/* =========================================================
   Sameh Elsokkary — UX Designer & Researcher — Portfolio
   Design system + components. Mobile-first.
   ========================================================= */

/* ---------- 1. Custom properties ---------- */
:root {
  /* Color: deep navy/charcoal base + single confident amber accent */
  --navy-950: #0A0E1A;
  --navy-900: #111827;
  --navy-800: #1B2436;
  --navy-700: #2A3650;
  --navy-600: #3E4C6B;

  --accent: #F2A93B;       /* vivid amber — decorative, icons, buttons */
  --accent-600: #9C5F0E;   /* AA-safe amber for text/links on light bg */
  --accent-glow: rgba(242, 169, 59, 0.35);

  --ink: #12161F;          /* headings on light backgrounds */
  --text-muted: #4B5563;   /* body copy on light backgrounds */
  --text-on-dark: #E7E9EE; /* body copy on dark backgrounds */
  --text-on-dark-muted: #A9B2C3;

  --paper: #FFFFFF;
  --paper-alt: #F6F5F2;
  --border-light: #E3E1DA;
  --border-dark: #2A3650;

  /* Spacing scale */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Fluid type scale */
  --fs-xs: clamp(0.78rem, 0.75rem + 0.14vw, 0.875rem);
  --fs-sm: clamp(0.9rem, 0.87rem + 0.15vw, 1rem);
  --fs-base: clamp(1rem, 0.97rem + 0.2vw, 1.125rem);
  --fs-md: clamp(1.15rem, 1.08rem + 0.35vw, 1.3rem);
  --fs-lg: clamp(1.3rem, 1.15rem + 0.7vw, 1.6rem);
  --fs-xl: clamp(1.55rem, 1.3rem + 1.1vw, 2.1rem);
  --fs-2xl: clamp(1.9rem, 1.5rem + 1.9vw, 2.85rem);
  --fs-3xl: clamp(2.3rem, 1.7rem + 2.9vw, 3.6rem);
  --fs-4xl: clamp(2.6rem, 1.75rem + 4.4vw, 4.5rem);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  --shadow-sm: 0 2px 8px rgba(10, 14, 26, 0.08);
  --shadow-md: 0 8px 24px rgba(10, 14, 26, 0.12);
  --shadow-lg: 0 20px 48px rgba(10, 14, 26, 0.18);

  --container-w: 1200px;
  --header-h: 76px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.6s;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text-muted);
  background: var(--paper);
  overflow-x: hidden;
}
img, picture, svg { max-width: 100%; display: block; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  font-weight: 600;
  text-wrap: balance;
}
p { text-wrap: pretty; }

@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;
  }
}

/* ---------- 3. Utility / layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}
.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
  background: var(--paper);
}
.section-alt { background: var(--paper-alt); }
.section-dark {
  background: var(--navy-950);
  color: var(--text-on-dark);
}
.section-dark h2, .section-dark h3 { color: #fff; }

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-600);
  margin-bottom: var(--space-sm);
}
.section-dark .eyebrow { color: var(--accent); }
.eyebrow::before {
  content: "";
  width: 1.5em;
  height: 2px;
  background: currentColor;
  display: inline-block;
}
h2.section-title { font-size: var(--fs-2xl); margin-bottom: var(--space-sm); }
.section-lede { font-size: var(--fs-md); max-width: 42rem; }
.section-dark .section-lede { color: var(--text-on-dark-muted); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -60px;
  background: var(--accent);
  color: var(--navy-950);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 1000;
  transition: top 0.2s var(--ease);
}
.skip-link:focus {
  top: 1rem;
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--fs-sm);
  border: 2px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--accent);
  color: var(--navy-950);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { box-shadow: 0 12px 30px var(--accent-glow); }
.btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

/* ---------- 5. Header / nav ---------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(10, 14, 26, 0.0);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), backdrop-filter 0.3s var(--ease);
}
.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-md);
  color: #fff;
  letter-spacing: 0.01em;
}
.logo span { color: var(--accent); }

