/* =========================================================
   EDITORIAL APPETITE — Roman Lukš Portfolio
   Organization: fonts -> tokens -> reset -> base -> utilities
   -> nav -> buttons -> footer -> motion -> components -> pages
   -> case study (phase 2) -> media queries
   ========================================================= */

/* ===== FONTS ===== */
@font-face {
  font-family: "Cooper Black";
  src: url("../fonts/CooperFiveOpti-Black.otf") format("opentype");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}


/* ===== CUSTOM PROPERTIES ===== */
:root {
  /* Colors */
  --color-primary:          #e56b0c;
  --color-primary-hover:    #c55a08;
  --color-primary-ring:     rgba(229, 107, 12, 0.3);
  --color-primary-tint:     rgba(229, 107, 12, 0.10);
  --color-primary-glow:     rgba(229, 107, 12, 0.18);
  --color-primary-dot:      rgba(229, 107, 12, 0.20);
  --color-primary-ghost:    rgba(229, 107, 12, 0.14);
  --color-primary-ink:      #903507; /* orange TEXT on light bg (links, labels) — APCA Lc 78 on paper */
  --color-primary-on-dark:  #ffaa5e; /* orange TEXT on dark #1e1c18 — APCA Lc 65 */

  --color-text-primary:     #2d3748;
  --color-text-secondary:   #4a5568;
  --color-text-muted:       #5a6c7d;

  --color-white:            #ffffff;
  --color-bg:               #fafafa;
  --color-bg-section:       #ffffff;
  --color-bg-paper:         #f6f1ea;
  --color-bg-dark:          #1e1c18;
  --color-border:           #d1d9e6;

  --color-hero-text:        rgba(255, 255, 255, 0.65);
  --color-hero-text-muted:  rgba(255, 255, 255, 0.75);
  --color-hero-border:      rgba(255, 255, 255, 0.12);

  /* Typography */
  --font-sans:    "Inter", sans-serif;
  --font-display: "Cooper Black", Georgia, serif;
  --font-mono:    ui-monospace, "SF Mono", "SFMono-Regular", Menlo, "Cascadia Code", "Roboto Mono", monospace;

  --font-size-xs:   0.75rem;
  --font-size-sm:   0.875rem;
  --font-size-ui:   0.9375rem;
  --font-size-base: 1.125rem;
  --font-size-lg:   1.25rem;
  --font-size-lead: clamp(1.5rem, 3.5vw, 2rem);

  /* Display scale — the centerpiece */
  --type-display-hero: clamp(2.75rem, 9.5vw, 8rem);
  --type-display-xl:   clamp(2.5rem, 7vw, 5.5rem);
  --type-display-lg:   clamp(2rem, 5vw, 3.75rem);
  --type-display-md:   clamp(1.5rem, 3.5vw, 2.5rem);

  /* Ghost / oversized numerals */
  --type-ghost: clamp(6rem, 22vw, 16rem);

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 2.5rem;
  --space-3xl: 3rem;
  --space-4xl: 4rem;
  --space-5xl: 5rem;
  --space-6xl: 7rem;
  --space-7xl: 9rem;

  /* Shape */
  --radius-sm:   0.375rem;
  --radius-md:   0.75rem;
  --radius-full: 9999px;

  /* Motion */
  --transition:      0.2s ease;
  --transition-slow: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  --reveal-distance: 24px;

  /* Layout */
  --content-width: 72rem;
  --measure: 65ch;
  --gutter: var(--space-lg);
  --toc-width: 11rem;

  /* Dot grid motif */
  --dot-grid-light: radial-gradient(var(--color-primary-tint) 2px, transparent 2px);
  --dot-grid-dark:  radial-gradient(var(--color-primary-glow) 2px, transparent 2px);
  --dot-grid-size:  28px 28px;
}


