/* ------------------------------------------------------------------
   IIMA Ventures — Home page
   Extends styles.css (shared header, footer, logo grid, tokens).
------------------------------------------------------------------- */

.accent { color: var(--red); }

/* Greylock display type: h2 = 81px / 0.9, h1 = 88px */
.display {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 40px;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
.display-s {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 32px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
.body-m { font-size: 18px; line-height: 1.3; margin: 0; text-wrap: pretty; }
@media (min-width: 768px) {
  .display { font-size: 56px; letter-spacing: -0.025em; }
  .display-s { font-size: 40px; }
  .body-m { font-size: 20px; }
}
@media (min-width: 1024px) {
  .display { font-size: 81px; line-height: .9; letter-spacing: -0.03em; }
  .display-s { font-size: 51px; line-height: .98; }
}

/* ---------------- Hero ---------------- */
.home-hero { background: var(--paper); }
.home-hero-top {
  min-height: min(calc(100svh - var(--header-h)), 440px);
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  padding: 32px 16px 40px;
  gap: 20px;
}
.home-hero-eyebrow { color: var(--charcoal-500); }
.home-hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 51px;
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 0;
  max-width: 12ch;
}
.home-hero-title .block { display: block; }
@media (min-width: 1024px) { .home-hero-title { font-size: 88px; letter-spacing: -0.03em; } }
.home-hero-desc {
  font-size: 20px;
  line-height: 1.25;
  max-width: 22ch;
  margin: 0;
  text-wrap: balance;
  color: var(--charcoal);
}
@media (min-width: 1024px) { .home-hero-desc { font-size: 32px; max-width: none; text-wrap: initial; white-space: nowrap; } }
.home-hero-desc.reveal { animation-delay: .35s; }

/* Big media block: starts inset, expands to full width as the user scrolls (Greylock hero) */
.home-hero-media {
  position: relative;
  margin: 0 16px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--charcoal);
  clip-path: inset(0 9% round 2px); /* resting state; home.js animates this on scroll */
  opacity: 0;
  animation: media-in 1s var(--ease) .4s forwards;
  will-change: clip-path;
}
.home-hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.1);
  will-change: transform;
}
.home-hero-media-caption {
  position: absolute; left: 20px; bottom: 16px;
  color: rgba(237, 237, 237, .85);
  mix-blend-mode: screen;
}
@keyframes media-in { to { opacity: 1; } }

/* ---------------- Portfolio grid ---------------- */
.home-portfolio { padding-top: 56px; }
@media (min-width: 1024px) { .home-portfolio { padding-top: 88px; } }
.home-section-head { padding: 0 24px 28px; }
@media (min-width: 1024px) { .home-section-head { padding: 0 48px 36px; } }
.home-section-head .display { max-width: 14ch; }

.home .logo-grid { margin-top: 0; border-bottom: 1px solid var(--sage-200); }
.home .filters { border-top: 1px solid var(--sage-200); }
.home .active-chips:not(:empty) { padding-bottom: 16px; }
.grid-more {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 24px;
  border-top: 1px solid var(--sage-200);
  color: var(--charcoal-900);
  transition: background-color .25s var(--ease), color .25s var(--ease);
}
.grid-more svg { transition: transform .3s var(--ease); }
.grid-more:hover { background: var(--paper-200); color: var(--red); }
.grid-more:hover svg { transform: translateX(6px); }

/* ---------------- Stories carousel ---------------- */
.home-stories { padding: 56px 0 0; }
@media (min-width: 1024px) { .home-stories { padding-top: 88px; } }
.stories-frame {
  margin: 0;
  border-top: 0;
  position: relative;
}
.stories-frame::before {
  content: "";
  position: absolute; inset: 0 0 auto 0;
  height: 1px; background: var(--charcoal-200);
}
.stories-viewport { overflow: hidden; cursor: grab; }
.stories-viewport:active { cursor: grabbing; }
.stories-track {
  display: flex;
  transition: transform .7s var(--ease);
  will-change: transform;
}
.stories-track.is-dragging { transition: none; }
.story {
  flex: 0 0 100%;
  min-width: 0;
  position: relative;
  user-select: none;
  background: var(--paper);
}

/* Full-bleed photo that fades into the paper background (Greylock founder stories) */
.story-media {
  position: relative;
  width: 100%;
  height: clamp(320px, 56vw, 720px);
  overflow: hidden;
  background: var(--sage-200);
}
@media (min-width: 1024px) { .story-media { height: clamp(560px, 50vw, 760px); } }
.story-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.06);
  transition: transform 6s linear;
}
.story.is-active .story-media img { transform: scale(1); }
.story-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(237, 237, 237, 0) 35%, rgba(237, 237, 237, .78) 72%, var(--paper) 100%);
}

