@font-face {
  font-family: 'PixelSans';
  src: local('Consolas'), local('Menlo'), local('monospace');
}

:root {
  --navy-dark: #0b1026;
  --navy: #141b3d;
  --blue-muted: #2a3a66;
  --teal: #2fb8a6;
  --teal-dark: #17544d;
  --orange: #ff9d4d;
  --orange-deep: #e0672a;
  --cream: #f3ecd8;
  --neon-cyan: #6df0ff;
  --neon-pink: #ff5da2;
  --danger: #ff5d6c;
  --font: 'Courier New', 'PixelSans', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #05070f;
  overflow: hidden;
  font-family: var(--font);
  color: var(--cream);
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

#app {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #05070f;
}

#game-viewport {
  position: relative;
  background: #000;
  overflow: hidden;
  box-shadow: 0 0 0 2px #000, 0 0 40px rgba(0,0,0,0.8);
  image-rendering: pixelated;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  background: var(--navy-dark);
}

/* ---------- HUD ---------- */
#hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  font-size: clamp(10px, 2.2vmin, 15px);
}
#hud.hidden { display: none; }

.hud-top {
  position: absolute;
  top: 0.6em;
  left: 0.6em;
  right: 0.6em;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8em;
}

.hud-group {
  display: flex;
  align-items: center;
  gap: 0.35em;
  background: rgba(11, 16, 38, 0.55);
  border: 1px solid rgba(111, 240, 255, 0.18);
  padding: 0.3em 0.55em;
  border-radius: 3px;
  backdrop-filter: blur(2px);
}

.hud-health { gap: 0.25em; }
.cell-icon {
  width: 1.1em; height: 1.1em;
  border: 2px solid var(--cream);
  background: var(--teal);
  box-shadow: 0 0 6px rgba(47,184,166,0.8);
  border-radius: 2px;
}
.cell-icon.empty {
  background: transparent;
  border-color: rgba(243,236,216,0.3);
  box-shadow: none;
}

.hud-icon.icon-bit {
  width: 0.9em; height: 0.9em;
  background: var(--orange);
  transform: rotate(45deg);
  box-shadow: 0 0 6px rgba(255,157,77,0.9);
  display: inline-block;
}

.hud-cores { gap: 0.3em; }
.core-icon {
  width: 0.8em; height: 0.8em;
  border-radius: 50%;
  border: 2px solid rgba(243,236,216,0.4);
  background: transparent;
}
.core-icon.filled {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 6px rgba(109,240,255,0.9);
}

.hud-bottom-left {
  position: absolute;
  bottom: 0.7em;
  left: 0.7em;
}
.dash-meter {
  width: 5em;
  height: 0.55em;
  background: rgba(11,16,38,0.6);
  border: 1px solid rgba(255,157,77,0.35);
  border-radius: 3px;
  overflow: hidden;
}
.dash-meter-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--orange-deep), var(--orange));
  transition: width 0.05s linear;
}
.dash-meter-fill.ready {
  box-shadow: 0 0 8px rgba(255,157,77,0.9);
}

.hud-level-name {
  position: absolute;
  top: 0.6em;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.85em;
  letter-spacing: 0.12em;
  color: rgba(243,236,216,0.55);
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}
.hud-level-name.show { opacity: 1; }

#btn-pause-ingame {
  position: absolute;
  top: 0.6em;
  right: 0.6em;
  z-index: 5;
}
#btn-pause-ingame.hidden { display: none; }

.icon-btn {
  pointer-events: auto;
  background: rgba(11,16,38,0.6);
  border: 1px solid rgba(243,236,216,0.25);
  color: var(--cream);
  font-family: var(--font);
  padding: 0.4em 0.7em;
  border-radius: 3px;
  cursor: pointer;
  font-size: clamp(10px, 2vmin, 14px);
}
.icon-btn:hover, .icon-btn:focus-visible { border-color: var(--neon-cyan); color: var(--neon-cyan); outline: none; }

