@charset "UTF-8";

.unit-converter-card {
  max-width: 980px;
  margin: 0 auto 36px;
  padding: 32px;
  border-radius: 28px;
  border: 1px solid #e5e7eb;
  background: linear-gradient(180deg, #ffffff 0%, #fbfcff 100%);
  box-shadow:
    0 18px 44px rgba(15, 23, 42, 0.06),
    0 4px 14px rgba(15, 23, 42, 0.04);
}

.converter-top-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.converter-field,
.converter-box {
  display: flex;
  flex-direction: column;
}

.converter-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: #fff;
}

.converter-main-grid {
  display: grid;
  grid-template-columns: 1fr 72px 1fr;
  gap: 16px;
  align-items: end;
  margin-top: 18px;
}

.converter-center-box {
  display: flex;
  align-items: center;
  justify-content: center;
}

.converter-swap-btn {
  width: 56px;
  height: 56px;
  border: 1px solid #d7dce5;
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  color: #0f172a;
  font-size: 24px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.converter-swap-btn:hover {
  transform: translateY(-1px);
  border-color: #c7d0db;
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.1);
}

.converter-btn-row {
  margin-top: 22px;
  gap: 10px;
}

.converter-result-highlight {
  margin-top: 24px;
  padding: 34px 24px;
  border-radius: 26px;
  border: 1px solid #dbe3f0;
  background: linear-gradient(180deg, #f7f9ff 0%, #eef3ff 100%);
  text-align: center;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 14px 34px rgba(59, 91, 219, 0.08);
}

.converter-result-label {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: #64748b;
}

.converter-result-value {
  display: block;
  font-size: 52px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #0f172a;
  word-break: break-word;
}

.converter-result-desc {
  margin: 14px 0 0;
  font-size: 17px;
  line-height: 1.6;
  color: #475569;
}

.converter-info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.converter-info-box {
  padding: 22px 20px;
  border-radius: 22px;
  border: 1px solid #e5e7eb;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  box-shadow:
    0 12px 28px rgba(15, 23, 42, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.converter-info-label {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  color: #475569;
}

.converter-info-value {
  display: block;
  font-size: 32px;
  line-height: 1.1;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.converter-info-text {
  font-size: 18px;
  line-height: 1.5;
  font-weight: 700;
}

@media (max-width: 900px) {
  .converter-top-grid,
  .converter-info-grid {
    grid-template-columns: 1fr;
  }

  .converter-main-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .converter-center-box {
    order: 3;
  }
}

@media (max-width: 768px) {
  .unit-converter-card {
    padding: 22px 16px;
    border-radius: 22px;
  }

  .converter-result-highlight {
    padding: 28px 16px;
    border-radius: 22px;
  }

  .converter-result-value {
    font-size: 38px;
  }

  .converter-result-desc {
    font-size: 15px;
  }

  .converter-info-value {
    font-size: 26px;
  }

  .converter-info-text {
    font-size: 16px;
  }

  .converter-btn-row {
    flex-wrap: wrap;
  }

  .converter-btn-row .utility-btn {
    flex: 1 1 calc(50% - 8px);
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .converter-btn-row .utility-btn {
    flex: 1 1 100%;
  }

  .converter-result-value {
    font-size: 34px;
  }
}