/* Satalitte Physics: HUD styles.
   Operate-mode surface over a full-screen 3D view: quiet slate panels, one
   functional accent (selection, primary action, focus), status colours only
   for state. IBM Plex Sans for text, JetBrains Mono only for numbers. */

/* ================================================================== fonts */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../assets/fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../assets/fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ================================================================= tokens */
:root {
  color-scheme: dark;

  /* neutrals: cool slate */
  --bg: #07090d;
  --surface: rgba(15, 19, 26, 0.94);      /* panels: a solid layer over the scene */
  --surface-2: #1a2029;                    /* wells: inputs, segmented tracks */
  --hover: rgba(255, 255, 255, 0.055);
  --press: rgba(255, 255, 255, 0.09);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #e7eaef;
  --text-2: #aab3c0;
  --text-3: #8d97a6;

  /* one functional accent */
  --accent: #5ec4dd;
  --accent-ink: #062530;
  --accent-weak: rgba(94, 196, 221, 0.14);
  --accent-line: rgba(94, 196, 221, 0.5);

  /* state */
  --ok: #6cc59a;
  --warn: #e3a857;
  --danger: #ec6f66;
  --info: #93acf5;

  --font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-num: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* type scale (fixed, ratio ~1.15–1.3) */
  --fs-meta: 12px;
  --fs-body: 13px;
  --fs-value: 15px;
  --fs-title: 17px;
  --fs-name: 20px;

  /* spacing: 4-based */
  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 16px;
  --s5: 20px;
  --s6: 24px;
  --s8: 32px;

  --radius: 10px;
  --radius-sm: 6px;
  --gutter: 12px;
  --topbar-h: 52px;
  --dock-top: calc(var(--gutter) + var(--topbar-h) + var(--s2));
  --dock-w: clamp(300px, 22vw, 340px);
  --dock-bottom: var(--gutter);
  --tap: 32px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --ease: cubic-bezier(0.25, 1, 0.5, 1); /* ease-out-quart */
  --t-fast: 150ms;
  --t-med: 200ms;
}

*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font: 400 var(--fs-body)/1.5 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  caret-color: var(--accent);
  accent-color: var(--accent);
}
body { overscroll-behavior: none; }
::selection { background: rgba(94, 196, 221, 0.32); color: #fff; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
[hidden] { display: none !important; }
.icon { width: 16px; height: 16px; flex: none; display: block; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; letter-spacing: 0; }
.muted { color: var(--text-2); }
* { scrollbar-width: thin; scrollbar-color: rgba(255, 255, 255, 0.18) transparent; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.16); border-radius: 4px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-track { background: transparent; }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm); }

kbd {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  margin: 0 1px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--text);
  font: 500 11px/1 var(--font-num);
  vertical-align: middle;
}

/* =============================================================== viewport */
#viewport { position: fixed; inset: 0; z-index: 0; touch-action: none; background: #05070b; }
#viewport canvas { display: block; }

/* ============================================================== 3D labels */
.body-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 7px;
  border-radius: 5px;
  background: rgba(10, 13, 18, 0.78);
  color: var(--text);
  font: 500 12px/1.3 var(--font-sans);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  transition: opacity var(--t-fast);
}
.body-label .dot { width: 7px; height: 7px; flex: none; border-radius: 50%; background: currentColor; }
.body-label .name { max-width: 20ch; overflow: hidden; text-overflow: ellipsis; }
.body-label.selected { outline: 1px solid var(--accent-line); outline-offset: 0; color: #fff; background: rgba(10, 13, 18, 0.9); }
.body-label.dim { opacity: 0.5; }
.body-label.dim .name { text-decoration: line-through; text-decoration-color: rgba(255, 255, 255, 0.45); }
.body-label.orbit-marker { gap: 5px; padding: 3px 7px 3px 6px; font: 400 11px/1.3 var(--font-num); color: var(--text-2); background: rgba(10, 13, 18, 0.7); }
.body-label.orbit-marker .dot { width: 6px; height: 6px; }
.body-label.launch-readout { padding: 4px 8px; font: 500 12px/1.3 var(--font-num); color: #fff; outline: 1px solid var(--warn); background: rgba(10, 13, 18, 0.92); font-variant-numeric: tabular-nums; }
.body-label.launch-readout .dot { background: var(--warn); }
.body-label.launch-readout .name,
.body-label.orbit-marker .name { max-width: none; }

/* ============================================================ HUD overlay */
#ui, .hud { position: fixed; inset: 0; z-index: 10; pointer-events: none; } /* never swallow canvas input */
.hud > * { pointer-events: auto; }
.hud > .side-dock, .hud > .center-stack { pointer-events: none; }
.hud > .side-dock > * { pointer-events: auto; }

.panel, .topbar, .deck, .guide, .popover, .toast {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ================================================================ buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s2);
  min-height: var(--tap);
  padding: 0 var(--s3);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  font: 500 var(--fs-body)/1.2 var(--font-sans);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.btn:hover:not(:disabled) { background: var(--hover); }
.btn:active:not(:disabled) { background: var(--press); }
.btn:disabled { opacity: 0.4; }
.btn .icon { width: 15px; height: 15px; }
.btn--icon { width: var(--tap); padding: 0; }
.btn--sm { min-height: 28px; padding: 0 var(--s2); font-size: var(--fs-meta); }
.btn--quiet { border-color: transparent; color: var(--text-2); }
.btn--quiet:hover:not(:disabled) { color: var(--text); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn--primary:hover:not(:disabled) { background: #79d0e5; border-color: #79d0e5; }
.btn--primary:active:not(:disabled) { background: #4fb3cb; }
.btn--block { width: 100%; }
.btn--danger { color: var(--danger); border-color: rgba(236, 111, 102, 0.4); }
.btn--danger:hover:not(:disabled), .btn--danger.is-armed { background: rgba(236, 111, 102, 0.12); border-color: var(--danger); }
.btn--ghost { border-color: var(--line-strong); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: var(--tap);
  height: var(--tap);
  flex: none;
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-2);
  text-decoration: none;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.icon-btn .icon { width: 18px; height: 18px; }
.icon-btn:hover { background: var(--hover); color: var(--text); }
.icon-btn:active { background: var(--press); }
.icon-btn[aria-expanded="true"] { background: var(--accent-weak); color: var(--accent); }
.icon-btn--sm { width: 28px; height: 28px; }
.icon-btn--sm .icon { width: 15px; height: 15px; }
.icon-btn--danger:hover { color: var(--danger); }
.spacer { display: inline-block; width: 28px; height: 28px; }

