/* Font declarations now live in dashboard.css (Proza Libre, OFL). */
:root {
  --width: 36;
  --gap: 1rem;
  --rounding: 4px;
  --accent: #696;
  --background: #eee;
  --content-background: #fff;
  --content-text: #000;
  --heading-background: #aaa;
  --heading-text: #fff;
  --selected-background: #fffc;
  --help-background: #aaa;
  --help-text: #fff;
  --unit-opacity: 0.4;
  --heading-unit-opacity: 0.6;
  --pie-chart-radius: 145px;
  --graph-axis: #ddd;
  --graph-line: #f4f4f4;
  --graph-highlight: #0001;
  --key-line: #999;
  --table-stripe: #f8f8f8;
}

@media screen and (min-width:840px) {
  :root {
    --gap: 2rem;
  }
}

.high        { color: #c45; }
.medium      { color: #e90; }
.low         { color: #5b5; }
.generation  { color: #aaa; }
.price       { color: #000; }
.emissions   { color: #000; }
.demand      { color: #000; }
.fossils     { color: #c45; }
.renewables  { color: #5b5; }
.others      { color: #27c; }
.transfers   { color: #aaa; }
.coal        { color: #a35; }
.gas         { color: #e94; }
.solar       { color: #ed0; }
.wind        { color: #9d5; }
.hydro       { color: #2cb; }
.nuclear     { color: #09c; }
.biomass     { color: #36b; }
.belgium     { color: #817; }
.denmark     { color: #c66; }
.france      { color: #e94; }
.ireland     { color: #ed0; }
.netherlands { color: #9d5; }
.norway      { color: #2cb; }
.pumped      { color: #09c; }
.battery     { color: #639; }

@media (prefers-color-scheme:dark) {
  :root {
    --background: #111;
    --content-background: #222;
    --content-text: #eee;
    --heading-background: #444;
    --selected-background: #222c;
    --help-background: #444;
    --graph-axis: #444;
    --graph-line: #2a2a2a;
    --graph-highlight: #fff1;
    --key-line: #666;
    --unit-opacity: 0.6;
    --table-stripe: #181818;
  }

  .generation { color: #888; }
  .price      { color: #eee; }
  .emissions  { color: #eee; }
  .demand     { color: #eee; }
  .transfers  { color: #888; }
}

*, ::before, ::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  font-family: 'Proza Libre',sans-serif;
  font-weight: 300;
  font-size: clamp(18px, calc(100vw / var(--width)), 20px);
  font-feature-settings: 'tnum';
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
}

body {
  margin: 0;
  padding: 1.5rem var(--gap) 0;
  background: var(--background);
  color: var(--content-text);
}

header {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  text-align: center;

  h1, p {
    margin: 0 0 1rem;
  }

  h1 {
    font-size: 2rem;
    font-weight: 400;
    line-height: 1.1;
  }

  span {
    white-space: nowrap;
  }

  a:last-child {
    margin-left: 0.5rem;
    padding: 2px 0.5rem;
    border-radius: 0.75rem;
    background: var(--heading-background);
    color: var(--heading-text);
    font-weight: 400;
    text-decoration: none;
  }
}

main, footer {
  display: grid;
  gap: var(--gap);
  max-width: 1280px;
  margin: 0 auto;
}

main {
  padding-top: 0.5rem;
  font-size: 18px;
  line-height: 1.25;

  @media screen and (max-width:459px) {
    font-size: 16px;
  }
}

footer {
  display: grid;
  gap: var(--gap);
  padding-block: var(--gap);
  font-size: 1rem;
  line-height: 1.5;

  @media screen and (min-width:960px) {
    grid-template-columns: 1fr 1fr;
  }
}

section, #live dl {
  padding: 1rem;
  border-radius: var(--rounding);
  background: var(--content-background);
  color: var(--content-text);
}

h2 {
  font-size: 1.1rem;
  font-weight: 400;
  line-height: 1;

  main &, footer & {
    margin: -1rem -1rem 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--rounding) var(--rounding) 0 0;
    background: var(--heading-background);
    color: var(--heading-text);
  }
}

h3 {
  margin: 2rem 0 1rem;
  padding: 0;
  font-size: 1rem;
  font-weight: 300;
  text-align: center;

