/* ============================================================================
   Eden Archive · styles
   Loaded only on /archive and /archive/<slug>. Additive to styles.css.
   ============================================================================ */

/* ---------- landing page ---------- */

.arc-landing {
  padding: clamp(72px, 10vw, 128px) 0 clamp(64px, 8vw, 104px);
}

.arc-head {
  display: grid;
  gap: 28px;
  max-width: 860px;
  margin-bottom: clamp(48px, 7vw, 80px);
  padding-bottom: clamp(32px, 5vw, 48px);
  border-bottom: 1px solid var(--ink-edge);
}
.arc-head .mono-tag { color: var(--paper-faint); }
.arc-head h1 {
  font-family: var(--display);
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 300;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  letter-spacing: -0.025em;
  line-height: 1.06;
  max-width: 16ch;
}
.arc-head p {
  color: var(--paper-mute);
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.75;
}

/* ---------- controls ---------- */

.arc-controls {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3vw, 36px);
  row-gap: 20px;
  align-items: flex-start;
  padding-bottom: clamp(28px, 4vw, 40px);
  border-bottom: 1px solid var(--ink-edge);
  margin-bottom: clamp(28px, 4vw, 36px);
}
.arc-control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}
.arc-control-label {
  color: var(--paper-faint);
  letter-spacing: 0.16em;
}
.arc-control-search { flex: 1 1 240px; min-width: 220px; }

.arc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.arc-chip {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-mute);
  background: transparent;
  border: 1px solid var(--ink-line);
  padding: 6px 10px 5px;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}
.arc-chip:hover { color: var(--paper); border-color: var(--paper-faint); }
.arc-chip.is-active {
  color: var(--ink-void);
  background: var(--paper);
  border-color: var(--paper);
}
.arc-chip.pillar-sovereign.is-active { background: var(--bronze); border-color: var(--bronze); }
.arc-chip.pillar-durable.is-active   { background: var(--sage);   border-color: var(--sage);   }
.arc-chip.pillar-frontier.is-active  { background: var(--oxblood); border-color: var(--oxblood); color: var(--paper); }
.arc-chip.pillar-cross.is-active     { background: var(--paper);  border-color: var(--paper);  }

.arc-search {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--ink-line);
  color: var(--paper);
  font-family: var(--body);
  font-size: 15px;
  font-weight: 300;
  padding: 6px 0 8px;
  width: 100%;
  outline: none;
  letter-spacing: 0.005em;
  transition: border-color 200ms ease;
}
.arc-search::placeholder { color: var(--paper-faint); }
.arc-search:focus { border-color: var(--bronze); }

/* ---------- stage (graph / list) ---------- */

.arc-stage {
  position: relative;
  min-height: 520px;
}

.arc-graph-wrap {
  position: relative;
  width: 100%;
  height: clamp(520px, 68vh, 760px);
  border: 1px solid var(--ink-edge);
  background: linear-gradient(180deg, transparent 0%, rgba(17,17,20,0.25) 100%);
  overflow: hidden;
}
.arc-graph { display: block; width: 100%; height: 100%; }

.arc-legend {
  position: absolute;
  bottom: 14px;
  left: 16px;
  display: flex;
  gap: 16px;
  color: var(--paper-faint);
  pointer-events: none;
}
.arc-legend .dot {
  display: inline-block;
  width: 8px; height: 8px;
  margin-right: 6px;
  transform: translateY(1px);
}
.arc-legend .dot.pillar-sovereign { background: var(--bronze); }
.arc-legend .dot.pillar-durable   { background: var(--sage);   }
.arc-legend .dot.pillar-frontier  { background: var(--oxblood); }
.arc-legend .dot.pillar-cross     { background: var(--paper);  }

.arc-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  text-align: center;
  color: var(--paper-mute);
  pointer-events: none; /* never block clicks on the canvas underneath */
}
/* display: flex above defeats the browser's default [hidden]{display:none};
   restore hide behavior explicitly so the overlay vanishes with >3 nodes. */
.arc-empty[hidden] { display: none !important; }

/* ---------- hover card (graph preview) ---------- */

.arc-hover-card {
  position: absolute;
  width: 280px;
  max-width: calc(100% - 32px);
  padding: 14px 16px 16px;
  background: rgba(17, 17, 20, 0.94);
  border: 1px solid var(--ink-edge);
  color: var(--paper);
  pointer-events: none;
  z-index: 5;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.arc-hover-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  color: var(--paper-faint);
  margin-bottom: 8px;
}
.arc-hover-title {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 400;
  font-variation-settings: "opsz" 100, "SOFT" 25;
  letter-spacing: -0.012em;
  line-height: 1.2;
  margin-bottom: 8px;
}
.arc-hover-abstract {
  font-size: 13px;
  line-height: 1.55;
  color: var(--paper-mute);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.arc-hover-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

