/* ============================================================================
   THALYN — shared design system
   Celtic-mythic. Teal + gold on near-black. Cinzel display / Crimson Pro body.
   Used by every page. Page-specific styles, if any, go in a small <style> block.
   ============================================================================ */

/* ── TOKENS ──────────────────────────────────────────────────────────────── */
:root{
  --root-bg:#0B1515; --panel:#0E2E2A; --panel-light:#183830;
  --border:rgba(212,136,10,0.18); --border-subtle:rgba(0,168,160,0.12);
  --gold:#D4880A; --gold-bright:#E8990E; --gold-dim:rgba(212,136,10,0.7);
  /* Gilded metallic gold — matches the app's ThalynGild ramp. --gild = full
     metallic (dark→gold→white highlight→gold→dark) for FILLS; --gild-soft =
     gentler ramp for background-clip TEXT. Do not alter the stops. */
  --gild:      linear-gradient(135deg,#8A5E08 0%,#D4880A 22%,#F0C862 46%,#FFF6D6 54%,#E8C66A 62%,#C08A16 80%,#7A5406 100%);
  --gild-soft: linear-gradient(135deg,#B8860B,#E8C66A 45%,#FFF3C4 55%,#D4880A);
  --gold-base: #E8C66A;   /* flat gold for small accents / dots / thin borders */
  --gild-ink:  #3A2704;   /* text colour that sits ON a gild fill */
  --green:     #55AE86;   /* celtic green — the calm secondary (AA-normal on every ground) */
  --teal:#00A8A0; --teal-dim:rgba(0,168,160,0.72);
  --parchment:#D9CBA8; --parchment-dim:rgba(217,203,168,0.8);
  --text-bright:#EDE5D0;
  --font-display:'Cinzel',Georgia,serif;
  --font-body:'Crimson Pro',Georgia,serif;
  --maxw:1100px;
  --nav-h:64px;
}

/* ── RESET ───────────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--root-bg); color:var(--parchment);
  font-family:var(--font-body); font-size:1.05rem; line-height:1.7;
  min-height:100vh; overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;}

/* ── ACCESSIBILITY ───────────────────────────────────────────────────────── */
.skip-link{
  position:fixed; top:-100px; left:1rem; z-index:1000;
  background:var(--gold); color:#0B1515; padding:0.6rem 1.1rem;
  font-family:var(--font-display); font-size:0.75rem; letter-spacing:0.1em;
  text-transform:uppercase; text-decoration:none; transition:top 0.2s;
}
.skip-link:focus{top:1rem;}

/* One visible focus treatment for every interactive element. */
a:focus-visible,button:focus-visible,[tabindex]:focus-visible,
.btn:focus-visible,.door:focus-visible,.pill:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
  border-radius:2px;
}

/* ── LAYOUT HELPERS ──────────────────────────────────────────────────────── */
.wrap{max-width:var(--maxw);margin-inline:auto;}
.divider{width:100%;height:1px;background:linear-gradient(to right,transparent,var(--border),transparent);}
.eyebrow{
  font-family:var(--font-display); font-size:0.68rem; letter-spacing:0.22em;
  text-transform:uppercase; color:var(--teal-dim); display:block;
}
.gaelic{font-family:var(--font-display);letter-spacing:0.22em;color:rgba(0,168,160,0.35);text-transform:uppercase;}

/* ── NAV ─────────────────────────────────────────────────────────────────── */
.site-nav{
  position:fixed; inset:0 0 auto 0; z-index:100;
  display:flex; align-items:center; justify-content:space-between; gap:1.5rem;
  padding:0 2.5rem; height:var(--nav-h);
  background:rgba(11,21,21,0.92); backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-subtle);
}
.nav-logo{font-family:var(--font-display);font-size:1.15rem;font-weight:700;background:var(--gild-soft);-webkit-background-clip:text;background-clip:text;color:transparent;text-decoration:none;letter-spacing:0.08em;white-space:nowrap;}
.nav-logo sup{font-size:0.5em;vertical-align:super;color:var(--teal);}
.nav-links{display:flex;gap:1.6rem;list-style:none;align-items:center;margin-left:auto;}
.nav-links a{
  font-family:var(--font-display); font-size:0.72rem; letter-spacing:0.1em;
  text-transform:uppercase; color:var(--parchment-dim); text-decoration:none;
  transition:color 0.2s; white-space:nowrap;
}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--gold);}
.nav-actions{display:flex;gap:0.75rem;align-items:center;}
.nav-toggle{
  display:none; background:none; border:1px solid var(--border); color:var(--parchment);
  width:42px; height:38px; cursor:pointer; align-items:center; justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;}

/* ── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn{
  font-family:var(--font-display); font-size:0.75rem; font-weight:600;
  letter-spacing:0.14em; text-transform:uppercase; text-decoration:none;
  padding:0.9rem 2.1rem; cursor:pointer; display:inline-block; border:1px solid transparent;
  transition:background 0.2s,box-shadow 0.2s,border-color 0.2s,color 0.2s; white-space:nowrap;
}
/* Primary CTA — gilded metallic fill, bevel, and a slow moving sheen (§2a). */
.btn-primary{
  position:relative; overflow:hidden;
  color:var(--gild-ink); background:var(--gild);
  text-shadow:0 1px 0 rgba(255,255,255,.25);
  box-shadow:0 2px 10px rgba(212,136,10,.35), inset 0 1px 0 rgba(255,255,255,.45);
}
.btn-primary::after{           /* the moving reflection */
  content:""; position:absolute; top:0; left:-60%; width:40%; height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-18deg); animation:sheen 3.2s ease-in-out infinite; pointer-events:none;
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 3px 18px rgba(212,136,10,.5), inset 0 1px 0 rgba(255,255,255,.5);}
/* Secondary / ghost — green is the calm counterpoint, never competes (§4). */
.btn-secondary,.btn-ghost{color:var(--green);background:transparent;border-color:var(--green);}
.btn-secondary:hover,.btn-ghost:hover{border-color:#62C091;color:#62C091;}
.btn-sm{padding:0.6rem 1.4rem;font-size:0.68rem;}
.cta-row{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;}
@keyframes sheen{0%,60%{left:-60%}100%{left:130%}}

/* ── HERO ────────────────────────────────────────────────────────────────── */
.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:8rem 2rem 5rem;position:relative;overflow:hidden;}
.hero::before{content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 65% 55% at 50% 42%,rgba(0,168,160,0.07),transparent 70%),
             radial-gradient(ellipse 40% 30% at 50% 65%,rgba(212,136,10,0.04),transparent 60%);}
.hero-gaelic{font-size:0.62rem;letter-spacing:0.28em;margin-bottom:2rem;}
.hero-myth{font-family:var(--font-display);font-size:clamp(2rem,5.5vw,4.4rem);font-weight:700;line-height:1.1;color:var(--text-bright);letter-spacing:0.01em;}
.hero-myth-next{display:block;background:var(--gild-soft);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:2.2rem;}
.hero-threshold{font-family:var(--font-body);font-size:clamp(1rem,2.2vw,1.25rem);font-weight:300;font-style:italic;color:var(--parchment-dim);max-width:580px;margin:0 auto 0.6rem;line-height:1.5;}

/* Typewriter — CLS-safe. A hidden ghost of the longest phrase reserves the box;
   the live line is overlaid in the same grid cell, so nothing below ever shifts. */
.tw-wrap{display:inline-grid;min-height:2rem;margin-bottom:2.8rem;}
.tw-wrap > *{grid-area:1/1;}
.tw-ghost{visibility:hidden;pointer-events:none;user-select:none;}
.tw-target{font-family:var(--font-display);font-size:0.8rem;letter-spacing:0.12em;color:var(--teal);}
.tw-ghost,.tw-target{padding-right:0.6em;} /* room for the caret */
.tw-target::after{content:'|';color:var(--gold);margin-left:1px;animation:tw-blink 0.9s step-end infinite;}
@keyframes tw-blink{0%,100%{opacity:1}50%{opacity:0}}

/* ── CATEGORY STRIP ──────────────────────────────────────────────────────── */
.category-strip{background:var(--panel);padding:2rem;text-align:center;border-block:1px solid var(--border-subtle);}
.category-strip p{font-family:var(--font-display);font-size:0.75rem;letter-spacing:0.12em;text-transform:uppercase;color:var(--teal);opacity:0.9;line-height:2;}
.category-strip strong{color:var(--text-bright);font-weight:600;}

/* ── PROBLEM STRIP ───────────────────────────────────────────────────────── */
.section{padding:5rem 2rem;}
.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5px;background:var(--border-subtle);margin-top:3rem;}
.problem-card{background:var(--panel);padding:2.2rem 1.8rem;}
.problem-quote{font-style:italic;font-weight:300;color:var(--text-bright);line-height:1.55;margin-bottom:1.2rem;padding-bottom:1.2rem;border-bottom:1px solid var(--border-subtle);}
.problem-answer{font-size:0.95rem;font-weight:300;color:var(--parchment-dim);line-height:1.65;}

