/* ============================================================
   DESIGN A — Woodward Heating premium-funnel
   Design system: Datum (Judd × Vignelli) remapped to [data-design="a"]
   Cast, gridded, signage-clear. Corten accent = the single hot element.
   ============================================================ */

[data-design="a"] {
  /* color — portland-cement neutrals + corten + signal yellow */
  --datum-bg:            #ECEAE4;
  --datum-surface:       #F6F4EE;
  --datum-surface-warm:  #E4DFD3;
  --datum-ink:           #18181B;
  --datum-ink-2:         #33343A;
  --datum-muted:         #7A7B82;
  --datum-meta:          #9C9CA1;
  --datum-border:        #D4D0C8;
  --datum-border-strong: #1F1F22;
  --datum-accent:        #9E4221;
  --datum-accent-hover:  #8A381A;
  --datum-accent-active: #76300F;
  --datum-flag:          #E5B100;
  --datum-success:       #4A6B43;
  --datum-accent-on:     #F6F4EE;

  /* exposed primary token (contract) */
  --design-a-primary:    #9E4221;

  /* type */
  --datum-font-display: 'Helvetica Neue', 'Inter Tight', 'Arial', system-ui, sans-serif;
  --datum-font-body:    'Helvetica Neue', 'Inter',       'Arial', system-ui, sans-serif;
  --datum-font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, Menlo, monospace;

  /* spacing */
  --datum-step-3: 12px; --datum-step-4: 20px; --datum-step-5: 32px;
  --datum-step-6: 56px; --datum-step-7: 96px;

  /* motion */
  --datum-dur-snap: 100ms;
  --datum-dur-set:  240ms;
  --datum-dur-arc:  1800ms;
  --datum-dur-light: 26000ms;
  --datum-ease-set:  cubic-bezier(0.22, 0.61, 0.36, 1);
  --datum-ease-arc:  cubic-bezier(0.45, 0, 0.55, 1);

  background: var(--datum-bg);
  color: var(--datum-ink);
  font-family: var(--datum-font-body);
}

[data-design="a"].dq-design {
  display: block;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

[data-design="a"] .visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- ELEMENT 1 — header (logo + ONE atmosphere layer + hamburger) ---------- */
[data-design="a"] .rf-header {
  position: sticky; top: 0; z-index: 30;
  background: var(--datum-bg);
  border-bottom: 1px solid var(--datum-border);
  box-sizing: border-box;
}
[data-design="a"] .rf-header__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(20px, 4vw, 56px);
  position: relative; z-index: 2;
}
[data-design="a"] .rf-logo {
  position: relative;
  font-family: var(--datum-font-display);
  font-weight: 600; font-size: clamp(18px, 3vw, 22px);
  letter-spacing: -0.01em; color: var(--datum-ink);
  text-decoration: none; overflow: hidden;
}
/* logo shimmer — slow light-glint across the wordmark (Element 1 register) */
[data-design="a"] .rf-logo__glint {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(100deg, transparent 40%,
    rgba(255,255,255,0.85) 50%, transparent 60%);
  mix-blend-mode: overlay;
  transform: translateX(-130%);
  animation: a-logo-glint 11s ease-in-out infinite;
}
@keyframes a-logo-glint {
  0%, 82%, 100% { transform: translateX(-130%); }
  90%           { transform: translateX(130%); }
}
[data-design="a"] .rf-atmosphere {
  position: absolute; inset: auto 0 0 0; height: 2px;
  overflow: hidden; pointer-events: none;
}
[data-design="a"] .rf-atmosphere__hairline {
  position: absolute; top: 0; left: -40%; height: 2px; width: 40%;
  background: linear-gradient(90deg, transparent 0%, var(--datum-accent) 50%, transparent 100%);
  animation: a-light-traverse var(--datum-dur-light) linear infinite;
}
@keyframes a-light-traverse {
  0% { transform: translateX(0); } 100% { transform: translateX(350%); }
}
[data-design="a"] .rf-burger {
  width: 44px; height: 44px;
  display: flex; flex-direction: column; justify-content: center; gap: 6px;
  background: transparent; border: 1px solid var(--datum-border);
  border-radius: 0; cursor: pointer; padding: 0 10px;
  transition: border-color var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-burger__line {
  display: block; height: 2px; background: var(--datum-ink);
  transition: transform var(--datum-dur-set) var(--datum-ease-set),
              opacity var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-burger:hover { border-color: var(--datum-ink); }
[data-design="a"] .rf-burger[aria-expanded="true"] .rf-burger__line:nth-child(1) { transform: translateY(4px) rotate(45deg); }
[data-design="a"] .rf-burger[aria-expanded="true"] .rf-burger__line:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* phone-only drawer (no nav) */
[data-design="a"] .rf-drawer { position: fixed; inset: 0; z-index: 60; }
[data-design="a"] .rf-drawer[hidden] { display: none; }
[data-design="a"] .rf-drawer__backdrop {
  position: absolute; inset: 0; background: var(--datum-bg);
  opacity: 0; transition: opacity var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-drawer.is-open .rf-drawer__backdrop { opacity: 0.92; }
[data-design="a"] .rf-drawer__panel {
  position: absolute; inset: 0 0 auto 0;
  background: var(--datum-surface);
  border-bottom: 2px solid var(--datum-border-strong);
  display: flex; flex-direction: column; gap: 14px;
  padding: clamp(56px, 10vh, 96px) clamp(24px, 6vw, 64px) 40px;
  transform: translateY(-100%);
  transition: transform var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-drawer.is-open .rf-drawer__panel { transform: translateY(0); }
[data-design="a"] .rf-drawer__x {
  position: absolute; top: 16px; right: 16px;
  width: 44px; height: 44px; background: transparent;
  border: 1px solid var(--datum-border); border-radius: 0;
  font-size: 26px; line-height: 1; color: var(--datum-ink); cursor: pointer;
}
[data-design="a"] .rf-drawer__x:hover { border-color: var(--datum-ink); }
[data-design="a"] .rf-drawer__eyebrow {
  font-family: var(--datum-font-mono); font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--datum-meta);
}
[data-design="a"] .rf-drawer__phone {
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(32px, 8vw, 48px); letter-spacing: -0.02em;
  color: var(--datum-accent); text-decoration: none;
}
[data-design="a"] .rf-drawer__lic {
  font-family: var(--datum-font-mono); font-size: 13px; color: var(--datum-muted);
}

/* ---------- THE FUNNEL PAGE (Element 5) ---------- */
[data-design="a"] .rf-funnel-page {
  max-width: 720px; margin: 0 auto;
  padding: clamp(20px, 4vw, 40px) clamp(20px, 5vw, 40px) clamp(40px, 6vw, 72px);
}
[data-design="a"] .rf-funnel__head { margin-bottom: var(--datum-step-5); }

/* progress (quiet — anti-abandon, never bold) */
[data-design="a"] .rf-progress {
  display: flex; flex-direction: column; gap: 8px; margin-bottom: var(--datum-step-5);
}
[data-design="a"] .rf-progress__count {
  font-family: var(--datum-font-mono); font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--datum-muted);
}
[data-design="a"] .rf-progress__bar {
  position: relative; height: 2px; width: 100%;
  background: var(--datum-border); overflow: hidden;
}
[data-design="a"] .rf-progress__fill {
  position: absolute; inset: 0 auto 0 0; height: 2px; width: 20%;
  background: var(--datum-border-strong);
  transition: width 480ms var(--datum-ease-set);
}

/* ---------- ELEMENT 6 — the signature pointer (bold, playful, above the form) ---------- */
[data-design="a"] .rf-pointer {
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end;
  gap: 4px; min-height: 56px; opacity: 1;
  color: var(--datum-accent);
}
[data-design="a"] .rf-pointer__label {
  font-family: var(--datum-font-mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--datum-accent);
}
[data-design="a"] .rf-pointer__mark {
  display: block; color: var(--datum-accent);
  /* authored motion: anticipation (rear up), follow-through (plant down), settle. ~2.4s loop. */
  transform-origin: 50% 30%;
  animation: a-pointer-plant 2.4s cubic-bezier(0.34, 1.32, 0.5, 1) infinite;
}
@keyframes a-pointer-plant {
  0%   { transform: translateY(-5px) scaleY(0.94); }
  18%  { transform: translateY(-8px) scaleY(0.90); }  /* anticipation: rear up */
  46%  { transform: translateY(5px)  scaleY(1.06); }  /* follow-through: plant */
  60%  { transform: translateY(2px)  scaleY(0.98); }  /* settle bounce */
  100% { transform: translateY(-5px) scaleY(0.94); }
}
/* pointer re-rests with a snap each step (added by JS) */
[data-design="a"] .rf-pointer.is-rerest .rf-pointer__mark { animation: none; }
[data-design="a"] .rf-pointer.is-rerest .rf-pointer__label { color: var(--datum-ink); }

/* ---------- STEPS ---------- */
[data-design="a"] .rf-step {
  display: grid; gap: var(--datum-step-4);
  opacity: 0; transform: translateX(20px);
  transition: opacity var(--datum-dur-set) var(--datum-ease-set),
              transform var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-step[hidden] { display: none; }
[data-design="a"] .rf-step.is-active { opacity: 1; transform: translateX(0); }

/* hero step (Step 1): text opacity:1 at FIRST PAINT — never reveal-gated */
[data-design="a"] .rf-step--hero {
  position: relative; opacity: 1; transform: none;
  min-height: 72vh; align-content: center;
  padding: clamp(16px, 4vh, 40px) 0;
}
/* hero substrate — ONE animated layer, arrival + sustained ambient, NO directional primitive */
[data-design="a"] .rf-hero__substrate {
  position: absolute; inset: -10% -20% auto -20%; height: 120%;
  z-index: 0; pointer-events: none; opacity: 0;
  background:
    repeating-linear-gradient(90deg,
      transparent 0, transparent 78px,
      color-mix(in oklab, var(--datum-border-strong), transparent 82%) 78px,
      color-mix(in oklab, var(--datum-border-strong), transparent 82%) 80px);
  -webkit-mask-image: radial-gradient(120% 80% at 30% 40%, #000 0%, transparent 72%);
          mask-image: radial-gradient(120% 80% at 30% 40%, #000 0%, transparent 72%);
  animation: a-hero-arrive 1.6s var(--datum-ease-set) forwards,
             a-hero-drift 22s linear infinite 1.6s;
}
@keyframes a-hero-arrive {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 0.7; transform: translateX(0); }
}
@keyframes a-hero-drift {           /* sustained ambient: slow gridline traverse */
  from { background-position: 0 0; }
  to   { background-position: 80px 0; }
}
[data-design="a"] .rf-step--hero > *:not(.rf-hero__substrate) { position: relative; z-index: 1; }

[data-design="a"] .rf-step__valueprop {
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(28px, 5.2vw, 48px); line-height: 1.08;
  letter-spacing: -0.02em; color: var(--datum-ink);
  margin: 0; max-width: 16ch;
}
[data-design="a"] .rf-step__reassure {
  font-size: clamp(15px, 2.4vw, 17px); line-height: 1.55;
  color: var(--datum-muted); margin: 0; max-width: 56ch;
}
[data-design="a"] .rf-step__q {
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(22px, 4vw, 32px); line-height: 1.15;
  letter-spacing: -0.01em; color: var(--datum-ink); margin: 0;
  padding-top: 4px; border-top: 0;
}

/* ---------- ELEMENT 2 — answer buttons (step-advance) ---------- */
[data-design="a"] .rf-options { display: grid; gap: 16px; }
[data-design="a"] .rf-option {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  width: 100%; min-height: 60px; padding: 16px 20px;
  background: var(--datum-surface); color: var(--datum-ink);
  border: 1px solid var(--datum-border); border-radius: 0;
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(16px, 2.6vw, 18px); letter-spacing: 0.01em;
  text-align: left; cursor: pointer;
  transition: border-color var(--datum-dur-set) var(--datum-ease-set),
              background-color var(--datum-dur-set) var(--datum-ease-set),
              transform var(--datum-dur-snap) var(--datum-ease-set);
}
[data-design="a"] .rf-option:hover {
  border-color: var(--datum-ink); background: var(--datum-surface-warm);
}
[data-design="a"] .rf-option:focus-visible {
  outline: 2px solid var(--datum-accent); outline-offset: 3px;
}
[data-design="a"] .rf-option__chev {
  font-size: 24px; color: var(--datum-muted); line-height: 1;
  transform: translateX(0); opacity: 0;
  transition: transform var(--datum-dur-set) var(--datum-ease-set),
              opacity var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-option:hover .rf-option__chev,
[data-design="a"] .rf-option:focus-visible .rf-option__chev {
  opacity: 1; transform: translateX(4px); color: var(--datum-accent);
}
/* checked stamp persists ~200ms before advance (60ms snap on press) */
[data-design="a"] .rf-option.is-picked {
  background: var(--datum-accent); color: var(--datum-accent-on);
  border-color: var(--datum-accent); transition-duration: 60ms;
}
[data-design="a"] .rf-option.is-picked .rf-option__chev { opacity: 1; color: var(--datum-accent-on); }
[data-design="a"] .rf-option:active { transform: translateY(1px); }

/* enter-stagger for option rows (≤200ms per button, once) */
[data-design="a"] .rf-step.is-active .rf-option {
  animation: a-option-in 0.32s var(--datum-ease-set) backwards;
}
[data-design="a"] .rf-step.is-active .rf-option:nth-child(1) { animation-delay: 0.04s; }
[data-design="a"] .rf-step.is-active .rf-option:nth-child(2) { animation-delay: 0.10s; }
[data-design="a"] .rf-step.is-active .rf-option:nth-child(3) { animation-delay: 0.16s; }
[data-design="a"] .rf-step.is-active .rf-option:nth-child(4) { animation-delay: 0.22s; }
[data-design="a"] .rf-step.is-active .rf-option:nth-child(5) { animation-delay: 0.28s; }
@keyframes a-option-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- contact step ---------- */
[data-design="a"] .rf-contact { display: grid; gap: var(--datum-step-4); }
[data-design="a"] .rf-field { display: grid; gap: 6px; }
[data-design="a"] .rf-field__label {
  font-family: var(--datum-font-mono); font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--datum-meta);
}
[data-design="a"] .rf-field input {
  font-family: var(--datum-font-body); font-size: 17px; color: var(--datum-ink);
  border: 1px solid var(--datum-border); background: var(--datum-bg);
  padding: 14px 14px; border-radius: 0; outline: none; min-height: 52px;
  transition: border-color var(--datum-dur-snap) var(--datum-ease-set),
              box-shadow var(--datum-dur-snap) var(--datum-ease-set);
}
[data-design="a"] .rf-field input:focus {
  border-color: var(--datum-accent);
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--datum-accent), transparent 70%);
}
[data-design="a"] .rf-field.is-error input { border-color: var(--datum-accent-active); }
[data-design="a"] .rf-submit {
  margin-top: var(--datum-step-3);
  min-height: 60px; padding: 18px 26px;
  background: var(--datum-accent); color: var(--datum-accent-on);
  border: 1px solid transparent; border-radius: 0; cursor: pointer;
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(17px, 3vw, 20px); letter-spacing: 0.02em;
  transition: background-color var(--datum-dur-set) var(--datum-ease-set), transform var(--datum-dur-snap) var(--datum-ease-set);
}
[data-design="a"] .rf-submit:hover { background: var(--datum-accent-hover); }
[data-design="a"] .rf-submit:active { background: var(--datum-accent-active); transform: translateY(1px); }
[data-design="a"] .rf-submit:focus-visible { outline: 2px solid var(--datum-accent); outline-offset: 4px; }

/* ---------- conversion payoff ---------- */
[data-design="a"] .rf-payoff {
  display: grid; gap: var(--datum-step-4); padding: var(--datum-step-6) 0;
  animation: a-option-in var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-payoff[hidden] { display: none; }
[data-design="a"] .rf-payoff__stamp {
  justify-self: start; padding: 6px 12px;
  border: 2px solid var(--datum-accent); color: var(--datum-accent);
  font-family: var(--datum-font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; transform: rotate(-2deg);
}
[data-design="a"] .rf-payoff__head {
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(26px, 5vw, 40px); line-height: 1.1;
  letter-spacing: -0.02em; margin: 0; color: var(--datum-ink);
}
[data-design="a"] .rf-payoff__sub { font-size: 17px; line-height: 1.55; color: var(--datum-ink-2); margin: 0; max-width: 56ch; }
[data-design="a"] .rf-payoff__call {
  justify-self: start; display: inline-flex; align-items: center;
  min-height: 60px; padding: 18px 28px;
  background: var(--datum-accent); color: var(--datum-accent-on);
  font-family: var(--datum-font-display); font-weight: 600;
  font-size: clamp(18px, 3.4vw, 22px); letter-spacing: 0.02em;
  text-decoration: none; border-radius: 0;
  transition: background-color var(--datum-dur-set) var(--datum-ease-set);
}
[data-design="a"] .rf-payoff__call:hover { background: var(--datum-accent-hover); }
[data-design="a"] .rf-payoff__note { font-family: var(--datum-font-mono); font-size: 13px; color: var(--datum-muted); margin: 0; }

/* ---------- ELEMENT 4 — reassurance marquee (below funnel) ---------- */
[data-design="a"] .rf-reassure {
  border-top: 1px solid var(--datum-border);
  border-bottom: 1px solid var(--datum-border);
  background: var(--datum-surface); overflow: hidden; padding: 20px 0;
}
[data-design="a"] .rf-reassure__track {
  display: flex; align-items: center; gap: 28px; width: max-content;
  white-space: nowrap; animation: a-marquee 32s linear infinite;
}
[data-design="a"] .rf-reassure__item {
  font-family: var(--datum-font-display); font-weight: 500;
  font-size: clamp(14px, 2.4vw, 17px); color: var(--datum-ink-2);
}
[data-design="a"] .rf-reassure__sep { color: var(--datum-accent); font-family: var(--datum-font-mono); }
@keyframes a-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- footer ---------- */
[data-design="a"] .rf-footer {
  max-width: 720px; margin: 0 auto;
  padding: var(--datum-step-6) clamp(20px, 5vw, 40px) var(--datum-step-7);
  display: grid; gap: 8px;
}
[data-design="a"] .rf-footer__row {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px;
  border-top: 2px solid var(--datum-border-strong); padding-top: var(--datum-step-4); margin-bottom: 8px;
}
[data-design="a"] .rf-footer__name {
  font-family: var(--datum-font-display); font-weight: 600; font-size: 18px; color: var(--datum-ink);
}
[data-design="a"] .rf-footer__phone {
  font-family: var(--datum-font-display); font-weight: 600; font-size: 18px;
  color: var(--datum-accent); text-decoration: none;
}
[data-design="a"] .rf-footer__meta,
[data-design="a"] .rf-footer__disc,
[data-design="a"] .rf-footer__copy {
  font-family: var(--datum-font-mono); font-size: 12px; line-height: 1.6;
  color: var(--datum-muted); margin: 0;
}
[data-design="a"] .rf-footer__copy { color: var(--datum-meta); margin-top: 8px; }

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  [data-design="a"] .rf-atmosphere__hairline { animation: none; opacity: 0.4; transform: translateX(140%); }
  [data-design="a"] .rf-logo__glint { animation: none; opacity: 0; }
  [data-design="a"] .rf-hero__substrate { animation: none; opacity: 0.55; }
  [data-design="a"] .rf-pointer__mark { animation: none; transform: translateY(2px); }
  [data-design="a"] .rf-reassure__track { animation: none; }
  [data-design="a"] .rf-step { transition: none; }
  [data-design="a"] .rf-step.is-active .rf-option { animation: none; }
  [data-design="a"] .rf-progress__fill { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 560px) {
  [data-design="a"] .rf-header__bar { padding: 14px 20px; }
  [data-design="a"] .rf-step--hero { min-height: 78vh; }
  [data-design="a"] .rf-footer__row { flex-direction: column; }
}

/* ============================================================
   MOBILE OVERFLOW GUARD — append at bottom (contract)
   ============================================================ */
[data-design="a"].dq-design,
[data-design="a"] .dq-design { max-width: 100%; overflow-x: clip; }
[data-design="a"] * { min-width: 0; }
[data-design="a"] img,
[data-design="a"] svg:not([data-keep-size]) { max-width: 100%; height: auto; }

/* Phase-3.4 hero visibility floor (forge_assemble) */
[data-design="a"] [data-mf-role="hero"] :is(h1,h2,p,.headline,.subtitle,.proof,[class*="headline"],[class*="subtitle"],[class*="proof"]),
[data-design="a"] [data-mf-role="cta"] { opacity: 1 !important; }