:root {
  --mes-blue: #005ea8;
  --mes-blue-dark: #004a84;
  --mes-ink: #172033;
  --mes-muted: #667085;
  --mes-border: #d9e2ec;
  --mes-surface: #f7f9fb;
}

html {
  font-size: 16px;
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--mes-ink);
  background: #ffffff;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--mes-blue);
}

.navbar {
  min-height: 72px;
}

.brand-logo {
  width: 85px;
  height: auto;
  display: block;
}

.navbar-brand span {
  font-weight: 700;
  color: var(--mes-ink);
}

.nav-link {
  font-weight: 600;
}

.page-shell {
  flex: 1 0 auto;
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, var(--mes-surface) 100%);
  border-bottom: 1px solid var(--mes-border);
  padding: 72px 0 48px;
}

.hero h1,
.page-heading h1 {
  max-width: 820px;
  margin: 0;
  font-size: 2.7rem;
  line-height: 1.1;
  font-weight: 750;
  letter-spacing: 0;
}

.hero .lead,
.page-heading p {
  max-width: 760px;
  margin-top: 16px;
  color: var(--mes-muted);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mes-blue);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn-primary {
  background: var(--mes-blue);
  border-color: var(--mes-blue);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--mes-blue-dark);
  border-color: var(--mes-blue-dark);
}

.tool-overview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding-top: 36px;
  padding-bottom: 48px;
}

.tool-overview-wide {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.explanation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding-top: 30px;
}

.info-panel {
  border: 1px solid var(--mes-border);
  border-radius: 8px;
  background: var(--mes-surface);
  padding: 20px;
}

.info-panel h2 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 750;
}

.info-panel p {
  margin: 0;
  color: var(--mes-muted);
  line-height: 1.55;
}

.info-panel p + p {
  margin-top: 10px;
}

.tool-info {
  max-width: 860px;
  margin-bottom: 22px;
}

.tool-tile {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px;
  border: 1px solid var(--mes-border);
  border-radius: 8px;
  color: var(--mes-ink);
  text-decoration: none;
  background: #fff;
}

.tool-tile:hover {
  border-color: var(--mes-blue);
  color: var(--mes-ink);
}

.tool-icon {
  flex: 0 0 54px;
  height: 54px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--mes-surface);
  color: var(--mes-blue);
  font-weight: 800;
}

.tool-tile strong {
  display: block;
  font-size: 1.12rem;
}

.tool-tile small {
  display: block;
  margin-top: 6px;
  color: var(--mes-muted);
  line-height: 1.45;
}

.tool-page {
  padding-top: 46px;
  padding-bottom: 56px;
}

.page-heading {
  margin-bottom: 28px;
}

.tool-form {
  max-width: 860px;
  border: 1px solid var(--mes-border);
  border-radius: 8px;
  padding: 26px;
  background: #fff;
}

.network-tools-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.compact-tool-form {
  max-width: none;
}

.compact-tool-form h2 {
  margin: 0 0 18px;
  font-size: 1.2rem;
  font-weight: 750;
}

.form-section {
  margin-bottom: 20px;
}

.form-label {
  font-weight: 650;
}

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

.compact-grid {
  gap: 12px;
}

.grid-span {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.qr-preview {
  margin-top: 24px;
  padding: 18px;
  width: min(100%, 320px);
  border: 1px solid var(--mes-border);
  border-radius: 8px;
  background: #fff;
}

.qr-preview img {
  width: 100%;
  height: auto;
  display: block;
}

.monospace {
  font-family: Consolas, "Liberation Mono", Menlo, monospace;
}

.result-block {
  margin-top: 22px;
}

.result-inline {
  margin-top: 20px;
  padding: 14px 16px;
  border: 1px solid var(--mes-border);
  border-radius: 8px;
  background: var(--mes-surface);
  font-weight: 650;
}

.network-result {
  margin-top: 24px;
  border-top: 1px solid var(--mes-border);
  padding-top: 22px;
}

.network-result h2 {
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.network-result h3 {
  font-size: 1.05rem;
  margin-bottom: 14px;
  font-weight: 750;
}

.result-list {
  display: grid;
  grid-template-columns: minmax(140px, 220px) minmax(0, 1fr);
  gap: 10px 18px;
}

.result-list dt {
  color: var(--mes-muted);
  font-weight: 650;
}

.result-list dd {
  margin: 0;
}

.map-frame {
  margin-top: 20px;
  border: 1px solid var(--mes-border);
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.text-danger {
  margin-bottom: 18px;
}

.footer {
  flex-shrink: 0;
  padding: 18px 0;
  color: var(--mes-muted);
  background: #fff;
}

.footer-inner {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
}

@media (max-width: 767.98px) {
  .hero {
    padding: 48px 0 34px;
  }

  .hero h1,
  .page-heading h1 {
    font-size: 2rem;
  }

  .tool-overview,
  .tool-overview-wide,
  .explanation-grid,
  .network-tools-grid,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .tool-form {
    padding: 20px;
  }

  .result-list {
    grid-template-columns: 1fr;
  }
}