/* ============================================================
   BA LEARNING HUB — Static Site Design System
   Part of the Pinnacle family (dark, premium, gradient-tech)
   but its own identity: indigo-plum base · violet→indigo brand
   · warm amber/gold "knowledge" highlight.
   Signature motion: aurora mesh + knowledge-orbit (not Pinnacle's
   plexus/network graph). Token-driven — retune from :root.
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Surfaces (indigo-plum night — sibling to Pinnacle's blue-navy) */
  --bg:           #0e0a1f;
  --bg-grad-1:    #0e0a1f;
  --bg-grad-2:    #140c2b;
  --panel:        #1a1136;
  --surface:      #20153f;
  --surface-2:    #281a52;
  --surface-3:    #342266;
  --border:       rgba(167, 139, 250, 0.14);
  --border-strong:rgba(167, 139, 250, 0.30);

  /* Text */
  --text:         #f6f4fc;
  --text-soft:    #d7d3ea;
  --text-muted:   #a39bc4;
  --text-dim:     #6f6794;

  /* Brand accents */
  --violet:       #8b5cf6;
  --violet-light: #a78bfa;
  --indigo:       #6366f1;
  --purple:       #a855f7;
  --hl:           #fbbf24;   /* knowledge highlight (amber/gold) */
  --amber:        #f59e0b;
  --rose:         #f472b6;
  --sky:          #38bdf8;

  /* Gradients */
  --grad-brand:   linear-gradient(100deg, #a78bfa 0%, #8b5cf6 45%, #6366f1 100%);
  --grad-cta:     linear-gradient(120deg, #7c3aed 0%, #6366f1 100%);
  --grad-gold:    linear-gradient(120deg, #fbbf24 0%, #f59e0b 100%);
  --grad-text:    linear-gradient(95deg, #c4b5fd 0%, #a78bfa 38%, #fbbf24 100%);
  --glow-violet:  0 10px 36px -10px rgba(124, 58, 237, .65);
  --glow-gold:    0 0 0 1px rgba(251,191,36,.25), 0 12px 40px -12px rgba(245,158,11,.45);

  /* Data-viz / accent palette */
  --viz-1: #8b5cf6; --viz-2: #fbbf24; --viz-3: #f472b6;
  --viz-4: #38bdf8; --viz-5: #34d399; --viz-6: #a855f7;
  --viz-7: #f59e0b; --viz-8: #818cf8;

  /* Semantic */
  --success: #34d399;
  --warning: #fbbf24;
  --danger:  #fb7185;
  --info:    #38bdf8;

  /* Geometry */
  --radius-sm: 10px;
  --radius:    16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --pill:      999px;

  /* Layout */
  --maxw:      1200px;
  --maxw-prose:780px;
  --gutter:    clamp(20px, 5vw, 48px);
  --header-h:  76px;

  /* Type (shared with Pinnacle family for recognition) */
  --font-display: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur:  .5s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- Lenis smooth scroll (required overrides) ----------
   Lenis drives scrolling in JS by setting the scroll position every frame.
   While it is active the browser's native CSS `scroll-behavior: smooth`
   must be turned off, otherwise the native smooth-scroll animates toward
   each position Lenis sets and the two fight — the cause of the laggy,
   jumpy "jumps with each scroll" wheel behaviour. Lenis adds the
   `.lenis .lenis-smooth` classes to <html> when running, so these official
   Lenis styles only take effect then; with Lenis off (reduced-motion / no
   GSAP) the native smooth anchor scrolling above still applies. */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-smooth iframe { pointer-events: none; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Ambient background glow + faint grid (warmer, plum-tinted) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 700px at 80% -8%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(900px 600px at -5% 10%, rgba(251,191,36,.10), transparent 55%),
    linear-gradient(180deg, var(--bg-grad-1), var(--bg-grad-2));
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(167,139,250,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167,139,250,.045) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at 50% 26%, #000 0%, transparent 76%);
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font: inherit; }

::selection { background: rgba(139,92,246,.35); color: #fff; }

/* Scrollbar */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 99px; border: 3px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #463089; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
}
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); }
h2 { font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.12; }
h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); }
h4 { font-size: clamp(1.2rem, 1.6vw, 1.45rem); }
h5 { font-size: 1.12rem; }
h6 { font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: var(--hl); font-weight: 600; }
p  { color: var(--text-soft); }
strong { color: var(--text); font-weight: 600; }
small { font-size: .85rem; }
code {
  font-family: var(--font-mono);
  font-size: .88em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: .12em .45em;
  border-radius: 6px;
  color: var(--violet-light);
}

