*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #02010a;
  --bg2:     #06040f;
  --bg3:     #0d0a1a;
  --bg4:     #131025;
  --glass:   rgba(6, 4, 18, 0.88);
  --glass2:  rgba(8, 5, 22, 0.82);
  --glass3:  rgba(255,255,255,0.015);
  --border:  rgba(255,255,255,0.06);
  --border2: rgba(255,255,255,0.10);
  --border-hi: rgba(192,132,252,0.35);
  --text:    #f0eeff;
  --text2:   #c8c0e8;
  --dim:     #3d3558;
  --dim2:    #8878aa;
  --mono:    'JetBrains Mono', monospace;
  --sans:    'Inter', sans-serif;
  --display: 'Rajdhani', 'Inter', sans-serif;
  /* Accent palette — matches cluster colors */
  --accent:  #c084fc;
  --accent2: #f472b6;
  --cyan:    #22d3ee;
  --pink:    #fb7185;
  --green:   #4ade80;
  --amber:   #fbbf24;
  --purple:  #a78bfa;
  --orange:  #fb923c;
  --blur:    blur(28px) saturate(200%);
  --blur-sm: blur(14px) saturate(160%);
  --r:       10px;
  --r-sm:    6px;
  --r-lg:    16px;
  --shadow:  0 4px 20px rgba(0,0,0,0.65), 0 1px 4px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.8), 0 2px 12px rgba(0,0,0,0.6);
  --glow-accent: 0 0 20px rgba(192,132,252,0.2);
}

html, body {
  height: 100%; overflow: hidden;
  background: var(--bg); color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */
#app { display: flex; flex-direction: column; height: 100vh; }

/* ── Topbar ── */
#topbar {
  display: flex; align-items: center; gap: 16px; padding: 0 20px;
  height: 50px;
  background: var(--glass2);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(192,132,252,0.07), 0 4px 28px rgba(0,0,0,0.6);
  flex-shrink: 0; z-index: 10;
}
/* Left accent line */
#topbar::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  opacity: 0.6;
}
#project-info { flex: 1; display: flex; flex-direction: column; justify-content: center; min-width: 0; }
#project-name {
  font-family: var(--display); font-size: 14px; font-weight: 700;
  color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  letter-spacing: 1px; text-transform: uppercase;
}
#project-path {
  font-family: var(--mono); font-size: 10px; color: var(--dim2);
  margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ── Search ── */
#search-wrap { position: relative; flex-shrink: 0; }
#search-input {
  background: rgba(192,132,252,0.04);
  border: 1px solid var(--border2); border-radius: var(--r);
  color: var(--text); font-family: var(--mono); font-size: 12px;
  padding: 7px 34px 7px 13px; width: 210px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, width 0.25s, background 0.2s;
  letter-spacing: 0.2px;
}
#search-input:focus {
  border-color: var(--border-hi);
  box-shadow: 0 0 0 3px rgba(192,132,252,0.08), inset 0 1px 0 rgba(192,132,252,0.05);
  width: 270px; background: rgba(192,132,252,0.03);
}
#search-input::placeholder { color: var(--dim); }
#search-input:disabled { opacity: 0.3; }
#search-badge {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 11px; pointer-events: none; color: var(--dim);
  transition: color 0.2s;
}
#search-badge.has-match { color: var(--accent); }
#search-badge.no-match  { color: var(--pink); }

#topbar-status {
  font-family: var(--display); font-size: 11px; color: var(--dim2);
  flex-shrink: 0; letter-spacing: 2.5px; text-transform: uppercase;
  padding: 4px 12px; border-radius: var(--r-sm);
  background: rgba(255,255,255,0.025); border: 1px solid var(--border);
  transition: all 0.3s;
}
#topbar-status.ready {
  color: var(--green); background: rgba(74,222,128,0.07);
  border-color: rgba(74,222,128,0.2); box-shadow: 0 0 14px rgba(74,222,128,0.1);
}
#topbar-status.error {
  color: var(--pink); background: rgba(251,113,133,0.07); border-color: rgba(251,113,133,0.2);
}

