:root {
  color-scheme: light;
  --bg: #f3efe6;
  --bg-accent: #e8f3f2;
  --card: #fffdf7;
  --ink: #1f1b16;
  --muted: #5d5a55;
  --border: #e0d9cf;
  --green: #1f7a4a;
  --green-soft: #e2f3e9;
  --yellow: #b7791f;
  --yellow-soft: #fff4db;
  --red: #b53826;
  --red-soft: #fde7e4;
  --neutral: #3b4a5a;
  --neutral-soft: #e7eef5;
  --shadow: 0 18px 40px rgba(31, 27, 22, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 20% -10%, #fff3d6 0%, transparent 60%),
    radial-gradient(900px 600px at 100% 20%, var(--bg-accent) 0%, transparent 55%),
    var(--bg);
  min-height: 100vh;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.hero {
  text-align: center;
  margin-bottom: 32px;
}

.eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 12px;
}

h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.1rem, 3vw, 2.8rem);
  margin: 0 0 14px;
}

.lede {
  max-width: 680px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.card {
  background: var(--card);
  border-radius: 22px;
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.tile {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 240px;
}

.tile h2 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.05rem;
  margin: 0;
}

.tile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ip-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #f7f4ef;
}

.ip-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ip-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
}

.ip-value {
  font-size: 1rem;
  font-weight: 600;
}

.skeleton {
  color: transparent;
  position: relative;
  overflow: hidden;
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, #ece6dd 0%, #f5efe6 50%, #ece6dd 100%);
  animation: shimmer 1.6s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.status {
  font-size: 0.9rem;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  line-height: 1.4;
}

.status--good {
  background: var(--green-soft);
  color: var(--green);
  border-color: rgba(31, 122, 74, 0.3);
}

.status--warn {
  background: var(--yellow-soft);
  color: var(--yellow);
  border-color: rgba(183, 121, 31, 0.3);
}

.status--bad {
  background: var(--red-soft);
  color: var(--red);
  border-color: rgba(181, 56, 38, 0.3);
}

.status--neutral {
  background: var(--neutral-soft);
  color: var(--neutral);
  border-color: rgba(59, 74, 90, 0.2);
}

.input-label {
  font-weight: 600;
  font-size: 0.9rem;
}

input[type="text"] {
  border-radius: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  font-size: 1rem;
  font-family: inherit;
}

input[type="text"]:focus {
  outline: 2px solid rgba(31, 122, 74, 0.4);
  border-color: rgba(31, 122, 74, 0.5);
}

.helper {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.result {
  background: #f8f6f1;
  border-radius: 14px;
  padding: 16px;
  border: 1px solid var(--border);
  min-height: 170px;
}

.result.good {
  background: var(--green-soft);
  border-color: rgba(31, 122, 74, 0.3);
}

.result.warn {
  background: var(--yellow-soft);
  border-color: rgba(183, 121, 31, 0.3);
}

.result.bad {
  background: var(--red-soft);
  border-color: rgba(181, 56, 38, 0.3);
}

.result-title {
  font-weight: 600;
  margin: 0 0 10px;
}

.result-body {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.learn-more {
  margin-top: 22px;
  border-top: 1px dashed var(--border);
  padding-top: 16px;
}

.learn-more summary {
  cursor: pointer;
  font-weight: 600;
  font-family: "Space Grotesk", sans-serif;
}

.learn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.learn-grid h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.learn-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.footer {
  text-align: center;
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.85rem;
}

button {
  border: none;
  border-radius: 999px;
  padding: 8px 14px;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  cursor: pointer;
  background: #2f6351;
  color: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(47, 99, 81, 0.2);
}

button:disabled {
  background: #cfc8be;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

button.ghost {
  background: transparent;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

button.copy {
  background: #1f7a4a;
}

button.copy.copied {
  background: #2b4f91;
}

button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(46, 103, 80, 0.35);
  outline-offset: 2px;
}

@media (max-width: 720px) {
  .page {
    padding: 32px 16px 48px;
  }

  .card {
    padding: 20px;
  }

  .tile {
    min-height: auto;
  }
}