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.text-hl { color: var(--hl); }
.text-violet { color: var(--violet-light); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-display);
  font-size: .78rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  color: var(--hl);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: ""; width: 28px; height: 2px; border-radius: 2px;
  background: var(--grad-gold);
}

.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--text-soft); line-height: 1.65; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.container-prose { max-width: var(--maxw-prose); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 9vw, 128px); position: relative; }
.section--tight { padding-block: clamp(48px, 6vw, 80px); }
.section-head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { margin-top: 1rem; font-size: 1.1rem; }

.grid { display: grid; gap: clamp(20px, 3vw, 32px); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-sm { gap: .75rem; } .gap { gap: 1rem; } .gap-lg { gap: 1.5rem; }
.wrap { flex-wrap: wrap; }
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mt-6{margin-top:3rem}
.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}
.divider { height: 1px; background: var(--border); border: 0; margin-block: clamp(48px,6vw,80px); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  body { font-size: 16px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font-family: var(--font-display); font-weight: 600; font-size: .98rem;
  padding: .92rem 1.7rem; border-radius: var(--pill);
  min-height: 52px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
  will-change: transform; position: relative; white-space: nowrap; overflow: hidden;
}
/* light sweep glint on hover */
.btn::after {
  content: ""; position: absolute; top: 0; left: -120%; width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.30), transparent);
  transform: skewX(-18deg); pointer-events: none;
}
.btn:hover::after { left: 140%; transition: left .7s var(--ease); }
.btn > * { position: relative; }
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--grad-cta); color: #fff; box-shadow: var(--glow-violet); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 44px -10px rgba(124,58,237,.8); }
.btn-ghost { background: transparent; color: var(--text); border: 1.5px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--violet); color: #fff; transform: translateY(-3px); background: rgba(139,92,246,.08); }
.btn-gold { background: var(--grad-gold); color: #2a1c02; box-shadow: var(--glow-gold); }
.btn-gold:hover { transform: translateY(-3px); }
.btn-sm { padding: .6rem 1.2rem; min-height: 44px; font-size: .9rem; }
.btn-block { width: 100%; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .4rem; font-weight: 600;
  color: var(--hl); font-family: var(--font-display); font-size: .95rem;
}
.link-arrow .arr { transition: transform .3s var(--ease); }
.link-arrow:hover .arr { transform: translateX(5px); }

/* ---------- Cards ---------- */
.card {
  position: relative;
  background: linear-gradient(180deg, var(--surface) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.4vw, 2.1rem);
  transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
  overflow: hidden;
  height: 100%;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad-brand);
  -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 .4s var(--ease); pointer-events: none;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 24px 60px -24px rgba(0,0,0,.7); }
.card:hover::before { opacity: .9; }
/* cursor-follow spotlight (driven by --mx/--my from animations.js) */
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), rgba(167,139,250,.16), transparent 42%);
  opacity: 0; transition: opacity .4s var(--ease); z-index: 0;
}
.card:hover::after { opacity: 1; }
.card > * { position: relative; z-index: 1; }
.card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: grid; place-items: center; font-size: 1.6rem; margin-bottom: 1.2rem;
  background: rgba(139,92,246,.12); border: 1px solid rgba(139,92,246,.24); color: var(--violet-light);
}
.card h3, .card h4 { margin-bottom: .7rem; }
.card p { font-size: 1rem; }
.card-link { margin-top: 1.3rem; }

/* card accent colour variants for the icon */
.acc-violet .card-icon{ background: rgba(139,92,246,.13); border-color: rgba(139,92,246,.28); color: var(--violet-light); }
.acc-indigo .card-icon{ background: rgba(99,102,241,.13);  border-color: rgba(99,102,241,.28);  color: #818cf8; }
.acc-gold .card-icon  { background: rgba(251,191,36,.13);  border-color: rgba(251,191,36,.28);  color: var(--hl); }
.acc-rose .card-icon  { background: rgba(244,114,182,.13); border-color: rgba(244,114,182,.28); color: var(--rose); }
.acc-sky .card-icon   { background: rgba(56,189,248,.13);  border-color: rgba(56,189,248,.28);  color: var(--sky); }

/* Glass panel */
.glass {
  background: rgba(32, 21, 63, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

