:root {
  color-scheme: light;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --misd-navy: #062844;
  --misd-gray: #96918E;
  --black: #000000;
  --white: #FFFFFF;
  --navy-soft: rgba(6, 40, 68, 0.08);
  --gray-soft: rgba(150, 145, 142, 0.1);
  --navy: var(--misd-navy);
  --ink: var(--black);
  --muted: rgba(0, 0, 0, 0.62);
  --line: rgba(150, 145, 142, 0.38);
  --line-strong: rgba(150, 145, 142, 0.7);
  --surface: var(--white);
  --surface-soft: var(--gray-soft);
  --success: var(--misd-navy);
  --danger: var(--black);
  --shadow-sm: 0 3px 12px rgba(6, 40, 68, 0.06);
  --shadow-md: 0 12px 30px rgba(6, 40, 68, 0.1);
  --radius-sm: 8px;
  --radius-md: 13px;
  --radius-lg: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--surface-soft);
}

button,
input,
select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: 0.48; }
a { color: inherit; }

:focus-visible {
  outline: 3px solid rgba(6, 40, 68, 0.3);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: #fff;
  background: var(--misd-navy);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.shell {
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 16px 20px 20px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  margin-bottom: 12px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.brand {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 13px;
  align-items: center;
  min-width: 0;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: 64px;
  height: 58px;
  object-fit: contain;
}

.brand strong,
.brand em { display: block; }

.brand strong {
  color: var(--misd-navy);
  font-size: 0.71rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.brand em {
  margin-top: 2px;
  color: var(--ink);
  font-size: 0.94rem;
  font-style: normal;
  font-weight: 700;
}

.collection-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--success);
  font-size: 0.77rem;
  font-weight: 700;
  white-space: nowrap;
}

.collection-status span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--misd-navy);
  box-shadow: 0 0 0 4px rgba(6, 40, 68, 0.12);
}

main { min-width: 0; }

.eyebrow {
  margin: 0;
  color: var(--misd-navy);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { overflow-wrap: anywhere; }

.database-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    radial-gradient(circle at 92% 10%, rgba(255, 255, 255, 0.12), transparent 26%),
    linear-gradient(135deg, var(--misd-navy), var(--misd-navy));
  box-shadow: var(--shadow-md);
}

.database-hero .eyebrow { color: rgba(255, 255, 255, 0.8); }

.database-hero h1 {
  max-width: 780px;
  margin: 7px 0 0;
  font-size: clamp(1.85rem, 4vw, 3rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.database-hero p:not(.eyebrow) {
  max-width: 720px;
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.92rem;
  line-height: 1.55;
}

.database-search {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  max-width: 720px;
  margin-top: 18px;
  padding: 5px;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.14);
}

.database-search input {
  min-height: 44px;
  padding: 9px 12px;
  border: 0;
  color: var(--ink);
  background: transparent;
  outline: 0;
}

.database-search input:focus { box-shadow: none; }

.database-search button {
  min-width: 92px;
  border: 0;
  border-radius: 7px;
  color: #fff;
  background: var(--misd-navy);
  font-size: 0.82rem;
  font-weight: 750;
}

.database-search button:hover { background: var(--misd-navy); }

.hero-count {
  min-width: 142px;
  padding: 17px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  text-align: center;
}

.hero-count strong {
  display: block;
  font-size: 2.5rem;
  line-height: 1;
  letter-spacing: -0.05em;
}

.hero-count span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.76rem;
  font-weight: 700;
}

.topic-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  margin: 14px 0 0;
  padding: 0 4px;
  border-bottom: 1px solid var(--line-strong);
  scrollbar-width: none;
}

.topic-tabs::-webkit-scrollbar { display: none; }

.topic-tab {
  flex: 0 0 auto;
  min-height: 42px;
  padding: 10px 12px 9px;
  border: 0;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  background: transparent;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.topic-tab:hover { color: var(--misd-navy); }

.topic-tab.active {
  border-bottom-color: var(--misd-navy);
  color: var(--misd-navy);
}

.database-layout {
  display: grid;
  grid-template-columns: 246px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding-top: 18px;
}

.database-sidebar {
  position: sticky;
  top: 14px;
  display: grid;
  gap: 12px;
}

.filters {
  display: grid;
  gap: 15px;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.filter-heading,
.results-toolbar,
.reading-panel-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
}

.filter-heading { align-items: center; }

.filter-heading h2,
.results-toolbar h2,
.reading-panel-head h2 {
  margin: 4px 0 0;
  color: var(--navy);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.clear-button {
  padding: 4px;
  border: 0;
  color: var(--misd-navy);
  background: transparent;
  font-size: 0.75rem;
  font-weight: 750;
}

label { display: grid; gap: 6px; }

label > span {
  color: var(--navy);
  font-size: 0.75rem;
  font-weight: 750;
}

input,
select {
  width: 100%;
  min-height: 42px;
  padding: 9px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  outline: none;
}

input::placeholder { color: var(--misd-gray); }

input:focus,
select:focus {
  border-color: var(--misd-navy);
  box-shadow: 0 0 0 3px rgba(6, 40, 68, 0.12);
}

