:root {
  color-scheme: light;
  --paper: #f4f7f3;
  --ink: #16202b;
  --muted: #5e6972;
  --line: #c8d4cd;
  --panel: #ffffff;
  --button: #f9fbfa;
  --button-hover: #eef6f1;
  --left: #2f6f9f;
  --right: #c2412d;
  --green: #217a69;
  --gold: #f2c14e;
  --shadow: 0 18px 45px rgba(27, 40, 48, 0.12), 0 2px 10px rgba(33, 122, 105, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(135deg, #f7f9f2 0%, #edf6f1 43%, #fff3e0 100%);
  overflow-x: hidden;
}

button,
input {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--button);
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

button:not(:disabled):hover {
  border-color: rgba(194, 65, 45, 0.42);
  background: var(--button-hover);
  box-shadow: 0 5px 14px rgba(33, 122, 105, 0.13);
  transform: translateY(-1px);
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(47, 111, 159, 0.28);
  outline-offset: 2px;
}

button:disabled {
  cursor: default;
  opacity: 0.58;
  transform: none;
}

.app-shell {
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr) 292px;
  gap: 18px;
  min-height: 100vh;
  padding: 18px;
}

.play-area,
.faction-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.play-area {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-top: 4px solid var(--green);
}

.faction-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 14px;
  align-self: start;
}

.left-panel {
  border-top: 4px solid var(--left);
}

.right-panel {
  border-top: 4px solid var(--right);
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(47, 111, 159, 0.10), rgba(242, 193, 78, 0.15), rgba(194, 65, 45, 0.10));
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1;
}

h1 {
  font-size: 2.12rem;
}

h2 {
  font-size: 1.34rem;
}

.status-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  color: var(--muted);
  white-space: nowrap;
}

.status-strip span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  font-weight: 720;
}

.mode-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfb;
}

.mode-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(112px, 1fr));
  gap: 8px;
}

.mode-button {
  font-weight: 800;
}

.mode-button.is-active {
  border-color: var(--green);
  color: #ffffff;
  background: var(--green);
}

.duration-control {
  display: grid;
  grid-template-columns: auto minmax(154px, 1fr);
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 760;
  text-transform: uppercase;
}

.duration-stepper {
  display: grid;
  grid-template-columns: 42px minmax(70px, 1fr) 42px;
  gap: 8px;
  align-items: center;
}

.duration-stepper button {
  min-width: 42px;
  padding: 0;
  font-size: 1.2rem;
  font-weight: 900;
}

.canvas-wrap {
  position: relative;
  min-height: 0;
  padding: 12px 14px 6px;
}

canvas {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  aspect-ratio: 5 / 3;
  max-height: calc(100vh - 278px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.command-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px 14px;
}

.button-cluster {
  display: grid;
  grid-template-columns: repeat(2, minmax(94px, 1fr));
  gap: 10px;
}

.primary-button {
  border-color: var(--green);
  color: #ffffff;
  background: var(--green);
  font-weight: 750;
}

.primary-button.is-running {
  border-color: var(--right);
  background: var(--right);
}

#eventText {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
  text-align: right;
}

.decision-panel,
.reveal-panel,
.history-panel {
  margin: 0 20px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  padding: 14px;
}

.decision-panel h2 {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
}

.answer-buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.answer-buttons button {
  font-weight: 850;
}

.reveal-panel {
  display: grid;
  grid-template-columns: minmax(190px, 0.7fr) minmax(0, 1.3fr);
  gap: 14px;
  align-items: start;
}

.reveal-panel[hidden],
.decision-panel[hidden],
.history-panel[hidden] {
  display: none;
}

.reveal-panel.is-correct {
  border-color: rgba(33, 122, 105, 0.36);
  background: linear-gradient(90deg, rgba(33, 122, 105, 0.12), #fbfcfb 72%);
}

.reveal-panel.is-incorrect {
  border-color: rgba(194, 65, 45, 0.32);
  background: linear-gradient(90deg, rgba(194, 65, 45, 0.11), #fbfcfb 72%);
}

.result-label {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.result-text {
  margin: 0;
  color: var(--ink);
  font-size: 1.42rem;
  font-weight: 900;
  line-height: 1.1;
}

.result-detail {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1.4;
}

.reveal-grid {
  display: grid;
  gap: 5px;
}

.reveal-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(64px, 0.7fr) minmax(64px, 0.7fr);
  gap: 8px;
  align-items: center;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.reveal-row span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 720;
}

.reveal-row strong {
  text-align: right;
}

.reveal-note {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
}

.reveal-note strong {
  text-align: right;
}

.reveal-head {
  background: #f2f6f4;
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.history-header h2 {
  color: var(--muted);
  font-size: 0.88rem;
  text-transform: uppercase;
}

