:root {
  --bg: #e8e2d6;
  --paper: #fffdf8;
  --ink: #2d2925;
  --line: #d8c8b8;
  --accent: #ac713e;
  --active: #f4e5d4;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.app {
  width: 100%;
  min-height: 100vh;
  padding: 18px;
}

.blank-wrap {
  width: 100%;
  min-height: calc(100vh - 36px);
  background: rgba(255, 250, 242, 0.92);
  border: 2px solid var(--line);
  border-radius: 30px;
  box-shadow: 0 18px 45px rgba(65, 49, 32, .08);
  padding: 18px;
  overflow: auto;
}

.blank {
  width: min(1220px, 100%);
  min-width: 1040px;
  margin: 0 auto;
  background: white;
  border: 2px solid #222;
  padding: 12px 14px 14px;
  color: #111;
  border-radius: 2px;
}

.blank-head {
  border: 1px dashed #777;
  padding: 5px 10px 7px;
  text-align: center;
}

.exam-title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 18px;
  letter-spacing: .02em;
  text-decoration: underline;
}

.blank-title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 28px;
  font-weight: 900;
  margin-top: 1px;
}

.small-fields {
  margin: 6px 0;
  display: flex;
  justify-content: center;
  gap: 46px;
  font-size: 12px;
}

.small-fields > div {
  display: flex;
  align-items: end;
  gap: 8px;
}

.mini-cells {
  display: flex;
  gap: 3px;
}

.mini-cells i {
  width: 17px;
  height: 21px;
  border: 1px dashed #777;
  display: block;
}

.sample {
  display: inline-block;
  border-top: 3px solid #111;
  border-bottom: 3px solid #111;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
}

.attention {
  margin: 7px 0 5px;
  background: #111;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 8px;
}

.answers-title,
.replace-title {
  text-align: center;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 17px;
  font-weight: 800;
  margin: 7px 0;
  border-top: 2px solid #111;
  border-bottom: 2px solid #111;
  padding: 3px 0;
}

.answers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 30px;
}

.answer-column {
  display: grid;
  gap: 3px;
}

.answer-row {
  display: grid;
  grid-template-columns: 32px 1fr;
  align-items: center;
  min-height: 29px;
  cursor: pointer;
}

.row-number {
  font-size: 18px;
  font-weight: 900;
  text-align: right;
  padding-right: 9px;
}

.cells {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 2px 4px;
  min-height: 29px;
  border-bottom: 1px solid #111;
}

.cell {
  width: 23px;
  height: 25px;
  border: 1px dashed #9a9a9a;
  display: grid;
  place-items: center;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  font-weight: 800;
  line-height: 1;
  text-transform: uppercase;
}

.answer-row.active .cells,
.replace-row.active .replace-cells,
.replace-row.active .replace-task {
  background: var(--active);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.answer-row.filled .row-number { color: var(--accent); }

.replace-rows {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px 28px;
  margin-top: 5px;
}

.replace-row {
  display: grid;
  grid-template-columns: 76px 1fr;
  align-items: center;
  cursor: pointer;
  gap: 8px;
}

.replace-task,
.replace-cells {
  display: flex;
  align-items: center;
  gap: 2px;
  min-height: 29px;
  padding: 2px 4px;
  border-bottom: 1px solid #111;
}

.replace-task .cell { width: 23px; }

@media (max-width: 1120px) {
  .app { padding: 10px; }
  .blank-wrap { padding: 10px; border-radius: 22px; }
}

.check-area {
  margin-top: 16px;
  display: grid;
  gap: 10px;
  justify-items: center;
}

.button-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.check-button,
.reset-button {
  min-width: 260px;
  border: 2px solid var(--accent);
  border-radius: 18px;
  background: var(--accent);
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  padding: 14px 26px;
  cursor: pointer;
}

.check-button:hover,
.reset-button:hover { filter: brightness(.96); }

.reset-button {
  background: #fffaf2;
  color: var(--accent-dark);
}


.check-report {
  width: 100%;
  min-height: 0;
  font-size: 17px;
  line-height: 1.45;
  color: #111;
}

.check-report.ok {
  border: 2px solid #2f7d47;
  background: #eef8f0;
  padding: 12px 16px;
  font-weight: 800;
}

.check-report.bad {
  border: 2px solid #b7554f;
  background: #fff1ef;
  padding: 12px 16px;
}

.check-report ul {
  margin: 8px 0 0 20px;
  padding: 0;
}

.answer-row.valid .cells,
.replace-row.valid .replace-cells,
.replace-row.valid .replace-task {
  background: #eef8f0;
}

.answer-row.invalid .cells,
.replace-row.invalid .replace-cells,
.replace-row.invalid .replace-task {
  background: #fff1ef;
  outline: 2px solid #b7554f;
  outline-offset: 1px;
}