/* ---------- list view ---------- */

.arc-list-wrap {
  border-top: 1px solid var(--ink-edge);
  padding-top: clamp(28px, 4vw, 40px);
}
.arc-list-year { margin-bottom: clamp(28px, 4vw, 40px); }
.arc-list-year-label {
  color: var(--bronze);
  letter-spacing: 0.18em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-edge);
  margin-bottom: 14px;
}
.arc-list-items {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.arc-list-item { border-bottom: 1px solid var(--ink-edge); }
.arc-list-link {
  display: block;
  padding: 18px 0 22px;
  color: var(--paper);
  border-bottom: 0;
  transition: background 180ms ease, padding 180ms ease;
}
.arc-list-link:hover {
  background: rgba(200, 169, 106, 0.025);
  padding-left: 14px;
  border-bottom: 0;
}
.arc-list-main {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}
.arc-list-title {
  font-family: var(--display);
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 400;
  font-variation-settings: "opsz" 100, "SOFT" 25;
  letter-spacing: -0.012em;
  line-height: 1.25;
}
.arc-list-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--paper-faint);
  margin-bottom: 6px;
}
.arc-list-abstract {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--paper-mute);
  max-width: 64ch;
  margin-bottom: 8px;
}
.arc-list-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.arc-list-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-faint);
  padding: 2px 7px 1px;
  border: 1px solid var(--ink-line);
}
.arc-list-empty {
  padding: 40px 0;
  color: var(--paper-mute);
  text-align: center;
}

/* Pillar dot, shared across list + related sections */
.arc-pillar-dot {
  display: inline-block;
  width: 8px; height: 8px;
  margin-right: 6px;
  transform: translateY(-1px);
  flex: 0 0 auto;
}
.arc-pillar-dot.pillar-sovereign { background: var(--bronze); }
.arc-pillar-dot.pillar-durable   { background: var(--sage);   }
.arc-pillar-dot.pillar-frontier  { background: var(--oxblood); }
.arc-pillar-dot.pillar-cross     { background: var(--paper);  }

/* ---------- piece page ---------- */

.arc-piece .doc-head h1 {
  max-width: 22ch;
  font-size: clamp(36px, 5.2vw, 60px);
  letter-spacing: -0.022em;
}
.arc-piece .pillar-v { color: var(--bronze); }
.arc-piece.pillar-durable  .pillar-v { color: var(--sage); }
.arc-piece.pillar-frontier .pillar-v { color: var(--oxblood); }
.arc-piece.pillar-cross    .pillar-v { color: var(--paper); }

.arc-abstract {
  font-family: var(--display);
  font-size: clamp(19px, 1.9vw, 22px);
  font-weight: 350;
  font-variation-settings: "opsz" 100, "SOFT" 40;
  line-height: 1.45;
  color: var(--paper);
  letter-spacing: -0.008em;
  max-width: 52ch;
  margin-top: 8px;
}

.arc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.arc-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-mute);
  padding: 4px 9px 3px;
  border: 1px solid var(--ink-line);
  transition: color 180ms ease, border-color 180ms ease;
}
.arc-tag:hover {
  color: var(--paper);
  border-color: var(--paper-faint);
  border-bottom-color: var(--paper-faint);
}

/* article body overrides (archive-specific) */
.arc-article h2 {
  font-size: clamp(22px, 2.2vw, 26px);
  margin-top: clamp(40px, 5vw, 60px);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink-edge);
}
.arc-article h2:first-child { margin-top: 0; }
.arc-article p {
  font-size: 16px;
  line-height: 1.78;
  max-width: 66ch;
  color: var(--paper);
  margin-bottom: 1.2em;
}
.arc-article p + p { color: var(--paper-mute); }
.arc-article strong { color: var(--paper); font-weight: 500; }
.arc-article blockquote {
  font-family: var(--display);
  font-size: clamp(19px, 1.9vw, 22px);
  font-weight: 350;
  font-variation-settings: "opsz" 100, "SOFT" 40;
  line-height: 1.45;
  color: var(--paper);
  padding: 18px 0 18px 24px;
  margin: 28px 0;
  border-left: 2px solid var(--bronze);
  max-width: 48ch;
  letter-spacing: -0.008em;
}
.arc-piece.pillar-durable  .arc-article blockquote { border-left-color: var(--sage); }
.arc-piece.pillar-frontier .arc-article blockquote { border-left-color: var(--oxblood); }
.arc-piece.pillar-cross    .arc-article blockquote { border-left-color: var(--paper-faint); }

