/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--void); color: var(--ink); font-family: var(--font-sans); font-size: 15px; line-height: 23px; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
img { display: block; }
.br-hud { font-family: var(--font-mono); font-size: 11px; line-height: 14px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); font-weight: 500; }
.br-mono { font-family: var(--font-mono); font-size: 13px; line-height: 16px; }
.br-muted { color: var(--ink-muted); }
.br-faint { color: var(--ink-faint); }
.br-h-title { font-family: var(--font-display); font-size: 32px; line-height: 38px; font-weight: 600; letter-spacing: -.01em; margin: 0; }
.br-h-heading { font-family: var(--font-display); font-size: 20px; line-height: 26px; font-weight: 600; margin: 0; }
.br-h-hero { font-family: var(--font-display); font-size: 56px; line-height: 60px; font-weight: 600; letter-spacing: -.02em; margin: 0; }
.br-stat { font-family: var(--font-mono); font-size: 40px; line-height: 44px; letter-spacing: -.02em; font-weight: 500; }
.c-cyan { color: var(--cyan); } .c-violet { color: var(--violet); } .c-magenta { color: var(--magenta); } .c-amber { color: var(--amber); } .c-ok { color: var(--ok); } .c-danger { color: var(--danger); }

/* space background: faint star field + nebula depth */
.br-space { position: relative; background:
  radial-gradient(1200px 700px at 70% 30%, rgba(46,230,255,0.05), transparent 60%),
  radial-gradient(900px 600px at 15% 85%, rgba(167,123,255,0.06), transparent 60%),
  var(--void); }
.br-space::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .55;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #cfe6ff 50%, transparent 51%),
    radial-gradient(1px 1px at 38% 72%, #cfe6ff 50%, transparent 51%),
    radial-gradient(1px 1px at 64% 12%, #ffffff 50%, transparent 51%),
    radial-gradient(1px 1px at 82% 58%, #cfe6ff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 22% 48%, #a9c8ff 50%, transparent 51%),
    radial-gradient(1px 1px at 92% 84%, #ffffff 50%, transparent 51%),
    radial-gradient(1px 1px at 52% 38%, #cfe6ff 50%, transparent 51%),
    radial-gradient(1px 1px at 6% 92%, #cfe6ff 50%, transparent 51%);
  background-size: 420px 380px; }

/* ---------- glass ---------- */
.br-glass { background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--panel); backdrop-filter: blur(var(--blur-glass)) saturate(140%); -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(140%); }
.br-glass.strong { background: var(--glass-strong); }
.br-glass.glow { box-shadow: var(--glow-cyan), var(--panel); }
.br-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }

/* ---------- buttons ---------- */
.br-btn { display: inline-flex; align-items: center; gap: var(--space-2); height: 36px; padding: 0 var(--space-4); border-radius: var(--radius-pill); border: 1px solid var(--line-strong); background: rgba(255,255,255,0.03); font-size: 13px; font-weight: 600; letter-spacing: .01em; transition: border-color .2s, background .2s, box-shadow .2s; white-space: nowrap; }
.br-btn:hover { border-color: var(--cyan); background: var(--cyan-soft); }
.br-btn.primary { background: var(--cyan); color: var(--on-accent); border-color: transparent; box-shadow: 0 0 24px rgba(46,230,255,0.35); }
.br-btn.primary:hover { box-shadow: 0 0 34px rgba(46,230,255,0.55); }
.br-btn.ghost { border-color: transparent; background: transparent; color: var(--ink-muted); }
.br-btn.ghost:hover { color: var(--ink); background: var(--surface-raised); }
.br-btn.danger { color: var(--danger); border-color: rgba(255,122,138,0.35); }
.br-btn.danger:hover { background: rgba(255,122,138,0.12); border-color: var(--danger); }
.br-btn.sm { height: 28px; padding: 0 var(--space-3); font-size: 12px; }
.br-btn.icon { width: 36px; padding: 0; justify-content: center; }
.br-btn svg { width: 16px; height: 16px; flex: none; }

