/* ESAI · esai.bjx.be · Material 3 Expressive edition
   Design spec: DESIGN.md · winner mockup 33 "Material You" */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Inter:wght@400;500;600&family=Roboto+Mono:wght@400;500&display=swap');

:root {
  /* Surfaces · warm neutral */
  --md-surface:       #FDF8F4;
  --md-surface-cont:  #F3EDE7;
  --md-surface-hi:    #FFFFFF;
  --md-on-surface:    #1D1B20;
  --md-on-surface-var:#49454F;
  --md-outline:       #79747E;
  --md-outline-var:   #CAC4D0;

  /* Primary · expressive purple */
  --md-primary:       #6750A4;
  --md-primary-hover: #705FB2;
  --md-on-primary:    #FFFFFF;
  --md-primary-cont:  #E5DDFF;
  --md-on-primary-cont:#21005D;

  /* Secondary · teal container */
  --md-secondary-cont:     #D8E7E5;
  --md-on-secondary-cont:  #0B2925;

  /* Tertiary · green */
  --md-tertiary:           #4E7A57;
  --md-tertiary-cont:      #C9EFB5;
  --md-on-tertiary-cont:   #0B3309;

  /* Error / warning */
  --md-error:      #B3261E;
  --md-error-cont: #F9DEDC;
  --md-warn:       #B45309;
  --md-warn-cont:  #FEF3E2;

  /* Signature highlight */
  --md-gold: #E8B931;

  /* RGB helpers */
  --md-primary-rgb: 103, 80, 164;
  --md-surface-rgb: 253, 248, 244;

  /* Type */
  --font-display: 'Outfit', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', 'Roboto', system-ui, sans-serif;
  --font-mono: 'Roboto Mono', ui-monospace, monospace;

  /* M3 rhythm */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 16px; --sp-4: 24px; --sp-5: 32px; --sp-6: 48px; --sp-7: 80px;
  --r-card: 28px; --r-btn: 100px; --r-sm: 12px;
  --shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 1px 3px rgba(0,0,0,.06);
  --shadow-2: 0 2px 6px rgba(0,0,0,.10), 0 6px 16px rgba(0,0,0,.08);
  --shadow-3: 0 8px 24px rgba(103,80,164,.18);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--md-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 3px solid var(--md-primary); outline-offset: 2px; border-radius: var(--r-sm);
}
.container { max-width: 1180px; margin: 0 auto; padding: 0 var(--sp-4); }
.mono, .num { font-variant-numeric: tabular-nums; }

/* ---------- App bar ---------- */
.appbar {
  position: sticky; top: 0; z-index: 60; height: 64px;
  background: transparent;
  transition: background .2s ease, box-shadow .2s ease;
  backdrop-filter: blur(0px);
}
.appbar.scrolled {
  background: rgba(var(--md-surface-rgb), .86);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-1);
}
.appbar-inner { display: flex; align-items: center; gap: var(--sp-3); height: 64px; }
.wordmark {
  font-family: var(--font-display); font-weight: 800; font-size: 22px;
  color: var(--md-primary); display: flex; align-items: center; gap: 10px; letter-spacing: -.01em;
}
.wordmark:hover { text-decoration: none; }
.nav-links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav-link {
  font-size: 14px; font-weight: 500; color: var(--md-on-surface);
  padding: 10px 16px; border-radius: var(--r-btn); min-height: 44px;
  display: inline-flex; align-items: center;
}
.nav-link:hover { background: var(--md-primary-cont); text-decoration: none; }
.nav-cta { margin-left: var(--sp-2); }

/* ---------- Buttons (M3 trio + ripple) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  font-family: var(--font-display); font-size: 15px; font-weight: 600;
  padding: 0 var(--sp-4); min-height: 48px; border: none; cursor: pointer;
  border-radius: var(--r-btn); position: relative; overflow: hidden;
  text-decoration: none;
  transition: box-shadow .15s ease, background .15s ease, transform .15s ease;
}
.btn:hover { text-decoration: none; }
.btn-filled { background: var(--md-primary); color: var(--md-on-primary); }
.btn-filled:hover { background: var(--md-primary-hover); box-shadow: var(--shadow-3); }
.btn-filled:active { transform: scale(.97); }
.btn-tonal { background: var(--md-secondary-cont); color: var(--md-on-secondary-cont); }
.btn-tonal:hover { box-shadow: var(--shadow-1); }
.btn-outlined { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }
.btn-outlined:hover { background: var(--md-primary-cont); }
/* legacy aliases (kept for any straggler markup) */
.btn-primary { background: var(--md-primary); color: var(--md-on-primary); }
.btn-primary:hover { background: var(--md-primary-hover); box-shadow: var(--shadow-3); }
.btn-secondary { background: var(--md-secondary-cont); color: var(--md-on-secondary-cont); }
.btn-lg { min-height: 56px; padding: 0 var(--sp-5); font-size: 16px; }
.btn .ic { flex: none; }

