:root {
  --bg-a: #f4efe4;
  --bg-b: #d8e7ef;
  --ink: #162733;
  --muted: #5d6f7f;
  --card: #ffffffe6;
  --line: #c8d7e1;
  --low: #2f7f5f;
  --medium: #9a6d14;
  --high: #9b2b2b;
  --btn: #0f5a76;
  --btn-hover: #0c4357;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 15% 0%, var(--bg-b), var(--bg-a));
}

.layout {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.surface {
  width: min(920px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 22px 55px #1327341f;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
}

.kicker {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--muted);
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
}

.grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.card {
  border-radius: 14px;
  border: 1px solid var(--line);
  padding: 14px;
  background: #fff;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.severity-low {
  border-left: 5px solid var(--low);
}

.severity-medium {
  border-left: 5px solid var(--medium);
}

.severity-high {
  border-left: 5px solid var(--high);
}

.toolbar,
.feed {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: #f7fbff;
}

.toolbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
}

.toolbar-tight {
  margin-top: 24px;
}

.toolbar p {
  margin: 0;
  font-weight: 600;
}

input,
button {
  height: 40px;
  border-radius: 9px;
  border: 1px solid var(--line);
  font: inherit;
}

input {
  padding: 0 12px;
}

button {
  background: var(--btn);
  color: #fff;
  border-color: transparent;
  padding: 0 14px;
  cursor: pointer;
  transition: background 0.18s ease;
}

button:hover {
  background: var(--btn-hover);
}

.feed h2 {
  margin: 0 0 10px;
  font-size: 0.98rem;
  color: var(--muted);
}

.feed ul {
  margin: 0;
  padding-left: 18px;
}

.feed li {
  margin: 8px 0;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.86rem;
}

.back-link {
  display: inline-block;
  margin-top: 16px;
  color: #0f5a76;
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 700px) {
  .surface {
    padding: 20px;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }

  button {
    width: 100%;
  }
}