/* ============================================================
   Kevin_Amen_Clinic — Brain Health v2
   LOCKED brand system (spec Section 2) — frost / glacier / cobalt
   Inter (UI/headings/body) + JetBrains Mono (numerals/scores)
   ============================================================ */

:root {
  --frost-white:#F4F9FF;
  --ice-pale:#E4EEF8;
  --glacier-blue:#A9C9E8;
  --arctic-cyan:#6FB6D9;
  --deep-cobalt:#0B2545;
  --slate-ink:#1E3A5F;
  --silver-mist:#CFDDEB;
  --pulse-cyan:#00E1FF;
  --pure-white:#FFFFFF;
  --shadow-blue:rgba(11,37,69,0.08);

  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','SF Mono',Consolas,monospace;

  --maxw:1140px;
  --pad-y:5rem;
  --gap:1.75rem;
  --nav-h:60px;
  --radius:18px;
  --ease:0.22s ease;
}

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

html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body {
  font-family:var(--font-body);
  font-weight:400;
  font-size:1rem;
  line-height:1.65;
  color:var(--slate-ink);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(111,182,217,0.16), transparent 60%),
    radial-gradient(900px 600px at -10% 20%, rgba(169,201,232,0.18), transparent 55%),
    linear-gradient(180deg, var(--frost-white) 0%, var(--ice-pale) 100%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding-top:var(--nav-h);
}

::selection { background:var(--pulse-cyan); color:var(--deep-cobalt); }

h1,h2,h3,h4 {
  font-family:var(--font-body);
  font-weight:700;
  letter-spacing:-0.02em;
  color:var(--deep-cobalt);
  line-height:1.14;
}

a { color:var(--slate-ink); text-decoration:none; border-bottom:1px solid var(--glacier-blue); transition:color var(--ease),border-color var(--ease); }
a:hover { color:var(--arctic-cyan); border-color:var(--arctic-cyan); }
strong { color:var(--deep-cobalt); font-weight:700; }
em { color:var(--slate-ink); }

img,video,table,pre,svg { max-width:100%; }

.mono { font-family:var(--font-mono); }

/* ---------- Top nav ---------- */
#top-nav {
  position:fixed; top:0; left:0; right:0; z-index:1100; height:var(--nav-h);
  background:rgba(244,249,255,0.82);
  -webkit-backdrop-filter:blur(16px); backdrop-filter:blur(16px);
  border-bottom:1px solid var(--silver-mist);
}
.nav-inner {
  max-width:var(--maxw); margin:0 auto; height:100%; padding:0 24px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.wordmark {
  display:inline-flex; align-items:center; gap:8px; font-family:var(--font-mono);
  font-weight:600; font-size:16px; color:var(--deep-cobalt); border:none;
}
.wordmark [data-lucide]{ width:20px; height:20px; color:var(--arctic-cyan); }
.nav-tag {
  font-family:var(--font-mono); font-size:11px; letter-spacing:0.1em;
  text-transform:uppercase; color:var(--slate-ink); border:none;
}

/* ---------- Progress bar ---------- */
#progress-bar {
  position:fixed; top:var(--nav-h); left:0; height:3px; width:0%;
  background:var(--pulse-cyan); z-index:1000; transition:width 80ms linear;
  box-shadow:0 0 8px rgba(0,225,255,0.6);
}

/* ---------- Dot nav ---------- */
#dot-nav {
  position:fixed; right:22px; top:50%; transform:translateY(-50%); z-index:900;
  display:flex; flex-direction:column; gap:14px;
}
#dot-nav button {
  width:11px; height:11px; border-radius:50%; border:1.5px solid var(--glacier-blue);
  background:rgba(255,255,255,0.6); cursor:pointer; padding:0; position:relative;
  transition:all var(--ease);
}
#dot-nav button:hover { border-color:var(--arctic-cyan); transform:scale(1.2); }
#dot-nav button.active { background:var(--pulse-cyan); border-color:var(--arctic-cyan); box-shadow:0 0 8px rgba(0,225,255,0.7); }
#dot-nav button .dot-label {
  position:absolute; right:22px; top:50%; transform:translateY(-50%); white-space:nowrap;
  font-family:var(--font-mono); font-size:10px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--deep-cobalt); background:var(--pure-white); padding:4px 9px; border-radius:6px;
  border:1px solid var(--silver-mist); box-shadow:0 4px 14px var(--shadow-blue);
  opacity:0; pointer-events:none; transition:opacity var(--ease);
}
#dot-nav button:hover .dot-label { opacity:1; }

