/* ============================================================
   BlockchainsDNA — Learning Hub
   Theme derived from the Pinnacle Tech Solutions design language
   (midnight navy base, cyan→teal brand, blue-gradient CTAs,
   constellation/network motif) and extended for an animated,
   GSAP-driven educational experience.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Surfaces — deep midnight navy */
  --bg:            #0A0F1E;
  --bg-soft:       #0C1325;
  --panel:         #111A30;
  --panel-2:       #0F1830;
  --surface:       rgba(255, 255, 255, 0.035);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border:        rgba(148, 178, 235, 0.12);
  --border-strong: rgba(148, 178, 235, 0.22);

  /* Brand — cyan → teal (the Pinnacle mark) */
  --brand:        #22D3EE;
  --brand-2:      #2DD4BF;
  --brand-grad:   linear-gradient(100deg, #22D3EE 0%, #2DD4BF 100%);

  /* Accent — royal blue → indigo (the Pinnacle CTA pill) */
  --accent:       #3B82F6;
  --accent-2:     #6366F1;
  --accent-grad:  linear-gradient(120deg, #2563EB 0%, #4F8DFF 55%, #6366F1 100%);
  --accent-glow:  rgba(59, 130, 246, 0.45);

  /* Text */
  --text:        #EAF1FF;
  --text-soft:   #C7D2E6;
  --text-muted:  #93A2BE;
  --text-dim:    #64748B;

  /* Network node palette (signature multicolour graph) */
  --n1:#22C55E; --n2:#D946EF; --n3:#F97316; --n4:#EF4444;
  --n5:#3B82F6; --n6:#A855F7; --n7:#06B6D4; --n8:#FACC15;

  /* Data-viz palette (charts.js reads these — re-skin to re-theme charts) */
  --viz-1:#22D3EE; --viz-2:#3B82F6; --viz-3:#2DD4BF; --viz-4:#A855F7;
  --viz-5:#22C55E; --viz-6:#F97316; --viz-7:#6366F1; --viz-8:#FACC15;

  /* Extended accents (used by inline page styles — keep tokenised) */
  --pink:#EC4899; --pink-soft:#F9A8D4;

  /* Semantic */
  --success:#22C55E; --warning:#FACC15; --danger:#EF4444; --info:#3B82F6;

  /* Type */
  --font-display: 'Poppins', 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  /* Rhythm */
  --container: 1200px;
  --radius:    18px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Ambient background — deep gradient wash + grain feel */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(900px 600px at 12% -5%,  rgba(34, 211, 238, 0.10), transparent 60%),
    radial-gradient(1100px 700px at 95% 0%,  rgba(99, 102, 241, 0.12), transparent 60%),
    radial-gradient(800px 700px at 80% 95%,  rgba(45, 212, 191, 0.07), transparent 65%),
    var(--bg);
}

/* Full-page constellation canvas sits behind everything */
#bg-network {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.55;
}

/* Aurora mesh canvas — full-viewport drifting gradient blobs behind the hero */
#aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 .5em; color: var(--text); }
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); font-weight: 800; letter-spacing: -0.035em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.6rem); }
h4 { font-size: 1.05rem; }
p  { margin: 0 0 1.1em; color: var(--text-soft); }
strong { color: var(--text); font-weight: 600; }
code { font-family: var(--font-mono); font-size: 0.92em; background: rgba(34,211,238,0.10); color: var(--brand); padding: 0.12em 0.4em; border-radius: 6px; }

.text-grad { background: var(--brand-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.text-grad-accent { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.muted { color: var(--text-muted); }
.eyebrow {
  font-family: var(--font-display);
  font-weight: 600; font-size: 0.8rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--brand);
  display: inline-flex; align-items: center; gap: .6rem; margin-bottom: 1.1rem;
}
.eyebrow::before { content: ''; width: 26px; height: 2px; background: var(--brand-grad); border-radius: 2px; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.2rem, 4vw, 2.2rem); }
.container-narrow { max-width: 860px; }
.section { padding-block: clamp(4rem, 9vw, 7.5rem); position: relative; }
.section-tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.center { text-align: center; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--text-muted); max-width: 60ch; }
.center .lead { margin-inline: auto; }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--accent-grad);
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-display); font-weight: 600; font-size: 1rem;
  padding: .85rem 1.6rem; border-radius: var(--radius-pill);
  border: 1px solid transparent; cursor: pointer;
  position: relative; overflow: hidden; isolation: isolate;
  color: #fff; background: var(--btn-bg);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
  box-shadow: 0 10px 30px -8px var(--accent-glow);
  will-change: transform;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -10px var(--accent-glow); }
.btn::after {
  content:''; position:absolute; inset:0; z-index:-1;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,.35), transparent);
  transform: translateX(-150%); transition: transform .7s var(--ease);
}
.btn:hover::after { transform: translateX(150%); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border-strong); box-shadow: none;
}
.btn-ghost:hover { border-color: var(--brand); color: #fff; background: rgba(34,211,238,0.06); box-shadow: 0 0 30px -10px rgba(34,211,238,0.5); }
.btn-sm { padding: .6rem 1.1rem; font-size: .9rem; }
.btn-arrow svg { transition: transform .3s var(--ease); }
.btn:hover .btn-arrow svg { transform: translateX(4px); }

/* ---------- Header / nav ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .4s var(--ease), backdrop-filter .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(10, 15, 30, 0.78);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 78px; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-family: var(--font-display); font-weight: 800; font-size: 1.4rem; letter-spacing: -0.02em; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  background: var(--brand-grad);
  box-shadow: 0 0 22px -4px var(--brand);
  position: relative;
}
.brand .mark::before, .brand .mark::after {
  content:''; position:absolute; border-radius:50%; background:#0A0F1E;
}
.brand .mark::before { inset: 8px; }
.brand .mark::after { width:7px; height:7px; top:13px; left:13px; background: var(--brand); box-shadow: 0 0 10px var(--brand); }
.brand-text { background: var(--brand-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a {
  font-size: .98rem; color: var(--text-soft); font-weight: 500;
  position: relative; padding: .3rem 0; transition: color .25s;
}
.nav-links a::after {
  content:''; position:absolute; left:0; bottom:-2px; height:2px; width:0;
  background: var(--brand-grad); border-radius: 2px; transition: width .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: .8rem; }
.nav-toggle { display:none; background:none; border:0; cursor:pointer; padding:8px; color:var(--text); }
.nav-toggle span { display:block; width:24px; height:2px; background: currentColor; border-radius:2px; margin:5px 0; transition: transform .3s var(--ease), opacity .3s; }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* Scroll progress bar */
.scroll-progress { position: fixed; top:0; left:0; height:3px; width:0; z-index:101; background: var(--brand-grad); box-shadow: 0 0 12px var(--brand); }

