:root {
  color-scheme: dark;
  --ink: #1c1915;
  --paper: #f6f1e7;
  --muted: #6e675c;
  --line: #e4ddd0;
}

* { box-sizing: border-box; }

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

body {
  min-height: 100dvh;
  background: var(--ink);
  color: var(--paper);
  font-family: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
}

#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 32rem;
  margin: 0 auto;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: calc(14px + env(safe-area-inset-top)) 20px 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

.top span:last-child { color: #b7ad9e; }

.notice {
  margin: 10px 20px 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.4;
  color: #d9d0c3;
}

.sheet {
  flex: 1;
  overflow: auto;
  margin: 14px 16px 0;
  background: var(--paper);
  color: var(--ink);
  border-radius: 18px;
  padding: 22px 20px 28px;
}

.sheet img {
  display: block;
  width: 100%;
  max-height: 28dvh;
  object-fit: contain;
  border-radius: 12px;
  margin: 0 0 16px;
  background: #efe8db;
}

.kicker {
  margin: 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.ident {
  margin: 4px 0 12px;
  font-family: ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--muted);
  user-select: all;
}

.front {
  margin: 0;
  font-size: 1.65rem;
  line-height: 1.35;
}

.blank {
  display: inline-block;
  min-width: 2.2em;
  border-bottom: 2px solid var(--ink);
  transform: translateY(-0.12em);
}

.answer {
  margin: 18px 0 0;
  font-size: 2rem;
  font-variant-numeric: tabular-nums;
}

.say {
  margin: 12px 0 0;
  font-size: 1.15rem;
  line-height: 1.4;
}

.opens {
  margin: 16px 0 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.4;
  color: var(--muted);
}

.rows {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.rows li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 1.05rem;
}

.rows .num {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.source {
  margin-top: 18px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
}

.source a { color: #1d4d32; }

.source summary { cursor: pointer; color: var(--muted); }

.source p { margin: 8px 0 0; color: var(--ink); }

.note {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: end;
  padding: 10px 16px 0;
}

.note label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.note span, .note-status {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #b7ad9e;
}

.note textarea {
  width: 100%;
  resize: none;
  min-height: 52px;
  padding: 10px 12px;
  border: 0;
  border-radius: 12px;
  background: #2a261f;
  color: var(--paper);
  font: 500 16px/1.35 ui-sans-serif, system-ui, sans-serif;
}

.note button {
  min-height: 52px;
  padding: 0 14px;
  border: 0;
  border-radius: 14px;
  background: var(--paper);
  color: var(--ink);
}

.note-status {
  grid-column: 1 / -1;
  margin: 0;
  min-height: 1.2em;
  letter-spacing: 0;
  line-height: 1.4;
}

.dock {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
}

button, .field input {
  font: 600 17px/1 ui-sans-serif, system-ui, sans-serif;
}

.dock button {
  min-height: 52px;
  border: 0;
  border-radius: 14px;
}

.show, .mark { grid-column: 1 / -1; background: var(--paper); color: var(--ink); }
.again { background: #f0d2c8; color: #6d2c1f; }
.hard { background: #f0e2c0; color: #5c4816; }
.good { background: #d5eadb; color: #1d4d32; }

.gate, .empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 28px 22px calc(28px + env(safe-area-inset-bottom));
}

.gate h1, .empty h1 {
  margin: 0 0 8px;
  font-size: 2.4rem;
  font-weight: 500;
}

.gate p, .empty p {
  margin: 0 0 22px;
  color: #d9d0c3;
  font-size: 1.15rem;
  line-height: 1.4;
}

.field { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.field span {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.field input {
  font-weight: 500;
  font-size: 18px;
  padding: 14px 12px;
  border-radius: 12px;
  border: 0;
  background: #2a261f;
  color: var(--paper);
}

.gate button, .empty button {
  margin-top: 14px;
  min-height: 52px;
  border: 0;
  border-radius: 14px;
  background: var(--paper);
  color: var(--ink);
}

.err {
  min-height: 1.2em;
  margin: 10px 0 0;
  color: #f0b2a4;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
}