/* ---------- Sections ---------- */
section {
  min-height:90vh; padding:var(--pad-y) 24px; display:flex; flex-direction:column;
  justify-content:center; position:relative;
}
.container { max-width:var(--maxw); margin:0 auto; width:100%; }

.eyebrow {
  display:inline-flex; align-items:center; gap:12px; font-family:var(--font-mono);
  font-weight:600; font-size:11px; letter-spacing:0.16em; text-transform:uppercase;
  color:var(--arctic-cyan); margin-bottom:1.25rem;
}
.eyebrow::before { content:""; display:inline-block; width:2rem; height:2px; background:var(--pulse-cyan); flex-shrink:0; }

.section-title, section h2 { font-size:clamp(1.75rem,3.6vw,2.6rem); margin-bottom:12px; }
.subhead,.intro-line,.sub-line {
  font-size:1.1rem; font-weight:400; line-height:1.7; color:var(--slate-ink);
  max-width:660px; margin-bottom:2.25rem;
}

/* ---------- Frosted-glass card ---------- */
.card {
  background:rgba(255,255,255,0.75);
  -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border:1px solid var(--silver-mist); border-radius:18px;
  box-shadow:0 4px 24px var(--shadow-blue); padding:1.9rem;
  transition:transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.card:hover { transform:translateY(-3px); box-shadow:0 10px 34px var(--shadow-blue); border-color:var(--glacier-blue); }
.card h3 { font-size:clamp(1.05rem,2vw,1.3rem); margin-bottom:14px; display:flex; align-items:center; gap:10px; }
.card h4 { font-size:0.72rem; margin:18px 0 8px; color:var(--arctic-cyan); text-transform:uppercase; letter-spacing:0.12em; font-family:var(--font-mono); font-weight:600; }
.card ul { list-style:none; }
.card ul li { padding:6px 0 6px 20px; position:relative; color:var(--slate-ink); font-size:0.94rem; }
.card ul li::before { content:""; position:absolute; left:0; top:13px; width:6px; height:6px; border-radius:50%; background:var(--arctic-cyan); }
.card p { margin-bottom:10px; color:var(--slate-ink); font-size:0.94rem; }

.grid { display:grid; gap:var(--gap); }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-3 { grid-template-columns:repeat(3,1fr); }

.icon-wrap {
  display:inline-flex; align-items:center; justify-content:center; width:46px; height:46px;
  border-radius:14px; background:rgba(111,182,217,0.14); border:1px solid var(--glacier-blue);
  margin-bottom:16px;
}
[data-lucide] { stroke-width:1.6px; color:var(--arctic-cyan); }
.card h3 [data-lucide] { width:20px; height:20px; }
.icon-wrap [data-lucide] { width:22px; height:22px; }

/* ---------- Buttons ---------- */
.btn {
  display:inline-flex; align-items:center; gap:8px; background:var(--deep-cobalt);
  color:var(--frost-white); padding:12px 20px; border-radius:12px; font-weight:600;
  font-size:14px; border:2px solid var(--deep-cobalt); cursor:pointer; border-bottom:2px solid var(--deep-cobalt);
  transition:background var(--ease), transform var(--ease), box-shadow var(--ease);
}
.btn [data-lucide]{ color:var(--frost-white); width:16px; height:16px; }
.btn:hover { background:var(--slate-ink); color:var(--frost-white); transform:translateY(-2px); box-shadow:0 8px 20px var(--shadow-blue); border-color:var(--slate-ink); }
.btn-secondary { background:transparent; color:var(--deep-cobalt); border:1px solid var(--glacier-blue); }
.btn-secondary [data-lucide]{ color:var(--arctic-cyan); }
.btn-secondary:hover { background:rgba(255,255,255,0.6); color:var(--deep-cobalt); border-color:var(--arctic-cyan); }
.btn-pill {
  display:inline-flex; align-items:center; gap:8px; background:rgba(111,182,217,0.12);
  color:var(--slate-ink); border:1px solid var(--glacier-blue); padding:8px 16px;
  border-radius:999px; font-size:13px; font-weight:600;
}
.btn-pill [data-lucide]{ width:15px; height:15px; }
.btn-pill:hover { color:var(--deep-cobalt); border-color:var(--arctic-cyan); }
.cta-row { display:flex; gap:14px; flex-wrap:wrap; margin-top:8px; }

