/* ---------- Tokens (8pt grid) ---------- */
:root {
  --bg: #F5F0E8;
  --card: #EDE8DF;
  --ink: #1A1A1A;
  --ink-soft: #3d3d3d;
  --matcha: #7D9B6A;
  --matcha-dark: #6b8759;

  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 32px;
  --s-5: 40px;
  --s-6: 48px;
  --s-7: 56px;
  --s-8: 64px;
  --s-10: 80px;
  --s-12: 96px;

  --gutter: clamp(24px, 5vw, 72px);
  --page-max: 1440px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  width: 100%;
  overflow-x: clip; /* clip (not hidden) so position:sticky on the case cards keeps working */
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  width: 100%;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  overflow-x: clip;
  position: relative;
}

main { display: block; width: 100%; }

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

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

/* ---------- Hero: fullscreen video with overlay ---------- */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
}

.hero__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

/* Reduced motion: swap video for a cream field */
.reduced-motion .hero__video { display: none; }

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  padding: var(--s-8) var(--gutter) calc(var(--s-10) + 92px);
  pointer-events: none;
}

.hero__content {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  pointer-events: auto;
}

.hero__role {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: clamp(11px, 1.1vw, 13px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0;
  color: var(--ink);
  text-shadow: 0 1px 12px rgba(245, 240, 232, 0.8);
}

.hero__subline {
  font-family: 'Playfair Display', 'Times New Roman', serif;
  font-style: italic;
  font-weight: 400;
  font-size: clamp(18px, 2.6vw, 34px);
  line-height: 1.35;
  color: var(--ink);
  margin: 0;
  max-width: 22ch;
  text-shadow: 0 1px 12px rgba(245, 240, 232, 0.8);
}

/* ---------- CTA button ---------- */
.cta {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  background: var(--matcha);
  color: #ffffff;
  padding: 14px 26px;
  border-radius: 999px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  align-self: flex-start;
  margin-top: var(--s-2);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 0 rgba(0,0,0,0.06);
}

.cta:hover {
  background: var(--matcha-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 22px -6px rgba(125, 155, 106, 0.55);
}

.cta svg { flex-shrink: 0; }

/* ---------- Featured Work ---------- */
.featured {
  position: relative;
  z-index: 3;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--s-10) var(--gutter) 240px;
}

.featured__intro {
  margin-bottom: var(--s-8);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
}

.featured__eyebrow {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.18em;
  margin: 0;
  color: var(--ink);
}

.featured__heading {
  font-family: 'Playfair Display', 'Times New Roman', serif;
  font-style: italic;
  font-weight: 500;
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.15;
  margin: 0;
  color: var(--ink);
}

/* ---------- Sticky stacking cards ---------- */
.stack {
  display: flex;
  flex-direction: column;
  gap: 42vh;
  padding-bottom: 200px;
}

.case-card {
  --progress: 0;
  position: sticky;
  top: calc(72px + var(--i, 0) * 22px);
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 0;
  align-items: stretch;
  padding: 0;
  border-radius: 28px;
  border: 1px solid rgba(0,0,0,0.08);
  min-height: 62vh;
  background: var(--card);
  color: var(--ink);
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.6) inset,
    0 30px 60px -30px rgba(0,0,0,0.18),
    0 6px 20px -8px rgba(0,0,0,0.08);
  transform-origin: 50% 0;
  transform: scale(calc(1 - var(--progress) * 0.05)) translateY(calc(var(--progress) * -8px));
  transition: transform 80ms linear;
  will-change: transform;
}

/* Static fallback for reduced motion or mobile */
.stack--static { gap: var(--s-6); padding-bottom: var(--s-8); }
.stack--static .case-card {
  position: relative;
  top: auto;
  transform: none;
  transition: none;
}

.case-card__meta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--s-3);
  padding: clamp(28px, 4vw, 56px);
}

.case-card__tags {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0;
  opacity: 0.75;
}

.case-card__title {
  font-family: 'Playfair Display', 'Times New Roman', serif;
  font-weight: 500;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0;
}

.case-card__desc {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
  max-width: 46ch;
  opacity: 0.85;
}

.case-card__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  padding-bottom: 4px;
  border-bottom: 1.5px solid currentColor;
  align-self: flex-start;
  transition: gap 0.2s ease, opacity 0.2s ease;
  margin-top: var(--s-2);
}

.case-card__link:hover { gap: 14px; opacity: 0.75; }

/* ---------- Case card mockup (right column, bleeds to card edges) ---------- */
.case-card__mockup {
  position: relative;
  overflow: hidden;
  min-height: 100%;
}
.case-card__mockup img {
  position: absolute;
  inset: 0;
}

.mockup {
  position: absolute;
  inset: 0;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.5) 0%, rgba(255,255,255,0.15) 100%);
}

.mockup__bar {
  display: flex;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
.mockup__dot { width: 10px; height: 10px; border-radius: 999px; background: rgba(0,0,0,0.18); }
.mockup__grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: 10px;
}
.mockup__tile { background: rgba(0,0,0,0.1); border-radius: 8px; }
.mockup__tile--wide { grid-column: span 2; }
.mockup__tile--tall { grid-row: span 2; }