  &:first-of-type {
    margin-top: 0;
  }
}

p {
  margin: 0;

  + p {
    margin-top: 1rem;
  }

  + div {
    margin-block: 1rem;
  }
}

table {
  border-collapse: collapse;
}

a {
  color: var(--accent);
  text-decoration-color: transparent;
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.15em;
  transition: text-decoration-color 0.2s;

  &:hover {
    text-decoration-color: var(--accent);
  }
}

path {
  fill: transparent;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

#live {
  display: grid;
  gap: var(--gap);
  overflow: hidden;

  @media screen and (min-width:1360px) {
    --pie-chart-radius: 221px;
  }

  > div {
    grid-column: 1 / -1;
  }

  > :first-child {
    display: grid;
    grid-row: 1;
    gap: var(--gap);
  }

  @media screen and (min-width:768px) {
    grid-template-columns: 1fr 1fr;
  }

  @media screen and (min-width:840px) {
    grid-template-columns: 1fr calc(2 * var(--pie-chart-radius) + 4rem) 1fr;

    > :first-child {
      grid-template-columns: 1fr 1fr;
    }
  }
}

[role="tablist"] {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  position: sticky;
  top: 0;
  z-index: 1;
  margin: -1rem -1rem 1rem;

  h2 {
    margin: 0;
    border-radius: 0;
    text-align: center;
    -webkit-user-select: none;
    user-select: none;
    cursor: pointer;

    &:first-child {
      border-top-left-radius: var(--rounding);
    }

    &:last-child {
      border-top-right-radius: var(--rounding);
    }

    &[aria-selected="true"] {
      -webkit-backdrop-filter: saturate(180%) blur(20px);
      backdrop-filter: saturate(180%) blur(20px);
      background: var(--selected-background);
      color: var(--content-text);
      cursor: auto;
    }

    @media screen and (max-width:549px) {
      text-transform: capitalize;

      span {
        display: none;
      }
    }
  }
}

[role="tabpanel"] {
  --table-width: 305px;
  display: grid;
  gap: 1rem 3rem;

  @media screen and (min-width:768px) {
    grid-template-columns: var(--table-width) 1fr;
    grid-template-areas: "pie price" "status emissions" "equation emissions" "table emissions" "table demand" "table generation" "table transfers";
  }

  @media screen and (min-width:1139px) {
    grid-template-columns: 1fr var(--table-width) 1fr;
    grid-template-areas: "pie status demand" "pie equation demand" "pie table demand" "price table generation" "emissions table transfers";
  }

  &:nth-child(n + 3) {
    display: none;
  }

  > div {
    min-width: 0;
  }

  @media screen and (min-width:768px) {
    > :nth-child(1) { grid-area: status; }
    > :nth-child(2) { grid-area: equation; }
    > :nth-child(3) { grid-area: pie; }
    > :nth-child(4) { grid-area: table; }
    > :nth-child(5) { grid-area: price; }
    > :nth-child(6) { grid-area: emissions; }
    > :nth-child(7) { grid-area: demand; }
    > :nth-child(8) { grid-area: generation; }
    > :nth-child(9) { grid-area: transfers; }
  }

  > :is(:nth-child(1),:nth-child(2)) {
    padding-bottom: 1rem;
  }

  @media screen and (max-width:767px) {
    > :is(:nth-child(3),:nth-child(4)) {
      padding-bottom: 1rem;
    }
  }

  > :is(:nth-child(1),:nth-child(2),:nth-child(4)) {
    width: 100%;
    max-width: var(--table-width);
    justify-self: center;
  }

  > :nth-child(3) {
    align-self: center;
  }
}

dl {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  align-items: center;
  margin: 0;
  text-align: center;

  &::before, &::after {
    content: ' ';
    grid-area: 1 / 1 / 3 / 3;
    font-size: 1.25rem;
    line-height: 0.75rem;
  }