/* ── Main ── */
#main { flex: 1; display: flex; overflow: hidden; position: relative; }

/* ── Graph wrap ── */
#graph-wrap { flex: 1; position: relative; overflow: hidden; background: var(--bg); }
#graph-svg  { width: 100%; height: 100%; display: block; background: transparent; }

/* Subtle radial vignette + dot grid */
#graph-wrap::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 70% 65% at 50% 50%, rgba(192,132,252,0.03) 0%, transparent 70%),
    radial-gradient(rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 100% 100%, 26px 26px;
}

/* ── Controls ── */
#controls {
  position: absolute; top: 14px; right: 14px; z-index: 5;
  display: flex; flex-direction: column; gap: 2px;
  background: var(--glass); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--border2); border-radius: var(--r);
  padding: 5px; box-shadow: var(--shadow);
}
.ctrl-btn {
  width: 30px; height: 30px; border: 1px solid transparent; border-radius: var(--r-sm);
  background: transparent; color: var(--dim2); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 16px; line-height: 1;
  transition: all 0.15s cubic-bezier(0.4,0,0.2,1);
}
.ctrl-btn:hover {
  background: rgba(192,132,252,0.1); color: var(--accent);
  border-color: rgba(192,132,252,0.25);
  box-shadow: 0 0 12px rgba(192,132,252,0.15); transform: translateY(-1px);
}
.ctrl-btn:active { transform: translateY(0); }
.ctrl-btn.active { color: var(--accent); border-color: rgba(192,132,252,0.3); background: rgba(192,132,252,0.08); }
.ctrl-sep { height: 1px; background: var(--border); margin: 2px 0; }

/* ── Legend ── */
#legend {
  position: absolute; top: 14px; right: 58px; z-index: 5;
  background: var(--glass); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--border2); border-radius: var(--r-lg);
  padding: 16px 18px; min-width: 210px; box-shadow: var(--shadow-lg);
}
#legend.hidden { display: none; }
.legend-title {
  font-family: var(--display); font-size: 10px; font-weight: 700;
  letter-spacing: 3px; color: var(--accent); margin-bottom: 14px; text-transform: uppercase;
}
.legend-section { margin-bottom: 14px; }
.legend-section:last-child { margin-bottom: 0; }
.legend-label {
  font-family: var(--mono); font-size: 9px; letter-spacing: 2px;
  color: var(--dim2); text-transform: uppercase; margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px;
}
.legend-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.legend-row { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 11px; color: var(--dim2); margin-bottom: 6px; }
.legend-row:last-child { margin-bottom: 0; }
.legend-swatch { flex-shrink: 0; }
.legend-footer {
  font-family: var(--mono); font-size: 10px; color: var(--dim);
  border-top: 1px solid var(--border); padding-top: 10px; margin-top: 6px; line-height: 1.8;
}

/* ── Back button ── */
#back-btn {
  position: absolute; top: 14px; left: 14px; z-index: 5;
  background: var(--glass); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--border2); border-radius: 20px;
  color: var(--accent); font-family: var(--display); font-size: 12px;
  font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase;
  padding: 7px 18px; cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
  opacity: 0; pointer-events: none; box-shadow: var(--shadow);
}
#back-btn:hover {
  background: rgba(192,132,252,0.1); border-color: var(--border-hi);
  box-shadow: var(--glow-accent), var(--shadow); transform: translateY(-1px);
}
#back-btn:active { transform: translateY(0); }
#back-btn.visible { opacity: 1; pointer-events: auto; }