/* Ripple (one-shot radial, appended by app.js on pointerdown) */
.ripple {
  position: absolute; border-radius: 50%; transform: scale(0);
  opacity: .35; background: currentColor; pointer-events: none;
  animation: ripple .5s ease-out forwards;
}
@keyframes ripple { to { transform: scale(2.6); opacity: 0; } }

/* ---------- Hero ---------- */
.hero { position: relative; padding: var(--sp-5) var(--sp-4) var(--sp-5); text-align: center; overflow: hidden; }
.hero-glow {
  position: absolute; inset: auto 0 0 0; height: 280px; pointer-events: none; z-index: 0;
  background: radial-gradient(600px 240px at 50% 100%, var(--md-primary-cont) 0%, transparent 70%);
  opacity: .55;
}
.hero .container { position: relative; z-index: 1; }
.hero-pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px;
  background: var(--md-primary-cont); color: var(--md-on-primary-cont);
  border-radius: var(--r-btn); font-size: 13px; font-weight: 600; margin-bottom: var(--sp-4);
}
.hero-h1 {
  font-family: var(--font-display); font-size: 57px; font-weight: 800;
  line-height: 1.08; letter-spacing: -.025em; max-width: 19ch; margin: 0 auto var(--sp-3);
}
.hero-h1 .word {
  display: inline-block; opacity: 0; transform: translateY(26px);
  transition: opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1);
}
.hero-h1 .word.up { opacity: 1; transform: none; }
.hero-h1 .word.swing.up { color: var(--md-primary); }
.hero-h1 .line2 { display: block; margin-top: 0.08em; }
.hero-sub {
  max-width: 58ch; margin: 0 auto var(--sp-4);
  color: var(--md-on-surface-var); font-size: 17px;
}
.hero-cta { display: flex; gap: var(--sp-2); justify-content: center; flex-wrap: wrap; margin-bottom: var(--sp-3); }
.hero-hint, .trustline {
  font-size: 13px; color: var(--md-on-surface-var);
  display: inline-flex; gap: var(--sp-2); justify-content: center; align-items: center;
}

/* Hero stats: elevated stat-cards */
.stat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3);
  margin: var(--sp-6) auto 0; max-width: 1020px; text-align: left;
}
.stat-card {
  background: var(--md-surface-hi); border-radius: var(--r-card); padding: var(--sp-4);
  box-shadow: var(--shadow-1); position: relative; overflow: hidden;
  transition: box-shadow .2s ease, transform .2s ease, background-color .6s ease;
}
.stat-card:hover { box-shadow: var(--shadow-2); transform: translateY(-3px); }
.icon-dot {
  width: 48px; height: 48px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center; margin-bottom: var(--sp-3);
}
.stat-card:nth-child(1) .icon-dot { background: var(--md-primary-cont); color: var(--md-on-primary-cont); }
.stat-card:nth-child(2) .icon-dot { background: var(--md-secondary-cont); color: var(--md-on-secondary-cont); }
.stat-card:nth-child(3) .icon-dot { background: var(--md-tertiary-cont); color: var(--md-on-tertiary-cont); }
.stat-value {
  font-family: var(--font-display); font-variant-numeric: tabular-nums;
  font-size: 44px; font-weight: 800; line-height: 1.05; letter-spacing: -.02em;
}
.stat-value .unit { font-size: 22px; font-weight: 700; color: var(--md-on-surface-var); }
.stat-value .prefix { font-size: 32px; font-weight: 700; color: var(--md-on-surface-var); margin-right: 2px; }
.stat-caption { font-size: 14px; color: var(--md-on-surface-var); margin-top: var(--sp-1); }
.stat-card { display: flex; flex-direction: column; }
.stat-source {
  margin-top: auto; padding-top: var(--sp-2);
  font: italic 400 11px var(--font-body); color: var(--md-outline); text-decoration: none;
}
.stat-source:hover { color: var(--md-primary); text-decoration: underline; }
@media (max-width: 767px) { .stat-grid { grid-template-columns: 1fr; } }

/* Signature: tonal step when a value updates */
.updated { animation: toneShift 1.2s ease; }
@keyframes toneShift {
  0%   { background-color: var(--md-surface-hi); }
  30%  { background-color: var(--md-primary-cont); }
  60%  { background-color: var(--md-secondary-cont); }
  100% { background-color: var(--md-surface-hi); }
}

