:root {
  --paper: #f7f7f4;
  --ink: #111;
  --muted: #777;
  --line: #9a9a94;
  --soft-line: #ddddda;
  --accent: #c83222;
  --blue: #174b7a;
  --green: #2f6b4f;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, "Noto Sans KR", sans-serif;
  font-size: 15px;
  line-height: 1.45;
}

button,
a {
  color: inherit;
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 28px 32px 16px;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
}

.site-header::after {
  content: "";
  display: block;
  margin-top: 14px;
  border-bottom: 2px solid var(--line);
}

.brand,
.index-link {
  text-decoration: none;
}

.brand {
  display: block;
  max-width: 100%;
  overflow: hidden;
  font-size: clamp(18px, 2.55vw, 27pt);
  font-weight: 700;
  line-height: 1.15;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hero {
  display: block;
  padding: 0 32px 28px;
}

.active-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 16px;
  color: var(--muted);
}

.active-filter span,
.capsule-list span,
.detail-info dd span,
.tags span {
  display: inline-block;
  width: fit-content;
  padding: 1px 9px 2px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
}

.active-filter .filter-count {
  border-color: transparent;
  padding-left: 0;
  color: var(--muted);
}

.hero-index {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
  width: 100%;
  min-width: 0;
}

.keyword-panel {
  grid-column: 1 / -1;
  margin-top: 22px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.index-panel,
.about {
  border-top: 1px solid var(--line);
}

.index-link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  width: 100%;
  min-height: 0;
  padding: 12px 0 10px;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
}

.index-link span {
  display: inline;
  font-size: clamp(16px, 1.45vw, 20px);
}

.index-link small,
.about-toggle small,
.section-heading h2 small {
  color: var(--muted);
  font-size: 13px;
  font-weight: 400;
  overflow-wrap: anywhere;
}

.section-heading h2 {
  margin: 0 0 24px;
  font-size: clamp(16px, 1.45vw, 20px);
  font-weight: 500;
}

.section-heading h2 small {
  margin-left: 10px;
}

.about-toggle {
  display: flex;
  gap: 10px;
  align-items: baseline;
  width: 100%;
  padding: 12px 0 10px;
  background: transparent;
  border: 0;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.about-toggle span {
  font-size: clamp(16px, 1.45vw, 20px);
}

.about.is-open .about-toggle span {
  font-weight: 700;
}

.term-list,
.keyword-columns {
  display: grid;
  gap: 5px;
}

.index-panel .panel-content {
  display: grid;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding: 2px 0 28px 1em;
  transform: translateY(-4px);
  transition:
    max-height 260ms ease,
    opacity 180ms ease,
    transform 260ms ease;
}

.index-panel.is-open .panel-content {
  max-height: 520px;
  opacity: 1;
  transform: translateY(0);
}

.index-panel.is-open .index-link span {
  font-weight: 700;
}

.term-list button,
.keyword-columns button,
.clear-button,
.apply-button,
.reset-selection-button {
  min-height: 24px;
  padding: 1px 9px 2px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  text-align: left;
}

.term-list button:hover,
.keyword-columns button:hover,
.clear-button:hover,
.apply-button:hover,
.reset-selection-button:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.term-list button.is-selected,
.keyword-columns button.is-selected {
  display: inline-block;
  width: fit-content;
  border: 1px solid var(--ink);
  font-weight: 400;
  text-decoration: none;
}

.keyword-columns {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.keyword-columns > div {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.keyword-columns h3 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
}

.keyword-columns button {
  display: block;
  width: 100%;
}

.filter-actions {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: baseline;
  margin-top: 30px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.filter-actions p {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  color: var(--muted);
}

.filter-actions p span {
  display: inline-block;
  padding: 1px 9px 2px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
}

.apply-button {
  color: var(--ink);
  text-align: right;
}

.filter-action-buttons {
  display: flex;
  gap: 18px;
  align-items: baseline;
}

.reset-selection-button {
  color: var(--muted);
}

.archive {
  padding: 44px 32px 84px;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding-top: 12px;
  border-top: 2px solid var(--line);
}

.clear-button {
  text-align: right;
}

.poster-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 12px;
}

.empty-state {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.poster-card {
  display: grid;
  min-height: 0;
  padding-top: 12px;
  grid-template-rows: auto auto;
  align-content: start;
  color: inherit;
  text-decoration: none;
}