.story-body {
  display: grid;
  gap: 20px;
  padding: 20px 24px 80px;
}
@media (min-width: 1024px) {
  .story-body {
    position: absolute; left: 0; right: 0; bottom: 0;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 48px;
    align-items: end;
    padding: 0 32px 44px;
  }
}
.story-logo {
  display: flex; align-items: center;
  height: 64px;
}
.story-logo img { max-height: 44px; max-width: 240px; width: auto; object-fit: contain; }
.story-text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0 0 20px;
  max-width: 24ch;
  text-wrap: balance;
}
@media (min-width: 1024px) { .story-text { font-size: 40px; } }
.story-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.story-meta .body { color: var(--charcoal-600); font-size: 15px; }
.story-meta .dot { width: 7px; height: 7px; background: var(--sage-400, #b8b9a8); }
.story-link { color: var(--red); }
.story-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.stories-controls {
  position: absolute; right: 24px; bottom: 32px;
  display: flex; align-items: center; gap: 24px;
  z-index: 2;
}
@media (min-width: 1024px) { .stories-controls { right: 40px; bottom: 48px; } }
.stories-dots { display: flex; gap: 6px; }
.stories-dot {
  width: 8px; height: 8px;
  background: var(--charcoal-300);
  transition: background-color .3s var(--ease), width .3s var(--ease);
}
.stories-dot[aria-selected="true"] { background: var(--red); width: 26px; }
.stories-arrows { display: flex; gap: 4px; }
.stories-arrow {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--charcoal-200);
  color: var(--charcoal-900);
  transition: border-color .2s, color .2s, background-color .2s;
}
.stories-arrow:hover { border-color: var(--red); color: var(--red); }

/* ---------------- Builders ---------------- */
.home-builders { padding-top: 48px; }
@media (min-width: 1024px) { .home-builders { padding-top: 72px; } }
.builders-head {
  display: grid;
  gap: 32px;
  padding: 0 24px;
}
@media (min-width: 1024px) {
  .builders-head { grid-template-columns: 1fr 1fr; gap: 48px; padding: 0 48px; }
  .builders-copy { display: flex; justify-content: flex-end; padding-top: 48px; }
  .builders-copy p { max-width: 544px; }
}
.builders-head .display .block { display: block; }

.builders-lines { margin-top: 32px; border-top: 1px solid var(--sage-200); }
@media (min-width: 1024px) { .builders-lines { margin-top: 40px; } }
.builders-lines svg, .quote-lines svg { display: block; width: 100%; height: auto; }
.builders-lines svg { aspect-ratio: 1375 / 120; }
.builders-lines .draw, .quote-lines .draw {
  stroke: var(--sage-300);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 3000;
  stroke-dashoffset: 3000;
}
.is-inview .draw { animation: line-draw 2.2s var(--ease) forwards; }
@keyframes line-draw { to { stroke-dashoffset: 0; } }

.builders-photos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  border-top: 1px solid var(--sage-200);
}
@media (min-width: 1024px) { .builders-photos { grid-template-columns: 1fr 1fr; gap: 32px; } }
.builders-photo { margin: 0; }
.photo-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--sage-200);
  border-bottom: 1px solid var(--sage-200);
}
.builders-photo:first-child .photo-frame { border-right: 1px solid var(--sage-200); }
.builders-photo:last-child .photo-frame { border-left: 1px solid var(--sage-200); }
.photo-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform 1s var(--ease);
}
.builders-photo:hover .photo-frame img { transform: scale(1); }
.builders-photo figcaption { padding: 12px 16px 0; color: var(--charcoal-600); max-width: 520px; }

.offerings {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--sage-200);
  border-top: 1px solid var(--sage-200);
  border-bottom: 1px solid var(--sage-200);
}
@media (min-width: 640px) { .offerings { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .offerings { grid-template-columns: repeat(4, 1fr); margin-top: 48px; } }
.offering {
  background: var(--paper);
  padding: 24px 24px 28px;
  display: flex; flex-direction: column; gap: 12px;
  transition: background-color .25s var(--ease);
}
.offering:hover { background: var(--paper-200); }
.offering-num { color: var(--red); }
.offering-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.01em;
  margin: 4px 0 6px;
}
.offering .body { color: var(--charcoal-600); line-height: 1.3; }

/* ---------------- Themes ---------------- */
.home-themes { padding-top: 56px; }
@media (min-width: 1024px) { .home-themes { padding-top: 88px; } }
.themes-head { padding: 0 24px 24px; display: grid; gap: 14px; }
@media (min-width: 1024px) { .themes-head { padding: 0 48px 32px; } }
.themes-head .captions { color: var(--charcoal-500); }
.themes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--sage-200);
  border-top: 1px solid var(--sage-200);
  border-bottom: 1px solid var(--sage-200);
}
@media (min-width: 768px) { .themes-grid { grid-template-columns: repeat(3, 1fr); } }
.theme-card {
  position: relative;
  background: var(--paper);
  padding: 28px 24px 32px;
  min-height: 220px;
  display: flex; flex-direction: column; gap: 14px;
  transition: background-color .25s var(--ease);
  overflow: hidden;
}
.theme-card:hover { background: var(--paper-200); }
.theme-card::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--red);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.theme-card:hover::after { transform: scaleX(1); }
.theme-num { color: var(--charcoal-500); }
.theme-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.015em;
  margin: 8px 0 4px;
}
.theme-card .body { color: var(--charcoal-600); line-height: 1.3; max-width: 34ch; }
.theme-arrow {
  margin-top: auto;
  color: var(--charcoal-900);
  transition: transform .3s var(--ease), color .3s;
}
.theme-card:hover .theme-arrow { transform: translateX(6px); color: var(--red); }