/* ---------- Partner strip (hero top) ---------- */
.partners { margin: 0 0 var(--sp-6); }
.partner-row { display: flex; justify-content: center; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }
.partners-label {
  font-family: var(--font-body); font-size: 11px; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--md-on-surface-var); opacity: .6;
  margin: var(--sp-2) 0 0; text-align: center;
}
.partner-item {
  display: inline-flex; align-items: center;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-sm);
  transition: background-color .25s ease, box-shadow .25s ease;
}
.partner-item img {
  height: 28px; width: auto;
  filter: grayscale(1); opacity: .5;
  transition: filter .25s ease, opacity .25s ease, transform .25s ease;
}
.partner-item:hover { background: var(--md-surface-hi); box-shadow: var(--shadow-1); }
.partner-item:hover img { filter: none; opacity: 1; transform: translateY(-1px); }
.partner-item:focus-visible { background: var(--md-surface-hi); }

/* ---------- Section scaffolding ---------- */
.section { padding: var(--sp-7) 0; }
.section-head { text-align: center; max-width: 60ch; margin: 0 auto var(--sp-5); }
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--md-primary); font-weight: 600;
}
.section-head h2 {
  font-family: var(--font-display); font-size: 32px; font-weight: 700;
  letter-spacing: -.015em; margin: var(--sp-1) 0;
}
.section-head p { color: var(--md-on-surface-var); }
.section-alt { background: var(--md-surface-cont); }

/* ---------- Tax cards: tonal + spotlight ---------- */
.grid { display: grid; gap: var(--sp-3); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  border-radius: var(--r-card); padding: var(--sp-4); min-height: 220px;
  display: flex; flex-direction: column; gap: var(--sp-2);
  position: relative; overflow: hidden;
  transition: box-shadow .2s ease, transform .2s ease;
}
.card:hover { box-shadow: var(--shadow-2); transform: translateY(-3px); }
/* spotlight ::before · radial highlight tracking --mx/--my (set by app.js), blue-tinted to primary */
.card::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 50%),
    rgba(var(--md-primary-rgb), .12), transparent 70%);
  opacity: 0; transition: opacity .25s ease;
}
.card:hover::before { opacity: 1; }
.tonal-1 { background: var(--md-primary-cont); color: var(--md-on-primary-cont); }
.tonal-2 { background: var(--md-secondary-cont); color: var(--md-on-secondary-cont); }
.tonal-3 { background: var(--md-tertiary-cont); color: var(--md-on-tertiary-cont); }
.card-icon {
  width: 44px; height: 44px; border-radius: 14px; background: rgba(255,255,255,.55);
  display: flex; align-items: center; justify-content: center; flex: none;
}
.card h3 { font-family: var(--font-display); font-size: 20px; font-weight: 700; }
.card p { font-size: 14.5px; opacity: .9; }

/* ---------- Calculator shell ---------- */
.wizard {
  background: var(--md-surface-hi); border-radius: var(--r-card);
  box-shadow: var(--shadow-2); max-width: 1020px; margin: 0 auto; overflow: hidden;
}
.wizard-progress {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5) 0;
}
.progress-track {
  flex: 1; height: 8px; max-width: 220px; border-radius: var(--r-btn);
  background: var(--md-surface-cont); overflow: hidden;
}
.progress-fill {
  height: 100%; width: 25%; border-radius: var(--r-btn);
  background: var(--md-primary); transition: width .3s ease;
}
.progress-label { font-family: var(--font-mono); font-size: 13px; color: var(--md-on-surface-var); }
.wizard-body { padding: var(--sp-5); }
.wizard-nav {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2);
  padding: 0 var(--sp-5) var(--sp-5);
}
.wizard-stepcount { font-family: var(--font-mono); font-size: 13px; color: var(--md-on-surface-var); }

/* Question steps: tonal primary-cont panel on the white shell */
.qstep { display: none; }
.qstep.active { display: block; animation: stepIn .3s ease; }
@keyframes stepIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.qstep {
  background: var(--md-primary-cont); color: var(--md-on-primary-cont);
  border-radius: 20px; padding: var(--sp-5);
}
.q-kicker {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em;
  text-transform: uppercase; font-weight: 600; margin-bottom: var(--sp-2);
  display: flex; align-items: center; gap: var(--sp-2);
}
.q-title {
  font-family: var(--font-display); font-size: 24px; font-weight: 600;
  line-height: 1.3; margin-bottom: var(--sp-2);
}
.q-hint { font-size: 14px; opacity: .8; margin-bottom: var(--sp-4); max-width: 62ch; }