/* ===== RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}


/* ===== BASE ===== */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  /* Offset anchor jumps so targets clear the sticky .site-header
     (~4rem tall at top:0) instead of hiding underneath it. */
  scroll-padding-top: calc(4rem + var(--space-lg));
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

p {
  max-width: var(--measure);
}

/* Visible focus state */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ===== LAYOUT UTILITIES ===== */
.container {
  width: min(100% - (var(--gutter) * 2), var(--content-width));
  margin-inline: auto;
}

/* Eyebrow label — shared with phase 2 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  /* #e56b0c fails AA for small text on light backgrounds; the darker
     hover shade clears it. Dark-background eyebrows opt back into the
     brighter orange (sufficient contrast on #1e1c18). */
  color: var(--color-primary-hover);
}

.dot-grid--dark .eyebrow {
  color: var(--color-primary);
}

.cs-hero__eyebrow {
  color: var(--color-primary-on-dark);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  margin-right: 0.5em;
  border-radius: var(--radius-full);
  background: currentColor;
  flex-shrink: 0;
}

/* Section heading — display face, shared with phase 2 */
.section-heading {
  font-family: var(--font-display);
  font-size: var(--type-display-lg);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

/* Ghost numeral — oversized Cooper Black, outlined */
.ghost-numeral {
  font-family: var(--font-display);
  font-size: var(--type-ghost);
  line-height: 1;
  color: var(--color-primary-ghost);
  -webkit-text-stroke: 1px var(--color-primary-tint);
}

/* Dot grid backgrounds */
.dot-grid {
  background-image: var(--dot-grid-light);
  background-size: var(--dot-grid-size);
}

.dot-grid--dark {
  background-color: var(--color-bg-dark);
  background-image: var(--dot-grid-dark);
  background-size: var(--dot-grid-size);
}

/* Visually hidden (skip links, sr-only text) */
.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;
}

/* Skip link: hidden until focused, then pinned to the top of the viewport */
.skip-link:focus {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 100;
  width: auto;
  height: auto;
  padding: 0.625rem 1.25rem;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-ui);
  font-weight: 600;
  border-radius: var(--radius-sm);
}


/* ===== MOTION / REVEAL SYSTEM =====
   Progressive enhancement: js/main.js sets `.js-enabled` on <html>
   and toggles `.is-visible` on `.reveal` elements via IntersectionObserver.
   No JS / reduced motion => content is visible by default. */
.js-enabled .reveal {
  opacity: 0;
  transform: translateY(var(--reveal-distance));
}

@media (prefers-reduced-motion: no-preference) {
  .js-enabled .reveal {
    transition: opacity var(--transition-slow), transform var(--transition-slow);
  }

  .js-enabled .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  /* Stagger children: .reveal-group > * get incremental delay */
  .js-enabled .reveal-group > .reveal:nth-child(1) { transition-delay: 0ms; }
  .js-enabled .reveal-group > .reveal:nth-child(2) { transition-delay: 80ms; }
  .js-enabled .reveal-group > .reveal:nth-child(3) { transition-delay: 160ms; }
  .js-enabled .reveal-group > .reveal:nth-child(4) { transition-delay: 240ms; }
  .js-enabled .reveal-group > .reveal:nth-child(5) { transition-delay: 320ms; }
  .js-enabled .reveal-group > .reveal:nth-child(6) { transition-delay: 400ms; }
}

@media (prefers-reduced-motion: reduce) {
  .js-enabled .reveal {
    opacity: 1;
    transform: none;
  }
}


/* ===== NAVIGATION ===== */
.site-header {
  padding: var(--space-lg) var(--gutter);
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(100% - (var(--gutter) * 2), var(--content-width));
  margin-inline: auto;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__logo-photo {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  object-fit: cover;
  outline: 2px solid var(--color-primary-ring);
  outline-offset: 2px;
  transition: outline-color var(--transition);
  flex-shrink: 0;
}

.nav__logo-name {
  font-size: var(--font-size-ui);
  font-weight: 600;
  color: var(--color-text-primary);
  transition: color var(--transition);
}

