:root {
  --ink: #11202b;
  --muted: #5a6a73;
  --surface: #f6f1e8;
  --card: rgba(255, 255, 255, 0.86);
  --line: rgba(17, 32, 43, 0.12);
  --accent: #b95c25;
  --accent-soft: rgba(185, 92, 37, 0.16);
  --shadow: 0 24px 60px rgba(17, 32, 43, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(185, 92, 37, 0.18), transparent 38%),
    linear-gradient(135deg, #efe6da 0%, #f7f2ea 40%, #eef1f0 100%);
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.topbar,
.viewer-header,
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
}

h1,
h2 {
  margin: 0;
  font-weight: 700;
}

.card {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.status.error {
  border-color: rgba(185, 46, 37, 0.3);
  color: #842b1a;
}

.action,
.link {
  border: none;
  border-radius: 999px;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.action.secondary {
  background: rgba(17, 32, 43, 0.08);
  color: var(--ink);
}

.hidden {
  display: none !important;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.meta-grid span {
  display: block;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.sheet-preview {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(17, 32, 43, 0.08);
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  background: #e7ddd0;
}

.highlight-row {
  background: rgba(255, 191, 71, 0.18);
}

.highlight-cell {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  background: rgba(255, 191, 71, 0.24);
}

.hint {
  color: var(--muted);
}

.pdf-frame {
  position: relative;
  overflow: auto;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: #f4f4f2;
}

.pdf-frame img {
  display: block;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

.pdf-highlight {
  position: absolute;
  border: 2px solid rgba(255, 166, 0, 0.95);
  background: rgba(255, 166, 0, 0.15);
  pointer-events: none;
}

pre {
  margin: 0;
  overflow: auto;
  font-size: 0.86rem;
}

@media (max-width: 800px) {
  .topbar,
  .viewer-header,
  .toggle-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .shell {
    padding: 20px 14px 32px;
  }
}