/* Yes/no answer buttons as M3 segmented list buttons */
.yn-row { display: flex; flex-direction: column; gap: var(--sp-2); max-width: 520px; }
.yn {
  display: flex; align-items: center; gap: var(--sp-3); text-align: left; width: 100%;
  padding: 14px var(--sp-3); min-height: 52px; cursor: pointer;
  background: var(--md-surface-hi); border: 1px solid var(--md-outline-var);
  border-radius: var(--r-sm); font-family: var(--font-body); font-size: 15px; font-weight: 500;
  color: var(--md-on-surface);
  transition: background .15s ease, border-color .15s ease;
  position: relative; overflow: hidden;
}
.yn:hover { background: var(--md-surface-cont); }
.yn-mark {
  width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--md-outline); flex: none;
  display: flex; align-items: center; justify-content: center; transition: all .15s ease;
}
.yn-mark svg { opacity: 0; transition: opacity .15s ease; }
.yn.selected {
  background: var(--md-secondary-cont); border-color: var(--md-secondary-cont);
  color: var(--md-on-secondary-cont);
}
.yn.selected .yn-mark { background: var(--md-primary); border-color: var(--md-primary); color: var(--md-on-primary); }
.yn.selected .yn-mark svg { opacity: 1; }
/* "no" selection variant · error tint */
.yn.no-answer {
  background: var(--md-error-cont); border-color: var(--md-error-cont); color: var(--md-error);
}
.yn.no-answer .yn-mark { background: var(--md-error); border-color: var(--md-error); color: var(--md-on-primary); }

/* Q4 spend input */
.spend-single { margin-bottom: var(--sp-4); max-width: 520px; }
.field-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: var(--sp-2); }
.number-input {
  width: 100%; min-height: 52px; padding: 0 var(--sp-3);
  font-family: var(--font-display); font-size: 24px; font-weight: 700;
  font-variant-numeric: tabular-nums; color: var(--md-on-primary-cont);
  background: var(--md-surface-hi); border: 1px solid var(--md-outline-var);
  border-radius: var(--r-sm); outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.number-input:focus { border-color: var(--md-primary); box-shadow: 0 0 0 3px rgba(var(--md-primary-rgb), .25); }
.field-hint { font-size: 13px; opacity: .8; margin-top: var(--sp-2); }

/* ---------- Badges ---------- */
.badge {
  font-family: var(--font-mono); font-size: 12px; font-weight: 600;
  background: var(--md-tertiary-cont); color: var(--md-on-tertiary-cont);
  padding: 6px 14px; border-radius: var(--r-btn); display: inline-block;
}
.badge-warn { background: var(--md-warn-cont); color: var(--md-warn); }
.badge-danger { background: var(--md-error-cont); color: var(--md-error); }
.risk-head { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; margin-bottom: var(--sp-3); }
.risk-head .q-title { margin-bottom: 0; }

/* ---------- Gap cards ---------- */
.gap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-2); margin-bottom: var(--sp-4); }
.gap-card {
  background: var(--md-surface-cont); border: 1px solid var(--md-outline-var);
  border-radius: var(--r-sm); padding: var(--sp-3);
}
.gap-card h4 { font-family: var(--font-display); font-size: 15px; font-weight: 700; margin-bottom: var(--sp-1); }
.gap-card p { font-size: 13px; color: var(--md-on-surface-var); }
.gap-status {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; display: inline-block; padding: 2px 10px; border-radius: var(--r-btn);
  background: var(--md-surface-hi); color: var(--md-outline); margin-bottom: var(--sp-2);
}
.gap-card.is-gap { background: var(--md-error-cont); border-color: var(--md-error-cont); }
.gap-card.is-gap .gap-status { background: var(--md-error); color: var(--md-on-primary); }
.gap-card.is-gap p { color: var(--md-on-surface); }
.gap-card.is-ok { background: var(--md-tertiary-cont); border-color: var(--md-tertiary-cont); }
.gap-card.is-ok .gap-status { background: var(--md-tertiary); color: var(--md-on-primary); }
.gap-card.is-ok p { color: var(--md-on-tertiary-cont); }

/* ---------- KPI tonal cards ---------- */
.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-2); margin-bottom: var(--sp-4); }
.kpi {
  border-radius: var(--r-sm); padding: var(--sp-3); box-shadow: var(--shadow-1);
  background: var(--md-surface-cont); transition: box-shadow .2s ease;
}
.kpi:hover { box-shadow: var(--shadow-2); }
.kpi-label { font-size: 13px; font-weight: 500; color: var(--md-on-surface-var); margin-bottom: 4px; }
.kpi-value {
  font-family: var(--font-display); font-variant-numeric: tabular-nums;
  font-size: 30px; font-weight: 800; letter-spacing: -.02em;
}
.kpi-value.small { font-size: 24px; }
/* gold highlighter on the savings figure · gold is reserved for savings */
.kpi-value.is-gold {
  background: linear-gradient(transparent 62%, var(--md-gold) 62%);
  display: inline-block; padding: 0 4px; border-radius: 4px;
}
.kpi.k1 { background: var(--md-primary-cont); color: var(--md-on-primary-cont); }
.kpi.k1 .kpi-label { color: var(--md-on-primary-cont); opacity: .8; }
.kpi.k2 { background: var(--md-secondary-cont); color: var(--md-on-secondary-cont); }
.kpi.k2 .kpi-label { color: var(--md-on-secondary-cont); opacity: .8; }
.kpi.k3 { background: var(--md-tertiary-cont); color: var(--md-on-tertiary-cont); }
.kpi.k3 .kpi-label { color: var(--md-on-tertiary-cont); opacity: .8; }
.result-kpis .kpi.k3 { grid-column: 1 / -1; }
.result-kpis .kpi.k3 .kpi-value { font-size: 38px; }