/* segmented control */
.seg { display: inline-flex; gap: 2px; padding: 2px; border-radius: var(--radius-sm); background: var(--surface-2); }
.seg__btn {
  min-height: 28px;
  padding: 0 var(--s3);
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--text-2);
  font: 500 var(--fs-meta)/1 var(--font-sans);
  white-space: nowrap;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.seg__btn:hover { color: var(--text); background: var(--hover); }
.seg__btn[aria-pressed="true"] { background: var(--accent-weak); color: var(--accent); }

/* ================================================================ top bar */
.topbar {
  position: fixed;
  top: var(--gutter);
  left: var(--gutter);
  right: var(--gutter);
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: 0 var(--s2) 0 var(--s4);
  z-index: 20;
}
.topbar__start { display: flex; align-items: center; gap: var(--s2); min-width: 0; }
.topbar__end { display: flex; align-items: center; gap: var(--s1); margin-left: auto; }
.topbar__sep { width: 1px; height: 20px; margin: 0 var(--s2); background: var(--line-strong); }
.brand { display: inline-flex; align-items: center; gap: var(--s2); min-height: var(--tap); color: var(--text); text-decoration: none; white-space: nowrap; border-radius: var(--radius-sm); }
.brand__logo { display: grid; }
.brand__logo .logo { width: 26px; height: 26px; }
.brand__name { font: 600 15px/1 var(--font-sans); letter-spacing: -0.01em; }
.brand__sub { color: var(--text-2); font-weight: 400; }

.timegroup { display: flex; align-items: center; gap: var(--s3); margin-left: var(--s6); }
.clock { display: flex; align-items: baseline; gap: var(--s2); font-size: var(--fs-body); white-space: nowrap; }
.clock__date { color: var(--text-2); }
.clock__time { color: var(--text); font-weight: 500; }
.clock__utc { color: var(--text-3); font: 400 var(--fs-meta)/1 var(--font-sans); }
.paused-tag { color: var(--warn); font-weight: 500; }
.warp { display: flex; align-items: center; gap: 2px; }
.play { border-color: var(--line-strong); }
.timegroup.is-paused .play { color: var(--warn); border-color: rgba(227, 168, 87, 0.5); }
.warp .btn--icon { border-color: transparent; }
.warp .play { border-color: var(--line-strong); margin-right: var(--s1); }
.warp__label { display: inline-flex; flex-direction: column; align-items: center; min-width: 72px; line-height: 1.2; white-space: nowrap; cursor: default; }
.warp__mult { font-size: var(--fs-body); font-weight: 500; color: var(--text); }
.warp__rate { font-size: var(--fs-meta); color: var(--text-3); }
.limited { display: inline-flex; align-items: center; gap: 6px; color: var(--warn); font-size: var(--fs-meta); font-weight: 500; white-space: nowrap; }
.limited .icon { width: 15px; height: 15px; }
.drawer-toggle { display: none; }

/* ================================================== alert banner + toasts */
.center-stack {
  position: fixed;
  top: var(--dock-top);
  left: 50%;
  transform: translateX(-50%);
  z-index: 16;
  width: min(560px, calc(100vw - 2 * (var(--dock-w) + var(--gutter) * 2)));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s2);
}
.alert-banner {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--s2);
  max-width: 100%;
  padding: var(--s2) var(--s4);
  border-radius: var(--radius-sm);
  background: rgba(54, 40, 18, 0.95);
  border: 1px solid rgba(227, 168, 87, 0.55);
  color: #f6dfb8;
  font-size: var(--fs-body);
  font-weight: 500;
  box-shadow: var(--shadow);
}
.alert-banner__icon { color: var(--warn); }
.alert-banner[data-level="danger"] { background: rgba(60, 22, 20, 0.96); border-color: rgba(236, 111, 102, 0.6); color: #f8d0cc; }
.alert-banner[data-level="danger"] .alert-banner__icon { color: var(--danger); }
.toasts { width: min(440px, 100%); display: flex; flex-direction: column; align-items: center; gap: var(--s2); }
.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--s3);
  max-width: 100%;
  padding: var(--s2) var(--s1) var(--s2) var(--s3);
  color: var(--text);
  font-size: var(--fs-body);
  animation: toast-in var(--t-med) var(--ease);
}
.toast__icon { display: grid; color: var(--accent); }
.toast--success .toast__icon { color: var(--ok); }
.toast--warn .toast__icon { color: var(--warn); }
.toast--danger .toast__icon { color: var(--danger); }
.toast__msg { flex: 1; min-width: 0; }
.toast__close { display: grid; place-items: center; width: 28px; height: 28px; flex: none; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--text-3); }
.toast__close .icon { width: 14px; height: 14px; }
.toast__close:hover { color: var(--text); background: var(--hover); }
.toast.is-leaving { animation: toast-out 150ms var(--ease) forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-6px); } }
@keyframes toast-out { to { opacity: 0; } }

/* ============================================================== side docks */
.side-dock {
  position: fixed;
  top: var(--dock-top);
  bottom: var(--dock-bottom);
  width: var(--dock-w);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  scrollbar-width: none;
}
.side-dock::-webkit-scrollbar { display: none; }
.side-dock--left { left: var(--gutter); }
.side-dock--right { right: var(--gutter); }
.side-dock > * { flex: none; }

.panel { display: flex; flex-direction: column; padding: var(--s3) var(--s4) var(--s4); }
.panel.is-collapsed { padding-bottom: var(--s3); }
.panel__head { display: flex; align-items: center; gap: var(--s2); min-height: 28px; }
.panel__h { flex: 1; min-width: 0; margin: 0; font: 600 var(--fs-title)/1.25 var(--font-sans); }
.panel__title { font: 600 var(--fs-title)/1.25 var(--font-sans); letter-spacing: -0.01em; color: var(--text); }
.panel__toggle { display: flex; align-items: center; gap: var(--s2); width: 100%; min-height: 28px; padding: 0; border: 0; background: transparent; text-align: left; border-radius: var(--radius-sm); }
.panel__chev { color: var(--text-3); transition: transform var(--t-fast) var(--ease); }
.panel__chev .icon { width: 15px; height: 15px; }
.panel__toggle[aria-expanded="false"] .panel__chev { transform: rotate(-90deg); }
.panel__toggle:hover .panel__chev { color: var(--text); }
.panel__meta { color: var(--text-3); font-size: var(--fs-body); }
.panel__body { display: flex; flex-direction: column; gap: var(--s3); padding-top: var(--s3); }
.panel__foot { display: flex; justify-content: flex-end; }