.filter-note {
  display: grid;
  gap: 4px;
  padding: 11px;
  border-radius: 8px;
  color: var(--misd-navy);
  background: var(--navy-soft);
  font-size: 0.73rem;
  line-height: 1.45;
}

.filter-note span { color: var(--muted); }

.assignment-card {
  padding: 17px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--misd-navy);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.assignment-card h2 {
  margin: 6px 0 14px;
  color: var(--navy);
  font-size: 1rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.assignment-card a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--white);
  background: var(--misd-navy);
  font-size: 0.77rem;
  font-weight: 750;
  text-decoration: none;
}

.assignment-card a:hover { background: var(--navy); }

.assignment-card a:focus-visible {
  outline: 3px solid rgba(6, 40, 68, 0.24);
  outline-offset: 3px;
}

.results-panel { min-width: 0; scroll-margin-top: 12px; }

.results-toolbar {
  min-height: 64px;
  padding: 3px 2px 12px;
  border-bottom: 1px solid var(--line);
}

.sort-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sort-control > span { white-space: nowrap; }
.sort-control select { min-width: 150px; min-height: 38px; }

.applied-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  min-height: 46px;
  padding: 9px 0;
}

.applied-filters strong {
  margin-right: 2px;
  color: var(--muted);
  font-size: 0.7rem;
}

.applied-filters span {
  padding: 5px 8px;
  border: 1px solid rgba(150, 145, 142, 0.4);
  border-radius: 999px;
  color: var(--misd-navy);
  background: var(--gray-soft);
  font-size: 0.7rem;
  font-weight: 650;
}

.applied-filters button {
  padding: 4px 6px;
  border: 0;
  color: var(--misd-navy);
  background: transparent;
  font-size: 0.7rem;
  font-weight: 750;
}

.result-list {
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
  list-style: none;
}

.result-list > li + li { border-top: 1px solid var(--line); }

.result-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 138px;
  gap: 14px;
  align-items: start;
  padding: 17px 18px;
  transition: background 140ms ease;
}

.result-row:hover,
.result-row:focus {
  background: var(--gray-soft);
  outline: none;
}

.result-row:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid rgba(6, 40, 68, 0.25);
  outline-offset: -3px;
}

.result-number {
  padding-top: 2px;
  color: var(--misd-gray);
  font-size: 0.75rem;
  font-weight: 700;
}

.result-main { min-width: 0; }

.result-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  color: var(--misd-navy);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.result-kicker span + span { color: var(--muted); }

.result-row h2 {
  margin: 6px 0 0;
  color: var(--navy);
  font-size: 1.05rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.result-citation {
  margin: 5px 0 0;
  color: var(--black);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.45;
}

.result-summary {
  display: -webkit-box;
  overflow: hidden;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
}

.tag-row span {
  min-height: 22px;
  padding: 3px 7px;
  border: 1px solid rgba(150, 145, 142, 0.4);
  border-radius: 999px;
  color: var(--black);
  background: var(--gray-soft);
  font-size: 0.65rem;
  font-weight: 650;
}

.result-actions {
  display: grid;
  gap: 10px;
  justify-items: stretch;
}

.result-actions > span {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  text-align: right;
}

.result-actions button,
.primary-button,
.back-button,
.tool-links a {
  min-height: 38px;
  padding: 8px 11px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 750;
  text-decoration: none;
}

.result-actions button,
.primary-button,
.tool-links a:first-child {
  color: #fff;
  background: var(--misd-navy);
}

.result-actions button:hover,
.primary-button:hover,
.tool-links a:first-child:hover { background: var(--misd-navy); }

.pagination {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
}

.pagination > div {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  justify-content: center;
}

.pagination button {
  min-width: 38px;
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  color: var(--misd-navy);
  background: #fff;
  font-size: 0.75rem;
  font-weight: 750;
}

.pagination button.active {
  border-color: var(--misd-navy);
  color: #fff;
  background: var(--misd-navy);
}

.empty {
  display: grid;
  min-height: 240px;
  padding: 32px;
  place-items: center;
  align-content: center;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: #fff;
  text-align: center;
}

.empty h2 { margin: 12px 0 0; color: var(--navy); font-size: 1.1rem; }
.empty p { max-width: 560px; margin: 8px 0 16px; color: var(--muted); line-height: 1.55; }
.empty.danger { border-style: solid; border-color: rgba(150, 145, 142, 0.45); background: var(--gray-soft); }
.empty.danger h2 { color: var(--danger); }

.loader {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(150, 145, 142, 0.4);
  border-top-color: var(--misd-navy);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

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

.detail { display: grid; gap: 14px; }

.back-button {
  width: fit-content;
  border-color: var(--line-strong);
  color: var(--misd-navy);
  background: #fff;
}

