:root {
  color-scheme: dark;

  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;

  font-size: 14px;

  --input-width: 136px;
  --suffix-width: 88px;
  --control-gap: 8px;

  --field-width: calc(
    var(--input-width) + var(--suffix-width) + var(--control-gap)
  );

  --column-gap: 24px;
  --button-gap: 6px;

  --stats-width: 160px;
  --stats-gap: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-width: 0;
}

body {
  overflow-x: hidden;

  background: #111;
  color: #eee;
}

button,
input,
select {
  font: inherit;
}

button,
input[type="number"],
select {
  height: 32px;
}

button {
  border: 1px solid #444;
  border-radius: 4px;

  background: #272727;
  color: #eee;

  cursor: pointer;
}

button:hover:not(:disabled) {
  background: #333;
}

button:disabled {
  opacity: 0.42;
  cursor: default;
}

input,
select {
  min-width: 0;

  border: 1px solid #444;
  border-radius: 4px;

  background: #1b1b1b;
  color: #eee;
}

input[type="number"] {
  padding: 2px 8px;
}

select {
  padding: 2px 28px 2px 8px;
}

.page-width {
  width: min(1020px, calc(100% - 28px));

  margin-inline: auto;
}

/* Header */

.topbar {
  border-bottom: 1px solid #303030;
}

.topbar-inner {
  min-height: 56px;

  display: grid;
  grid-template-columns: repeat(3, var(--field-width));

  gap: var(--column-gap);

  align-items: center;

  padding-block: 9px;
}

.brand-name {
  grid-column: 1 / 3;

  font-size: 16px;
}

.global-reference {
  grid-column: 3;

  display: flex;
  align-items: center;

  gap: 6px;

  width: max-content;

  color: #aaa;

  font-size: 12px;
}

.global-reference label {
  color: #ccc;

  white-space: nowrap;
}

.global-reference input {
  width: var(--input-width);
  height: 28px;
}

.global-reference button {
  height: 28px;

  padding: 0 8px;
}

/* Tabs */

.tabs {
  border-bottom: 1px solid #303030;
}

.tabs-inner {
  height: 38px;

  display: flex;
  align-items: end;

  gap: 22px;
}

.tab {
  height: 38px;

  padding: 0 2px;

  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;

  background: transparent;
  color: #999;
}

.tab:hover:not(:disabled) {
  background: transparent;
  color: #eee;
}

.tab.active {
  border-bottom-color: #ddd;

  color: #fff;
}

/* Main */

main {
  padding-block: 18px 28px;
}

.tab-panel[hidden] {
  display: none;
}

.experiment {
  min-width: 0;
}

h1 {
  margin: 0;

  font-size: 16px;
  font-weight: 650;
}

.blurb {
  max-width: 620px;

  margin: 5px 0 0;

  color: #999;

  line-height: 1.4;
}

/* Fields */

.form-grid {
  margin-top: 18px;

  display: grid;
  grid-template-columns: repeat(3, var(--field-width));

  gap: 16px var(--column-gap);

  justify-content: start;
}

.field {
  width: var(--field-width);
  min-width: 0;
}

.field > label {
  display: flex;
  align-items: center;

  width: max-content;

  margin-bottom: 5px;

  color: #bbb;

  font-size: 12px;
  line-height: 1.2;
}

.control-row {
  width: var(--field-width);

  display: grid;
  grid-template-columns:
    var(--input-width)
    var(--suffix-width);

  align-items: center;

  gap: var(--control-gap);
}

.field input[type="number"],
.field select {
  width: var(--input-width);
}

.suffix {
  width: var(--suffix-width);

  white-space: nowrap;

  color: #ddd;
}

.hz-readout {
  font-variant-numeric: tabular-nums;
}

/* Tooltips */

.info-tip {
  position: relative;

  display: inline-grid;
  place-items: center;

  margin-left: 4px;

  color: #888;