/* ── Loading overlay ── */
#overlay {
  position: absolute; inset: 0;
  background: rgba(2,1,10,0.75);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  z-index: 20;
}
#overlay.hidden { display: none; }
.overlay-card {
  background: var(--glass2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid rgba(192,132,252,0.15); border-radius: var(--r-lg);
  padding: 36px 44px; min-width: 300px;
  display: flex; flex-direction: column; align-items: center;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(192,132,252,0.06);
}
.spinner {
  width: 34px; height: 34px;
  border: 1.5px solid rgba(192,132,252,0.12); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.9s linear infinite; margin-bottom: 24px;
  box-shadow: 0 0 18px rgba(192,132,252,0.25);
}
@keyframes spin { to { transform: rotate(360deg); } }
#overlay-title {
  font-family: var(--display); font-size: 13px; font-weight: 700;
  color: var(--accent); letter-spacing: 5px; text-transform: uppercase;
  margin-bottom: 24px; text-shadow: 0 0 24px rgba(192,132,252,0.5);
}
#overlay-steps { display: flex; flex-direction: column; gap: 10px; width: 100%; }
.step {
  font-family: var(--mono); font-size: 11px; color: var(--dim);
  display: flex; align-items: center; gap: 10px; transition: color 0.35s, opacity 0.35s;
}
.step-icon { width: 12px; flex-shrink: 0; text-align: center; transition: color 0.35s; }
.step.active .step-icon { color: var(--accent); }
.step.active { color: var(--text2); }
.step.done .step-icon { color: var(--green); }
.step.done { color: var(--dim); opacity: 0.5; }
#overlay-sub { font-family: var(--mono); font-size: 10px; color: var(--dim); margin-top: 18px; letter-spacing: 0.5px; }

/* ── Error ── */
#error-box {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 40px;
  background: rgba(2,1,10,0.6); backdrop-filter: blur(6px);
}
#error-box.hidden { display: none; }
#error-title {
  font-family: var(--display); font-size: 15px; font-weight: 700;
  color: var(--pink); letter-spacing: 3px; text-transform: uppercase;
  margin-bottom: 14px; text-shadow: 0 0 24px rgba(251,113,133,0.45);
}
#error-msg {
  font-family: var(--mono); font-size: 12px; color: var(--dim2); max-width: 560px;
  text-align: center; line-height: 1.7; white-space: pre-wrap;
  background: var(--glass); backdrop-filter: var(--blur);
  border: 1px solid rgba(251,113,133,0.15); border-radius: var(--r); padding: 16px 20px;
}

/* ── Sidebar reopen button ── */
#open-sidebar-btn {
  display: none;
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  z-index: 20;
  background: var(--glass2);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--border2); border-radius: var(--r);
  color: var(--dim2); cursor: pointer; font-family: var(--display);
  font-weight: 600; font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase;
  padding: 10px 12px; box-shadow: var(--shadow);
  transition: all 0.18s;
  writing-mode: vertical-rl; text-orientation: mixed;
}
#open-sidebar-btn:hover {
  color: var(--accent); border-color: var(--border-hi);
  background: rgba(192,132,252,0.07);
  box-shadow: var(--shadow), 0 0 14px rgba(192,132,252,0.14);
}
#open-sidebar-btn.visible { display: flex; align-items: center; gap: 6px; }

/* ── Sidebar ── */
#sidebar {
  width: 330px; flex-shrink: 0;
  position: relative; z-index: 1;
  background: var(--glass2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1), width 0.25s cubic-bezier(0.4,0,0.2,1);
  box-shadow: -6px 0 36px rgba(0,0,0,0.55);
}
#sidebar.hidden { transform: translateX(330px); width: 0; }