/* ---------- chips & segmented ---------- */
.br-chip { display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 12px; border-radius: var(--radius-pill); border: 1px solid var(--line); background: rgba(255,255,255,0.02); font-size: 13px; font-weight: 600; color: var(--ink-muted); transition: all .2s; white-space: nowrap; }
.br-chip:hover { border-color: var(--line-strong); color: var(--ink); }
.br-chip .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.br-chip.on { color: var(--ink); border-color: var(--line-strong); background: var(--surface-raised); }
.br-chip.on.cyan { color: var(--cyan); background: var(--cyan-soft); border-color: rgba(46,230,255,0.4); }
.br-chip.on.violet { color: var(--violet); background: var(--violet-soft); border-color: rgba(167,123,255,0.4); }
.br-chip.on.magenta { color: var(--magenta); background: var(--magenta-soft); border-color: rgba(255,95,216,0.4); }
.br-chip.on.amber { color: var(--amber); background: var(--amber-soft); border-color: rgba(255,195,92,0.4); }
.br-chip.off .dot { opacity: .35; box-shadow: none; }
.br-seg { display: inline-flex; padding: 3px; gap: 2px; border-radius: var(--radius-pill); background: var(--surface-raised); border: 1px solid var(--line); }
.br-seg button { border: 0; background: transparent; height: 26px; padding: 0 12px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 600; color: var(--ink-muted); }
.br-seg button.on { background: var(--ink); color: var(--void); }

/* ---------- app shell ---------- */
.br-app { position: relative; display: flex; width: 100%; height: 100%; min-height: 100%; overflow: hidden; }
.br-sidebar { position: relative; z-index: 5; width: var(--sidebar-w); flex: none; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 18px 0; border-right: 1px solid var(--line); background: rgba(6,8,15,0.7); backdrop-filter: blur(var(--blur-glass)); }
.br-logo { width: 40px; height: 40px; margin-bottom: 18px; display: grid; place-items: center; }
.br-nav { position: relative; width: 44px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-md); color: var(--ink-faint); border: 1px solid transparent; transition: all .2s; background: none; }
.br-nav svg { width: 22px; height: 22px; }
.br-nav:hover { color: var(--ink); background: var(--surface-raised); }
.br-nav.on { color: var(--cyan); background: var(--cyan-soft); border-color: rgba(46,230,255,0.35); box-shadow: 0 0 18px rgba(46,230,255,0.2); }
.br-nav.on::before { content: ""; position: absolute; left: -14px; top: 12px; bottom: 12px; width: 3px; border-radius: 3px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.br-nav .tip { position: absolute; left: 54px; top: 50%; transform: translateY(-50%); padding: 4px 10px; border-radius: var(--radius-sm); background: var(--surface-raised); border: 1px solid var(--line); color: var(--ink); font-size: 12px; font-weight: 600; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .15s; }
.br-nav:hover .tip { opacity: 1; }
.br-nav-spacer { flex: 1; }
.br-main { position: relative; flex: 1; min-width: 0; display: flex; flex-direction: column; }
.br-topbar { position: relative; z-index: 4; height: 68px; flex: none; display: flex; align-items: center; gap: var(--space-4); padding: 0 var(--space-6); }
.br-topbar .crumb { display: flex; flex-direction: column; gap: 2px; }
.br-topbar .crumb b { font-family: var(--font-display); font-size: 20px; line-height: 24px; font-weight: 600; }
.br-topbar .grow { flex: 1; }
.br-search { display: flex; align-items: center; gap: 8px; width: 280px; height: 38px; padding: 0 14px; border-radius: var(--radius-pill); background: var(--surface-raised); border: 1px solid var(--line); color: var(--ink-faint); font-size: 13px; }
.br-search svg { width: 16px; height: 16px; }
.br-search kbd { margin-left: auto; font-family: var(--font-mono); font-size: 11px; padding: 1px 6px; border-radius: 5px; border: 1px solid var(--line-strong); color: var(--ink-muted); }
.br-me { display: flex; align-items: center; gap: 10px; padding: 4px 14px 4px 4px; border-radius: var(--radius-pill); border: 1px solid var(--line); background: var(--glass); }
.br-me .meta { display: flex; flex-direction: column; line-height: 15px; }
.br-me .meta b { font-size: 13px; }
.br-me .meta span { font-size: 11px; color: var(--ok); display: flex; align-items: center; gap: 5px; }
.br-me .meta span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 6px var(--ok); }
.br-content { position: relative; flex: 1; min-height: 0; }

