/*  || RESET  */
*,
*::before,
*::after {
    box-sizing: border-box;
    border: none;
    vertical-align: baseline;
}

body {
  margin: 0;
  padding: 1rem;
}

article, 
aside, 
footer, 
header, 
menu, 
nav, 
section {
	display: block;
}

ul,
h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
  padding: 0;
}


/*  || SIZES  */
html {
  font-size: 12px;

  @media (min-width: 768px) {font-size: 16px;}
  @media (min-width: 1024px) {font-size: 18px;}
}

/*  || COLOURS  */
:root {
  --dark-blue: #003049;
  --light-blue: #669BBC; 
  --dark-red: #780000;
  --light-red: #C1121F;
  --light-beige: #FDF0D5;
  --dark-beige: #F9D280;
  --dark-grey: #404040;
  --light-grey: #A3A3A3;
}

html {
  background-color: var(--dark-blue);
  color: var(--light-beige);
}


/*  || TYPOGRAPHY */
@font-face {
  font-family: "Impact";
  src:
    local("Impact"),
    url(2f7e2866715e8f8e0af9.ttf) format("ttf");
}

@font-face {
  font-family: "Monaco";
  src:
    local("Monaco"),
    url(b6396220597d8ef47d3f.ttf) format("ttf");
}

:root {
  --sans-serif: "Impact", Arial, sans-serif;
  --mono: "Monaco", monospace;
}

body {
  font-size: 1rem; 
  line-height: 2rem;
  font-family: var(--sans-serif);
}


/*  || UTILITIES */
body {
  display: flex;
  flex-flow: column;
  min-height: 100vh;
  margin: auto;

  @media (min-width: 1024px) {
    width: 100%;
  }
}

main {
  flex: auto;
  display: flex;
  flex-flow: column;
  justify-content: center;
  padding: 1rem 0;
}

.game-area {
  display: flex;
  flex-flow: column;
  gap: 2rem;
  width: 22rem;
  margin: auto;
  text-align: center;

  @media (min-width: 768px) {  
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: 1fr 4rem;
    gap: 2rem;
    justify-items: center;
    width: auto;

    & .player-area:nth-of-type(2) .player-ships {
      justify-content: flex-end;
    }
  }

  & .player-area {
    display: flex;
    flex-flow: column;
    gap: 1rem;
    align-items: center;
  }
}
header {
  margin: auto;
  text-align: center;
  width: fit-content;
  
  & h1 {
    font-size: 4rem;
    line-height: 12rem;
    text-shadow: 0.5rem 0.5rem var(--dark-red);
    opacity: 0;
    animation: 4s fade-in forwards; 
    animation-delay: 1s;

    @media (min-width: 768px) {
      font-size: 8rem;
    }

    
  }

  & button {
    font-family: var(--sans-serif);
    font-size: 2rem;
    line-height: 4rem;
    color: var(--light-beige);
    background-color: var(--light-red);
    width: 100%;
    transition: background-color .2s ease-out;
    animation: 1s fade-in forwards;
    animation-delay: 2s;
    opacity: 0;

    &:hover {
      background-color: var(--dark-red);
      cursor: pointer;
    }
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}
.player-form.one-player {
  width: 18rem;
  margin: auto;

  & label,
  & .player-form__difficulty {
    margin-top: 2rem;
    font-family: var(--mono);
  }

  & input {
    padding: 0 .5rem;
    width: 100%;
    font-family: var(--mono);
    font-size: 2rem;
    line-height: 4rem;
    color: var(--light-blue);
    border: 1px solid var(--light-blue);
  }

  & input[type="submit"] {
    margin-top: 4rem;
    font-family: var(--sans-serif);
    color: var(--light-beige);
    background-color: var(--light-red);
    border: none;
    transition: background-color 0.2s ease-out;

    &:hover {
      background-color: var(--dark-red);
      cursor: pointer;
    }
  }

  & .player-form__difficulty-spinner {
    display: flex;
    flex-flow: row;

    & #player-form__difficulty-value {
      flex: 1;
      font-family: var(--sans-serif);
      font-size: 2rem;
      line-height: 4rem;
      text-align: center;
    }

