:root {
  color-scheme: dark;
  --bg: #070b12;
  --hud: #9fd8ff;
  --hud-muted: #5a8aa6;
  --accent: #c2f5ff;
  --danger: #ff6b7a;
  --panel: rgba(7, 14, 22, 0.75);
  --grid: rgba(120, 190, 220, 0.18);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  font-family: "IBM Plex Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body,
html {
  width: 100%;
  height: 100%;
  background: var(--bg);
  overflow: hidden;
  touch-action: none;
  padding: 0;
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
  touch-action: none;
  padding: calc(var(--safe-top) + 12px) calc(var(--safe-right) + 12px)
    calc(var(--safe-bottom) + 12px) calc(var(--safe-left) + 12px);
  box-sizing: border-box;
}

#gameCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, #0b1220 0%, #070b12 60%);
  display: block;
  touch-action: none;
}

#gameCanvas::after {
  content: "";
}

#hud {
  pointer-events: none;
  position: absolute;
  inset: 0;
  padding: 12px;
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  grid-template-rows: auto 1fr auto;
  color: var(--hud);
  text-shadow: 0 0 6px rgba(140, 210, 255, 0.35);
  font-size: clamp(12px, 2.5vw, 16px);
}

#hud::before {
  content: "";
  position: absolute;
  inset: 8px;
  background:
    linear-gradient(var(--grid), var(--grid)) 0 0/40px 1px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 0 0/1px 40px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 100% 0/40px 1px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 100% 0/1px 40px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 0 100%/40px 1px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 0 100%/1px 40px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 100% 100%/40px 1px no-repeat,
    linear-gradient(var(--grid), var(--grid)) 100% 100%/1px 40px no-repeat;
  pointer-events: none;
}

.hud-top-left,
.hud-top-right {
  font-size: clamp(12px, 2vw, 14px);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
}

.hud-top-left {
  grid-column: 1;
  grid-row: 1;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hud-top-center {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  align-self: start;
  font-size: clamp(13px, 2.5vw, 16px);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
}

.hud-top-right {
  grid-column: 3;
  grid-row: 1;
  justify-self: end;
  align-self: start;
  text-align: right;
  max-width: 55vw;
  white-space: normal;
  margin-right: 14px;
}

.hud-brand {
  font-size: clamp(12px, 2vw, 14px);
}

.hud-health {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
}

.health-bar {
  width: 120px;
  height: 8px;
  border: 1px solid var(--hud);
  background: rgba(10, 20, 30, 0.8);
  border-radius: 999px;
  overflow: hidden;
}

#healthFill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #7fffd4, #ff6b7a);
  transition: width 0.1s ease-out;
}

.hud-left {
  grid-column: 1;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 24px;
  text-transform: uppercase;
}

.hud-center {
  grid-column: 2;
  grid-row: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.hud-title {
  font-size: clamp(14px, 3.5vw, 20px);
  letter-spacing: 3px;
  text-transform: uppercase;
}

#hud-callout {
  font-size: clamp(10px, 2.5vw, 14px);
  color: var(--hud-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition:
    color 0.2s ease,
    text-shadow 0.2s ease;
}

#hud-callout.active {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(180, 240, 255, 0.6);
}

#level-callout {
  font-size: clamp(12px, 3vw, 18px);
  padding: 4px 10px;
  border: 1px solid var(--hud);
  border-radius: 4px;
  background: rgba(5, 7, 14, 0.7);
}

.hud-right {
  grid-column: 3;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  margin-top: 24px;
  text-transform: uppercase;
  max-width: 45vw;
  margin-right: 14px;
}

.hud-bottom {
  grid-column: 1 / span 3;
  grid-row: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: clamp(14px, 3vw, 18px);
  text-transform: uppercase;
}

.hud-score-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: clamp(16px, 4vw, 22px);
  color: var(--accent);
}

.hud-score-block #score {
  font-size: clamp(26px, 6vw, 40px);
  letter-spacing: 2px;
}

.hud-score-block #combo {
  font-size: clamp(12px, 3vw, 16px);
  color: var(--hud-muted);
}

#dangerGauge {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 6px;
  height: 10px;
  border: 1px solid var(--danger);
  background: rgba(40, 10, 14, 0.8);
  border-radius: 999px;
  overflow: hidden;
  pointer-events: none;
}

#dangerFill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(255, 107, 122, 0.6), rgba(255, 107, 122, 0.95));
  transition: width 0.15s ease-out;
}

