:root {
  --bg: #efe4cf;
  --bg-deep: #e6d6b6;
  --ink: #1f1914;
  --muted: #6b5f52;
  --faint: #8a7c6c;
  --card: #fff8ec;
  --card-edge: #dccbb0;
  --wax: #a33b24;
  --wax-soft: #c45a3d;
  --gold: #b58532;
  --sage: #3d5a46;
  --chip: #f4ead6;
  --shadow: 0 16px 36px rgba(68, 44, 18, 0.12);
  --serif: "Fraunces", "Noto Serif SC", "Songti SC", serif;
  --sans: "Outfit", "Noto Sans SC", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(1100px 520px at 8% -8%, #f8efd8 0%, transparent 52%),
    radial-gradient(900px 480px at 108% 0%, #e3cba3 0%, transparent 46%),
    linear-gradient(180deg, #f3e8d2 0%, var(--bg) 28%, #ead8b8 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(90, 64, 32, 0.04) 3px,
    rgba(90, 64, 32, 0.04) 4px
  );
}

.page {
  position: relative;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

.masthead {
  display: grid;
  gap: 14px;
  max-width: 720px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(165, 130, 70, 0.35);
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.74rem;
  color: var(--wax);
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.lede {
  margin: 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.toolbar {
  display: grid;
  gap: 16px;
  margin: 28px 0 22px;
}

.controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 10px;
}

label.field,
.field {
  display: grid;
  gap: 6px;
}

.field span {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}

input,
select {
  width: 100%;
  height: 46px;
  border: 1px solid var(--card-edge);
  border-radius: 12px;
  background: rgba(255, 248, 236, 0.82);
  color: var(--ink);
  font: inherit;
  padding: 0 14px;
}

input:focus,
select:focus,
.chip:focus-visible,
.row:focus-visible,
.date-link:focus-visible,
.ghost:focus-visible,
.dialog-close:focus-visible {
  outline: 2px solid var(--wax);
  outline-offset: 2px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip,
.ghost {
  border: 1px solid var(--card-edge);
  background: var(--chip);
  color: var(--ink);
  border-radius: 999px;
  height: 34px;
  padding: 0 12px;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}

.chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff8ec;
}

.venue-field {
  flex: none;
}

.venue-field select {
  width: 210px;
  height: 34px;
  border-radius: 999px;
}

.day-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 2px 0 14px;
}

.day-chip {
  border: 1px solid var(--card-edge);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  height: 30px;
  padding: 0 10px;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.day-chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff8ec;
}

.abstract-label {
  margin: 18px 0 6px;
  color: var(--wax);
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}

.abstract-toggle {
  margin-top: 10px;
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.toolbar-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.filters {
  position: relative;
  flex: none;
}

.filters summary {
  list-style: none;
  cursor: pointer;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--card-edge);
  border-radius: 999px;
  background: var(--chip);
  line-height: 32px;
}

.filters summary::-webkit-details-marker {
  display: none;
}

.filter-panel {
  position: absolute;
  right: 0;
  z-index: 2;
  display: grid;
  gap: 10px;
  width: 220px;
  margin-top: 8px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--card-edge);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.reader {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.date-rail {
  position: sticky;
  top: 16px;
  display: grid;
  gap: 4px;
  max-height: calc(100vh - 32px);
  overflow: auto;
  padding-right: 4px;
}

.date-link {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.92rem;
  text-align: left;
  padding: 7px 10px;
  cursor: pointer;
}

.date-link.is-active {
  background: var(--ink);
  color: #fff8ec;
}

.day-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.day-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.day-nav {
  display: flex;
  gap: 8px;
}

.day-nav button {
  border: 1px solid var(--card-edge);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  height: 34px;
  padding: 0 12px;
  font: inherit;
  cursor: pointer;
}

.day-nav button:disabled {
  opacity: 0.35;
  cursor: default;
}

.paper-list {
  display: grid;
}

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 16px;
  align-items: center;
  width: 100%;
  padding: 14px 4px;
  border: 0;
  border-top: 1px solid rgba(165, 130, 70, 0.28);
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.row:last-child {
  border-bottom: 1px solid rgba(165, 130, 70, 0.28);
}

.row:hover,
.row:focus-visible {
  background: rgba(255, 248, 236, 0.7);
}

.row > span:first-child {
  display: grid;
  min-width: 0;
}
  margin: 0;
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.35;
}

.row-one-line {
  margin: 4px 0 0;
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.45;
}

.row-meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.row-topic {
  color: var(--sage);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 6px 0 0;
  padding: 0 0 0 10px;
  list-style: none;
}

.card-tags li {
  background: #f0e4cd;
  color: var(--sage);
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 0.75rem;
}

.card-more {
  margin-top: auto;
  color: var(--wax);
  font-size: 0.88rem;
}

.empty {
  padding: 48px 20px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--card-edge);
  border-radius: 16px;
  background: rgba(255, 248, 236, 0.45);
}

.empty h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
}

.empty p {
  margin: 0;
}

.foot {
  margin-top: 48px;
  color: var(--faint);
  font-size: 0.88rem;
}

dialog {
  width: min(680px, calc(100% - 32px));
  border: 1px solid var(--card-edge);
  border-radius: 20px;
  padding: 0;
  background: var(--card);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(38, 27, 16, 0.45);
}

.dialog-panel {
  padding: 28px 28px 24px;
}

.dialog-close {
  float: right;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.dialog-meta {
  margin: 0 0 8px;
  color: var(--wax);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.dialog-panel h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.8rem;
  line-height: 1.2;
}

.dialog-authors,
.dialog-abstract {
  color: var(--muted);
  line-height: 1.7;
}

.dialog-one-line {
  margin: 0;
  color: var(--ink);
  line-height: 1.7;
}

.dialog-links {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 16px 0 0;
}

.dialog-links a {
  color: var(--wax);
}

@media (max-width: 720px) {
  .page {
    width: min(1180px, calc(100% - 24px));
    padding-top: 28px;
  }

  .toolbar-row,
  .reader,
  .day-head {
    display: grid;
  }

  .reader,
  .day-head {
    grid-template-columns: 1fr;
  }

  .date-rail {
    position: static;
    max-height: none;
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
  }

  .filter-panel {
    right: auto;
    left: 0;
  }

  .row {
    grid-template-columns: 1fr;
  }
}