html, body, main, header, footer {
  padding: 0px;
  margin: 0px;
}

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  padding: 24px;
}

#calc-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a73e8;
  margin: 0 0 20px 0;
}

.input-area {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
}

.input-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.input-row label {
  font-size: 0.9rem;
  font-weight: 600;
  color: #333;
  white-space: nowrap;
  min-width: 72px;
}

.input-field {
  flex: 1;
  padding: 10px 12px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1.1rem;
  font-family: Consolas, "Courier New", monospace;
  outline: none;
  transition: border-color 0.2s;
}

.input-field:focus {
  border-color: #1a73e8;
}

.input-field.error {
  border-color: #d93025;
}

.unit-text {
  font-size: 1rem;
  font-weight: 600;
  color: #555;
  min-width: 24px;
  text-align: right;
}

.error-text {
  color: #d93025;
  font-size: 0.85rem;
  min-height: 20px;
  margin-bottom: 4px;
}

.action-row {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.primary-btn {
  flex: 1;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  background: #1a73e8;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
  min-height: 44px;
}

.primary-btn:hover {
  background: #1557b0;
}

.secondary-btn {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  background: #fff;
  color: #555;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}

.secondary-btn:hover {
  border-color: #d93025;
  color: #d93025;
}

.result-area {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.result-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.result-item {
  background: #f8faff;
  border: 1px solid #e8edf5;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.result-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #888;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.result-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: #1a73e8;
  font-family: Consolas, "Courier New", monospace;
  word-break: break-all;
}

#schedule-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #333;
  margin: 0 0 12px 0;
}

.empty-hint {
  text-align: center;
  color: #bbb;
  font-size: 0.9rem;
  margin: 16px 0;
}

.table-container {
  overflow-x: auto;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.schedule-table thead th {
  background: #f0f5ff;
  color: #333;
  font-weight: 600;
  padding: 10px 8px;
  border-bottom: 2px solid #e0e0e0;
  white-space: nowrap;
  text-align: center;
}

.schedule-table tbody td {
  padding: 8px;
  border-bottom: 1px solid #f0f0f0;
  text-align: center;
  font-family: Consolas, "Courier New", monospace;
  color: #555;
}

.schedule-table tbody tr:nth-child(even) {
  background: #fafafa;
}

.schedule-table tbody tr:hover {
  background: #f0f5ff;
}

.schedule-table .ellipsis-cell {
  text-align: center;
  color: #999;
  font-weight: 600;
  letter-spacing: 4px;
  padding: 8px;
}

#features, #scenarios, #FAQ {
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 16px 16px;
}

#features h2, #scenarios h2, #FAQ h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #333;
  margin: 0 0 8px 0;
}

#features p, #scenarios li, #FAQ dd {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.7;
}

#scenarios ul {
  padding-left: 20px;
  margin: 0;
}

#scenarios li {
  margin-bottom: 8px;
}

#FAQ dl {
  margin: 0;
}

#FAQ dt {
  font-size: 0.9rem;
  font-weight: 600;
  color: #333;
  margin-top: 12px;
}

#FAQ dd {
  margin: 4px 0 0 0;
}

#__fork {
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 16px;
  text-align: center;
}

@media (max-width: 768px) {
  #app {
    padding: 12px;
    gap: 12px;
  }

  .card {
    padding: 16px;
    border-radius: 8px;
  }

  #calc-title {
    font-size: 1.3rem;
    margin-bottom: 16px;
  }

  .result-summary {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .result-item {
    padding: 10px 8px;
  }

  .result-number {
    font-size: 1.3rem;
  }

  .schedule-table {
    font-size: 0.75rem;
  }

  .schedule-table thead th,
  .schedule-table tbody td {
    padding: 6px 4px;
  }
}