:root {
  --ink: #17232d;
  --ink-soft: #52616b;
  --ink-faint: #7c8a91;
  --paper: #f7f4ee;
  --paper-deep: #ece7dc;
  --card: #fffdf9;
  --line: #d9d4ca;
  --line-dark: #b9b4aa;
  --accent: #e15b3d;
  --accent-deep: #ad3f2b;
  --accent-pale: #f8ddd4;
  --teal: #126f6b;
  --teal-pale: #dcefeb;
  --gold: #a67116;
  --gold-pale: #f5e8c6;
  --shadow: 0 18px 50px rgba(32, 43, 46, 0.08);
  --radius: 5px;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 88% 2%, rgba(225, 91, 61, 0.08), transparent 26rem),
    linear-gradient(180deg, #f9f6f0 0%, var(--paper) 44rem);
  color: var(--ink);
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(225, 91, 61, 0.34);
  outline-offset: 2px;
}

a {
  color: inherit;
}

.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #f8f4ec;
}

.hero::after {
  position: absolute;
  right: -5rem;
  bottom: -13rem;
  width: 34rem;
  height: 34rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  content: "";
  box-shadow:
    0 0 0 3rem rgba(255, 255, 255, 0.025),
    0 0 0 7rem rgba(255, 255, 255, 0.02);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 74px 0 52px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #f49a82;
}

.hero h1 {
  max-width: 750px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.9;
}

.hero h1 em {
  color: #f49a82;
  font-style: italic;
}

.hero-copy {
  max-width: 610px;
  margin: 31px 0 0;
  color: #bdc7ca;
  font-size: 1.04rem;
  line-height: 1.65;
}

.hero-rule {
  width: 100%;
  height: 1px;
  margin-top: 44px;
  background: linear-gradient(90deg, var(--accent), rgba(225, 91, 61, 0.1) 74%, transparent);
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.26fr) minmax(350px, 0.74fr);
  gap: 32px;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 38px 0 60px;
  align-items: start;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 249, 0.88);
  box-shadow: var(--shadow);
}

.search-panel {
  padding: 25px;
}

.search-label {
  display: block;
  margin-bottom: 10px;
  color: var(--ink-soft);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 53px;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  background: #fffefa;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(225, 91, 61, 0.1);
}

.search-icon {
  padding-left: 16px;
  color: var(--accent);
  font-size: 1.45rem;
  line-height: 1;
}

.search-box input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 1rem;
}

.search-box input::placeholder {
  color: #9da5a7;
}

.clear-button {
  margin-right: 8px;
  padding: 5px 8px;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--ink-faint);
  font-size: 0.74rem;
  font-weight: 700;
}

.clear-button:hover {
  background: var(--paper-deep);
  color: var(--ink);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.filter-grid label,
.sort-control {
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.filter-grid select,
.sort-control select {
  display: block;
  width: 100%;
  min-height: 37px;
  margin-top: 7px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fffefa;
  color: var(--ink);
  font-size: 0.79rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.results-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  min-height: 62px;
  padding: 20px 3px 12px;
}

.results-toolbar strong {
  display: inline-block;
  font-size: 0.91rem;
}

.muted {
  color: var(--ink-faint);
  font-size: 0.76rem;
}

.results-toolbar .muted {
  margin-left: 7px;
}

.results-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar-button {
  min-height: 37px;
  margin-top: 0;
  padding: 0 11px;
}

.toolbar-status {
  min-width: 118px;
  margin-left: 0 !important;
  text-align: right;
}

.toolbar-status.is-error {
  color: var(--accent-deep);
}

.sort-control {
  display: flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
}

.sort-control select {
  display: inline-block;
  width: auto;
  min-width: 165px;
  margin-top: 0;
}

.paper-list {
  display: grid;
  gap: 12px;
}

.paper-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.paper-card::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--line-dark);
  content: "";
}

.paper-card:hover,
.paper-card.is-selected {
  border-color: #c7a49a;
  box-shadow: 0 12px 30px rgba(32, 43, 46, 0.08);
  transform: translateY(-2px);
}