/* Mobile drawer */
.mobile-drawer {
  position: fixed; inset: 0; z-index: 99; display: none;
  flex-direction: column; gap: .4rem; padding: 6rem 1.6rem 2rem;
  background: rgba(8, 12, 24, 0.96); backdrop-filter: blur(18px);
  transform: translateY(-100%); transition: transform .45s var(--ease);
}
.mobile-drawer.open { display: flex; transform: translateY(0); }
.mobile-drawer a { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; padding: .7rem 0; border-bottom: 1px solid var(--border); color: var(--text-soft); }
.mobile-drawer a:hover { color: var(--brand); }

/* ---------- Dropdown mega-nav (desktop) ---------- */
/* nav-item fills the full header height so top:100% anchors the dropdown to the
   header's bottom edge and the whole column is a hover target (no dead gap). */
.nav-item { position: relative; display: flex; align-items: center; height: 78px; }
.nav-item > a { display: inline-flex; align-items: center; gap: .3rem; }
.dd-caret { font-size: .65em; opacity: .65; transition: transform .25s var(--ease); }
.nav-item.has-dd:hover > a .dd-caret,
.nav-item.has-dd:focus-within > a .dd-caret { transform: rotate(180deg); }
.nav-dropdown {
  position: absolute; top: 100%; left: 0; padding-top: 8px;  /* small hover bridge */
  z-index: 120;
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(6px); transition: opacity .2s var(--ease), transform .2s var(--ease);
}
.nav-item:nth-last-child(-n+3) .nav-dropdown { left: auto; right: 0; }
.nav-item.has-dd:hover .nav-dropdown,
.nav-item.has-dd:focus-within .nav-dropdown {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0);
}
.dropdown-inner {
  display: grid; gap: .1rem; min-width: 230px; padding: .5rem;
  background: var(--panel); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); box-shadow: 0 26px 64px -22px rgba(0,0,0,.7);
}
/* headings only — no descriptive text */
.nav-dropdown a {
  display: block; padding: .55rem .75rem; border-radius: 10px; white-space: nowrap;
  font-size: .92rem; font-weight: 600; color: var(--text-soft); transition: background .2s var(--ease), color .2s var(--ease);
}
.nav-dropdown a::after { display: none; }              /* no underline inside dropdown */
.nav-dropdown a:hover { background: var(--surface-hover); color: var(--brand); }

/* ---------- Mobile drawer accordion groups ---------- */
.drawer-group { border-bottom: 1px solid var(--border); }
.drawer-group > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center;
  justify-content: space-between; padding: .8rem 0;
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--text-soft);
}
.drawer-group > summary::-webkit-details-marker { display: none; }
.drawer-group[open] > summary { color: #fff; }
.dg-caret { font-size: .7em; opacity: .7; transition: transform .25s var(--ease); }
.drawer-group[open] > summary .dg-caret { transform: rotate(180deg); }
.drawer-sub { display: flex; flex-direction: column; padding: 0 0 .7rem .9rem; }
.drawer-sub a {
  font-family: var(--font-body) !important; font-size: 1rem !important; font-weight: 500 !important;
  padding: .45rem 0 !important; border-bottom: none !important; color: var(--text-muted) !important;
}
.drawer-sub a.dg-overview { color: var(--brand) !important; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: clamp(8rem, 16vh, 11rem); padding-bottom: clamp(4rem, 8vw, 7rem); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1 { margin-bottom: 1.4rem; }
.hero .lead { font-size: clamp(1.1rem, 1.7vw, 1.35rem); margin-bottom: 2.2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-visual {
  position: relative; aspect-ratio: 1 / 0.82; border-radius: var(--radius);
  background: radial-gradient(120% 120% at 50% 40%, rgba(20,28,52,0.9), rgba(10,15,30,0.6));
  border: 1px solid var(--border); overflow: hidden;
  box-shadow: 0 40px 90px -40px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.05);
}
.hero-visual canvas { width: 100%; height: 100%; display: block; }
.hero-visual .glow-ring { position:absolute; inset:0; pointer-events:none; box-shadow: inset 0 0 120px -40px rgba(34,211,238,0.25); border-radius: inherit; }

.hero-badges { display:flex; flex-wrap:wrap; gap:.6rem; margin-top: 2rem; }
.chip {
  display:inline-flex; align-items:center; gap:.5rem; font-size:.82rem; font-weight:500;
  color: var(--text-soft); padding:.45rem .9rem; border-radius: var(--radius-pill);
  background: var(--surface); border: 1px solid var(--border);
}
.chip .dot { width:7px; height:7px; border-radius:50%; background: var(--brand); box-shadow: 0 0 8px var(--brand); }

/* ---------- Cards / glass ---------- */
.glass {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.card {
  position: relative; padding: 1.8rem; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  border: 1px solid var(--border); overflow: hidden;
  transition: transform .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease);
  will-change: transform;
}
.card::before {
  content:''; position:absolute; inset:0; border-radius:inherit; padding:1px;
  background: linear-gradient(140deg, var(--card-accent, var(--brand)), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .45s var(--ease);
}
.card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: 0 30px 60px -30px rgba(0,0,0,0.8); }
.card:hover::before { opacity: 1; }
.card .icon {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  font-size: 1.7rem; margin-bottom: 1.1rem;
  background: color-mix(in srgb, var(--card-accent, var(--brand)) 16%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--brand)) 35%, transparent);
  transition: transform .4s var(--ease);
}
.card:hover .icon { transform: scale(1.08) rotate(-4deg); }
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--text-muted); font-size: .98rem; margin-bottom: 0; }
.card .card-more { display:inline-flex; align-items:center; gap:.4rem; margin-top:1.2rem; color: var(--card-accent, var(--brand)); font-weight:600; font-size:.92rem; opacity:0; transform: translateY(6px); transition: all .35s var(--ease); }
.card:hover .card-more { opacity:1; transform: translateY(0); }
.card-link { display:block; color: inherit; }
.card .topics { list-style:none; padding:0; margin:1rem 0 0; display:grid; grid-template-columns:1fr 1fr; gap:.45rem; }
.card .topics li { font-size:.86rem; color: var(--text-muted); display:flex; gap:.5rem; }
.card .topics li::before { content:'▸'; color: var(--card-accent, var(--brand)); }

