/* ══════════════════════════════════════════════════════════════
   Unified Atlas · Network shell — Phase 1
   One topbar · one cluster filter · mode toggle that swaps the stage
   between the real SVG atlas (atlas.js) and the real canvas network
   (graph.js). Both existing renderers run unmodified underneath.
   ══════════════════════════════════════════════════════════════ */

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; overflow: hidden; }
body {
  background: var(--bg);
  color: var(--fg-1);
  font-family: var(--font-sans);
}

/* ── Stage layers ───────────────────────────────────────────── */
/* Network canvases — full-viewport, behind the chrome */
#edges, #nodes { position: fixed; inset: 0; display: block; z-index: 1; }

/* Atlas wrap — fills the area below the topbar, letterboxed SVG */
.us-atlas-wrap {
  position: fixed; inset: 64px 0 0 0; z-index: 1;
  display: grid; place-items: center;
  padding: 18px 24px 24px;
  background:
    radial-gradient(ellipse at 50% 42%, rgba(191,155,48,0.06) 0%, transparent 60%),
    var(--bg);
}
.atlas-svg { width: 100%; height: 100%; display: block; }
.atlas-zoom-back { position: fixed; }

/* Mode visibility ------------------------------------------------ */
body[data-mode="atlas"] #edges,
body[data-mode="atlas"] #nodes,
body[data-mode="atlas"] .kg-detail,
body[data-mode="atlas"] .kg-zoom,
body[data-mode="atlas"] #kg-tip,
body[data-mode="atlas"] .us-net-only { display: none; }

body[data-mode="net"] .us-atlas-wrap,
body[data-mode="net"] .atlas-detail,
body[data-mode="net"] .us-atlas-only { display: none; }

/* ── Topbar ─────────────────────────────────────────────────── */
.us-top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; padding: 12px 24px;
  background: linear-gradient(180deg, rgba(250,247,240,0.97) 62%, rgba(250,247,240,0.0));
  border-bottom: 1px solid transparent;
}
body[data-mode="atlas"] .us-top {
  background: rgba(250,247,240,0.94);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom-color: var(--rule);
}
.us-top-left { display: flex; align-items: center; gap: 18px; }
.us-wm { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.us-wm .wm { font-family: var(--font-serif); font-weight: 900; font-size: 21px; letter-spacing: -0.6px; color: var(--ink); }
.us-wm .wm b { color: var(--gold); }
.us-wm .tag { font-family: var(--font-mono); font-size: 8px; letter-spacing: 2px; color: var(--gold); display: block; margin-top: 1px; }

.us-back { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.4px; color: var(--gold); text-decoration: none; }
.us-back:hover { color: var(--gold-dark); }

/* Mode toggle (the heart of Phase 1) */
.us-toggle {
  display: inline-flex; background: rgba(255,255,255,0.85);
  border: 1px solid var(--rule); border-radius: 11px; padding: 3px; gap: 2px;
  box-shadow: var(--shadow-card);
}
.us-toggle button {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-sans); font-size: 13px; font-weight: 600;
  color: var(--fg-2); background: none; border: 0;
  padding: 8px 16px; border-radius: 8px; cursor: pointer;
  transition: background 0.16s, color 0.16s;
}
.us-toggle button .sw { width: 9px; height: 9px; border-radius: 50%; background: currentColor; opacity: 0.55; }
.us-toggle button:hover { color: var(--ink); }
.us-toggle button.on { background: var(--ink); color: var(--fg-on-dark); }
.us-toggle button.on .sw { opacity: 1; background: var(--gold); }

.us-top-meta { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.6px; color: var(--fg-3); }
.us-top-meta b { color: var(--gold-dark); }

/* data-source badge (Phase 4) */
.us-source {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.4px;
  color: var(--fg-2); background: rgba(255,255,255,0.8);
  border: 1px solid var(--rule); border-radius: 999px; padding: 4px 11px; cursor: default;
}
.us-source b { color: var(--ink); }
.us-source-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 3px var(--gold-soft-a); }
.us-source.live .us-source-dot { background: var(--success); box-shadow: 0 0 0 3px var(--success-soft); }

/* ── Shared filter rail (RTL: pinned to the right / start) ───── */
.us-rail {
  position: fixed; top: 76px; right: 24px; z-index: 30; width: 272px;
  background: rgba(255,255,255,0.9); backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--rule); border-radius: 16px;
  padding: 16px 16px 14px; box-shadow: var(--shadow-elev);
}
.us-rail-eyebrow { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--gold); margin-bottom: 5px; }
.us-rail-title { font-family: var(--font-serif); font-weight: 900; font-size: 20px; letter-spacing: -0.4px; color: var(--ink); margin-bottom: 3px; }
.us-rail-sub { font-size: 11.5px; line-height: 1.5; color: var(--fg-2); margin-bottom: 14px; }
.us-rail-sub b { color: var(--ink); }