#readyPanel {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(24px, 8vw, 48px);
  color: var(--accent);
  letter-spacing: 4px;
  text-transform: uppercase;
  background: rgba(7, 11, 18, 0.35);
  z-index: 2;
  pointer-events: none;
}

.hud-line {
  display: flex;
  gap: 6px;
}

.blink {
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  to {
    opacity: 0.2;
  }
}

#diagnostics {
  position: absolute;
  right: 12px;
  bottom: 50px;
  padding: 6px 10px;
  background: var(--panel);
  color: var(--hud);
  border: 1px solid var(--hud-muted);
  font-size: 12px;
  pointer-events: none;
}

#controls {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: flex;
  gap: 8px;
}

#controls button,
.screen button {
  background: var(--panel);
  color: var(--hud);
  border: 1px solid var(--hud);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
}

#controls button {
  font-size: 12px;
  opacity: 0.8;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(7, 11, 18, 0.9);
  color: var(--hud);
  text-align: center;
  padding: 24px 22px 34px;
}

.screen-inner {
  max-width: 450px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 10px 12px 18px;
}

.screen h1,
.screen h2 {
  font-size: clamp(18px, 5.5vw, 28px);
}

.screen p {
  font-size: 13px;
  color: var(--hud-muted);
}

.radio {
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.input-group input {
  background: rgba(5, 7, 14, 0.9);
  border: 1px solid var(--hud);
  color: var(--hud);
  padding: 8px;
  border-radius: 4px;
}

.secondary {
  border-color: var(--hud-muted);
  color: var(--hud-muted);
}

.leaderboard {
  border-top: 1px solid rgba(120, 190, 220, 0.3);
  padding-top: 12px;
  text-align: left;
}

.leaderboard ol {
  max-height: 180px;
  overflow-y: auto;
  padding-left: 20px;
}

.hidden {
  display: none !important;
}

#warning {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 77, 109, 0.9);
  color: #fff;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
}

@media (min-width: 768px) {
  #hud {
    font-size: 16px;
  }
}

@media (max-width: 420px) {
  #hud {
    font-size: 0.86em;
  }

  .hud-top-right {
    max-width: 50vw;
  }

  .hud-right {
    max-width: 50vw;
  }
}

@media (max-width: 360px) {
  .hud-right .hud-line:last-child {
    display: none;
  }
}

/* Drone selection */
.drone-select {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid rgba(120, 190, 220, 0.25);
  padding: 12px;
  border-radius: 8px;
  background: rgba(6, 12, 20, 0.6);
}

.drone-select h2 {
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.drone-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 10px;
}

.drone-option {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background: rgba(7, 12, 20, 0.75);
  border: 1px solid rgba(120, 190, 220, 0.25);
  color: var(--hud);
  border-radius: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition:
    border-color 0.1s ease,
    box-shadow 0.1s ease,
    transform 0.1s ease;
}

.drone-option img {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 0 6px rgba(120, 190, 220, 0.35));
}

.drone-option.selected {
  border: 4px solid #8ffbff;
  box-shadow:
    0 0 24px rgba(120, 255, 245, 0.8),
    0 0 12px rgba(120, 255, 245, 0.6) inset;
  font-weight: 600;
}

.drone-option:active {
  transform: scale(0.98);
}

.selected-tag {
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(120, 255, 245, 0.2);
  border: 1px solid rgba(143, 251, 255, 0.7);
  color: #9ffcff;
  font-size: 10px;
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(-4px);
  transition:
    opacity 0.1s ease,
    transform 0.1s ease;
}

.drone-option.selected .selected-tag {
  opacity: 1;
  transform: translateY(0);
}

.drone-option:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#startScreen .screen-inner {
  padding-bottom: 28px;
}

/* Scanline overlay */
#app::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.02) 1px,
    rgba(0, 0, 0, 0) 4px
  );
  mix-blend-mode: lighten;
  pointer-events: none;
}

/* Radar sweep overlay */
#app::before {
  content: "";
  position: absolute;
  inset: -20%;
  background: conic-gradient(
    from 0deg,
    rgba(120, 200, 240, 0) 0deg,
    rgba(120, 200, 240, 0.12) 12deg,
    rgba(120, 200, 240, 0) 32deg,
    rgba(120, 200, 240, 0) 360deg
  );
  opacity: 0.6;
  mix-blend-mode: screen;
  animation: radar-sweep 8s linear infinite;
  pointer-events: none;
}

@keyframes radar-sweep {
  to {
    transform: rotate(360deg);
  }
}