/* ---------- Hero ---------- */
#hero { position:relative; overflow:hidden; text-align:left; }
#hero .hero-panel { padding:40px 0; max-width:900px; }
#hero h1 { font-size:clamp(2.5rem,6vw,4.4rem); letter-spacing:-0.035em; margin-bottom:1.1rem; max-width:20ch; }
#hero .subhead { font-size:1.15rem; max-width:640px; }
.hero-orb {
  position:absolute; top:-30%; right:-12%; width:620px; height:620px;
  background:radial-gradient(circle, rgba(0,225,255,0.10) 0%, rgba(111,182,217,0.10) 40%, transparent 70%);
  border-radius:9999px; pointer-events:none; z-index:0;
}
.hero-neural { position:absolute; inset:0; opacity:0.10; z-index:0; pointer-events:none; }
#hero .container { position:relative; z-index:1; }
.scroll-hint {
  position:absolute; right:36px; bottom:34px; font-family:var(--font-mono); font-size:11px;
  letter-spacing:0.08em; text-transform:uppercase; color:var(--arctic-cyan);
  display:flex; align-items:center; gap:8px; z-index:1;
}
.scroll-hint [data-lucide]{ width:14px; height:14px; }
.scroll-hint.hide { opacity:0; transition:opacity 800ms ease; }

/* ---------- Stat / percentile chips ---------- */
.stat-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:var(--gap); }
.stat {
  background:rgba(255,255,255,0.75); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border:1px solid var(--silver-mist); border-radius:18px; box-shadow:0 4px 24px var(--shadow-blue);
  padding:1.6rem; text-align:center; transition:transform var(--ease);
}
.stat:hover { transform:translateY(-3px); }
.stat .val { font-family:var(--font-mono); font-weight:600; font-size:2.6rem; color:var(--deep-cobalt); line-height:1; }
.stat .val .suffix { font-size:1rem; color:var(--arctic-cyan); vertical-align:super; margin-left:2px; }
.stat .label { margin-top:10px; font-size:0.9rem; font-weight:600; color:var(--slate-ink); }
.stat.edge .val { color:var(--slate-ink); }

/* ---------- Screener line ---------- */
.screen-line { display:flex; flex-wrap:wrap; gap:10px; margin:6px 0 20px; }
.screen-chip {
  font-family:var(--font-mono); font-size:0.82rem; background:rgba(111,182,217,0.12);
  border:1px solid var(--glacier-blue); color:var(--deep-cobalt); padding:6px 12px; border-radius:999px;
}
.screen-chip b { color:var(--arctic-cyan); }
.transition-line { font-size:1.2rem; font-weight:600; color:var(--deep-cobalt); max-width:640px; margin-top:8px; }

/* ---------- Scan cards (My Brain, Uncovered) ---------- */
.scan-grid { display:grid; grid-template-columns:1fr; gap:2.25rem; }
.scan-card { padding:1.6rem; }
.scan-head { display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-bottom:14px; }
.scan-head h3 { margin-bottom:0; }
.scan-stage {
  position:relative; width:100%; max-width:620px; margin:0 auto; aspect-ratio:878 / 901;
  background:#000; border-radius:14px; overflow:hidden; border:1px solid var(--silver-mist);
}
.scan-stage img { display:block; width:100%; height:100%; object-fit:contain; }
.scan-stage .overlay {
  position:absolute; inset:0; width:100%; height:100%; opacity:0;
  transition:opacity 0.45s ease; pointer-events:none;
}
.scan-card.annotated .scan-stage .overlay { opacity:1; }
.toggle {
  display:inline-flex; align-items:center; gap:0; border:1px solid var(--glacier-blue);
  border-radius:999px; overflow:hidden; background:rgba(255,255,255,0.6);
}
.toggle button {
  font-family:var(--font-mono); font-size:12px; letter-spacing:0.04em; padding:7px 16px;
  border:none; background:transparent; color:var(--slate-ink); cursor:pointer; transition:all var(--ease);
}
.toggle button.on { background:var(--deep-cobalt); color:var(--frost-white); }
.scan-caption { font-style:italic; color:var(--slate-ink); margin:16px 0 4px; font-size:0.95rem; }
.finding-list { list-style:none; margin-top:12px; }
.finding-list li {
  padding:12px 0; border-top:1px solid var(--silver-mist); font-size:0.94rem; color:var(--slate-ink);
}
.finding-list li:first-child { border-top:none; }
.finding-list .region { font-weight:700; color:var(--deep-cobalt); }
.finding-list .tech { font-family:var(--font-mono); font-size:0.82rem; color:var(--arctic-cyan); display:block; margin:3px 0; }
.finding-list .plain { color:var(--slate-ink); }