/* live stats (network mode) */
.us-stats { display: flex; gap: 8px; margin-bottom: 14px; }
.us-stat { flex: 1; background: var(--bg); border: 1px solid var(--rule); border-radius: 10px; padding: 8px 9px; text-align: center; }
.us-stat-n { font-family: var(--font-serif); font-weight: 900; font-size: 18px; color: var(--ink); line-height: 1; }
.us-stat-l { font-family: var(--font-mono); font-size: 8px; letter-spacing: 0.5px; color: var(--fg-3); text-transform: uppercase; margin-top: 4px; }

/* search (network mode) */
.kg-search { display: flex; align-items: center; gap: 8px; background: var(--bg); border: 1.5px solid var(--rule); border-radius: 10px; padding: 8px 11px; margin-bottom: 14px; }
.kg-search:focus-within { border-color: var(--gold); }
.kg-search input { flex: 1; border: 0; background: transparent; outline: none; font-family: var(--font-serif); font-size: 14px; color: var(--ink); direction: rtl; }
.kg-search .g { color: var(--gold); display: flex; }

/* cluster filter — shared component, drives BOTH engines */
.us-filter-label {
  display: flex; align-items: baseline; justify-content: space-between;
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 1px;
  text-transform: uppercase; color: var(--fg-3); margin-bottom: 9px;
}
.us-filter-label .all { color: var(--gold); cursor: pointer; }
.us-filter-label .all:hover { color: var(--gold-dark); }
.us-clusters { display: flex; flex-direction: column; gap: 2px; }
.us-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px; border-radius: 8px; cursor: pointer;
  transition: background 0.12s, opacity 0.12s; user-select: none;
}
.us-chip:hover { background: var(--bg); }
.us-chip.off { opacity: 0.34; }
.us-chip-dot { width: 11px; height: 11px; border-radius: 50%; flex-shrink: 0; box-shadow: 0 0 0 2px rgba(255,255,255,0.6); }
.us-chip-name { flex: 1; font-size: 13px; color: var(--fg-1); }
.us-chip-name .delta { font-family: var(--font-mono); font-size: 8.5px; color: var(--gold); letter-spacing: 0.5px; margin-inline-start: 5px; }
.us-chip-n { font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); }

.us-rail-foot { margin-top: 13px; padding-top: 11px; border-top: 1px dashed var(--rule); font-family: var(--font-mono); font-size: 9.5px; line-height: 1.6; color: var(--fg-3); }
.us-rail-foot b { color: var(--gold-dark); }

/* ── Bridge prompt (doctrine → network) ─────────────────────── */
.us-bridge {
  position: fixed; left: 24px; bottom: 24px; z-index: 50;
  max-width: 330px;
  background: var(--ink); color: var(--fg-on-dark);
  border: 1px solid rgba(217,184,92,0.34); border-radius: 14px;
  padding: 15px 16px; box-shadow: 0 18px 44px rgba(10,20,36,0.42);
  transform: translateY(14px); opacity: 0; pointer-events: none;
  transition: opacity 0.26s ease, transform 0.26s cubic-bezier(.2,1,.3,1);
}
.us-bridge.show { transform: translateY(0); opacity: 1; pointer-events: auto; }
.us-bridge-tag { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 1.4px; text-transform: uppercase; color: #d9b85c; margin-bottom: 7px; }
.us-bridge-t { font-family: var(--font-serif); font-weight: 700; font-size: 16px; line-height: 1.32; color: #faf7f0; margin-bottom: 13px; }
.us-bridge-t b { color: #d9b85c; }
.us-bridge-actions { display: flex; gap: 8px; }
.us-bridge-go, .us-bridge-dismiss {
  font-family: var(--font-sans); font-weight: 700; font-size: 12.5px;
  border-radius: 9px; padding: 9px 13px; cursor: pointer; border: 0;
}
.us-bridge-go { flex: 1; background: var(--gold); color: #1a1206; display: inline-flex; align-items: center; justify-content: center; gap: 7px; }
.us-bridge-go:hover { background: #d2ad44; }
.us-bridge-dismiss { background: rgba(250,247,240,0.08); color: var(--fg-on-dark); border: 1px solid rgba(250,247,240,0.18); }
.us-bridge-dismiss:hover { background: rgba(250,247,240,0.14); }

