:root {
  color-scheme: dark;
  --bg: #050816;
  --panel: rgba(8, 13, 34, 0.76);
  --panel-border: rgba(153, 216, 255, 0.24);
  --text: #f4f7ff;
  --muted: #a6b7db;
  --cyan: #51d6ff;
  --green: #5ef0a8;
  --orange: #ffb45c;
  --red: #ff667d;
  --shadow: 0 16px 50px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  min-height: 100dvh;
  background:
    radial-gradient(circle at top, rgba(67, 126, 255, 0.18), transparent 40%),
    radial-gradient(circle at bottom, rgba(0, 255, 200, 0.08), transparent 35%),
    var(--bg);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

body {
  overflow: hidden;
}

.app-shell {
  position: relative;
  width: var(--app-width, 100vw);
  height: var(--app-height, 100dvh);
  max-width: 100vw;
  max-height: 100dvh;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hud,
.mobile-controls,
.overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.top-left,
.top-right,
.mobile-controls,
.modal,
.panel,
.hud-button,
.action-button,
.weapon-button {
  pointer-events: auto;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.panel.compact {
  padding: 12px 14px;
}

.top-left {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  left: max(16px, env(safe-area-inset-left));
}

.top-right {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  min-width: 180px;
}

.edge-meter {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  bottom: max(12px, env(safe-area-inset-bottom));
  width: 14px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  pointer-events: none;
}

.edge-meter-left {
  left: env(safe-area-inset-left);
}

.edge-meter-right {
  right: env(safe-area-inset-right);
}

.meter-fill {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0%;
  transition: height 0.12s linear;
}

.edge-meter.blue .meter-fill {
  background: linear-gradient(180deg, #7de7ff 0%, #1675ff 100%);
}

.edge-meter.green .meter-fill {
  background: linear-gradient(180deg, #9affd2 0%, #14c56f 100%);
}

.hud-button,
.action-button,
.weapon-button {
  border: 0;
  color: var(--text);
  font: inherit;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, opacity 0.12s ease;
}

.hud-button {
  background: linear-gradient(135deg, rgba(81, 214, 255, 0.95), rgba(67, 126, 255, 0.95));
  padding: 12px 18px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.hud-button.small {
  padding: 10px 14px;
}

.hud-button.large {
  padding: 14px 26px;
  font-size: 1.05rem;
}

.hud-button:hover,
.action-button:hover,
.weapon-button:hover,
.hud-button:active,
.action-button:active,
.weapon-button:active {
  transform: translateY(1px) scale(0.985);
}

.resource-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.92rem;
}

.resource-line + .resource-line {
  margin-top: 6px;
}

.resource-line span {
  color: var(--muted);
}

.mobile-controls {
  display: block;
}

.joystick {
  position: absolute;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(30px, calc(env(safe-area-inset-bottom) + 18px));
  width: 96px;
  height: 96px;
  touch-action: none;
}

.joystick-base {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.16);
  touch-action: none;
}

.joystick-thumb {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 38px;
  height: 38px;
  margin-left: -19px;
  margin-top: -19px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(81, 214, 255, 0.92));
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  touch-action: none;
}

.mobile-actions {
  position: absolute;
  left: max(14px, env(safe-area-inset-left));
  bottom: max(30px, calc(env(safe-area-inset-bottom) + 18px));
  display: block;
}

.action-button {
  min-width: 0;
  width: 100%;
  height: 100%;
  padding: 8px;
  font-weight: 700;
  font-size: 0.92rem;
  border-radius: 18px;
}

.action-button.mine {
  background: linear-gradient(135deg, rgba(125, 255, 189, 0.96), rgba(20, 197, 111, 0.96));
}

.action-button.mine:not(.is-active) {
  background: rgba(255, 255, 255, 0.12);
  color: var(--muted);
}

.hidden {
  display: none !important;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(2, 58px);
  grid-template-rows: repeat(2, 58px);
  gap: 6px;
  width: 122px;
  touch-action: manipulation;
}

