/* ============================================================
   The Human Signal — AI Literacy Self-Assessment
   Dark liquid-glass treatment on the signature brand background:
   #191919 base · faint 64px grid · gold glow upper-right ·
   maroon glow lower-left. Gold accents/CTAs on dark, per brand.
   ============================================================ */

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

:root{
  /* ---- Primary brand ---- */
  --maroon:      #8c1d40;
  --gold:        #ffc627;
  --black:       #191919;
  --white:       #fafafa;
  --maroon-deep: #5e1230;

  /* ---- Text on dark ---- */
  --txt:   #fafafa;
  --txt-2: rgba(250,250,250,0.66);
  --txt-3: rgba(250,250,250,0.45);

  /* ---- Glass ---- */
  --glass-bg:        rgba(250,250,250,0.05);
  --glass-bg-chip:   rgba(250,250,250,0.04);
  --glass-border:    rgba(250,250,250,0.14);
  --line-dark:       rgba(250,250,250,0.12);

  /* ---- Type ---- */
  --font-voice:   'Inconsolata', ui-monospace, monospace;
  --font-display: 'IBM Plex Sans Condensed', 'IBM Plex Sans', sans-serif;
  --font-body:    'IBM Plex Sans', system-ui, sans-serif;
  --font-serif:   'IBM Plex Serif', Georgia, serif;

  /* ---- Shape & depth ---- */
  --radius-sm: 10px;
  --radius:    14px;
  --radius-lg: 22px;
  --shadow-panel: 0 24px 60px rgba(0,0,0,0.38), 0 4px 14px rgba(0,0,0,0.28);
  --shadow-cta:   0 4px 6px rgba(25,25,25,0.25), 0 10px 24px rgba(25,25,25,0.35);
  --shadow-cta-hover: 0 12px 28px rgba(255,198,39,0.22), 0 4px 10px rgba(25,25,25,0.35);
}

::selection{ background:var(--gold); color:var(--black); }

html{scrollbar-gutter:stable}

body{
  font-family:var(--font-body);
  font-weight:400;
  color:var(--txt);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  background-color:var(--black);
  /* Signature glow pair: gold upper-right, maroon lower-left */
  background-image:
    radial-gradient(900px 620px at 88% -8%,  rgba(255,198,39,0.13), transparent 62%),
    radial-gradient(1100px 820px at -12% 108%, rgba(140,29,64,0.5),  transparent 62%);
  background-attachment:fixed;
  overflow-x:hidden;
}

/* Faint 64px grid, faded by a radial mask — signature backdrop layer */
.grid-layer{
  position:fixed; inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(250,250,250,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(250,250,250,0.045) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 28%, #000 0%, transparent 78%);
          mask-image:radial-gradient(ellipse 80% 70% at 50% 28%, #000 0%, transparent 78%);
}

/* Liquid orbs — slow-drifting colour fields the glass blurs against */
.orb{
  position:fixed;
  border-radius:50%;
  filter:blur(90px);
  pointer-events:none;
  z-index:0;
  will-change:transform;
}
.orb-gold{
  width:520px;height:520px;
  top:-160px;right:-120px;
  background:radial-gradient(circle, rgba(255,198,39,0.16), transparent 70%);
  animation:drift-a 38s ease-in-out infinite alternate;
}
.orb-maroon{
  width:640px;height:640px;
  bottom:-220px;left:-180px;
  background:radial-gradient(circle, rgba(140,29,64,0.55), transparent 70%);
  animation:drift-b 46s ease-in-out infinite alternate;
}
.orb-ember{
  width:300px;height:300px;
  top:52%;left:62%;
  background:radial-gradient(circle, rgba(255,198,39,0.07), transparent 70%);
  animation:drift-c 52s ease-in-out infinite alternate;
}
@keyframes drift-a{
  from{transform:translate3d(0,0,0) scale(1)}
  to  {transform:translate3d(-90px,120px,0) scale(1.15)}
}
@keyframes drift-b{
  from{transform:translate3d(0,0,0) scale(1)}
  to  {transform:translate3d(110px,-90px,0) scale(1.08)}
}
@keyframes drift-c{
  from{transform:translate3d(0,0,0)}
  to  {transform:translate3d(-140px,-100px,0)}
}

@media (prefers-reduced-motion: reduce){
  .orb{animation:none}
  *{transition-duration:0.01ms !important; animation-duration:0.01ms !important}
}

/* ---- Layout ---- */
.app{
  position:relative;
  z-index:1;
  max-width:720px;
  margin:0 auto;
  padding:clamp(28px, 5vw, 48px) clamp(20px, 5vw, 28px) 64px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:clamp(28px, 4.5vw, 44px);
}
.wordmark{
  font-family:var(--font-voice);
  font-weight:500;
  font-size:13px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--txt);
  display:flex;
  align-items:center;
  gap:10px;
}
.wordmark-dot{width:5px;height:5px;background:var(--gold);border-radius:50%;flex-shrink:0}