.poster-mark {
  position: relative;
  aspect-ratio: 2 / 3;
  min-height: 0;
  background: #fff;
  border: 1px solid var(--soft-line);
  overflow: hidden;
}

.poster-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-poster-image img {
  display: block;
  width: 100%;
  height: auto;
}

.poster-mark::before,
.poster-mark::after {
  content: "";
  position: absolute;
  inset: 24px;
  border-top: 8px solid var(--tone, var(--ink));
  border-bottom: 1px solid var(--ink);
}

.poster-mark::after {
  inset: auto 24px 28px;
  height: 92px;
  border: 0;
  background:
    linear-gradient(90deg, var(--tone, var(--ink)) 0 22%, transparent 22% 34%, var(--ink) 34% 36%, transparent 36%),
    repeating-linear-gradient(0deg, transparent 0 13px, var(--soft-line) 13px 14px);
}

.poster-mark.has-image::before,
.poster-mark.has-image::after {
  display: none;
}

.poster-card:nth-child(3n + 1) {
  --tone: var(--accent);
}

.poster-card:nth-child(3n + 2) {
  --tone: var(--blue);
}

.poster-card:nth-child(3n) {
  --tone: var(--green);
}

.poster-meta {
  padding-top: 16px;
}

.poster-meta h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 500;
}

.poster-meta p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  color: var(--muted);
  font-size: 13px;
}

.about {
  max-width: none;
  margin: 0 32px 14px;
  padding: 0;
}

.about p {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  max-width: 760px;
  margin: 2px 0 28px 1em;
  font-size: 19px;
  transform: translateY(-4px);
  transition:
    max-height 260ms ease,
    opacity 180ms ease,
    transform 260ms ease;
}

.about.is-open p {
  max-height: 240px;
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .index-panel .panel-content,
  .about p {
    transition: none;
    transform: none;
  }
}

.detail-page {
  padding: 0 32px 84px;
}

.detail-hero {
  display: grid;
  grid-template-columns: minmax(120px, 21%) minmax(0, 1fr);
  gap: 0;
  padding: 12px 0 44px;
  border-bottom: 1px solid var(--line);
}

.back-link {
  padding: 0;
  align-self: start;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--muted);
  font: inherit;
  text-decoration: none;
  text-align: left;
}

.back-link:hover {
  color: var(--accent);
}

.detail-hero p {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.45;
}

.detail-hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(18px, 2.55vw, 27pt);
  font-weight: 700;
  line-height: 1.15;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 28px;
  padding-top: 28px;
}

.detail-posters {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.detail-poster {
  margin: 0;
}

.detail-poster-image {
  background: #fff;
  border: 1px solid var(--soft-line);
  overflow: hidden;
}

.detail-placeholder {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: end start;
  padding: 18px;
  color: var(--muted);
  background:
    linear-gradient(180deg, transparent 0 18%, var(--soft-line) 18% calc(18% + 1px), transparent calc(18% + 1px)),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 82%, white) 0 28%, transparent 28%),
    #fff;
}

.detail-placeholder span {
  font-size: 28px;
}

.detail-poster figcaption {
  padding-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.detail-info {
  position: sticky;
  top: 110px;
  align-self: start;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.detail-description {
  margin: 0 0 28px;
  font-size: 18px;
}

.detail-info dl {
  margin: 0;
}

.detail-info dl div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 16px;
  padding: 10px 0;
  border-top: 1px solid var(--soft-line);
}

.detail-info dt {
  color: var(--muted);
}

.detail-info dd {
  margin: 0;
}

.detail-tags {
  margin-top: 24px;
}

@media (max-width: 980px) {
  .poster-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .detail-posters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .detail-info {
    position: static;
  }

}

@media (max-width: 680px) {
  .site-header,
  .hero,
  .archive,
  .detail-page {
    padding-left: 18px;
    padding-right: 18px;
  }

  .site-header,
  .hero,
  .hero-index,
  .keyword-columns {
    grid-template-columns: 1fr;
  }

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

  .detail-hero,
  .detail-posters {
    grid-template-columns: 1fr;
  }

  .brand {
    font-size: clamp(16px, 5vw, 24px);
    line-height: 1.28;
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }

  .site-header {
    position: static;
  }

  .hero {
    min-height: auto;
  }

  .poster-card {
    min-height: 0;
  }

  .about {
    margin-left: 18px;
    margin-right: 18px;
  }
}