/* =============================================================================
 * pages.css
 * Page-specific patterns. Loaded after layout.css.
 * ========================================================================== */

/* Hero (homepage) ----------------------------------------------------------- */

.hero {
  background: var(--c31-invert-bg);
  color: var(--c31-invert-fg);
  padding-block: var(--sp-24) var(--sp-16);
  position: relative;
  overflow: hidden;
}

.hero::before {
  /* Subtle SVG texture rendered inline via data URI (permitted under img-src 'self' data:).
   * Used as a background through CSS, not a separate image file. */
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='600' height='600'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='matrix' values='0 0 0 0 0.98  0 0 0 0 0.97  0 0 0 0 0.94  0 0 0 0.035 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: 0.6;
  pointer-events: none;
}

.hero__inner {
  position: relative;
}

.hero h1 {
  color: var(--c31-invert-fg);
  max-width: 22ch;
  margin-bottom: var(--sp-6);
}

.hero__lede {
  font-size: var(--fs-lede);
  max-width: 46ch;
  margin-bottom: var(--sp-8);
  color: var(--c31-invert-fg);
  opacity: 0.9;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

/* Two modes panel ----------------------------------------------------------- */

.modes {
  display: grid;
  gap: var(--sp-8);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .modes { grid-template-columns: 1fr 1fr; gap: var(--sp-12); }
}

.mode-card {
  padding: var(--sp-8);
  background: var(--c31-paper);
  border: 1px solid var(--c31-rule);
  border-radius: var(--radius-1);
}

.mode-card__label {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c31-accent);
  font-weight: 600;
}

.mode-card h2 {
  margin-top: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.mode-card p {
  color: var(--c31-ink-soft);
  margin-bottom: var(--sp-4);
}

.mode-card a.mode-card__link {
  font-weight: 600;
  text-decoration: underline;
}

/* Proof strip --------------------------------------------------------------- */

.proof-strip {
  display: grid;
  gap: var(--sp-8);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .proof-strip {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-6);
  }
}

.proof-strip__item {
  padding-right: var(--sp-6);
  border-left: 2px solid var(--c31-accent);
  padding-left: var(--sp-4);
}

.proof-strip__number {
  font-family: var(--ff-display);
  font-size: 1.875rem;
  font-weight: 600;
  color: var(--c31-navy);
  line-height: 1;
  display: block;
  margin-bottom: var(--sp-2);
}

.section--dark .proof-strip__number {
  color: var(--c31-invert-fg);
}

.proof-strip__label {
  font-size: 0.875rem;
  color: var(--c31-ink-soft);
  display: block;
}

.section--dark .proof-strip__label {
  color: var(--c31-invert-fg);
  opacity: 0.75;
}

/* Buyer callout ------------------------------------------------------------- */

.buyer {
  max-width: var(--measure-reading);
}

.buyer p { font-size: var(--fs-lede); }

/* Technology surface grid --------------------------------------------------- */

.tech-grid {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
  margin-top: var(--sp-12);
}

@media (min-width: 48rem) {
  .tech-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
}

@media (min-width: 72rem) {
  .tech-grid { grid-template-columns: 1fr 1fr 1fr; }
}

.tech-card {
  position: relative;
  padding: var(--sp-8);
  background: var(--c31-paper);
  border: 1px solid var(--c31-rule);
  border-top: 3px solid var(--c31-accent);
  border-radius: var(--radius-1);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.tech-card__num {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c31-accent);
  font-weight: 700;
}

.tech-card h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-h3);
  color: var(--c31-heading);
  margin: 0;
  line-height: var(--lh-heading);
}

.tech-card p {
  color: var(--c31-ink-soft);
  margin: 0;
}

.tech-card__tags {
  list-style: none;
  padding: 0;
  margin: var(--sp-2) 0 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.tech-card__tags li {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  line-height: 1.3;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--c31-rule);
  border-radius: 999px;
  color: var(--c31-fg-soft);
  background: var(--c31-bg-alt);
}

/* Contact card (email-first contact page) ---------------------------------- */

.contact-card {
  padding: var(--sp-8);
  background: var(--c31-paper);
  border: 1px solid var(--c31-rule);
  border-top: 3px solid var(--c31-accent);
  border-radius: var(--radius-1);
}

.contact-card__address {
  font-family: var(--ff-display);
  font-size: var(--fs-h2);
  line-height: 1.2;
  margin: var(--sp-3) 0 var(--sp-6) 0;
  word-break: break-word;
}