  font-size: 12px;
  line-height: 1;

  cursor: help;

  outline: none;
}

.info-tip:hover,
.info-tip:focus-visible {
  color: #ddd;
}

.info-tip::after {
  content: attr(data-tooltip);

  position: absolute;
  z-index: 50;

  top: calc(100% + 7px);
  left: 50%;

  width: max-content;
  max-width: min(280px, calc(100vw - 24px));

  padding: 7px 9px;

  border: 1px solid #555;
  border-radius: 5px;

  background: #202020;
  color: #eee;

  font-size: 12px;
  font-weight: 400;
  line-height: 1.35;

  white-space: normal;

  opacity: 0;
  visibility: hidden;

  pointer-events: none;

  transform: translateX(-50%);
}

.info-tip:hover::after,
.info-tip:focus-visible::after {
  opacity: 1;
  visibility: visible;
}

/* Common action buttons */

.test-actions {
  margin-top: 17px;
}

.action-button-grid,
.placement-actions,
.candidate-actions {
  width: var(--input-width);

  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));

  gap: var(--button-gap);

  align-items: center;
}

.action-button-grid .icon-button,
.placement-actions .icon-button,
.candidate-actions .icon-button {
  width: 100%;
  min-width: 0;
}

.action-spacer {
  display: block;
}

.icon-button {
  width: 32px;
  min-width: 32px;
  height: 32px;

  padding: 0;

  display: inline-grid;
  place-items: center;

  font-size: 15px;
  line-height: 1;
}

/* Stats */

.stats-stack {
  width: var(--stats-width);
  min-width: 0;

  display: flex;
  flex-direction: column;

  gap: 0;

  color: #bbb;

  font-size: 13px;
  line-height: 16px;

  white-space: nowrap;

  font-variant-numeric: tabular-nums;
}

.stats-stack strong {
  color: #ddd;
  font-weight: 600;
}

.stats-stack .link-button {
  width: max-content;

  margin: 0;
}

.link-button {
  height: 16px;

  padding: 0;

  border: 0;

  background: transparent;
  color: #999;

  font-size: 12px;
  line-height: 16px;

  text-decoration: underline;
}

.link-button:hover:not(:disabled) {
  background: transparent;
  color: #fff;
}

/* Pitch placement controls */

.placement-controls {
  margin-top: 17px;

  display: grid;
  grid-template-columns:
    var(--input-width)
    var(--stats-width);
  grid-template-rows:
    32px
    32px;

  column-gap: var(--stats-gap);
  row-gap: 8px;

  width: max-content;

  align-items: start;
}

.placement-actions {
  grid-column: 1;
  grid-row: 1;
}

.placement-controls > .judgment {
  grid-column: 1;
  grid-row: 2;

  margin: 0;
}

.placement-stats {
  grid-column: 2;
  grid-row: 1 / 3;

  align-self: start;
}

/* Flat and Sharp */

.judgment {
  width: var(--input-width);

  margin-top: 10px;

  display: flex;

  border: 1px solid #444;
  border-radius: 5px;

  overflow: hidden;
}

.judgment button {
  flex: 1;

  min-width: 0;

  margin: 0;
  padding: 0;

  border: 0;
  border-radius: 0;

  background: #222;
}

.judgment button + button {
  border-left: 1px solid #444;
}

.judgment button:hover:not(:disabled) {
  background: #333;
}

.judgment button:disabled {
  background: #1a1a1a;
}

.judgment button.answer-correct {
  background: #245d32;
  color: #8dec9f;
}

.judgment button.answer-wrong {
  background: #642929;
  color: #ff9090;
}

.judgment button.answer-target {
  background: #263f64;
  color: #8ab8ff;
}

.judgment button.answer-correct:disabled,
.judgment button.answer-wrong:disabled,
.judgment button.answer-target:disabled {
  opacity: 1;
}

