:root {
  --color-bg: #050510;
  --color-grid: #0f0f20;
  --color-primary: #4cc9f0;
  --color-accent: #f72585;
  --color-text: #e0e0e0;
  --color-hud-bg: rgba(0, 0, 0, 0.7);
  --font-family: 'Courier New', Courier, monospace;
  --item-roach: #ff9500;
  --item-ant: #ff3b30;
  --item-mosquito: #32ade6;
  --item-trash: #a2845e;
  --item-poison: #af52de;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  overscroll-behavior: none;
  display: flex;
  justify-content: center;
  align-items: center;
}

#game-container {
  display: grid;
  grid-template-areas:
    'hud hud'
    'game panel'
    'seo seo';
  grid-template-columns: 1fr 340px;
  grid-template-rows: auto 1fr auto;
  width: 100%;
  height: 100%;
  max-width: 1280px;
  max-height: 800px;
  background: var(--color-bg);
  border: 1px solid var(--color-grid);
  overscroll-behavior: none;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

#hud {
  grid-area: hud;
  background: var(--color-hud-bg);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  font-size: 1.2rem;
  color: var(--color-primary);
  text-shadow: 0 0 10px var(--color-primary);
  border-bottom: 1px solid var(--color-grid);
  z-index: 10;
  flex-wrap: wrap;
  padding: 0 1rem;
  min-height: 50px;
  user-select: none;
  -webkit-user-select: none;
}

.hud-item {
  white-space: nowrap;
}

.hud-action {
  margin-left: auto;
}

.hud-btn {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.2rem 0.6rem;
  font-size: 0.85rem;
  font-family: inherit;
  border-radius: 6px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hud-btn:hover {
  background: var(--color-primary);
  color: #000;
  box-shadow: 0 0 10px var(--color-primary);
}

#game-canvas {
  grid-area: game;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  touch-action: none;
}

#controls-panel {
  grid-area: panel;
  background: #111;
  border-left: 1px solid var(--color-grid);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-gutter: stable;
  position: relative;
  min-height: 0;
  padding-bottom: 12px;
  padding-right: 8px;
  min-width: 0;
}

#seo-content {
  grid-area: seo;
  border-top: 1px solid var(--color-grid);
  background: rgba(0, 0, 0, 0.78);
  color: var(--color-text);
  padding: 0.9rem 1.1rem;
  line-height: 1.5;
  overflow-y: auto;
  overscroll-behavior: contain;
  max-height: 180px;
}

#seo-content h2,
#seo-content h3 {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#seo-content h2 {
  font-size: 0.95rem;
}

#seo-content h3 {
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

#seo-content p,
#seo-content li {
  font-size: 0.8rem;
}

#seo-content p + h3 {
  margin-top: 0.65rem;
}

#seo-content ul {
  margin: 0.35rem 0 0.35rem 1rem;
}

#seo-content a {
  color: var(--color-primary);
}

#seo-content a:hover {
  color: var(--color-accent);
}

#controls-panel .lil-gui {
  min-height: 0;
}

.legend-panel {
  grid-area: game;
  align-self: end;
  justify-self: start;
  margin: 0 0 16px;
  background: rgba(5, 5, 16, 0.6);
  border: 1px solid var(--color-grid);
  border-radius: 6px;
  padding: 0.4rem 0.5rem;
  font-size: 0.75rem;
  color: var(--color-text);
  display: grid;
  gap: 0.3rem;
  min-width: 110px;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.5);
}

.legend-panel.hidden {
  display: none;
}

.legend-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.legend-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(224, 224, 224, 0.85);
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-icon {
  width: 18px;
  height: 18px;
  display: inline-block;
  vertical-align: middle;
}

#mobile-controls {
  display: none;
}

#ui-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 20;
}

.screen {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  padding: 2rem;
  border: 2px solid var(--color-primary);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 0 20px var(--color-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
}

.screen.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#loading-screen.active {
  opacity: 1;
  visibility: visible;
}

.screen button {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.5rem 1.5rem;
  font-size: 1.2rem;
  font-family: inherit;
  margin: 1rem 0.5rem;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.screen button:hover {
  background: var(--color-primary);
  color: #000;
  box-shadow: 0 0 15px var(--color-primary);
}

.screen button:active {
  transform: scale(0.95);
}

.screen-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.about-content {
  max-width: 42rem;
  margin: 0 auto;
  text-align: left;
  color: var(--color-text);
}

.about-content p {
  margin: 0.5rem 0 0.75rem;
  line-height: 1.4;
}

.about-row {
  margin: 0.35rem 0;
  overflow-wrap: anywhere;
}

.about-label {
  color: var(--color-primary);
}

.about-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: rgba(76, 201, 240, 0.6);
  text-underline-offset: 0.15em;
}

