* {
  box-sizing: border-box;
  font-family: "Lato", sans-serif;
}

:root {
  --game-difficulty: 10;
  --game-board-width: calc(
    clamp(50px, min(5.5vh, 5.18vw), 60px) * var(--game-difficulty)
  );
  --start-board-width: clamp(550px, min(85vh, 80vw), 750px);
  --board-width: var(--start-board-width);
}

html,
body,
#app,
#mobile-unfit {
  height: 100%;
  width: 100%;
  margin: 0;
}

body {
  background-image: url("images/squares-background.png");
  background-repeat: repeat;
  background-position: center;
}

.center {
  position: relative;
  margin: 0 auto;
  min-height: 100%;
  width: var(--board-width);
  padding: 5px 25px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: width 0.75s;
}

/* mobile -> */

#mobile-unfit {
  position: fixed;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #c7cdd7;
  padding: 25px;
}

.mobile-explaination {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.mobile-explaination * {
  width: 100%;
  max-height: 100%;
}

.minesweeper-image-container {
  margin-top: 10px;
  height: 60px;
  padding: 10px;
  background-color: #e4e9ec;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 10px;
}

.mobile-message {
  text-align: center;
  margin-top: 36px;
}

.computer-icons-container {
  height: 90px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 15px 65px;
  margin: 10px 26px 0 26px;
}

@media (min-width: 550px) and (min-height: 550px) {
  #mobile-unfit {
    display: none;
  }
}

@media (max-width: 550px) or (max-height: 550px) {
  #app {
    display: none;
  }
  #help-icon {
    display: none;
  }
  #github-link {
    height: 30px !important;
    width: 30px !important;
    margin: 15px !important;
  }
  #github-link img {
    height: 30px !important;
    width: 30px !important;
  }
}

/* <- mobile */

/* generic styles -> */

h1,
h2 {
  font-family: "Josefin Sans", sans-serif;
}

.btn {
  background-color: #e4e9ec;
  border-radius: 5px;
  border: none;
  font-size: 16px;
  margin: 10px;
  padding: 12.5px 20px;
  min-width: 125px;
  min-height: 25px;
  transition: all 0.15s;
  cursor: pointer;
}

.btn.btn-square {
  min-width: 25px;
}

.btn:hover {
  background-color: #dde3e9;
}

.btn:active {
  background-color: #d7dde3;
}

.btn:disabled {
  cursor: not-allowed;
}

.btn.btn-pri {
  background-color: black;
  color: white;
}

.btn.btn-pri:hover {
  background-color: #2c2c2f;
}

.btn.btn-pri:active {
  background-color: #444447;
}

.btn.btn-sec {
  background-color: white;
  padding: 10.5px 18px;
  border: 2px solid black;
}

.btn.btn-text {
  background-color: transparent;
  margin: 2.5px;
}

.btn.btn-sec:hover,
.btn.btn-text:hover {
  background-color: #eeeff2;
}

.btn.btn-sec:active,
.btn.btn-text:active {
  background-color: #e5e8ec;
}

.btn.btn-warn {
  background-color: #e34562;
  color: white;
}

.btn.btn-warn:hover {
  background-color: #d1537a;
}

.btn.btn-warn:active {
  background-color: #d1537a;
}

kbd {
  color: #333;
  display: inline-block;
  background-color: #eee;
  border: 1px solid #b4b4b4;
  border-radius: 4px;
  padding: 4px 6px;
  font-size: 0.85em;
  font-weight: 700;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
  line-height: 1;
  background-clip: initial;
}

/* <- generic styles */

/* #board -> */

#board {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 10px;
  margin: 55px 0;
  padding: 2px;
  background-color: #e4e9ec;
  overflow: hidden;
  z-index: 10;
  transition: 0.5s padding 0.05s ease, 0.5s margin 0.05s ease;
}

.upper-bar,
.lower-bar {
  position: absolute;
  width: 100%;
  height: 55px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 10px;
  padding: 0 10px;
  opacity: 0;
  visibility: hidden;
  transition: 0.75s opacity 0.25s ease;
}

.upper-bar {
  top: 0;
}

.lower-bar {
  bottom: 0;
}

#board .game-won-text,
#board .game-over-text {
  position: absolute;
  top: calc(50% + 3px);
  left: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
  text-align: center;
  opacity: 0;
  transition: 0.4s opacity;
}

#board .game-won-text {
  color: green;
}

#board .game-over-text {
  color: red;
}

/* <- #board */

/* #board.startboard -> */

#board.startboard {
  display: flex;
  justify-content: center;
  align-items: center;
}

#board.startboard > .game-startscreen {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: fit-content;
  height: fit-content;
  text-align: center;
}