/* ---------- Badges / pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .8rem; font-weight: 600; font-family: var(--font-display);
  padding: .35rem .8rem; border-radius: var(--pill);
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-soft);
}
.badge-violet{ background: rgba(139,92,246,.13); border-color: rgba(139,92,246,.32); color: var(--violet-light); }
.badge-gold { background: rgba(251,191,36,.13); border-color: rgba(251,191,36,.32); color: var(--hl); }
.badge-sky  { background: rgba(56,189,248,.13); border-color: rgba(56,189,248,.32); color: var(--sky); }
.badge-rose { background: rgba(244,114,182,.13); border-color: rgba(244,114,182,.32); color: var(--rose); }

/* ---------- Stats ---------- */
.stat { text-align: center; }
.stat-num {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.6rem, 5vw, 3.8rem); line-height: 1;
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-label { color: var(--text-muted); margin-top: .7rem; font-size: .98rem; }

/* ---------- Prose (long-form content pages) ---------- */
.prose { max-width: var(--maxw-prose); color: var(--text-soft); }
.prose.wide { max-width: 900px; }
.prose p { margin-bottom: 1.3rem; font-size: 1.08rem; line-height: 1.8; }
.prose h2 { margin-top: 2.6rem; margin-bottom: 1.1rem; }
.prose h3 { margin-top: 2rem; margin-bottom: .8rem; }
.prose ul, .prose ol { margin: 0 0 1.4rem 1.3rem; }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: 1.5rem; margin-bottom: .7rem; color: var(--text-soft); }
.prose ul li::before { content: ""; position: absolute; left: 0; top: .65em; width: 7px; height: 7px; border-radius: 2px; background: var(--grad-gold); }
.prose ol { list-style: decimal; }
.prose ol li { margin-bottom: .7rem; padding-left: .4rem; }
.prose ol li::marker { color: var(--hl); font-family: var(--font-display); font-weight: 700; }
.prose a { color: var(--violet-light); border-bottom: 1px solid rgba(167,139,250,.4); }
.prose a:hover { border-color: var(--violet-light); }
.prose blockquote {
  border-left: 3px solid var(--hl); padding: .6rem 0 .6rem 1.4rem; margin: 1.6rem 0;
  font-style: italic; color: var(--text); font-size: 1.12rem;
}

/* Back link */
.back-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--text-muted); font-weight: 500; margin-bottom: 1.4rem; transition: color .25s; }
.back-link:hover { color: var(--hl); }

/* numbered responsibility / list cards */
.numbered { counter-reset: n; display: grid; gap: 1.2rem; }
.numbered .card { display: flex; gap: 1.3rem; align-items: flex-start; }
.num-chip {
  flex: 0 0 auto; width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 1.1rem;
  background: rgba(251,191,36,.13); border: 1px solid rgba(251,191,36,.3); color: var(--hl);
}

/* feature list with check */
.checklist li { position: relative; padding-left: 2rem; margin-bottom: .9rem; color: var(--text-soft); }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 6px;
  display: grid; place-items: center; font-size: .75rem; font-weight: 700;
  background: rgba(139,92,246,.15); color: var(--violet-light);
}

/* image frame for content diagrams */
.figure { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--panel); padding: .6rem; }
.figure img { border-radius: calc(var(--radius) - 8px); width: 100%; }
.figure figcaption { color: var(--text-dim); font-size: .85rem; text-align: center; padding: .7rem; }

/* table */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.data { width: 100%; border-collapse: collapse; font-size: .96rem; }
table.data th, table.data td { padding: .9rem 1.1rem; text-align: left; border-bottom: 1px solid var(--border); }
table.data th { font-family: var(--font-display); color: var(--text); background: var(--surface-2); font-weight: 600; }
table.data tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: rgba(255,255,255,.02); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 92vh; display: flex; align-items: center;
  padding-top: calc(var(--header-h) + 2vw); overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; width: 100%; }
.hero h1 { margin-bottom: 1.5rem; }
.hero .lead { max-width: 540px; margin-bottom: 1rem; }
.hero-sub { color: var(--text-muted); max-width: 520px; margin-bottom: 2.2rem; }
.hero-visual {
  position: relative; aspect-ratio: 1 / 0.92; border-radius: var(--radius-lg);
  display: grid; place-items: center;
}
.hero-visual canvas { width: 100%; height: 100%; display: block; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero .lead, .hero-sub { margin-inline: auto; }
  .hero-cta { justify-content: center; }
  .hero-visual { max-width: 440px; margin: 1rem auto 0; }
}