/* Hardware mixer (contract steppers) */
.hw-mixer {
  display: flex; align-items: center; gap: var(--sp-4); flex-wrap: wrap;
  background: var(--md-surface-cont); border-radius: 16px;
  padding: 12px 18px; margin-bottom: var(--sp-3);
}
.hw-item { display: flex; align-items: center; gap: 12px; }
.hw-name { font: 600 14px var(--font-display, 'Outfit', sans-serif); color: var(--md-on-surface); }
.hw-price { font: 500 13px var(--font-mono, 'Roboto Mono', monospace); color: var(--md-on-surface-var); font-variant-numeric: tabular-nums; }
.stepper { display: inline-flex; align-items: center; gap: 2px; background: var(--md-surface-hi); border: 1px solid var(--md-outline-var); border-radius: 100px; padding: 3px; }
.step-btn {
  width: 34px; height: 34px; border-radius: 50%; border: none; cursor: pointer;
  background: transparent; color: var(--md-primary); font: 600 18px/1 var(--font-body, 'Inter', sans-serif);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .15s ease, transform .15s ease;
}
.step-btn:hover:not(:disabled) { background: var(--md-primary-cont); }
.step-btn:active:not(:disabled) { transform: scale(.92); }
.step-btn:disabled { color: var(--md-outline-var); cursor: not-allowed; }
.step-btn:focus-visible { outline: 3px solid var(--md-primary); outline-offset: 2px; }
.stepper-count { min-width: 26px; text-align: center; font: 600 15px var(--font-body, 'Inter', sans-serif); color: var(--md-on-surface); font-variant-numeric: tabular-nums; }
.hw-note { flex: 1 1 100%; font: 400 12.5px var(--font-body, 'Inter', sans-serif); color: var(--md-on-surface-var); margin: 0; }
@media (max-width: 639px) {
  .hw-mixer { flex-direction: column; align-items: stretch; }
  .hw-item { justify-content: space-between; }
}

/* ---------- Gateway visual ---------- */
.gateway-visual { margin-bottom: var(--sp-4); }
.gw-title { font-family: var(--font-display); font-size: 18px; font-weight: 700; margin-bottom: var(--sp-3); }
.gw-controls { display: grid; grid-template-columns: 1fr 1fr auto; gap: var(--sp-3); align-items: end; margin-bottom: var(--sp-3); }
.gw-slider { min-width: 0; }
.field-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-2); margin-bottom: var(--sp-1); }
.range-val { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--md-primary); }
input[type="range"] {
  width: 100%; accent-color: var(--md-primary); min-height: 44px; cursor: pointer;
}
#gwDiagram, #crossChart { width: 100%; height: auto; min-width: 0; }
/* Diagram node classes (fills set here; strokes inline via app.js) */
.gw-node { fill: var(--md-surface-cont); stroke: var(--md-outline-var); stroke-width: 1; }
.gw-node-accent { fill: var(--md-primary-cont); stroke: var(--md-primary); stroke-width: 1.5; }
.gw-node-label {
  font-family: var(--font-display); font-size: 14px; font-weight: 700; fill: var(--md-on-surface);
}
.gw-sub-label { font-family: var(--font-mono); font-size: 11px; fill: var(--md-on-surface-var); }
.gw-share { font-family: var(--font-mono); font-size: 11px; fill: var(--md-on-surface-var); }
.gw-eur { font-family: var(--font-mono); font-size: 10.5px; fill: var(--md-on-surface-var); }
.gw-flow { fill: none; stroke-linecap: round; }