/* ---------------- Timeline ---------------- */
.home-timeline { padding-top: 56px; }
@media (min-width: 1024px) { .home-timeline { padding-top: 88px; } }
.timeline-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 0 24px 20px;
}
@media (min-width: 1024px) { .timeline-head { padding: 0 48px 24px; } }
.timeline-head .captions { color: var(--charcoal-500); }
.timeline-hint { color: var(--charcoal-500); font-size: 13px; }
.timeline-scroller {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  border-top: 1px solid var(--sage-200);
  border-bottom: 1px solid var(--sage-200);
  scrollbar-width: none;
  cursor: grab;
}
.timeline-scroller::-webkit-scrollbar { display: none; }
.timeline-scroller.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.timeline-track {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 240px;
  gap: 1px;
  background: var(--sage-200);
}
@media (min-width: 1024px) { .timeline-track { grid-auto-columns: 280px; } }
.timeline-item {
  background: var(--paper);
  padding: 24px 22px 28px;
  min-height: 180px;
  display: flex; flex-direction: column; gap: 14px;
  scroll-snap-align: start;
  transition: background-color .25s var(--ease);
}
.timeline-item:hover { background: var(--paper-200); }
.timeline-year {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 44px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--charcoal);
}
.timeline-item.is-marker .timeline-year { color: var(--red); }
.timeline-item .body { color: var(--charcoal-600); line-height: 1.3; }

/* ---------------- Quote ---------------- */
.home-quote { padding-top: 40px; }
.home-quote .hero-frame { position: relative; padding: 72px 24px 88px; overflow: hidden; }
@media (min-width: 1024px) { .home-quote .hero-frame { padding: 112px 48px 128px; } }
.quote-lines { position: absolute; inset: auto 0 0 0; z-index: 0; opacity: .9; pointer-events: none; }
.quote {
  position: relative; z-index: 1;
  margin: 0;
  max-width: 900px;
}
.quote p {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
@media (min-width: 768px) { .quote p { font-size: 44px; line-height: .98; } }
@media (min-width: 1024px) { .quote p { font-size: 51px; letter-spacing: -0.025em; } }
.quote-attr {
  position: relative; z-index: 1;
  margin: 32px 0 0;
  display: flex; flex-direction: column; gap: 4px;
  font-size: 16px; line-height: 1.2;
}
.quote-attr strong { font-weight: 500; }
.quote-attr span { color: var(--charcoal-600); }

/* ---------------- Scroll reveal ---------------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal-on-scroll.is-inview { opacity: 1; transform: none; }
.themes-grid .reveal-on-scroll:nth-child(2), .offerings .reveal-on-scroll:nth-child(2) { transition-delay: .08s; }
.themes-grid .reveal-on-scroll:nth-child(3), .offerings .reveal-on-scroll:nth-child(3) { transition-delay: .16s; }
.offerings .reveal-on-scroll:nth-child(4) { transition-delay: .24s; }
.builders-photos .reveal-on-scroll:nth-child(2) { transition-delay: .12s; }


@media (prefers-reduced-motion: reduce) {
  .home-hero-media { animation: none; opacity: 1; clip-path: none; }
  .reveal-on-scroll { opacity: 1; transform: none; transition: none; }
  .draw { stroke-dashoffset: 0 !important; animation: none !important; }
  .stories-track { transition: none; }
}

/* ---------------- Small-screen refinements (home) ---------------- */
@media (max-width: 1023px) {
  .stories-controls { position: static; justify-content: flex-end; padding: 0 24px 28px; }
  .story-body { padding-bottom: 24px; }
  .story-media { height: clamp(260px, 60vw, 560px); }
}
@media (max-width: 767px) {
  .home-hero-title { font-size: 44px; }
  .home-hero-desc { font-size: 18px; max-width: 26ch; }
  .home-hero-desc br { display: none; }
  .home-hero-media { margin: 0 12px; }
  .story-text { font-size: 24px; }
  .story-logo { height: 48px; }
  .story-logo img { max-height: 34px; max-width: 180px; }
  .builders-copy p { font-size: 17px; }
  .timeline-track { grid-auto-columns: 210px; }
  .timeline-year { font-size: 36px; }
  .theme-card { min-height: 0; padding: 24px 20px 28px; }
  .theme-title { font-size: 28px; }
  .offering { padding: 20px 20px 24px; }
  .offering-title { font-size: 24px; }
  .quote p { font-size: 28px; }
  .home-quote .hero-frame { padding: 56px 20px 64px; }
}