/* ============================================================ object list */
.objlist { list-style: none; margin: 0 calc(var(--s2) * -1); padding: 0; max-height: 220px; overflow-y: auto; overscroll-behavior: contain; }
.obj { display: flex; align-items: center; gap: var(--s1); border-radius: var(--radius-sm); cursor: pointer; transition: background-color var(--t-fast) var(--ease); }
.obj:hover { background: var(--hover); }
.obj.is-selected { background: var(--accent-weak); }
.obj__main { display: flex; align-items: center; gap: var(--s3); flex: 1; min-width: 0; min-height: 36px; padding: 0 var(--s1) 0 var(--s2); border: 0; background: transparent; text-align: left; border-radius: var(--radius-sm); }
.obj__name { font-size: var(--fs-body); font-weight: 500; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.obj__kind { margin-left: auto; font-size: var(--fs-meta); color: var(--text-3); white-space: nowrap; }
.obj[data-status="suborbital"] .obj__kind { color: var(--danger); }
.obj[data-status="escaping"] .obj__kind { color: var(--info); }
.obj[data-status="impacted"] .obj__name { color: var(--text-3); text-decoration: line-through; text-decoration-color: rgba(255, 255, 255, 0.35); }
.obj[data-status="impacted"] .swatch { opacity: 0.4; }
.obj__actions { display: flex; padding-right: var(--s1); opacity: 0; transition: opacity var(--t-fast) var(--ease); }
.obj:hover .obj__actions, .obj.is-selected .obj__actions, .obj__actions:focus-within { opacity: 1; }
.swatch { --c: #8d97a6; width: 10px; height: 10px; flex: none; border-radius: 50%; background: var(--c); }
.empty-line { margin: 0; color: var(--text-2); }

/* ========================================================= selection card */
.empty { padding: var(--s1) 0 var(--s2); }
.empty__title { margin: 0 0 var(--s1); font-weight: 500; color: var(--text); }
.empty__text { margin: 0; color: var(--text-2); max-width: 36ch; }
.selcard { display: flex; flex-direction: column; gap: var(--s3); }
.ident { display: flex; align-items: center; gap: var(--s3); min-width: 0; }
.ident .swatch { width: 12px; height: 12px; }
.ident__text { min-width: 0; }
.ident__name { font: 600 var(--fs-name)/1.2 var(--font-sans); letter-spacing: -0.015em; color: #fff; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ident__sub { font-size: var(--fs-meta); color: var(--text-2); }
.status-line { --hc: var(--ok); display: grid; grid-template-columns: auto 1fr; align-items: center; column-gap: var(--s2); margin: 0; font-size: var(--fs-body); }
.status-line__dot { align-self: center; width: 8px; height: 8px; border-radius: 50%; background: var(--hc); }
.status-line__label { color: var(--hc); font-weight: 600; }
.status-line__summary { grid-column: 2; color: var(--text); }
.status-line[data-kind="warn"] { --hc: var(--warn); }
.status-line[data-kind="danger"] { --hc: var(--danger); }
.status-line[data-kind="escape"] { --hc: var(--info); }
.status-line[data-kind="impacted"] { --hc: var(--text-3); }
.status-detail { margin: calc(var(--s2) * -1) 0 0; color: var(--text-2); font-size: var(--fs-meta); }
.facts { display: flex; flex-wrap: wrap; gap: var(--s1) var(--s4); margin: 0; font-size: var(--fs-meta); color: var(--text-2); }
.facts .icon { width: 14px; height: 14px; color: var(--text-3); }
.fact { display: inline-flex; align-items: center; gap: 6px; }
.fact--ap { color: var(--text); }
.fact--ap .icon { color: var(--accent); }
.deck__ap-status { margin: 0 0 0 auto; font-size: var(--fs-meta); color: var(--text); white-space: nowrap; }
.deck__ap-status:not([hidden]) + .deck__hint { display: none; }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3) var(--s4); margin: var(--s1) 0 0; }
.stat { min-width: 0; }
.stat__label { font-size: var(--fs-meta); color: var(--text-2); }
.stat__value { margin: 2px 0 0; font-size: var(--fs-value); font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stat__unit { margin-left: 4px; font: 400 var(--fs-meta)/1 var(--font-sans); color: var(--text-2); }

.meter { display: flex; flex-direction: column; gap: 6px; }
.meter__head { display: flex; justify-content: space-between; gap: var(--s2); font-size: var(--fs-meta); color: var(--text-2); white-space: nowrap; }
.meter__head .num { color: var(--text); }
.meter__track { height: 4px; border-radius: 2px; background: var(--surface-2); overflow: hidden; }
.meter__fill { display: block; height: 100%; width: 100%; transform-origin: left; transform: scaleX(0); background: var(--text-2); transition: transform var(--t-fast) linear; }
.meter__fill--heat { background: var(--warn); }
.fuel[data-level="warn"] .meter__fill { background: var(--warn); }
.fuel[data-level="danger"] .meter__fill { background: var(--danger); }

.selcard__foot { display: flex; padding-top: var(--s1); border-top: 1px solid var(--line); }
.details-toggle { margin-left: calc(var(--s2) * -1); }
.details-toggle .icon { width: 14px; height: 14px; transition: transform var(--t-fast) var(--ease); }
.details-toggle[aria-expanded="true"] .icon { transform: rotate(180deg); }
.details.is-suppressed { display: none; }

.tabs { display: flex; gap: var(--s1); border-bottom: 1px solid var(--line); }
.tab {
  position: relative;
  min-height: 32px;
  padding: 0 var(--s2);
  border: 0;
  background: transparent;
  color: var(--text-2);
  font: 500 var(--fs-body)/1 var(--font-sans);
  white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { color: var(--text); }
.tab[aria-selected="true"]::after { content: ""; position: absolute; left: var(--s2); right: var(--s2); bottom: -1px; height: 2px; border-radius: 1px; background: var(--accent); }
.tab:focus-visible { outline-offset: -2px; }
.tabpane { padding-top: var(--s3); }

