:root {
  --app-bg: #f4f7fb;
  --app-surface: rgba(255, 255, 255, 0.92);
  --app-border: rgba(21, 32, 52, 0.1);
  --app-text: #172033;
  --app-muted: #64748b;
  --app-primary: #2563eb;
  --app-primary-dark: #1d4ed8;
  --app-shadow: 0 20px 60px rgba(15, 23, 42, 0.11);
}

[data-bs-theme="dark"] {
  --app-bg: #10151f;
  --app-surface: rgba(24, 31, 44, 0.92);
  --app-border: rgba(148, 163, 184, 0.18);
  --app-text: #eef4ff;
  --app-muted: #9aa8bb;
  --app-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--app-text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.16), transparent 32rem),
    radial-gradient(circle at top right, rgba(20, 184, 166, 0.12), transparent 28rem),
    var(--app-bg);
}

a {
  color: var(--app-primary);
}

.app-navbar {
  border-bottom: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-surface) 92%, transparent);
  backdrop-filter: blur(16px);
}

.navbar-brand {
  color: var(--app-text);
  font-weight: 800;
  letter-spacing: 0;
}

.navbar-brand:hover {
  color: var(--app-primary);
}

.brand-mark {
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border-radius: 0.6rem;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #14b8a6);
  font-size: 0.78rem;
  font-weight: 800;
}

.btn-theme {
  min-width: 4.25rem;
  min-height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--app-border);
  color: var(--app-text);
  background: var(--app-surface);
  font-weight: 700;
}

.app-shell {
  min-height: calc(100vh - 137px);
}

.hero-band {
  padding: 4.5rem 0 2rem;
}

.hero-band .lead {
  max-width: 43rem;
  color: var(--app-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  margin-bottom: 0.65rem;
  color: var(--app-primary);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-panel,
.section-card {
  border: 1px solid var(--app-border);
  border-radius: 0.75rem;
  background: var(--app-surface);
  box-shadow: var(--app-shadow);
}

.hero-panel {
  padding: 2rem;
  text-align: center;
}

.section-card {
  padding: 1.5rem;
}

.ip-display {
  min-height: 4.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--app-primary);
  font-size: clamp(1.7rem, 5vw, 3rem);
  font-weight: 800;
  overflow-wrap: anywhere;
}

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

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

.form-control {
  border-color: var(--app-border);
}

.form-control:focus {
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.15);
}

.loader {
  width: 2.5rem;
  height: 2.5rem;
  border: 0.25rem solid rgba(37, 99, 235, 0.18);
  border-top-color: var(--app-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.info-tile,
.stat-card {
  height: 100%;
  border: 1px solid var(--app-border);
  border-radius: 0.6rem;
  background: rgba(255, 255, 255, 0.58);
}

[data-bs-theme="dark"] .info-tile,
[data-bs-theme="dark"] .stat-card {
  background: rgba(255, 255, 255, 0.04);
}

.info-tile {
  padding: 1rem;
}

.info-label {
  margin-bottom: 0.35rem;
  color: var(--app-muted);
  font-size: 0.82rem;
}

.info-value {
  color: var(--app-text);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.map-box {
  width: 100%;
  min-height: 26rem;
  border: 1px solid var(--app-border);
  border-radius: 0.75rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(20, 184, 166, 0.1));
}

.stat-card {
  padding: 1.1rem;
  border-left-width: 0.35rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
}

.accent-blue {
  border-left-color: #2563eb;
}

.accent-green {
  border-left-color: #16a34a;
}

.accent-violet {
  border-left-color: #7c3aed;
}

.accent-amber {
  border-left-color: #f59e0b;
}

.top-list {
  display: grid;
  gap: 0.65rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.top-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--app-border);
  border-radius: 0.55rem;
  background: rgba(255, 255, 255, 0.48);
}

[data-bs-theme="dark"] .top-list li {
  background: rgba(255, 255, 255, 0.04);
}

.app-footer {
  padding: 1.2rem 0;
  border-top: 1px solid var(--app-border);
  color: var(--app-muted);
  background: color-mix(in srgb, var(--app-surface) 80%, transparent);
}

@media (max-width: 575.98px) {
  .hero-band {
    padding-top: 2.5rem;
  }

  .hero-panel,
  .section-card {
    padding: 1rem;
  }

  .map-box {
    min-height: 19rem;
  }
}