:root {
  --bg-1: #edf7ff;
  --bg-2: #cfe8ff;
  --ink: #162330;
  --muted: #4f6a82;
  --panel: #f8fcff;
  --line: #bfd9ee;
  --accent: #176da3;
  --accent-ink: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 20%, rgba(23, 109, 163, 0.18), transparent 38%),
    radial-gradient(circle at 85% 80%, rgba(115, 172, 220, 0.2), transparent 34%),
    linear-gradient(145deg, var(--bg-1), var(--bg-2));
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.card {
  width: min(700px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 2rem;
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.14);
}

.kicker {
  margin: 0;
  color: var(--muted);
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  font-weight: 700;
}

h1 {
  margin: 0.45rem 0 1rem;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
}

p {
  margin: 0.75rem 0;
  line-height: 1.55;
  color: #2c2f36;
}

.actions {
  margin-top: 1.3rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  padding: 0.72rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: transform 140ms ease, filter 140ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.07);
}

.hint {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.service-tree {
  margin-top: 1rem;
  display: grid;
  gap: 0.95rem;
}

.tree-node {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.52);
}

.tree-node h3 {
  margin: 0 0 0.7rem;
  font-size: 1rem;
}

.tree-list {
  display: grid;
  gap: 0.55rem;
}

.tree-item {
  display: grid;
  grid-template-columns: minmax(170px, 230px) 1fr auto;
  gap: 0.65rem;
  align-items: center;
  border: 1px solid #d7cebf;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.72);
  padding: 0.62rem 0.75rem;
}

.app-name {
  font-weight: 600;
  color: #2a2d33;
}

.badge {
  display: inline-block;
  margin-left: 0.36rem;
  padding: 0.16rem 0.46rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  vertical-align: middle;
  white-space: nowrap;
}

.badge-dns {
  background: #e8f4ff;
  border-color: #afd0ee;
  color: #125a8c;
}

.badge-fallback {
  background: #eef2f7;
  border-color: #c6d0db;
  color: #3d4b5a;
}

.badge-home {
  background: #e8f8f3;
  border-color: #b8e4d6;
  color: #1d6a54;
}

.badge-infra {
  background: #e9efff;
  border-color: #bfd0f6;
  color: #304f9c;
}

.app-url {
  color: #18455f;
  overflow-wrap: anywhere;
  text-decoration-thickness: 1px;
}

.btn.app-open {
  padding: 0.5rem 0.82rem;
  font-size: 0.92rem;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .card {
    padding: 1.4rem;
    border-radius: 14px;
  }

  .tree-item {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .badge {
    margin-top: 0.35rem;
    margin-left: 0;
    margin-right: 0.25rem;
  }

  .btn.app-open {
    justify-self: start;
  }
}

@media (min-width: 1024px) {
  .card {
    width: min(980px, 100%);
  }
}