/* Accent variants */
.a-blue   { --card-accent: var(--n5); }
.a-teal   { --card-accent: var(--brand-2); }
.a-cyan   { --card-accent: var(--n7); }
.a-violet { --card-accent: var(--n6); }
.a-green  { --card-accent: var(--n1); }
.a-orange { --card-accent: var(--n3); }
.a-pink   { --card-accent: var(--n2); }

/* ---------- Grids ---------- */
.grid { display: grid; gap: 1.4rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Stats ---------- */
.stats { display:grid; grid-template-columns: repeat(4,1fr); gap:1.2rem; }
.stat { text-align:center; padding: 1.6rem 1rem; border-radius: var(--radius); background: var(--surface); border:1px solid var(--border); }
.stat .num { font-family: var(--font-display); font-weight:800; font-size: clamp(2rem,4vw,3rem); line-height:1; background: var(--brand-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.stat .num.accent { background: var(--accent-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.stat .label { margin-top:.6rem; font-size:.85rem; color: var(--text-muted); }

/* ---------- Value props (numbered) ---------- */
.step-num { font-family: var(--font-display); font-weight:800; font-size:2.4rem; background: var(--accent-grad); -webkit-background-clip:text; background-clip:text; color:transparent; line-height:1; }

/* ---------- Prose (article body) ---------- */
.prose { max-width: 820px; margin-inline: auto; }
.prose h2 { margin-top: 2.6rem; padding-top: .4rem; scroll-margin-top: 6rem; }
.prose h2::before { content:''; display:block; width:48px; height:4px; border-radius:3px; background: var(--brand-grad); margin-bottom: 1rem; }
.prose h3 { margin-top: 2rem; color: var(--text); scroll-margin-top: 6rem; }
.prose p, .prose li { color: var(--text-soft); }
.prose ul { padding-left: 1.2rem; margin: 0 0 1.3rem; }
.prose li { margin-bottom: .55rem; }
.prose li::marker { color: var(--brand); }
.prose a { color: var(--brand); border-bottom: 1px solid rgba(34,211,238,0.3); }

/* Callout / opening hook */
.hook {
  position: relative; padding: 1.6rem 1.8rem 1.6rem 2.2rem; margin: 0 0 3rem;
  border-radius: var(--radius); background: linear-gradient(120deg, rgba(34,211,238,0.08), rgba(99,102,241,0.05));
  border: 1px solid var(--border);
}
.hook::before { content:''; position:absolute; left:0; top:1rem; bottom:1rem; width:4px; border-radius:4px; background: var(--brand-grad); }
.hook p { font-size: 1.18rem; font-weight: 500; color: var(--text); margin: 0; }

/* Diagram panel (flow / structure visuals) */
.viz { margin: 2.2rem 0; padding: 1.6rem; border-radius: var(--radius); background: var(--panel); border: 1px solid var(--border); }
.viz h4, .viz .viz-title { font-family: var(--font-display); font-weight:600; font-size: 1rem; color: var(--text); margin: 0 0 1.1rem; }
.viz .caption { font-size: .82rem; color: var(--text-muted); margin: 1rem 0 0; text-align: center; }
.flow { display:flex; align-items:stretch; gap:.6rem; flex-wrap:nowrap; overflow-x:auto; padding-bottom:.3rem; }
.flow-node {
  flex:1; min-width: 130px; padding: .9rem 1rem; border-radius: var(--radius-sm); text-align:center;
  background: var(--surface); border:1px solid var(--border);
}
.flow-node .fn-label { font-weight:700; font-size:.92rem; color: var(--text); }
.flow-node .fn-sub { font-size:.76rem; color: var(--text-muted); margin-top:.25rem; }
.flow-arrow { display:flex; align-items:center; color: var(--brand); font-weight:700; font-size:1.2rem; flex:none; }
.flow-step-note { font-size:.7rem; color: var(--text-dim); text-align:center; margin-top:.3rem; }

/* two-column compare */
.compare { display:grid; grid-template-columns:1fr 1fr; gap:1.2rem; }
.compare .col { padding: 1.2rem; border-radius: var(--radius-sm); background: var(--surface); border:1px solid var(--border); }
.compare .col-title { font-size:.72rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color: var(--text-muted); margin-bottom:.9rem; }
.compare .col.accent { border-color: color-mix(in srgb, var(--brand) 35%, transparent); }
.compare .col.accent .col-title { color: var(--brand); }
.step-pill { padding:.55rem .8rem; border-radius:8px; font-size:.85rem; font-weight:500; text-align:center; background: rgba(255,255,255,0.05); }
.step-pill.b { background: rgba(34,211,238,0.12); color: var(--brand); }
.step-sep { text-align:center; font-size:.68rem; color: var(--text-dim); margin:.25rem 0; }

/* spectrum */
.spectrum { display:flex; gap:.4rem; }
.spectrum .seg { flex:1; padding:.8rem .4rem; border-radius:10px; text-align:center; background: var(--surface); border:1px solid var(--border); }
.spectrum .seg .s-label { font-weight:700; font-size:.85rem; color: var(--text); }
.spectrum .seg .s-sub { font-size:.7rem; color: var(--text-muted); margin-top:.2rem; }
.spectrum-axis { display:flex; justify-content:space-between; font-size:.72rem; color: var(--text-dim); margin-top:.7rem; }

/* table */
.table-wrap { overflow-x:auto; border-radius: var(--radius-sm); }
table.data { width:100%; border-collapse:collapse; min-width: 480px; font-size:.92rem; }
table.data th, table.data td { padding:.7rem .9rem; text-align:center; }
table.data th:first-child, table.data td:first-child { text-align:left; }
table.data thead th { color: var(--text); font-family: var(--font-display); font-weight:600; border-bottom:1px solid var(--border-strong); }
table.data tbody td { color: var(--text-soft); border-bottom:1px solid var(--border); }
table.data tbody tr:hover { background: var(--surface); }
table.data .hl { color: var(--brand); font-weight:600; }