/* ── AUDIENCE DOORS ──────────────────────────────────────────────────────── */
.doors{padding:4rem 2rem 6rem;}
.doors-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5px;background:var(--border-subtle);border:1px solid var(--border-subtle);margin-top:3rem;}
.doors-grid.is-2x2{grid-template-columns:repeat(2,minmax(0,1fr));}
@media(max-width:680px){.doors-grid.is-2x2{grid-template-columns:1fr;}}
.door{background:var(--panel);padding:2.5rem 2rem;text-decoration:none;display:flex;flex-direction:column;gap:0.75rem;transition:background 0.2s;position:relative;overflow:hidden;}
.door::after{content:'';position:absolute;inset:auto 0 0 0;height:2px;background:var(--gild);transform:scaleX(0);transform-origin:left;transition:transform 0.3s ease;}
.door:hover{background:var(--panel-light);}
.door:hover::after,.door:focus-visible::after{transform:scaleX(1);}
.door-label{font-family:var(--font-display);font-size:0.65rem;letter-spacing:0.18em;text-transform:uppercase;color:var(--teal);}
.door-title{font-family:var(--font-display);font-size:1.15rem;font-weight:600;color:var(--text-bright);line-height:1.3;}
.door-desc{font-size:0.95rem;font-weight:300;color:var(--parchment-dim);line-height:1.6;}
.door-cta{font-family:var(--font-display);font-size:0.65rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--gold);margin-top:auto;padding-top:1rem;}

/* ── MEANING ─────────────────────────────────────────────────────────────── */
.meaning{background:var(--panel);padding:6rem 2rem;}
.meaning-inner{max-width:800px;margin-inline:auto;}
.meaning-inner h2{font-family:var(--font-display);font-size:clamp(1.5rem,3.5vw,2.4rem);font-weight:600;color:var(--text-bright);margin-bottom:2rem;line-height:1.25;}
.meaning-inner p{font-size:1.1rem;font-weight:300;margin-bottom:1.4rem;line-height:1.75;}
.meaning-inner strong{color:var(--text-bright);font-weight:600;}

/* ── CONFIDENCE STRIP ────────────────────────────────────────────────────── */
.confidence{padding:4rem 2rem;border-block:1px solid var(--border-subtle);}
.confidence-inner{max-width:960px;margin-inline:auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;text-align:center;}
.conf-label{font-family:var(--font-display);font-size:0.62rem;letter-spacing:0.16em;text-transform:uppercase;color:var(--teal-dim);margin-bottom:0.5rem;display:block;}
.conf-value{font-family:var(--font-display);font-size:0.95rem;font-weight:600;color:var(--text-bright);line-height:1.4;}
.conf-value a{color:var(--teal-dim);text-decoration:underline;text-underline-offset:2px;}

/* ── MISSION CLOSE ───────────────────────────────────────────────────────── */
.mission{padding:5rem 2rem;text-align:center;background:linear-gradient(180deg,var(--panel),var(--root-bg));}
.mission-statement{font-style:italic;font-weight:300;font-size:clamp(1.1rem,2.5vw,1.55rem);color:var(--text-bright);max-width:700px;margin:0 auto 1rem;line-height:1.55;}
.mission-connected{font-size:0.95rem;font-weight:300;color:var(--parchment-dim);max-width:540px;margin:0 auto 1.8rem;line-height:1.6;}
.mission-gaelic{font-family:var(--font-display);font-size:0.68rem;letter-spacing:0.16em;color:var(--teal-dim);}

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
.site-footer{background:var(--root-bg);border-top:1px solid var(--border-subtle);padding:3rem 2rem 2rem;text-align:center;}
.footer-links{display:flex;flex-wrap:wrap;gap:0.5rem 1.8rem;justify-content:center;margin-bottom:1.5rem;}
.footer-links a{font-family:var(--font-display);font-size:0.68rem;letter-spacing:0.12em;text-transform:uppercase;color:var(--parchment-dim);text-decoration:none;transition:color 0.2s;}
.footer-links a:hover{color:var(--gold);}
.footer-gaelic{font-family:var(--font-display);font-size:0.65rem;letter-spacing:0.16em;color:rgba(0,168,160,0.3);margin-bottom:1rem;display:block;}
.footer-legal{font-size:0.8rem;color:rgba(217,203,168,0.62);line-height:1.6;}

/* ── THALYN MARK ─────────────────────────────────────────────────────────── */
.thalyn-mark{position:fixed;bottom:24px;left:24px;z-index:90;opacity:0.45;transition:opacity 0.4s;}
.thalyn-mark:hover{opacity:0.9;}
.thalyn-mark img{height:64px;filter:drop-shadow(0 0 10px rgba(212,136,10,0.25));}

