:root {
  --bg-a: #060814;
  --bg-b: #0d1330;
  --card: rgba(10, 16, 34, 0.86);
  --card-border: rgba(147, 199, 255, 0.22);
  --ink: #eff7ff;
  --muted: #9cb6d3;
  --accent: #52d8ff;
  --accent-2: #6bffbe;
  --danger: #ff6f87;
  --warn: #ffad5b;
  --mx: 0px;
  --my: 0px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background: #050813;
  overflow: hidden;
  caret-color: transparent;
}

input,
textarea {
  caret-color: auto;
}

#menu-bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  display: none;
}

body.mode-menu #menu-bg-canvas {
  display: block;
}

body.mode-play #menu-bg-canvas {
  display: none;
}

#starfield-layer {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 20% 18%, rgba(180, 229, 255, 0.42) 0 1px, transparent 2px),
    radial-gradient(circle at 66% 40%, rgba(180, 229, 255, 0.38) 0 1px, transparent 2px),
    radial-gradient(circle at 40% 70%, rgba(180, 229, 255, 0.3) 0 1px, transparent 2px),
    radial-gradient(circle at 75% 85%, rgba(180, 229, 255, 0.35) 0 1px, transparent 2px);
  opacity: 0.8;
  animation: stars-drift-main 24s linear infinite;
  transform: translate3d(calc(var(--mx) * 0.14), calc(var(--my) * 0.14), 0) translateY(0);
  transition: transform 90ms ease;
  pointer-events: none;
  z-index: 0;
}

#menu-floaters {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

#starfield-layer,
#menu-floaters {
  display: none !important;
  pointer-events: none;
}

.menu-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.menu-meta-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.menu-audio-toggle {
  border: 1px solid rgba(147, 199, 255, 0.36);
  background: rgba(8, 15, 30, 0.72);
  color: #d3efff;
  border-radius: 999px;
  padding: 5px 10px;
  min-width: 94px;
  white-space: nowrap;
  font-family: "Orbitron", sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  line-height: 1;
}

.menu-audio-toggle[data-muted="true"] {
  color: #9cb6d3;
  border-color: rgba(147, 199, 255, 0.24);
  background: rgba(8, 13, 23, 0.6);
}

.menu-audio-toggle[data-blocked="true"] {
  min-width: 212px;
  font-size: 0.6rem;
  letter-spacing: 0.03em;
}

.bg-fps-indicator {
  font-family: "Orbitron", sans-serif;
  font-size: 0.78rem;
  color: #b5e2ff;
  background: rgba(7, 16, 36, 0.78);
  border: 1px solid rgba(148, 204, 255, 0.28);
  border-radius: 999px;
  padding: 5px 10px;
}

.bg-fps-indicator strong {
  color: #9cffcc;
}

.ui-state-dev {
  font-family: "Orbitron", sans-serif;
  font-size: 0.72rem;
  color: #e4f3ff;
  background: rgba(7, 16, 36, 0.72);
  border: 1px solid rgba(148, 204, 255, 0.24);
  border-radius: 999px;
  padding: 4px 9px;
}

.menu-floater {
  position: absolute;
  left: 0;
  top: 0;
  border-radius: 999px;
  opacity: var(--float-opacity, 0.35);
  filter: blur(var(--float-blur, 0px));
  animation: floater-drift var(--float-duration, 28s) linear infinite;
  animation-delay: var(--float-delay, 0s);
  transform: translate3d(calc(var(--mx) * var(--px, 0.03)), calc(var(--my) * var(--py, 0.03)), 0);
}

.menu-floater.orb {
  width: var(--float-size, 20px);
  height: var(--float-size, 20px);
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.85), rgba(116, 171, 255, 0.35) 45%, rgba(116, 171, 255, 0.08) 100%);
  box-shadow: 0 0 14px rgba(116, 171, 255, 0.4);
}

.menu-floater.planet {
  width: var(--float-size, 34px);
  height: calc(var(--float-size, 34px) * 0.76);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 35%, rgba(255, 212, 155, 0.88), rgba(255, 145, 98, 0.38) 55%, rgba(255, 145, 98, 0.12) 100%);
}

.menu-floater.planet::after {
  content: "";
  position: absolute;
  inset: 44% -18% auto -18%;
  height: 2px;
  border: 1px solid rgba(255, 210, 180, 0.55);
  border-radius: 999px;
  transform: rotate(-9deg);
}