#board.startboard > .game-startscreen.disappear {
  animation-fill-mode: forwards;
  animation-name: disappear;
  animation-delay: 0.1s;
  animation-duration: 0.3s;
}

@keyframes disappear {
  0% {
    display: revert;
    opacity: 100%;
  }

  99.9% {
    display: revert;
    opacity: 0%;
  }

  100% {
    display: none;
    opacity: 0%;
  }
}

.primary-title-buttons {
  width: 100%;
  padding: 17.5px;
}

.minesweeper-logo {
  height: 2.25em;
  margin: 17.5px 0;
}

.title-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100%;
  padding: 5px;
}

.title-container > h3 {
  margin: 15px 0 1px 0;
}

#game-start-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100%;
  padding: 5px;
}

#board.startboard > .square {
  display: none;
}

/* <- #board.startboard */

/* #board.gameboard -> */

#board.gameboard {
  display: grid;
  box-sizing: content-box;
  grid-template-rows: repeat(var(--game-difficulty), 1fr);
  grid-template-columns: repeat(var(--game-difficulty), 1fr);
  gap: 4px;
  padding: 10px;
}

#board.with-upper-info > .upper-bar,
#board.with-lower-info > .lower-bar {
  visibility: visible;
  opacity: 1;
}

#flags-remaining-counter,
#time-elapsed-counter {
  position: relative;
  height: 40px;
  width: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5px;
  background-color: #e9edf0;
  border: 1.5px solid #d7d9dc;
  border-radius: 5px;
  overflow: hidden;
}

.number-rect {
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Josefin Sans", sans-serif;
  background-color: white;
}

.number-rect > .counter-digit {
  position: relative;
}

.number-rect > .counter-digit.exitTopViewWindowBoundary {
  animation: 0.2s exitTopViewWindowBoundary ease forwards;
}

@keyframes exitTopViewWindowBoundary {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(-25px);
    opacity: 0;
  }
}

.number-rect > .counter-digit.enterBottomViewWindowBoundary {
  animation: 0.2s enterBottomViewWindowBoundary ease forwards;
}

@keyframes enterBottomViewWindowBoundary {
  0% {
    transform: translateY(25px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.number-rect > .counter-digit.exitBottomViewWindowBoundary {
  animation: 0.2s exitBottomViewWindowBoundary ease forwards;
}

@keyframes exitBottomViewWindowBoundary {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(25px);
    opacity: 0;
  }
}

.number-rect > .counter-digit.enterTopViewWindowBoundary {
  animation: 0.2s enterTopViewWindowBoundary ease forwards;
}

@keyframes enterTopViewWindowBoundary {
  0% {
    transform: translateY(-25px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.counter-inner-shadow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow: inset 0 7.5px 14px -14px black, inset 0 -7.5px 14px -14px black;
  border-radius: 3px;
}

.upper-bar > #game-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  /* gap: 1px; */
}

.upper-bar .btn-square {
  height: 40px;
  width: 40px;
  padding: 0;
}

.upper-bar .back-icon,
.upper-bar .restart-icon {
  position: relative;
  color: black;
  width: 22px;
  height: 22px;
}

.upper-bar .restart-icon {
  top: 2px;
}

.upper-bar .back-icon {
  top: 1.25px;
}

.instructions-container {
  width: min(100%, 550px);
  height: 100%;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(12.7px, 1.4vh, 15.24px);
  transition: 0.4s opacity;
}

.instructions-container > hr {
  margin: 0;
  height: 1.75em;
  width: 1.5px;
  border: none;
  background-color: #bbb;
  border-radius: 999px;
}

.instructions-container > hr {
  display: none;
}

#square-instruction span.gradient-text {
  color: transparent;
  background-image: linear-gradient(black, brown);
  background-clip: text;
  -webkit-background-clip: text;
}

#flag-instruction span.gradient-text {
  color: transparent;
  background: linear-gradient(black, red);
  background-clip: text;
  -webkit-background-clip: text;
}

#fence-instruction {
  display: none;
}

.instructions-container.with-fences > #fence-instruction {
  display: revert;
}

.instructions-container.with-fences > #fence-instruction span.gradient-text {
  color: transparent;
  background: linear-gradient(black, blue);
  background-clip: text;
  -webkit-background-clip: text;
}

#board.gameboard.with-upper-info {
  padding-top: 55px;
  margin-top: 10px;
}

#board.gameboard.with-lower-info {
  padding-bottom: 55px;
  margin-bottom: 10px;
}

#board:not(.startboard) > .game-startscreen {
  opacity: 0%;
  display: none;
}

#board.gameboard > .square {
  position: relative;
  background-color: white;
  border: none;
  border-radius: 4px;
  width: 100%;
  height: 100%;
  padding: 0;
  opacity: 1;
  transform: scale3d(1, 1, 1);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1),
    inset 0 0 0 0 rgb(0 0 0 / 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: 0.075s background-color ease, 0.075s box-shadow ease;
}