.detail-head,
.reading-panel,
.source-tools {
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.detail-head {
  padding: clamp(24px, 4vw, 40px);
  border-top: 5px solid var(--misd-navy);
  border-radius: var(--radius-lg);
}

.detail-head h1 {
  max-width: 980px;
  margin: 9px 0 11px;
  color: var(--navy);
  font-size: clamp(1.85rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.detail-head p,
.source-tools p {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.58;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 15px;
  align-items: start;
}

.reading-panel,
.source-tools {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-md);
}

.reading-panel-head {
  margin-bottom: 24px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line);
}

.reading-panel-head > p { margin: 0; color: var(--muted); font-size: 0.74rem; }

.reader-content {
  max-width: 70ch;
  color: var(--black);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.06rem;
  line-height: 1.83;
}

.reader-content p { margin: 0 0 1.35em; }

.reader-content h3 {
  margin: 2em 0 0.75em;
  color: var(--misd-navy);
  font-family: Inter, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reader-content h3:first-child { margin-top: 0; }

.source-tools {
  position: sticky;
  top: 14px;
  display: grid;
  gap: 0;
}

.source-tools section { padding: 17px 0; border-top: 1px solid var(--line); }
.source-tools section:first-child { padding-top: 0; border-top: 0; }
.source-tools h2 { margin: 5px 0 9px; color: var(--navy); font-size: 0.92rem; }
.source-tools .tag-row { margin-top: 0; }
.mla { padding-left: 24px; color: var(--ink) !important; text-indent: -24px; }
.citation-tip { margin-top: 9px !important; font-size: 0.73rem !important; }
.tool-links { display: grid; gap: 8px; }
.tool-links a { display: flex; align-items: center; justify-content: center; text-align: center; }
.tool-links a:last-child { border-color: var(--line-strong); color: var(--misd-navy); background: #fff; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 30px;
  padding: 18px 4px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.72rem;
}

@media (max-width: 980px) {
  .database-layout { grid-template-columns: 1fr; }
  .database-sidebar { position: static; }
  .filters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
  }
  .filter-heading,
  .filter-note { grid-column: 1 / -1; }
  .detail-grid { grid-template-columns: 1fr; }
  .source-tools { position: static; }
}

@media (max-width: 720px) {
  .database-hero { grid-template-columns: 1fr; }
  .hero-count { width: fit-content; text-align: left; }
  .results-toolbar { align-items: flex-start; flex-direction: column; }
  .sort-control { width: 100%; }
  .sort-control select { flex: 1; }
  .result-row { grid-template-columns: 28px minmax(0, 1fr); }
  .result-actions { grid-column: 2; display: flex; align-items: center; justify-content: space-between; }
}

@media (max-width: 640px) {
  .shell { padding: 9px; }
  .topbar { align-items: flex-start; padding: 8px; }
  .brand { grid-template-columns: 54px minmax(0, 1fr); }
  .brand-logo { width: 54px; height: 49px; }
  .brand em { font-size: 0.84rem; }
  .collection-status { display: none; }
  .database-hero { padding: 22px 18px; border-radius: 14px; }
  .database-hero h1 { font-size: clamp(1.8rem, 10vw, 2.4rem); }
  .database-search input { min-width: 0; }
  .database-search button { min-width: 82px; }
  .hero-count { display: flex; align-items: center; gap: 9px; padding: 10px 12px; }
  .hero-count strong { font-size: 1.65rem; }
  .hero-count span { margin-top: 0; }
  .topic-tabs { margin-top: 9px; }
  .database-sidebar { gap: 9px; }
  .filters { grid-template-columns: 1fr; }
  .filter-heading,
  .filter-note { grid-column: auto; }
  .result-row { grid-template-columns: 1fr; padding: 15px; }
  .result-number { display: none; }
  .result-actions { grid-column: 1; }
  .result-actions button { min-width: 120px; }
  .pagination { grid-template-columns: 1fr 1fr; }
  .pagination > div { grid-column: 1 / -1; grid-row: 1; }
  .pagination > button:last-child { grid-column: 2; }
  .detail-head,
  .reading-panel,
  .source-tools { padding: 17px; }
  .reading-panel-head { align-items: flex-start; flex-direction: column; }
  .reader-content { font-size: 1rem; line-height: 1.74; }
  .site-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body { background: #fff; }
  .topbar,
  .database-hero,
  .topic-tabs,
  .database-sidebar,
  .results-toolbar,
  .applied-filters,
  .pagination,
  .site-footer,
  .back-button,
  .tool-links { display: none !important; }
  .shell { width: 100%; padding: 0; }
  .database-layout,
  .detail-grid { display: block; }
  .result-list,
  .detail-head,
  .reading-panel,
  .source-tools { border: 0; box-shadow: none; }
  .result-row { break-inside: avoid; }
  .source-tools { margin-top: 24px; }
}