@charset "UTF-8";

.unit-converter-page {
  max-width: 1220px;
  margin: 0 auto;
  padding: 8px 0 42px;
}

.unit-converter-page .utility-top {
  padding: 34px 20px 30px;
  text-align: center;
}

.unit-converter-page .utility-label {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ecfeff, #eff6ff);
  color: #075985;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.unit-converter-page .utility-title {
  margin: 0;
  color: #0f172a;
  font-size: clamp(34px, 4vw, 46px);
  font-weight: 900;
  letter-spacing: -0.04em;
}

.unit-converter-page .utility-desc {
  max-width: 840px;
  margin: 18px auto 0;
  color: #64748b;
  font-size: 15px;
  line-height: 1.8;
}

.unit-converter-summary-card {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.unit-converter-summary-item {
  padding: 22px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.06);
}

.unit-converter-summary-item::before {
  content: "";
  display: block;
  width: 38px;
  height: 4px;
  margin-bottom: 16px;
  border-radius: 999px;
  background: linear-gradient(90deg, #06b6d4, #2563eb);
}

.unit-converter-summary-item strong {
  display: block;
  margin-bottom: 8px;
  color: #0f172a;
  font-size: 15px;
  font-weight: 900;
}

.unit-converter-summary-item span {
  color: #64748b;
  font-size: 13px;
  line-height: 1.7;
}

.unit-converter-card,
.unit-converter-preset-card,
.unit-converter-result-card,
.unit-converter-table-card,
.unit-converter-history-card {
  margin-bottom: 24px;
  padding: 30px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 28px;
  background: #ffffff;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.08);
}

.unit-converter-card-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 26px;
}

.unit-converter-card-head h2 {
  margin: 0 0 8px;
  color: #0f172a;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.unit-converter-card-head p {
  margin: 0;
  color: #64748b;
  font-size: 14px;
  line-height: 1.7;
}

.unit-converter-status-badge,
.unit-converter-result-badge,
.unit-converter-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ecfeff, #eff6ff);
  color: #075985;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}

.unit-converter-preset-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.unit-converter-preset-btn {
  min-height: 102px;
  padding: 18px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  text-align: left;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.05);
  transition: transform 0.18s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.unit-converter-preset-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 18px 34px rgba(6, 182, 212, 0.12);
}

.unit-converter-preset-btn strong {
  display: block;
  margin-bottom: 8px;
  color: #0f172a;
  font-size: 15px;
  font-weight: 900;
}

.unit-converter-preset-btn span {
  display: block;
  color: #64748b;
  font-size: 13px;
  line-height: 1.6;
}

.unit-converter-top-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.unit-converter-main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 76px minmax(0, 1fr);
  gap: 18px;
  align-items: end;
  margin-top: 18px;
}

.unit-converter-field {
  min-width: 0;
}

.unit-converter-page .utility-field-label {
  display: block;
  margin-bottom: 10px;
  color: #0f172a;
  font-size: 14px;
  font-weight: 900;
}

.unit-converter-page .utility-input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 18px;
  background: #ffffff;
  color: #0f172a;
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.unit-converter-page select.utility-input {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, #64748b 50%),
    linear-gradient(135deg, #64748b 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 22px,
    calc(100% - 12px) 22px;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 40px;
}

.unit-converter-page .utility-input:focus {
  outline: none;
  border-color: #06b6d4;
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.14);
}

.unit-converter-page .utility-input::placeholder {
  color: #94a3b8;
}

.unit-converter-swap-wrap {
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.unit-converter-swap-btn {
  width: 56px;
  height: 56px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  color: #0f172a;
  font-size: 24px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.08);
  transition: transform 0.18s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.unit-converter-swap-btn:hover {
  transform: translateY(-1px);
  border-color: #06b6d4;
  box-shadow: 0 16px 30px rgba(6, 182, 212, 0.16);
}

.unit-converter-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.unit-converter-page .utility-btn {
  min-height: 48px;
  padding: 0 22px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 800;
}

.unit-converter-page .utility-btn-primary {
  border-color: #0f172a;
  background: linear-gradient(135deg, #0f172a, #075985);
  color: #ffffff;
}

.unit-converter-page .utility-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(7, 89, 133, 0.22);
}

.unit-converter-message {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid rgba(6, 182, 212, 0.18);
  border-radius: 20px;
  background: linear-gradient(135deg, #ecfeff, #eff6ff);
  color: #075985;
  line-height: 1.8;
}