  &::after {
    grid-area: 1 / 2 / 3 / 4;
  }

  &[data-operator] {
    &::before { content: '='; }
    &::after  { content: attr(data-operator); }
  }

  dt, dd {
    margin: 0;
    line-height: 1;
    white-space: nowrap;
  }

  dt {
    grid-row: 1;
  }

  dd {
    grid-row: 2;
    font-size: 1.2em;

    &:where(.low, .medium, .high) {
      font-weight: 400;
    }

    abbr {
      color: var(--content-text);
      font-weight: 300;
      opacity: var(--unit-opacity);
    }
  }

  dt:nth-child(1), dd:nth-child(2) { grid-column: 1; }
  dt:nth-child(3), dd:nth-child(4) { grid-column: 2; }
  dt:nth-child(5), dd:nth-child(6) { grid-column: 3; }

  #live & {
    padding-inline: 0;

    @media screen and (min-width:840px) and (max-width:1359px) {
      grid-template-columns: 1fr;
      align-content: center;
      justify-items: start;

      + dl {
        justify-items: end;
      }

      dt, dd, &[data-operator]::before, &[data-operator]::after {
        width: calc(50vw - var(--pie-chart-radius) - 2 * var(--gap));
      }

      dt, dd {
        grid-column: 1;
      }

      dt:nth-child(1) { grid-row: 1; }
      dd:nth-child(2) { grid-row: 2; }
      dt:nth-child(3) { grid-row: 4; }
      dd:nth-child(4) { grid-row: 5; }
      dt:nth-child(5) { grid-row: 7; }
      dd:nth-child(6) { grid-row: 8; }

      &::before { grid-area: 3 / 1; }
      &::after  { grid-area: 6 / 1; }
    }
  }

  [role="tabpanel"] & {
    dd {
      font-size: 18px;
    }
  }
}

.sources {
  display: grid;
  grid-template-columns: max-content 1fr repeat(2, max-content);

  table, thead, tbody, tr {
    display: grid;
    grid-template-columns: subgrid;
    grid-column-end: span 4;
  }

  tr {
    display: grid;
    grid-template-columns: subgrid;
    gap: 0.5rem;

    :nth-child(3), :nth-child(4) {
      text-align: right;
      white-space: nowrap;
    }

    :nth-child(3)::after {
      content: 'GW';
      opacity: var(--unit-opacity);
    }

    :nth-child(4)::after {
      content: '%';
      opacity: var(--unit-opacity);
    }
  }

  th, td {
    padding: 0;
  }

  td + td {
    color: var(--content-text);
  }

  #live & {
    gap: var(--gap);

    @media screen and (min-width:768px) {
      grid-template-columns: max-content 1fr repeat(3, max-content) 1fr repeat(2, max-content);
      grid-row: 2;

      .fossils         { grid-area: 1 / 1 / 2 / 5; }
      .renewables      { grid-area: 2 / 1 / 3 / 5; }
      .others          { grid-area: 3 / 1 / 4 / 5; }
      .interconnectors { grid-area: 3 / 5 / 5 / 9; }
      .storage         { grid-area: 4 / 1 / 5 / 5; }
    }

    @media screen and (min-width:840px) {
      .fossils         { grid-area: 1 / 1 / 2 / 5; }
      .renewables      { grid-area: 2 / 1 / 3 / 5; }
      .others          { grid-area: 3 / 1 / 4 / 5; }
      .interconnectors { grid-area: 1 / 5 / 3 / 9; }
      .storage         { grid-area: 3 / 5 / 4 / 9; }
    }

    @media screen and (min-width:1220px) and (max-width:1359px) {
      grid-template-columns: max-content 1fr repeat(3, max-content) 1fr repeat(3, max-content) 1fr repeat(2, max-content);

      .renewables      { grid-area: 2 / 1 / 4 / 5; }
      .others          { grid-area: 1 / 5 / 3 / 9; }
      .storage         { grid-area: 3 / 5 / 4 / 9; }
      .interconnectors { grid-area: 1 / 9 / 4 / 13; }
    }

    @media screen and (min-width:1360px) {
      grid-template-columns: repeat(3, max-content) 1fr 1fr repeat(3, max-content);
      gap: 0;

