:root {
  --ink: #1c1712;
  --muted: #6b5e52;
  --paper: #f4ead8;
  --card: #fff8ed;
  --rule: #d8c8b0;
  --rust: #9c2f16;
  --rust-dark: #7a230f;
  --moss: #2f4a38;
  --ok: #1f6b3a;
  --bad: #9c2f16;
  --shadow: 0 18px 40px rgba(28, 23, 18, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, #fff7e8 0, transparent 42%),
    linear-gradient(180deg, #efe3cc 0%, var(--paper) 100%);
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  line-height: 1.5;
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.masthead {
  border-bottom: 3px solid var(--ink);
  padding-bottom: 22px;
  margin-bottom: 28px;
}

.kicker {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--rust);
}

h1,
h2,
h3,
.lede {
  font-family: Fraunces, Georgia, serif;
}

h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.05;
  margin: 6px 0 12px;
}

.lede {
  max-width: 38rem;
  font-size: 1.15rem;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow);
  padding: 22px;
}

.panel-head,
.quiz-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

h2 {
  font-size: 1.4rem;
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.field-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

textarea {
  width: 100%;
  resize: vertical;
  min-height: 280px;
  padding: 14px;
  border: 1px solid var(--rule);
  background: #fffdf8;
  color: var(--ink);
  font: inherit;
  line-height: 1.55;
}

textarea:focus,
input:focus,
button:focus-visible {
  outline: 3px solid #e2b089;
  outline-offset: 2px;
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 8px;
}

.controls {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.slider-label {
  display: grid;
  gap: 6px;
  font-size: 0.95rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--rust);
}

.primary,
.ghost {
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 11px 16px;
}

.primary {
  background: var(--rust);
  color: #fff8ed;
}

.primary:hover {
  background: var(--rust-dark);
}

.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
}

.ghost:hover {
  background: #f3e6d0;
}

.error {
  margin-top: 12px;
  color: var(--bad);
  font-weight: 600;
}

.empty {
  color: var(--muted);
  border: 1px dashed var(--rule);
  padding: 28px 18px;
}

.brief {
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

#summary {
  padding-left: 1.2rem;
  display: grid;
  gap: 10px;
}

.question {
  padding: 14px 0;
  border-top: 1px solid var(--rule);
}

.question p {
  font-weight: 700;
  margin-bottom: 10px;
}

.choices {
  display: grid;
  gap: 8px;
}

.choice {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 10px;
  border: 1px solid transparent;
}

.choice.correct {
  background: #e6f4ea;
  border-color: #b7d7bf;
}

.choice.wrong {
  background: #f8e6e2;
  border-color: #e3b6ac;
}

.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.colophon {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }

  textarea {
    min-height: 220px;
  }
}