/* Final Approach — a modern radar room. Dark scope with a soft phosphor green, amber for
   attention, red only for trouble. Light theme: the tower cab by day. Inter for words,
   JetBrains Mono for callsigns, times and tags. */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin-700-normal.woff2') format('woff2');
}

:root {
  color-scheme: light;
  --bg: #eef2f0;
  --panel: #ffffff;
  --ink: #12201b;
  --ink-2: #4f5f58;
  --line: #cfd9d4;
  --scope: #dfe9e4;
  --phosphor: #0f7a4e;
  --amber: #8a4a00;
  --red: #c0262d;
  --heavy: #3d56c4;
  --medium: #0f7a4e;
  --light: #8a4a00;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --gutter: clamp(1rem, 5vw, 1.75rem);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #070d0b;
    --panel: #0e1714;
    --ink: #d8f3e6;
    --ink-2: #86a99a;
    --line: #1e2e28;
    --scope: #0a1411;
    --phosphor: #4ef0a2;
    --amber: #ffb547;
    --red: #ff5a5f;
    --heavy: #8ea2ff;
    --medium: #4ef0a2;
    --light: #ffb547;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem/1.5 var(--sans);
}
a {
  color: inherit;
  text-underline-offset: 0.15em;
}
.hub {
  padding: 0.75rem var(--gutter) 0;
  font: 400 0.875rem/1.4 var(--mono);
}
.hub a {
  color: var(--ink-2);
  text-decoration: none;
}
.hub a:hover {
  text-decoration: underline;
}
.wrap {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1rem var(--gutter) 2rem;
}
.title {
  margin: 0;
  font: 800 clamp(2rem, 8vw, 2.75rem) / 1 var(--sans);
  letter-spacing: -0.02em;
}
.title .dot {
  color: var(--phosphor);
}
.status {
  font-family: var(--mono);
  color: var(--ink-2);
}
.prose h2 {
  margin: 1.75rem 0 0.5rem;
  font: 700 1.125rem/1.3 var(--sans);
}
.prose p {
  max-width: 62ch;
}
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding: 1rem var(--gutter) 2rem;
  max-width: 40rem;
  margin: 0 auto;
  font: 400 0.875rem/1.4 var(--mono);
  color: var(--ink-2);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- the game */

.head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.icon-btn {
  width: 2.5rem;
  height: 2.5rem;
  border: 1.5px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--ink);
  font: 700 1.125rem/1 var(--sans);
  cursor: pointer;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0 1.1rem;
  border: 0;
  border-radius: 999px;
  background: var(--phosphor);
  color: var(--bg);
  font: 700 1rem/1 var(--sans);
  cursor: pointer;
}
.btn.big {
  min-height: 3.25rem;
  padding: 0 1.6rem;
  font-size: 1.125rem;
}
.btn.quiet {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}
.btn.tiny {
  min-height: 2.25rem;
  padding: 0 0.75rem;
  font-size: 0.875rem;
}
.btn:disabled {
  opacity: 0.5;
  cursor: default;
}
.btn:focus-visible,
.icon-btn:focus-visible,
.card:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}
.kicker {
  margin: 1rem 0 0.25rem;
  font: 400 0.8125rem/1.3 var(--mono);
  color: var(--ink-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Before day 1: the teaser. A scope with a slow sweep and one blip, the copy, the countdown. */
.teaser {
  margin-top: 0.5rem;
}
.blip {
  position: relative;
  width: 9rem;
  height: 9rem;
  margin: 0.5rem 0 1rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 32%, var(--line) 33%, transparent 34%),
    radial-gradient(circle, transparent 65%, var(--line) 66%, transparent 67%), var(--scope);
  overflow: hidden;
}
.blip::before {
  content: '';
  position: absolute;
  inset: 0;
  background: conic-gradient(
    from 0deg,
    transparent 0 80%,
    color-mix(in srgb, var(--phosphor) 45%, transparent) 100%
  );
  animation: sweep 4s linear infinite;
}
.blip::after {
  content: '';
  position: absolute;
  top: 28%;
  left: 64%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--phosphor);
  box-shadow: 0 0 8px var(--phosphor);
  animation: ping 4s linear infinite;
}
@keyframes sweep {
  to {
    transform: rotate(1turn);
  }
}
@keyframes ping {
  0%,
  8% {
    opacity: 1;
  }
  60%,
  100% {
    opacity: 0.15;
  }
}
@media (prefers-reduced-motion: reduce) {
  .blip::before,
  .blip::after {
    animation: none;
  }
}
.teaser-text {
  max-width: 30rem;
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
}
.countdown {
  margin: 1.25rem 0 0;
  font: 400 0.9375rem/1.5 var(--mono);
  color: var(--ink-2);
}
.countdown strong {
  display: block;
  font: 700 2.25rem/1.2 var(--mono);
  color: var(--phosphor);
  font-variant-numeric: tabular-nums;
}