.menu-floater.debris {
  width: var(--float-size, 18px);
  height: calc(var(--float-size, 18px) * 0.7);
  background: linear-gradient(140deg, rgba(171, 210, 255, 0.62), rgba(107, 147, 198, 0.2));
  border-radius: 2px;
  transform: rotate(var(--float-rot, 22deg));
}

.menu-floater.enemy {
  width: var(--float-size, 18px);
  height: var(--float-size, 18px);
  background: linear-gradient(160deg, rgba(255, 180, 133, 0.64), rgba(255, 96, 96, 0.2));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

@keyframes floater-drift {
  0% {
    transform: translate3d(calc(var(--mx) * var(--px, 0.03)), calc(var(--my) * var(--py, 0.03)), 0) translateY(0);
  }
  50% {
    transform: translate3d(calc(var(--mx) * var(--px, 0.03)), calc(var(--my) * var(--py, 0.03)), 0) translateY(-20px);
  }
  100% {
    transform: translate3d(calc(var(--mx) * var(--px, 0.03)), calc(var(--my) * var(--py, 0.03)), 0) translateY(0);
  }
}

#starfield-layer::before,
#starfield-layer::after {
  content: "";
  position: absolute;
  inset: -8%;
  pointer-events: none;
}

#starfield-layer::before {
  background-image: radial-gradient(circle at 25% 20%, rgba(123, 199, 255, 0.24) 0 1px, transparent 2px),
    radial-gradient(circle at 60% 32%, rgba(123, 199, 255, 0.2) 0 1px, transparent 2px),
    radial-gradient(circle at 45% 80%, rgba(123, 199, 255, 0.18) 0 1px, transparent 2px);
  transform: translate3d(calc(var(--mx) * -0.06), calc(var(--my) * -0.06), 0) translateY(0);
  animation: stars-drift-near 17s linear infinite;
}

#starfield-layer::after {
  background: radial-gradient(circle at 15% 10%, rgba(82, 216, 255, 0.13) 0%, transparent 43%),
    radial-gradient(circle at 82% 88%, rgba(107, 255, 190, 0.1) 0%, transparent 40%);
  transform: translate3d(calc(var(--mx) * 0.03), calc(var(--my) * 0.03), 0) translateY(0);
  animation: stars-drift-far 31s linear infinite;
}

body.mode-play #starfield-layer {
  opacity: 0;
  transform: translate3d(0, 0, 0);
  animation-play-state: paused;
}

body.mode-play #menu-floaters {
  opacity: 0;
  animation-play-state: paused;
}

body.mode-play #starfield-layer::before,
body.mode-play #starfield-layer::after,
body.mode-play #menu-floaters .menu-floater {
  animation-play-state: paused;
}

@keyframes stars-drift-main {
  0% {
    transform: translate3d(calc(var(--mx) * 0.14), calc(var(--my) * 0.14), 0) translateY(0);
  }
  100% {
    transform: translate3d(calc(var(--mx) * 0.14), calc(var(--my) * 0.14), 0) translateY(44px);
  }
}

@keyframes stars-drift-near {
  0% {
    transform: translate3d(calc(var(--mx) * -0.06), calc(var(--my) * -0.06), 0) translateY(0);
  }
  100% {
    transform: translate3d(calc(var(--mx) * -0.06), calc(var(--my) * -0.06), 0) translateY(56px);
  }
}

@keyframes stars-drift-far {
  0% {
    transform: translate3d(calc(var(--mx) * 0.03), calc(var(--my) * 0.03), 0) translateY(0);
  }
  100% {
    transform: translate3d(calc(var(--mx) * 0.03), calc(var(--my) * 0.03), 0) translateY(26px);
  }
}

#app-shell {
  position: relative;
  z-index: 2;
  width: min(1460px, 100vw);
  height: 100vh;
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: 16px;
}

.panel {
  width: min(480px, 100%);
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(6px);
}

.panel-wide {
  width: min(920px, 100%);
}

.title {
  margin: 0 0 10px;
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2rem, 6vw, 3.3rem);
  letter-spacing: 0.08em;
}

.subtitle {
  margin: 0 0 14px;
  color: var(--muted);
}

.field {
  display: grid;
  gap: 8px;
  margin: 10px 0 16px;
}

.menu-primary-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 10px;
  margin: 10px 0 14px;
}