.paper-card.is-selected::before,
.paper-card:hover::before {
  background: var(--accent);
}

.card-main {
  display: block;
  width: 100%;
  padding: 21px 22px 18px 27px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.card-main:hover {
  background: rgba(248, 221, 212, 0.13);
}

.card-meta,
.detail-meta,
.link-row,
.paper-card-footer,
.detail-heading-row,
.stat-row,
.provenance-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.card-meta {
  justify-content: space-between;
  gap: 12px;
  color: var(--ink-faint);
  font-size: 0.69rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-id {
  color: var(--accent-deep);
}

.card-title {
  margin: 10px 0 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.16;
}

.title-variant {
  margin: 7px 0 0;
  color: var(--ink-faint);
  font-size: 0.74rem;
  line-height: 1.45;
}

.card-summary {
  display: -webkit-box;
  overflow: hidden;
  margin: 13px 0 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.paper-card-footer {
  justify-content: space-between;
  gap: 12px;
  padding: 0 22px 17px 27px;
  color: var(--ink-faint);
  font-size: 0.73rem;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.card-links a,
.text-link {
  color: var(--accent-deep);
  font-size: 0.73rem;
  font-weight: 800;
  text-decoration: none;
}

.card-links a:hover,
.text-link:hover {
  text-decoration: underline;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 3px 8px;
  border-radius: 99px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  font-size: 0.63rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge.pdf-reviewed {
  background: var(--teal-pale);
  color: var(--teal);
}

.badge.abstract-reviewed {
  background: var(--gold-pale);
  color: #79530e;
}

.badge.catalog-only {
  background: #e7e7e1;
  color: #626963;
}

.badge.track {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-faint);
}

.score-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  padding: 3px 8px 4px;
  border-radius: 3px;
  background: var(--accent-pale);
  color: var(--accent-deep);
  font-weight: 900;
  line-height: 1;
}

.score-pill strong {
  font-size: 0.95rem;
}

.score-pill small {
  color: inherit;
  font-size: 0.58rem;
  font-weight: 800;
  opacity: 0.8;
}

.empty-state {
  padding: 39px 28px;
  text-align: center;
}

.empty-state h2,
.detail-placeholder h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.8rem;
  font-weight: 500;
  letter-spacing: -0.035em;
}

.empty-state p:last-of-type,
.detail-placeholder p:last-of-type {
  max-width: 440px;
  margin: 12px auto 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.6;
}

.button {
  min-height: 38px;
  margin-top: 19px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 0.76rem;
  font-weight: 800;
}

.button-secondary {
  border-color: var(--line-dark);
  background: transparent;
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.detail-column {
  position: sticky;
  top: 22px;
  min-width: 0;
}

.detail-placeholder {
  min-height: 390px;
  padding: 42px 32px;
  text-align: center;
}

.placeholder-mark {
  display: block;
  margin-bottom: 23px;
  color: var(--accent);
  font-size: 3.2rem;
  line-height: 0.8;
}

.detail-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.detail-header {
  padding: 28px 28px 25px;
  background: var(--ink);
  color: #f8f4ec;
}

.detail-heading-row {
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.detail-header .eyebrow {
  margin-bottom: 10px;
}

.detail-header h2 {
  max-width: 510px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.detail-title-variant {
  margin: 11px 0 0;
  color: #aebabc;
  font-size: 0.76rem;
  line-height: 1.5;
}

.detail-header .detail-meta {
  gap: 7px;
  margin-top: 20px;
}

.detail-header .badge.track {
  border-color: rgba(255, 255, 255, 0.24);
  color: #c0cbcc;
}

.detail-header .badge.pdf-reviewed,
.detail-header .badge.abstract-reviewed,
.detail-header .badge.catalog-only {
  border: 0;
}

.detail-body {
  padding: 23px 28px 28px;
}

.score-block {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 15px;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 21px;
  border-bottom: 1px solid var(--line);
}