.kv { width: 100%; border-collapse: collapse; }
.kv th, .kv td { padding: 5px 0; border-bottom: 1px solid var(--line); vertical-align: baseline; }
.kv tr:last-child th, .kv tr:last-child td { border-bottom: 0; }
.kv th { text-align: left; font-weight: 400; color: var(--text-2); font-size: var(--fs-body); padding-right: var(--s3); }
.kv td { text-align: right; color: var(--text); font-size: var(--fs-body); white-space: nowrap; }

.figure { margin: 0 0 var(--s4); }
.figure:last-child { margin-bottom: 0; }
.figure figcaption { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s2); margin-bottom: 6px; font-size: var(--fs-meta); color: var(--text-2); }
.figure__meta { color: var(--text); }
.figure__note { margin: var(--s1) 0 0; font-size: var(--fs-meta); color: var(--text-3); }
.gt-canvas { display: block; width: 100%; aspect-ratio: 2 / 1; border-radius: var(--radius-sm); }
.chart-canvas { display: block; width: 100%; height: 120px; border-radius: var(--radius-sm); }
.legend { display: inline-flex; gap: var(--s3); }
.legend__solid, .legend__dash { display: inline-flex; align-items: center; gap: 6px; }
.legend__solid::before, .legend__dash::before { content: ""; width: 16px; height: 0; border-top: 2px solid var(--accent); }
.legend__dash::before { border-top: 2px dashed #c9ced6; }
.figure--nav { display: grid; grid-template-columns: 112px 1fr; gap: var(--s4); align-items: center; }
.navball { display: block; width: 112px; height: 112px; border-radius: 50%; }
.navread { margin: 0; display: grid; gap: var(--s2); }
.navread dt { font-size: var(--fs-meta); color: var(--text-2); }
.navread dd { margin: 0; color: var(--text); }

/* ================================================================ launch */
.launch { display: flex; flex-direction: column; gap: var(--s3); }
.ltabs { display: flex; gap: 2px; padding: 2px; border-radius: var(--radius-sm); background: var(--surface-2); }
.ltab { flex: 1; min-height: 28px; border: 0; border-radius: 5px; background: transparent; color: var(--text-2); font: 500 var(--fs-body)/1 var(--font-sans); }
.ltab:hover { color: var(--text); }
.ltab[aria-selected="true"] { background: var(--accent-weak); color: var(--accent); }
.launch__pane { display: flex; flex-direction: column; }
.group-title { margin: var(--s2) 0 var(--s1); font: 500 var(--fs-meta)/1.3 var(--font-sans); color: var(--text-3); }
.group-title:first-child { margin-top: 0; }
.missions { list-style: none; margin: 0 calc(var(--s2) * -1); padding: 0; }
.mission {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "name go" "desc go";
  column-gap: var(--s3);
  width: 100%;
  padding: 6px var(--s2);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  text-align: left;
  transition: background-color var(--t-fast) var(--ease);
}
.mission:hover { background: var(--hover); }
.mission:active { background: var(--press); }
.mission__name { grid-area: name; font-weight: 500; color: var(--text); }
.mission__desc { grid-area: desc; font-size: var(--fs-meta); color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mission__go { grid-area: go; align-self: center; color: var(--text-3); opacity: 0; transition: opacity var(--t-fast) var(--ease), color var(--t-fast) var(--ease); }
.mission:hover .mission__go, .mission:focus-visible .mission__go { opacity: 1; color: var(--accent); }

.custom-launch { display: flex; flex-direction: column; gap: var(--s4); }
.field { display: flex; flex-direction: column; gap: 6px; }
.field__row { display: flex; align-items: center; justify-content: space-between; gap: var(--s2); }
.field label { font-size: var(--fs-body); color: var(--text-2); }
.field__help { margin: 0; font-size: var(--fs-meta); color: var(--text-3); }
.field--inline { flex-direction: row; align-items: center; justify-content: space-between; }
.out { font: 400 var(--fs-body)/1 var(--font-num); color: var(--text); font-variant-numeric: tabular-nums; }
.num-wrap { display: inline-flex; align-items: center; gap: 6px; }
.unit { font-size: var(--fs-meta); color: var(--text-3); }
.num-wrap .num, input.num {
  width: 100px;
  height: 30px;
  padding: 0 var(--s2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  font: 400 var(--fs-body)/1 var(--font-num);
  text-align: right;
}
input.num--sm { width: 80px; }
input.num:hover:not(:disabled) { border-color: rgba(255, 255, 255, 0.26); }
input.num:focus-visible { outline-offset: 0; border-color: var(--accent); }
input.num:disabled { opacity: 0.4; }

.range { -webkit-appearance: none; appearance: none; width: 100%; height: 24px; margin: 0; background: transparent; cursor: pointer; }
.range:disabled { opacity: 0.4; cursor: not-allowed; }
.range::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: rgba(255, 255, 255, 0.16); }
.range::-moz-range-track { height: 4px; border-radius: 2px; background: rgba(255, 255, 255, 0.16); }
.range::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--text-2); }
.range::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%; border: 2px solid var(--bg); background: var(--text); transition: background-color var(--t-fast); }
.range::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--bg); background: var(--text); }
.range:hover:not(:disabled)::-webkit-slider-thumb { background: #fff; }
.range:active::-webkit-slider-thumb { background: var(--accent); }
.range:focus-visible { outline-offset: 2px; }

.ticks { position: relative; height: 16px; margin-top: -4px; }
.ticks span { position: absolute; top: 0; transform: translateX(-50%); font-size: var(--fs-meta); color: var(--text-3); white-space: nowrap; }
.chips { display: flex; flex-wrap: wrap; gap: var(--s1); }
.chip { min-height: 26px; padding: 0 var(--s2); border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: transparent; color: var(--text-2); font-size: var(--fs-meta); transition: background-color var(--t-fast), color var(--t-fast); }
.chip:hover { color: var(--text); background: var(--hover); }
.check { display: inline-flex; align-items: center; gap: var(--s2); min-height: 30px; cursor: pointer; }
.switch { -webkit-appearance: none; appearance: none; position: relative; width: 32px; height: 18px; margin: 0; flex: none; border-radius: 9px; background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--line-strong); cursor: pointer; transition: background-color var(--t-fast); }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 12px; height: 12px; border-radius: 50%; background: var(--text-2); transition: transform var(--t-fast) var(--ease), background-color var(--t-fast); }
.switch:checked { background: var(--accent-weak); box-shadow: inset 0 0 0 1px var(--accent-line); }
.switch:checked::after { transform: translateX(14px); background: var(--accent); }