#board.gameboard > .square:not(.pressed) {
  cursor: pointer;
}

#board.gameboard > .square:active {
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05), 0 0 0 0 rgb(0 0 0 / 0.1),
    inset 0 0 0 0 rgb(0 0 0 / 0.1);
  background-color: #fbfbfb;
}

#board.gameboard > .square.pressed {
  box-shadow: 0 0 0 0 rgb(0 0 0 / 0.1), 0 0 0 0 rgb(0 0 0 / 0.1),
    inset 0 0 4px 2px rgb(0 0 0 / 0.1);
  background-color: #f7f7f7;
}

#board.gameboard > .square:not([mine-count="0"]):not(.marked)::after {
  content: attr(mine-count);
  position: relative;
  top: 2.5px;
  font-family: "Josefin Sans", sans-serif;
  font-weight: 675;
  font-size: clamp(24.51px, 2.7vh, 29.41px);
  display: inline;
  opacity: 0;
  transition: 0.2s opacity ease-in-out;
}

#board.gameboard > .square.pressed:not([mine-count="0"])::after,
#board.gameboard > .square.marked::after {
  opacity: 1;
}

#board.gameboard > .square.pressed[mine-count="1"]::after {
  color: blue;
}

#board.gameboard > .square.pressed[mine-count="2"]::after {
  color: green;
}

#board.gameboard > .square.pressed[mine-count="3"]::after {
  color: red;
}

#board.gameboard > .square.pressed[mine-count="4"]::after {
  color: #01007e;
}

#board.gameboard > .square.pressed[mine-count="5"]::after {
  color: #7d0105;
}

#board.gameboard > .square.pressed[mine-count="6"]::after {
  color: #00807f;
}

#board.gameboard > .square.pressed[mine-count="7"]::after {
  color: black;
}

#board.gameboard > .square.pressed[mine-count="8"]::after {
  color: #808080;
}

#board.gameboard > .square.pressed[mine-count="Infinity"]::after,
#board.gameboard > .square.marked::after {
  content: "";
  height: clamp(29.59px, 3.25vh, 35.51px);
  width: clamp(29.59px, 3.25vh, 35.51px);
  top: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

#board.gameboard > .square.marked::after {
  background-image: url("images/flag-no-background.png");
}

#board.gameboard > .square.pressed[mine-count="Infinity"]::after {
  background-image: url("images/mine.png");
}

#board.gameboard > .square.pressed[mine-count="Infinity"]::before {
  content: "";
  position: absolute;
  background-image: url("images/red-dot.svg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  opacity: 0;
  animation: 0.3s disappear 0.5s linear alternate-reverse infinite;
  height: 15%;
  width: 15%;
  z-index: 2;
}

#board.gameboard > .square.animate-in {
  opacity: 0;
  transform: scale3d(0.8, 0.8, 1);
  animation: 1s squareAppearance 0.6s ease forwards;
}

@keyframes squareAppearance {
  0% {
    opacity: 0;
    transform: scale3d(0.8, 0.8, 1);
  }

  85% {
    filter: unset;
  }

  100% {
    opacity: 1;
    transform: scale3d(1, 1, 1);
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  }
}

.game-over-text-container {
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(var(--board-width) * 0.55);
  aspect-ratio: 3;
  transform: translate(-50%, -50%);
  color: black;
  opacity: 0;
  background-color: white;
  border-radius: 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: 0.5s opacity;
  z-index: 1;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.game-over-text-container.visible {
  opacity: 1;
}

.game-over-text {
  position: relative;
  top: 5px;
  margin: 0;
}

/* <- #board.gameboard */

/* #board.won -> */

#board.won > .lower-bar > .instructions-container,
#board.over > .lower-bar > .instructions-container {
  opacity: 0;
}

#board.won > .lower-bar > .game-won-text {
  opacity: 1;
}

#board.over > .lower-bar > .game-over-text {
  opacity: 1;
}

/* <- #board.won */

/* .difficulty-selectors -> */

.difficulty-selectors {
  position: relative;
  width: 150px;
  height: 50px;
  margin: 7.5px;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  overflow: hidden;
  background-color: white;
  border-radius: 10px;
  color: black;
  transition: color 0.15s;
}

.difficulty-selector-square {
  position: absolute;
  content: "";
  width: 48px;
  height: 48px;
  margin: 0;
  border: 2px solid black;
  border-radius: 10px;
  transition: transform 0.2s, border 0.15s;
  cursor: pointer;
  display: none;
}

.difficulty-selectors:hover {
  color: rgb(94, 93, 93);
}

.difficulty-selectors:hover > .difficulty-selector-square {
  border: 2px solid rgb(94, 93, 93);
}