/* ---------- Touch Controls ---------- */
#touch-controls {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 6;
}
#touch-controls.hidden { display: none; }
.touch-dpad {
  position: absolute;
  left: 0.8em;
  bottom: 0.8em;
  display: flex;
  gap: 0.6em;
}
.touch-actions {
  position: absolute;
  right: 0.8em;
  bottom: 0.8em;
  display: flex;
  align-items: flex-end;
  gap: 0.7em;
}
.touch-btn {
  pointer-events: auto;
  background: rgba(20, 27, 61, 0.55);
  border: 2px solid rgba(243,236,216,0.35);
  color: var(--cream);
  font-family: var(--font);
  font-size: 14px;
  width: 3.4em;
  height: 3.4em;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.touch-btn:active, .touch-btn.pressed {
  background: rgba(47,184,166,0.4);
  border-color: var(--teal);
}
.touch-btn-round {
  border-radius: 50%;
  font-size: 10px;
  font-weight: bold;
}
.touch-btn-jump { width: 4em; height: 4em; }

@media (min-width: 900px) and (pointer: fine) {
  #touch-controls { display: none !important; }
}

/* ---------- Screens ---------- */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 30%, #16204a 0%, #080b1c 75%);
  z-index: 10;
}
.screen.hidden { display: none; }
.screen.overlay-screen { background: rgba(5, 7, 15, 0.82); }

/* Loading */
.loading-wrap { display: flex; flex-direction: column; align-items: center; gap: 1.1em; }
.logo-mark {
  font-size: 2.2em;
  letter-spacing: 0.3em;
  color: var(--teal);
  text-shadow: 0 0 14px rgba(47,184,166,0.8);
  font-weight: bold;
}
.loading-bar {
  width: 14em; height: 0.5em;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(243,236,216,0.2);
  border-radius: 3px;
  overflow: hidden;
}
.loading-bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--teal-dark), var(--teal));
  transition: width 0.2s ease;
}
.loading-label { font-size: 0.75em; letter-spacing: 0.15em; color: rgba(243,236,216,0.5); }

/* Menu */
.crt-flicker {
  position: absolute; inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.06) 0px, rgba(0,0,0,0.06) 1px, transparent 1px, transparent 3px);
  mix-blend-mode: overlay;
  opacity: 0.5;
}
.menu-content {
  display: flex; flex-direction: column; align-items: center;
  gap: 1.6em;
  z-index: 1;
  animation: fadeIn 0.5s ease;
}
.title-block { text-align: center; }
.title-main {
  font-size: clamp(28px, 7vmin, 56px);
  letter-spacing: 0.14em;
  font-weight: bold;
  color: var(--cream);
  text-shadow: 3px 3px 0 var(--orange-deep), 0 0 24px rgba(255,157,77,0.35);
}
.title-sub {
  font-size: clamp(12px, 2.4vmin, 18px);
  letter-spacing: 0.5em;
  color: var(--teal);
  margin-top: 0.3em;
  text-shadow: 0 0 10px rgba(47,184,166,0.7);
}
.menu-buttons { display: flex; flex-direction: column; gap: 0.7em; width: min(80vw, 20em); }
.menu-btn {
  font-family: var(--font);
  font-size: clamp(12px, 2vmin, 16px);
  letter-spacing: 0.12em;
  padding: 0.75em 1em;
  background: rgba(20,27,61,0.7);
  border: 1px solid rgba(243,236,216,0.25);
  color: var(--cream);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.12s ease;
}
.menu-btn:hover, .menu-btn:focus-visible {
  border-color: var(--teal);
  color: var(--teal);
  background: rgba(47,184,166,0.12);
  transform: translateX(3px);
  outline: none;
}
.menu-btn.primary {
  border-color: var(--orange);
  color: var(--orange);
}
.menu-btn.primary:hover, .menu-btn.primary:focus-visible {
  background: rgba(255,157,77,0.15);
  color: var(--cream);
}
.menu-footer { font-size: 0.65em; color: rgba(243,236,216,0.35); letter-spacing: 0.08em; }

/* Panels (level select / settings / how to play) */
.panel-header {
  display: flex; align-items: center; gap: 1em;
  width: min(90vw, 40em);
  padding: 1em 0.4em 0.6em;
}
.panel-header h2 {
  margin: 0; font-size: clamp(14px, 2.6vmin, 20px); letter-spacing: 0.15em; color: var(--cream);
}
.back-btn {
  font-family: var(--font);
  background: transparent;
  border: 1px solid rgba(243,236,216,0.25);
  color: var(--cream);
  padding: 0.4em 0.7em;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.7em;
}
.back-btn:hover, .back-btn:focus-visible { border-color: var(--teal); color: var(--teal); outline: none; }