.hint { --hc: var(--ok); display: flex; flex-direction: column; gap: 2px; padding-top: var(--s3); border-top: 1px solid var(--line); }
.hint[data-kind="warn"] { --hc: var(--warn); }
.hint[data-kind="danger"] { --hc: var(--danger); }
.hint[data-kind="escape"] { --hc: var(--info); }
.hint__row { display: flex; align-items: center; gap: var(--s2); margin: 0; }
.hint__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--hc); }
.hint__label { color: var(--hc); font-weight: 600; }
.hint__main { color: var(--text); font-size: var(--fs-body); }
.hint__sub { font-size: var(--fs-meta); color: var(--text-2); }

.tip { display: flex; gap: var(--s2); margin: 0; padding-top: var(--s3); border-top: 1px solid var(--line); font-size: var(--fs-meta); color: var(--text-2); line-height: 1.6; }
.tip__icon { color: var(--text-3); flex: none; margin-top: 2px; }
.tip__icon .icon { width: 15px; height: 15px; }
.tip strong { color: var(--text); font-weight: 500; }

/* ============================================== right panel: two views */
.panel--views .panel__head { min-height: 32px; }
.viewtabs { display: flex; gap: var(--s4); }
.viewtab {
  position: relative;
  padding: 2px 0 6px;
  border: 0;
  background: transparent;
  color: var(--text-3);
  font: 600 var(--fs-title)/1.25 var(--font-sans);
  letter-spacing: -0.01em;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}
.viewtab:hover { color: var(--text-2); }
.viewtab[aria-selected="true"] { color: var(--text); }
.viewtab[aria-selected="true"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 1px; background: var(--accent); }
.viewtab:focus-visible { outline-offset: 2px; }

/* ======================================================== real satellites */
.catalog { display: flex; flex-direction: column; gap: var(--s3); }
.catalog__intro { margin: 0; color: var(--text-2); font-size: var(--fs-meta); }
.search { display: flex; flex-direction: column; gap: 6px; }
.search__label { font-size: var(--fs-body); color: var(--text-2); }
.search__input {
  height: 34px;
  padding: 0 var(--s3);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  font: 400 var(--fs-body)/1 var(--font-sans);
  transition: border-color var(--t-fast) var(--ease);
}
.search__input::placeholder { color: var(--text-3); }
.search__input:hover { border-color: rgba(255, 255, 255, 0.26); }
.search__input:focus-visible { outline-offset: 0; border-color: var(--accent); }
.search__hint { margin: 0; font-size: var(--fs-meta); color: var(--text-3); }
.results-wrap { display: flex; flex-direction: column; gap: var(--s1); }
.results__note { margin: 0; font-size: var(--fs-meta); color: var(--text-2); }
.results { list-style: none; margin: 0 calc(var(--s2) * -1); padding: 0; }
.result {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas: "dot name" ". meta";
  column-gap: var(--s2);
  align-items: center;
  width: 100%;
  padding: 6px var(--s2);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  text-align: left;
  transition: background-color var(--t-fast) var(--ease);
}
.result:hover { background: var(--hover); }
.result:active { background: var(--press); }
.result .swatch { grid-area: dot; width: 8px; height: 8px; }
.result__name { grid-area: name; font-weight: 500; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.result__meta { grid-area: meta; font-size: var(--fs-meta); color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.catgroups { list-style: none; margin: 0 calc(var(--s2) * -1); padding: 0; }
.catgroup { display: flex; align-items: center; gap: var(--s2); padding-right: var(--s2); border-radius: var(--radius-sm); transition: background-color var(--t-fast) var(--ease); }
.catgroup:hover { background: var(--hover); }
.catgroup__main { display: grid; grid-template-columns: auto 1fr auto; grid-template-areas: "dot name count" ". state state"; column-gap: var(--s3); align-items: center; flex: 1; min-width: 0; min-height: 36px; padding: 6px var(--s2); cursor: pointer; }
.catgroup .swatch { grid-area: dot; }
.catgroup:not(.is-on) .swatch { opacity: 0.45; }
.catgroup__name { grid-area: name; color: var(--text); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.catgroup:not(.is-on) .catgroup__name { color: var(--text-2); font-weight: 400; }
.catgroup__count { grid-area: count; font-size: var(--fs-meta); color: var(--text-3); }
.catgroup__state { grid-area: state; font-size: var(--fs-meta); color: var(--text-2); }
.catgroup__state[data-kind="error"] { color: var(--danger); }
.source { margin: 0; padding-top: var(--s3); border-top: 1px solid var(--line); font-size: var(--fs-meta); color: var(--text-3); }

.real { display: flex; flex-direction: column; gap: var(--s3); }
.real-age { margin: 0; font-size: var(--fs-meta); color: var(--text-2); }
.real-age.is-stale { color: var(--warn); }
.real__action { display: flex; flex-direction: column; gap: 6px; }
.real__help { margin: 0; font-size: var(--fs-meta); color: var(--text-2); }

/* ======================================================= settings popover */
.popover {
  position: fixed;
  top: var(--dock-top);
  right: var(--gutter);
  z-index: 30;
  width: min(340px, calc(100vw - 2 * var(--gutter)));
  max-height: calc(100dvh - var(--dock-top) - var(--gutter));
  overflow-y: auto;
  padding: var(--s3) var(--s4) var(--s4);
  background: #10141b;
  border: 1px solid var(--line-strong);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}
.popover__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--s2); }
.popover__title { margin: 0; font: 600 var(--fs-title)/1.25 var(--font-sans); }
.popover__foot { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); margin-top: var(--s3); padding-top: var(--s3); border-top: 1px solid var(--line); }
.popover__note { margin: 0; font-size: var(--fs-meta); color: var(--text-3); }