.about-content a:visited {
  color: var(--color-primary);
}

.about-content a:hover {
  color: var(--color-accent);
  text-decoration-color: rgba(247, 37, 133, 0.75);
}

.about-content a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.restart-prompt {
  margin-top: 0.5rem;
  font-size: 1rem;
  color: var(--color-text);
  text-shadow: 0 0 8px rgba(0, 0, 0, 0.6);
}

.game-over-reason {
  margin-top: 0.35rem;
  font-size: 0.95rem;
  color: var(--color-primary);
  text-shadow: 0 0 8px rgba(0, 0, 0, 0.6);
}

.game-over-detail {
  margin-top: 0.2rem;
  font-size: 0.85rem;
  color: rgba(224, 224, 224, 0.85);
}

.game-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  color: var(--color-accent);
  text-shadow: 0 0 15px var(--color-accent);
  margin-bottom: 1rem;
}

.title-guide {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-grid);
  text-align: left;
  max-width: 420px;
}

.guide-title {
  font-size: 1.1rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.guide-list {
  list-style: none;
  display: grid;
  gap: 0.4rem;
  color: var(--color-text);
  font-size: 0.95rem;
}

.guide-list li::before {
  content: '▸';
  color: var(--color-accent);
  margin-right: 0.5rem;
}

.kbd-group {
  display: inline-flex;
  gap: 0.2rem;
  margin: 0 0.15rem;
}

.guide-list kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.35rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--color-grid);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: rgba(12, 12, 24, 0.9);
  color: var(--color-text);
  font-size: 0.8rem;
  line-height: 1;
  text-transform: uppercase;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.6);
}

.screen button kbd,
.hud-btn kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.1rem;
  padding: 0.05rem 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-bottom-width: 2px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.35);
  color: inherit;
  font-size: 0.7em;
  line-height: 1;
  text-transform: uppercase;
  opacity: 0.8;
  margin-left: 0.3rem;
}

.screen h2 {
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  color: var(--color-accent);
  text-shadow: 0 0 15px var(--color-accent);
  margin-bottom: 1rem;
}

/* --- UI Overhaul Phase 1: Card-based Modern Interface --- */
.lil-gui {
  /* Design Tokens */
  --ui-bg: rgba(5, 5, 12, 0.95);
  --ui-card-bg: rgba(16, 16, 32, 0.85);
  --ui-hover-bg: rgba(255, 255, 255, 0.05);
  --ui-border: 1px solid rgba(76, 201, 240, 0.2);
  --ui-accent: var(--color-primary);
  --ui-text: #eee;
  --ui-label: #bbb;
  --ui-radius: 8px;
  --ui-spacing: 12px;

  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.4;
  color: var(--ui-text);
  --background-color: transparent; /* Override lil-gui default */
  --text-color: var(--ui-text);
  --title-background-color: transparent;
  --widget-color: #2a2a40;
  --hover-color: #3a3a50;
  --focus-color: var(--ui-accent);
  --number-color: var(--ui-accent);
  --string-color: var(--color-accent);
}

/* Root Container */
.lil-gui.root {
  display: flex;
  flex-direction: column;
  gap: var(--ui-spacing);
  background: transparent;
  border: none;
  box-shadow: none;
  width: 100%;
}

/* 1. Card-ify Top-Level Folders */
/* Target direct children folders of root */
.lil-gui.root > .children > .folder {
  background: var(--ui-card-bg);
  border: var(--ui-border);
  border-radius: var(--ui-radius);
  margin-bottom: var(--ui-spacing);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

/* Slight hover effect for cards */
.lil-gui.root > .children > .folder:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5);
  border-color: rgba(76, 201, 240, 0.4);
}

/* 2. Header & Titles */
/* Root header (Control Panel) */
.lil-gui.root > .title {
  text-align: center;
  font-size: 1.1em;
  padding: 12px;
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 4px;
  border-radius: var(--ui-radius);
}

/* Card Headers */
.lil-gui .folder > .title {
  font-size: 1em;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--ui-accent);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  cursor: pointer;
  display: flex;
  align-items: center;
}

.lil-gui .folder > .title:hover {
  background: var(--ui-hover-bg);
}

/* Custom Arrow */
.lil-gui .folder > .title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 2px solid var(--ui-accent);
  border-bottom: 2px solid var(--ui-accent);
  transform: rotate(-45deg); /* Down arrow */
  margin-right: 10px;
  transition: transform 0.2s;
}

.lil-gui .folder.closed > .title::before {
  transform: rotate(-135deg); /* Right arrow */
}