/* ---------- The Data (corroboration rows) ---------- */
.data-row {
  display:grid; grid-template-columns:auto 1fr; gap:18px; align-items:start;
  padding:16px 0; border-top:1px solid var(--silver-mist);
}
.data-row:first-child { border-top:none; }
.data-row .score { font-family:var(--font-mono); font-weight:600; font-size:1.5rem; color:var(--deep-cobalt); white-space:nowrap; }
.data-row .score small { display:block; font-size:0.7rem; color:var(--arctic-cyan); letter-spacing:0.06em; }
.data-row .maps { font-size:0.94rem; }
.data-row .maps .tie { color:var(--arctic-cyan); font-weight:600; }

/* ---------- Video embeds ---------- */
.video-wrap { position:relative; width:100%; padding-top:56.25%; border-radius:14px; overflow:hidden; border:1px solid var(--silver-mist); box-shadow:0 4px 24px var(--shadow-blue); }
.video-wrap iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x:auto; margin-bottom:26px; }
.stack-title { font-size:11px; text-transform:uppercase; letter-spacing:0.14em; color:var(--arctic-cyan); margin:26px 0 12px; font-family:var(--font-mono); font-weight:600; }
table.stack {
  width:100%; border-collapse:collapse; background:rgba(255,255,255,0.7);
  border:1px solid var(--silver-mist); border-radius:14px; overflow:hidden;
}
table.stack th, table.stack td { text-align:left; padding:13px 18px; border-bottom:1px solid var(--silver-mist); font-size:0.92rem; color:var(--slate-ink); }
table.stack th { background:rgba(169,201,232,0.25); color:var(--deep-cobalt); font-weight:700; letter-spacing:0.02em; font-size:0.78rem; text-transform:uppercase; }
table.stack td:nth-child(2) { font-family:var(--font-mono); color:var(--arctic-cyan); font-size:0.82rem; }
table.stack tr:last-child td { border-bottom:none; }
table.stack tr:hover td { background:rgba(111,182,217,0.08); }

.note-card, .warning-card {
  border-left:3px solid var(--arctic-cyan); padding:16px 20px; border-radius:0 12px 12px 0;
  background:rgba(111,182,217,0.10); border-top:1px solid var(--silver-mist);
  border-right:1px solid var(--silver-mist); border-bottom:1px solid var(--silver-mist);
  margin:18px 0; font-size:0.92rem; color:var(--slate-ink);
}
.warning-card { border-left-color:var(--deep-cobalt); }

/* ---------- Stat card (MOVE) ---------- */
.stat-card { text-align:center; padding:44px 30px; }
.formula {
  font-family:var(--font-mono); font-weight:600; font-size:clamp(1.15rem,3vw,1.9rem);
  color:var(--deep-cobalt); background:rgba(111,182,217,0.12); border:1px solid var(--glacier-blue);
  border-radius:14px; padding:24px; display:inline-block; margin-bottom:26px; letter-spacing:0.02em;
}

/* ---------- Timeline (Daily Flow) ---------- */
.timeline { position:relative; margin-top:20px; padding-left:28px; }
.timeline::before { content:""; position:absolute; left:6px; top:0; bottom:0; width:2px; background:var(--glacier-blue); }
.timeline-row { position:relative; display:grid; grid-template-columns:130px 1fr; gap:20px; margin-bottom:16px; align-items:start; }
.timeline-row::before { content:""; position:absolute; left:-28px; top:22px; width:11px; height:11px; border-radius:50%; background:var(--pulse-cyan); border:2px solid var(--frost-white); box-shadow:0 0 6px rgba(0,225,255,0.5); }
.timeline-time { font-family:var(--font-mono); font-weight:600; color:var(--arctic-cyan); font-size:13px; padding-top:16px; }
.timeline-card { padding:16px 20px; }
.timeline-card .block-label { font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--arctic-cyan); font-family:var(--font-mono); margin-bottom:4px; font-weight:600; }