/* ── EMBER CANVAS ────────────────────────────────────────────────────────── */
#ember-canvas{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;}
main,.site-footer,.thalyn-mark{position:relative;z-index:1;}

/* ── SCROLL REVEAL (only hidden when JS is present, so no-JS shows all) ───── */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity 0.6s ease,transform 0.6s ease;}
.js .reveal.is-visible{opacity:1;transform:none;}

/* ══════════════════════════════════════════════════════════════════════════
   SUB-PAGE PRIMITIVES — shared building blocks for /core, /roblox, /developers,
   /research, /what-is-thalyn, /licensing, /demo, /legal, /prior-art.
   ══════════════════════════════════════════════════════════════════════════ */

/* Shorter hero for interior pages */
.page-hero{padding:9rem 2rem 4.5rem;text-align:center;position:relative;}
.page-hero::before{content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 55% 45% at 50% 35%,rgba(0,168,160,0.06),transparent 70%);}
.page-eyebrow{font-family:var(--font-display);font-size:0.68rem;letter-spacing:0.22em;text-transform:uppercase;color:var(--teal);margin-bottom:1.2rem;display:block;}
.page-title{font-family:var(--font-display);font-size:clamp(2rem,5vw,3.6rem);font-weight:700;color:var(--text-bright);line-height:1.15;margin-bottom:1.2rem;}
.page-title em{font-style:normal;background:var(--gild-soft);-webkit-background-clip:text;background-clip:text;color:transparent;}
.page-sub{font-size:1.15rem;font-weight:300;font-style:italic;color:var(--parchment-dim);max-width:620px;margin:0 auto 2.4rem;line-height:1.55;}

/* Prose block */
.prose{max-width:820px;margin-inline:auto;padding:5rem 2rem;}
.prose.tight{padding:3.5rem 2rem;}
.label{font-family:var(--font-display);font-size:0.68rem;letter-spacing:0.2em;text-transform:uppercase;color:var(--teal);margin-bottom:1.6rem;display:block;}
.prose h2{font-family:var(--font-display);font-size:clamp(1.4rem,3vw,2rem);font-weight:600;color:var(--text-bright);margin-bottom:1.4rem;line-height:1.25;}
.prose h3{font-family:var(--font-display);font-size:1.05rem;font-weight:600;color:var(--text-bright);margin:2rem 0 0.8rem;}
.prose p{font-size:1.05rem;font-weight:300;color:var(--parchment);margin-bottom:1.2rem;line-height:1.75;}
.prose p strong{color:var(--text-bright);font-weight:600;}
.prose a{color:var(--teal);text-decoration:underline;text-underline-offset:2px;}

/* Panelled band (alt background) */
.band{background:var(--panel);}
.band-inner{max-width:var(--maxw);margin-inline:auto;}

/* Feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2.5rem;}
.feature-card{border-top:1px solid var(--border);padding-top:1.5rem;}
.feature-card h3{font-family:var(--font-display);font-size:0.92rem;font-weight:600;color:var(--text-bright);margin-bottom:0.6rem;line-height:1.3;}
.feature-card p{font-size:0.95rem;font-weight:300;color:var(--parchment-dim);line-height:1.65;}

/* Tile grid (e.g. the six emotions) */
.tile-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border-subtle);margin-top:2.5rem;}
.tile{background:var(--panel);padding:1.8rem 1.5rem;transition:background 0.2s;}
.tile:hover{background:var(--panel-light);}
.tile-name{font-family:var(--font-display);font-size:0.9rem;font-weight:600;color:var(--text-bright);margin-bottom:0.4rem;}
.tile-desc{font-size:0.88rem;font-weight:300;color:var(--parchment-dim);line-height:1.5;}

/* Callout (left gold rule) */
.callout{background:var(--panel);border-left:3px solid transparent;border-image:var(--gild) 1;padding:2rem 2rem 2rem 2.5rem;max-width:820px;margin:3rem auto;}
.callout .label{color:var(--gold);font-size:0.62rem;margin-bottom:0.8rem;}
/* Gilded accent surfaces (§2c) and active/selected/featured borders (§2d). */
.accent-line,.divider-gold,.progress-fill{background:var(--gild);}
.is-active,.selected,.card-featured{border:1px solid transparent;border-image:var(--gild) 1;}
.callout h3{font-family:var(--font-display);font-size:1.05rem;font-weight:600;color:var(--text-bright);margin-bottom:0.7rem;line-height:1.3;}
.callout p{font-size:0.98rem;font-weight:300;color:var(--parchment);line-height:1.7;}

