:root {
  --sea: #eff8f7;
  --sea-line: rgba(15, 118, 110, 0.13);
  --user: #1d4ed8;
  --user-soft: rgba(37, 99, 235, 0.16);
  --ghost: #b45309;
  --ghost-soft: rgba(180, 83, 9, 0.12);
  --lock: #0f766e;
  --lock-soft: rgba(15, 118, 110, 0.16);
  --loss: #b91c1c;
}

html[data-theme='dark'] {
  --sea: #161d20;
  --sea-line: rgba(94, 234, 212, 0.1);
  --user: #60a5fa;
  --user-soft: rgba(96, 165, 250, 0.15);
  --ghost: #fbbf24;
  --ghost-soft: rgba(251, 191, 36, 0.12);
  --lock: #5eead4;
  --lock-soft: rgba(94, 234, 212, 0.14);
  --loss: #fca5a5;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 280px;
  min-height: 100%;
  overflow-x: hidden;
}

body {
  display: grid;
  min-height: 100svh;
  margin: 0;
  place-items: stretch center;
  color: var(--game-text);
  background:
    radial-gradient(circle at 12% 0%, var(--game-accent-soft), transparent 13rem), var(--game-bg);
  font-family: var(--game-font);
}

button {
  font: inherit;
}

.game {
  display: grid;
  align-content: start;
  width: min(100%, 420px);
  min-height: 100svh;
  padding: 0.85rem;
  gap: 0.62rem;
}

.game-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.65rem;
}

.eyebrow {
  margin: 0 0 0.16rem;
  color: var(--game-accent);
  font-family: var(--game-mono);
  font-size: 0.54rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h1 {
  margin: 0;
  font-size: 1.16rem;
  font-weight: 650;
  line-height: 1.16;
}

.round-card {
  display: grid;
  min-width: 58px;
  padding: 0.38rem 0.5rem;
  gap: 0.06rem;
  color: var(--game-muted);
  background: var(--game-surface);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
  font-size: 0.52rem;
  text-align: right;
}

#round {
  color: var(--game-accent);
  font-family: var(--game-mono);
  font-size: 0.92rem;
  font-weight: 800;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.metrics > div {
  display: grid;
  min-width: 0;
  min-height: 52px;
  padding: 0.4rem 0.52rem;
  align-content: center;
  gap: 0.08rem;
  background: var(--game-surface);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
}

.metrics span {
  overflow: hidden;
  color: var(--game-muted);
  font-size: 0.55rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metrics output {
  color: var(--game-text);
  font-family: var(--game-mono);
  font-size: 0.84rem;
  font-weight: 800;
}

.field {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: var(--sea);
  border: 1px solid var(--game-divider);
  border-radius: calc(var(--game-radius) + 2px);
  box-shadow: var(--game-shadow);
}

#scene {
  display: block;
  width: 100%;
  aspect-ratio: 18 / 11;
  overflow: hidden;
}

.water {
  fill: var(--sea);
}

.water-grid {
  fill: url('#water-grid');
}

.water-line {
  fill: none;
  stroke: var(--sea-line);
  stroke-width: 1;
}

.coverage,
.predicted-coverage {
  fill: var(--game-accent-soft);
  stroke: var(--game-accent);
  stroke-width: 1.2;
}

.coverage {
  fill-opacity: 0.48;
  stroke-opacity: 0.72;
  transition:
    cx 480ms ease,
    cy 480ms ease,
    rx 480ms ease,
    ry 480ms ease,
    fill-opacity 180ms ease;
}

.predicted-coverage {
  fill: none;
  stroke: var(--ghost);
  stroke-dasharray: 4 5;
  stroke-opacity: 0;
  transition:
    cx 240ms ease,
    cy 240ms ease,
    rx 240ms ease,
    ry 240ms ease,
    stroke-opacity 180ms ease;
}