/* Marketing mockup */
.mockup__hero { padding: 8px 4px; display: flex; flex-direction: column; gap: 10px; }
.mockup__line { height: 10px; border-radius: 4px; background: rgba(0,0,0,0.18); }
.mockup__line--xl { height: 22px; width: 80%; }
.mockup__line--lg { height: 14px; width: 60%; }
.mockup__line--sm { height: 10px; width: 45%; opacity: 0.6; }
.mockup__pill { width: 96px; height: 30px; border-radius: 999px; background: var(--matcha); margin-top: 4px; }
.mockup__cards { flex: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: auto; }
.mockup__minicard { background: rgba(0,0,0,0.08); border-radius: 10px; }

/* Edu mockup */
.mockup__nav { display: flex; gap: 8px; padding-bottom: 10px; border-bottom: 1px solid rgba(0,0,0,0.08); }
.mockup__navdot { width: 40px; height: 8px; border-radius: 4px; background: rgba(0,0,0,0.18); }
.mockup__course { flex: 1; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.mockup__thumb { background: rgba(0,0,0,0.1); border-radius: 10px; min-height: 40px; }
.mockup__progress { height: 6px; border-radius: 999px; background: rgba(0,0,0,0.08); position: relative; overflow: hidden; }
.mockup__progress::after { content: ""; position: absolute; inset: 0 40% 0 0; background: var(--matcha); border-radius: 999px; }

/* ---------- Floating bottom nav ---------- */
.floating-nav {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 100;
  padding: 8px 8px 8px 20px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.72);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow:
    0 2px 0 rgba(255,255,255,0.6) inset,
    0 12px 30px -12px rgba(0,0,0,0.22),
    0 4px 12px -6px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: var(--s-3);
}

.floating-nav__brand {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink);
  white-space: nowrap;
  padding-right: var(--s-3);
  border-right: 1px solid rgba(0,0,0,0.12);
}

.floating-nav__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.floating-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.floating-nav__links a:hover,
.floating-nav__links a:focus-visible,
.floating-nav__links a.nav--active {
  background: var(--matcha);
  color: #ffffff;
  outline: none;
}

.floating-nav__icon {
  width: 18px;
  height: 18px;
  display: none;
  flex-shrink: 0;
}

/* ---------- Responsive ---------- */

/* Tablet + mobile: single-column cards, video stacks naturally, overlay sits below */
@media (max-width: 900px) {
  .case-card {
    min-height: auto;
    position: relative;
    top: auto;
    transform: none;
  }
  .stack { gap: var(--s-4); padding-bottom: 0; }
  .featured { padding-bottom: 160px; }

  /* Hero becomes a vertical stack: video (natural aspect, full width) + overlay right below */
  .hero {
    height: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
  }
  .hero__video {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    height: auto;
    object-fit: initial;
    background: var(--bg);
  }
  .hero__overlay {
    position: relative;
    inset: auto;
    flex: 0 0 auto;
    align-items: flex-start;
    padding: var(--s-3) var(--gutter) 0;
    background: none;
  }
  .hero__content { gap: var(--s-2); }
  .hero__subline { max-width: 26ch; }

  .featured { padding-top: var(--s-3); }
}

/* Case card stacking: below 768px, image on top (200px), text below */
@media (max-width: 767px) {
  .case-card { grid-template-columns: 1fr; }
  .case-card__mockup { order: 1; height: 200px; min-height: 200px; }
  .case-card__meta { order: 2; padding: var(--s-4); }
}

/* Mobile: nav collapses to icons, tighter typography */
@media (max-width: 720px) {
  .hero__subline {
    font-size: clamp(17px, 4.6vw, 22px);
    max-width: 100%;
  }
  .hero__role { font-size: 11px; letter-spacing: 0.16em; }
  .cta { padding: 12px 22px; font-size: 13px; }

  .floating-nav {
    padding: 6px 6px 6px 14px;
    gap: var(--s-2);
    bottom: 16px;
    max-width: calc(100vw - 24px);
  }
  .floating-nav__brand {
    font-size: 11px;
    letter-spacing: 0.18em;
    padding-right: var(--s-2);
  }
  .floating-nav__label { display: none; }
  .floating-nav__icon { display: block; }
  .floating-nav a { padding: 10px 12px; }
}

/* Small mobile: further compression */
@media (max-width: 480px) {
  :root { --gutter: 20px; }
  .featured { padding-top: var(--s-3); padding-bottom: 140px; }
  .featured__intro { margin-bottom: var(--s-5); }
  .case-card { border-radius: 20px; padding: var(--s-3); }
  .case-card__title { font-size: 24px; }
  .hero__subline { font-size: 18px; line-height: 1.3; }
  .hero__role { font-size: 10.5px; letter-spacing: 0.14em; }
  .cta { padding: 11px 20px; font-size: 13px; }

  .floating-nav {
    padding: 5px 5px 5px 12px;
    gap: 6px;
    bottom: 12px;
  }
  .floating-nav__brand {
    font-size: 10px;
    letter-spacing: 0.16em;
    padding-right: 10px;
  }
  .floating-nav a { padding: 9px 10px; }
  .floating-nav__icon { width: 17px; height: 17px; }
}

/* Ultra-narrow: keep brand + icons from wrapping */
@media (max-width: 360px) {
  .floating-nav__brand { font-size: 9.5px; letter-spacing: 0.12em; padding-right: 8px; }
  .floating-nav a { padding: 9px 8px; }
  .floating-nav__links { gap: 2px; }
}

/* ---------- Reduce motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .case-card { position: relative; top: auto; transform: none; }
  .stack { gap: var(--s-6); padding-bottom: var(--s-8); }
}