/* ── Bottom hint ────────────────────────────────────────────── */
.us-hint {
  position: fixed; left: 24px; bottom: 24px; z-index: 24;
  font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); line-height: 1.6;
  background: rgba(255,255,255,0.72); backdrop-filter: blur(6px);
  border: 1px solid var(--rule); border-radius: 9px; padding: 8px 12px;
}
.us-hint b { color: var(--fg-1); }
body.bridge-on .us-hint { opacity: 0; pointer-events: none; }

/* ════ Ported from graph/index.html — network detail / tip / zoom ════ */
.kg-detail { position: fixed; bottom: 24px; right: 24px; z-index: 26; width: 320px;
  background: #0a1424; color: var(--fg-on-dark); border: 1px solid rgba(217,184,92,0.3); border-radius: 16px;
  padding: 20px; box-shadow: 0 20px 50px rgba(10,20,36,0.5); transform: translateY(16px); opacity: 0; pointer-events: none;
  transition: opacity 0.24s ease, transform 0.24s ease; }
.kg-detail.show { transform: translateY(0); opacity: 1; pointer-events: auto; }
.kg-detail-kind { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1px; text-transform: uppercase; color: #d9b85c; margin-bottom: 10px; display: flex; justify-content: space-between; }
.kg-detail-ref { font-family: var(--font-mono); font-weight: 600; font-size: 15px; color: #fff; margin-bottom: 6px; }
.kg-detail-title { font-family: var(--font-serif); font-size: 18px; font-weight: 700; line-height: 1.3; color: var(--fg-on-dark); margin-bottom: 14px; }
.kg-detail-meta { display: flex; flex-wrap: wrap; gap: 6px 14px; font-family: var(--font-mono); font-size: 11px; color: rgba(250,247,240,0.62); margin-bottom: 16px; }
.kg-detail-meta b { color: #d9b85c; }
.kg-hold { font-family: var(--font-serif); font-style: italic; font-size: 13px; line-height: 1.5; color: rgba(250,247,240,0.82); border-inline-start: 2px solid #d9b85c; padding-inline-start: 10px; margin: 0 0 14px; }
.kg-detail-neigh { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; max-height: 96px; overflow-y: auto; }
.kg-detail-neigh:empty { display: none; }
.kg-neigh-chip { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 11px; color: rgba(250,247,240,0.86);
  background: rgba(250,247,240,0.07); border: 1px solid rgba(250,247,240,0.14); border-radius: 7px; padding: 5px 8px; cursor: pointer; transition: background 0.14s, border-color 0.14s; }
.kg-neigh-chip:hover { background: rgba(217,184,92,0.16); border-color: rgba(217,184,92,0.5); }
.kg-neigh-chip .cdot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.kg-neigh-label { flex: 0 0 100%; font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 1px; text-transform: uppercase; color: rgba(250,247,240,0.4); margin-bottom: 2px; }
.kg-neigh-label:empty { display: none; }
.kg-detail-links { display: flex; gap: 8px; }
.kg-detail-links a { flex: 1; text-align: center; text-decoration: none; font-family: var(--font-sans); font-size: 12.5px; font-weight: 700; padding: 9px; border-radius: 9px; }
.kg-detail-links .pri { background: var(--gold); color: #1a1206; }
.kg-detail-links .sec { background: rgba(250,247,240,0.08); color: var(--fg-on-dark); border: 1px solid rgba(250,247,240,0.18); }
.kg-detail-close { position: absolute; top: 14px; left: 14px; cursor: pointer; color: rgba(250,247,240,0.5); font-size: 16px; background: none; border: 0; }

.kg-tip { position: fixed; z-index: 28; pointer-events: none; background: #0a1424; color: var(--fg-on-dark);
  border: 1px solid rgba(217,184,92,0.35); border-radius: 9px; padding: 7px 11px; font-size: 12px; opacity: 0; transition: opacity 0.1s; max-width: 230px; }
.kg-tip .r { font-family: var(--font-mono); color: #d9b85c; font-weight: 600; font-size: 11px; }
.kg-tip .t { font-family: var(--font-serif); font-size: 13px; margin-top: 2px; }

.kg-zoom { position: fixed; bottom: 96px; left: 24px; z-index: 24; display: flex; flex-direction: column; gap: 4px; }
.kg-zoom button { width: 36px; height: 36px; border: 1px solid var(--rule); background: rgba(255,255,255,0.85); backdrop-filter: blur(6px);
  border-radius: 9px; cursor: pointer; font-size: 17px; color: var(--ink); display: grid; place-items: center; }
.kg-zoom button:hover { border-color: var(--gold); color: var(--gold); }