/* The briefing */
.airport {
  margin: 0 0 0.75rem;
  font: 800 clamp(1.75rem, 7vw, 2.25rem) / 1.05 var(--sans);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}
.chips li {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  font: 400 0.8125rem/1.3 var(--mono);
}
.brief-text {
  color: var(--ink-2);
}

/* The arrival manager: a timeline, time running down, one column per runway */
.planner {
  padding-bottom: 10rem; /* room above the dock */
}
.changes {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0.75rem 0 0;
  font: 400 0.75rem/1.3 var(--mono);
  color: var(--amber);
}
.switch {
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--amber);
  border-radius: 999px;
  background: transparent;
  color: var(--amber);
  font: 700 0.75rem/1.2 var(--mono);
  cursor: pointer;
}
.switch[aria-pressed='true'] {
  background: color-mix(in srgb, var(--amber) 22%, transparent);
  color: var(--ink);
}
.switch:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.9rem;
  margin: 0.6rem 0 0.4rem;
  font: 400 0.6875rem/1.3 var(--mono);
  color: var(--ink-2);
}
.lg {
  display: inline-block;
  margin-right: 0.3rem;
  vertical-align: -1px;
}
.lg.due {
  width: 7px;
  height: 7px;
  border: 1.5px solid var(--ink);
  transform: rotate(45deg);
}
.lg.fly,
.lg.wait,
.lg.hold {
  width: 0;
  height: 11px;
  border-left: 2px solid var(--ink-2);
}
.lg.fly {
  border-left-style: dotted;
}
.lg.hold {
  border-left-color: var(--amber);
}
.tl {
  display: grid;
  grid-template-columns: 2.2rem repeat(auto-fit, minmax(0, 1fr));
  grid-auto-flow: column;
  gap: 0.35rem;
}
.tl-head-space,
.lane-head {
  height: 2.25rem;
}
.tl-scale {
  position: relative;
}
.tl-time {
  position: absolute;
  left: 0;
  transform: translateY(-50%);
  font: 400 0.625rem/1 var(--mono);
  color: var(--ink-2);
}
.tl-time.wind {
  transform: translateY(3px);
  font-size: 0.5625rem;
  color: var(--amber);
}
.lane {
  position: relative;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--scope);
}
.lane-head {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  align-items: center;
  padding: 0 0.5rem;
  border-bottom: 1px solid var(--line);
  border-radius: 10px 10px 0 0;
  background: var(--panel);
}
.rwy {
  font: 700 0.875rem/1 var(--mono);
  color: var(--phosphor);
  white-space: nowrap;
}
.tl-body {
  position: relative;
}
.tl-body > * {
  position: absolute;
}
.tl-tick {
  left: 0;
  right: 0;
  border-top: 1px solid var(--line);
}
.tl-wind {
  left: 0;
  right: 0;
  z-index: 1;
  border-top: 1.5px dashed var(--amber);
}
.band {
  left: 0;
  right: 0;
  z-index: 1;
  margin: 0;
  padding: 0;
  border: 0;
  text-align: right;
  font: 400 0.5625rem/1.2 var(--mono);
}
.band span {
  display: block;
  padding: 2px 4px;
}
.band.shut {
  background: repeating-linear-gradient(
    -45deg,
    transparent 0 6px,
    color-mix(in srgb, var(--red) 20%, transparent) 6px 12px
  );
  color: var(--red);
}
.band.change {
  background: repeating-linear-gradient(
    -45deg,
    transparent 0 6px,
    color-mix(in srgb, var(--amber) 22%, transparent) 6px 12px
  );
  color: var(--amber);
  -webkit-touch-callout: none;
  user-select: none;
  -webkit-user-select: none;
}
button.band.change {
  cursor: grab;
}
.band.change.failing {
  outline: 2px solid var(--red);