/* Numbered steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5px;background:var(--border-subtle);margin-top:2.5rem;}
.step{background:var(--panel);padding:2rem 1.6rem;}
.step-num{font-family:var(--font-display);font-size:1.8rem;font-weight:700;color:rgba(212,136,10,0.4);line-height:1;margin-bottom:0.8rem;}
.step h3{font-family:var(--font-display);font-size:1rem;font-weight:600;color:var(--text-bright);margin-bottom:0.6rem;line-height:1.3;}
.step p{font-size:0.95rem;font-weight:300;color:var(--parchment-dim);line-height:1.65;}

/* Can / Can't grid (licensing) */
.cancant{display:grid;grid-template-columns:1fr 1fr;gap:1.5px;background:var(--border-subtle);border:1px solid var(--border-subtle);margin-top:2rem;}
.cancant-col{background:var(--panel);padding:2rem 1.8rem;}
.cancant-col h3{font-family:var(--font-display);font-size:0.95rem;letter-spacing:0.04em;margin-bottom:1.2rem;}
.cancant-col.can h3{color:var(--teal);}
.cancant-col.cant h3{color:#E0A07A;}
.cancant-col ul{list-style:none;display:flex;flex-direction:column;gap:0.9rem;}
.cancant-col li{font-size:0.95rem;font-weight:300;color:var(--parchment);line-height:1.5;padding-left:1.4rem;position:relative;}
.cancant-col.can li::before{content:'✓';position:absolute;left:0;color:var(--teal);}
.cancant-col.cant li::before{content:'✕';position:absolute;left:0;color:#E0A07A;}

/* Table of contents */
.toc{background:var(--panel);border:1px solid var(--border-subtle);padding:1.6rem 1.8rem;max-width:820px;margin:0 auto 2rem;}
.toc .label{margin-bottom:1rem;}
.toc ol{list-style:none;counter-reset:toc;display:grid;gap:0.6rem;}
.toc li{counter-increment:toc;}
.toc a{font-family:var(--font-display);font-size:0.8rem;letter-spacing:0.04em;color:var(--parchment-dim);text-decoration:none;}
.toc a::before{content:counter(toc,decimal-leading-zero)'  ';color:var(--teal-dim);}
.toc a:hover{color:var(--gold);}

/* Bottom CTA band */
.cta-band{padding:4.5rem 2rem;text-align:center;background:var(--panel);}
.cta-band .eyebrow{color:var(--teal);margin-bottom:1.5rem;}
.cta-band .note{font-size:0.82rem;color:var(--parchment-dim);margin-top:2rem;font-style:italic;}

/* Enemy/hook line — a single sharp line that opens a section */
.hook{font-family:var(--font-display);font-size:clamp(1.2rem,2.6vw,1.7rem);font-weight:600;color:var(--text-bright);max-width:760px;margin:0 auto;line-height:1.35;text-align:center;}
.hook em{font-style:normal;background:var(--gild-soft);-webkit-background-clip:text;background-clip:text;color:transparent;}
/* Reusable gilded-text utility — large display type only; on small text
   background-clip kills contrast (§2b/§5). */
.gild-text{background:var(--gild-soft);-webkit-background-clip:text;background-clip:text;color:transparent;}

@media(max-width:768px){
  .tile-grid,.steps{grid-template-columns:1fr;}
  .cancant{grid-template-columns:1fr;}
}

/* ── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media(max-width:900px){
  .site-nav{padding:0 1.2rem;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed; inset:var(--nav-h) 0 auto 0; flex-direction:column; gap:0;
    background:rgba(11,21,21,0.98); border-bottom:1px solid var(--border-subtle);
    padding:1rem 0; margin:0; transform:translateY(-150%); transition:transform 0.3s ease;
  }
  .site-nav[data-open="true"] .nav-links{transform:translateY(0);}
  .nav-links a{display:block;padding:0.9rem 1.4rem;font-size:0.8rem;}
  .nav-cta-inline{display:none;}
}
@media(max-width:768px){
  .problem-grid{grid-template-columns:1fr;}
}
@media(max-width:600px){
  .thalyn-mark img{height:48px;}
  .hero{padding:7rem 1.4rem 4rem;}
}

/* ── REDUCED MOTION ──────────────────────────────────────────────────────── */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:0.001ms!important;animation-iteration-count:1!important;transition-duration:0.001ms!important;}
  .tw-target::after{animation:none;}
  .btn-primary::after{animation:none;}   /* park the sheen off-screen (§3) */
  .reveal{opacity:1;transform:none;}
}