.progress-wrap{display:flex;align-items:center;gap:12px}
.progress-wrap.hidden{visibility:hidden}
.progress-track{
  width:140px;height:3px;
  background:var(--line-dark);
  border-radius:999px;
  overflow:hidden;
}
.progress-fill{
  width:0;
  height:100%;
  background:var(--gold);
  border-radius:999px;
  transition:width 0.4s ease;
}
.progress-ct{
  font-family:var(--font-voice);
  font-size:11px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--txt-3);
  white-space:nowrap;
}

/* ---- The glass panel ---- */
.glass{
  position:relative;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  padding:clamp(28px, 5.5vw, 52px);
  box-shadow:var(--shadow-panel), inset 0 1px 0 rgba(250,250,250,0.10);
  -webkit-backdrop-filter:blur(24px) saturate(1.25);
          backdrop-filter:blur(24px) saturate(1.25);
}
/* Specular top edge — the "liquid" highlight */
.glass::before{
  content:'';
  position:absolute;
  top:0;left:10%;right:10%;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(250,250,250,0.35), transparent);
  pointer-events:none;
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .glass{background:rgba(32,30,31,0.92)}
}

.screen{display:none}
.screen.active{display:block;animation:screen-in 0.45s ease both}
@keyframes screen-in{
  from{opacity:0;transform:translateY(14px)}
  to  {opacity:1;transform:translateY(0)}
}

/* ---- Eyebrow ---- */
.eyebrow{
  font-family:var(--font-voice);
  font-size:11px;
  font-weight:500;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:9px;
}
.eyebrow::before{
  content:'';
  width:4px;height:4px;
  background:var(--gold);
  border-radius:50%;
}

/* ---- Intro ---- */
.intro-hl{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(42px, 7vw, 68px);
  line-height:0.94;
  letter-spacing:-0.025em;
  color:var(--txt);
  margin-bottom:24px;
}
.intro-hl em{
  font-family:var(--font-serif);
  font-style:italic;
  font-weight:400;
  letter-spacing:-0.01em;
  color:var(--gold);
  position:relative;
  white-space:nowrap;
}
/* Signature translucent gold underline bar */
.intro-hl em::after{
  content:'';
  position:absolute;
  left:-2px;right:-2px;bottom:0.02em;
  height:0.16em;
  background:rgba(255,198,39,0.28);
  z-index:-1;
}
.intro-lead{
  font-size:16px;
  line-height:1.6;
  color:var(--txt-2);
  max-width:500px;
  margin-bottom:32px;
}

.meta-strip{
  display:flex;
  gap:26px;
  padding:16px 0;
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
  margin-bottom:36px;
  flex-wrap:wrap;
}
.meta-item{
  font-family:var(--font-voice);
  font-size:11px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--txt-2);
  display:flex;
  align-items:center;
  gap:8px;
}
.meta-dot{width:4px;height:4px;background:var(--gold);flex-shrink:0;border-radius:50%}

.disclosure{
  font-size:12px;
  line-height:1.55;
  color:var(--txt-3);
  max-width:480px;
  margin-top:24px;
}

/* ---- Question ---- */
.q-dim{
  font-family:var(--font-voice);
  font-size:11px;
  font-weight:500;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:14px;
}
.q-text{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(26px, 4vw, 31px);
  line-height:1.15;
  letter-spacing:-0.01em;
  color:var(--txt);
  margin-bottom:28px;
  max-width:580px;
}

.q-text-compact{font-size:28px;margin-bottom:14px}
.r-dims{margin-bottom:8px}

.options{display:flex;flex-direction:column;gap:10px;margin-bottom:32px}
.opt{
  padding:15px 18px;
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  background:var(--glass-bg-chip);
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  gap:14px;
  transition:border-color 0.18s, background 0.18s, box-shadow 0.18s, transform 0.18s;
  text-align:left;
  width:100%;
  font-family:var(--font-body);
  color:var(--txt);
  box-shadow:inset 0 1px 0 rgba(250,250,250,0.06);
}
.opt:hover{
  border-color:rgba(255,198,39,0.55);
  background:rgba(250,250,250,0.07);
  transform:translateY(-1px);
}
.opt.sel{
  border-color:var(--gold);
  background:rgba(255,198,39,0.10);
  box-shadow:0 0 0 3px rgba(255,198,39,0.14), inset 0 1px 0 rgba(250,250,250,0.08);
}
.opt-lt{
  font-family:var(--font-voice);
  font-size:13px;
  font-weight:500;
  letter-spacing:0.05em;
  color:var(--txt-3);
  min-width:14px;
  padding-top:2px;
  transition:color 0.18s;
}
.opt.sel .opt-lt{color:var(--gold)}
.opt-tx{
  font-size:15px;
  line-height:1.55;
  color:var(--txt);
  flex:1;
}