  outline-offset: -2px;
}
.limit {
  left: 18px;
  right: 0;
  z-index: 2;
  border-top: 1.5px solid var(--amber);
}
.limit span {
  display: block;
  padding: 1px 3px 0;
  text-align: right;
  font: 400 0.5625rem/1.1 var(--mono);
  color: var(--amber);
}
.limit.bad {
  border-color: var(--red);
}
.limit.bad span {
  color: var(--red);
}
.ln {
  z-index: 2;
  width: 0;
  border-left: 2px solid var(--ink-2);
}
.ln.fly {
  border-left-style: dotted;
}
.ln.hold {
  border-left-color: var(--amber);
}
.due {
  z-index: 3;
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--ink);
  background: var(--scope);
  transform: rotate(45deg);
}
.card {
  left: 20px;
  right: 3px;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  height: 24px;
  margin: 0;
  padding: 0 0.3rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--wake, var(--medium));
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: 400 0.6875rem/1 var(--mono);
  white-space: nowrap;
  overflow: hidden;
  cursor: grab;
  -webkit-touch-callout: none;
  user-select: none;
  -webkit-user-select: none;
}
.card.wake-H {
  --wake: var(--heavy);
}
.card.wake-M {
  --wake: var(--medium);
}
.card.wake-L {
  --wake: var(--light);
}
.card.failing {
  border-color: var(--red);
  border-left-color: var(--red);
}
.card.sel,
.band.change.sel {
  outline: 2px solid var(--amber);
  outline-offset: 1px;
}
.card.sel {
  background: color-mix(in srgb, var(--amber) 14%, var(--panel));
}
.card.landing,
.band.change.landing {
  outline: 2px dashed var(--phosphor);
  outline-offset: 1px;
  opacity: 0.75;
}
.cs {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 700;
}
.wk {
  flex: none;
  padding: 1px 3px;
  border-radius: 3px;
  background: var(--wake);
  color: var(--bg);
  font-weight: 700;
}
.ic {
  flex: none;
  font-weight: 400;
  font-size: 0.625rem;
}
.ic.bad {
  padding: 0 2px;
  border-radius: 3px;
  background: var(--red);
  color: #fff;
}
.ic.hold {
  color: var(--amber);
}
.dl {
  flex: none;
  margin-left: auto;
  padding-left: 0.2rem;
  color: var(--ink-2);
}
.dl.hold {
  color: var(--amber);
  font-weight: 700;
}
.empty {
  top: 0.5rem;
  left: 0.5rem;
  right: 0.5rem;
  margin: 0;
  font: 400 0.6875rem/1.3 var(--mono);
  color: var(--ink-2);
}
.best {
  margin-top: 1.5rem;
}
.best summary {
  cursor: pointer;
}
.best .lanes {
  margin-top: 0.75rem;
}
.card:focus-visible,
.band.change:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

/* Dragging: the card under the finger, the gap it leaves and the line where it would land */
.ghost {
  position: fixed;
  z-index: 20;
  margin: 0;
  pointer-events: none;
  box-shadow: 0 10px 28px rgb(0 0 0 / 0.35);
  transform: scale(1.04) rotate(-1deg);
  opacity: 0.88;
}
.dragging,
.dragging * {
  cursor: grabbing !important;
}
.coach {
  margin-top: 0.75rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--phosphor);
  border-radius: 12px;
  background: color-mix(in srgb, var(--phosphor) 8%, var(--panel));
  font-size: 0.875rem;
}
.coach p {
  margin: 0 0 0.5rem;
}
.dock-hint {
  max-width: 40rem;
  margin: 0 auto 0.4rem;
  font: 400 0.75rem/1.3 var(--mono);
  color: var(--ink-2);
}
.better {
  color: var(--phosphor);
  font-weight: 700;
}
.worse {
  color: var(--amber);
  font-weight: 700;
}

