.mode-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.mode-btn {
  border: 1px solid var(--paper-line);
  background: #fff;
  color: var(--ink-soft);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 14px;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.converter-field {
  max-width: 320px;
}

.converter-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}

.converter-field input,
.converter-field select {
  width: 100%;
  border: 1px solid var(--paper-line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-size: 16px;
  font-family: var(--font);
  padding: 12px;
}

.hidden {
  display: none;
}

.result {
  margin-top: 20px;
  border: 1px solid var(--paper-line);
  border-radius: 12px;
  padding: 16px 18px;
  background: #FBFAF6;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.result-label {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 4px;
}

.result-value {
  margin: 0;
  font-size: 34px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.result-letter-badge {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 3px solid var(--paper-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--ink-soft);
  flex-shrink: 0;
}

.result-letter-badge.grade-a {
  border-color: var(--green);
  color: var(--green);
}

.result-letter-badge.grade-bc {
  border-color: var(--yellow);
  color: var(--yellow);
}

.result-letter-badge.grade-df {
  border-color: var(--red);
  color: var(--red);
}

.result-note {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.scale-table-wrap {
  margin-top: 28px;
  overflow-x: auto;
}

.scale-table-wrap h3 {
  margin: 0 0 12px;
  font-size: 16px;
}



@media (max-width: 780px) {
  .result {
    flex-direction: column;
    align-items: flex-start;
  }
}