.nav__logo:hover .nav__logo-photo {
  outline-color: var(--color-primary);
}

.nav__logo:hover .nav__logo-name {
  color: var(--color-primary-hover);
}

.nav__links {
  display: flex;
  gap: var(--space-xl);
}

.nav__link {
  font-size: var(--font-size-ui);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color var(--transition), border-color var(--transition);
}

.nav__link:hover {
  color: var(--color-primary-hover);
  border-bottom-color: var(--color-primary-hover);
}


/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-sans);
  font-size: var(--font-size-ui);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -8px var(--color-primary);
}

.btn--text {
  position: relative;
  color: var(--color-text-primary);
  padding-bottom: 2px;
}

.btn--text::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0.3);
  transform-origin: left;
  opacity: 0.3;
  transition: transform var(--transition), opacity var(--transition);
}

.btn--text:hover {
  color: var(--color-primary-hover);
}

.btn--text:hover::after {
  transform: scaleX(1);
  opacity: 1;
  background: var(--color-primary-hover);
}


/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) var(--gutter) var(--space-2xl);
  background: var(--color-bg-section);
}

.site-footer__sign {
  font-family: var(--font-display);
  font-size: var(--type-display-lg);
  line-height: 1;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.site-footer a {
  color: var(--color-primary-hover);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.site-footer a:hover {
  border-bottom-color: var(--color-primary-hover);
}


/* ===== HERO ===== */
.hero {
  min-height: 85svh;
  display: flex;
  align-items: center;
  padding: var(--space-4xl) var(--gutter) var(--space-5xl);
  background-color: var(--color-bg);
  background-image: var(--dot-grid-light);
  background-size: var(--dot-grid-size);
}

.hero__inner {
  width: min(100% - (var(--gutter) * 2), var(--content-width));
  margin-inline: auto;
}

.hero__headline {
  font-size: var(--type-display-hero);
  line-height: 0.98;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  max-width: 18ch;
  margin-bottom: var(--space-2xl);
}

/* "I design products for restaurants and their" — Inter italic, light */
.hero__headline-lead {
  font-family: var(--font-sans);
  font-style: italic;
  font-weight: 350;
  display: block;
}

/* "hungry guests." — the loudest moment */
.hero__headline-accent {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 900;
  color: var(--color-primary);
  display: block;
}

.hero__sub {
  font-size: var(--font-size-lead);
  color: var(--color-text-secondary);
  max-width: 46ch;
  line-height: 1.5;
  margin-bottom: var(--space-2xl);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}


/* ===== SELECTED WORK ===== */
.selected-work {
  padding: var(--space-6xl) var(--gutter);
  background: var(--color-bg-section);
}

.selected-work .section-heading {
  margin-bottom: var(--space-3xl);
}

.work-grid {
  display: grid;
  gap: var(--space-3xl);
}

.work-card {
  display: grid;
  gap: 0;
  background: var(--color-bg-section);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.work-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 24px 60px -24px rgba(30, 28, 24, 0.25);
  transform: translateY(-4px);
}

.work-card__cover {
  aspect-ratio: 16 / 9;
  background-color: var(--color-bg-dark);
  background-image: var(--dot-grid-dark);
  background-size: var(--dot-grid-size);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.work-card__cover-label {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 14vw, 9rem);
  line-height: 1;
  color: var(--color-primary);
  transition: transform var(--transition-slow);
}

.work-card:hover .work-card__cover-label {
  transform: scale(1.06);
}

.work-card__body {
  padding: var(--space-2xl);
}

.work-card__tag {
  display: inline-block;
}

.work-card__title {
  font-family: var(--font-display);
  font-size: var(--type-display-md);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
}

.work-card__summary {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: var(--measure);
  margin-bottom: var(--space-xl);
}

.work-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--font-size-ui);
  font-weight: 600;
  color: var(--color-primary-hover);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), gap var(--transition);
}

.work-card:hover .work-card__cta {
  border-bottom-color: var(--color-primary-hover);
  gap: 0.75em;
}