      .fossils, .interconnectors {
        border-radius: var(--rounding) var(--rounding) 0 0;
      }

      .others, .storage {
        border-radius: 0 0 var(--rounding) var(--rounding);
      }
    }

    .transfers {
      color: var(--heading-background);
    }

    table {
      align-content: start;
      overflow: hidden;
      background: var(--content-background);

      @media screen and (max-width:1359px) {
        border-radius: var(--rounding);
      }
    }

    thead tr {
      --unit-opacity: var(--heading-unit-opacity);
      background: currentColor;
    }

    tr {
      padding: 0.5rem;
    }

    tr + tr {
      padding-top: 0;
    }

    th, td {
      grid-row: 1;
      line-height: 30px;

      &:nth-child(2) {
        text-align: left;
      }

      @media screen and (min-width:1360px) {
        &:nth-child(2) {
          grid-column: 4;
        }

        .transfers & {
          &:nth-child(2) { grid-column: 1; text-align: right; }
          &:nth-child(3) { grid-column: 3; }
          &:nth-child(4) { grid-column: 2; }

          &:nth-child(2):not(:has([data-help])) {
            padding-right: 1.2em;
          }
        }
      }
    }

    th {
      color: var(--heading-text);
      font-weight: 400;
    }

    td:nth-child(1) {
      background: currentColor;
      padding-top: 2px;

      svg {
        display: block;
        width: 30px;
        height: 28px;
      }

      path {
        stroke: var(--content-background);
      }

      .transfers & {
        display: grid;
        background: transparent;

        &::before {
          content: '';
          grid-area: 1 / 1;
          background: var(--graph-axis);
          height: 2px;
          margin-top: 13px;
        }

        svg {
          grid-area: 1 / 1;
          margin-block: 0;
        }

        path {
          stroke: currentColor;
        }
      }
    }
  }

  [role="tabpanel"] & {
    > * {
      grid-column: 1 / -1;
    }

    tr + tr {
      padding-top: 1em;
    }

    td {
      line-height: 1;

      &:nth-child(1)::after {
        content: '';
        display: block;
        width: 1em;
        height: 1em;
        background: currentColor;
      }

      .transfers &:nth-child(1)::after {
        border: 2px solid;
        background: transparent;
      }
    }
  }
}

[data-help] {
  display: inline-block;
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background: var(--help-background);
  color: var(--help-text);
  font-weight: 400;
  font-variant: small-caps;
  line-height: 1;
  text-align: center;
  cursor: pointer;

  &::after {
    content: '?';
    position: relative;
    top: -1px;
  }
}

.pie-chart {
  display: grid;
  padding: 1px;
  background: var(--content-background);
  border-radius: 50%;
  font-size: 16px;

  > div, svg {
    grid-area: 1 / 1;
  }

  > div {
    display: grid;
    justify-items: center;
    align-content: center;
    text-align: center;

    div:nth-child(1) {
      padding-top: 1.25em;
    }

    div:nth-child(2) {
      display: block;
      width: 35%;
      height: 2px;
      margin: 0.25em 0;
      background: currentColor;
    }
  }

  path {
    fill: currentColor;
    stroke: var(--content-background);
  }

  #live & {
    grid-row: 2;

    @media screen and (max-width:839px) {
      place-self: start center;
      width: calc(2 * var(--pie-chart-radius));
    }

    @media screen and (min-width:768px) {
      grid-column: 2;
    }

    @media screen and (min-width:840px) {
      grid-area: 1 / 2 / 2 / 3;
      margin-block: -2rem;
      border: 2rem solid var(--background);
    }

    @media screen and (min-width:1360px) {
      grid-area: 2 / 2 / 3 / 3;
      font-size: 1rem;
    }
  }

  [role="tabpanel"] & {
    width: calc(2 * var(--pie-chart-radius));
    max-width: 100%;
    margin: auto;
  }
}

.graph {
  --graph-height: 252px;
  --axis-width: 40px;
  --axis-height: 64px;
  --axis-gap: 10px;
  --key-padding: 8px;
  display: grid;
  grid-template: auto var(--axis-height) / var(--axis-width) 1fr;
  gap: calc(var(--axis-gap) - 0.5em) var(--axis-gap);
  position: relative;
  font-size: 12px;
  line-height: 1;