.contact-card__address a {
  color: var(--c31-accent);
  text-decoration: none;
  border-bottom: 2px solid var(--c31-accent);
}

.contact-card__address a:hover,
.contact-card__address a:focus {
  color: var(--c31-accent-hover);
  border-bottom-color: var(--c31-accent-hover);
}

.contact-card__hint {
  color: var(--c31-fg-soft);
  font-size: 0.9375rem;
  margin: 0 0 var(--sp-3) 0;
}

.contact-card__hint:last-child {
  margin-bottom: 0;
}

.contact-card__or {
  margin: var(--sp-6) 0 var(--sp-3) 0;
  color: var(--c31-fg-soft);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-card__action {
  margin: var(--sp-3) 0 var(--sp-3) 0;
}

/* Proof page case briefs ---------------------------------------------------- */

.case {
  padding-block: var(--sp-12);
  border-bottom: 1px solid var(--c31-rule);
}

.case:last-child { border-bottom: 0; }

.case__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.case__client {
  font-family: var(--ff-display);
  font-size: var(--fs-h2);
  color: var(--c31-navy);
}

.case__sector {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c31-ink-soft);
}

.case__body {
  display: grid;
  gap: var(--sp-8);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .case__body { grid-template-columns: repeat(3, 1fr); }
}

.case__block h3 {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c31-accent);
  margin-bottom: var(--sp-3);
}

.case__block p {
  color: var(--c31-ink);
}

.case__outcome {
  font-family: var(--ff-display);
  font-size: 1.25rem;
  color: var(--c31-navy);
  font-weight: 600;
}

/* Mode detail pages --------------------------------------------------------- */

.mode-hero {
  padding-block: var(--sp-16) var(--sp-12);
  background: var(--c31-paper-alt);
  border-bottom: 1px solid var(--c31-rule);
}

.mode-hero h1 {
  max-width: 20ch;
  margin-bottom: var(--sp-4);
}

.mode-hero .lede {
  font-size: 1.25rem;
}

.triggers {
  display: grid;
  gap: var(--sp-4);
  grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
  .triggers { grid-template-columns: 1fr 1fr; }
}

.triggers li {
  padding: var(--sp-4);
  background: var(--c31-paper-alt);
  border-left: 2px solid var(--c31-accent);
  font-size: 0.9375rem;
}

.shape-steps {
  counter-reset: step;
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .shape-steps { grid-template-columns: repeat(2, 1fr); }
}

.shape-steps li {
  counter-increment: step;
  padding: var(--sp-6);
  border-top: 2px solid var(--c31-navy);
  position: relative;
}

.shape-steps li::before {
  content: "0" counter(step);
  display: block;
  font-family: var(--ff-display);
  font-weight: 600;
  color: var(--c31-accent);
  margin-bottom: var(--sp-2);
  font-size: 0.9375rem;
}

.shape-steps h3 {
  margin-bottom: var(--sp-2);
}

.shape-steps p {
  color: var(--c31-ink-soft);
  margin: 0;
}

/* FAQ ----------------------------------------------------------------------- */

.faq details {
  border-bottom: 1px solid var(--c31-rule);
  padding-block: var(--sp-4);
}

.faq details summary {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--c31-navy);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
}

.faq details summary::-webkit-details-marker { display: none; }

.faq details summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--c31-accent);
  transition: transform var(--dur-1) var(--ease-1);
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  margin-top: var(--sp-3);
  color: var(--c31-ink-soft);
}

/* About page ---------------------------------------------------------------- */

.bio {
  display: grid;
  gap: var(--sp-12);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .bio { grid-template-columns: 1fr 2fr; }
}

.bio__mark {
  border-top: 2px solid var(--c31-navy);
  padding-top: var(--sp-4);
}

.bio__mark img {
  width: 80px;
  height: auto;
  margin-bottom: var(--sp-4);
}

.credentials {
  display: grid;
  gap: var(--sp-4);
  grid-template-columns: 1fr;
  font-size: 0.9375rem;
}

.credentials li {
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--c31-rule);
}

/* Error pages --------------------------------------------------------------- */

.error-hero {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding-block: var(--sp-16);
}

.error-hero__code {
  font-family: var(--ff-display);
  font-size: 4rem;
  color: var(--c31-accent);
  line-height: 1;
  margin-bottom: var(--sp-4);
}