/* ===== TESTIMONIALS (proof bridge) =====
   Quiet transition beat between Selected Work and the CTA — character
   references from prior PM/Scrum colleagues, not UX-craft endorsements.
   Kept deliberately understated: Inter italic body (not Cooper Black,
   which is reserved for Roman's own headline voice), muted text color,
   pale band with thin top/bottom rules echoing the footer border. */
.testimonials {
  padding: var(--space-5xl) var(--gutter);
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
}

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

.testimonial__quote {
  font-family: var(--font-sans);
  font-style: italic;
  font-weight: 350;
  font-size: var(--font-size-base);
  /* color-text-secondary on bg-section clears the APCA bar for italic
     body text at this size while staying visibly muted vs. the CTA copy */
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.testimonial__mark {
  font-style: normal;
  color: var(--color-primary-ink);
}

.testimonial__attribution {
  display: block;
  font-style: normal;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}


/* ===== CTA SECTION ===== */
.cta-section {
  padding: var(--space-6xl) var(--gutter);
  background-color: var(--color-bg-paper);
  background-image: var(--dot-grid-light);
  background-size: var(--dot-grid-size);
}

.cta-section .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.cta-section__body {
  font-family: var(--font-display);
  font-size: var(--type-display-lg);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  max-width: 20ch;
  margin-bottom: var(--space-3xl);
}

.cta-section__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}


/* =====================================================================
   ===== CASE STUDY (phase 2 builds here) =====
   Shared pieces above (container, eyebrow, section-heading, ghost-numeral,
   dot-grid, reveal/reveal-group/is-visible, btn, site-footer, ".js-enabled")
   are reused directly. Page-specific pieces below.
   ===================================================================== */

/* ===== CASE STUDY HERO ===== */
.cs-hero {
  padding: var(--space-6xl) var(--gutter) var(--space-5xl);
}

.cs-hero__inner {
  width: min(100% - (var(--gutter) * 2), var(--content-width));
  margin-inline: auto;
}

.cs-hero__eyebrow {
  margin-bottom: var(--space-xl);
}

.cs-hero__title {
  font-family: var(--font-display);
  font-size: var(--type-display-xl);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--color-white);
  max-width: 16ch;
  margin-bottom: var(--space-xl);
}

.cs-hero__summary {
  font-size: var(--font-size-lead);
  color: var(--color-hero-text);
  max-width: 42ch;
  line-height: 1.5;
}

.cs-hero__stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  margin-top: var(--space-4xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-hero-border);
}

.cs-hero__stat-number {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 13vw, 8rem);
  line-height: 1;
  letter-spacing: -0.01em;
  /* numeral fails Lc 45 floor on dark in bright orange; cream clears Lc 97.
     The underline accent below keeps the orange decorative cue. */
  color: #f5f0e8;
  display: block;
  position: relative;
  padding-bottom: calc(2px + 0.5rem);
  margin-bottom: var(--space-sm);
}

.cs-hero__stat-number::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2.5rem;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.cs-hero__stat-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-hero-text-muted);
  line-height: 1.25;
}


/* ===== CASE STUDY META STRIP ===== */
.cs-meta {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--gutter);
  background: var(--color-bg-section);
}

.cs-meta__inner {
  width: min(100% - (var(--gutter) * 2), var(--content-width));
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl) var(--space-3xl);
}

.cs-meta__label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.cs-meta__value {
  font-size: var(--font-size-ui);
  color: var(--color-text-primary);
  line-height: 1.4;
}


/* ===== CASE STUDY BODY ===== */
.cs-body {
  padding: var(--space-6xl) var(--gutter);
  background: var(--color-bg-section);
}

.cs-body .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-7xl);
}

/* Sticky rail + body layout — mobile: single column, TOC hidden.
   >=64rem: two-column with sticky left rail (see media query below).
   Selector matches `.cs-body .container` specificity (0,2,0) so this grid
   wins over that rule's `display:flex` by source order. */
.cs-body .cs-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.cs-body__sections {
  min-width: 0; /* prevent grid blowout */
  display: flex;
  flex-direction: column;
  gap: var(--space-7xl);
}