.menu-primary-row .field {
  margin: 0;
}

.menu-primary-row #play-button {
  min-width: 118px;
}

select,
input,
button {
  font: inherit;
}

select,
input {
  width: 100%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
  border: 1px solid rgba(147, 199, 255, 0.35);
  border-radius: 10px;
  padding: 10px 12px;
}

select {
  background-color: rgba(12, 22, 46, 0.95);
  color: #eef7ff;
}

select option {
  background: #dce8ff;
  color: #071225;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.primary {
  background: linear-gradient(90deg, var(--accent), #8c9dff);
  color: #04101f;
  font-weight: 700;
}

.ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
}

.menu-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.menu-actions > button {
  width: 100%;
}

.game-root {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 1;
  padding: 6px 10px 10px;
}

#game-root canvas,
.game-root canvas {
  border: 1px solid rgba(142, 212, 255, 0.2);
  border-radius: 12px;
  box-shadow: 0 22px 56px rgba(0, 0, 0, 0.42);
  image-rendering: auto;
  filter: drop-shadow(0 0 8px rgba(0, 255, 255, 0.14)) contrast(1.1) saturate(1.12) brightness(1.02);
  outline: none;
  width: min(96vw, 1360px) !important;
  height: auto !important;
  max-height: 86vh;
}

.hidden {
  display: none !important;
}

#hud {
  position: absolute;
  top: 12px;
  left: 14px;
  right: 132px;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(7, minmax(82px, 1fr));
  gap: 8px;
}

.hud-heartbeat {
  position: absolute;
  right: -18px;
  top: 8px;
  color: #8dffc1;
  font-size: 0.95rem;
  opacity: 0.2;
  text-shadow: 0 0 7px rgba(141, 255, 193, 0.55);
  transition: opacity 140ms ease;
}

.hud-heartbeat.blink {
  opacity: 1;
}

.hud-item {
  background: rgba(8, 14, 32, 0.82);
  border: 1px solid rgba(147, 199, 255, 0.3);
  border-radius: 10px;
  padding: 7px 8px;
}

.hud-item .label {
  display: block;
  font-size: 0.84rem;
  color: var(--muted);
}

.hud-item .value {
  display: block;
  font-size: 1.16rem;
  font-family: "Orbitron", sans-serif;
  line-height: 1.2;
}

.hud-item-wide {
  min-width: 150px;
}

.hud-item-combo .value {
  color: #c8f8ff;
  text-shadow: 0 0 10px rgba(120, 238, 255, 0.35);
}

.hud-item-combo {
  min-width: 88px;
  padding: 6px 8px;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.hud-item-combo.combo-tier-1 {
  background: linear-gradient(135deg, rgba(14, 37, 50, 0.9), rgba(8, 24, 40, 0.88));
  border-color: rgba(122, 225, 255, 0.34);
  box-shadow: inset 0 0 0 1px rgba(78, 196, 230, 0.16), 0 0 10px rgba(77, 201, 228, 0.14);
}

.hud-item-combo.combo-tier-2 {
  background: linear-gradient(135deg, rgba(41, 17, 51, 0.92), rgba(28, 12, 42, 0.9));
  border-color: rgba(221, 144, 255, 0.36);
  box-shadow: inset 0 0 0 1px rgba(195, 116, 255, 0.2), 0 0 12px rgba(201, 101, 255, 0.18);
}

.hud-item-combo.combo-tier-3 {
  background: linear-gradient(135deg, rgba(63, 38, 12, 0.94), rgba(44, 25, 8, 0.92));
  border-color: rgba(255, 197, 106, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 175, 62, 0.22), 0 0 14px rgba(255, 170, 75, 0.2);
}

.combo-value-tier-1 {
  color: #c7f7ff;
  text-shadow: 0 0 10px rgba(100, 234, 255, 0.34);
}

.combo-value-tier-2 {
  color: #f0c5ff;
  text-shadow: 0 0 12px rgba(222, 132, 255, 0.35);
}

.combo-value-tier-3 {
  color: #ffd8a0;
  text-shadow: 0 0 12px rgba(255, 186, 82, 0.38);
}