/* formula */
.formula { text-align:center; padding:1.1rem; margin:1.4rem 0; border-radius: var(--radius-sm); background: var(--panel); border:1px solid var(--border); }
.formula .eq { font-family: var(--font-mono); font-size:1.35rem; font-weight:700; color: var(--brand); }
.formula .note { font-size:.82rem; color: var(--text-muted); margin-top:.4rem; }

/* chart image on light card so data viz stays legible */
.chart-card { background:#0E1830; border:1px solid var(--border); border-radius: var(--radius); padding: 1rem; margin: 2rem 0; }
.chart-card img { border-radius: 10px; width:100%; }
.chart-card .caption { font-size:.82rem; color: var(--text-muted); text-align:center; margin-top:.8rem; }

/* key takeaways */
.takeaways { margin: 2.5rem 0; padding: 2rem; border-radius: var(--radius); background: linear-gradient(135deg, rgba(37,99,235,0.16), rgba(99,102,241,0.10)); border:1px solid color-mix(in srgb, var(--accent) 30%, transparent); }
.takeaways h3 { color:#fff; display:flex; align-items:center; gap:.6rem; }
.takeaways ul { list-style:none; padding:0; margin:1rem 0 0; }
.takeaways li { position:relative; padding-left:1.9rem; margin-bottom:.85rem; color: var(--text-soft); }
.takeaways li::before { content:'✦'; position:absolute; left:0; top:0; color: var(--brand); }

/* read meta */
.read-meta { display:flex; gap:.8rem; align-items:center; color: var(--text-muted); font-size:.9rem; }
.read-meta .sep { opacity:.5; }
.back-link { display:inline-flex; align-items:center; gap:.4rem; color: var(--brand); font-weight:500; font-size:.92rem; margin-bottom:1.4rem; transition: gap .25s var(--ease); }
.back-link:hover { gap:.7rem; }

/* page nav (prev / next) */
.page-nav { display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; }

/* breadcrumb */
.crumbs { font-size:.85rem; color: var(--text-dim); margin-bottom:1rem; }
.crumbs a:hover { color: var(--brand); }

/* section heading block */
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-head.center { margin-inline:auto; }

/* CTA band */
.cta-band {
  position: relative; border-radius: 28px; padding: clamp(2.5rem,5vw,4.5rem);
  background: linear-gradient(130deg, rgba(34,211,238,0.12), rgba(99,102,241,0.16));
  border: 1px solid var(--border-strong); overflow: hidden; text-align:center;
}
.cta-band::before { content:''; position:absolute; inset:0; background: radial-gradient(600px 300px at 50% 0%, rgba(34,211,238,0.2), transparent 70%); }
.cta-band > * { position: relative; }

/* footer */
.site-footer { border-top:1px solid var(--border); background: var(--bg-soft); padding-block: 3.5rem 2rem; margin-top: 2rem; }
.footer-grid { display:grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap:2.5rem; margin-bottom:2.5rem; }
.footer-grid h4, .footer-grid h5 { font-size:.8rem; letter-spacing:.12em; text-transform:uppercase; color: var(--text-muted); margin:0 0 1rem; }
.footer-grid ul { list-style:none; padding:0; margin:0; }
.footer-grid li { margin-bottom:.55rem; }
.footer-grid a { color: var(--text-soft); font-size:.95rem; transition: color .2s; }
.footer-grid a:hover { color: var(--brand); }
.footer-grid > div > a { display:block; margin-bottom:.55rem; }

.footer-brand { max-width: 34rem; }
.footer-brand .brand { display:inline-block; margin-bottom:1rem; font-size:1.25rem; }
.footer-brand p { margin:0 0 .9rem; font-size:.95rem; line-height:1.65; color: var(--text-soft); }
.footer-kin { font-size:.9rem !important; color: var(--text-muted) !important; }

.newsletter { display:flex; gap:.6rem; flex-wrap:wrap; margin-top:1.2rem; }
.newsletter input { flex:1 1 12rem; min-width:0; padding:.7rem 1rem; border-radius: var(--radius-pill); background: var(--surface); border:1px solid var(--border); color: var(--text); font-family: var(--font-body); font-size:.9rem; }
.newsletter input::placeholder { color: var(--text-dim); }
.newsletter input:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }

.footer-bottom { display:flex; justify-content:space-between; align-items:center; gap:1rem; padding-top:1.6rem; border-top:1px solid var(--border); flex-wrap:wrap; font-size:.85rem; color: var(--text-dim); }
.footer-bottom .socials { display:flex; gap:1.1rem; }
.footer-bottom .socials a { color: var(--text-muted); }
.footer-bottom .socials a:hover { color: var(--brand); }
.footer-bottom p { margin:0; font-size:.85rem; color: var(--text-dim); }
.footer-bottom .legal { display:flex; gap:1.25rem; flex-wrap:wrap; }
.footer-bottom .legal a { color: var(--text-muted); font-size:.85rem; transition: color .2s; }
.footer-bottom .legal a:hover { color: var(--brand); }

/* ---------- Numbered step cards (e.g. bridge architectures) ---------- */
.steps { list-style:none; padding:0; margin:.8rem 0 0; display:flex; flex-direction:column; gap:.55rem; }
.steps li { display:flex; gap:.6rem; align-items:flex-start; font-size:.86rem; color:var(--text-soft); }
.steps li .n {
  flex:none; width:1.4rem; height:1.4rem; border-radius:6px; display:grid; place-items:center;
  font-size:.72rem; font-weight:700; color:var(--card-accent,var(--brand));
  background: color-mix(in srgb, var(--card-accent,var(--brand)) 16%, transparent);
}
.card .used-by { margin-top:1rem; padding-top:.9rem; border-top:1px solid var(--border); font-size:.75rem; font-weight:600; color:var(--card-accent,var(--brand)); }