/* Hide default lil-gui arrow */
.lil-gui .folder > .title::after {
  display: none;
}

/* 3. Content Area */
.lil-gui .children {
  border-left: none; /* Remove old indentation line */
  margin-left: 0;
  padding: 8px 0;
}

/* Nested folders (2nd level) - subtle indent */
.lil-gui .folder .folder {
  margin: 4px 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.2);
}
.lil-gui .folder .folder > .title {
  font-size: 0.9em;
  padding: 6px 10px;
  color: #ccc;
}

/* 4. Controls (Rows) */
.lil-gui .controller {
  padding: 4px 8px; /* Compact padding for desktop */
  display: flex;
  align-items: center;
  flex-wrap: nowrap; /* Keep on one line by default */
  gap: 8px;
  justify-content: space-between;
  min-height: 32px; /* Ensure consistent height */
}

.lil-gui .controller:hover {
  background: var(--ui-hover-bg);
}

.lil-gui .name {
  color: var(--ui-label);
  flex: 0 0 45%; /* Fixed width for labels */
  min-width: 0; /* Allow truncate */
  padding-right: 8px;
  white-space: normal; /* Allow text wrapping */
  line-height: 1.2;
  text-align: left;
}

.lil-gui .widget {
  flex: 1 1 auto; /* Take remaining space */
  min-width: 0;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.lil-gui .controller.function .name {
  flex: 1 1 auto;
  text-align: center;
  padding-right: 0;
}

.lil-gui .controller.function .widget {
  flex: 1 1 100%;
}

.lil-gui .controller.path-length-control {
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 4px;
}

.lil-gui .controller.path-length-control .name {
  flex: 1 1 100%;
  padding-right: 0;
}

.lil-gui .controller.path-length-control .widget {
  flex: 1 1 100%;
  justify-content: stretch;
}

.lil-gui .panel-restart-footnote {
  padding: 4px 8px 8px;
  color: var(--ui-label);
  font-size: 0.8em;
  line-height: 1.25;
  opacity: 0.85;
}

/* Inputs & Selects */
.lil-gui input[type='text'],
.lil-gui input[type='number'],
.lil-gui select {
  background: #050510;
  border: 1px solid #444;
  color: var(--ui-text);
  border-radius: 4px;
  padding: 4px;
  height: 24px; /* Compact inputs */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  font-size: 0.9em;
}

.lil-gui input:focus,
.lil-gui select:focus {
  border-color: var(--ui-accent);
  outline: none;
}

/* Toggle Switch (Checkbox) - Strong Reset */
.lil-gui input[type='checkbox'] {
  -webkit-appearance: none !important;
  appearance: none !important;
  width: 36px !important; /* Slightly smaller switch */
  height: 20px !important;
  background: #333 !important;
  border-radius: 10px !important;
  position: relative;
  cursor: pointer;
  border: 1px solid #555 !important;
  transition:
    background 0.2s,
    border-color 0.2s;
  background-image: none !important;
  margin: 0;
  flex-shrink: 0;
  font-size: 0 !important;
  color: transparent !important;
  content: none !important;
  box-sizing: border-box !important;
  overflow: hidden;
}

.lil-gui input[type='checkbox']::before {
  display: none !important;
}

.lil-gui input[type='checkbox']::after {
  content: '' !important;
  position: absolute;
  top: 50% !important;
  left: 2px !important;
  width: 14px; /* Smaller dot */
  height: 14px;
  background: #fff;
  border-radius: 50%;
  transform: translateY(-50%);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  z-index: 10;
  display: block !important;
}

.lil-gui input[type='checkbox']:checked {
  background: var(--ui-accent) !important;
  border-color: var(--ui-accent) !important;
}

.lil-gui input[type='checkbox']:checked::after {
  transform: translate(16px, -50%); /* Adjusted travel distance */
}

/* Sliders */
.lil-gui .slider {
  background: #1a1a2e;
  height: 6px; /* Compact track */
  border-radius: 3px;
  width: 100%;
  margin: 0;
  cursor: ew-resize;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.lil-gui .slider-fg {
  background: var(--ui-accent);
  border-radius: 3px;
  box-shadow: 0 0 5px var(--ui-accent); /* Tighter shadow */
}

/* Buttons */
.lil-gui button {
  background: rgba(76, 201, 240, 0.1);
  border: 1px solid var(--ui-accent);
  color: var(--ui-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px;
  border-radius: 4px;
  transition: all 0.2s;
  cursor: pointer;
  font-weight: bold;
  width: 100%;
  font-size: 0.9em;
  line-height: 1;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lil-gui button:hover {
  background: var(--ui-accent);
  color: #000;
  box-shadow: 0 0 8px var(--ui-accent);
}