/* Gateway map: people and apps -> gateway -> private AI / frontier */
.gw-lede { font-size: 14px; color: var(--md-on-surface-var); margin: calc(-1 * var(--sp-2)) 0 var(--sp-3); }
.gw-map {
  display: grid; align-items: center;
  grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1.15fr) 56px minmax(0, 1fr);
  margin: 0 0 var(--sp-4); padding: var(--sp-5) var(--sp-4) var(--sp-3);
  background:
    radial-gradient(120% 90% at 50% 45%, rgba(var(--md-primary-rgb), .07), transparent 70%),
    linear-gradient(160deg, var(--md-surface) 0%, var(--md-surface-cont) 100%);
  border: 1px solid var(--md-outline-var); border-radius: 20px;
}
.gw-node-card {
  position: relative; display: flex; align-items: center; gap: 12px;
  background: var(--md-surface-hi); border: 1px solid var(--md-outline-var);
  border-radius: 16px; padding: 14px; box-shadow: var(--shadow-1);
}
.gw-node-card h4 { font: 700 15px var(--font-display); color: var(--md-on-surface); margin: 0 0 2px; }
.gw-node-card p { font-size: 12.5px; line-height: 1.4; color: var(--md-on-surface-var); margin: 0; }
.gw-icon {
  flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: var(--r-sm);
}
.gw-icon-src { background: var(--md-primary-cont); color: var(--md-primary); }
.gw-icon-hub { background: var(--md-primary); color: var(--md-on-primary); }
.gw-icon-private { background: var(--md-tertiary-cont); color: var(--md-tertiary); }
.gw-icon-frontier { background: var(--md-surface-cont); color: var(--md-on-surface-var); }
.gw-gateway {
  background: var(--md-primary-cont); border: 1.5px solid var(--md-primary);
  box-shadow: var(--shadow-3); padding: 18px 16px;
}
.gw-gateway h4 { color: var(--md-on-primary-cont); font-size: 16px; }
.gw-caps {
  list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px;
  margin: 0; padding: 0;
}
.gw-caps-top { margin-bottom: 12px; }
.gw-caps-bottom { margin-top: 12px; }
.gw-caps li {
  font: 600 11.5px var(--font-body); color: var(--md-primary);
  background: var(--md-surface-hi); border: 1px solid var(--md-primary);
  border-radius: var(--r-btn); padding: 4px 10px;
}
/* Connector: source -> gateway */
.gw-link { position: relative; height: 28px; }
.gw-link::before {
  content: ''; position: absolute; left: 0; right: 0; top: 50%;
  border-top: 2px solid var(--md-outline-var);
}
/* Connector: gateway stem into the branch column; each target draws its own
   half of the bracket so the lines always land on the card centres. */
.gw-branch { position: relative; align-self: stretch; }
.gw-branch::after {
  content: ''; position: absolute; left: 0; width: 50%; top: 50%;
  border-top: 2px solid var(--md-outline-var);
}
.gw-targets { display: grid; gap: var(--sp-5); }
.gw-target::after {
  content: ''; position: absolute; right: 100%; width: 28px;
  border: 0 solid var(--md-outline-var); border-left-width: 2px;
}
.gw-target:first-child::after {
  top: 50%; bottom: calc(var(--sp-5) / -2 - 1px);
  border-top-width: 2px; border-top-left-radius: 14px;
}
.gw-target:last-child::after {
  top: calc(var(--sp-5) / -2 - 1px); bottom: 50%;
  border-bottom-width: 2px; border-bottom-left-radius: 14px;
}
.gw-target::before {
  content: ''; position: absolute; left: -5px; top: 50%; width: 8px; height: 8px;
  margin-top: -4px; border-radius: 50%; background: var(--md-primary);
}
.gw-tag {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  font: 500 11px var(--font-mono); color: var(--md-on-surface-var); white-space: nowrap;
  background: var(--md-surface-hi); border: 1px solid var(--md-outline-var);
  border-radius: var(--r-btn); padding: 2px 10px;
}
.gw-private { border-color: var(--md-tertiary); }
.gw-target { padding-bottom: 22px; }
.gw-eu { position: absolute; right: 10px; bottom: 6px; width: 20px; height: 20px; opacity: .8; }
.gw-models { position: absolute; right: 12px; bottom: 7px; display: flex; gap: 6px; }
.gw-models img { width: 14px; height: 14px; opacity: .8; }
.gw-map figcaption {
  grid-column: 1 / -1; margin-top: var(--sp-4);
  font-size: 13px; color: var(--md-on-surface-var);
}
@media (max-width: 767px) {
  .gw-map { grid-template-columns: 1fr; padding: var(--sp-4) var(--sp-3) var(--sp-3); }
  .gw-link, .gw-branch { height: 44px; align-self: auto; }
  .gw-link::before, .gw-branch::after {
    left: 50%; right: auto; top: 0; bottom: 0; width: 0; height: auto;
    border: 0; border-left: 2px solid var(--md-outline-var); border-radius: 0;
  }
  .gw-targets { gap: var(--sp-4); }
  .gw-target::before, .gw-target::after { display: none; }
}

/* ---------- Chart card ---------- */
.chart-box {
  background: var(--md-surface-cont); border-radius: 20px; padding: var(--sp-4);
  margin-bottom: var(--sp-4);
}
.chart-legend { display: flex; gap: var(--sp-4); flex-wrap: wrap; margin: var(--sp-2) 0 var(--sp-3); }
.chart-legend span { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--md-on-surface-var); }
.legend-dot { width: 16px; height: 4px; border-radius: 2px; display: inline-block; }
#crossChart .draw { will-change: stroke-dashoffset; }
.verdict-text { font-size: 15px; font-weight: 600; margin-top: var(--sp-2); }
.verdict-note { font-size: 13.5px; color: var(--md-on-surface-var); margin-top: var(--sp-1); }

