:root {
  color-scheme: dark;
  --bg: #05070b;
  --ink: #f7f8fb;
  --muted: #a7b0c0;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(9, 12, 20, 0.72);
  --panel-strong: rgba(11, 15, 25, 0.88);
  --cyan: #2ee6ff;
  --lime: #b7ff4d;
  --pink: #ff4fa3;
  --amber: #ffd166;
  --danger: #ff5d5d;
  --radius: 8px;
  --shadow: 0 18px 54px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.45;
}

button {
  color: inherit;
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  transform: translateY(-150%);
  border: 1px solid var(--cyan);
  border-radius: 6px;
  background: #000;
  color: var(--cyan);
  padding: 10px 12px;
}

.skip-link:focus {
  transform: translateY(0);
}

.game-shell {
  position: fixed;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 14%, rgba(46, 230, 255, 0.1), transparent 28rem),
    radial-gradient(circle at 82% 18%, rgba(255, 79, 163, 0.08), transparent 25rem),
    #05070b;
}

#world {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.hud-top,
.hud-left,
.hud-right,
.event-log,
.touch-controls {
  position: absolute;
  z-index: 10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hud-top {
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 12px;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(46, 230, 255, 0.55);
  border-radius: 6px;
  background: rgba(2, 5, 10, 0.82);
  color: var(--cyan);
  font-weight: 900;
  box-shadow: inset 0 0 18px rgba(46, 230, 255, 0.15);
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.toolbar {
  display: flex;
  gap: 8px;
}

.run-summary {
  display: grid;
  min-width: 124px;
  gap: 3px;
  margin-left: auto;
  padding: 8px 12px;
  border: 1px solid rgba(183, 255, 77, 0.24);
  border-radius: 6px;
  background: rgba(4, 7, 12, 0.56);
}

.run-summary span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
}

.run-summary strong {
  color: var(--lime);
  font-size: 1.05rem;
  line-height: 1;
}

.icon-button,
.primary-button,
.control-button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(7, 10, 16, 0.86);
  cursor: pointer;
  transition: border-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.icon-button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  font-weight: 900;
}

.icon-button:hover,
.icon-button:focus-visible,
.control-button:hover,
.control-button:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(46, 230, 255, 0.14);
}

.icon-button:active,
.primary-button:active,
.control-button:active {
  transform: translateY(1px);
}

.hud-left {
  top: 94px;
  left: 14px;
  width: min(360px, calc(100vw - 28px));
  padding: 14px;
}

.stat-line,
.nav-readout {
  display: grid;
  gap: 6px;
}

.stat-line {
  margin-bottom: 12px;
}

.stat-line span,
.stat-grid span,
.nav-readout span,
.meter-label span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.stat-line strong {
  color: var(--lime);
  font-size: 1rem;
  line-height: 1.25;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.stat-grid div,
.nav-readout {
  min-width: 0;
  min-height: 62px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: rgba(4, 7, 12, 0.62);
}

.stat-grid strong,
.nav-readout strong {
  display: block;
  margin-top: 6px;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 1.12rem;
  line-height: 1;
}

.meter-row {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.meter-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.meter-label strong {
  color: var(--amber);
  font-size: 0.82rem;
}

.meter {
  height: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.38);
}

.meter i {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--pink), var(--lime));
  transform-origin: left center;
}

.meter-mission i {
  background: linear-gradient(90deg, var(--lime), var(--cyan));
}

.hud-right {
  top: 94px;
  right: 14px;
  display: grid;
  width: 210px;
  gap: 8px;
  padding: 12px;
}

#radar {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid rgba(46, 230, 255, 0.24);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.36);
}

.event-log {
  left: 14px;
  bottom: 14px;
  display: flex;
  width: min(420px, calc(100vw - 28px));
  max-height: 168px;
  flex-direction: column-reverse;
  gap: 8px;
  overflow: hidden;
  padding: 12px;
}

.event-log span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
}

.event-log span:first-child {
  color: var(--ink);
}

.center-reticle {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 8;
  width: 34px;
  height: 34px;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.center-reticle::before,
.center-reticle::after {
  position: absolute;
  inset: 50% auto auto 50%;
  content: "";
  background: rgba(183, 255, 77, 0.78);
  transform: translate(-50%, -50%);
}