/* Inline figures in archive pieces (structural SVG wireframes) */
.tp-figure {
  margin: clamp(40px, 6vw, 64px) 0;
  padding: clamp(32px, 4vw, 48px) clamp(8px, 2vw, 20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  border-top: 1px solid var(--ink-edge);
  border-bottom: 1px solid var(--ink-edge);
  width: min(100%, 860px);
}
.tp-diagram {
  width: 100%;
  max-width: 480px;
  height: auto;
  color: var(--bronze);
  opacity: 0.95;
}
.tp-diagram-wide {
  width: 100%;
  max-width: 780px;
  height: auto;
  color: var(--bronze);
  opacity: 1;
}
.tp-caption {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-faint);
  text-align: center;
  line-height: 1.5;
}
.arc-piece.pillar-cross .tp-diagram,
.arc-piece.pillar-cross .tp-diagram-wide { color: var(--bronze); }

.arc-article ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.4em 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 66ch;
}
.arc-article li {
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--paper-mute);
  padding-left: 20px;
  position: relative;
}
.arc-article li::before {
  content: "\00b7";
  position: absolute;
  left: 4px;
  top: 0;
  color: var(--bronze);
  font-family: var(--mono);
  font-size: 20px;
  line-height: 1;
}
.arc-article code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--ink-deep);
  padding: 1px 5px;
  color: var(--paper);
}
.arc-article pre {
  font-family: var(--mono);
  background: var(--ink-deep);
  border: 1px solid var(--ink-edge);
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  margin: 20px 0;
  max-width: 72ch;
}
.arc-article pre code { background: none; padding: 0; }
.arc-article hr {
  border: none;
  border-top: 1px solid var(--ink-edge);
  margin: 32px 0;
}

/* Inline cross-references ([[slug]] renders) */
.arc-article a.xref {
  color: var(--paper);
  border-bottom: 1px solid var(--paper-faint);
  transition: border-color 180ms ease, color 180ms ease;
}
.arc-article a.xref:hover {
  color: var(--bronze);
  border-bottom-color: var(--bronze);
}
.arc-article .xref-missing {
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 0 4px;
  border: 1px dashed var(--oxblood-dim);
}

/* ---------- related section on a piece ---------- */

.arc-related {
  margin-top: clamp(56px, 8vw, 96px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--ink-edge);
}
.arc-related-head {
  color: var(--bronze);
  letter-spacing: 0.16em;
  margin-bottom: 20px;
}
.arc-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 36px);
}
@media (min-width: 780px) {
  .arc-related-grid { grid-template-columns: repeat(3, 1fr); }
}
.arc-related-label {
  color: var(--paper-faint);
  letter-spacing: 0.16em;
  margin-bottom: 10px;
}
.arc-related-list { display: flex; flex-direction: column; gap: 10px; }
.arc-related-item {
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid var(--ink-edge);
  color: var(--paper);
  transition: padding 180ms ease, background 180ms ease;
}
.arc-related-item:hover {
  background: rgba(200, 169, 106, 0.025);
  padding-left: 10px;
  border-bottom-color: var(--paper-faint);
}
.arc-related-title {
  display: block;
  font-family: var(--display);
  font-size: 15.5px;
  font-weight: 400;
  font-variation-settings: "opsz" 100, "SOFT" 25;
  letter-spacing: -0.008em;
  line-height: 1.3;
  margin-bottom: 4px;
}
.arc-related-meta {
  display: flex;
  align-items: center;
  color: var(--paper-faint);
  letter-spacing: 0.12em;
}
.arc-rel-empty { color: var(--paper-faint); font-size: 13px; padding: 6px 0; }

/* ---------- archive foot ---------- */

.arc-foot {
  margin-top: clamp(48px, 7vw, 72px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--ink-edge);
  color: var(--paper-mute);
  font-size: 14.5px;
}
.arc-foot a {
  color: var(--paper);
  border-bottom: 1px solid var(--paper-faint);
}
.arc-foot a:hover { color: var(--bronze); border-bottom-color: var(--bronze); }

/* ---------- reveal animation ---------- */
/* NOTE: .reveal is already defined in styles.css as a pure-CSS animation
   that targets the *children* of a .reveal container (no JS needed).
   We intentionally do NOT redefine it here — duplicating it with an
   opacity:0 rule on the container itself would break the existing
   animation and hide everything until JS runs.                       */

/* ---------- narrow screens ---------- */

@media (max-width: 620px) {
  .arc-graph-wrap { height: clamp(420px, 62vh, 580px); }
  .arc-controls { row-gap: 16px; }
  .arc-legend { font-size: 9px; gap: 10px; }
}