/* ---------- Badge / pill labels ---------- */
.badge { display:inline-block; font-size:.72rem; font-weight:600; padding:.3rem .65rem; border-radius:var(--radius-pill); background: color-mix(in srgb, var(--brand) 14%, transparent); color: var(--brand); }
.badge.green { background: rgba(34,197,94,.14); color:#4ade80; }
.badge.violet{ background: rgba(168,85,247,.16); color:#c084fc; }
.badge.orange{ background: rgba(249,115,22,.16); color:#fb923c; }
.tag { display:inline-block; font-size:.72rem; padding:.28rem .6rem; border-radius:8px; background:var(--surface); border:1px solid var(--border); color:var(--text-muted); }
.tags { display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.7rem; }

/* protocol info panel */
.info-row { padding:1.1rem 1.3rem; border-radius:var(--radius-sm); background:var(--surface); border:1px solid var(--border); margin-bottom:.9rem; }
.info-row .ir-head { display:flex; justify-content:space-between; align-items:flex-start; gap:.8rem; margin-bottom:.5rem; }
.info-row h4 { margin:0; font-size:1.1rem; }
.info-row p { font-size:.9rem; color:var(--text-muted); margin:0; }

/* ---------- Danger / exploit cards ---------- */
.danger-card { padding:1.2rem; border-radius:var(--radius-sm); background: rgba(239,68,68,.08); border:1px solid rgba(239,68,68,.28); }
.danger-card .amt { font-family:var(--font-display); font-weight:800; font-size:1.6rem; color:#f87171; line-height:1; }
.danger-card h4 { margin:.5rem 0 .4rem; font-size:1rem; }
.danger-card p { font-size:.84rem; color:var(--text-muted); margin:0; }

/* ---------- Checklist ---------- */
.checklist { display:flex; flex-direction:column; gap:.8rem; margin:.5rem 0 0; }
.checklist .ci { display:flex; gap:.7rem; align-items:flex-start; }
.checklist .ci .tick { flex:none; width:1.3rem; height:1.3rem; border-radius:6px; display:grid; place-items:center; margin-top:.1rem; background: rgba(45,212,191,.16); border:1px solid var(--brand-2); color:var(--brand-2); font-size:.8rem; font-weight:700; }
.checklist .ci .ctext { font-size:.9rem; color:var(--text-soft); }
.checklist .ci .ctext .cnote { display:block; font-size:.78rem; color:var(--text-dim); margin-top:.1rem; }
.checklist .ci .ccat { font-size:.68rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--brand); margin-right:.5rem; }

/* ---------- Transaction lifecycle stepper ---------- */
.lifecycle { display:grid; grid-template-columns:repeat(4,1fr); gap:.6rem; }
.lifecycle .ls { text-align:center; position:relative; }
.lifecycle .ls .circle { width:2.6rem; height:2.6rem; margin:0 auto .6rem; border-radius:50%; display:grid; place-items:center; font-family:var(--font-display); font-weight:700; color:#fff; background:var(--accent-grad); box-shadow:0 6px 18px -6px var(--accent-glow); }
.lifecycle .ls .lt { font-size:.84rem; font-weight:600; color:var(--text); }
.lifecycle .ls .ld { font-size:.74rem; color:var(--text-muted); margin-top:.25rem; }

/* ---------- Severity matrix ---------- */
table.matrix { width:100%; border-collapse:separate; border-spacing:4px; min-width:640px; font-size:.8rem; }
table.matrix thead th { padding:.6rem .5rem; font-family:var(--font-display); font-weight:600; border-radius:8px; }
table.matrix thead th:first-child { text-align:left; background:transparent; }
table.matrix th.sev-crit { color:#fca5a5; } table.matrix th.sev-high { color:#fdba74; }
table.matrix th.sev-med { color:#fde047; } table.matrix th.sev-low { color:#86efac; }
table.matrix td { padding:.55rem .6rem; border-radius:8px; vertical-align:top; color:var(--text-soft); }
table.matrix td.cat { font-weight:600; color:var(--text); background:var(--surface); }
table.matrix td.c-crit { background:rgba(239,68,68,.1); color:#fca5a5; }
table.matrix td.c-high { background:rgba(249,115,22,.1); color:#fdba74; }
table.matrix td.c-med  { background:rgba(234,179,8,.1);  color:#fde047; }
table.matrix td.c-low  { background:rgba(34,197,94,.1);  color:#86efac; }

/* ---------- Mini stat (quick stats row) ---------- */
.ministat { padding:1.3rem; border-radius:var(--radius-sm); background:var(--surface); border:1px solid var(--border); text-align:center; }
.ministat .mv { font-family:var(--font-display); font-weight:800; font-size:1.8rem; background:var(--brand-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.ministat .ml { font-size:.82rem; color:var(--text-muted); margin-top:.3rem; }

/* key/value rows for wallet-type cards */
.kv { display:flex; flex-direction:column; gap:.4rem; margin-top:.6rem; font-size:.84rem; }
.kv .kv-row { display:flex; gap:.6rem; }
.kv .kv-k { color:var(--text-muted); min-width:6.5rem; flex:none; }
.kv .kv-v { color:var(--text-soft); }
.kv .kv-row.div { border-top:1px solid var(--border); padding-top:.5rem; }

/* ---------- Role cards (role explorer) ---------- */
.role-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-left: 4px solid var(--card-accent, var(--brand));
  padding: 1.8rem; margin-bottom: 1.4rem;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.role-card:hover { transform: translateY(-4px); box-shadow: 0 26px 50px -28px rgba(0,0,0,.75); }
.role-head { display:flex; justify-content:space-between; gap:1rem; align-items:flex-start; flex-wrap:wrap; margin-bottom:1.2rem; }
.role-head h3 { margin:0 0 .35rem; }
.role-head .role-desc { font-style:italic; color:var(--text-muted); font-size:.95rem; max-width:46ch; }
.salary-pill {
  flex:none; font-family:var(--font-display); font-weight:700; font-size:.92rem; white-space:nowrap;
  padding:.5rem .9rem; border-radius:10px; color:var(--card-accent,var(--brand));
  background: color-mix(in srgb, var(--card-accent,var(--brand)) 14%, transparent);
  border:1px solid color-mix(in srgb, var(--card-accent,var(--brand)) 30%, transparent);
}
.role-sub-h { font-family:var(--font-display); font-weight:600; font-size:1rem; margin:0 0 .6rem; color:var(--text); }
.rlist { list-style:none; padding:0; margin:0 0 1.2rem; display:flex; flex-direction:column; gap:.5rem; }
.rlist li { display:flex; gap:.6rem; font-size:.92rem; color:var(--text-soft); align-items:flex-start; }
.rlist li::before { content:'✓'; color:var(--card-accent,var(--brand)); font-weight:700; flex:none; margin-top:.05rem; }
.role-tech { font-size:.92rem; color:var(--text-muted); margin-bottom:1.2rem; }