.score-bump {
  animation: score-pulse 230ms ease;
}

@keyframes score-pulse {
  0% {
    transform: scale(1);
    color: var(--ink);
  }
  50% {
    transform: scale(1.1);
    color: var(--accent-2);
  }
  100% {
    transform: scale(1);
  }
}

.streak-hot-1 {
  text-shadow: 0 0 10px rgba(82, 216, 255, 0.65);
}

.streak-hot-2 {
  text-shadow: 0 0 14px rgba(82, 216, 255, 0.75), 0 0 20px rgba(107, 255, 190, 0.6);
}

.streak-hot-3 {
  text-shadow: 0 0 18px rgba(82, 216, 255, 0.85), 0 0 26px rgba(107, 255, 190, 0.75), 0 0 32px rgba(107, 255, 190, 0.65);
}

.combo-pop {
  animation: combo-pop 220ms ease;
}

@keyframes combo-pop {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.16);
  }
  100% {
    transform: scale(1);
  }
}

.back-button {
  position: absolute;
  right: 14px;
  top: 12px;
  z-index: 4;
  background: rgba(9, 15, 29, 0.85);
  color: var(--ink);
  border: 1px solid rgba(147, 199, 255, 0.33);
  min-width: 98px;
}

.powerup-buttons {
  position: absolute;
  left: 50%;
  bottom: 104px;
  transform: translateX(-50%);
  z-index: 5;
  display: grid;
  grid-auto-flow: column;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(147, 199, 255, 0.34);
  border-radius: 12px;
  background: rgba(8, 14, 32, 0.68);
  backdrop-filter: blur(3px);
  pointer-events: auto;
}

.powerup-btn {
  min-width: 156px;
  text-align: left;
  font-family: "Orbitron", sans-serif;
  font-size: 0.78rem;
  background: rgba(9, 15, 29, 0.82);
  color: #dff0ff;
  border: 1px solid rgba(147, 199, 255, 0.4);
  border-radius: 10px;
  padding: 8px 10px;
}

.powerup-btn:disabled {
  opacity: 0.42;
  filter: saturate(0.5);
  cursor: default;
}

.powerup-btn.ready {
  border-color: rgba(155, 255, 191, 0.62);
  box-shadow: 0 0 10px rgba(155, 255, 191, 0.2);
}

.powerup-btn.active {
  border-color: rgba(255, 186, 126, 0.72);
  box-shadow: 0 0 12px rgba(255, 186, 126, 0.28);
}

.modal {
  position: absolute;
  inset: 0;
  z-index: 7;
  display: grid;
  place-items: center;
  background: rgba(3, 6, 14, 0.65);
  padding: 14px;
}

#orb-modal[hidden] {
  display: none !important;
}

.orb-result-flash {
  position: absolute;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  display: grid;
  place-items: center;
  opacity: 0;
}

.orb-result-flash.show {
  opacity: 1;
}

.orb-result-flash.success {
  animation: orb-flash-success 220ms ease;
}

.orb-result-flash.miss {
  animation: orb-flash-miss 220ms ease;
}

.orb-result-label {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.8rem, 6vw, 3rem);
  letter-spacing: 0.12em;
  opacity: 0;
  transform: scale(0.88);
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.5);
}

.orb-result-label.show {
  opacity: 1;
  animation: orb-label-pop 220ms ease;
}

.orb-result-flash.success .orb-result-label {
  color: #9bffbf;
}

.orb-result-flash.miss .orb-result-label {
  color: #ff9da9;
}

@keyframes orb-flash-success {
  0% {
    background: rgba(107, 255, 190, 0);
  }
  35% {
    background: rgba(107, 255, 190, 0.25);
  }
  100% {
    background: rgba(107, 255, 190, 0);
  }
}

@keyframes orb-flash-miss {
  0% {
    background: rgba(255, 84, 105, 0);
  }
  35% {
    background: rgba(255, 84, 105, 0.24);
  }
  100% {
    background: rgba(255, 84, 105, 0);
  }
}

@keyframes orb-label-pop {
  0% {
    transform: scale(0.84);
  }
  55% {
    transform: scale(1.06);
  }
  100% {
    transform: scale(1);
  }
}

.modal-card {
  width: min(460px, 100%);
  background: rgba(8, 12, 28, 0.96);
  border: 1px solid rgba(147, 199, 255, 0.3);
  border-radius: 14px;
  padding: 18px;
}