/* lil-gui themed to the HUD */
.settings-host { margin: 0 calc(var(--s1) * -1); }
.settings-host .lil-gui {
  --background-color: transparent;
  --text-color: var(--text);
  --title-background-color: transparent;
  --title-text-color: var(--text-2);
  --widget-color: var(--surface-2);
  --hover-color: #232a35;
  --focus-color: #28303c;
  --number-color: var(--text);
  --string-color: var(--text);
  --font-family: var(--font-sans);
  --font-family-mono: var(--font-num);
  --font-size: 13px;
  --input-font-size: 13px;
  --padding: 4px;
  --spacing: 4px;
  --widget-height: 26px;
  --name-width: 50%;
  --slider-knob-width: 2px;
  --slider-input-width: 30%;
  --slider-input-min-width: 52px;
  --widget-border-radius: 5px;
  --checkbox-size: 18px;
  --folder-indent: 0px;
}
.settings-host .lil-gui.lil-root { width: 100%; }
.settings-host .lil-gui.lil-root > .lil-title { display: none; }
.settings-host .lil-gui .lil-gui > .lil-title {
  height: 32px;
  line-height: 32px;
  padding: 0 var(--s1);
  border: 0;
  background: transparent;
  color: var(--text-3);
  font: 500 var(--fs-meta)/32px var(--font-sans);
}
.settings-host .lil-gui .lil-gui:not(:first-child) > .lil-title { margin-top: var(--s2); }
.settings-host .lil-gui .lil-gui > .lil-children { border-left: 0; padding-left: 0; }
.settings-host .lil-gui .lil-title:hover { color: var(--text); }
.settings-host .lil-controller { min-height: 32px; border-radius: var(--radius-sm); }
.settings-host .lil-controller:hover { background: rgba(255, 255, 255, 0.03); }
.settings-host .lil-controller .lil-name { color: var(--text-2); }
.settings-host .lil-controller.lil-boolean input {
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  width: 32px;
  height: 18px;
  border-radius: 9px;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line-strong);
  cursor: pointer;
}
.settings-host .lil-controller.lil-boolean input::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: var(--text-2);
  transform: none;
  transition: transform var(--t-fast) var(--ease), background-color var(--t-fast);
}
.settings-host .lil-controller.lil-boolean input::before, .settings-host .lil-controller.lil-boolean input:checked::before { content: none; display: none; }
.settings-host .lil-controller.lil-boolean input:checked { background: var(--accent-weak); box-shadow: inset 0 0 0 1px var(--accent-line); }
.settings-host .lil-controller.lil-boolean input:checked::after { transform: translateX(14px); background: var(--accent); }
.settings-host .lil-controller .lil-fill { border-right-color: var(--text); background: rgba(255, 255, 255, 0.08); }
.settings-host .lil-controller input:focus-visible,
.settings-host .lil-controller select:focus-visible + .lil-display,
.settings-host .lil-slider:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.settings-host .lil-controller input[type="text"], .settings-host .lil-controller input[type="number"] { font-family: var(--font-num); font-variant-numeric: tabular-nums; }

/* ============================================================ flight deck */
.deck {
  position: fixed;
  bottom: var(--gutter);
  left: 50%;
  transform: translateX(-50%);
  z-index: 12;
  width: min(744px, calc(100vw - 2 * var(--gutter)));
  padding: var(--s3) var(--s4) var(--s4);
}
.deck.is-firing { box-shadow: var(--shadow), inset 0 0 0 1px rgba(227, 168, 87, 0.45); }
.deck__head { display: flex; align-items: center; gap: var(--s3); margin-bottom: var(--s3); }
.deck__ctl { display: flex; align-items: center; gap: var(--s2); margin: 0; min-width: 0; }
.deck__ctl-label { color: var(--text-2); }
.deck__ctl strong { font: 600 var(--fs-value)/1.2 var(--font-sans); color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.deck__hint { margin-left: auto; font-size: var(--fs-meta); color: var(--text-3); white-space: nowrap; }
.ap-toggle { display: none; }
.ap-toggle .icon { width: 14px; height: 14px; transition: transform var(--t-fast) var(--ease); }
.ap-toggle[aria-expanded="true"] .icon { transform: rotate(180deg); }
.deck__body { display: grid; grid-template-columns: auto 1fr; gap: var(--s5); }
.deck__pad { display: flex; flex-direction: column; gap: var(--s2); }
.pad { display: grid; grid-template-columns: repeat(3, 88px); grid-auto-rows: 48px; gap: 6px; touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.burn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  font: 500 var(--fs-meta)/1.2 var(--font-sans);
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.burn__icon { color: var(--text-2); line-height: 0; }
.burn__icon .icon { width: 16px; height: 16px; }
.burn__key { position: absolute; top: 4px; right: 4px; min-width: 16px; height: 16px; padding: 0 3px; font-size: 11px; color: var(--text-2); border-color: var(--line); background: transparent; }
.burn:hover:not(:disabled) { background: var(--hover); border-color: rgba(255, 255, 255, 0.26); }
.burn.firing, .burn:active:not(:disabled) { background: rgba(227, 168, 87, 0.16); border-color: var(--warn); }
.burn.firing .burn__icon { color: var(--warn); }
.burn:disabled { opacity: 0.4; }
.deck__ap { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: var(--s4); min-width: 0; }
.deck__sliders, .deck__actions { display: flex; flex-direction: column; gap: var(--s3); min-width: 0; }
.deck__actions { gap: var(--s2); }
.slider { display: flex; flex-direction: column; gap: 2px; }
.slider__top { display: flex; justify-content: space-between; gap: var(--s2); font-size: var(--fs-meta); color: var(--text-2); }
.slider__top .num { color: var(--text); }
.btn--action { flex-direction: column; align-items: flex-start; gap: 1px; min-height: 44px; padding: 5px var(--s3); text-align: left; white-space: normal; }
.btn__label { font-weight: 500; }
.btn__help { font-size: var(--fs-meta); color: var(--text-2); font-weight: 400; line-height: 1.3; }
.btn--action.is-short .btn__help { color: var(--warn); }