/* ---------- Gateway-only quick-win strip ---------- */
.gwonly {
  display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap;
  background: var(--md-secondary-cont); color: var(--md-on-secondary-cont);
  border-radius: 20px; padding: var(--sp-3) var(--sp-4); margin-bottom: var(--sp-4);
  font-size: 15px;
}
.gwonly strong { font-variant-numeric: tabular-nums; }

/* ---------- Inline CTA ---------- */
.cta-inline {
  display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap;
  justify-content: space-between; margin-bottom: var(--sp-4);
  background: var(--md-surface-cont); border-radius: 20px; padding: var(--sp-3) var(--sp-4);
}
.cta-inline p { font-size: 15px; font-weight: 500; }

/* ---------- Filter chips (M3) ---------- */
.fchip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; padding: 8px 14px; min-height: 36px;
  border-radius: var(--r-btn); border: 1px solid var(--md-outline-var);
  background: var(--md-surface-hi); color: var(--md-on-surface);
}
.fchip.on { background: var(--md-secondary-cont); border-color: transparent; color: var(--md-on-secondary-cont); }
.fchip .ck { display: none; }
.fchip.on .ck { display: flex; }
.fchip-note { color: var(--md-outline); font-weight: 400; margin-left: 2px; }
.fchip.hot { border-color: var(--md-tertiary); color: var(--md-tertiary); }

/* ---------- Talk CTA slab ---------- */
.talk-cta {
  position: relative; border-radius: var(--r-card); background: var(--md-primary);
  color: var(--md-on-primary); padding: var(--sp-6) var(--sp-5);
  max-width: 1020px; margin: 0 auto; overflow: hidden; text-align: left;
}
.talk-cta .section-head { text-align: left; margin: 0 0 var(--sp-4); max-width: none; }
.talk-cta .eyebrow { color: rgba(255,255,255,.85); }
.talk-cta h2 { color: var(--md-on-primary); max-width: 24ch; }
.talk-cta .section-head p { color: rgba(255,255,255,.88); max-width: 62ch; }
.cta-em { color: var(--md-gold); }
.talk-cta .blob { position: absolute; border-radius: 50%; opacity: .18; pointer-events: none; }
.talk-cta .b1 { width: 300px; height: 300px; background: var(--md-tertiary-cont); top: -120px; right: -80px; }
.talk-cta .b2 { width: 220px; height: 220px; background: var(--md-gold); bottom: -100px; left: -60px; opacity: .14; }
.talk-actions { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; position: relative; }
.talk-actions .btn { background: var(--md-surface-hi); color: var(--md-primary); }
.talk-actions .btn:hover { box-shadow: var(--shadow-2); }
.talk-actions .hero-hint { color: rgba(255,255,255,.75); }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--sp-2); }
.faq-item, .faq details {
  background: var(--md-surface-hi); border-radius: var(--r-sm);
  border: 1px solid var(--md-outline-var); overflow: hidden;
}
.faq summary, .faq-item summary {
  display: flex; align-items: center; gap: var(--sp-3); cursor: pointer; list-style: none;
  padding: var(--sp-3) var(--sp-4); min-height: 56px; font-weight: 600; font-size: 16px;
}
.faq summary::-webkit-details-marker, .faq-item summary::-webkit-details-marker { display: none; }
.faq summary:hover { background: var(--md-surface-cont); }
.faq summary svg:last-child, .faq summary .caret { flex: none; }
.faq .caret {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--md-primary-cont); color: var(--md-on-primary-cont);
  display: flex; align-items: center; justify-content: center;
  transition: transform .2s ease;
}
.faq details[open] .caret { transform: rotate(180deg); }
.faq .answer {
  padding: 0 var(--sp-4) var(--sp-4) 60px;
  color: var(--md-on-surface-var); font-size: 15px;
}

/* ---------- Footer ---------- */
footer { margin-top: var(--sp-7); padding: var(--sp-6) 0 var(--sp-4); background: var(--md-surface-cont); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr; gap: var(--sp-4); }
.footer-brand { font-family: var(--font-display); font-weight: 800; font-size: 20px; color: var(--md-primary); margin-bottom: var(--sp-1); }
.footer-note { font-size: 13px; color: var(--md-on-surface-var); max-width: 56ch; }
.footer-links { display: flex; flex-direction: column; gap: var(--sp-1); align-items: flex-start; }
.footer-links .nav-link { padding: 6px 0; min-height: 0; border-radius: var(--r-sm); }
.footer-links .nav-link:hover { background: none; color: var(--md-primary); }
.footer-legal {
  margin-top: var(--sp-4); padding-top: var(--sp-3); border-top: 1px solid var(--md-outline-var);
  font-family: var(--font-mono); font-size: 12px; color: var(--md-outline);
}