#sidebar-header {
  padding: 16px 16px 13px; border-bottom: 1px solid var(--border); flex-shrink: 0;
  background: linear-gradient(145deg, rgba(192,132,252,0.06) 0%, rgba(244,114,182,0.03) 50%, transparent 100%);
  position: relative;
}
/* Top accent line on sidebar header */
#sidebar-header::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), var(--accent2), transparent);
  opacity: 0.5;
}
#sidebar-name {
  font-family: var(--display); font-size: 15px; font-weight: 700;
  color: var(--accent); word-break: break-all; padding-right: 28px;
  letter-spacing: 0.5px; text-shadow: 0 0 20px rgba(192,132,252,0.3);
}
#sidebar-meta { font-size: 10px; color: var(--dim2); margin-top: 5px; font-family: var(--mono); line-height: 1.5; }
#sidebar-close {
  position: absolute; right: 12px; top: 14px;
  width: 22px; height: 22px; border: 1px solid var(--border2); border-radius: 6px;
  background: rgba(255,255,255,0.025); color: var(--dim); cursor: pointer; font-size: 10px;
  display: flex; align-items: center; justify-content: center; transition: all 0.15s;
}
#sidebar-close:hover {
  color: var(--accent2); border-color: rgba(244,114,182,0.3);
  background: rgba(244,114,182,0.07); box-shadow: 0 0 8px rgba(244,114,182,0.12);
}

#sidebar-body {
  flex: 1; overflow-y: auto; padding: 14px 16px;
  scrollbar-width: thin; scrollbar-color: rgba(192,132,252,0.12) transparent;
}
#sidebar-body::-webkit-scrollbar { width: 3px; }
#sidebar-body::-webkit-scrollbar-track { background: transparent; }
#sidebar-body::-webkit-scrollbar-thumb { background: rgba(192,132,252,0.14); border-radius: 3px; }

.section { margin-bottom: 18px; }
.section-title {
  font-family: var(--display); font-size: 10px; font-weight: 700;
  letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--dim2); margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

#sidebar-body.cluster-mode .node-only   { display: none; }
#sidebar-body.node-mode    .cluster-only { display: none; }

/* Explain box */
#explain-box {
  background: rgba(192,132,252,0.03);
  border: 1px solid var(--border); border-radius: var(--r);
  padding: 12px 14px; font-size: 12px; line-height: 1.7; min-height: 56px; color: var(--text2);
  transition: border-color 0.3s;
}
#explain-box:not(.loading) { border-color: rgba(192,132,252,0.12); }
#explain-box.loading { color: var(--dim); font-style: italic; }
#explain-role { font-size: 10px; color: var(--accent2); margin-top: 8px; font-style: italic; font-family: var(--mono); opacity: 0.85; }

/* Source preview */
#source-preview {
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--border); border-radius: var(--r);
  padding: 10px 12px; font-family: var(--mono); font-size: 10.5px; line-height: 1.65;
  color: #7a7a9a; max-height: 180px; overflow: auto; white-space: pre; tab-size: 4;
  scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.06) transparent;
}
#source-preview::-webkit-scrollbar { width: 3px; height: 3px; }
#source-preview::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.06); border-radius: 2px; }

/* Dep lists */
.dep-list { list-style: none; }
.dep-item {
  font-family: var(--mono); font-size: 11.5px; color: var(--text2);
  display: flex; align-items: center; gap: 7px;
  border-radius: var(--r-sm); padding: 5px 8px; margin: 0 -8px;
  transition: background 0.15s, transform 0.12s;
}
.dep-item.nav { cursor: pointer; }
.dep-item.nav:hover { background: rgba(192,132,252,0.06); transform: translateX(2px); }
.dep-item.nav:hover .dep-arrow { color: var(--accent); }
.dep-arrow { color: var(--dim); flex-shrink: 0; font-size: 10px; }
.dep-name  { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dep-badge {
  font-size: 9px; color: var(--dim2); margin-left: auto; flex-shrink: 0;
  padding: 2px 6px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); border-radius: 4px; white-space: nowrap;
}