/* ========================================================= first-run guide */
.guide {
  position: fixed;
  left: 50%;
  bottom: var(--gutter);
  transform: translateX(-50%);
  z-index: 12;
  display: flex;
  align-items: center;
  gap: var(--s4);
  width: min(760px, calc(100vw - 2 * (var(--dock-w) + var(--gutter) * 2)));
  padding: var(--s3) var(--s3) var(--s3) var(--s4);
}
.guide__steps { display: flex; gap: var(--s4); flex: 1; margin: 0; padding: 0; list-style: none; counter-reset: step; font-size: var(--fs-body); color: var(--text-2); }
.guide__steps li { flex: 1; counter-increment: step; display: grid; grid-template-columns: auto 1fr; column-gap: var(--s2); align-items: baseline; }
.guide__steps span { grid-column: 2; }
.guide__steps li::before { content: counter(step); grid-row: span 2; align-self: start; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--surface-2); color: var(--text); font: 500 var(--fs-meta)/1 var(--font-num); }
.guide__steps strong { color: var(--text); font-weight: 600; }

/* ================================================================= modal */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: var(--s4); opacity: 0; transition: opacity var(--t-med) var(--ease); }
.modal.is-open { opacity: 1; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(4, 6, 9, 0.7); }
.modal__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(820px, 100%);
  max-height: min(780px, calc(100dvh - 32px));
  background: #0f131a;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
}
.modal__head { flex: none; display: flex; align-items: center; justify-content: space-between; gap: var(--s3); padding: var(--s3) var(--s3) 0 var(--s6); }
.modal__title { display: flex; align-items: center; gap: var(--s3); min-width: 0; }
.modal__title h2 { margin: 0; font: 600 20px/1.3 var(--font-sans); letter-spacing: -0.015em; }
.modal__logo .logo { width: 26px; height: 26px; display: block; }
.modal .tabs { flex: none; padding: var(--s2) var(--s6) 0; overflow-x: auto; scrollbar-width: none; }
.modal .tab { min-height: 40px; }
.modal__body { overflow-y: auto; padding: var(--s6); overscroll-behavior: contain; }
.tabpanel:focus-visible { outline-offset: 6px; }

.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s8) var(--s6); }
.help-card { min-width: 0; }
.help-card--wide { grid-column: 1 / -1; }
.help-card h3 { display: flex; align-items: center; gap: var(--s2); margin: 0 0 var(--s3); font: 600 15px/1.3 var(--font-sans); color: var(--text); }
.help-card h3 .icon { color: var(--text-3); }
.keys { display: grid; grid-template-columns: max-content 1fr; gap: var(--s2) var(--s4); margin: 0; }
.keys dt { color: var(--text); font-weight: 500; white-space: nowrap; }
.keys dd { margin: 0; color: var(--text-2); }
.keys--cols { grid-template-columns: max-content 1fr max-content 1fr; }
.kbd-sep { color: var(--text-3); margin: 0 2px; }
.help-note { margin: var(--s4) 0 0; color: var(--text-2); max-width: 75ch; }
.help-note em { color: var(--text); font-style: normal; font-weight: 500; }

.prose { max-width: 68ch; font-size: 15px; line-height: 1.65; color: var(--text-2); }
.prose h3 { margin: var(--s6) 0 var(--s1); font: 600 16px/1.35 var(--font-sans); color: var(--text); text-wrap: balance; }
.prose p { margin: 0 0 var(--s3); text-wrap: pretty; }
.prose em { color: var(--text); font-style: normal; font-weight: 500; }
.prose .lede { font-size: 17px; color: var(--text); }
.eq { color: var(--text); font-variant-numeric: tabular-nums; white-space: nowrap; font-style: italic; }

.link-groups { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s6) var(--s8); }
.link-group h3 { margin: 0 0 var(--s2); font: 600 15px/1.3 var(--font-sans); color: var(--text); }
.link-group ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.link-group a { display: flex; align-items: center; justify-content: space-between; gap: var(--s2); min-height: 36px; padding: 6px 0; border-bottom: 1px solid var(--line); color: var(--text); text-decoration: none; }
.link-group a .icon { width: 14px; height: 14px; color: var(--text-3); flex: none; }
.link-group a:hover { color: var(--accent); }
.link-group a:hover .icon { color: var(--accent); }

.about-hero { display: flex; align-items: center; gap: var(--s3); margin-bottom: var(--s4); }
.about-hero .logo { width: 44px; height: 44px; }
.about-hero div { display: flex; flex-direction: column; }
.about-hero strong { font: 600 18px/1.3 var(--font-sans); color: var(--text); }
.about-hero span { color: var(--text-2); font-size: var(--fs-body); }
.about-links { display: flex; flex-wrap: wrap; gap: var(--s2); margin: var(--s4) 0 !important; }

/* ======================================================== loader / fatal */
.loader { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: var(--bg); transition: opacity var(--t-med) var(--ease), visibility 0s linear var(--t-med); }
.loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader__card { display: flex; flex-direction: column; align-items: center; gap: var(--s4); width: min(300px, 80vw); }
.loader__brand { display: flex; align-items: center; gap: var(--s2); }
.loader__brand .logo { width: 28px; height: 28px; }
.loader__name { font: 600 16px/1 var(--font-sans); }
.loader__bar { width: 100%; height: 3px; border-radius: 2px; background: var(--surface-2); overflow: hidden; }
.loader__fill { display: block; height: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--t-med) var(--ease); }
.loader__label { margin: 0; min-height: 1.5em; color: var(--text-2); font-size: var(--fs-body); }

.fatal { position: fixed; inset: 0; z-index: 110; display: grid; place-items: center; padding: var(--s4); background: rgba(4, 6, 9, 0.92); }
.fatal__card { width: min(480px, 100%); padding: var(--s6); border: 1px solid var(--line-strong); border-radius: 12px; background: #0f131a; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6); }
.fatal__title { display: flex; align-items: center; gap: var(--s2); margin: 0 0 var(--s2); font: 600 19px/1.3 var(--font-sans); }
.fatal__icon { color: var(--danger); display: grid; }
.fatal__icon .icon { width: 20px; height: 20px; }
.fatal__msg { margin: 0 0 var(--s3); color: var(--text-2); overflow-wrap: anywhere; }
.fatal__tips { margin: 0 0 var(--s4); padding-left: 1.2em; color: var(--text-2); }
.fatal__tips li { margin: var(--s1) 0; }
.fatal__actions { display: flex; flex-wrap: wrap; gap: var(--s2); }

.scrim { position: fixed; inset: 0; z-index: 25; background: rgba(4, 6, 9, 0.5); }