.weapon-button {
  width: 100%;
  height: 100%;
  padding: 5px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-weight: 700;
  border-radius: 18px;
  font-size: 0.88rem;
}

.weapon-button.is-active {
  background: linear-gradient(135deg, rgba(81, 214, 255, 0.95), rgba(67, 126, 255, 0.95));
}

.mobile-upgrade {
  position: absolute;
  left: max(16px, env(safe-area-inset-left));
  top: max(16px, env(safe-area-inset-top));
}

.overlay {
  display: grid;
  place-items: center;
  background: rgba(4, 7, 16, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease;
}

.overlay-visible,
.overlay:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: min(980px, calc(100vw - 24px));
  max-height: min(88vh, 900px);
  padding: 20px;
  overflow: auto;
}

.modal.centered {
  width: min(460px, calc(100vw - 24px));
  text-align: center;
}

.intro-panel {
  padding: 28px 32px;
  text-align: center;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin: 18px 0 20px;
}

.summary-grid div {
  padding: 12px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 14px;
}

.summary-grid span,
.upgrade-card .muted,
.stat-list span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
}

.upgrade-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.upgrade-card {
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.upgrade-card h3,
.modal h2,
.intro-panel h1 {
  margin: 0 0 10px;
}

.stat-list {
  display: grid;
  gap: 6px;
  margin: 12px 0;
}

.buy-button {
  width: 100%;
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 0;
  background: linear-gradient(135deg, rgba(94, 240, 168, 0.96), rgba(54, 152, 255, 0.96));
  color: #03101c;
  font-weight: 800;
  cursor: pointer;
}

.buy-button:disabled {
  cursor: default;
  opacity: 0.5;
}

.game-over-stats {
  display: grid;
  gap: 12px;
  margin: 18px 0 22px;
  text-align: left;
}

@media (hover: none), (pointer: coarse) {
  .top-left {
    display: none;
  }

  .top-right {
    min-width: 150px;
  }
}

@media (max-width: 720px) {
  .top-right {
    top: max(10px, env(safe-area-inset-top));
    right: max(12px, env(safe-area-inset-right));
    min-width: 138px;
    font-size: 0.8rem;
  }

  .edge-meter {
    width: 8px;
    top: max(8px, env(safe-area-inset-top));
    bottom: max(8px, env(safe-area-inset-bottom));
  }

  .joystick {
    width: 84px;
    height: 84px;
  }

  .joystick-thumb {
    width: 32px;
    height: 32px;
    margin-left: -16px;
    margin-top: -16px;
  }

  .action-grid {
    grid-template-columns: repeat(2, 52px);
    grid-template-rows: repeat(2, 52px);
    width: 110px;
  }

  .weapon-button,
  .action-button {
    min-width: 0;
    min-height: 0;
    padding: 6px;
    font-size: 0.66rem;
  }

  .modal {
    padding: 16px;
    width: min(100vw - 12px, 980px);
  }
}

@media (hover: none), (pointer: coarse) and (orientation: landscape) {
  .top-right {
    top: max(8px, env(safe-area-inset-top));
    right: max(10px, env(safe-area-inset-right));
    min-width: 132px;
    font-size: 0.78rem;
  }

  .joystick {
    right: max(10px, env(safe-area-inset-right));
    bottom: max(12px, calc(env(safe-area-inset-bottom) + 4px));
    width: 74px;
    height: 74px;
  }

  .joystick-thumb {
    width: 28px;
    height: 28px;
    margin-left: -14px;
    margin-top: -14px;
  }

  .mobile-actions {
    left: max(10px, env(safe-area-inset-left));
    bottom: max(12px, calc(env(safe-area-inset-bottom) + 4px));
  }

  .action-grid {
    grid-template-columns: repeat(2, 46px);
    grid-template-rows: repeat(2, 46px);
    width: 98px;
    gap: 6px;
  }

  .weapon-button,
  .action-button {
    font-size: 0.62rem;
    padding: 4px;
  }
}