/* ---------- avatar ---------- */
.br-av { position: relative; flex: none; width: 36px; height: 36px; border-radius: 50%; overflow: visible; }
.br-av img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.br-av::after { content: ""; position: absolute; inset: -3px; border-radius: 50%; border: 2px solid var(--ring, var(--cyan)); box-shadow: 0 0 12px var(--ring, var(--cyan)); opacity: .9; }
.br-av.sm { width: 26px; height: 26px; } .br-av.sm::after { inset: -2px; border-width: 1.5px; }
.br-av.lg { width: 112px; height: 112px; } .br-av.lg::after { inset: -6px; border-width: 2px; }
.br-av.luca { --ring: var(--person-luca); } .br-av.arthur { --ring: var(--person-arthur); } .br-av.konstantin { --ring: var(--person-konstantin); }
.br-stack { display: flex; } .br-stack .br-av + .br-av { margin-left: -6px; }

/* ---------- media ---------- */
.br-media { position: relative; border-radius: var(--radius-md); overflow: hidden; background: var(--surface-raised); border: 1px solid var(--line); }
.br-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.br-media:hover img { transform: scale(1.04); }
.br-media .cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 12px 10px; background: linear-gradient(transparent, rgba(4,5,10,0.85)); font-size: 12px; line-height: 16px; }
.br-media .cap b { display: block; font-size: 13px; }
.br-media .badge { position: absolute; top: 8px; right: 8px; display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; border-radius: var(--radius-pill); background: rgba(4,5,10,0.7); font-family: var(--font-mono); font-size: 11px; backdrop-filter: blur(8px); }
.br-media .badge svg { width: 12px; height: 12px; }
.br-media .play { position: absolute; inset: 0; margin: auto; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: rgba(4,5,10,0.55); border: 1px solid rgba(255,255,255,0.4); backdrop-filter: blur(6px); }
.br-media .play svg { width: 18px; height: 18px; margin-left: 2px; }
.br-media .face { position: absolute; border: 1.5px solid var(--cyan); border-radius: 6px; box-shadow: 0 0 10px rgba(46,230,255,0.5); }
.br-media .face span { position: absolute; top: -20px; left: -1px; padding: 1px 6px; border-radius: 4px; background: var(--cyan); color: var(--on-accent); font-size: 10px; font-weight: 700; white-space: nowrap; }
.br-grid { display: grid; gap: var(--space-2); }

/* ---------- ask bar ---------- */
.br-ask { display: flex; align-items: center; gap: 10px; height: 60px; padding: 0 8px 0 18px; border-radius: var(--radius-lg); background: var(--glass-strong); border: 1px solid var(--line-strong); box-shadow: var(--panel); backdrop-filter: blur(var(--blur-glass)); transition: box-shadow .3s, border-color .3s; }
.br-ask:focus-within, .br-ask.thinking { border-color: rgba(46,230,255,0.6); box-shadow: var(--glow-cyan), var(--panel); }
.br-ask .orb { width: 26px; height: 26px; flex: none; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #bff8ff, var(--cyan) 40%, rgba(167,123,255,0.8) 75%, transparent 76%); box-shadow: 0 0 16px rgba(46,230,255,0.6); animation: br-breathe 3.2s ease-in-out infinite; }
.br-ask.thinking .orb { animation-duration: .9s; }
.br-ask input { flex: 1; min-width: 0; height: 100%; border: 0; outline: 0; background: transparent; font-size: 15px; }
.br-ask input::placeholder { color: var(--ink-faint); }
.br-ask .send { width: 44px; height: 44px; border-radius: 15px; border: 0; display: grid; place-items: center; background: var(--cyan); color: var(--on-accent); }
.br-ask .send svg, .br-ask .mic svg { width: 18px; height: 18px; }
.br-ask .mic { width: 40px; height: 40px; border-radius: 12px; border: 0; display: grid; place-items: center; background: transparent; color: var(--ink-muted); }
.br-ask .mic:hover { color: var(--ink); background: var(--surface-raised); }
@keyframes br-breathe { 0%,100% { transform: scale(.9); opacity: .85; } 50% { transform: scale(1.05); opacity: 1; } }

