:root {
  color-scheme: light;
  --white: #ffffff;
  --blue: #037ef3;
  --blue-deep: #0257b3;
  --ink: #0b2a5b;
  --ink-soft: #4a5f80;
  --sky: #eaf4fe;
  --line: #d6e6f8;

  --teal: #0cb9c1;
  --orange: #f48924;
  --coral: #f85a40;
  --yellow: #ffc845;
  --green: #00c16e;
  --purple: #7552cc;
  --slate: #52565e;

  --d1950: #037ef3;
  --d1960: #f85a40;
  --d1970: #0cb9c1;
  --d1980: #ffc845;
  --d1990: #00c16e;
  --d2000: #f48924;
  --d2010: #7552cc;
  --d2020: #52565e;

  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --body: "Lato", system-ui, sans-serif;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1180px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

h1, h2, h3 {
  font-family: var(--display);
  color: var(--ink);
  margin: 0;
  font-optical-sizing: auto;
}

h2 {
  font-size: clamp(2rem, 4.6vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 700;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.005em;
  font-weight: 650;
}

p { margin: 0; }

a { color: var(--blue); text-underline-offset: 3px; }

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font: 700 1rem/1 var(--body);
  text-decoration: none;
  border: 2px solid var(--blue);
  transition: transform 100ms ease-out, background-color 160ms ease;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { background: var(--blue-deep); border-color: var(--blue-deep); }
.btn:active { transform: scale(0.97); }

.btn-ghost { background: transparent; color: var(--blue); }
.btn-ghost:hover { background: var(--sky); border-color: var(--blue); }

.btn-light { background: var(--white); color: var(--blue); border-color: var(--white); }
.btn-light:hover { background: var(--sky); border-color: var(--sky); }

.btn-small { min-height: 40px; padding: 0 18px; font-size: 0.9375rem; }

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px var(--gutter);
  padding-top: max(12px, env(safe-area-inset-top));
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease;
}
.topbar.is-scrolled { border-bottom-color: var(--line); }

.topbar-logo img { height: 30px; width: auto; }

.topbar-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.topbar-nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 8px 12px;
  border-radius: 999px;
  transition: background-color 160ms ease, color 160ms ease;
}
.topbar-nav a:hover { background: var(--sky); }
.topbar-nav a.is-active { background: var(--sky); color: var(--blue); }

/* Hero */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(32px, 7vw, 96px) var(--gutter) clamp(56px, 8vw, 112px);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.hero-kicker {
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(3.25rem, 9vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 800;
}

.hero-lede {
  margin-top: 24px;
  font-size: clamp(1.125rem, 1.6vw, 1.3125rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 34em;
}

.hero-meta {
  margin: 32px 0 0;
  display: grid;
  gap: 2px;
  border-left: 4px solid var(--blue);
  padding-left: 16px;
}
.hero-meta div { display: flex; gap: 12px; }
.hero-meta dt { width: 3.5em; flex: none; color: var(--ink-soft); }
.hero-meta dd { margin: 0; font-weight: 700; }

.hero-actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.seventy { margin: 0; }
.seventy svg { width: 100%; height: auto; display: block; overflow: hidden; }
.seventy-type {
  font-family: var(--display);
  font-weight: 800;
  font-size: 760px;
  letter-spacing: -0.04em;
}
.seventy figcaption {
  margin-top: 16px;
  text-align: right;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

.band {
  transform-box: fill-box;
  transform-origin: left center;
  animation: band-in 900ms cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: calc(var(--i) * 70ms + 150ms);
}
@keyframes band-in {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.confetti > * {
  transform-box: fill-box;
  transform-origin: center;
  animation: pop-in 600ms cubic-bezier(0.34, 1.4, 0.64, 1) both;
  animation-delay: calc(var(--i) * 60ms + 500ms);
}
@keyframes pop-in {
  from { opacity: 0; scale: 0; }
  to { opacity: 1; scale: 1; }
}

/* Sponsor */
.sponsor {
  max-width: calc(var(--max) - 2 * var(--gutter));
  margin: 0 auto clamp(48px, 6vw, 80px);
  padding: 28px clamp(24px, 4vw, 48px);
  border-radius: 28px;
  background: var(--sky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.sponsor p {
  font-family: var(--display);
  font-weight: 650;
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  letter-spacing: -0.01em;
}
.sponsor img { height: clamp(52px, 6vw, 72px); width: auto; }

