:root {
  --ink: #1c1917;
  --paper: #f4efe6;
  --panel: #fffdf8;
  --line: #d9ccb8;
  --muted: #57534e;
  --accent: #9a3412;
  --accent-hover: #7c2d12;
  --score: #1e3a5f;
  --danger: #9f1239;
  --shadow: 0 1px 2px rgb(28 25 23 / 6%), 0 8px 24px rgb(28 25 23 / 6%);
}

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

html {
  font-size: 18px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgb(154 52 18 / 8%), transparent 28rem),
    var(--paper);
}

.site-header,
.board-header {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 0.5rem;
}

.site-header h1,
.board-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.02em;
}

.lede,
.back-link {
  color: var(--muted);
}

.lede {
  margin: 0.4rem 0 0;
  max-width: 36rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.back-link:hover,
.back-link:focus-visible {
  text-decoration: underline;
}

.layout {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 840px) {
  .layout {
    grid-template-columns: minmax(18rem, 22rem) 1fr;
    align-items: start;
  }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.15rem 1.2rem 1.3rem;
  box-shadow: var(--shadow);
}

.panel h2 {
  margin: 0 0 0.9rem;
  font-size: 1.15rem;
}

label {
  display: block;
  margin-bottom: 0.85rem;
  font-size: 0.92rem;
  color: var(--muted);
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: #fff;
  color: var(--ink);
}

textarea {
  min-height: 10rem;
  resize: vertical;
  line-height: 1.45;
}

button {
  cursor: pointer;
}

.primary-btn,
.grade-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.55rem 1rem;
  border: 0;
  border-radius: 0.7rem;
  background: var(--accent);
  color: #fff7ed;
  font-weight: 700;
}

.primary-btn:hover,
.grade-btn:hover,
.primary-btn:focus-visible,
.grade-btn:focus-visible {
  background: var(--accent-hover);
}

.primary-btn:disabled,
.grade-btn:disabled {
  opacity: 0.55;
  cursor: wait;
}

.status {
  min-height: 1.4em;
  margin: 0.35rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.status.error {
  color: var(--danger);
}

.class-list {
  display: grid;
  gap: 0.65rem;
}

.class-link {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  text-decoration: none;
  color: inherit;
  background: #fff;
}

.class-link:hover,
.class-link:focus-visible {
  border-color: var(--accent);
}

.class-link-name {
  font-weight: 700;
}

.class-link-count {
  color: var(--muted);
  font-size: 0.9rem;
}

.empty-state {
  margin: 0;
  color: var(--muted);
}

.board-main {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.5rem 1.25rem 3rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11.5rem, 1fr));
  gap: 0.85rem;
}

.pupil-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem 0.9rem 0.9rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  box-shadow: var(--shadow);
}

.pupil-card h2 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.25;
}

.score {
  font-size: 2.4rem;
  line-height: 1;
  font-weight: 700;
  color: var(--score);
  font-variant-numeric: tabular-nums;
}

.grade-btn {
  width: 100%;
  margin-top: 0.4rem;
  font-size: 1.05rem;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  margin-top: 0.4rem;
}

.card-actions .grade-btn {
  margin-top: 0;
}

.grade-btn.minus {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.grade-btn.minus:hover,
.grade-btn.minus:focus-visible {
  background: rgb(154 52 18 / 10%);
}