/* keep graph's own cluster rows in the DOM (graph.js wires them) but hidden */
#kg-clusters { display: none; }

/* ════ Unified detail panel (Phase 5) — one component, both modes ════ */
.us-detail {
  position: fixed; top: 76px; bottom: 24px; left: 24px;
  width: 366px; z-index: 60;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--rule); border-radius: 18px;
  box-shadow: var(--shadow-elev);
  padding: 26px 26px 22px; overflow-y: auto;
  transform: translateX(calc(-100% - 40px)); opacity: 0; pointer-events: none;
}
.us-detail.is-open { transform: translateX(0); opacity: 1; pointer-events: auto; }
.us-detail-accent { position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--gold); border-radius: 18px 18px 0 0; }
.us-detail-close {
  position: absolute; top: 14px; inset-inline-end: 14px; width: 28px; height: 28px;
  border: 0; background: transparent; border-radius: 7px; cursor: pointer;
  font-family: var(--font-mono); font-size: 19px; color: var(--fg-3); line-height: 1;
}
.us-detail-close:hover { color: var(--ink); background: var(--bg-hover); }
.us-detail-kind {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 1.3px; text-transform: uppercase;
  color: var(--gold); margin-bottom: 12px;
}
.us-detail-kind #usd-domain { color: var(--fg-3); }
.us-detail-ref { font-family: var(--font-mono); font-size: 13px; color: var(--fg-2); margin-bottom: 5px; direction: rtl; }
.us-detail-title { font-family: var(--font-serif); font-weight: 900; font-size: 27px; line-height: 1.18; letter-spacing: -0.6px; color: var(--ink); margin: 0 0 14px; text-wrap: pretty; }
.us-detail-rule { width: 46px; height: 2px; background: var(--gold); margin-bottom: 16px; }
.us-detail-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
.us-detail-meta:empty { display: none; }
.us-meta-it { background: var(--bg-canvas); border: 1px solid var(--rule); border-radius: 10px; padding: 10px 12px; }
.us-meta-it .l { display: block; font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.5px; text-transform: uppercase; color: var(--fg-3); margin-bottom: 4px; }
.us-meta-it .v { font-family: var(--font-serif); font-weight: 700; font-size: 16px; color: var(--ink); line-height: 1.2; }
.us-detail-hold { font-family: var(--font-serif); font-style: italic; font-size: 14.5px; line-height: 1.55; color: var(--ink-2); border-inline-start: 2.5px solid var(--gold); padding-inline-start: 12px; margin-bottom: 16px; }
.us-detail-hold:empty { display: none; }
.us-detail-section { margin-bottom: 16px; }
.us-detail-label { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--fg-3); margin-bottom: 9px; }
.us-detail-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.us-chip-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px; background: var(--bg-canvas); border: 1px solid var(--rule);
  border-radius: 999px; font-size: 12.5px; color: var(--ink-2); cursor: pointer; transition: all 0.14s;
}
.us-chip-pill:hover { border-color: var(--gold); color: var(--ink); }
.us-chip-pill .d { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.us-detail-actions { display: flex; flex-direction: column; gap: 8px; }
.us-act {
  display: block; text-align: center; text-decoration: none; cursor: pointer;
  font-family: var(--font-sans); font-weight: 700; font-size: 13.5px;
  padding: 11px 14px; border-radius: 10px; border: 0;
}
.us-act.pri { background: var(--ink); color: var(--fg-on-dark); }
.us-act.pri:hover { background: var(--ink-2); }
.us-act.ghost { background: var(--bg-canvas); color: var(--ink-2); border: 1px solid var(--rule); }
.us-act.ghost:hover { border-color: var(--gold); color: var(--ink); }
/* never let the renderers' legacy panels show — the shell owns one panel */
.atlas-detail, .kg-detail, .us-bridge { display: none !important; }

/* ════ Phase 2 — shared colour map on the atlas ════ */
/* class-level (no #id) so atlas hover/selected gold keeps winning */
.atlas-node-bg { stroke: var(--cl, var(--ink)); }
.atlas-cluster-bg { opacity: 0.07; }
.atlas-cluster-bg.is-active { opacity: 0.16; }
/* coverage-absent domains in the active mode */
.us-chip.absent .us-chip-n { opacity: 0.4; }
.us-chip.absent .us-chip-dot { box-shadow: 0 0 0 2px rgba(255,255,255,0.6); opacity: 0.55; }

@media (max-width: 760px) {
  .us-rail { width: 220px; right: 12px; }
  .kg-detail { width: calc(100% - 24px); right: 12px; }
  .us-top-meta { display: none; }
}