:root {
  --bg-color: #ffffff;
  --text-main: #000000;
  --text-muted: #666666;
  --border-color: #eeeeee;
  --primary: #000000;
  --secondary: #f5f5f5;
  --accent: #000000;
  --success: #000000;
  --error: #ff3b30;
  --node-bg: #ffffff;
  --node-stroke: #000000;
  --node-selected: #000000;
  --path-active: #000000;
  --bot-path: #999999;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Outfit", sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  -webkit-font-smoothing: antialiased;
}

#game-container {
  width: 100vw;
  height: 100vh;
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  padding: 30px;
  gap: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--text-main);
  padding-bottom: 15px;
}

.level-info {
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
}

.how-to-play {
    max-width: 500px;
}

.how-to-play h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.how-to-play p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.how-to-play span {
    color: var(--text-main);
    font-weight: 700;
}

#game-area {
  position: relative;
  flex: 1;
  border: 2px solid var(--text-main);
  background: var(--bg-color);
  overflow: hidden;
}

#game-svg {
  width: 100%;
  height: 100%;
}

/* SVG Elements */
.edge {
  stroke: #eeeeee;
  stroke-width: 1;
  transition: all 0.3s ease;
}

.edge.active {
  stroke: var(--path-active);
  stroke-width: 2.5;
}

.edge.bot-path {
  stroke: var(--bot-path);
  stroke-dasharray: 4;
  animation: dash 0.8s linear infinite;
}

@keyframes dash {
  to { stroke-dashoffset: -8; }
}

.edge-label-bg {
  fill: var(--bg-color);
}

.edge-label {
  fill: var(--text-muted);
  font-size: 10px;
  font-weight: 500;
  pointer-events: none;
}

.node {
  fill: var(--node-bg);
  stroke: var(--node-stroke);
  stroke-width: 1.5;
  cursor: pointer;
  transition: all 0.2s ease;
}

.node:hover {
  background: #fdfdfd;
}

.node.source {
  stroke-width: 3;
}

.node.target {
  stroke-width: 3;
}

.node.selected {
  fill: var(--text-main);
}

.node-text {
  fill: var(--text-main);
  font-size: 11px;
  font-weight: 700;
  pointer-events: none;
  text-anchor: middle;
  dominant-baseline: central;
}

.node.selected + .node-text {
  fill: var(--bg-color);
}

/* Markers handled in JS styling */
.marker {
    pointer-events: none;
}

/* UI Overlay */
#overlay-ui {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}

#status-message {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

.controls {
  display: flex;
  gap: 10px;
  pointer-events: auto;
}

.primary-btn, .secondary-btn {
  padding: 8px 16px;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid var(--text-main);
}

.primary-btn {
  background: var(--text-main);
  color: var(--bg-color);
}

.primary-btn:hover:not(:disabled) {
  background: transparent;
  color: var(--text-main);
}

.primary-btn:disabled {
  opacity: 0.1;
  cursor: not-allowed;
}

.secondary-btn {
  background: transparent;
  color: var(--text-main);
}

.secondary-btn:hover {
  background: var(--text-main);
  color: var(--bg-color);
}

/* Stats Panel */
#stats-panel {
  display: flex;
  gap: 40px;
  justify-content: center;
  align-items: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-item label {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
}

#user-dist, #path-display {
  font-size: 1rem;
  font-weight: 800;
}

/* Speed Slider Styling */
#speed-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 150px;
  height: 4px;
  background: #eee;
  outline: none;
}

#speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: #000;
  cursor: pointer;
  border: 2px solid #fff;
}

/* Modals */
.modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(255, 255, 255, 0.98);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.hidden { display: none; }

.modal-content {
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.modal h2 {
  font-size: 3rem;
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.modal p {
  font-size: 1rem;
  margin-bottom: 30px;
  color: var(--text-muted);
}

.modal .primary-btn, .modal .secondary-btn {
  width: 100%;
  margin-bottom: 8px;
  padding: 12px;
}

.main-reset-container {
    display: flex;
    justify-content: center;
}

/* Confetti Container */
#confetti-canvas {
    position: fixed;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 1001;
}

/* Mobile */
@media (max-width: 768px) {
  header { flex-direction: column; text-align: center; gap: 15px; }
  #stats-panel { flex-wrap: wrap; gap: 20px; }
  #overlay-ui { flex-direction: column; gap: 15px; }
}