.difficulty-selectors > input[type="radio"] {
  height: 100%;
  width: 100%;
  margin: 0;
  appearance: none;
  background-color: white;
  color: inherit;
  text-align: center;
  cursor: pointer;
}

.difficulty-selectors > input[type="radio"]::after {
  position: relative;
  content: attr(value);
  top: calc(50% - 7.25px);
  text-align: center;
  font-size: 16px;
  font-family: "Josefin Sans", sans-serif;
  font-weight: 700;
}

.difficulty-selectors
  > input[type="radio"][value="10"]:checked
  ~ .difficulty-selector-square {
  transform: translateX(-105%);
  display: block;
}

.difficulty-selectors
  > input[type="radio"][value="16"]:checked
  ~ .difficulty-selector-square {
  transform: translateX(0);
  display: block;
}

.difficulty-selectors
  > input[type="radio"][value="20"]:checked
  ~ .difficulty-selector-square {
  transform: translateX(105%);
  display: block;
}

/* <- .difficulty-selectors */

/* .mode-selectors -> */

.mode-selectors {
  width: 100%;
  margin: 5px;
  padding: 0 20px;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  flex-direction: column;
  gap: 15px;
}

.mode-selector-container {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
}

.mode-selector-container > h4 {
  margin: 0;
}

/* <- .mode-selectors */

/* .toggle -> */

.toggle {
  appearance: none;
  height: 25px;
  width: 40px;
  cursor: pointer;
  border-radius: 20px;
  background-color: #c6cdd7;
  transition: background-color 0.1s;
}

.toggle:hover {
  background-color: #a5b0c0;
}

.toggle::after {
  content: "";
  position: absolute;
  height: 18px;
  width: 18px;
  filter: drop-shadow(0 1px 1px rgb(0 0 0 / 0.05));
  background-color: white;
  border-radius: 20px;
  transform: translate(3.5px, 3.5px);
  transition: all 0.15s;
}

.toggle:active::after {
  height: 16px;
  width: 16px;
  transform: translate(4.5px, 4.5px);
}

.toggle:checked {
  background-color: #32ad84;
}

.toggle:checked::after {
  transform: translate(18px, 3.5px);
}

.toggle:checked:active::after {
  transform: translate(19.5px, 4.5px);
}

.toggle:disabled {
  cursor: not-allowed;
}

.toggle:disabled::after {
  background-color: #d7dee9;
}

.toggle:disabled:hover {
  background-color: #c8cfd9;
}

.toggle:disabled:active::after {
  height: 18px;
  width: 18px;
  transform: translate(3.5px, 3.5px);
}

/* <- .toggle */

/* .modal -> */

.modal {
  position: relative;
  min-width: 350px;
  border: none;
  border-radius: 5px;
  background-color: white;
}

.modal::backdrop {
  height: 100%;
  width: 100%;
  backdrop-filter: brightness(35%);
  opacity: 0%;
}

.modal[open] {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
  animation: 0.4s modalFlyIn cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}

.modal[open]::backdrop {
  animation: 0.2s darken forwards;
}

.modal[closing] {
  animation: 0.4s modalFlyOut cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}

.modal[closing]::backdrop {
  animation: 0.2s brighten forwards;
}

.modal-controls {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  height: 100%;
  width: 100%;
  margin-top: 15px;
}

@keyframes modalFlyIn {
  0% {
    opacity: 0%;
    bottom: 50px;
  }

  100% {
    opacity: 100%;
    bottom: 0;
  }
}

@keyframes modalFlyOut {
  0% {
    opacity: 100%;
    bottom: 0;
  }

  100% {
    opacity: 0%;
    top: 50px;
  }
}

@keyframes darken {
  0% {
    opacity: 0%;
  }

  100% {
    opacity: 100%;
  }
}

@keyframes brighten {
  0% {
    opacity: 100%;
  }

  100% {
    opacity: 0%;
  }
}

/* <- .modal */

#github-link,
#help-icon {
  position: fixed;
  margin: 20px;
  height: 50px;
  width: 50px;
  z-index: 999;
}

#help-icon {
  right: 0;
  bottom: 0;
  cursor: pointer;
}

#github-link {
  top: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

#github-link img {
  height: 50px;
  width: 50px;
}

#help-modal {
  max-width: min(70vw, 800px);
}

#help-modal-content {
  display: flex;
  align-items: center;
  flex-direction: column;
  height: 100%;
  width: 100%;
  padding: 5px 25px;
}

.minesweeper-game-imaage {
  width: 240px;
  height: 240px;
  display: inline-block;
  float: right;
  border-radius: 5px;
  margin: 0 0 0 30px;
}

#help-modal-content > p {
  width: 100%;
  font-size: 14pt;
  line-height: 1.75;
}