* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: #f6f7f9;
  color: #1c1e21;
  line-height: 1.6;
}

.help-page main {
  max-width: 780px;
  margin: 0 auto;
}

.share-page main {
  display: flex;
  justify-content: center;
  padding: 2rem;
}

.page-header,
.page-footer {
  background-color: #13294b;
  color: #ffffff;
  padding: 1.5rem 2rem;
}

.page-header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}

.page-header p,
.page-footer p {
  margin: 0;
}

.version-text {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

main {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 2rem;
}

.help-content {
  padding: 2rem;
}

.share-content {
  width: 100%;
  max-width: 420px;
  padding: 2rem;
}

.qr-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.qr-visual {
  margin: 0 auto 1.5rem;
  width: 220px;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-caption {
  margin: 0;
  font-weight: 600;
  color: #0d274d;
}

.qr-url {
  margin: 0.5rem 0 1rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.95rem;
  word-break: break-all;
  color: #1c1e21;
}

.qr-note {
  margin: 0;
  font-size: 0.9rem;
  color: #4a5568;
}

.back-link {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

.back-button {
  display: inline-block;
  padding: 0.6rem 1.6rem;
  border-radius: 999px;
  background-color: #1d4ed8;
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.back-link .back-button {
  margin-top: 0;
}

.qr-card .back-button {
  margin-top: 1.5rem;
}

.back-button:hover {
  background-color: #1e40af;
}

.back-button:active {
  transform: translateY(1px);
}

.controls,
.map-panel {
  flex: 1 1 320px;
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.controls h2,
.map-panel h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
  color: #0d1b2a;
}

.file-input {
  display: inline-block;
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  border: 2px dashed #4a6fa5;
  border-radius: 8px;
  background-color: #f0f4fb;
  color: #12355b;
  cursor: pointer;
}

.file-input.selected {
  border-style: solid;
  border-color: #1d4ed8;
  background-color: #e6efff;
}

.help-link {
  display: inline-block;
  margin-left: 0.5rem;
  font-weight: 600;
  color: #1d4ed8;
  text-decoration: none;
}

.help-link:hover {
  text-decoration: underline;
}

.file-input input {
  display: none;
}

button {
  appearance: none;
  border: none;
  background-color: #1d4ed8;
  color: #ffffff;
  border-radius: 6px;
  padding: 0.6rem 1.4rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

button:hover {
  background-color: #1e40af;
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  background-color: #9aa5c0;
  color: #e5e7ef;
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.status-message {
  min-height: 1.5rem;
  margin: 0.5rem 0 1rem;
  color: #555;
}

.results {
  margin: 0;
  padding: 0;
  list-style: none;
}

.results li {
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid #e0e6ef;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  font-size: 0.95rem;
}

.results li:last-child {
  border-bottom: none;
}

.result-label {
  font-weight: 600;
  color: #0d274d;
  word-break: break-all;
}

.result-message {
  width: 100%;
  display: block;
  word-break: break-all;
}

.result-success {
  color: #0f8a5f;
}

.result-error {
  color: #c62828;
}

#map {
  width: 100%;
  height: 420px;
  border-radius: 10px;
  overflow: hidden;
}

@media (max-width: 720px) {
  main {
    padding: 1rem;
  }

  .help-content {
    padding: 1.5rem 1rem;
  }

  .share-page main {
    padding: 1.5rem 1rem;
  }

  .share-content {
    padding: 1.5rem 1rem;
  }

  .page-header,
  .page-footer {
    padding: 1.25rem;
  }
}