/* Generic prose page (privacy, terms, pro bono) ----------------------------- */

.prose {
  max-width: var(--measure-reading);
}

.prose h2 {
  margin-top: var(--sp-12);
  margin-bottom: var(--sp-4);
}

.prose h3 {
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-2);
}

.prose p,
.prose li {
  color: var(--c31-ink);
}

.prose ul {
  list-style: disc;
  padding-left: var(--sp-6);
  margin-block: var(--sp-4);
}

.prose ul li + li {
  margin-top: var(--sp-2);
}

.prose p + p {
  margin-top: var(--sp-4);
}

/* Obfuscated email holder --------------------------------------------------- */

.c31-email {
  /* Populated by /assets/js/email.js on DOMContentLoaded. */
}

/* Privacy notice banner ---------------------------------------------------- */
/* Shown once on first visit. Dismissal is persisted via a single
 * localStorage key. Dark surface in both colour schemes. */

.privacy-notice {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--c31-invert-bg);
  color: var(--c31-invert-fg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
  z-index: 60;
}

.privacy-notice[hidden] {
  display: none;
}

.privacy-notice__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
  align-items: center;
  justify-content: space-between;
  padding-block: var(--sp-4);
}

.privacy-notice__text {
  max-width: 60ch;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--c31-invert-fg);
  margin: 0;
  opacity: 0.92;
}

.privacy-notice__text a {
  color: var(--c31-invert-fg);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.privacy-notice__text a:hover {
  opacity: 0.8;
}

.privacy-notice__dismiss {
  flex-shrink: 0;
  display: inline-block;
  padding: var(--sp-2) var(--sp-6);
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--ff-body);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--c31-accent);
  color: var(--c31-on-accent);
  border: 1px solid var(--c31-accent);
  border-radius: var(--radius-1);
  cursor: pointer;
  transition: background var(--dur-1) var(--ease-1), border-color var(--dur-1) var(--ease-1);
}

.privacy-notice__dismiss:hover {
  background: var(--c31-accent-hover);
  border-color: var(--c31-accent-hover);
}

@media (max-width: 40rem) {
  .privacy-notice__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-4);
  }
  .privacy-notice__dismiss {
    align-self: stretch;
    text-align: center;
  }
}

/* Logo legibility in dark mode --------------------------------------------- */
/* The source logo is deep burgundy on transparent, which reads fine against
 * the warm off-white paper in light mode. On the near-black dark-mode surface
 * the burgundy is too close in luminance to the background. A brightness and
 * saturation lift pushes the ribbons into visible rose without washing the
 * anti-aliased edges. Applied only to the inline renders of the logo; the
 * favicon and OG image are fetched separately and keep their source tone. */

@media (prefers-color-scheme: dark) {
  .site-header__brand img,
  .site-footer__mark,
  .bio__mark img {
    filter: brightness(1.85) saturate(1.15);
  }
}

.c31-email[data-state="ready"]::before {
  content: "";
}

/* Utilities (keep HTML free of inline styles) ------------------------------- */

.u-mt-4  { margin-top: var(--sp-4); }
.u-mt-6  { margin-top: var(--sp-6); }
.u-mt-8  { margin-top: var(--sp-8); }
.u-mt-12 { margin-top: var(--sp-12); }
.u-mb-4  { margin-bottom: var(--sp-4); }
.u-mb-12 { margin-bottom: var(--sp-12); }
.u-measure-reading { max-width: var(--measure-reading); }

.site-footer__mark { margin-bottom: var(--sp-4); }

.dark-lede {
  margin-top: var(--sp-4);
  max-width: var(--measure-reading);
  color: var(--c31-invert-fg);
  opacity: 0.9;
}

.cta-row { margin-top: var(--sp-8); }

.bio__name { font-size: var(--fs-h3); }
.bio__role {
  color: var(--c31-ink-soft);
  font-size: 0.875rem;
}

/* Error hero overrides (scoped, no inline) ---------------------------------- */

.error-hero .lede {
  margin-top: var(--sp-6);
  margin-inline: auto;
}

.error-hero .cta-row {
  margin-top: var(--sp-8);
}

/* Default spacing for recurring blocks so they need no inline margin -------- */

.modes { margin-top: var(--sp-12); }
.proof-strip { margin-top: var(--sp-12); }
.shape-steps { margin-top: var(--sp-8); }
.faq {
  margin-top: var(--sp-8);
  max-width: var(--measure-reading);
}