.history-score {
  display: grid;
  grid-template-columns: repeat(3, minmax(74px, 1fr));
  gap: 8px;
  min-width: min(100%, 330px);
}

.history-score p {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 8px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.history-score span {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 760;
  text-transform: uppercase;
}

.history-score strong {
  font-size: 1.1rem;
}

.history-panel ol {
  display: grid;
  gap: 8px;
  max-height: 250px;
  margin: 12px 0 0;
  padding: 0;
  overflow: auto;
  list-style: none;
}

.history-item {
  display: grid;
  gap: 3px;
  padding: 9px 10px;
  border-left: 4px solid var(--gold);
  border-radius: 7px;
  background: #ffffff;
}

.history-item.is-correct {
  border-left-color: var(--green);
}

.history-item.is-incorrect {
  border-left-color: var(--right);
}

.history-title,
.history-decision,
.history-metrics {
  margin: 0;
}

.history-title {
  color: var(--ink);
  font-weight: 850;
}

.history-decision,
.history-metrics {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 650;
  line-height: 1.35;
}

.faction-header {
  display: grid;
  gap: 3px;
  padding: 4px 2px 0;
}

.control-card,
.side-stats,
.event-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.control-card {
  display: grid;
  gap: 10px;
  padding: 12px;
}

.control-card label {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 760;
  text-transform: uppercase;
}

.stepper-row,
.timing-stepper {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  gap: 8px;
  align-items: center;
}

.stepper-row button,
.timing-stepper button {
  min-width: 42px;
  padding: 0;
  font-size: 1.32rem;
  font-weight: 900;
  line-height: 1;
}

output {
  display: block;
  min-width: 0;
  padding: 9px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
  text-align: center;
  font-weight: 850;
}

.values-hidden .parameter-card output {
  color: var(--muted);
  font-size: 0.88rem;
}

.side-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 10px;
}

.side-stats p {
  display: grid;
  gap: 3px;
  margin: 0;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.side-stats span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 760;
  text-transform: uppercase;
}

.side-stats strong {
  font-size: 1.2rem;
}

.event-panel {
  margin: 0 20px 14px;
  padding: 12px;
}

.event-panel h2 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.88rem;
  text-transform: uppercase;
}

.event-panel ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.event-panel li {
  min-height: 34px;
  padding: 8px 9px;
  border-left: 3px solid var(--gold);
  border-radius: 6px;
  color: var(--muted);
  background: #ffffff;
  font-size: 0.88rem;
  font-weight: 650;
}

.reading-nav {
  margin: 0 20px 20px;
}

.reading-nav a,
.back-link a {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--panel);
  text-align: center;
  font-weight: 750;
  text-decoration: none;
}

.reading-nav a:hover,
.back-link a:hover {
  border-color: rgba(33, 122, 105, 0.46);
  background: #f7fbf8;
}

.reading-shell {
  min-height: 100vh;
  padding: 28px 18px;
}

.reading-page {
  max-width: 840px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-top: 4px solid var(--green);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 30px;
}

.reading-page h1 {
  font-size: 2.1rem;
}

.reading-page h2 {
  margin: 26px 0 8px;
  font-size: 1.25rem;
}

.reading-page p,
.resource-list {
  color: #344253;
  font-size: 1rem;
  line-height: 1.65;
}

.lede {
  font-size: 1.1rem;
}

.resource-list {
  padding-left: 1.25rem;
}

.back-link {
  margin-top: 28px;
}

@media (max-width: 1120px) {
  .app-shell {
    grid-template-columns: 1fr 1fr;
  }

  .play-area {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .left-panel,
  .right-panel {
    grid-row: 2;
  }

  canvas {
    max-height: none;
  }
}

@media (max-width: 700px) {
  .app-shell,
  .reading-shell {
    padding: 10px;
  }

  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  .play-area,
  .left-panel,
  .right-panel {
    grid-column: 1;
    grid-row: auto;
    width: 100%;
    max-width: 100%;
  }

  .top-bar,
  .mode-panel,
  .command-row {
    align-items: stretch;
    flex-direction: column;
  }

  h1 {
    font-size: 1.72rem;
  }

  .status-strip {
    justify-content: flex-start;
    white-space: normal;
  }

  #eventText {
    text-align: left;
  }

  .duration-control,
  .reveal-panel {
    grid-template-columns: 1fr;
  }

  .answer-buttons {
    grid-template-columns: 1fr;
  }

  .canvas-wrap,
  .control-card,
  .side-stats,
  .event-panel,
  .history-panel,
  .reading-nav {
    max-width: 100%;
    overflow: hidden;
  }

  .history-header {
    align-items: stretch;
    flex-direction: column;
  }

  .history-score {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    min-width: 0;
  }

  .event-panel ol {
    grid-template-columns: 1fr;
  }

  .reading-page {
    padding: 20px;
  }
}