.unit-converter-result-highlight {
  padding: 34px 24px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 26px;
  background: linear-gradient(135deg, #f8fafc, #ecfeff);
  text-align: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.unit-converter-result-label {
  margin: 0 0 12px;
  color: #64748b;
  font-size: 14px;
  font-weight: 900;
}

.unit-converter-result-value {
  display: block;
  color: #0f172a;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.05em;
  word-break: break-word;
}

.unit-converter-result-desc {
  margin: 14px 0 0;
  color: #475569;
  font-size: 15px;
  line-height: 1.7;
}

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

.unit-converter-stat-card {
  padding: 22px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 24px;
  background: linear-gradient(135deg, #ffffff, #f8fafc);
}

.unit-converter-stat-card span {
  display: block;
  margin-bottom: 10px;
  color: #64748b;
  font-size: 13px;
  font-weight: 700;
}

.unit-converter-stat-card strong {
  display: block;
  color: #0f172a;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 900;
  word-break: break-word;
}

.unit-converter-table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 24px;
}

.unit-converter-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

.unit-converter-table thead {
  background: #f8fafc;
}

.unit-converter-table th,
.unit-converter-table td {
  padding: 17px 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  text-align: left;
  font-size: 14px;
}

.unit-converter-table th {
  color: #0f172a;
  font-weight: 900;
}

.unit-converter-table td {
  color: #475569;
  line-height: 1.6;
}

.unit-converter-table tbody tr:last-child td {
  border-bottom: 0;
}

.unit-converter-table td:last-child {
  font-weight: 800;
  color: #0f172a;
}

.unit-converter-history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.unit-converter-history-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 18px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.unit-converter-history-item strong {
  display: block;
  margin-bottom: 6px;
  color: #0f172a;
  font-size: 15px;
  font-weight: 900;
  word-break: break-word;
}

.unit-converter-history-item span {
  display: block;
  color: #64748b;
  font-size: 13px;
  line-height: 1.6;
}

.unit-converter-history-type {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: #ecfeff;
  color: #075985;
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.unit-converter-empty {
  padding: 22px;
  border: 1px dashed rgba(148, 163, 184, 0.38);
  border-radius: 22px;
  background: #f8fafc;
  color: #64748b;
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

.unit-converter-page .help-panel {
  margin-top: 30px;
}

.unit-converter-page .help-panel > h2 {
  margin: 0 0 18px;
  color: #0f172a;
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.unit-converter-page .help-box {
  border-radius: 24px;
}

.unit-converter-page .help-toggle-box summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: #0f172a;
  font-size: 1.12rem;
  font-weight: 800;
  list-style: none;
  cursor: pointer;
}

.unit-converter-page .help-toggle-box summary::-webkit-details-marker {
  display: none;
}

.unit-converter-page .help-toggle-box summary::after {
  content: "+";
  flex: 0 0 auto;
  color: #64748b;
  font-size: 1.2rem;
  font-weight: 700;
}

.unit-converter-page .help-toggle-box[open] summary::after {
  content: "−";
}

.unit-converter-page .help-toggle-content {
  margin-top: 14px;
}

.unit-converter-page .help-toggle-content p {
  margin: 0;
  color: #334155;
  line-height: 1.8;
}

@media (max-width: 1080px) {
  .unit-converter-preset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .unit-converter-summary-card,
  .unit-converter-top-grid,
  .unit-converter-stat-grid {
    grid-template-columns: 1fr;
  }

  .unit-converter-main-grid {
    grid-template-columns: 1fr;
  }

  .unit-converter-swap-wrap {
    align-items: center;
  }

  .unit-converter-swap-btn {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .unit-converter-page {
    padding: 0 0 28px;
  }

  .unit-converter-page .utility-top {
    padding: 26px 14px 24px;
  }

  .unit-converter-page .utility-title {
    font-size: 34px;
  }

  .unit-converter-card,
  .unit-converter-preset-card,
  .unit-converter-result-card,
  .unit-converter-table-card,
  .unit-converter-history-card {
    padding: 22px;
    border-radius: 22px;
  }

  .unit-converter-card-head {
    grid-template-columns: 1fr;
  }

  .unit-converter-btn-row {
    flex-direction: column;
  }

  .unit-converter-btn-row .utility-btn {
    width: 100%;
  }

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

  .unit-converter-history-item {
    grid-template-columns: 1fr;
  }

  .unit-converter-history-type {
    justify-content: flex-start;
    width: fit-content;
  }
}

@media (max-width: 540px) {
  .unit-converter-preset-grid {
    grid-template-columns: 1fr;
  }

  .unit-converter-table {
    min-width: 480px;
  }
}