/* ---------- Pillar cards (Takeaways) ---------- */
.pillar-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gap); }
.pillar-card ol { list-style:none; counter-reset:tk; }
.pillar-card ol li { counter-increment:tk; padding:10px 0 10px 34px; position:relative; font-size:0.9rem; color:var(--slate-ink); border-top:1px solid var(--silver-mist); }
.pillar-card ol li:first-child { border-top:none; }
.pillar-card ol li::before {
  content:counter(tk); position:absolute; left:0; top:10px; width:24px; height:24px;
  border-radius:50%; background:rgba(111,182,217,0.16); border:1px solid var(--glacier-blue);
  color:var(--deep-cobalt); font-family:var(--font-mono); font-size:12px; font-weight:600;
  display:flex; align-items:center; justify-content:center;
}
.pillar-card ol li b { color:var(--deep-cobalt); }
.takeaway-cta { text-align:center; margin-top:32px; font-size:1.25rem; font-weight:600; color:var(--deep-cobalt); }

/* ---------- Resource grid ---------- */
.resource-card { display:flex; align-items:center; gap:14px; padding:18px 20px; }
.resource-card .icon-wrap { margin-bottom:0; flex-shrink:0; }
.resource-card .r-label { font-weight:600; color:var(--deep-cobalt); font-size:15px; }
.resource-card .r-link { font-size:12px; color:var(--arctic-cyan); word-break:break-all; font-family:var(--font-mono); }

/* ---------- Final CTA ---------- */
.final-cta { background:rgba(11,37,69,0.04); border:1px solid var(--glacier-blue); border-radius:18px; padding:52px; text-align:center; margin-top:44px; }
.final-cta p { color:var(--slate-ink); margin:12px auto 26px; font-size:1.1rem; max-width:520px; }

/* ---------- Footer ---------- */
footer { padding:44px 24px; background:rgba(11,37,69,0.03); border-top:1px solid var(--silver-mist); }
footer .container { display:flex; flex-direction:column; gap:16px; }
.foot-brand { font-family:var(--font-mono); font-weight:600; color:var(--deep-cobalt); letter-spacing:0.04em; }
.foot-madeline { font-family:var(--font-mono); font-size:12px; color:var(--arctic-cyan); letter-spacing:0.06em; }
.disclaimer { font-size:12.5px; line-height:1.7; color:var(--slate-ink); max-width:900px; }
.disclaimer strong { color:var(--deep-cobalt); }

/* ---------- Fade-in ---------- */
.fade-in { opacity:0; transform:translateY(16px); transition:opacity 0.5s ease, transform 0.5s ease; }
.fade-in.visible { opacity:1; transform:translateY(0); }

/* ---------- Presentation mode ---------- */
body.presentation-mode #dot-nav { opacity:0.35; }
body.presentation-mode section { scroll-snap-align:start; }
body.presentation-mode { scroll-snap-type:y proximity; }
.pmode-badge {
  position:fixed; bottom:20px; left:20px; z-index:950; background:var(--pure-white);
  color:var(--arctic-cyan); border:1px solid var(--glacier-blue); font-family:var(--font-mono);
  font-size:11px; letter-spacing:0.1em; padding:8px 14px; border-radius:999px; display:none;
  box-shadow:0 4px 14px var(--shadow-blue);
}
body.presentation-mode .pmode-badge { display:block; }

/* ---------- Responsive ---------- */
@media (max-width:900px) {
  #dot-nav { display:none; }
  .pillar-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:768px) {
  :root { --pad-y:3.5rem; }
  .grid-3 { grid-template-columns:repeat(2,1fr); }
  #hero .hero-panel { padding:28px 0; }
  .scroll-hint { display:none; }
  .final-cta { padding:36px 22px; }
  .nav-tag { display:none; }
}
@media (max-width:560px) {
  .grid-2, .grid-3, .pillar-grid { grid-template-columns:1fr; }
  .timeline-row { grid-template-columns:96px 1fr; gap:12px; }
  section { padding:var(--pad-y) 16px; }
  .data-row { grid-template-columns:1fr; }
}