  > div {
    display: grid;
    text-align: right;
  }

  > :nth-child(1) {
    grid-area: 1 / 1 / 2 / 3;
    grid-template-columns: subgrid;
    align-content: space-between;

    > :nth-child(even) {
      margin-top: calc(0.5em - 1px);
      border-top: 2px solid var(--graph-line);

      &.axis {
        border-color: var(--graph-axis);
      }
    }
  }

  > :nth-child(2) {
    grid-area: 2 / 2 / 3 / 3;
    grid-auto-flow: column;
    justify-content: space-around;

    div {
      writing-mode: vertical-lr;
      transform: rotate(180deg);
    }
  }

  svg {
    grid-area: 1 / 2 / 2 / 3;
    width: 100%;
    height: var(--graph-height);
    margin-block: calc(0.5em - 1px);

    rect {
      fill: transparent;

      &:hover {
        fill: var(--graph-highlight);
      }
    }

    g[mask] rect {
      fill: currentColor;
      pointer-events: none;
    }

    path {
      stroke: currentcolor;
      pointer-events: none;
    }

    + div {
      position: absolute;
      top: calc(var(--graph-height) / 2 + 0.5em);
      width: max-content;
      max-width: calc(100vw / 2 - 4 * var(--key-padding));
      padding: var(--key-padding);
      background: var(--content-background);
      color: var(--content-text);
      border: 1px solid var(--key-line);
      border-radius: var(--rounding);
      text-align: left;
      transform: translateY(-50%);
      pointer-events: none;

      div {
        margin-bottom: 0.75em;
        font-size: 16px;
        font-weight: 400;
        text-align: center;
      }

      table {
        grid-template-columns: max-content 1fr max-content;
      }

      tr {
        gap: 7px;

        &:only-child {
          grid-template-columns: 1fr max-content;

          :nth-child(1) {
            display: none;
          }
        }
      }

      td:nth-child(1)::after {
        margin-top: 0;
      }

      td:nth-child(3) {
        white-space: nowrap;
      }

      td:nth-child(3)::after {
        content: none;
      }
    }
  }
}

.wind-milestones {
  margin: 0.75rem auto 0;

  tr:nth-child(even) {
    background: var(--table-stripe);
    border: solid var(--background);
    border-width: 2px 0;
  }

  th, td {
    padding: 0.125rem 0.5rem;
  }

  th {
    font-weight: 400;
    text-align: left;
  }
}

dialog {
  &::backdrop {
    background: rgba(0,0,0,0.5);
  }

  &[open] {
    display: grid;
    grid-template-columns: 1fr 1.5rem;
    grid-template-rows: 1.5rem min-content; /* required to stop Safari stretching the dialog to the viewport height */
    gap: 1rem;
    width: 24rem;
    max-width: calc(100vw - 6rem);
    padding: 1rem;
    border: 0;
    border-radius: var(--rounding);
    background: var(--content-background);
    color: var(--content-text)
  }

  h2 {
    margin: 0;
    font-size: 1.5rem;
  }

  div {
    grid-area: 2 / 1 / 3 / 3;
    max-height: calc(100vh - 8.5rem);
    max-height: calc(100dvh - 8.5rem);
    overflow: auto;
  }

  p + p {
    margin-top: 1rem;
  }

  ul {
    margin-block: 0.5rem 0;
    padding-left: 0;

    li {
      list-style-type: none;
      padding-top: 0.5rem;

      &::before {
        content: '';
        display: inline-block;
        width: 1rem;
        height: 1rem;
        margin-right: 0.5rem;
        vertical-align: center;
        background: currentColor;
      }

      span {
        color: var(--content-text);
      }
    }
  }

  button {
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    cursor: pointer;

    &::-moz-focus-inner {
      padding: 0;
      border: 0;
    }
  }

  svg {
    display: block;
    width: 1.5rem;
    height: 1.5rem;
  }

  path {
    stroke: var(--content-text);
    stroke-width: 4;
    stroke-linecap: butt;
  }
}