    & button {
      width: 4rem;
      height: 4rem;
      font-family: var(--sans-serif);
      font-size: 2rem;
      line-height: 4rem;
      color: var(--light-red);
      background-color: transparent;
      cursor: pointer;
      transition: color 0.2s ease-out;

      &:hover {
        color: var(--dark-red);
      }
    }
  }
}
.player-board {
  grid-row: 1;
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(11, 1fr); 
  grid-template-columns: repeat(11, 1fr);
  width: fit-content;

  & > .header {
    font-family: var(--mono);
    font-size: 1rem;
    border: none;
  }

  & > * {
    width: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    aspect-ratio: 1;
    border: 1px solid var(--light-blue); 
    transition: background-color .1s ease-out;

    &.ship {
      background-color: var(--light-blue);
    }

    &.hit, 
    &.sunk{
      background-color: var(--light-blue);
      background-image: url(016266a33356a3922208.svg);
      background-position: center;
      background-repeat: no-repeat;
      background-size: 1rem;

      &.target {
        background-color: var(--dark-blue);
      }
    }

    &.miss{
      background-image: url(929aea7218609082f46d.svg);
      background-position: center;
      background-repeat: no-repeat;
      background-size: 1rem;
      background-color: var(--dark-blue);
    }

    &.sunk.target {
      background-color: var(--light-blue);
      border: 1px solid var(--light-blue);
    }

    &.target {
      cursor: pointer;

      &.ship {
        background-color: var(--dark-blue);
      }

      &:hover:not(.miss) {
        background-color: var(--light-blue);
      }
    }
  }

  & > .active {
    background-color: chartreuse;
  }
}
.player-ships {
  grid-row: 3;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  max-width: 28rem;
  justify-content: center;

  & .ship {
    display: flex;
    height: 1.5rem;
    border: 3px solid var(--light-blue);

    @media (min-width: 768px) {
      border: 4px solid var(--light-blue); 
    }

    &.sunk {
      border-color: var(--dark-red);
    }

    & .ship-cell {
      width: 1.5rem;
      height: 1rem;
      background: url(ba0846ee2d05312d1b62.svg) no-repeat center;
      background-size: .5rem;

      &.hit {
        background: url(016266a33356a3922208.svg) no-repeat center;
        background-size: .5rem;
      }
    }
  }

  @media (min-width: 768px) {
    justify-content: flex-start;
  }
}
.game-winner {
  grid-column: 1 / -1;
  position: relative;
  bottom: 8rem;

  & button {
    margin-top: 1rem;
    font-family: var(--sans-serif);
    font-size: 2rem;
    line-height: 4rem;
    color: var(--light-beige);
    background-color: var(--light-red);
    width: 100%;
    transition: background-color 0.2s ease-out;

    &:hover {
      background-color: var(--dark-red);
      cursor: pointer;
    }
  }
}
.nav__modal {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  display: flex;
  flex-flow: column;
  justify-content: center;
  height: 100%;
  padding: 1rem 2rem;
  background-color: var(--dark-blue);
  font-family: var(--mono);
  transform: translateY(0);
  transition: 
    visibility .4s ease-out, 
    transform .4s ease-out;

  &.hidden {
    visibility: hidden;
    transform: translateY(-100%);
    transition: 
      visibility .6s ease-in, 
      transform .6s ease-in;
  }

  & .nav__modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
  }
}
nav {
  display: flex;
  flex-flow: row;
  justify-content: space-between;

  & h1 {
    font-size: 2rem;
    text-shadow: 4px 4px var(--dark-red); 
  }

  & button {
    font-size: 2rem;
    font-family: var(--mono);
    color: var(--light-beige);
    text-decoration: underline;
    background: none;
    cursor: pointer;

    &:hover {
      color: var(--dark-beige);
    }
  }
}

.homepage > nav > h1 {
  visibility: hidden; 
}

footer {
  text-align: center;
  font-family: var(--mono);

  & a {
    color: var(--light-beige);

    &:hover {
      color: var(--dark-beige);
    }
  }
}