/* Mobile Tweaks */
@media (max-width: 900px), (hover: none) and (pointer: coarse) {
  .lil-gui .controller {
    padding: 10px 12px; /* Larger touch targets */
  }
}

.close-panel-btn {
  display: none; /* Hidden on desktop */
}

/* Mobile Settings Close Button */
@media (max-width: 900px), (hover: none) and (pointer: coarse) {
  .close-panel-btn {
    display: block;
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    background: rgba(255, 0, 0, 0.2);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-family: inherit;
    font-size: 1.1rem;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 4px;
  }

  .close-panel-btn:active {
    background: var(--color-accent);
    color: #fff;
  }

  #controls-panel .lil-gui {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    width: 100% !important;
    margin-top: 10px;
  }
}

.toast {
  position: absolute;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  text-align: center;
  max-width: 90%;
}

.toast.active {
  opacity: 1;
}

@media (max-width: 900px), (hover: none) and (pointer: coarse) {
  body {
    justify-content: flex-start;
    align-items: stretch;
    --mobile-controls-height: 200px;
  }

  #game-container {
    grid-template-areas:
      'hud'
      'game';
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    max-width: none;
    max-height: none;
    height: 100vh;
    height: 100svh;
    height: 100dvh;
    padding-top: max(env(safe-area-inset-top), 30px);
    padding-bottom: calc(var(--mobile-controls-height) + env(safe-area-inset-bottom));
  }

  #seo-content {
    display: none;
  }

  #controls-panel {
    display: none;
  }

  .legend-panel {
    display: none;
    position: absolute;
    left: 12px;
    right: auto;
    bottom: calc(var(--mobile-controls-height) + env(safe-area-inset-bottom) + 20px);
    align-self: auto;
    justify-self: auto;
    margin: 0;
    min-width: 120px;
    max-width: 68vw;
    width: auto;
    padding: 0.45rem 0.5rem;
    font-size: 0.75rem;
    pointer-events: none;
  }

  .legend-panel.active {
    display: grid;
  }

  #btn-hud-legend {
    display: none;
  }

  #btn-hud-pause {
    display: none;
  }

  #btn-hud-restart {
    display: none;
  }

  .legend-icon {
    width: 16px;
    height: 16px;
  }

  #controls-panel.active {
    display: block;
    position: fixed; /* Fixed positioning escapes the parent stacking context */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000; /* Ensure it's above everything, including UI layer */
    background: rgba(0, 0, 0, 0.95); /* Slightly darker for better contrast */
    padding: 20px;
    padding-top: max(env(safe-area-inset-top) + 20px, 50px);
    overflow-y: auto; /* Ensure scrolling works if content is long */
  }

  #mobile-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    background: #000;
    border-top: 1px solid var(--color-grid);
    touch-action: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    height: var(--mobile-controls-height);
    padding-bottom: env(safe-area-inset-bottom);
    z-index: 15;
    user-select: none;
    -webkit-user-select: none;
  }

  #mobile-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 10px;
    padding: 0 12px;
    width: min(360px, 100%);
  }

  .mobile-btn {
    width: 100%;
    min-width: 0;
    min-height: 44px;
    padding: 10px 12px;
    background: transparent;
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    color: var(--color-primary);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .mobile-btn:active {
    background: var(--color-primary);
    color: #000;
  }

  .dpad-row {
    display: flex;
    gap: 10px;
    margin: 4px;
  }

  .dpad-btn {
    min-width: 64px;
    min-height: 64px;
    width: 64px;
    height: 64px;
    background: #222;
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    color: var(--color-primary);
    font-size: 1.4rem;
    display: flex;
    justify-content: center;
    align-items: center;
    transition:
      transform 0.1s,
      background-color 0.1s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
  }

  .dpad-btn:active {
    background: var(--color-primary);
    color: #000;
    transform: scale(0.95);
  }
}

@media (max-width: 1100px) {
  #hud {
    font-size: 1rem;
  }
}

@media (min-width: 901px) and (hover: hover) {
  #btn-hud-settings {
    display: none;
  }
}

@media (max-width: 600px) {
  .hud-btn {
    padding: 0.2rem 0.4rem;
    font-size: 0.75rem;
  }

  #hud {
    padding: 0 0.5rem;
    gap: 0.5rem;
    font-size: 1rem;
  }

  #hud .hud-item {
    position: relative;
  }

  #hud .hud-item:not(.hud-action)::after {
    content: '·';
    margin-left: 0.35rem;
    color: rgba(76, 201, 240, 0.65);
  }

  #hud .hud-item.hud-action::after {
    content: '';
    margin: 0;
  }
}