/* Similar items */
.similar-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 8px; margin: 0 -8px; border-radius: var(--r-sm);
  cursor: pointer; transition: background 0.15s, transform 0.12s;
}
.similar-item:hover { background: rgba(192,132,252,0.05); transform: translateX(2px); }
.similar-name  { font-family: var(--mono); font-size: 11.5px; color: var(--text2); }
.similar-score {
  font-family: var(--mono); font-size: 10px; color: var(--green);
  background: rgba(74,222,128,0.07); border: 1px solid rgba(74,222,128,0.15);
  padding: 2px 7px; border-radius: 4px;
}

/* Cluster edge list */
.cluster-edge-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 8px; margin: 0 -8px; border-radius: var(--r-sm);
  cursor: pointer; transition: background 0.15s, transform 0.12s;
}
.cluster-edge-item:hover { background: rgba(192,132,252,0.05); transform: translateX(2px); }
.cluster-edge-name  { font-family: var(--mono); font-size: 11.5px; color: var(--text2); display: flex; align-items: center; gap: 7px; }
.cluster-edge-dot   { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.cluster-edge-count {
  font-family: var(--mono); font-size: 10px; color: var(--amber);
  background: rgba(251,191,36,0.08); border: 1px solid rgba(251,191,36,0.15);
  padding: 2px 7px; border-radius: 4px; min-width: 28px; text-align: center;
}

#risk-box {
  background: rgba(251,113,133,0.05);
  border: 1px solid rgba(251,113,133,0.18); border-radius: var(--r);
  padding: 10px 13px; font-size: 12px; color: var(--pink); line-height: 1.65;
}

/* ── Stats bar ── */
#statsbar {
  padding: 6px 20px;
  background: var(--glass2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border-top: 1px solid var(--border);
  box-shadow: 0 -1px 0 rgba(192,132,252,0.05);
  font-family: var(--mono); font-size: 11px; color: var(--dim);
  display: flex; gap: 20px; align-items: center; flex-shrink: 0; flex-wrap: wrap;
}
.stat-hi  { color: var(--accent); font-weight: 600; }
.stat-gpu { color: var(--green); }

/* ── Tooltip ── */
#tooltip {
  position: fixed;
  background: var(--glass); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid rgba(192,132,252,0.2); border-radius: var(--r);
  padding: 10px 14px; pointer-events: none;
  font-family: var(--mono); font-size: 12px; z-index: 100;
  max-width: 300px; box-shadow: var(--shadow-lg), 0 0 20px rgba(192,132,252,0.08);
  display: none;
}
.tt-name { font-weight: 700; color: var(--accent); margin-bottom: 4px; }
.tt-sub  { color: var(--dim2); font-size: 10.5px; word-break: break-all; line-height: 1.6; }

/* ── D3 nodes/edges ── */
.node circle, .node rect, .node polygon, .node path, .node line { cursor: pointer; }
.node text { pointer-events: none; font-family: var(--mono); dominant-baseline: middle; }
.node text.node-label { fill: rgba(200,192,232,0.85); }

.link { fill: none; opacity: 0.28; pointer-events: none; }
.link.calls    { stroke-dasharray: 5 3; }
.link.inherits { stroke-width: 2.5; opacity: 0.5; }
.link.highlighted { opacity: 0.9 !important; }
.link.dimmed      { opacity: 0.025 !important; }

.node.dimmed circle, .node.dimmed rect, .node.dimmed polygon,
.node.dimmed path,   .node.dimmed line  { opacity: 0.06 !important; }
.node.dimmed text { opacity: 0.06 !important; }

.node.dimmed-soft circle, .node.dimmed-soft rect, .node.dimmed-soft polygon,
.node.dimmed-soft path,   .node.dimmed-soft line  { opacity: 0.2 !important; }
.node.dimmed-soft text { opacity: 0.2 !important; }

.node.search-dim circle, .node.search-dim rect, .node.search-dim polygon { opacity: 0.07 !important; }
.node.search-dim text { opacity: 0.07 !important; }
.node.search-match > circle, .node.search-match > rect, .node.search-match > polygon {
  stroke: var(--amber) !important; stroke-width: 2.5px !important;
}

