
  border-color: var(--line);
  background: #080809;
  color: var(--muted);
}

.visibility.bad {
  border-color: var(--line);
  background: #080809;
  color: var(--muted);
}

.sensor-preview {
  position: relative;
  overflow: hidden;
  width: min(96%, 1080px);
  max-height: 610px;
  border: 1px solid #d0d0d0;
  box-shadow: none;
  background: #000;
}

.sensor-preview::before {
  display: none;
}

.sensor-preview::after {
  display: none;
}

.equipment-key {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.key-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 15px;
  border-bottom: 1px solid var(--line);
  background: #101011;
}

.key-heading span {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.key-heading small {
  overflow: hidden;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.key-target {
  display: grid;
  grid-template-columns: 5px 1fr;
  gap: 11px;
  margin: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #070708;
}

.key-target > i {
  border-radius: 1px;
  background: #6d6d70;
  box-shadow: none;
}

.key-target strong,
.key-target small {
  display: block;
}

.key-target strong {
  font-size: 15px;
}

.key-target small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.key-target p {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 9px 0 0;
}

.key-target b {
  padding: 3px 5px;
  border-radius: 3px;
  background: #202023;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
}

.key-metrics {
  padding: 0 14px;
}

.key-metrics > div {
  padding: 8px 0;
}

.key-metrics dt,
.key-metrics dd {
  font-size: 11px;
}

.equipment-key .mission-reference {
  max-width: none;
  margin: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.equipment-key .mission-reference img {
  width: 52px;
  height: 52px;
}

.projection-method {
  margin: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #080809;
}

.projection-method span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.projection-method p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}

.planet-stage {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  width: var(--planet-size);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  transform-origin: center;
}

.body-rotation {
  position: absolute;
  inset: 0;
  transform-origin: center;
}

.target-canvas,
.target-photo {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 50%;
  background: #050705;
  box-shadow: none;
  transform: scaleY(var(--polar-ratio, 1));
}

.target-canvas {
  display: block;
}

.target-canvas.texture-error {
  background: #242424;
}

.target-photo {
  object-fit: cover;
  object-position: center;
}

.phase-layer {
  position: absolute;
  inset: -1px;
  z-index: 5;
  width: calc(100% + 2px);
  height: calc(100% + 2px);
  overflow: visible;
  transform-origin: center;
  pointer-events: none;
}

.phase-layer path {
  fill: rgba(2, 3, 2, 0.9);
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 0.35;
}

.saturn-ring-plane {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 232.6%;
  max-width: none;
  aspect-ratio: 1;
  object-fit: contain;
  filter: none;
  transform: translate(-50%, -50%) scaleY(var(--ring-opening));
  transform-origin: center;
  pointer-events: none;
}

.saturn-ring-back {
  z-index: 1;
}

.saturn-ring-front {
  z-index: 4;
}

.preview-moon {
  position: absolute;
  z-index: 4;
  display: block;
  height: auto;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 0;
  background: var(--moon-color);
  box-shadow: none;
  transform: translate(-50%, -50%);
}

.preview-moon.transiting {
  z-index: 6;
}

.preview-moon b {
  position: absolute;
  z-index: 8;
  display: block;
  padding: 3px 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #050506;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  pointer-events: none;
  white-space: nowrap;
}

.preview-caption {
  margin: 0;
  padding: 11px 16px 13px;
  border-top: 1px solid var(--line);
  background: #080809;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.45;
}

.primary-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.stat {
  min-width: 0;
  padding: 14px;
  border-radius: 6px;
  box-shadow: none;
}

.stat span,
.stat small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.stat strong {
  display: block;
  overflow: hidden;
  margin: 8px 0 6px;
  font-size: clamp(18px, 1.65vw, 25px);
  font-weight: 560;
  letter-spacing: -0.04em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stat small {
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 10px;
}

.moon-card {
  margin-top: 10px;
}

.moon-system {
  position: relative;
  overflow: hidden;
  min-height: 112px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #050506;
}

.moon-orbit-line {
  position: absolute;
  top: 50%;
  right: 2%;
  left: 2%;
  height: 1px;
  background: rgba(255, 255, 255, 0.11);
}

.system-planet {
  position: absolute;
  top: 50%;
  left: 50%;
  width: max(var(--system-planet-width), 14px);
  aspect-ratio: 1 / var(--system-planet-ratio);
  border-radius: 50%;
  background: var(--system-planet-color);
  transform: translate(-50%, -50%);
}

.system-planet.jupiter {
  background: repeating-linear-gradient(
    0deg,
    #b98255 0 12%,
    #e0c59f 13% 25%,
    #8f5c43 26% 32%,
    #e9ddc4 33% 46%
  );
}

.moon-marker {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  transform: translate(-50%, -50%);
}

.moon-marker i {
  display: block;
  width: 6px;
  height: 6px;
  border: 0;
  border-radius: 50%;
  background: var(--moon-color);
  box-shadow: none;
}