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  z-index: 950;
  position: relative;
}
.nav-toggle .bar {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle .bar + .bar { margin-top: 6px; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.primary-nav {
  position: fixed;
  inset-inline-end: 0;
  inset-block-start: var(--header-h);
  height: calc(100dvh - var(--header-h));
  width: min(78vw, 340px);
  background: var(--navy-950);
  border-left: 1px solid var(--border-dark);
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  overflow-y: auto;
}
.primary-nav.is-open { transform: translateX(0); }
.primary-nav ul {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg) var(--space-lg);
  gap: var(--space-2xs);
}
.primary-nav a {
  display: flex;
  align-items: center;
  min-height: 48px;
  color: var(--text-on-dark);
  font-weight: 600;
  font-size: var(--fs-md);
  border-bottom: 1px solid var(--border-dark);
}
.primary-nav a:hover,
.primary-nav a.is-active { color: var(--accent); }
.primary-nav .nav-cta {
  margin-top: var(--space-sm);
  justify-content: center;
  background: var(--accent);
  color: var(--navy-950);
  border-radius: var(--radius-full);
  border-bottom: none;
  padding-inline: 1.5rem;
}

.nav-scrim {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 14, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
  z-index: 890;
}
.nav-scrim.is-open { opacity: 1; pointer-events: auto; }

@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .primary-nav {
    position: static;
    height: auto;
    width: auto;
    background: transparent;
    border-left: none;
    transform: none;
    overflow: visible;
  }
  .primary-nav ul { flex-direction: row; align-items: center; padding: 0; gap: var(--space-lg); }
  .primary-nav a {
    min-height: auto;
    border-bottom: none;
    font-size: var(--fs-sm);
    padding-block: 0.4rem;
    position: relative;
  }
  .primary-nav a:not(.nav-cta)::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -4px;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s var(--ease);
  }
  .primary-nav a:not(.nav-cta):hover::after,
  .primary-nav a.is-active::after { transform: scaleX(1); }
  .primary-nav .nav-cta { margin-top: 0; padding: 0.6rem 1.25rem; }
  .nav-scrim { display: none; }
}

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block-start: var(--header-h);
  background:
    radial-gradient(ellipse 80% 60% at 85% 10%, rgba(242,169,59,0.16), transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 90%, rgba(242,169,59,0.08), transparent 60%),
    linear-gradient(160deg, var(--navy-950), #0D1220 55%, var(--navy-900));
  color: var(--text-on-dark);
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 60% 40%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-2xl);
  max-width: 56rem;
}
.hero h1 {
  color: #fff;
  font-size: var(--fs-4xl);
  margin-block: var(--space-md) var(--space-md);
}
.hero-sub {
  font-size: var(--fs-md);
  color: var(--text-on-dark-muted);
  max-width: 42rem;
  margin-bottom: var(--space-xl);
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}
.hero-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-dark);
}
.stat dt {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  color: var(--accent);
  font-weight: 600;
  line-height: 1;
  margin-bottom: var(--space-2xs);
}
.stat dd { font-size: var(--fs-sm); color: var(--text-on-dark-muted); max-width: 20rem; }

.scroll-cue {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background: transparent;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-full);
  width: 32px;
  height: 52px;
  display: none;
}
.scroll-cue::before {
  content: "";
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: var(--radius-full);
  transform: translateX(-50%);
  animation: scrollcue 1.8s infinite;
}
@keyframes scrollcue {
  0% { opacity: 1; top: 8px; }
  70% { opacity: 0; top: 26px; }
  100% { opacity: 0; top: 26px; }
}

@media (min-width: 560px) {
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 768px) {
  .scroll-cue { display: block; }
}