/* ============================================================ responsive */
@media (max-width: 1399.98px) {
  .clock__date { display: none; }
}
@media (max-width: 1279.98px) {
  /* keep the docks clear of the flight controls / guide */
  :root { --dock-w: clamp(280px, 28vw, 320px); }
  /* deck and guide sit in the gap between the docks */
  .guide { width: calc(100vw - 2 * (var(--dock-w) + var(--gutter) * 2)); flex-direction: column; align-items: stretch; }
  .guide__steps { flex-direction: column; gap: var(--s2); }
  .guide .btn { align-self: flex-end; }
  .deck { max-width: calc(100vw - 2 * (var(--dock-w) + var(--gutter) * 2)); }
  .pad { grid-template-columns: repeat(3, minmax(0, 92px)); }
  .deck__hint { display: none; }
  /* autopilot folds behind a toggle so the deck stays short */
  .ap-toggle { display: inline-flex; }
  .deck__body { grid-template-columns: auto; }
  .deck__ap { display: none; }
  .deck.ap-open .deck__ap { display: grid; }
  .deck { width: auto; min-width: 0; }
  .warp__rate { display: none; }
  .warp__label { min-width: 56px; }
  .timegroup { margin-left: var(--s2); }
}
@media (max-width: 1099.98px) {
  .brand__sub { display: none; }
  .limited__text { display: none; }
}

@media (max-width: 819.98px) {
  :root { --topbar-h: 96px; --dock-w: min(380px, calc(100vw - 2 * var(--gutter))); --tap: 40px; }
  .hud.has-deck, .hud:not(.has-deck) { --dock-bottom: var(--gutter); }
  .topbar { flex-wrap: wrap; align-content: center; row-gap: var(--s1); column-gap: var(--s2); padding: var(--s1) var(--s1) var(--s1) var(--s2); }
  .topbar__start { flex: 1; }
  .topbar__end { margin-left: 0; gap: 0; }
  .topbar__sep { display: none; }
  .timegroup { order: 3; flex-basis: 100%; margin-left: 0; justify-content: space-between; gap: var(--s2); }
  .drawer-toggle { display: inline-grid; }
  .hide-narrow { display: none !important; }
  .icon-btn { width: 40px; height: 40px; }
  .side-dock {
    z-index: 30;
    transform: translateX(calc(-100% - 2 * var(--gutter)));
    visibility: hidden;
    transition: transform var(--t-med) var(--ease), visibility 0s linear var(--t-med);
  }
  .side-dock--right { transform: translateX(calc(100% + 2 * var(--gutter))); }
  .side-dock.is-open { transform: none; visibility: visible; transition: transform var(--t-med) var(--ease); }
  .camstrip { flex-direction: row; align-items: center; justify-content: space-between; gap: var(--s3); padding: var(--s2) var(--s2) var(--s2) var(--s4); }
  .camstrip__label { color: var(--text-2); }
  .topbar__end .camgroup { display: inline-flex; }
  .center-stack { width: calc(100vw - 2 * var(--gutter)); }

  .deck { width: auto; max-width: none; left: var(--gutter); right: var(--gutter); transform: none; bottom: calc(var(--gutter) + env(safe-area-inset-bottom, 0px)); padding: var(--s3); }
  .deck__head { margin-bottom: var(--s2); flex-wrap: wrap; row-gap: 2px; }
  .deck__ap-status { order: 3; flex-basis: 100%; margin-left: 0; }
  .deck__hint { display: none; }
  .ap-toggle { display: inline-flex; margin-left: auto; }
  .deck__body { grid-template-columns: 1fr; gap: var(--s3); }
  .pad { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-auto-rows: 48px; }
  .deck__ap { display: none; grid-template-columns: 1fr; }
  .deck.ap-open .deck__ap { display: grid; }
  .guide { width: auto; max-width: none; left: var(--gutter); right: var(--gutter); transform: none; flex-direction: column; align-items: stretch; }
  .guide__steps { flex-direction: column; gap: var(--s2); }
  .guide .btn { align-self: flex-end; }

  .help-grid, .link-groups { grid-template-columns: 1fr; }
  .keys--cols { grid-template-columns: max-content 1fr; }
  .modal { padding: var(--s2); }
  .modal__body { padding: var(--s4); }
  .modal .tabs { padding: var(--s1) var(--s4) 0; }
  .modal__head { padding-left: var(--s4); }
}

@media (max-width: 400px) {
  .warp__label { min-width: 48px; }
  .clock__utc { display: none; }
}

@media (pointer: coarse) {
  :root { --tap: 40px; }
  .obj__main { min-height: 44px; }
  .obj__actions { opacity: 1; }
  .icon-btn--sm, .spacer { width: 40px; height: 40px; }
  .mission { padding: var(--s2); }
  .ltab, .seg__btn { min-height: 36px; }
  .chip { min-height: 36px; }
  .btn--sm { min-height: 36px; }
  .settings-host .lil-gui { --widget-height: 32px; }
  .settings-host .lil-controller { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  /* keep state changes (colour, opacity) but drop movement */
  .side-dock, .side-dock.is-open { transition: visibility 0s; }
  .toast, .toast.is-leaving { animation: none; }
  .modal, .loader { transition-duration: 0s; }
  .panel__chev, .details-toggle .icon, .ap-toggle .icon, .switch::after, .settings-host .lil-controller.lil-boolean input::after { transition: none; }
  .meter__fill, .loader__fill { transition: none; }
}

@media (forced-colors: active) {
  .panel, .topbar, .deck, .toast, .popover, .guide, .modal__dialog { border: 1px solid CanvasText; }
  .seg__btn[aria-pressed="true"], .obj.is-selected, .burn.firing, .ltab[aria-selected="true"] { outline: 2px solid Highlight; }
}

/* ======================================================= perf overlay (?perf=1) */
.perf-overlay {
  position: fixed;
  top: var(--dock-top);
  right: calc(var(--dock-w) + var(--gutter) * 2);
  z-index: 15;
  display: grid;
  grid-template-columns: repeat(2, auto auto);
  column-gap: var(--s3);
  row-gap: 1px;
  padding: var(--s2) var(--s3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-3);
  font: 400 11px/1.35 var(--font-num);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  user-select: none;
}
.perf-overlay__row { display: contents; }
.perf-overlay__head { grid-column: 1 / -1; max-width: 44ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-2); }
.perf-overlay__val { min-width: 6ch; color: var(--text-2); text-align: right; }
@media (max-width: 819px) {
  .perf-overlay { right: var(--gutter); }
}