/* ---------- Motion ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in-view { opacity: 1; transform: none; }
.fade { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.fade.in { opacity: 1; transform: none; }
.count-up { font-variant-numeric: tabular-nums; }

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .hero-h1 { font-size: 44px; }
  .gw-controls { grid-template-columns: 1fr; align-items: stretch; }
}
@media (max-width: 767px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-3 > :nth-child(3) { grid-column: 1 / -1; }
  .gap-grid { grid-template-columns: 1fr 1fr; }
  .gap-grid > :nth-child(3) { grid-column: 1 / -1; }
}
@media (max-width: 639px) {
  .nav-links .nav-link { display: none; }
  .hero { padding-top: var(--sp-5); }
  .hero-h1 { font-size: 34px; }
  .stat-grid, .grid-3, .kpi-grid, .gap-grid { grid-template-columns: 1fr; }
  .grid-3 > :nth-child(3) { grid-column: auto; }
  .section { padding: var(--sp-6) 0; }
  .section-head h2 { font-size: 26px; }
  .wizard-progress, .wizard-body, .wizard-nav { padding-left: var(--sp-4); padding-right: var(--sp-4); }
  .qstep { padding: var(--sp-4); }
  .wizard-nav { flex-direction: column; align-items: stretch; }
  .wizard-nav .btn { width: 100%; }
  .footer-inner { grid-template-columns: 1fr; }
  .cta-inline { flex-direction: column; align-items: stretch; text-align: center; }
}

/* ---------- Reduced motion: global kill ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal, .fade { opacity: 1; transform: none; }
  .hero-h1 .word { opacity: 1; transform: none; }
  .updated { animation: none !important; }
}

/* ---------------- Readiness scan ---------------- */
.scan {
  background: var(--md-surface-hi); border-radius: 28px; box-shadow: var(--shadow-2);
  padding: var(--sp-5); max-width: 880px; margin: 0 auto;
}
.scan-meter { display: flex; align-items: center; gap: 16px; margin-bottom: var(--sp-4); }
.scan-meter .progress-track { flex: 1; max-width: none; }
.scan-count { font: 500 13px var(--font-mono); color: var(--md-on-surface-var); white-space: nowrap; font-variant-numeric: tabular-nums; }
.scan-list { list-style: none; margin: 0; padding: 0; }
.scan-item { padding: var(--sp-4) 0; border-top: 1px solid var(--md-outline-var); }
.scan-item:first-child { border-top: 0; padding-top: 0; }
.scan-q {
  font: 600 17px/1.45 var(--font-display); color: var(--md-on-surface);
  margin: 0 0 12px; display: flex; gap: 12px; align-items: baseline;
}
.scan-num { font: 600 12px var(--font-mono); color: var(--md-primary); flex: none; }
.scan-yn { display: flex; gap: 8px; flex-wrap: wrap; }
.scan-yn .yn { width: auto; min-width: 140px; }
.scan-note { margin: 10px 0 0; font-size: 14.5px; line-height: 1.55; border-radius: 12px; padding: 10px 14px; }
.scan-note.is-yes { background: var(--md-tertiary-cont); color: var(--md-on-tertiary-cont); }
.scan-note.is-no { background: var(--md-error-cont); color: var(--md-error); }
.scan-result {
  margin-top: var(--sp-4); background: var(--md-primary-cont); color: var(--md-on-primary-cont);
  border-radius: 20px; padding: var(--sp-4) var(--sp-5);
}
.scan-result h3 { font: 700 26px var(--font-display); margin: 0 0 8px; }
.scan-result p { margin: 0 0 var(--sp-3); opacity: .92; max-width: 60ch; }
.scan-result .btn { background: var(--md-primary); color: var(--md-on-primary); }
@media (max-width: 639px) {
  .scan { padding: var(--sp-4); }
  .scan-yn .yn { flex: 1 1 auto; min-width: 0; }
  .scan-result { padding: var(--sp-4); }
}

/* ---------------- Sovereign setup diagram (router + hardware) ---------------- */
.hw-title { font: 600 13px var(--font-display); fill: var(--md-on-surface); }
.hw-sub { font: 500 11px var(--font-mono); fill: var(--md-on-surface-var); }
.hw-sub-dim { font: 500 11px var(--font-mono); fill: var(--md-outline); }
.stack-line {
  font: 500 14px var(--font-body); color: var(--md-on-surface-var);
  margin: 12px 0 var(--sp-3); font-variant-numeric: tabular-nums;
}
.q-actions { display: flex; gap: var(--sp-2); margin-top: var(--sp-4); }