@media (max-width: 1240px) {
  .sponsor { margin-left: var(--gutter); margin-right: var(--gutter); }
}
@media (max-width: 600px) {
  .sponsor { flex-direction: column; align-items: flex-start; }
}

/* Sections */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(64px, 9vw, 120px) var(--gutter);
}

.section-head {
  max-width: 40rem;
  margin-bottom: clamp(32px, 5vw, 56px);
}
.section-head p {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 1.125rem;
}

/* Program */
.program { padding-top: clamp(24px, 4vw, 48px); }

.schedule {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 52rem;
  position: relative;
}
.schedule::before {
  content: "";
  position: absolute;
  left: 7.25rem;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--line);
}

.schedule li {
  position: relative;
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 2.5rem;
  padding: 18px 20px 18px 0;
  border-radius: 18px;
  transition: background-color 300ms ease;
}
.schedule li::before {
  content: "";
  position: absolute;
  left: calc(7.25rem - 5px);
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--blue);
}

.schedule time {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--blue);
  text-align: right;
  padding-top: 1px;
  font-variant-numeric: tabular-nums;
}

.schedule p { margin-top: 4px; color: var(--ink-soft); }

.schedule-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  transition: background-color 160ms ease, transform 100ms ease-out;
}
.schedule-link:hover { background: var(--blue-deep); }
.schedule-link:active { transform: scale(0.97); }

.schedule li.is-past { opacity: 0.5; }
.schedule li.is-now { background: var(--sky); }
.schedule li.is-now::before { background: var(--blue); box-shadow: 0 0 0 6px rgba(3, 126, 243, 0.18); }
.schedule li.is-now h3::after {
  content: "Happening now";
  display: inline-block;
  margin-left: 10px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font: 700 0.75rem/1.4 var(--body);
  vertical-align: 3px;
}

/* Give */
.give {
  background: var(--blue);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.give-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(72px, 10vw, 128px) var(--gutter);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}
.give h2 { color: var(--white); font-size: clamp(2.5rem, 6vw, 4.25rem); letter-spacing: -0.03em; font-weight: 800; }
.give-text > p { margin-top: 20px; font-size: 1.125rem; max-width: 32em; color: rgba(255, 255, 255, 0.9); }
.give-text strong { color: var(--white); }
.give .btn { margin-top: 32px; }
.give-fine { font-size: 0.9375rem !important; color: rgba(255, 255, 255, 0.75) !important; }

.dots { margin: 0; }
.dots-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: clamp(8px, 1.4vw, 14px);
}
.dots-grid span {
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--dot);
}
.dots figcaption {
  margin-top: 16px;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.8);
}

/* Get involved */
.involved-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.involved-feature {
  padding: clamp(28px, 4vw, 40px);
  border-radius: 28px;
  background: var(--sky);
  border: 2px solid var(--blue);
}
.involved-feature h3 { font-size: clamp(1.5rem, 2.6vw, 1.875rem); line-height: 1.15; letter-spacing: -0.015em; }
.involved-feature p { margin: 14px 0 28px; color: var(--ink-soft); }

.involved-list { list-style: none; margin: 0; padding: 0; }
.involved-list > li {
  padding: 4px 0 4px 24px;
  border-left: 4px solid var(--c);
}
.involved-list > li + li { margin-top: 32px; }
.involved-list p { margin-top: 6px; color: var(--ink-soft); }

.chips {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chips li {
  padding: 7px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9375rem;
  background: color-mix(in srgb, var(--chip) 16%, white);
  color: color-mix(in srgb, var(--chip) 70%, var(--ink));
}
.chips li:nth-child(1) { --chip: var(--teal); }
.chips li:nth-child(2) { --chip: var(--coral); }
.chips li:nth-child(3) { --chip: var(--orange); }
.chips li:nth-child(4) { --chip: var(--blue); }

/* Decades */
.decades { padding-top: 0; }

.prelude {
  max-width: 44rem;
  margin-bottom: 48px;
  font-size: 1.125rem;
  color: var(--ink-soft);
}
.prelude strong { color: var(--ink); }

.timeline { list-style: none; margin: 0; padding: 0; }

.decade {
  display: grid;
  grid-template-columns: minmax(9rem, 14rem) 1fr;
  gap: clamp(16px, 4vw, 56px);
  padding: 32px 0;
  border-top: 1px solid var(--line);
}
.decade:last-child { border-bottom: 1px solid var(--line); }