/* Hide TOC on mobile; revealed at >=64rem */
.cs-toc {
  display: none;
}

.cs-body p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: var(--measure);
}

.cs-body p + p,
.cs-body .cs-quote + p {
  margin-top: var(--space-lg);
}

.cs-phase p + ul,
.cs-phase ul + p,
.cs-phase .cs-transform-diagram + p,
.cs-phase .cs-transform-diagram + ul {
  margin-top: var(--space-lg);
}

.cs-section__heading {
  margin-bottom: var(--space-2xl);
  max-width: 18ch;
}


/* ===== PROCESS PHASES ===== */
.cs-phases {
  display: flex;
  flex-direction: column;
  gap: var(--space-6xl);
  margin-top: var(--space-3xl);
}

.cs-phase {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

.cs-body p.cs-phase__pillar {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  /* orange text on light paper bg — primary-ink clears APCA Lc 78 */
  color: var(--color-primary-ink);
  line-height: 1;
  margin-bottom: var(--space-xs);
  max-width: none;
}

.cs-phase__title {
  font-family: var(--font-display);
  font-size: var(--type-display-md);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  max-width: 20ch;
}

.cs-phase__content > p,
.cs-phase__content > ul,
.cs-phase__content > .cs-transform-diagram {
  max-width: var(--measure);
}

.cs-phase ul {
  list-style: disc;
  padding-left: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.cs-phase li {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.cs-phase li::marker {
  color: var(--color-primary);
}


/* ===== TOKEN PIPELINE (transform diagram) =====
   Vertical flow: each stage is a fixed-width card laid out as
   label | artifact, with a down-arrow between stages. Every stage
   shares one width — sized so the longest code line (the TypeScript
   const declaration) fits on a single line without wrapping on
   desktop/tablet. Below 30rem the card stacks label above artifact
   (see media query) so the narrow viewport doesn't force overflow. */
.cs-transform-diagram {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.cs-transform-diagram__track {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

/* One shared width for every stage, capped so the widest code line fits */
.cs-transform-stage {
  width: 100%;
  max-width: 29rem;
}

.cs-transform-stage__card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-section);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.cs-transform-stage__card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px -8px var(--color-primary-glow);
}

/* Style Dictionary node: distinguished as the transform step */
.cs-transform-stage__card--transform {
  border-color: var(--color-primary);
  background: var(--color-primary-tint);
}

.cs-transform-stage__label {
  flex: 0 0 8.5rem;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.cs-transform-stage__artifact {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 0;
}

.cs-transform-stage__swatch {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  border: 1px solid rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

.cs-transform-stage__code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  white-space: nowrap;
  background: none;
}

/* color-text-primary on primary-tint passes AA; primary-hover does not */
.cs-transform-stage__code--transform {
  color: var(--color-text-primary);
  font-weight: 700;
}

/* Decorative real button in the App stage */
.cs-transform-stage__btn-demo {
  pointer-events: none;
  font-size: var(--font-size-xs);
  padding: 0.5rem 1rem;
}

/* Down arrow between stacked stages, indented under the cards */
.cs-transform-diagram__arrow {
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--font-size-lg);
  line-height: 1;
  margin-left: 1.5rem;
  padding: var(--space-xs) 0;
  opacity: 0.6;
}

/* On narrow screens, the fixed-width label squeezes the nowrap code
   line into too little space (confirmed overflow at 360px/320px).
   Stack label above artifact so the code line gets the full card
   width instead of fighting a fixed-width label for room. */
@media (max-width: 30rem) {
  .cs-transform-stage__card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  .cs-transform-stage__label {
    flex-basis: auto;
  }
  .cs-transform-stage__code {
    font-size: var(--font-size-xs);
    /* Stacked layout fits the longest line at ~360px; at the very
       narrow end (~320px) some monospace fallbacks come within a
       pixel or two of the card width, so allow a wrap as a last
       resort rather than reintroducing horizontal overflow. */
    white-space: normal;
    word-break: break-word;
  }
}