.orb-card {
  width: min(560px, 100%);
}

.meta-row {
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
}

#name-counter.invalid,
#name-warning.invalid {
  color: var(--danger);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.choices {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.choice-button {
  text-align: left;
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
  border: 1px solid rgba(147, 199, 255, 0.3);
}

.orb-timer {
  position: relative;
  margin-bottom: 10px;
  height: 26px;
  border-radius: 999px;
  border: 1px solid rgba(255, 197, 118, 0.6);
  background: rgba(30, 17, 8, 0.65);
  overflow: hidden;
  font-family: "Orbitron", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb-timer-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, rgba(255, 174, 88, 0.82), rgba(255, 208, 117, 0.92));
  box-shadow: 0 0 14px rgba(255, 185, 102, 0.45);
  transition: width 80ms linear;
}

.orb-countdown-text {
  position: relative;
  z-index: 1;
  color: #ffe7bf;
  font-size: 0.88rem;
  text-shadow: 0 0 6px rgba(0, 0, 0, 0.75);
}

#orb-typing-wrap {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

#orb-typing-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.table-wrap {
  max-height: min(50vh, 420px);
  overflow: auto;
  border: 1px solid rgba(147, 199, 255, 0.23);
  border-radius: 10px;
  margin-bottom: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid rgba(147, 199, 255, 0.16);
  padding: 8px;
  text-align: left;
  font-size: 0.9rem;
}

th {
  position: sticky;
  top: 0;
  background: #121a36;
  font-family: "Orbitron", sans-serif;
  font-size: 0.8rem;
}

.difficulty-badge {
  display: inline-block;
  font-family: "Orbitron", sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  border-radius: 999px;
  padding: 4px 9px;
  border: 1px solid rgba(160, 215, 255, 0.55);
  background: rgba(24, 36, 69, 0.72);
}

.difficulty-badge.easy {
  color: #aee0ff;
  border-color: rgba(140, 206, 255, 0.68);
  background: rgba(20, 58, 96, 0.6);
}

.difficulty-badge.normal {
  color: #9fffdc;
  border-color: rgba(115, 255, 208, 0.65);
  background: rgba(20, 83, 78, 0.56);
}

.difficulty-badge.hard {
  color: #ffe7a9;
  border-color: rgba(255, 214, 109, 0.82);
  background: rgba(114, 76, 18, 0.62);
  box-shadow: 0 0 14px rgba(255, 206, 88, 0.36);
}

.howto-list {
  margin-top: 0;
  margin-bottom: 14px;
  color: var(--muted);
}

.toast {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translate(-50%, 16px);
  opacity: 0;
  z-index: 8;
  pointer-events: none;
  transition: all 180ms ease;
  background: rgba(9, 14, 31, 0.94);
  border: 1px solid rgba(147, 199, 255, 0.3);
  border-radius: 10px;
  padding: 8px 12px;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast.ok {
  border-color: rgba(107, 255, 190, 0.5);
}

.toast.warn {
  border-color: rgba(255, 173, 91, 0.5);
}

.toast.error {
  border-color: rgba(255, 111, 135, 0.6);
}

#hit-pulse {
  position: fixed;
  inset: 0;
  z-index: 6;
  pointer-events: none;
  background: rgba(255, 40, 60, 0);
}

#hit-pulse.active {
  animation: hit-flash 220ms ease;
}

#hit-pulse.kill {
  animation: kill-flash 160ms ease;
}

#hit-pulse.shield {
  animation: shield-flash 200ms ease;
}

body.difficulty-hard #hit-pulse.kill,
body.difficulty-hard #hit-pulse.shield {
  animation: none;
}

body.difficulty-hard #hit-pulse.active {
  animation: hit-flash-hard 170ms ease;
}

@keyframes hit-flash {
  0% {
    background: rgba(255, 40, 60, 0);
  }
  28% {
    background: rgba(255, 40, 60, 0.23);
  }
  100% {
    background: rgba(255, 40, 60, 0);
  }
}

@keyframes kill-flash {
  0% {
    background: rgba(82, 216, 255, 0);
  }
  45% {
    background: rgba(82, 216, 255, 0.15);
  }
  100% {
    background: rgba(82, 216, 255, 0);
  }
}

