:root {
  --paper: #f6f3ee;
  --surface: #fffdf9;
  --surface-2: #eef5f2;
  --ink: #202123;
  --muted: #69706f;
  --line: #d9d2c7;
  --gold: #b88b38;
  --green: #2f7d68;
  --blue: #2d6f95;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.4;
}

button {
  font: inherit;
  border: 0;
}

.app-shell {
  min-height: 100dvh;
}

.loading,
.empty-state {
  min-height: 220px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 14px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(150px, 1fr);
  align-items: center;
  gap: 18px;
  min-height: 64px;
  padding: 10px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 243, 238, 0.94);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink);
  color: var(--gold);
  font-weight: 800;
}

.brand-title {
  font-weight: 800;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 12px;
}

.tabbar {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.tab-btn {
  min-width: 112px;
  padding: 10px 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
  border-radius: 2px;
}

.tab-btn:hover,
.tab-btn.active {
  background: var(--ink);
  color: #fff;
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.quiet-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 12px;
  cursor: pointer;
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  background: transparent;
  color: var(--muted);
}

.quiet-btn:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.customer-list {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 24px;
}

.list-eyebrow {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.customer-list h1 {
  margin: 4px 0 28px;
  font-size: 30px;
  line-height: 1.1;
}

.customer-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}

.customer-row:hover .customer-name {
  color: var(--blue);
}

.customer-name {
  font-size: 18px;
  font-weight: 800;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 8px;
  background: var(--surface-2);
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.tab-body {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 24px 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.section-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 20px 24px;
}

.section-title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}

.section-content {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.prose h3 {
  margin: 22px 0 8px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
}
.prose h4 {
  margin: 18px 0 6px;
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
}
.prose h5 {
  margin: 14px 0 4px;
  font-size: 13px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.prose p {
  margin: 0 0 10px;
}
.prose ul,
.prose ol {
  margin: 6px 0 12px;
  padding-left: 22px;
}
.prose li {
  margin: 3px 0;
}
.prose strong {
  color: var(--ink);
}
.prose a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-word;
}
.prose a:hover {
  color: var(--gold);
}
.prose blockquote {
  margin: 12px 0;
  padding: 10px 16px;
  border-left: 3px solid var(--gold);
  background: var(--surface-2);
  color: var(--ink);
  font-style: italic;
}
.prose blockquote p {
  margin: 4px 0;
}
.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 18px 0;
}
.prose code {
  background: var(--surface-2);
  padding: 1px 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px;
}

.prose table.prose-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 18px;
  font-size: 13.5px;
}
.prose table.prose-table th,
.prose table.prose-table td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  vertical-align: top;
  text-align: left;
}
.prose table.prose-table th {
  background: var(--surface-2);
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.prose table.prose-table tr:nth-child(even) td {
  background: rgba(0,0,0,0.015);
}

.prose svg {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 14px auto;
}
.prose figure {
  margin: 14px 0;
}
.prose figcaption {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 4px;
}

.thesis-panel {
  margin-top: 8px;
}

.thesis-h2 {
  margin: 4px 0 18px;
  font-size: 24px;
  line-height: 1.15;
  font-weight: 800;
  color: var(--ink);
}

.thesis-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.thesis-content .section-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 22px 26px;
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr;
    align-items: stretch;
    gap: 10px;
  }

  .tabbar {
    overflow-x: auto;
  }

  .tab-btn {
    min-width: max-content;
  }

  .actions {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .topbar {
    padding: 10px 14px;
  }

  .customer-list {
    padding-left: 14px;
    padding-right: 14px;
  }
}