/* Import a modern sans-serif font (Roboto) */
@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap");

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

body {
  font-family: "Roboto", sans-serif;
  /* Use a subtle gradient background */
  background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* A centered “card” container for the maze */
#maze-container {
  width: 90vw;
  height: 90vh;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

#maze-grid {
  width: 100%;
  height: 100%;
  display: grid;
  gap: 2px;
  /* a slightly larger gap between cells */
  background-color: #ccc;
}

.maze-cell {
  position: relative;
  background-color: #fff;
  transition: background-color 0.2s ease, transform 0.2s ease;
  /* Ensure each cell stays square */
  aspect-ratio: 1;
  /* A subtle inner shadow for a modern “inset” look */
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.05);
}

.maze-cell::before {
  content: "";
  position: absolute;
  background-color: #2c3e50;
  transition: opacity 0.3s ease;
}

.maze-cell.wall-top::before {
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.maze-cell.wall-right::before {
  top: 0;
  right: 0;
  bottom: 0;
  width: 3px;
}

.maze-cell.wall-bottom::before {
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.maze-cell.wall-left::before {
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
}

/* When a cell becomes a wall */
.maze-cell.wall {
  background-color: #2c3e50;
}

/* Start and end cells get bold colors */
.maze-cell.start {
  background-color: #4caf50 !important;
}

.maze-cell.end {
  background-color: #f44336 !important;
}

/* Markers for start and end – centered with a bold font */
.maze-cell.start::after,
.maze-cell.end::after {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.4em;
  font-weight: bold;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.maze-cell.start::after {
  content: "S";
}

.maze-cell.end::after {
  content: "E";
}

/* Visited and solution cells */
.maze-cell.visited {
  background-color: rgba(100, 149, 237, 0.3);
  animation: visitedAnimation 0.3s ease-out;
}

.maze-cell.path {
  background-color: #ffd700;
  animation: pathAnimation 0.5s ease-out;
}

@keyframes visitedAnimation {
  0% {
    transform: scale(0.3);
    background-color: rgba(0, 0, 66, 0.75);
  }

  50% {
    background-color: rgba(17, 104, 217, 0.75);
  }

  100% {
    transform: scale(1);
    background-color: rgba(100, 149, 237, 0.3);
  }
}

@keyframes pathAnimation {
  0% {
    transform: scale(0.6);
  }

  100% {
    transform: scale(1);
  }
}