/* accent-aware note / callout box */
.note-box {
  padding:1rem 1.2rem; border-radius:var(--radius-sm); margin:0 0 .4rem;
  border-left:4px solid var(--nb, var(--card-accent, var(--brand)));
  background: color-mix(in srgb, var(--nb, var(--card-accent, var(--brand))) 9%, transparent);
}
.note-box h4 { font-size:.92rem; margin:0 0 .4rem; color:var(--text); }
.note-box p { font-size:.86rem; color:var(--text-soft); margin:0; }
.note-box.amber { --nb:#f59e0b; }
.note-box.blue  { --nb:#3b82f6; }

.role-actions { display:flex; flex-wrap:wrap; gap:.7rem; margin-top:1.3rem; padding-top:1.2rem; border-top:1px solid var(--border); }

/* category section header w/ icon */
.cat-head { display:flex; gap:1rem; align-items:flex-start; margin-bottom:1.6rem; }
.cat-head .cat-ico { width:3rem; height:3rem; border-radius:12px; flex:none; display:grid; place-items:center; font-size:1.4rem; background: color-mix(in srgb, var(--card-accent,var(--brand)) 16%, transparent); border:1px solid color-mix(in srgb, var(--card-accent,var(--brand)) 32%, transparent); }
.cat-head h2 { margin:0 0 .35rem; }
.cat-head h2::before { display:none; }
.cat-head p { font-size:.95rem; color:var(--text-muted); margin:0; }

/* ---------- Filter bar ---------- */
.filter-bar { display:flex; flex-wrap:wrap; gap:.6rem; justify-content:center; margin-bottom:2.5rem; }
.filter-btn {
  font-family:var(--font-display); font-weight:600; font-size:.9rem; cursor:pointer;
  padding:.55rem 1.1rem; border-radius:var(--radius-pill);
  background:var(--surface); border:1px solid var(--border); color:var(--text-soft);
  transition: all .3s var(--ease);
}
.filter-btn:hover { border-color:var(--border-strong); color:#fff; }
.filter-btn.active { background:var(--accent-grad); color:#fff; border-color:transparent; box-shadow:0 10px 26px -10px var(--accent-glow); }

/* ---------- Progression ladder ---------- */
.ladder { position:relative; }
.ladder::before { content:''; position:absolute; left:2rem; top:1rem; bottom:1rem; width:2px; background:linear-gradient(var(--brand),var(--accent-2)); opacity:.4; }
.rung { position:relative; display:flex; gap:1.3rem; align-items:flex-start; margin-bottom:1.3rem; }
.rung .badge-lvl { width:4rem; height:4rem; flex:none; border-radius:14px; display:grid; place-items:center; text-align:center; z-index:1;
  background: color-mix(in srgb, var(--brand) 14%, transparent); border:1px solid var(--brand); color:var(--brand);
  font-family:var(--font-display); font-weight:700; font-size:.68rem; line-height:1.1; padding:.3rem; }
.rung .rung-body { flex:1; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-sm); padding:1.3rem; }
.rung .rung-top { display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; margin-bottom:.7rem; }
.rung .rung-top h3 { margin:0; font-size:1.15rem; }
.rung .exp { font-size:.84rem; color:var(--text-muted); }
.rung .sal { text-align:right; }
.rung .sal .usd { font-family:var(--font-display); font-weight:700; color:var(--brand); font-size:.92rem; }
.rung .sal .gbp { font-size:.78rem; color:var(--text-muted); }
.skill-pills { display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.8rem; }
.skill-pills span { font-size:.74rem; padding:.28rem .6rem; border-radius:var(--radius-pill); background:color-mix(in srgb,var(--brand) 12%,transparent); color:var(--brand); }

/* ---------- From → To pathway cards ---------- */
.pathway { display:block; padding:1.3rem; border-radius:var(--radius-sm); background:var(--surface); border:1px solid var(--border); transition:all .35s var(--ease); }
.pathway:hover { border-color:var(--border-strong); transform:translateY(-3px); }
.pathway .pw-row { display:flex; align-items:center; gap:.9rem; margin-bottom:1rem; }
.pathway .pw-col { flex:1; }
.pathway .pw-k { font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; color:var(--text-dim); margin-bottom:.2rem; }
.pathway .pw-v { font-weight:700; color:var(--text); font-size:.95rem; }
.pathway .pw-arrow { color:var(--brand); flex:none; }
.pathway .pw-time { font-size:.82rem; font-weight:600; color:var(--brand); background:color-mix(in srgb,var(--brand) 12%,transparent); border-radius:8px; padding:.4rem .7rem; }

/* phase list (entry pathways) */
.phase { display:flex; gap:1rem; align-items:flex-start; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-sm); padding:1.3rem; margin-bottom:1rem; }
.phase .pn { width:2.4rem; height:2.4rem; flex:none; border-radius:10px; display:grid; place-items:center; font-family:var(--font-display); font-weight:700; color:#fff; background:var(--accent-grad); }
.phase .ptag { font-size:.7rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--brand); }
.phase h4 { margin:.2rem 0 .7rem; font-size:1.05rem; }

/* ---------- Definition rows (tool cards) ---------- */
.deflist { margin:0; }
.deflist .dl-row { margin-bottom:.7rem; }
.deflist dt { font-size:.66rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--text-dim); }
.deflist dd { margin:.1rem 0 0; font-size:.86rem; color:var(--text-soft); }

/* token lifecycle / generic horizontal stage flow with coloured nodes */
.stageflow { display:flex; flex-wrap:wrap; align-items:center; justify-content:center; gap:.6rem; }
.stage { flex:1; min-width:130px; max-width:180px; padding:1rem; border-radius:var(--radius-sm); text-align:center; background:var(--surface); border:1px solid var(--border); border-top:3px solid var(--st,var(--brand)); }
.stage .stage-ico { font-size:1.5rem; }
.stage .stage-t { font-weight:700; font-size:.9rem; color:var(--text); margin-top:.3rem; }
.stage .stage-d { font-size:.74rem; color:var(--text-muted); margin-top:.25rem; }