/* ---------- 7. About ---------- */
.about-grid {
  display: grid;
  gap: var(--space-xl);
}
.about-copy p + p { margin-top: var(--space-sm); }
.about-copy p { font-size: var(--fs-base); }
.about-highlights {
  display: grid;
  gap: var(--space-md);
  align-content: start;
}
.highlight-card {
  background: var(--paper);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}
.highlight-card h3 {
  font-size: var(--fs-sm);
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-600);
  margin-bottom: var(--space-2xs);
}
.highlight-card p { font-size: var(--fs-sm); color: var(--text-muted); }
.highlight-card ul { display: flex; flex-direction: column; gap: 0.35rem; }
.highlight-card li { font-size: var(--fs-sm); }

@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1.4fr 1fr; align-items: start; }
}

/* ---------- 8. Process cards ---------- */
.process-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}
.process-card {
  background: var(--paper);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.process-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process-num {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-sm);
}
.process-card h3 { font-size: var(--fs-md); margin-bottom: var(--space-2xs); }
.process-card p { font-size: var(--fs-sm); }

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

/* ---------- 9. Tools ---------- */
.tools-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}
.tool-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--navy-950);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 0%, rgba(242,169,59,0.18), transparent 60%);
}
.tool-card > * { position: relative; }
.tool-card h3 { color: #fff; font-size: var(--fs-md); margin-bottom: var(--space-2xs); }
.tool-card p { color: var(--text-on-dark-muted); font-size: var(--fs-sm); }

@media (min-width: 640px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1100px) {
  .tools-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- 10. Portfolio ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-xl);
}
.chip {
  min-height: 44px;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-light);
  background: var(--paper);
  color: var(--text-muted);
  font-weight: 600;
  font-size: var(--fs-sm);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.chip:hover { border-color: var(--accent-600); color: var(--accent-600); }
.chip[aria-pressed="true"] {
  background: var(--navy-950);
  border-color: var(--navy-950);
  color: #fff;
}
.chip[aria-pressed="true"]:hover { color: var(--accent); }

.portfolio-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}
.project-card {
  background: var(--paper);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.project-thumb { aspect-ratio: 16 / 10; overflow: hidden; background: var(--navy-900); }
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.project-card:hover .project-thumb img { transform: scale(1.04); }
.project-body { padding: var(--space-md); display: flex; flex-direction: column; gap: var(--space-2xs); flex: 1; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.25rem; }
.project-tag {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent-600);
  background: rgba(242,169,59,0.12);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}
.project-body h3 { font-size: var(--fs-md); }
.project-body p { font-size: var(--fs-sm); }
.project-link {
  margin-top: auto;
  padding-top: var(--space-sm);
  font-weight: 700;
  font-size: var(--fs-sm);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.project-link .arrow { transition: transform 0.25s var(--ease); }
.project-card:hover .project-link .arrow,
.project-link:focus-visible .arrow { transform: translateX(4px); }
.project-card.is-hidden { display: none; }

@media (min-width: 700px) {
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1200px) {
  .project-card:nth-child(4n+1) { grid-column: span 2; }
  .project-card:nth-child(4n+1) .project-thumb { aspect-ratio: 21 / 9; }
}

/* ---------- 11. Testimonials ---------- */
.testimonial-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}
.testimonial-card {
  background: var(--paper);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.testimonial-quote {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  color: var(--ink);
  line-height: 1.45;
  position: relative;
}
.testimonial-quote::before {
  content: "\201C";
  color: var(--accent);
  font-size: 1.4em;
  line-height: 0;
  display: inline-block;
  vertical-align: -0.15em;
  margin-right: 0.1em;
}
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.author-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--navy-950);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  flex-shrink: 0;
}
.author-name { font-weight: 700; color: var(--ink); font-size: var(--fs-sm); }
.author-role { font-size: var(--fs-xs); color: var(--text-muted); }

@media (min-width: 720px) {
  .testimonial-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 12. Contact ---------- */
.contact-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  align-items: flex-start;
}
.contact-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.contact-list a, .contact-list span {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-md);
  color: #fff;
  font-weight: 600;
}
.contact-list a { border-bottom: 2px solid transparent; }
.contact-list a:hover { border-color: var(--accent); }
.contact-list .icon { color: var(--accent); flex-shrink: 0; }

@media (min-width: 860px) {
  .contact-inner { flex-direction: row; justify-content: space-between; align-items: center; }
}