/* aurora mesh background (replaces plexus) */
#aurora { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h); display: flex; align-items: center;
  transition: background .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease), transform .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(14, 10, 31, 0.82); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}
.site-header.hide { transform: translateY(-100%); }
.nav { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; display: flex; align-items: center; gap: .55rem; }
.brand .mark {
  background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.brand .hub { color: var(--hl); }
.nav-links { display: flex; align-items: center; gap: .35rem; }
.nav-item { position: relative; }
.nav-link {
  position: relative;
  display: inline-flex; align-items: center; gap: .35rem; padding: .55rem .85rem; border-radius: 10px;
  color: var(--text-soft); font-weight: 500; font-size: .95rem; transition: color .25s, background .25s;
}
.nav-link:hover, .nav-item:hover > .nav-link { color: #fff; background: rgba(255,255,255,.05); }
.nav-link::after {
  content: ""; position: absolute; left: .85rem; right: .85rem; bottom: .32rem; height: 2px;
  background: var(--grad-gold); border-radius: 2px; transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-link:hover::after, .nav-item:hover > .nav-link::after { transform: scaleX(1); }
.nav-link .chev { width: 14px; height: 14px; opacity: .6; transition: transform .3s; }
.nav-item:hover .chev { transform: rotate(180deg); }
.dropdown {
  position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 300px; padding: .5rem; border-radius: var(--radius);
  background: rgba(20, 12, 43, 0.97); backdrop-filter: blur(20px);
  border: 1px solid var(--border); box-shadow: 0 30px 70px -30px rgba(0,0,0,.85);
  display: grid; grid-template-columns: 1fr; gap: .15rem;
  opacity: 0; visibility: hidden; transition: opacity .3s var(--ease), transform .3s var(--ease);
}
/* Invisible bridge across the gap between the nav link and the dropdown so the
   pointer can travel down to a submenu without :hover dropping out. */
.dropdown::before {
  content: ""; position: absolute; left: 0; right: 0; top: -14px; height: 14px;
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown.single { grid-template-columns: 1fr; min-width: 280px; }
.drop-link { display: block; padding: .6rem .85rem; border-radius: 10px; transition: background .25s; }
.drop-link:hover { background: rgba(139,92,246,.1); }
.drop-link .t { font-family: var(--font-display); font-weight: 600; font-size: .92rem; color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: .8rem; }

.menu-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--border); place-items: center; }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s var(--ease); position: relative;
}
.menu-toggle span::before { position: absolute; top: -6px; } .menu-toggle span::after { position: absolute; top: 6px; }
body.menu-open .menu-toggle span { background: transparent; }
body.menu-open .menu-toggle span::before { top: 0; transform: rotate(45deg); }
body.menu-open .menu-toggle span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 1080px) {
  .nav-links, .nav-actions .btn { display: none; }
  .menu-toggle { display: grid; }
}

/* scroll progress */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; z-index: 110; background: var(--grad-brand); transition: width .1s linear; }

/* ---------- Mobile drawer ---------- */
.mobile-drawer {
  position: fixed; inset: 0; z-index: 99; background: rgba(14,10,31,.98); backdrop-filter: blur(10px);
  padding: calc(var(--header-h) + 1rem) var(--gutter) 2rem; overflow-y: auto;
  opacity: 0; visibility: hidden; transition: opacity .35s var(--ease); transform: translateY(-6px);
}
body.menu-open .mobile-drawer { opacity: 1; visibility: visible; transform: none; }
.m-group { border-bottom: 1px solid var(--border); }
.m-group > a, .m-group > button { display: flex; justify-content: space-between; align-items: center; width: 100%; padding: 1rem 0; font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; }
.m-sub { display: none; padding-bottom: .8rem; }
.m-group.open .m-sub { display: block; }
.m-sub a { display: block; padding: .55rem 0 .55rem 1rem; color: var(--text-muted); }
.m-sub a:hover { color: var(--hl); }
.m-group.open > button .chev { transform: rotate(180deg); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: linear-gradient(180deg, transparent, rgba(14,10,31,.6)); padding-top: clamp(56px, 7vw, 88px); margin-top: clamp(48px,6vw,80px); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 3rem; }
.footer-grid h5 { font-family: var(--font-display); font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text); margin-bottom: 1.1rem; }
.footer-grid a { display: block; color: var(--text-muted); padding: .35rem 0; font-size: .95rem; transition: color .25s; }
.footer-grid a:hover { color: var(--hl); }
.footer-brand p { color: var(--text-muted); font-size: .95rem; margin-top: .8rem; max-width: 280px; }
.footer-kin { margin-top: 1rem; font-size: .82rem; color: var(--text-dim); }
.footer-kin a { display: inline; color: var(--violet-light); padding: 0; }
.newsletter { display: flex; gap: .5rem; margin-top: 1rem; max-width: 340px; }
.newsletter input { flex: 1; padding: .8rem 1rem; border-radius: var(--pill); background: var(--surface); border: 1px solid var(--border); color: var(--text); }
.newsletter input:focus { outline: none; border-color: var(--violet); }
.footer-bottom { border-top: 1px solid var(--border); padding: 1.6rem 0; display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; color: var(--text-dim); font-size: .9rem; }
.footer-bottom .legal { display: flex; gap: 1.4rem; }
@media (max-width: 800px){ .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; border-radius: var(--radius-xl); overflow: hidden; text-align: center;
  padding: clamp(3rem, 6vw, 5rem) clamp(1.5rem, 5vw, 4rem);
  background: linear-gradient(135deg, rgba(139,92,246,.14), rgba(251,191,36,.10));
  border: 1px solid var(--border-strong);
}
.cta-band::before { content:""; position:absolute; inset:0; background: radial-gradient(600px 300px at 50% -20%, rgba(124,58,237,.34), transparent 70%); }
.cta-band > * { position: relative; }