.field[data-phase='forecast'] .predicted-coverage,
.field[data-phase='observed'] .predicted-coverage {
  stroke-opacity: 0.78;
}

.uav-vector {
  opacity: 0;
  stroke: var(--ghost);
  stroke-dasharray: 3 4;
  stroke-linecap: round;
  stroke-width: 1.4;
  transition: opacity 180ms ease;
}

.predicted-uav {
  opacity: 0;
  fill: var(--sea);
  stroke: var(--ghost);
  stroke-dasharray: 2 2;
  stroke-width: 1.5;
  transition: opacity 180ms ease;
}

.field[data-phase='forecast'] .uav-vector,
.field[data-phase='forecast'] .predicted-uav {
  opacity: 0.88;
}

.uav {
  color: var(--game-accent);
  filter: drop-shadow(0 3px 6px color-mix(in srgb, var(--game-accent) 24%, transparent));
}

.uav path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.uav circle:not(.uav-halo) {
  fill: var(--sea);
  stroke: currentColor;
  stroke-width: 2;
}

.uav-halo {
  fill: var(--game-accent-soft);
  stroke: var(--game-accent);
  stroke-opacity: 0.5;
}

.user-node .user-halo {
  fill: var(--user-soft);
}

.user-node .user-core {
  fill: var(--user);
  stroke: var(--sea);
  stroke-width: 1.2;
}

.user-node.is-served .user-halo {
  fill: var(--game-accent-soft);
  stroke: var(--game-accent);
  stroke-width: 0.8;
}

.ghost-node {
  fill: var(--ghost-soft);
  stroke: var(--ghost);
  stroke-width: 1.1;
}

.ghost-step-1 {
  opacity: 0.72;
}

.ghost-step-2 {
  opacity: 0.44;
}

.ghost-step-3 {
  opacity: 0.24;
}

.field-chip {
  position: absolute;
  top: 0.42rem;
  display: flex;
  align-items: center;
  min-height: 28px;
  padding: 0.24rem 0.38rem;
  gap: 0.28rem;
  color: var(--game-muted);
  background: color-mix(in srgb, var(--game-bg) 88%, transparent);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
  font-size: 0.53rem;
  pointer-events: none;
}

.phase-chip {
  left: 0.42rem;
}

.height-chip {
  right: 0.42rem;
}

.lock-chip {
  top: auto;
  bottom: 0.42rem;
  left: 0.42rem;
  max-width: calc(100% - 0.84rem);
  background: color-mix(in srgb, var(--game-bg) 93%, transparent);
}

.lock-chip small {
  overflow: hidden;
  max-width: 8.5rem;
  color: var(--game-muted);
  font-size: 0.46rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#lock-count {
  min-width: 2.4rem;
  color: var(--lock);
  font-family: var(--game-mono);
  font-weight: 850;
  text-align: right;
}

.lock-pips {
  display: flex;
  gap: 0.16rem;
}

.lock-pips i {
  width: 6px;
  height: 6px;
  background: var(--game-divider);
  border: 1px solid color-mix(in srgb, var(--lock) 38%, var(--game-divider));
  border-radius: 50%;
  transition:
    background-color 180ms ease,
    box-shadow 180ms ease;
}

.lock-pips i.is-active {
  background: var(--lock);
  box-shadow: 0 0 0 3px var(--lock-soft);
}

.lock-chip[data-state='locked'] {
  color: var(--lock);
  border-color: color-mix(in srgb, var(--lock) 62%, var(--game-divider));
}

.field-chip output {
  color: var(--game-text);
  font-family: var(--game-mono);
  font-weight: 800;
}