/* ---------- 13. Footer ---------- */
.site-footer {
  background: var(--navy-950);
  color: var(--text-on-dark-muted);
  padding-block: var(--space-lg);
  border-top: 1px solid var(--border-dark);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  text-align: center;
  font-size: var(--fs-xs);
}
.footer-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-dark);
  color: var(--text-on-dark);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.footer-social:hover { border-color: var(--accent); color: var(--accent); }

@media (min-width: 640px) {
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}

/* ---------- 14. Entrance animation ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}
[data-animate-group] > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-animate-group].in-view > * {
  opacity: 1;
  transform: translateY(0);
}
[data-animate-group].in-view > *:nth-child(1) { transition-delay: 0.02s; }
[data-animate-group].in-view > *:nth-child(2) { transition-delay: 0.09s; }
[data-animate-group].in-view > *:nth-child(3) { transition-delay: 0.16s; }
[data-animate-group].in-view > *:nth-child(4) { transition-delay: 0.23s; }
[data-animate-group].in-view > *:nth-child(5) { transition-delay: 0.3s; }
[data-animate-group].in-view > *:nth-child(6) { transition-delay: 0.37s; }

@media (prefers-reduced-motion: reduce) {
  [data-animate], [data-animate-group] > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---------- 15. Case study template ---------- */
.case-hero {
  background: linear-gradient(160deg, var(--navy-950), var(--navy-900));
  color: var(--text-on-dark);
  padding-block: calc(var(--header-h) + var(--space-xl)) var(--space-2xl);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: var(--fs-xs);
  color: var(--text-on-dark-muted);
  margin-bottom: var(--space-md);
}
.breadcrumb a { color: var(--text-on-dark-muted); }
.breadcrumb a:hover { color: var(--accent); }
.case-hero h1 { color: #fff; font-size: var(--fs-3xl); max-width: 42rem; }
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-dark);
}
.case-meta-item dt {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.2rem;
  font-weight: 700;
}
.case-meta-item dd { font-size: var(--fs-sm); color: var(--text-on-dark-muted); }

.case-body { padding-block: var(--space-2xl); }
.case-section { max-width: 48rem; margin-inline: auto; }
.case-section + .case-section { margin-top: var(--space-2xl); }
.case-section h2 {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.case-section h2 .step-num { color: var(--accent-600); font-size: var(--fs-sm); font-family: var(--font-body); font-weight: 700; }
.case-section p + p { margin-top: var(--space-sm); }
.case-section ul { margin-top: var(--space-sm); display: flex; flex-direction: column; gap: 0.5rem; }
.case-section li {
  padding-left: 1.4rem;
  position: relative;
}
.case-section li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
}
.case-figure {
  margin-top: var(--space-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--paper-alt);
}
.case-figure img { width: 100%; height: auto; }
.case-figure figcaption {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
}
.case-figure-row {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .case-figure-row.two-up { grid-template-columns: 1fr 1fr; }
}

.case-quote {
  max-width: 48rem;
  margin: var(--space-2xl) auto;
  padding: var(--space-lg);
  border-left: 4px solid var(--accent);
  background: var(--paper-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.case-quote p {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--ink);
}
.case-quote cite { display: block; margin-top: var(--space-sm); font-size: var(--fs-sm); font-style: normal; color: var(--text-muted); }

.case-nav {
  border-top: 1px solid var(--border-light);
  padding-block: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.case-nav-links { display: flex; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap; }
.case-nav-link {
  font-weight: 700;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  max-width: 20rem;
}
.case-nav-link small { color: var(--accent-600); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.05em; }
.case-nav-link.next { text-align: right; margin-left: auto; }

/* ---------- 16. Misc responsive polish ---------- */
@media (max-width: 359px) {
  .container { padding-inline: 1rem; }
}
.icon { width: 1.2em; height: 1.2em; fill: none; stroke: currentColor; stroke-width: 2; }

::selection { background: var(--accent); color: var(--navy-950); }