/* ---- Buttons — gold on dark, per the surface → accent rule ---- */
.btn-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.btn-p{
  font-family:var(--font-voice);
  font-size:12px;
  font-weight:500;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--black);
  background:var(--gold);
  border:none;
  border-radius:var(--radius-sm);
  padding:14px 28px;
  cursor:pointer;
  box-shadow:var(--shadow-cta);
  transition:transform 0.15s, box-shadow 0.15s, filter 0.15s, opacity 0.15s;
  text-decoration:none;
  display:inline-block;
}
.btn-p:hover{transform:translateY(-2px);box-shadow:var(--shadow-cta-hover);filter:brightness(1.04)}
.btn-p:disabled{opacity:0.25;cursor:not-allowed;transform:none;box-shadow:none;filter:none}

.btn-ghost{
  font-family:var(--font-voice);
  font-size:12px;
  font-weight:500;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--txt-2);
  background:transparent;
  border:1px solid rgba(250,250,250,0.28);
  border-radius:var(--radius-sm);
  padding:13px 24px;
  cursor:pointer;
  transition:color 0.15s, border-color 0.15s, background 0.15s;
}
.btn-ghost:hover{color:var(--gold);border-color:rgba(255,198,39,0.6);background:rgba(255,198,39,0.05)}

.btn-g{
  font-family:var(--font-voice);
  font-size:12px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--txt-3);
  background:none;
  border:none;
  cursor:pointer;
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:0.5px;
  padding:14px 0;
  transition:color 0.15s;
}
.btn-g:hover{color:var(--txt)}
.btn-g.hidden{display:none}

:is(button, a):focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
  border-radius:var(--radius-sm);
}

/* ---- Profession picker ---- */
.prof-intro{
  font-size:15px;
  line-height:1.6;
  color:var(--txt-2);
  margin-bottom:24px;
  max-width:480px;
}
.prof-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:8px;
  margin-bottom:32px;
}
.prof-opt{
  padding:12px 14px;
  border:1px solid var(--glass-border);
  border-radius:var(--radius-sm);
  background:var(--glass-bg-chip);
  cursor:pointer;
  font-family:var(--font-body);
  font-size:13px;
  color:var(--txt);
  display:flex;
  align-items:center;
  gap:10px;
  transition:border-color 0.18s, box-shadow 0.18s, background 0.18s;
  text-align:left;
  width:100%;
}
.prof-opt:hover{border-color:rgba(255,198,39,0.55);background:rgba(250,250,250,0.07)}
.prof-opt.sel{
  border-color:var(--gold);
  background:rgba(255,198,39,0.10);
  box-shadow:0 0 0 3px rgba(255,198,39,0.14);
}
.prof-icon{width:16px;height:16px;stroke:var(--gold);flex-shrink:0}

/* ---- Result ---- */
.res-tier-label{
  font-family:var(--font-voice);
  font-size:11px;
  font-weight:500;
  letter-spacing:0.18em;
  text-transform:uppercase;
  margin-bottom:10px;
}
.res-tier-name{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(52px, 9vw, 72px);
  line-height:0.93;
  letter-spacing:-0.025em;
  margin-bottom:18px;
}
.res-score{
  font-family:var(--font-voice);
  font-size:11px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--txt-3);
  margin-bottom:24px;
}
.divider{height:1px;background:var(--line-dark);margin:28px 0}

.res-char{
  font-family:var(--font-serif);
  font-size:17px;
  line-height:1.65;
  color:var(--txt);
  max-width:560px;
}

.dim-row{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.dim-label{
  font-family:var(--font-voice);
  font-size:11px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--txt-2);
  min-width:180px;
}
.dim-track{flex:1;height:3px;background:var(--line-dark);border-radius:999px;overflow:hidden}
.dim-bar{height:100%;border-radius:999px;transition:width 0.7s ease}
.dim-pct{
  font-family:var(--font-voice);
  font-size:13px;
  font-weight:500;
  color:var(--txt);
  min-width:38px;
  text-align:right;
}

.next-box{
  background:rgba(255,198,39,0.06);
  border:1px solid rgba(255,198,39,0.18);
  border-left:2px solid var(--gold);
  border-radius:var(--radius-sm);
  padding:18px 22px;
  margin-bottom:32px;
}
.next-label{
  font-family:var(--font-voice);
  font-size:10px;
  font-weight:500;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:8px;
}
.next-text{
  font-size:15px;
  line-height:1.6;
  color:var(--txt);
}

/* Tier weight ramp on dark: quiet grey → white → gold */
.c-quiet{color:#a8a8a8 !important}
.c-ink{color:var(--txt) !important}
.c-copper{color:var(--gold) !important}
.b-quiet{background:#a8a8a8 !important}
.b-ink{background:var(--txt) !important}
.b-copper{background:var(--gold) !important}

@media (max-width: 540px){
  .topbar{margin-bottom:26px}
  .progress-track{width:90px}
  .dim-label{min-width:132px}
  .prof-grid{grid-template-columns:1fr}
  .btn-row{gap:14px}
}