@import url('normalize.css');
@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap');

* {
  font-family: 'Montserrat', sans-serif;
  scroll-behavior: smooth;
  --set-end: #0d6efd;
  --set-start: green;
  --set-walls: #b36206;
  --danger: #dc3545;
}

body {
  min-height: 100dvh;
}

main {
  width: calc(100% - 16px);
  margin: 0 auto;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.title {
  font-size: 2.5rem;
  font-weight: 800;
  text-wrap: balance;
  margin-bottom: 0;
  color: #2c3e50;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.description {
  font-weight: 500;
  text-wrap: pretty;
  line-height: 1.5;
}

.description ul li:first-child {
  margin-bottom: 1em;
}

.canvas-container {
  width: 100%;
  max-height: 80dvh;
  height: auto;
  overflow: auto;
}

#canvas {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

.inputs-container {
  width: 100%;
  display: grid;
  grid-template:
    'columns'
    'rows'
    'diagonals'
    'auto';
  grid-template-columns: repeat(1, 1fr);
  column-gap: 2em;
  row-gap: 1em;
  justify-items: center;
  align-items: center;
}

.inputs-container input {
  text-align: center;
}
.inputs-container .btn {
  width: 100%;
}

.input {
  width: 100%;
  max-width: 200px;
  padding: 0.5em;
  border: 1px solid #ccc;
  border-radius: 4px;
  display: flex;
  gap: 1em;
  justify-content: space-between;
  align-items: center;
}

.btn {
  --border-radius: 4px;
  --border-width: 1px;
  --border-color: black;
  --color: black;
  --background-color-hover: black;
  --color-hover: white;
  max-width: 200px;
  padding: 0.5em 1em;
  border: none;
  border-radius: var(--border-radius);
  background-color: transparent;
  color: var(--color);
  font-weight: 500;
  cursor: pointer;
  border: var(--border-width) solid var(--border-color);
  transition: all 200ms;
}
.btn:hover,
.btn:active {
  background-color: var(--background-color-hover);
  color: var(--color-hover);
  scale: 1.01;
}
.btn-active {
  background-color: var(--background-color-hover);
  color: var(--color-hover);
}
.btn-danger {
  --border-color: var(--danger);
  --color: var(--danger);
  --background-color-hover: var(--danger);
  --color-hover: white;
}
.btn-set-start {
  --border-color: var(--set-start);
  --color: var(--set-start);
  --background-color-hover: var(--set-start);
  --color-hover: white;
}
.btn-set-end {
  --border-color: var(--set-end);
  --color: var(--set-end);
  --background-color-hover: var(--set-end);
  --color-hover: white;
}
.btn-set-walls {
  --border-color: var(--set-walls);
  --color: var(--set-walls);
  --background-color-hover: var(--set-walls);
  --color-hover: white;
}
.btn-random {
  border: none;
  position: relative;
  appearance: none;
  --border-width: 2px;
  z-index: 2;
  --background-color-hover: transparent;
  --color-hover: black;
}
.btn-random::after {
  --m-i: linear-gradient(#000, #000);
  --m-o: content-box, padding-box;
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  padding: var(--border-width);
  border-radius: var(--border-radius);
  background-image: conic-gradient(
    #488cfb,
    #29dbbc,
    #ddf505,
    #ff9f0e,
    #e440bb,
    #655adc,
    #488cfb
  );
  -webkit-mask-image: var(--m-i), var(--m-i);
  mask-image: var(--m-i), var(--m-i);
  -webkit-mask-origin: var(--m-o);
  mask-origin: var(--m-o);
  mask-clip: var(--m-o);
  -webkit-mask-clip: var(--m-o);
  mask-composite: exclude;
  -webkit-mask-composite: destination-out;
  filter: hue-rotate(0);
  animation: rotate-hue linear 500ms infinite;
  animation-play-state: running;
}
@keyframes rotate-hue {
  to {
    filter: hue-rotate(1turn);
  }
}

.line {
  height: 1px;
  border-top: 1px solid #797979;
  color: solid #797979;
  background-color: solid #797979#e5eaf4;
  width: 90%;
  margin: 0 auto;
}

.actions-container {
  display: grid;
  column-gap: 2em;
  row-gap: 1em;
  justify-items: center;
  grid-template:
    'set-start-btn set-end-btn'
    'set-walls-btn random-btn'
    'start-btn clear-btn';
  grid-template-columns: repeat(2, 1fr);
}

.actions-container .btn {
  width: 100%;
}

footer {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  background-color: #363c42;
  padding: 12px 8px;
  color: #e5eaf4;
  font-weight: 400;
  font-size: 0.9rem;
  text-align: center;
  text-wrap: pretty;
}

footer a {
  color: #e5eaf4;
  text-decoration: none;
  cursor: pointer;
}
footer a:hover {
  text-decoration: underline;
  color: #f8f8f8;
}

@media (min-width: 400px) {
  .inputs-container {
    grid-template: 'columns rows' 'diagonals auto';
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 700px) {
  .actions-container {
    grid-template:
      'set-start-btn set-end-btn set-walls-btn'
      'start-btn random-btn clear-btn';
    grid-template-columns: repeat(3, 1fr);
  }
  .inputs-container {
    max-width: 1000px;
    margin: 0 auto;
    grid-template: 'diagonals columns rows auto';
    grid-template-columns: repeat(4, 1fr);
  }
}