:root {
  --ink: #ebf4ff;
  --panel-bg: rgba(9, 24, 24, 0.82);
  --panel-border: rgba(124, 219, 178, 0.5);
  --accent: #ffd075;
  --accent-cold: #8ef0ff;
  --danger: #ff6f8a;
  --ok: #84ffbf;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 18%, rgba(132, 216, 188, 0.42) 0%, rgba(20, 36, 39, 0) 42%),
    radial-gradient(circle at 74% 14%, rgba(162, 214, 246, 0.33) 0%, rgba(18, 33, 43, 0) 45%),
    radial-gradient(circle at 45% 88%, rgba(155, 198, 141, 0.28) 0%, rgba(12, 20, 23, 0) 48%),
    #0a1619;
}

#app {
  position: relative;
  width: 100vw;
  height: 100vh;
}

#game-root,
#game-root canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#space-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: soft-light;
  opacity: 0.38;
  background-image:
    radial-gradient(circle at 22% 22%, rgba(255, 255, 255, 0.2) 0, rgba(255, 255, 255, 0) 18%),
    radial-gradient(circle at 73% 31%, rgba(189, 239, 255, 0.24) 0, rgba(189, 239, 255, 0) 16%),
    radial-gradient(circle at 38% 79%, rgba(184, 255, 192, 0.18) 0, rgba(184, 255, 192, 0) 15%);
  background-size: 680px 680px, 740px 740px, 660px 660px;
  animation: drift 56s linear infinite;
}

.panel {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: min(620px, calc(100vw - 2rem));
  background: var(--panel-bg);
  border: 2px solid var(--panel-border);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06) inset,
    0 12px 30px rgba(4, 7, 16, 0.58);
  backdrop-filter: blur(4px);
  padding: 1rem 1.2rem;
  z-index: 30;
}

.start-panel,
#game-over {
  top: 9vh;
}

.start-panel h1,
#game-over h2,
.help-panel h2 {
  margin: 0 0 0.55rem;
  font-family: "Audiowide", sans-serif;
  letter-spacing: 0.05em;
  font-weight: 400;
}

.start-panel p,
#game-over p,
.help-panel p {
  margin: 0.45rem 0;
  line-height: 1.45;
}

.start-panel .micro {
  opacity: 0.84;
  font-size: 0.84rem;
}

.help-panel {
  left: auto;
  top: 3.5rem;
  right: 0.7rem;
  transform: none;
  width: min(420px, calc(100vw - 1.4rem));
  z-index: 22;
}

.help-section {
  margin-top: 0.5rem;
  border: 1px solid rgba(146, 228, 191, 0.28);
  background: rgba(8, 18, 20, 0.44);
  padding: 0.52rem;
}

.help-section h3 {
  margin: 0 0 0.46rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #d0ffdf;
}

.key-grid {
  margin-top: 0.2rem;
  display: grid;
  gap: 0.24rem;
}

.key-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.78rem;
}

.bind-btn {
  margin: 0;
  min-width: 5.8rem;
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0;
  font-size: 0.74rem;
  border-radius: 0.32rem;
  padding: 0.26rem 0.46rem;
  border: 1px solid rgba(150, 222, 191, 0.6);
  background: linear-gradient(180deg, rgba(17, 38, 39, 0.84), rgba(11, 23, 26, 0.84));
  font-weight: 700;
}

.bind-btn.binding {
  border-color: rgba(255, 196, 111, 0.9);
  color: #ffe4b4;
}

.bind-hint {
  margin-top: 0.44rem;
  font-size: 0.72rem;
  color: #ffdba8;
}

.reset-controls {
  margin-top: 0.45rem;
  width: 100%;
  padding: 0.36rem 0.52rem;
  font-size: 0.76rem;
}

.sensitivity-label {
  display: inline-block;
  font-size: 0.76rem;
  margin-bottom: 0.34rem;
}

.sensitivity-input {
  width: 100%;
  accent-color: #93ffbe;
}

.help-note {
  margin-top: 0.65rem;
  font-size: 0.76rem;
  opacity: 0.9;
}

button {
  margin-top: 0.9rem;
  padding: 0.62rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background:
    linear-gradient(135deg, rgba(255, 190, 102, 0.2) 0%, rgba(88, 212, 255, 0.24) 100%),
    rgba(13, 18, 34, 0.8);
  color: var(--ink);
  cursor: pointer;
  font-family: "Audiowide", sans-serif;
  font-size: 0.94rem;
  letter-spacing: 0.04em;
}

button:hover {
  border-color: rgba(255, 255, 255, 0.78);
  transform: translateY(-1px);
}

.help-toggle {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  margin: 0;
  z-index: 20;
  padding: 0.45rem 0.7rem;
  font-size: 0.78rem;
}

.hud {
  position: absolute;
  top: 0.64rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(520px, calc(100vw - 1.4rem));
  display: grid;
  grid-template-columns: repeat(3, minmax(108px, 1fr));
  gap: 0.34rem;
  z-index: 18;
  animation: rise 0.35s ease-out;
}

.stat-block {
  background: linear-gradient(180deg, rgba(11, 28, 28, 0.9) 0%, rgba(8, 18, 19, 0.86) 100%);
  border: 1px solid rgba(116, 222, 179, 0.3);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  padding: 0.3rem 0.5rem;
  border-radius: 0.44rem;
}

.label {
  font-size: 0.55rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #b8d6cf;
}