.center-reticle::before {
  width: 34px;
  height: 1px;
}

.center-reticle::after {
  width: 1px;
  height: 34px;
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 42%, rgba(46, 230, 255, 0.16), transparent 23rem),
    rgba(5, 7, 11, 0.72);
  backdrop-filter: blur(5px);
}

.overlay[hidden] {
  display: none;
}

.eyebrow {
  margin: 0;
  color: var(--lime);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(3rem, 8vw, 6.3rem);
  line-height: 0.95;
  letter-spacing: 0;
  text-shadow: 0 0 26px rgba(46, 230, 255, 0.34);
}

.overlay p:not(.eyebrow) {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.briefing-grid {
  display: grid;
  width: min(760px, calc(100vw - 32px));
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 4px 0;
}

.briefing-grid article {
  min-height: 128px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(7, 10, 16, 0.78);
  text-align: left;
}

.briefing-grid span {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 900;
}

.briefing-grid strong,
.briefing-grid small {
  display: block;
}

.briefing-grid strong {
  margin-bottom: 6px;
  color: var(--ink);
}

.briefing-grid small {
  color: var(--muted);
  line-height: 1.45;
}

.control-hints {
  display: flex;
  max-width: min(760px, calc(100vw - 32px));
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.control-hints span {
  min-height: 30px;
  padding: 6px 10px;
  border: 1px solid rgba(46, 230, 255, 0.2);
  border-radius: 999px;
  background: rgba(46, 230, 255, 0.08);
  color: #dffbff;
  font-size: 0.82rem;
  font-weight: 800;
}

.primary-button {
  min-width: 170px;
  min-height: 48px;
  margin-top: 4px;
  border-color: rgba(183, 255, 77, 0.58);
  background: var(--lime);
  color: #14190b;
  font-weight: 900;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px rgba(183, 255, 77, 0.18), 0 16px 36px rgba(183, 255, 77, 0.18);
}

.touch-controls {
  right: 14px;
  bottom: 14px;
  display: none;
  grid-template-columns: 116px minmax(112px, 160px);
  gap: 16px;
  align-items: center;
  padding: 12px;
}

.joystick {
  position: relative;
  width: 104px;
  height: 104px;
  border: 1px solid rgba(46, 230, 255, 0.35);
  border-radius: 999px;
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(46, 230, 255, 0.22) 50%, transparent calc(50% + 1px)),
    linear-gradient(0deg, transparent calc(50% - 1px), rgba(46, 230, 255, 0.22) 50%, transparent calc(50% + 1px)),
    rgba(5, 8, 14, 0.9);
  touch-action: none;
}

.joystick i {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: rgba(46, 230, 255, 0.16);
  transform: translate(-50%, -50%);
}

.touch-buttons {
  display: grid;
  gap: 10px;
}

.control-button {
  min-height: 54px;
  color: var(--amber);
  font-weight: 900;
}

.control-button[data-action="pulse"] {
  color: var(--lime);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

@media (max-width: 900px) {
  .hud-left {
    top: 84px;
    width: min(330px, calc(100vw - 28px));
  }

  .hud-right {
    top: auto;
    bottom: 14px;
    width: 178px;
  }

  .event-log {
    display: none;
  }

  .touch-controls {
    display: grid;
  }
}

@media (max-width: 680px) {
  .hud-top {
    min-height: 58px;
  }

  .brand small {
    display: none;
  }

  .run-summary {
    display: none;
  }

  .brand-mark,
  .icon-button {
    width: 38px;
    height: 38px;
  }

  .hud-left {
    right: 14px;
    width: auto;
  }

  .stat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stat-grid div {
    min-height: 54px;
    padding: 8px;
  }

  .stat-grid strong {
    font-size: 0.98rem;
  }

  .hud-right {
    display: none;
  }

  .touch-controls {
    left: 14px;
    right: 14px;
    grid-template-columns: 104px 1fr;
  }
}

@media (max-width: 440px) {
  .toolbar {
    gap: 6px;
  }

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

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

  .briefing-grid article {
    min-height: auto;
  }

  h1 {
    font-size: clamp(2.5rem, 15vw, 4.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .icon-button,
  .primary-button,
  .control-button {
    transition: none;
  }
}