/* ---------- neural graph ---------- */
.br-graph { display: block; width: 100%; height: 100%; cursor: grab; user-select: none; }
.br-graph.dragging { cursor: grabbing; }
.br-graph .edge { stroke: var(--line-strong); stroke-width: 1; transition: stroke .3s, opacity .3s, stroke-width .3s; }
.br-graph .decor line { stroke: rgba(150,180,255,0.07); stroke-width: .8; }
.br-graph .decor circle { fill: rgba(170,200,255,0.35); }
.br-graph .node { cursor: pointer; transition: opacity .3s; }
.br-graph .node .halo { opacity: .18; transform-box: fill-box; transform-origin: center; animation: br-pulse 3.6s ease-in-out infinite; }
.br-graph .node .ring { fill: none; stroke-width: 2; }
.br-graph .node .core { stroke-width: 1.5; }
.br-graph .node text { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; fill: var(--ink-muted); text-anchor: middle; pointer-events: none; text-transform: uppercase; }
.br-graph .node.person text { font-family: var(--font-display); font-size: 14px; letter-spacing: 0; text-transform: none; fill: var(--ink); font-weight: 600; }
.br-graph .person .ring, .br-graph .person .halo { stroke: var(--node-person); fill: var(--node-person); } .br-graph .person .ring { fill: none; }
.br-graph .event .ring, .br-graph .event .halo { stroke: var(--node-event); fill: var(--node-event); } .br-graph .event .ring { fill: none; }
.br-graph .place .core { fill: var(--space); stroke: var(--node-place); } .br-graph .place .halo { fill: var(--node-place); }
.br-graph .insider .core { fill: var(--space); stroke: var(--node-insider); } .br-graph .insider .halo { fill: var(--node-insider); }
.br-graph .place .glyph { fill: var(--node-place); } .br-graph .insider .glyph { fill: var(--node-insider); }
.br-graph .pulse { filter: url(#br-glow); }
.br-graph .pulse.person { fill: var(--node-person); } .br-graph .pulse.event { fill: var(--node-event); } .br-graph .pulse.place { fill: var(--node-place); } .br-graph .pulse.insider { fill: var(--node-insider); }
.br-graph.has-focus .node:not(.lit) { opacity: .16; }
.br-graph.has-focus .edge:not(.lit) { opacity: .08; }
.br-graph .edge.lit { stroke: var(--cyan); stroke-width: 1.6; opacity: 1; }
.br-graph .node.lit .halo { opacity: .45; }
.br-graph .node.hot .halo { opacity: .7; animation-duration: .8s; }
.br-graph .node.hot text { fill: var(--ink); }
.br-graph .node.hidden, .br-graph .edge.hidden { display: none; }
@keyframes br-pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.18); } }

/* ---------- misc components ---------- */
.br-stat-tile { padding: var(--space-5); border-radius: var(--radius-lg); background: var(--glass); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; }
.br-bar { height: 6px; border-radius: 6px; background: var(--surface-raised); overflow: hidden; }
.br-bar > i { display: block; height: 100%; border-radius: 6px; background: var(--cyan); box-shadow: 0 0 10px currentColor; }
.br-switch { position: relative; width: 40px; height: 22px; flex: none; border-radius: 22px; background: var(--surface-raised); border: 1px solid var(--line-strong); transition: all .2s; }
.br-switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: var(--ink-muted); transition: all .2s; }
.br-switch.on { background: var(--cyan-soft); border-color: var(--cyan); }
.br-switch.on::after { left: 20px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.br-scroll { overflow: auto; scrollbar-width: thin; scrollbar-color: rgba(150,180,255,0.2) transparent; }
.br-eyebrow { display: flex; align-items: center; gap: 8px; }
.br-eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.br-tag { display: inline-flex; align-items: center; gap: 5px; padding: 2px 8px; border-radius: var(--radius-pill); font-size: 11px; font-weight: 700; letter-spacing: .02em; }
.br-tag.cyan { background: var(--cyan-soft); color: var(--cyan); } .br-tag.violet { background: var(--violet-soft); color: var(--violet); } .br-tag.magenta { background: var(--magenta-soft); color: var(--magenta); } .br-tag.amber { background: var(--amber-soft); color: var(--amber); }
.br-tag svg { width: 12px; height: 12px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }