/* ============================================================================
   Plain Talk Developers — components.css
   All `pt-*` components live here. Consumes tokens.css ONLY.
   ============================================================================ */

/* ============================================================================
   pt-btn — primary | secondary | ghost · sm | md | lg · optional arrow icon
   ============================================================================ */
.pt-btn {
  --_btn-pad-y: var(--space-3);
  --_btn-pad-x: var(--space-5);
  --_btn-font-size: var(--font-size-base);
  --_btn-gap: var(--space-2);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--_btn-gap);
  padding: var(--_btn-pad-y) var(--_btn-pad-x);
  font-family: var(--font-family-sans);
  font-size: var(--_btn-font-size);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  letter-spacing: var(--letter-spacing-tight);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  transition: background-color var(--duration-fast) var(--easing-standard),
              border-color var(--duration-fast) var(--easing-standard),
              color var(--duration-fast) var(--easing-standard),
              transform var(--duration-fast) var(--easing-standard),
              box-shadow var(--duration-fast) var(--easing-standard);
}
.pt-btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-ring);
}
.pt-btn:disabled,
.pt-btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* sizes */
.pt-btn--sm { --_btn-pad-y: var(--space-2); --_btn-pad-x: var(--space-4); --_btn-font-size: var(--font-size-sm); }
.pt-btn--lg { --_btn-pad-y: var(--space-4); --_btn-pad-x: var(--space-6); --_btn-font-size: var(--font-size-md); }

/* variant: primary */
.pt-btn--primary {
  background: var(--color-accent-bg);
  color: var(--color-accent-fg);
  border-color: var(--color-accent-bg);
}
.pt-btn--primary:hover { background: var(--color-accent-bg-hover); border-color: var(--color-accent-bg-hover); }
.pt-btn--primary:active { background: var(--color-accent-bg-active); border-color: var(--color-accent-bg-active); transform: translateY(1px); }

/* variant: secondary */
.pt-btn--secondary {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}
.pt-btn--secondary:hover { border-color: var(--color-text-primary); }
.pt-btn--secondary:active { background: var(--color-bg-muted); transform: translateY(1px); }
[data-theme="dark"] .pt-btn--secondary { background: transparent; }

/* variant: ghost */
.pt-btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  border-color: transparent;
}
.pt-btn--ghost:hover { background: var(--color-bg-muted); }
.pt-btn--ghost:active { background: var(--color-bg-sunken); }

/* arrow icon — slides on hover */
.pt-btn__arrow {
  display: inline-block;
  width: 1em;
  height: 1em;
  transition: transform var(--duration-base) var(--easing-standard);
}
.pt-btn:hover .pt-btn__arrow { transform: translateX(3px); }

@media (prefers-reduced-motion: reduce) {
  .pt-btn, .pt-btn__arrow { transition: none; }
  .pt-btn:hover .pt-btn__arrow { transform: none; }
  .pt-btn:active { transform: none; }
}

/* ============================================================================
   pt-input · pt-textarea · pt-select — label, helper, error
   ============================================================================ */
.pt-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.pt-field__label {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  letter-spacing: var(--letter-spacing-tight);
}
.pt-field__label--required::after {
  content: " *";
  color: var(--color-feedback-error-fg);
}
.pt-field__hint {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-snug);
}
.pt-field__error {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  color: var(--color-feedback-error-strong);
  line-height: var(--line-height-snug);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.pt-input,
.pt-textarea,
.pt-select {
  width: 100%;
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-snug);
  color: var(--color-text-primary);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--duration-fast) var(--easing-standard),
              box-shadow var(--duration-fast) var(--easing-standard);
}
.pt-input::placeholder,
.pt-textarea::placeholder { color: var(--color-text-muted); }

.pt-input:hover,
.pt-textarea:hover,
.pt-select:hover { border-color: var(--color-text-primary); }

.pt-input:focus-visible,
.pt-textarea:focus-visible,
.pt-select:focus-visible {
  outline: none;
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-ring);
}

.pt-input:disabled,
.pt-textarea:disabled,
.pt-select:disabled {
  background: var(--color-bg-muted);
  color: var(--color-text-disabled);
  cursor: not-allowed;
}

.pt-textarea {
  resize: vertical;
  min-height: 7rem;
  font-family: var(--font-family-sans);
}

/* error state */
.pt-field--error .pt-input,
.pt-field--error .pt-textarea,
.pt-field--error .pt-select {
  border-color: var(--color-feedback-error-strong);
}
.pt-field--error .pt-input:focus-visible,
.pt-field--error .pt-textarea:focus-visible,
.pt-field--error .pt-select:focus-visible {
  box-shadow: var(--shadow-ring-error);
}

/* select chevron */
.pt-select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none' stroke='%23100F0C' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='3 4.5 6 7.5 9 4.5'/></svg>");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  background-size: 12px 12px;
  padding-right: var(--space-10);
}
[data-theme="dark"] .pt-select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none' stroke='%23FAFAF7' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='3 4.5 6 7.5 9 4.5'/></svg>");
}

/* ============================================================================
   pt-card — default | elevated | bordered · header/body/footer slots
   ============================================================================ */
.pt-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.pt-card--default  { border: 1px solid var(--color-border-default); }
.pt-card--bordered { border: 1px solid var(--color-border-strong); }
.pt-card--elevated { border: 1px solid var(--color-border-muted); box-shadow: var(--shadow-md); }
[data-theme="dark"] .pt-card--elevated { border-color: var(--color-border-default); }

.pt-card__header,
.pt-card__body,
.pt-card__footer {
  padding: var(--space-6);
}
.pt-card__header {
  border-bottom: 1px solid var(--color-border-default);
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  letter-spacing: var(--letter-spacing-tight);
}
.pt-card__footer {
  border-top: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--color-bg-muted);
}
.pt-card__body { font-family: var(--font-family-sans); color: var(--color-text-secondary); }
.pt-card__body > * + * { margin-top: var(--space-3); }

/* ============================================================================
   pt-nav — top nav + mobile drawer (CSS-only, label-toggled checkbox)
   ============================================================================ */
.pt-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-4) var(--space-6);
  background: var(--color-bg-canvas);
  border-bottom: 1px solid var(--color-border-default);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: saturate(120%) blur(8px);
}
.pt-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: var(--letter-spacing-tight);
}
.pt-nav__brand-mark {
  width: 1.25rem;
  height: 1.25rem;
  background: var(--color-accent-bg);
  border-radius: var(--radius-sm);
  display: inline-block;
}
.pt-nav__links {
  display: none;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.pt-nav__link {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) 0;
  border-bottom: 1px solid transparent;
  transition: color var(--duration-fast) var(--easing-standard),
              border-color var(--duration-fast) var(--easing-standard);
}
.pt-nav__link:hover,
.pt-nav__link[aria-current="page"] {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-accent-bg);
}
.pt-nav__link:focus-visible {
  outline: none;
  color: var(--color-text-primary);
  box-shadow: var(--shadow-ring);
  border-radius: var(--radius-sm);
}
.pt-nav__cta { display: none; }
.pt-nav__burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: var(--space-2);
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  cursor: pointer;
}
.pt-nav__burger:focus-visible { outline: none; box-shadow: var(--shadow-ring); }
.pt-nav__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-pill);
  transition: transform var(--duration-base) var(--easing-standard),
              opacity var(--duration-base) var(--easing-standard);
}

.pt-nav__toggle { display: none; }
.pt-nav__drawer {
  position: fixed;
  inset: 0;
  background: var(--color-bg-canvas);
  z-index: var(--z-drawer);
  padding: var(--space-20) var(--space-6) var(--space-6);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--easing-standard);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.pt-nav__drawer-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
}
.pt-nav__drawer .pt-nav__link {
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-tight);
  border: 0;
}
.pt-nav__toggle:checked ~ .pt-nav__drawer { transform: translateX(0); }
.pt-nav__toggle:checked ~ .pt-nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.pt-nav__toggle:checked ~ .pt-nav__burger span:nth-child(2) { opacity: 0; }
.pt-nav__toggle:checked ~ .pt-nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 768px) {
  .pt-nav__links { display: flex; }
  .pt-nav__cta { display: inline-flex; }
  .pt-nav__burger, .pt-nav__drawer { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .pt-nav__drawer { transition: none; }
  .pt-nav__burger span { transition: none; }
}

/* ============================================================================
   pt-hero — eyebrow + headline + sub + actions + optional canvas slot
   ============================================================================ */
.pt-hero {
  padding: var(--space-20) var(--space-6);
  background: var(--color-bg-canvas);
}
.pt-hero__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}
.pt-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-text-accent);
  margin-bottom: var(--space-6);
}
.pt-hero__eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: currentColor;
}
.pt-hero__headline {
  font-family: var(--font-family-display);
  font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-7xl));
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-6);
  text-wrap: balance;
}
.pt-hero__headline em {
  font-style: italic;
  color: var(--color-text-accent);
  font-family: var(--font-family-display);
}
.pt-hero__sub {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 44ch;
  margin: 0 0 var(--space-8);
  text-wrap: pretty;
}
.pt-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.pt-hero__slot {
  position: relative;
  min-height: 280px;
  border-radius: var(--radius-xl);
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  padding: var(--space-6);
  overflow: hidden;
}
@media (min-width: 1024px) {
  .pt-hero__inner { grid-template-columns: 1.1fr 1fr; gap: var(--space-16); }
  .pt-hero__slot { min-height: 420px; }
}

/* ============================================================================
   pt-section — eyebrow label + title + sub
   ============================================================================ */
.pt-section {
  padding: var(--space-20) var(--space-6);
}
.pt-section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
.pt-section__header {
  margin-bottom: var(--space-12);
  max-width: 56ch;
}
.pt-section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-text-accent);
  margin-bottom: var(--space-4);
}
.pt-section__label::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: currentColor;
}
.pt-section__title {
  font-family: var(--font-family-display);
  font-size: clamp(var(--font-size-3xl), 4.5vw, var(--font-size-5xl));
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4);
  text-wrap: balance;
}
.pt-section__sub {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin: 0;
  text-wrap: pretty;
}

/* ============================================================================
   pt-grid — responsive 2/3/4-col
   ============================================================================ */
.pt-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}
.pt-grid--tight { gap: var(--space-4); }
.pt-grid--loose { gap: var(--space-8); }

@media (min-width: 640px) {
  .pt-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 768px) {
  .pt-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pt-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .pt-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ============================================================================
   pt-faq-item — accordion using <details>, smooth open/close
   ============================================================================ */
.pt-faq-item {
  border-bottom: 1px solid var(--color-border-default);
}
.pt-faq-item > summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-6) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-snug);
  color: var(--color-text-primary);
  letter-spacing: var(--letter-spacing-tight);
}
.pt-faq-item > summary::-webkit-details-marker { display: none; }
.pt-faq-item > summary:focus-visible { outline: none; box-shadow: var(--shadow-ring); border-radius: var(--radius-sm); }
.pt-faq-item__icon {
  flex: none;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  position: relative;
  transition: transform var(--duration-base) var(--easing-standard),
              border-color var(--duration-base) var(--easing-standard);
}
.pt-faq-item__icon::before,
.pt-faq-item__icon::after {
  content: "";
  position: absolute;
  inset: 50% 25%;
  height: 1px;
  background: var(--color-text-primary);
  transition: transform var(--duration-base) var(--easing-standard);
}
.pt-faq-item__icon::after { transform: rotate(90deg); }
.pt-faq-item[open] .pt-faq-item__icon {
  background: var(--color-accent-bg);
  border-color: var(--color-accent-bg);
}
.pt-faq-item[open] .pt-faq-item__icon::before,
.pt-faq-item[open] .pt-faq-item__icon::after { background: var(--color-accent-fg); }
.pt-faq-item[open] .pt-faq-item__icon::after { transform: rotate(0deg); }

.pt-faq-item__body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  padding: 0 0 var(--space-6);
  max-width: 70ch;
  animation: pt-faq-open var(--duration-slow) var(--easing-enter) both;
}
@keyframes pt-faq-open {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .pt-faq-item__icon, .pt-faq-item__icon::before, .pt-faq-item__icon::after { transition: none; }
  .pt-faq-item__body { animation: none; }
}

/* ============================================================================
   pt-testimonial — quote + author + logo
   ============================================================================ */
.pt-testimonial {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-8);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
}
.pt-testimonial--inverse {
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  border-color: transparent;
}
.pt-testimonial__quote {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-snug);
  letter-spacing: var(--letter-spacing-tight);
  color: inherit;
  margin: 0;
  text-wrap: pretty;
}
.pt-testimonial__quote::before {
  content: "\201C";
  display: block;
  font-family: var(--font-family-display);
  font-size: var(--font-size-5xl);
  line-height: 0.7;
  color: var(--color-text-accent);
  margin-bottom: var(--space-2);
}
.pt-testimonial__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-default);
}
.pt-testimonial--inverse .pt-testimonial__footer { border-top-color: var(--color-border-inverse); }
.pt-testimonial__author {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.pt-testimonial__name {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: inherit;
}
.pt-testimonial__role {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-text-muted);
}
.pt-testimonial--inverse .pt-testimonial__role { color: var(--color-navy-300); }
.pt-testimonial__logo {
  flex-shrink: 0;
  font-family: var(--font-family-display);
  font-size: var(--font-size-md);
  font-style: italic;
  color: var(--color-text-muted);
  opacity: 0.7;
}

/* ============================================================================
   pt-marquee — infinite horizontal scroll, pauses on hover
   ============================================================================ */
.pt-marquee {
  display: flex;
  overflow: hidden;
  gap: var(--space-12);
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  padding: var(--space-6) 0;
}
.pt-marquee__track {
  display: flex;
  gap: var(--space-12);
  flex: none;
  animation: pt-marquee-scroll 32s linear infinite;
}
.pt-marquee:hover .pt-marquee__track,
.pt-marquee:focus-within .pt-marquee__track { animation-play-state: paused; }
.pt-marquee__item {
  flex: none;
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  font-style: italic;
  color: var(--color-text-muted);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}
.pt-marquee__item::after {
  content: "\002A";
  color: var(--color-accent-bg);
  font-style: normal;
}
.pt-marquee__item:last-child::after { content: ""; }

@keyframes pt-marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .pt-marquee__track { animation: none; }
  .pt-marquee { mask-image: none; -webkit-mask-image: none; overflow-x: auto; }
}

/* ============================================================================
   pt-tag — small pill, color variants
   ============================================================================ */
.pt-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1.4;
}
.pt-tag--accent  { background: var(--color-accent-bg-muted);          color: var(--color-accent-fg-muted); }
.pt-tag--success { background: var(--color-feedback-success-bg);      color: var(--color-feedback-success-strong); }
.pt-tag--warning { background: var(--color-feedback-warning-bg);      color: var(--color-feedback-warning-strong); }
.pt-tag--error   { background: var(--color-feedback-error-bg);        color: var(--color-feedback-error-strong); }
.pt-tag--info    { background: var(--color-feedback-info-bg);         color: var(--color-feedback-info-strong); }
.pt-tag--outline { background: transparent; border-color: var(--color-border-strong); color: var(--color-text-secondary); }

[data-theme="dark"] .pt-tag--accent { color: var(--color-orange-300); }

/* ============================================================================
   pt-process-step — numbered circle + title + body
   ============================================================================ */
.pt-process-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-5);
  align-items: start;
}
.pt-process-step__number {
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-accent);
  background: var(--color-bg-surface);
  flex: none;
}
.pt-process-step--filled .pt-process-step__number {
  background: var(--color-accent-bg);
  border-color: var(--color-accent-bg);
  color: var(--color-accent-fg);
}
.pt-process-step__body { padding-top: var(--space-2); }
.pt-process-step__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-snug);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2);
}
.pt-process-step__text {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin: 0;
  text-wrap: pretty;
}

/* timeline variant — connecting line down the side */
.pt-process-timeline { display: flex; flex-direction: column; gap: var(--space-10); position: relative; }
.pt-process-timeline .pt-process-step { position: relative; }
.pt-process-timeline .pt-process-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.5rem;
  top: 3.25rem;
  bottom: -2.5rem;
  width: 1px;
  background: var(--color-border-default);
}

/* ============================================================================
   pt-footer — multi-column with brand + nav + social
   ============================================================================ */
.pt-footer {
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  padding: var(--space-16) var(--space-6) var(--space-8);
}
.pt-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}
.pt-footer__brand {
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-tight);
  margin: 0 0 var(--space-4);
}
.pt-footer__tag {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-navy-200);
  max-width: 36ch;
  margin: 0 0 var(--space-6);
}
.pt-footer__col-title {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-orange-400);
  margin: 0 0 var(--space-4);
}
.pt-footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.pt-footer__link {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  color: var(--color-navy-200);
  text-decoration: none;
  transition: color var(--duration-fast) var(--easing-standard);
}
.pt-footer__link:hover { color: var(--color-text-inverse); }
.pt-footer__link:focus-visible { outline: none; color: var(--color-text-inverse); box-shadow: var(--shadow-ring); border-radius: var(--radius-sm); }
.pt-footer__social {
  display: flex;
  gap: var(--space-3);
}
.pt-footer__social-link {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-navy-700);
  border-radius: var(--radius-pill);
  color: var(--color-navy-200);
  text-decoration: none;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  transition: border-color var(--duration-fast) var(--easing-standard),
              color var(--duration-fast) var(--easing-standard);
}
.pt-footer__social-link:hover { border-color: var(--color-orange-400); color: var(--color-orange-400); }
.pt-footer__bottom {
  max-width: var(--container-max);
  margin: var(--space-12) auto 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-navy-700);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-navy-300);
}
@media (min-width: 768px) {
  .pt-footer__inner { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-16); }
  .pt-footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}

/* ============================================================================
   Utility — page container for QA pages
   ============================================================================ */
.pt-qa-page {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}
.pt-qa-page > h1 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--space-2);
}
.pt-qa-page > p.pt-qa-lede {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-12);
  max-width: 60ch;
}
.pt-qa-group { margin-bottom: var(--space-16); }
.pt-qa-group__title {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-text-accent);
  margin: 0 0 var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-default);
}
.pt-qa-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  align-items: center;
}
.pt-qa-note {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-text-muted);
  margin: var(--space-2) 0 var(--space-6);
}

/* Theme switcher (for QA pages) */
.pt-theme-switch {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  border-radius: var(--radius-pill);
  border: 0;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
}
.pt-theme-switch:focus-visible { outline: none; box-shadow: var(--shadow-ring), var(--shadow-lg); }