.node.blast circle, .node.blast rect, .node.blast polygon {
  stroke: var(--orange) !important; stroke-width: 2px !important;
  filter: drop-shadow(0 0 6px rgba(251,146,60,0.7));
}
.node.selected circle, .node.selected rect, .node.selected polygon {
  stroke-width: 2.5px !important; filter: brightness(1.4) drop-shadow(0 0 8px currentColor);
}

/* Fast mode: skip expensive filters */
.node.fast.blast circle, .node.fast.blast rect, .node.fast.blast polygon,
.node.fast.blast path { filter: none !important; }
.node.fast.selected circle, .node.fast.selected rect, .node.fast.selected polygon,
.node.fast.selected path { filter: none !important; }

/* ── Cluster blobs ── */
.cluster-blob { cursor: pointer; }
.cluster-blob .halo, .cluster-blob .blob-dots path, .cluster-blob .bleed-layer path { pointer-events: none; }
.cluster-blob .cluster-label, .cluster-blob .cluster-count {
  pointer-events: none; text-anchor: middle;
  font-family: 'Rajdhani', var(--mono);
  paint-order: stroke; stroke: rgba(2,1,10,0.9); stroke-width: 4;
}
.cluster-blob .cluster-label { font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.cluster-blob .cluster-count { fill: var(--dim2); font-family: var(--mono); letter-spacing: 0; font-size: 9.5px; }
.cluster-link { fill: none; pointer-events: none; }



/* ── Live animation ── */
#particle-flow-layer path { pointer-events: none; }

/* ── Guide hints ── */
.hint {
  position: fixed;
  z-index: 8000;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--fg);
  background: var(--bg2);
  border: 1px solid rgba(0, 240, 255, 0.35);
  border-top: 2px solid #00f0ff;
  border-radius: 8px;
  padding: 14px 20px;
  max-width: 290px;
  line-height: 1.6;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease, transform 0.35s ease;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.12);
}
.hint::before {
  content: '// ';
  color: #00f0ff;
}
.hint.visible { opacity: 1; }
.hint.fade-out { opacity: 0; }

/* All hints anchored to center of viewport */
#hint-1 {
  bottom: 130px; left: 50%;
  transform: translateX(-50%) translateY(8px);
}
#hint-1.visible { transform: translateX(-50%) translateY(0); }
#hint-1.fade-out { transform: translateX(-50%) translateY(-6px); }

#hint-2 {
  top: 50%; left: 50%;
  transform: translate(-50%, calc(-50% + 8px));
}
#hint-2.visible { transform: translate(-50%, -50%); }
#hint-2.fade-out { transform: translate(-50%, calc(-50% - 6px)); }

#hint-3 {
  bottom: 130px; left: 50%;
  transform: translateX(-50%) translateY(8px);
}
#hint-3.visible { transform: translateX(-50%) translateY(0); }
#hint-3.fade-out { transform: translateX(-50%) translateY(-6px); }

#hint-4 {
  top: 50%; left: 50%;
  transform: translate(-50%, calc(-50% + 8px));
}
#hint-4.visible { transform: translate(-50%, -50%); }
#hint-4.fade-out { transform: translate(-50%, calc(-50% - 6px)); }

/* ── Demo notice ── */
#demo-notice {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  background: rgba(2, 1, 10, 0.7);
  backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
#demo-notice.visible { opacity: 1; pointer-events: all; }
#demo-notice-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  border-radius: 10px;
  padding: 32px 36px;
  max-width: 420px;
  text-align: center;
}
#demo-notice-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 4px;
  margin-bottom: 16px;
}
#demo-notice-text {
  font-size: 14px;
  color: var(--fg2);
  line-height: 1.6;
  margin-bottom: 24px;
}
#demo-notice-text strong { color: var(--fg); }
#demo-notice-close {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 2px;
  padding: 10px 28px;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}
#demo-notice-close:hover { background: rgba(0, 240, 255, 0.08); }