/* ===== INLINE NAME CHIPS ===== */
.cs-name-chip {
  font-family: var(--font-mono);
  font-size: 0.875em;
  font-weight: 500;
  background: var(--color-bg-paper);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.45em;
  border: 1px solid var(--color-border);
  white-space: nowrap;
  color: var(--color-text-primary);
}

.cs-name-chip--mismatch {
  color: var(--color-text-secondary);
}


/* ===== PULL QUOTE ===== */
.cs-quote {
  border-top: 3px solid var(--color-primary);
  padding-top: var(--space-xl);
  margin: var(--space-3xl) 0;
  max-width: var(--measure);
}

.cs-quote p {
  font-family: var(--font-sans);
  font-style: italic;
  font-weight: 350;
  font-size: var(--type-display-md);
  color: var(--color-text-primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-lg);
  max-width: none;
}

.cs-quote__emoji {
  font-style: normal;
  display: inline-block;
}

.cs-quote__attribution {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-style: normal;
}


/* ===== LEARNINGS ===== */
.cs-learnings {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
  counter-reset: learning;
  margin-top: var(--space-2xl);
}

.cs-learnings__item {
  counter-increment: learning;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm) var(--space-xl);
  align-items: start;
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--color-border);
}

.cs-learnings__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.cs-learnings__item::before {
  content: counter(learning, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-primary-ghost);
  -webkit-text-stroke: 1px var(--color-primary-tint);
}

.cs-learnings__item-title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
  max-width: 22ch;
}

.cs-learnings__item-body {
  font-size: var(--font-size-ui);
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: var(--measure);
}


/* ===== CASE STUDY CTA ===== */
.cs-cta {
  padding: var(--space-6xl) var(--gutter);
  background-color: var(--color-bg-paper);
}

.cs-cta .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2xl);
}

.cs-cta__heading {
  font-family: var(--font-display);
  font-size: var(--type-display-lg);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.cs-cta__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}


/* ===== RESPONSIVE ===== */
@media (min-width: 48rem) {
  :root {
    --gutter: var(--space-3xl);
  }

  .work-card {
    grid-template-columns: 1.1fr 1fr;
    align-items: stretch;
  }

  .work-card__cover {
    aspect-ratio: auto;
    height: 100%;
  }

  .cs-meta__inner {
    grid-template-columns: repeat(3, 1fr);
  }

  .cs-hero__stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-4xl);
    align-items: flex-end;
  }
}

@media (min-width: 64rem) {
  .hero__headline {
    max-width: 22ch;
  }

  .selected-work .section-heading {
    margin-bottom: var(--space-4xl);
  }

  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4xl);
  }

  .cs-hero__stats {
    gap: var(--space-6xl);
  }

  /* ===== TABLE OF CONTENTS — sticky left rail ===== */
  .cs-body .cs-layout {
    grid-template-columns: var(--toc-width) 1fr;
    gap: var(--space-4xl);
    align-items: start;
  }

  .cs-toc {
    display: block;
    position: sticky;
    top: calc(4rem + var(--space-3xl)); /* clear the sticky site nav */
    padding-top: var(--space-xs);
  }

  .cs-toc__label {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-secondary); /* APCA: muted is Lc 74 at 12px (under 75 floor); secondary = Lc 83 */
    margin-bottom: var(--space-md);
    max-width: none;
  }

  .cs-toc__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
    border-left: 1px solid var(--color-border);
  }

  .cs-toc__item {
    display: block;
  }

  .cs-toc__link {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--color-text-secondary); /* APCA: muted is Lc 74 at 12px (under 75 floor); secondary = Lc 83 */
    padding: 0.4rem 0 0.4rem var(--space-md);
    border-left: 2px solid transparent;
    margin-left: -1px;
    transition: color var(--transition), border-color var(--transition);
    text-decoration: none;
  }

  .cs-toc__link:hover {
    color: var(--color-text-primary);
  }

  /* Active state set by scroll-spy JS */
  .cs-toc__link.is-active {
    color: var(--color-primary-ink);
    border-left-color: var(--color-primary-ink);
  }
}