/* Placement result */

.placement-result {
  min-height: 22px;

  margin-top: 10px;

  font-variant-numeric: tabular-nums;
}

.placement-result.correct {
  color: #68d47d;
}

.placement-result.incorrect {
  color: #ee7474;
}

/* Pick target controls and candidates */

.pick-controls {
  width: min(760px, 100%);

  margin-top: 17px;

  display: grid;
  grid-template-columns:
    var(--input-width)
    var(--stats-width)
    minmax(0, 1fr);
  grid-template-rows:
    32px
    auto;

  column-gap: var(--stats-gap);
  row-gap: 5px;

  align-items: start;
}

.pick-controls > .action-button-grid {
  grid-column: 1;
  grid-row: 1;
}

.pick-stats {
  grid-column: 2;
  grid-row: 1 / 3;

  align-self: start;
}

.candidate-list {
  grid-column: 1 / 4;
  grid-row: 2;

  min-width: 0;

  margin: 0;

  display: grid;

  gap: 5px;
}

.candidate-row {
  min-width: 0;
  height: 32px;

  display: grid;
  grid-template-columns:
    var(--input-width)
    var(--stats-width)
    minmax(0, 1fr);

  column-gap: var(--stats-gap);

  align-items: center;
}

.candidate-actions {
  grid-column: 1;
}

.candidate-play {
  grid-column: 1;

  width: 100%;
  min-width: 0;
  height: 32px;

  padding: 0;

  display: inline-grid;
  place-items: center;
}

.choose-button {
  grid-column: 2 / 4;

  width: 100%;
  min-width: 0;
  height: 32px;

  padding: 0 7px;

  white-space: nowrap;
}

.candidate-details {
  grid-column: 3;

  min-width: 0;

  overflow: hidden;

  text-overflow: ellipsis;
  white-space: nowrap;

  color: #aaa;

  font-variant-numeric: tabular-nums;
}

.candidate-result-icon {
  display: inline-block;

  width: 1.4em;

  margin-right: 3px;

  font-weight: 700;
  text-align: center;
}

.candidate-row.pick-wrong,
.candidate-row.pick-wrong .candidate-details {
  color: #ee7474;
}

.candidate-row.pick-target,
.candidate-row.pick-target .candidate-details {
  color: #6ea8ff;
}

.candidate-row.pick-correct,
.candidate-row.pick-correct .candidate-details {
  color: #68d47d;
}

/* Placement automatic refresh countdown */

#placementRefresh {
  position: relative;

  overflow: hidden;
}

#placementRefresh::before {
  content: "";

  position: absolute;
  z-index: 0;

  inset: 0;

  background: rgba(255, 255, 255, 0.16);

  transform: scaleX(0);
  transform-origin: right center;
}

#placementRefresh > span {
  position: relative;
  z-index: 1;
}

#placementRefresh.counting-down::before {
  animation: refresh-countdown 3s linear forwards;
}

@keyframes refresh-countdown {
  from {
    transform: scaleX(1);
  }

  to {
    transform: scaleX(0);
  }
}

/* Reflow before controls shrink */

@media (max-width: 830px) {
  .topbar-inner {
    grid-template-columns: repeat(2, var(--field-width));
  }

  .brand-name {
    grid-column: 1;
  }

  .global-reference {
    grid-column: 2;
  }

  .form-grid {
    grid-template-columns: repeat(2, var(--field-width));
  }
}

@media (max-width: 570px) {
  .topbar-inner {
    grid-template-columns: 1fr;

    gap: 7px;
  }

  .brand-name,
  .global-reference {
    grid-column: 1;
  }

  .form-grid {
    grid-template-columns: var(--field-width);
  }
}

@media (max-width: 400px) {
  :root {
    --stats-width: 150px;
    --stats-gap: 4px;
  }

  .page-width {
    width: calc(100% - 16px);
  }

  .tabs-inner {
    gap: 12px;
  }
}