/* ---------- New animation primitives (Hub-specific) ---------- */
/* clip-path line reveal for headings */
.clip-reveal { display: inline-block; }
.clip-reveal .line { display: block; overflow: hidden; }
.clip-reveal .line > span { display: block; }

/* auto-scrolling marquee (skills 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: flex; gap: 1rem; width: max-content; will-change: transform; }
.marquee-chip {
  display: inline-flex; align-items: center; gap: .5rem; white-space: nowrap;
  padding: .7rem 1.3rem; border-radius: var(--pill);
  background: var(--surface); border: 1px solid var(--border);
  font-family: var(--font-display); font-weight: 600; font-size: 1rem; color: var(--text-soft);
}
.marquee-chip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--grad-gold); }

/* reveal base (GSAP toggles) */
[data-reveal] { opacity: 0; }
.no-js [data-reveal] { opacity: 1; }

/* ---------- Assessment quiz ---------- */
.quiz-progress { height: 6px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.quiz-progress-bar { height: 100%; background: var(--grad-brand); border-radius: 99px; transition: width .5s var(--ease); }
.quiz-options { display: grid; gap: .8rem; grid-auto-rows: 1fr; }
.quiz-option {
  display: flex; align-items: center; gap: .9rem; text-align: left;
  padding: 1.1rem 1.2rem; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-soft);
  font-size: 1.02rem; transition: transform .25s var(--ease), border-color .25s, background .25s, color .25s;
}
.quiz-option:hover { transform: translateX(5px); border-color: var(--violet); color: #fff; background: rgba(139,92,246,.1); }
.quiz-option.selected { border-color: var(--hl); background: rgba(251,191,36,.12); color: #fff; }
.quiz-bullet {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; background: rgba(139,92,246,.16); color: var(--violet-light);
}
.score-row { margin-bottom: 1.1rem; }
.score-row:last-child { margin-bottom: 0; }
.score-head { display: flex; justify-content: space-between; margin-bottom: .4rem; font-size: .95rem; color: var(--text-soft); }
.score-pct { color: var(--text-muted); font-family: var(--font-display); font-weight: 600; }
.score-pct.is-primary { color: var(--hl); }
.score-track { height: 10px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.score-fill { height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg,#6366f1,#8b5cf6); }
.score-fill.is-primary { background: var(--grad-gold); }

/* ---------- Accessibility ---------- */
:focus-visible { outline: 2px solid var(--violet-light); 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: calc(var(--header-h) + 16px); }
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--surface-2); 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; }

/* utility */
.full { width: 100%; }
.hidden { display: none; }
.relative { position: relative; }
.center-x { margin-inline: auto; }
.maxw-prose { max-width: var(--maxw-prose); }