.score-number {
  color: var(--accent-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 3.45rem;
  letter-spacing: -0.08em;
  line-height: 0.9;
}

.score-number small {
  color: var(--ink-faint);
  font-family: "Segoe UI", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0;
}

.score-block strong {
  display: block;
  font-size: 0.87rem;
}

.score-block p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.73rem;
  line-height: 1.45;
}

.detail-section {
  margin-top: 26px;
}

.detail-section:first-of-type {
  margin-top: 0;
}

.section-label {
  margin: 0 0 10px;
  color: var(--accent-deep);
  font-size: 0.67rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.detail-section h3 {
  margin: 0 0 7px;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.17rem;
  font-weight: 500;
  letter-spacing: -0.025em;
}

.detail-section p,
.detail-section li {
  color: var(--ink-soft);
  font-size: 0.81rem;
  line-height: 1.62;
}

.detail-section p {
  margin: 0;
  white-space: pre-line;
}

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

.detail-section li + li {
  margin-top: 8px;
}

.insight-grid {
  display: grid;
  gap: 11px;
}

.insight-card {
  padding: 13px 14px;
  border-left: 3px solid var(--line-dark);
  background: #f5f2eb;
}

.insight-card.is-provisional {
  border-left-color: var(--gold);
  background: #fbf5e6;
}

.insight-card h4 {
  margin: 0 0 5px;
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.insight-card p {
  font-size: 0.78rem;
}

.source-line {
  margin-top: 7px !important;
  color: var(--ink-faint) !important;
  font-size: 0.65rem !important;
  font-style: italic;
}

.provenance {
  padding-top: 21px;
  border-top: 1px solid var(--line);
}

.provenance-row {
  justify-content: space-between;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid #ebe7df;
  font-size: 0.72rem;
}

.provenance-row:last-child {
  border-bottom: 0;
}

.provenance-row dt {
  color: var(--ink-faint);
  font-weight: 700;
}

.provenance-row dd {
  max-width: 70%;
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  text-align: right;
  overflow-wrap: anywhere;
}

.hash {
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.61rem;
}

.link-row {
  gap: 9px;
  margin-top: 18px;
}

.link-button {
  display: inline-flex;
  align-items: center;
  min-height: 35px;
  padding: 0 11px;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  color: var(--ink);
  font-size: 0.71rem;
  font-weight: 800;
  text-decoration: none;
}

.link-button:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.link-button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fffaf4;
}

.link-button.primary:hover {
  border-color: var(--accent-deep);
  background: var(--accent-deep);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 30px;
  color: var(--ink-faint);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
}

.loading-state,
.error-state {
  padding: 30px 25px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.6;
}

.error-state strong {
  display: block;
  margin-bottom: 7px;
  color: var(--accent-deep);
}

@media (max-width: 980px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .detail-column {
    position: static;
  }

  .detail-panel,
  .detail-placeholder {
    max-width: none;
  }
}

@media (max-width: 680px) {
  .hero-inner,
  .page-shell,
  .site-footer {
    width: min(100% - 28px, 1240px);
  }

  .hero-inner {
    padding: 50px 0 36px;
  }

  .hero h1 {
    font-size: clamp(2.75rem, 15vw, 5rem);
  }

  .hero-copy {
    font-size: 0.9rem;
  }

  .page-shell {
    gap: 20px;
    padding-top: 20px;
  }

  .search-panel {
    padding: 18px;
  }

  .filter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .results-toolbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 11px;
    padding-top: 18px;
  }

  .results-actions {
    display: grid;
    width: 100%;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 11px;
    align-items: center;
  }

  .toolbar-status {
    min-width: 0;
  }

  .results-actions .sort-control {
    grid-column: 1 / -1;
    width: 100%;
  }

  .sort-control select {
    width: 100%;
  }

  .card-main {
    padding: 18px 16px 16px 21px;
  }

  .paper-card-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 0 16px 16px 21px;
  }

  .detail-header,
  .detail-body {
    padding-right: 20px;
    padding-left: 20px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}