.decade h3 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 800;
  color: var(--c);
}
.decade:nth-child(1) { --c: var(--d1950); }
.decade:nth-child(2) { --c: var(--d1960); }
.decade:nth-child(3) { --c: var(--d1970); }
.decade:nth-child(4) { --c: var(--d1980); }
.decade:nth-child(5) { --c: var(--d1990); }
.decade:nth-child(6) { --c: var(--d2000); }
.decade:nth-child(7) { --c: var(--d2010); }
.decade:nth-child(8) { --c: var(--d2020); }

.decade-body { display: grid; gap: 14px; align-content: start; max-width: 46rem; }
.decade-body p { color: var(--ink-soft); }
.decade-body strong { color: var(--ink); }

.photos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  margin-top: 6px;
}
.photos img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 14px;
}
.photos:empty {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 0 20px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--c) 9%, white);
  border: 2px dashed color-mix(in srgb, var(--c) 45%, white);
}
.photos:empty::before {
  content: "Photos coming soon";
  color: color-mix(in srgb, var(--c) 65%, var(--ink));
  font-weight: 700;
  font-size: 0.9375rem;
}

/* Stories */
.quotes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.quotes:empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  border-radius: 28px;
  background:
    radial-gradient(circle at 12% 20%, color-mix(in srgb, var(--teal) 22%, transparent) 0 70px, transparent 71px),
    radial-gradient(circle at 88% 78%, color-mix(in srgb, var(--yellow) 30%, transparent) 0 90px, transparent 91px),
    var(--sky);
}
.quotes:empty::before {
  content: "Stories from AIESECers abroad are on their way.";
  font-family: var(--display);
  font-weight: 650;
  font-size: clamp(1.125rem, 2.4vw, 1.5rem);
  color: var(--ink);
  text-align: center;
  padding: 0 24px;
}

.quote {
  margin: 0;
  padding: 28px;
  border-radius: 24px;
  background: var(--white);
  border: 2px solid color-mix(in srgb, var(--c, var(--blue)) 40%, white);
  display: grid;
  gap: 18px;
  align-content: start;
}
.quote img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }
.quote blockquote { margin: 0; font-size: 1.125rem; line-height: 1.55; }
.quote figcaption { display: grid; }
.quote figcaption span { color: var(--ink-soft); font-size: 0.9375rem; }

.quotes:empty:has(+ .exchange-photos) { display: none; }
.quotes:not(:empty) + .exchange-photos { margin-top: 32px; }
.exchange-photos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 720px) { .exchange-photos { grid-template-columns: repeat(2, 1fr); } }
.exchange-photos figure { position: relative; margin: 0; }
.exchange-photos img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 18px;
}
.exchange-photos figcaption {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--white);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.875rem;
}

/* Footer */
.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px var(--gutter) calc(56px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}
.footer img { height: 28px; width: auto; }
.footer .footer-badge { width: clamp(96px, 12vw, 140px); height: auto; border-radius: 50%; }
.footer-text { display: grid; gap: 14px; justify-items: start; }
.footer-thanks {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.375rem, 2.6vw, 1.875rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 18em;
}
.footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer nav a { font-weight: 700; text-decoration: none; }
.footer nav a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 960px) {
  .topbar-nav { display: none; }
  .topbar .btn-small { margin-left: auto; }
  .hero { grid-template-columns: 1fr; }
  .seventy { order: -1; max-width: 520px; }
  .seventy figcaption { text-align: left; }
  .give-inner { grid-template-columns: 1fr; }
  .dots { max-width: 460px; }
  .involved-grid { grid-template-columns: 1fr; }
  .footer { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .schedule::before { left: 5px; }
  .schedule li {
    grid-template-columns: 1fr;
    gap: 2px;
    padding: 14px 16px 14px 32px;
  }
  .schedule li::before { left: 0; top: 20px; }
  .schedule time { text-align: left; font-size: 1rem; }
  .schedule li.is-now h3::after { display: table; margin: 6px 0 0; }
  .decade { grid-template-columns: 1fr; gap: 12px; padding: 28px 0; }
  .hero-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .band, .confetti > * { animation: none; }
  .btn:active { transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .topbar { background: var(--white); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

.prelude-photos { max-width: 30rem; margin: -24px 0 48px; }
.photos img { aspect-ratio: 4 / 3; }