.value {
  margin-top: 0.07rem;
  font-weight: 700;
  font-size: 0.92rem;
}

#weapon-name {
  font-size: 0.74rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.boss-panel {
  position: absolute;
  left: 0.8rem;
  bottom: 0.74rem;
  width: min(360px, calc(100vw - 1.6rem));
  padding: 0.42rem 0.52rem;
  background: rgba(8, 18, 20, 0.72);
  border: 1px solid rgba(118, 211, 174, 0.4);
  box-shadow: 0 10px 20px rgba(3, 8, 10, 0.42);
  border-radius: 0.5rem;
  z-index: 18;
  pointer-events: none;
}

.boss-name {
  text-align: left;
  font-family: "Audiowide", sans-serif;
  font-size: 0.85rem;
  color: #ffddaf;
  text-shadow: 0 0 10px rgba(255, 145, 95, 0.34);
}

.boss-track {
  margin-top: 0.22rem;
  height: 10px;
  border-radius: 999px;
  background: rgba(22, 40, 40, 0.62);
  border: 1px solid rgba(174, 255, 221, 0.32);
  overflow: hidden;
}

.boss-fill {
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #ff587e 0%, #ffa16a 56%, #ffd88f 100%);
  transition: width 0.12s linear;
}

.boss-hp,
.boss-meta {
  margin-top: 0.2rem;
  text-align: left;
  font-size: 0.68rem;
  opacity: 0.9;
  text-shadow: 0 0 8px rgba(3, 6, 14, 0.9);
}

.boss-meta {
  color: #9ceec5;
}

.player-life-panel {
  position: absolute;
  right: 0.8rem;
  bottom: 0.92rem;
  z-index: 18;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  color: #dff5ff;
  text-shadow:
    0 0 12px rgba(9, 20, 20, 0.95),
    0 0 3px rgba(0, 0, 0, 0.9);
  pointer-events: none;
}

.life-name {
  font-size: 0.92rem;
  letter-spacing: 0.05em;
}

.life-value {
  font-size: 1.38rem;
  font-weight: 700;
  color: var(--ok);
}

.life-max {
  font-size: 0.92rem;
  opacity: 0.9;
}

.interaction {
  position: absolute;
  left: 50%;
  bottom: 1.35rem;
  transform: translateX(-50%);
  padding: 0.44rem 0.7rem;
  background: rgba(11, 15, 29, 0.88);
  border: 1px solid rgba(255, 197, 113, 0.58);
  z-index: 26;
  font-size: 0.77rem;
}

.crosshair {
  --crosshair-color: #58d7ff;
  --crosshair-size: 26px;
  --crosshair-width: 2px;
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--crosshair-size);
  height: var(--crosshair-size);
  transform: translate(-50%, -50%);
  z-index: 14;
  pointer-events: none;
}

.crosshair::before,
.crosshair::after {
  content: "";
  position: absolute;
  background: var(--crosshair-color);
  box-shadow: 0 0 8px color-mix(in srgb, var(--crosshair-color), transparent 32%);
}

.crosshair::before {
  width: var(--crosshair-width);
  top: 0;
  bottom: 0;
  left: calc(50% - var(--crosshair-width) / 2);
}

.crosshair::after {
  height: var(--crosshair-width);
  left: 0;
  right: 0;
  top: calc(50% - var(--crosshair-width) / 2);
}

.crosshair .dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--crosshair-color);
}

.crosshair.variant-1 {
  --crosshair-color: #ffca6b;
  --crosshair-size: 24px;
  transform: translate(-50%, -50%) rotate(45deg);
}

.crosshair.variant-2 {
  --crosshair-color: #8efdad;
  --crosshair-width: 1.6px;
  --crosshair-size: 28px;
}

.crosshair.variant-3 {
  --crosshair-color: #ff8faa;
  --crosshair-width: 2.4px;
  --crosshair-size: 22px;
}

#toast {
  position: absolute;
  left: 50%;
  bottom: 4.8rem;
  transform: translateX(-50%);
  padding: 0.56rem 0.82rem;
  border: 1px solid rgba(146, 208, 255, 0.56);
  background: rgba(9, 14, 26, 0.92);
  box-shadow: 0 8px 22px rgba(1, 2, 5, 0.58);
  z-index: 30;
  font-weight: 600;
}

#damage-flash {
  position: absolute;
  inset: 0;
  z-index: 19;
  pointer-events: none;
  opacity: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 76, 86, 0.2) 0%, rgba(255, 76, 86, 0.05) 34%, rgba(255, 76, 86, 0) 66%),
    linear-gradient(0deg, rgba(255, 22, 45, 0.22) 0%, rgba(255, 22, 45, 0.02) 38%, rgba(255, 22, 45, 0.22) 100%);
  transition: opacity 0.1s linear;
}

#damage-flash.active {
  opacity: 1;
}

.hidden {
  display: none !important;
}

.hit {
  animation: hitflash 0.22s ease;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-220px, -120px, 0);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hitflash {
  from {
    filter: saturate(100%);
  }
  45% {
    filter: saturate(200%) brightness(0.68);
  }
  to {
    filter: none;
  }
}

@media (max-width: 1060px) {
  .hud {
    grid-template-columns: repeat(3, minmax(96px, 1fr));
    width: min(500px, calc(100vw - 1.4rem));
  }
}

@media (max-width: 680px) {
  .hud {
    grid-template-columns: repeat(3, minmax(80px, 1fr));
    width: min(360px, calc(100vw - 1.4rem));
  }

  .interaction {
    bottom: 5.4rem;
  }

  .player-life-panel {
    right: 0.65rem;
    bottom: 5.2rem;
  }

  .boss-panel {
    width: min(300px, calc(100vw - 1.3rem));
  }

  .help-panel {
    width: min(400px, calc(100vw - 1.4rem));
  }
}