.moon-marker b {
  position: absolute;
  top: 11px;
  color: #c0c0c0;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  white-space: nowrap;
}

.moon-marker.transiting i {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

.moon-marker.occulted {
  opacity: 0.22;
}

.moon-direction {
  position: absolute;
  top: 9px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.moon-east {
  left: 10px;
}

.moon-west {
  right: 10px;
}

.moon-details {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 14px;
  margin-top: 14px;
}

.moon-details > dl:only-child {
  grid-column: 1 / -1;
}

.moon-key {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--moon-color);
}

.transit-callout {
  align-self: stretch;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #080809;
  color: var(--ink);
}

.transit-callout.quiet {
  border-color: var(--line);
  background: #080809;
  color: var(--muted);
}

.transit-callout span,
.transit-callout strong,
.transit-callout p {
  display: block;
}

.transit-callout span {
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.transit-callout strong {
  margin: 5px 0;
  font-size: 19px;
}

.transit-callout p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.5;
}

.detail-card {
  padding: 16px;
  border-radius: 7px;
}

.card-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.card-title span {
  font-size: 15px;
  font-weight: 700;
}

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

dl {
  margin: 0;
}

dl > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--muted);
  font-size: 12px;
}

dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}

.card-footnote {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.5;
}

.tracking-callout {
  margin-top: 16px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #080809;
  color: var(--ink);
}

.tracking-callout.equatorial {
  background: #080809;
  color: var(--ink);
}

.tracking-callout span {
  display: block;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tracking-callout strong {
  display: block;
  margin: 5px 0;
  font-size: 20px;
  letter-spacing: -0.035em;
}

.tracking-callout p {
  margin: 0;
  font-size: 11px;
  line-height: 1.45;
}

.error-card {
  padding: 20px;
  border-radius: 6px;
}

.error-card span {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.error-card p {
  margin: 8px 0 0;
}

.pending-card span {
  color: var(--ink);
}

footer {
  padding: 24px 0 38px;
  border-top: 1px solid var(--line);
}

footer p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

footer a {
  color: var(--ink);
}

.noscript {
  margin: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-sans);
}

@media (max-width: 1060px) {
  main {
    padding: 0 22px;
  }

  .target-control-grid {
    grid-template-columns: 1fr 1fr;
  }

  .equipment-control-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .equipment-control-grid .camera-control,
  .equipment-control-grid .telescope-control {
    grid-column: 1 / -1;
  }

  .workspace-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .primary-stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 820px) {
  main {
    padding: 0 16px;
  }

  .site-header {
    min-height: 64px;
  }

  .calculator-layout {
    display: block;
  }

  .control-panel {
    position: static;
    overflow: visible;
    max-height: none;
    padding: 16px;
  }

  .results-panel {
    margin-top: 14px;
  }

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

  .fov-viewport {
    min-height: clamp(380px, 72vw, 590px);
  }
}

@media (max-width: 560px) {
  .control-panel input[type="datetime-local"] {
    min-width: 0;
    width: -webkit-fill-available;
    max-width: -webkit-fill-available;
    inline-size: -webkit-fill-available;
  }

  .target-control-grid,
  .equipment-control-grid {
    grid-template-columns: 1fr 1fr;
  }

  .target-control-grid > label,
  .target-control-grid > .location-control,
  .target-control-grid > fieldset,
  .equipment-control-grid .camera-control,
  .equipment-control-grid .telescope-control,
  .equipment-control-grid .effective-focal {
    grid-column: 1 / -1;
  }

  .time-scrubber-controls {
    flex-wrap: wrap;
  }

  .time-scrubber-controls label {
    width: 100%;
    margin: 3px 0 0;
    justify-content: space-between;
  }

  .coordinate-strip {
    grid-template-columns: 1fr 1fr;
  }

  .coordinate-strip .location-status {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }

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

  .form-grid,
  .form-grid.three {
    grid-template-columns: 1fr 1fr;
  }

  .form-grid.three label:last-child {
    grid-column: 1 / -1;
  }

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

  .preview-header {
    display: grid;
    align-items: start;
    padding: 16px;
  }

  .fov-viewport {
    min-height: 340px;
    padding: 4%;
  }

  .preview-header h2 {
    font-size: 22px;
  }

  .preview-meta {
    align-items: center;
    justify-content: space-between;
  }

  .mission-reference {
    max-width: min(230px, 72%);
  }

  .mission-reference img {
    width: 46px;
    height: 46px;
  }

  .visibility {
    padding: 6px 8px;
    font-size: 10px;
  }

  .primary-stats {
    gap: 8px;
    margin-top: 8px;
  }

  .stat {
    padding: 13px;
  }

  .stat strong {
    font-size: 20px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 8px;
  }

  .detail-card {
    padding: 17px;
  }

  .moon-details {
    grid-template-columns: 1fr;
  }

  .moon-system {
    min-height: 98px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}