/* ============================================================
   Data charts (charts.js) — theme-aware inline SVG + KPI grids
   ============================================================ */
.chart {
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(139,92,246,.07), transparent 60%),
    var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.4vw, 1.7rem);
  box-shadow: 0 14px 40px -26px rgba(0,0,0,.7);
}
.chart-head { margin-bottom: .9rem; }
.chart-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.28rem); line-height: 1.25; color: var(--text);
}
.chart-sub { color: var(--text-muted); font-size: .92rem; margin-top: .3rem; }
.chart-canvas { width: 100%; }
.chart-canvas svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart-legend {
  display: flex; flex-wrap: wrap; gap: .5rem 1.3rem;
  margin-top: 1rem; justify-content: center;
}
.chart-key { display: inline-flex; align-items: center; gap: .5rem; color: var(--text-soft); font-size: .9rem; }
.chart-key i { width: 13px; height: 13px; border-radius: 4px; flex: none; }
.chart-source { color: var(--text-dim); font-size: .8rem; margin-top: .9rem; font-style: italic; }
.chart-error { color: var(--text-muted); font-size: .9rem; text-align: center; padding: 2rem; }

/* tooltip */
.chart-tip {
  position: fixed; z-index: 300; pointer-events: none;
  transform: translate(-50%, calc(-100% - 14px));
  background: var(--surface-2); border: 1px solid var(--border-strong);
  color: var(--text); padding: .5rem .7rem; border-radius: 10px;
  font-size: .82rem; line-height: 1.45; box-shadow: var(--glow-violet);
  opacity: 0; transition: opacity .15s var(--ease); max-width: 240px;
}
.chart-tip.on { opacity: 1; }
.chart-tip .t { display: inline-flex; align-items: center; gap: .45rem; color: var(--text-soft); }
.chart-tip .t i { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.chart-tip b { display: block; margin-top: .15rem; font-family: var(--font-display); font-size: 1rem; }

/* KPI grid */
.chart-kpi { background: transparent; border: 0; box-shadow: none; padding: 0; }
.chart-kpi .chart-head { text-align: center; }
.kpi-grid { display: grid; grid-template-columns: repeat(var(--kpi-cols, 4), 1fr); gap: clamp(16px, 2.4vw, 26px); }
.kpi-card {
  position: relative; text-align: center; padding: 1.6rem 1.2rem;
  background:
    radial-gradient(120% 120% at 50% 0%, color-mix(in srgb, var(--kpi-accent) 16%, transparent), transparent 65%),
    var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.kpi-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--kpi-accent); opacity: .9; }
.kpi-num {
  display: block; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.3rem, 4.4vw, 3.2rem); line-height: 1;
  color: var(--kpi-accent, var(--violet-light));
}
.kpi-label { display: block; margin-top: .7rem; color: var(--text); font-weight: 600; font-size: 1rem; }
.kpi-sub { display: block; margin-top: .35rem; color: var(--text-muted); font-size: .86rem; line-height: 1.5; }

/* ---- scroll-in animation (driven by .is-visible on .chart) ---- */
.chart .c-bar { transform-box: fill-box; transform-origin: bottom center; transform: scaleY(0); transition: transform .9s var(--ease); }
.chart.is-visible .c-bar { transform: scaleY(1); }
.chart .c-bar-h { transform-box: fill-box; transform-origin: left center; transform: scaleX(0); transition: transform .9s var(--ease); }
.chart.is-visible .c-bar-h { transform: scaleX(1); }
.chart .c-line { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.3s var(--ease); }
.chart.is-visible .c-line { stroke-dashoffset: 0; }
.chart .c-gauge { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.2s var(--ease); }
.chart.is-visible .c-gauge { stroke-dashoffset: 0; }
.chart .c-area { opacity: 0; transition: opacity 1s var(--ease) .25s; }
.chart.is-visible .c-area { opacity: 1; }
.chart .c-seg { stroke-dasharray: 0 var(--circ); transition: stroke-dasharray 1s var(--ease); }
.chart.is-visible .c-seg { stroke-dasharray: var(--len) var(--circ); }
.chart .c-radar { transform: scale(.55); opacity: 0; transition: transform .9s var(--ease), opacity .7s var(--ease); }
.chart.is-visible .c-radar { transform: scale(1); opacity: 1; }
.chart .c-dot, .chart .c-fade { opacity: 0; transition: opacity .5s var(--ease); }
.chart.is-visible .c-dot, .chart.is-visible .c-fade { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  .chart .c-bar, .chart .c-bar-h { transform: none; }
  .chart .c-line, .chart .c-gauge { stroke-dashoffset: 0; }
  .chart .c-area, .chart .c-dot, .chart .c-fade { opacity: 1; }
  .chart .c-seg { stroke-dasharray: var(--len) var(--circ); }
  .chart .c-radar { transform: none; opacity: 1; }
  .chart *, .chart-tip { transition: none !important; }
}

@media (max-width: 720px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 460px) {
  .kpi-grid { grid-template-columns: 1fr; }
}