.control-deck {
  display: grid;
  gap: 0.34rem;
}

.move-actions,
.altitude-actions {
  display: grid;
  gap: 0.34rem;
}

.move-actions {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

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

.control-deck button {
  display: grid;
  min-width: 0;
  min-height: 44px;
  padding: 0.28rem 0.2rem;
  place-content: center;
  gap: 0.04rem;
  color: var(--game-text);
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--game-surface) 93%, var(--game-accent-soft)),
    var(--game-surface)
  );
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
  box-shadow: inset 0 1px 0 color-mix(in srgb, white 52%, transparent);
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.control-deck button:hover:not(:disabled) {
  color: var(--game-accent-strong);
  border-color: var(--game-accent);
  transform: translateY(-1px);
}

.control-deck button:active:not(:disabled) {
  transform: translateY(1px);
}

.control-deck button:disabled {
  cursor: wait;
  opacity: 0.62;
}

.control-deck button span {
  color: var(--game-accent);
  font-family: var(--game-mono);
  font-size: 0.82rem;
  line-height: 0.9;
}

.control-deck button strong {
  overflow: hidden;
  font-size: 0.54rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.control-deck .hold-action {
  background: var(--game-accent-soft);
  border-color: color-mix(in srgb, var(--game-accent) 48%, var(--game-divider));
}

.altitude-actions button {
  grid-template-columns: auto auto;
  align-items: center;
  gap: 0.3rem;
}

.altitude-actions button span {
  font-size: 1rem;
}

button:focus-visible {
  outline: 3px solid var(--game-accent);
  outline-offset: 2px;
}

.utility-row {
  display: grid;
  grid-template-columns: minmax(96px, auto) minmax(0, 1fr);
  align-items: center;
  gap: 0.55rem;
}

.reset {
  min-height: 44px;
  padding: 0.42rem 0.58rem;
  color: var(--game-text);
  background: transparent;
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
  cursor: pointer;
  font-size: 0.62rem;
  font-weight: 750;
}

.reset:hover {
  border-color: var(--game-accent);
}

.legend {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 0.55rem;
  color: var(--game-muted);
  font-size: 0.52rem;
}

.legend span {
  display: flex;
  align-items: center;
  gap: 0.22rem;
  white-space: nowrap;
}

.legend b {
  font-weight: 650;
}

.legend i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.actual-dot {
  background: var(--user);
}

.ghost-dot {
  background: var(--ghost-soft);
  border: 1px solid var(--ghost);
}

.status {
  display: grid;
  min-height: 2.55em;
  margin: 0;
  align-content: center;
  color: var(--game-text);
  font-size: 0.67rem;
  font-weight: 650;
  line-height: 1.28;
  text-align: center;
}

.status[data-state='forecast'] {
  color: var(--ghost);
}

.status[data-state='observed'] {
  color: var(--game-accent-strong);
}

.status[data-outcome='gain'] {
  color: var(--lock);
}

.status[data-outcome='loss'] {
  color: var(--loss);
}

.note {
  margin: -0.16rem auto 0;
  color: var(--game-muted);
  font-size: 0.57rem;
  line-height: 1.32;
  text-align: center;
}

@media (max-width: 320px) {
  .game {
    padding: 0.68rem;
    gap: 0.52rem;
  }

  .eyebrow {
    font-size: 0.49rem;
    letter-spacing: 0.09em;
  }

  h1 {
    font-size: 1.04rem;
  }

  .metrics > div {
    padding-inline: 0.42rem;
  }

  .metrics span {
    font-size: 0.5rem;
  }

  .move-actions,
  .altitude-actions,
  .metrics {
    gap: 0.25rem;
  }

  .control-deck {
    gap: 0.25rem;
  }

  .control-deck button {
    padding-inline: 0.12rem;
  }

  .control-deck button strong {
    font-size: 0.49rem;
  }

  .lock-chip small {
    max-width: 5.4rem;
  }

  .utility-row {
    gap: 0.35rem;
  }

  .legend {
    gap: 0.35rem;
    font-size: 0.48rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .coverage,
  .predicted-coverage,
  .uav-vector,
  .predicted-uav,
  .lock-pips i,
  .control-deck button {
    transition: none;
  }
}