:root {
  --bg: #f7f6f3;
  --surface: #ffffff;
  --text: #1c1b19;
  --muted: #6b6860;
  --line: #e4e1d8;
  --accent: #1f4b3a;
  --accent-hover: #16382b;
  --danger: #9b2c2c;
  --ok: #1f6b3a;
  --warn: #8a5a00;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(28, 27, 25, 0.06);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 10% -10%, #ebe8df 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.45;
  min-height: 100vh;
}

.page {
  width: min(560px, 100% - 2rem);
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.hero {
  margin-bottom: 1.5rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 5vw, 2.15rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.hint {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.actions {
  display: grid;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  user-select: none;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: transparent;
}

.btn-block {
  width: 100%;
}

.preview-wrap {
  margin-top: 1.25rem;
  display: grid;
  gap: 0.75rem;
}

.preview-wrap img,
.viz-wrap img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fafaf8;
  object-fit: contain;
  max-height: 280px;
}

.hidden {
  display: none !important;
}

.error {
  margin: 0.75rem 0 0;
  color: var(--danger);
  font-size: 0.95rem;
}

.spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto 0.75rem;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

#loading-panel {
  text-align: center;
  color: var(--muted);
}

.report-head {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.grade {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  background: #6b7280;
}

.grade[data-grade="A"] { background: #1f6b3a; }
.grade[data-grade="B"] { background: #3b7a2f; }
.grade[data-grade="C"] { background: #8a5a00; }
.grade[data-grade="D"] { background: #9a4a1a; }
.grade[data-grade="F"] { background: #9b2c2c; }

.summary {
  margin: 0 0 0.35rem;
  font-weight: 600;
}

.cis {
  margin: 0;
  font-size: 0.95rem;
}

.cis[data-status="ok"] { color: var(--ok); }
.cis[data-status="fail"] { color: var(--danger); }
.cis[data-status="unknown"] { color: var(--muted); }

.meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1rem;
  margin: 0 0 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.meta div {
  display: grid;
  gap: 0.15rem;
}

.meta dt {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.meta dd {
  margin: 0;
  font-size: 0.95rem;
  word-break: break-word;
}

.section-title {
  margin: 1rem 0 0.5rem;
  font-size: 1rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.55rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  background: #f3f1eb;
  font-weight: 600;
}

tr:last-child td {
  border-bottom: none;
}

.issues {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--warn);
}

.disclaimer {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.report-actions {
  margin-top: 1.25rem;
}

.viz-wrap {
  margin: 0.75rem 0 0.25rem;
}