.level-cards {
  display: flex; gap: 1em; flex-wrap: wrap; justify-content: center;
  width: min(90vw, 46em);
  padding: 0.5em;
  overflow-y: auto;
}
.level-card {
  width: 12.5em;
  background: rgba(20,27,61,0.65);
  border: 1px solid rgba(243,236,216,0.2);
  border-radius: 6px;
  padding: 0.9em;
  cursor: pointer;
  transition: all 0.12s ease;
  text-align: left;
}
.level-card:hover, .level-card:focus-visible { border-color: var(--teal); transform: translateY(-2px); outline: none; }
.level-card.locked { opacity: 0.45; cursor: not-allowed; }
.level-card.locked:hover { transform: none; border-color: rgba(243,236,216,0.2); }
.level-card-theme {
  height: 3.2em; border-radius: 4px; margin-bottom: 0.6em;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65em; letter-spacing: 0.1em; color: rgba(255,255,255,0.7);
}
.theme-meadow { background: linear-gradient(160deg, #1d5f4f, #2fb8a6); }
.theme-cavern { background: linear-gradient(160deg, #0e1230, #2a3a66); }
.theme-tower { background: linear-gradient(160deg, #3a1030, #e0672a); }
.level-card-title { font-size: 0.85em; letter-spacing: 0.06em; margin-bottom: 0.3em; }
.level-card-sub { font-size: 0.65em; color: rgba(243,236,216,0.5); margin-bottom: 0.5em; }
.level-card-stats { font-size: 0.6em; color: rgba(243,236,216,0.7); display: flex; flex-direction: column; gap: 0.2em; }
.level-card-lock { font-size: 0.6em; color: var(--danger); }

.htp-content, .settings-content {
  width: min(90vw, 40em);
  display: flex; gap: 2em; padding: 1em;
  flex-wrap: wrap;
}
.htp-col { flex: 1; min-width: 14em; }
.htp-row {
  display: flex; justify-content: space-between; gap: 1em;
  padding: 0.5em 0; border-bottom: 1px solid rgba(243,236,216,0.1);
  font-size: 0.8em;
}
.htp-row .key {
  color: var(--teal); font-size: 0.85em; letter-spacing: 0.03em;
}
.htp-col p { font-size: 0.75em; line-height: 1.5; color: rgba(243,236,216,0.8); }

.settings-content { flex-direction: column; gap: 0.9em; }
.setting-row {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.85em; gap: 1em;
  padding: 0.5em 0;
  border-bottom: 1px solid rgba(243,236,216,0.1);
}
.slider {
  width: 10em; accent-color: var(--teal);
}
.toggle { width: 1.3em; height: 1.3em; accent-color: var(--teal); }

/* Pause / Game Over / Level Complete panel box */
.panel-box {
  background: rgba(11,16,38,0.9);
  border: 1px solid rgba(243,236,216,0.2);
  border-radius: 8px;
  padding: 1.8em 2.2em;
  text-align: center;
  min-width: 16em;
  animation: popIn 0.22s ease;
}
.panel-box h2 {
  margin: 0 0 1em;
  letter-spacing: 0.15em;
  font-size: 1.3em;
  color: var(--cream);
}
.gameover-title {
  color: var(--danger);
  text-shadow: 0 0 16px rgba(255,93,108,0.6);
  animation: glitchText 2.5s infinite;
}
.complete-box h2 {
  color: var(--teal);
  text-shadow: 0 0 16px rgba(47,184,166,0.6);
}
.complete-stats {
  display: flex; flex-direction: column; gap: 0.4em;
  margin-bottom: 1.2em;
  font-size: 0.85em;
}
.stat-row { display: flex; justify-content: space-between; gap: 2em; color: rgba(243,236,216,0.85); }
.stat-row span:last-child { color: var(--orange); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px);} to { opacity: 1; transform: translateY(0);} }
@keyframes popIn { from { opacity: 0; transform: scale(0.92);} to { opacity: 1; transform: scale(1);} }
@keyframes glitchText {
  0%, 92%, 100% { transform: translate(0,0); }
  93% { transform: translate(-2px, 1px); }
  94% { transform: translate(2px, -1px); }
  95% { transform: translate(-1px, 0); }
}

/* Focus visibility for accessibility */
button:focus-visible, input:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* reduced motion */
.reduced-motion .crt-flicker { display: none; }
.reduced-motion * { animation-duration: 0.001s !important; }

@media (max-width: 700px) {
  .htp-content { gap: 1em; }
  .level-cards { gap: 0.6em; }
  .level-card { width: 9.5em; padding: 0.6em; }
}