@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,650&family=IBM+Plex+Mono:wght@400;500&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600&display=swap");

:root {
  --paper: #f3eee4;
  --ink: #1c1914;
  --muted: #6b6458;
  --line: #d9d0c2;
  --rust: #c45c26;
  --good: #2c5d3f;
  --bad: #8e2f2f;
  --card: #fffdf8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(1200px 500px at 10% -10%, #fff8ea, transparent),
    var(--paper);
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
  line-height: 1.5;
}

.wrap {
  width: min(720px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 80px;
}

header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 28px;
}

.mark {
  font-family: "Fraunces", serif;
  font-weight: 650;
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: inherit;
}

.mark span {
  color: var(--rust);
}

nav {
  display: flex;
  gap: 18px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a.active,
nav a:hover {
  color: var(--ink);
}

.stats {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 22px;
}

.stats:empty {
  display: none;
  margin: 0;
}

.stats b {
  color: var(--ink);
  font-weight: 500;
}

@keyframes choice-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  55% {
    transform: translateX(5px);
  }
  80% {
    transform: translateX(-3px);
  }
}

button.choice.shake {
  animation: choice-shake 0.32s ease;
}

.nudge {
  margin: 14px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  color: var(--muted);
}

h1 {
  font-family: "Fraunces", serif;
  font-weight: 650;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.lede {
  color: var(--muted);
  margin: 0 0 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 10px 30px rgba(28, 25, 20, 0.04);
}

.prompt {
  font-size: 1.12rem;
  margin: 0 0 18px;
}

.card .prompt:first-child {
  margin-top: 0;
}

.choices {
  display: grid;
  gap: 10px;
}

button.choice {
  text-align: left;
  font: inherit;
  font-size: 1rem;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  color: inherit;
}

button.choice:hover:not(:disabled) {
  border-color: var(--ink);
}

button.choice.picked {
  outline: 2px solid var(--ink);
}

button.choice.correct {
  border-color: var(--good);
  background: #e8f3eb;
}

button.choice.wrong {
  border-color: var(--bad);
  background: #f8e8e6;
}

button.choice:disabled {
  cursor: default;
}

.reveal {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.reveal .verdict {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.reveal .verdict.good {
  color: var(--good);
}

.reveal .verdict.bad {
  color: var(--bad);
}

.muted {
  color: var(--muted);
}

.list {
  display: grid;
  gap: 14px;
}

.item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
}

.item header.row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border: 0;
  margin: 0 0 8px;
  padding: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--muted);
}

details.why {
  margin-top: 10px;
}

details.why summary {
  cursor: pointer;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
}

.filter {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.filter button {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
}

.filter button.on {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.empty {
  color: var(--muted);
}