@keyframes shield-flash {
  0% {
    background: rgba(107, 255, 190, 0);
  }
  35% {
    background: rgba(107, 255, 190, 0.2);
  }
  100% {
    background: rgba(107, 255, 190, 0);
  }
}

@keyframes hit-flash-hard {
  0% {
    background: rgba(255, 40, 60, 0);
  }
  35% {
    background: rgba(255, 40, 60, 0.12);
  }
  100% {
    background: rgba(255, 40, 60, 0);
  }
}

.selftest-overlay {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 8;
  background: rgba(8, 12, 28, 0.9);
  border: 1px solid rgba(147, 199, 255, 0.4);
  border-radius: 8px;
  padding: 8px 10px;
}

.debug-overlay {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 8;
  min-width: 240px;
  max-width: min(48vw, 420px);
  background: rgba(8, 12, 28, 0.9);
  border: 1px solid rgba(147, 199, 255, 0.4);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.8rem;
  line-height: 1.35;
  white-space: pre-line;
}

.freeze-hud {
  position: absolute;
  left: 14px;
  top: 78px;
  z-index: 8;
  min-width: 260px;
  max-width: min(60vw, 520px);
  background: rgba(7, 12, 26, 0.88);
  border: 1px solid rgba(145, 198, 255, 0.42);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.78rem;
  line-height: 1.35;
  white-space: pre-line;
  color: #d8ecff;
  pointer-events: none;
}

.spawn-ok-indicator {
  position: absolute;
  left: 50%;
  top: 18%;
  transform: translate(-50%, 0);
  z-index: 9;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid rgba(125, 255, 182, 0.6);
  background: rgba(10, 32, 18, 0.85);
  color: #b8ffd3;
  font-family: "Orbitron", sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  box-shadow: 0 0 16px rgba(125, 255, 182, 0.3);
}

.stall-indicator {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  z-index: 10;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 138, 138, 0.78);
  background: rgba(46, 8, 8, 0.9);
  color: #ffb1b1;
  font-family: "Orbitron", sans-serif;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}

.runtime-error-overlay {
  position: fixed;
  right: 12px;
  top: 12px;
  z-index: 1200;
  min-width: 260px;
  max-width: min(46vw, 520px);
  max-height: 44vh;
  overflow: auto;
  white-space: pre-wrap;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.76rem;
  line-height: 1.35;
  color: #ffd9d9;
  background: rgba(28, 7, 14, 0.92);
  border: 1px solid rgba(255, 139, 139, 0.58);
  border-radius: 8px;
  padding: 8px 10px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.selftest-overlay.fail {
  border-color: rgba(255, 111, 135, 0.7);
}

@media (max-width: 920px) {
  #hud {
    right: 10px;
    grid-template-columns: repeat(2, minmax(130px, 1fr));
  }
}

@media (max-width: 640px) {
  .panel {
    padding: 16px;
  }

  .modal-actions {
    flex-direction: column;
  }

  .menu-primary-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
  }

  .menu-primary-row #play-button {
    min-width: 98px;
  }

  #hud {
    top: 10px;
    left: 10px;
    right: 10px;
    gap: 8px;
  }

  .back-button {
    top: auto;
    bottom: 10px;
  }

  .powerup-buttons {
    left: 50%;
    right: auto;
    top: auto;
    bottom: 92px;
    transform: translateX(-50%);
    grid-auto-flow: row;
    width: min(92vw, 360px);
  }

  .powerup-btn {
    min-width: 0;
    width: 100%;
  }
}
/* Sprint 0.0.28 visual polish */
#hud .hud-item {
  box-shadow:
    inset 0 0 0 1px rgba(178, 230, 255, 0.12),
    0 4px 14px rgba(20, 53, 95, 0.24);
}

#hud .hud-item .value {
  text-shadow:
    0 0 8px rgba(183, 233, 255, 0.22),
    0 0 2px rgba(255, 255, 255, 0.45);
}

#game-root {
  position: relative;
  overflow: hidden;
}

#game-root::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.028) 0px,
      rgba(255, 255, 255, 0.028) 1px,
      rgba(0, 0, 0, 0) 2px,
      rgba(0, 0, 0, 0) 4px
    ),
    radial-gradient(120% 80% at 50% 120%, rgba(82, 168, 255, 0.08), rgba(82, 168, 255, 0));
  mix-blend-mode: screen;
  opacity: 0.22;
  z-index: 2;
}