/* The dock: selection controls and the totals, in the thumb zone */
.dock {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 5;
  padding: 0.6rem var(--gutter) calc(0.6rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
}
.dock-sel,
.dock-main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  max-width: 40rem;
  margin: 0 auto;
}
.dock-sel {
  margin-bottom: 0.5rem;
}
.dock-who {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.dock-info {
  font: 400 0.6875rem/1.3 var(--mono);
  color: var(--ink-2);
}
.dock-name {
  font: 700 0.875rem/1.2 var(--mono);
}
.dock-btns {
  display: flex;
  gap: 0.35rem;
}
.totals {
  margin: 0;
  font: 400 0.875rem/1.3 var(--mono);
}
.bad {
  color: var(--red);
}

/* The result */
.headline {
  margin: 0 0 1rem;
  font: 800 clamp(1.75rem, 7vw, 2.25rem) / 1.1 var(--sans);
}
.scoreline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.scoreline div {
  display: flex;
  flex-direction: column;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}
.scoreline .big {
  font: 700 1.5rem/1.1 var(--mono);
  color: var(--phosphor);
}
.scoreline .lbl {
  font-size: 0.75rem;
  color: var(--ink-2);
}
.fails {
  color: var(--red);
  font-family: var(--mono);
}
.share-row {
  display: flex;
  gap: 0.5rem;
}
.copied {
  min-height: 1.4em;
  font: 400 0.8125rem/1.4 var(--mono);
  color: var(--ink-2);
  white-space: pre-line;
}
.best-title {
  margin: 1.5rem 0 0;
  font: 700 1rem/1.3 var(--sans);
}
.lanes.readonly .card {
  cursor: default;
}

/* Dialogs */
.sheet {
  width: min(30rem, calc(100vw - 2rem));
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  color: var(--ink);
}
.sheet h2:focus {
  outline: none;
}
.sheet::backdrop {
  background: rgb(0 0 0 / 0.5);
}
.sheet h2 {
  margin: 0 0 0.5rem;
  font: 800 1.375rem/1.2 var(--sans);
}
.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Header buttons and stats */
.head-btns {
  display: flex;
  gap: 0.5rem;
}
.icon-btn svg {
  display: block;
  margin: auto;
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0.75rem 0 0.5rem;
}
.stats div {
  display: flex;
  flex-direction: column-reverse;
  gap: 0.125rem;
}
.stats dt {
  font: 400 0.75rem/1.2 var(--mono);
  color: var(--ink-2);
}
.stats dd {
  margin: 0;
  font: 700 1.5rem/1 var(--mono);
  color: var(--phosphor);
}
.fine {
  font-size: 0.8125rem;
  color: var(--ink-2);
}
.streak {
  font: 700 0.9375rem/1.3 var(--mono);
  color: var(--phosphor);
}
.share-row {
  flex-wrap: wrap;
}
.share-row svg {
  width: 1.1em;
  height: 1.1em;
}

/* The radar replay */
.radar {
  margin: 0.5rem 0 1rem;
}
.scope {
  display: block;
  width: 100%;
  max-width: 30rem;
  aspect-ratio: 1;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--scope);
}
.radar-ctl {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin: 0.6rem 0;
}
.radar-clock {
  min-width: 5.5em;
  font: 700 0.9375rem/1 var(--mono);
  color: var(--phosphor);
  text-align: right;
}
.radar-log {
  max-height: 7.5rem;
  margin: 0;
  padding: 0.5rem 0.75rem;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  list-style: none;
  font: 400 0.75rem/1.5 var(--mono);
  color: var(--ink-2);
}
.radar-log li:first-child {
  color: var(--ink);
}
@media (prefers-reduced-motion: reduce) {
  .btn,
  .card {
    transition: none;
  }
}

/* Narrow runway columns (small phones): the wake shows in the card's colour stripe alone. */
.lane {
  container-type: inline-size;
}
@container (max-width: 150px) {
  .card .wk {
    display: none;
  }
}