/* sprint / multi-column plan card */
.cols { display:grid; gap:0; border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; }
.cols.c3 { grid-template-columns:repeat(3,1fr); }
.cols .col-cell { padding:1.3rem; border-right:1px solid var(--border); }
.cols .col-cell:last-child { border-right:0; }
.cols .col-head { font-size:.7rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--brand); margin-bottom:.4rem; }
.cols .col-cell h4 { margin:0 0 .7rem; font-size:1rem; }

/* learning tier stack */
.tier { border-radius:var(--radius-sm); border:1px solid var(--border); padding:1.1rem 1.3rem; margin-bottom:.8rem; background:color-mix(in srgb,var(--tc,var(--brand)) 7%,transparent); border-left:4px solid var(--tc,var(--brand)); }
.tier .tier-head { display:flex; align-items:center; gap:.7rem; margin-bottom:.5rem; }
.tier .tier-badge { font-size:.7rem; font-weight:700; color:#fff; background:var(--tc,var(--brand)); padding:.2rem .6rem; border-radius:6px; }
.tier .tier-title { font-weight:700; color:var(--text); }
.tier p { font-size:.86rem; color:var(--text-soft); margin:0 0 .6rem; }

/* ---------- Horizontal bar chart (role demand) ---------- */
.barchart { display:flex; flex-direction:column; gap:1rem; }
.barrow .bar-top { display:flex; justify-content:space-between; align-items:center; margin-bottom:.4rem; }
.barrow .bar-label { font-size:.9rem; font-weight:500; color:var(--text); }
.barrow .bar-val { font-size:.9rem; font-weight:700; color:#4ade80; }
.bar-track { width:100%; height:.7rem; border-radius:var(--radius-pill); background:rgba(255,255,255,.06); overflow:hidden; }
.bar-fill { height:100%; border-radius:var(--radius-pill); width:0; background:var(--bf,var(--accent-grad)); transition:width 1.1s var(--ease); }

/* trend segment cards */
.seg-card { padding:1.2rem; border-radius:var(--radius-sm); background:var(--surface); border:1px solid var(--border); border-top:3px solid var(--sc,var(--brand)); }
.seg-card .seg-top { display:flex; justify-content:space-between; align-items:center; margin-bottom:.4rem; }
.seg-card .seg-pct { font-family:var(--font-display); font-weight:800; font-size:1.6rem; color:var(--sc,var(--brand)); }
.seg-card .seg-trend.up { color:#4ade80; } .seg-card .seg-trend.down { color:#f87171; } .seg-card .seg-trend.stable { color:var(--text-muted); }
.seg-card h4 { margin:0 0 .25rem; }
.seg-card p { font-size:.8rem; color:var(--text-muted); margin:0; }

/* vesting timeline */
.vesting-bar { display:flex; border-radius:var(--radius-sm); overflow:hidden; height:2.6rem; }
.vesting-bar .vseg { flex:1; display:grid; place-items:center; font-size:.72rem; font-weight:700; color:#fff; }
.vesting-bar .vseg.cliff { background:rgba(255,255,255,.1); color:var(--text-muted); }
.vesting-axis { display:flex; margin-top:.5rem; }
.vesting-axis span { flex:1; text-align:center; font-size:.72rem; color:var(--text-dim); }

/* salary 3-tier row */
.salrow { border-left:4px solid var(--sr,var(--brand)); border-radius:0 var(--radius-sm) var(--radius-sm) 0; background:var(--surface); border-top:1px solid var(--border); border-right:1px solid var(--border); border-bottom:1px solid var(--border); padding:1.2rem 1.3rem; margin-bottom:.8rem; }
.salrow h4 { margin:0 0 .8rem; font-size:1.05rem; }
.salrow .sal-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:.8rem; }
.salrow .sal-cell .sc-k { font-size:.72rem; color:var(--text-muted); margin-bottom:.3rem; }
.salrow .sal-cell .sc-v { font-size:.86rem; font-weight:700; color:var(--sr,var(--brand)); }
@media (max-width:600px){ .salrow .sal-grid { grid-template-columns:1fr; gap:.5rem; } }

/* ---------- Journey profile cards ---------- */
.profile { border:1px solid var(--border); border-top:3px solid var(--pc,var(--brand)); border-radius:var(--radius); overflow:hidden; background:var(--surface); margin-bottom:1.6rem; }
.profile .pf-head { padding:1.4rem 1.6rem; display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; align-items:flex-start; border-bottom:1px solid var(--border); }
.profile .pf-head h3 { margin:0 0 .25rem; font-size:1.5rem; }
.profile .pf-route { font-size:.92rem; color:var(--text-soft); }
.profile .pf-route strong { color:var(--pc,var(--brand)); }
.profile .pf-ind { font-size:.78rem; color:var(--text-dim); margin-top:.25rem; }
.profile .pf-badges { display:flex; gap:.5rem; flex-wrap:wrap; }
.profile .pf-section { padding:1.4rem 1.6rem; }
.profile .pf-section + .pf-section { border-top:1px solid var(--border); }
.profile .pf-label { font-size:.72rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase; color:var(--text-muted); margin-bottom:.8rem; }
.profile .quote { border-left:3px solid var(--pc,var(--brand)); padding-left:1rem; font-style:italic; color:var(--text); font-size:.92rem; margin:.8rem 0 0; }

/* skill mapping (from → to) */
.skillmap { display:grid; grid-template-columns:1fr auto 1fr; gap:.7rem 1rem; align-items:center; }
.skillmap .sm-chip { padding:.7rem 1rem; border-radius:10px; text-align:center; font-size:.9rem; font-weight:600; border:1px solid var(--border); }
.skillmap .sm-from { background:rgba(59,130,246,.1); color:#93c5fd; border-color:rgba(59,130,246,.3); }
.skillmap .sm-to { background:rgba(34,197,94,.1); color:#86efac; border-color:rgba(34,197,94,.3); }
.skillmap .sm-arrow { color:var(--brand); font-weight:700; font-size:1.2rem; text-align:center; }
@media (max-width:600px){ .skillmap { grid-template-columns:1fr; } .skillmap .sm-arrow { transform:rotate(90deg); } }

/* ---------- Code block ---------- */
.codeblock { background:#0b1426; border:1px solid var(--border); border-radius:var(--radius-sm); padding:1.1rem 1.3rem; margin:1.4rem 0; overflow-x:auto; }
.codeblock pre { margin:0; font-family:var(--font-mono); font-size:.84rem; line-height:1.6; color:#c7d2e6; white-space:pre; }
.prose .codeblock code { background:none; padding:0; color:inherit; }

/* note-box with bullet list (callouts in long-form articles) */
.note-box ul { margin:.6rem 0 0; padding-left:1.1rem; }
.note-box ul li { font-size:.86rem; color:var(--text-soft); margin-bottom:.4rem; }
.note-box ul li::marker { color:var(--nb,var(--brand)); }
.note-box ul li strong { color:var(--text); }

/* simple icon-led directory card grid helper */
.dir-tag { display:inline-block; font-size:.7rem; font-weight:600; letter-spacing:.04em; color:var(--text-muted); text-transform:uppercase; margin-bottom:.4rem; }

/* ---------- Forms ---------- */
.form-section { padding:1.6rem 0; border-bottom:1px solid var(--border); }
.form-section:last-of-type { border-bottom:0; }
.form-section h3 { color:var(--brand); font-size:1.3rem; margin:0 0 .4rem; }
.form-section .fs-note { font-size:.85rem; color:var(--text-muted); margin:0 0 1.2rem; }
.field { margin-bottom:1.2rem; }
.field label { display:block; font-weight:600; font-size:.92rem; color:var(--text); margin-bottom:.4rem; }
.field .req { color:#f87171; }
.field .hint { font-size:.8rem; color:var(--text-dim); margin-top:.3rem; }
.field input, .field select, .field textarea {
  width:100%; padding:.75rem 1rem; border-radius:var(--radius-sm);
  background:var(--surface); border:1px solid var(--border); color:var(--text);
  font-family:var(--font-body); font-size:.95rem; transition:border-color .25s;
}
.field input::placeholder, .field textarea::placeholder { color:var(--text-dim); }
.field input:focus, .field select:focus, .field textarea:focus { outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(34,211,238,.12); }
.field select option { background:#0e1830; color:var(--text); }
.field textarea { resize:vertical; min-height:90px; }
.check-row { display:flex; gap:.7rem; align-items:flex-start; margin-bottom:1rem; font-size:.9rem; color:var(--text-soft); }
.check-row input { width:1.1rem; height:1.1rem; margin-top:.2rem; flex:none; accent-color:var(--brand); }
.check-row a { color:var(--brand); }

/* numbered step list (vertical) */
.steplist { display:flex; flex-direction:column; gap:1rem; }
.steplist .sl-item { display:flex; gap:1rem; align-items:flex-start; }
.steplist .sl-n { width:2rem; height:2rem; flex:none; border-radius:50%; display:grid; place-items:center; font-weight:700; font-size:.85rem; color:#fff; background:var(--accent-grad); }
.steplist .sl-item h4 { margin:.1rem 0 .2rem; font-size:1rem; }
.steplist .sl-item p { font-size:.86rem; color:var(--text-muted); margin:0; }

/* ---------- Marquee (auto-scrolling chip strip) ---------- */
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: inline-flex; gap: .8rem; white-space: nowrap; will-change: transform;
  animation: marquee-scroll var(--marquee-dur, 36s) linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-chip {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem 1.05rem; border: 1px solid var(--border);
  border-radius: var(--radius-pill); background: var(--surface);
  color: var(--text-soft); font-size: .9rem; font-weight: 600;
}
.marquee-chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-grad); }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- Clip-reveal headings (line-by-line mask) ---------- */
.clip-reveal .line { display: block; overflow: hidden; }
.clip-reveal .line > span { display: block; }

/* ---------- charts.js (declarative inline-SVG, theme-aware) ---------- */
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .c-grid   { stroke: var(--border); stroke-width: 1; }
.chart .c-axis   { fill: var(--text-muted); font: 600 12px var(--font-body); }
.chart .c-label  { fill: var(--text-soft); font: 600 13px var(--font-body); }
.chart .c-val    { fill: var(--text); font: 700 13px var(--font-body); }
.chart .c-title  { fill: var(--text); font: 700 1.05rem var(--font-display); }
.chart .c-sub    { fill: var(--text-muted); font: 500 .85rem var(--font-body); }
.chart .c-legend { fill: var(--text-soft); font: 600 12px var(--font-body); }
.chart .c-legend-row { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; margin-top: .6rem; }
.chart .c-legend-row span { display: inline-flex; align-items: center; gap: .4rem; font-size: .82rem; color: var(--text-soft); }
.chart .c-legend-row i { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }

/* ---------- Reveal animation base (GSAP toggles these) ---------- */
[data-reveal] { opacity: 0; }
.no-anim [data-reveal] { opacity: 1 !important; transform: none !important; }
/* Progressive enhancement: with JS disabled the no-js class is never removed,
   so reveal content must stay fully visible. */
.no-js [data-reveal] { opacity: 1 !important; transform: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 520px; margin-inline: auto; width: 100%; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .stats { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-brand { grid-column: 1 / -1; max-width: none; }
}
@media (max-width: 760px) {
  .nav-links, .nav-right .btn { display: none; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .compare { grid-template-columns: 1fr; }
  .spectrum { flex-wrap: wrap; }
  .spectrum .seg { min-width: 40%; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .grid-4, .stats { grid-template-columns: 1fr; }
  body { font-size: 16px; }
}

/* ---------- Accessibility ---------- */
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }
.btn:focus-visible { outline-offset: 3px; }
/* keep in-page anchor targets clear of the fixed header (no-JS fallback) */
[id] { scroll-margin-top: 92px; }
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--panel); color: var(--text); padding: .7rem 1.1rem; border-radius: 10px;
  border: 1px solid var(--border-strong); transition: top .25s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Reduced motion ----------
   Intentionally disabled: animations are always enabled by owner preference,
   so the OS "reduce motion" setting no longer suppresses motion here. The
   `.no-anim [data-reveal]` rule above still guarantees content is visible if
   GSAP fails to load. To restore reduced-motion support, re-add:

   @media (prefers-reduced-motion: reduce) {
     * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
     [data-reveal] { opacity: 1 !important; transform: none !important; }
     #bg-network { display: none; }
   }
*/