/* ==========================================================================
   Singapore Innovation Centre — design system
   Light, institutional, restrained. One stylesheet for every page.
   Edit tokens in :root to re-skin the whole site.
   ========================================================================== */

:root {
  /* Brand */
  --navy: #0f2f4c;
  --navy-deep: #092136;
  --navy-soft: #1d4a70;
  --accent: #0e7c66;
  --accent-dark: #0a5f4e;
  --accent-wash: #e8f2ef;

  /* Neutrals */
  --bg: #ffffff;
  --bg-alt: #f4f7f9;
  --bg-wash: #eef3f6;
  --text: #16222e;
  --muted: #5d6e7d;
  --line: #dfe5ea;
  --line-strong: #c8d2da;

  /* Shape */
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15, 47, 76, .04), 0 8px 24px rgba(15, 47, 76, .06);
  --shadow-lg: 0 2px 4px rgba(15, 47, 76, .05), 0 18px 44px rgba(15, 47, 76, .10);
  --container: 1180px;
  --header-h: 76px;
}

/* --------------------------------------------------------------- base --- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

h1, h2, h3, h4 {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.012em;
  color: var(--navy);
  margin: 0 0 16px;
}

h1 { font-size: clamp(2.15rem, 4.4vw, 3.35rem); line-height: 1.1; }
h2 { font-size: clamp(1.75rem, 3vw, 2.4rem); }
h3 { font-size: 1.22rem; line-height: 1.3; }
h4 { font-size: 1.02rem; }

p { margin: 0 0 18px; }
p:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------- structure --- */

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}
.container-narrow { max-width: 780px; }

.section { padding: 84px 0; }
.section-sm { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section-wash { background: var(--bg-wash); }

.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head.center { margin-inline: auto; text-align: center; }

.eyebrow {
  margin: 0 0 12px;
  font-family: Inter, sans-serif;
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}

.lede { font-size: 1.09rem; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: .88rem; }

/* --------------------------------------------------------------- grid --- */

.grid { display: grid; gap: 24px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }

/* ------------------------------------------------------------ buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: .94rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-deep); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-outline { border-color: var(--line-strong); color: var(--navy); background: #fff; }
.btn-outline:hover { border-color: var(--navy); }
.btn-ghost-light { border-color: rgba(255, 255, 255, .38); color: #fff; }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .12); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.textlink {
  font-family: Inter, sans-serif;
  font-size: .92rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.textlink::after { content: "→"; transition: transform .18s; }
.textlink:hover::after { transform: translateX(3px); }

/* ------------------------------------------------------------- header --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px;
  flex: none;
  border-radius: 9px;
  background: var(--navy);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: "IBM Plex Serif", serif;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .02em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-family: "IBM Plex Serif", serif;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--navy);
}
.brand-sub {
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav > a, .nav-trigger {
  padding: 9px 13px;
  border: 0;
  background: none;
  border-radius: var(--radius-sm);
  font-size: .92rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}
.nav > a:hover, .nav-trigger:hover { background: var(--bg-alt); color: var(--navy); }
.nav > a.is-active, .nav-item.is-active > .nav-trigger { color: var(--accent); font-weight: 600; }

.nav-item { position: relative; }
.nav-trigger::after { content: "▾"; margin-left: 6px; font-size: .7em; opacity: .6; }

.nav-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 250px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: none;
}
.nav-item:hover .nav-menu, .nav-menu.is-open { display: block; }
.nav-menu a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: .92rem;
}
.nav-menu a:hover { background: var(--bg-alt); color: var(--accent); }
.nav-menu span { display: block; font-size: .78rem; color: var(--muted); }

.header-cta { display: flex; align-items: center; gap: 10px; }
.header-cta .btn { min-height: 40px; padding: 0 16px; font-size: .88rem; }

.menu-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.menu-toggle span {
  display: block; width: 22px; height: 2px; margin: 5px 0;
  background: var(--navy); transition: .2s;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------- hero --- */

.hero {
  background: linear-gradient(168deg, var(--navy-deep) 0%, var(--navy) 58%, #16456d 100%);
  color: #fff;
  padding: 92px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -160px; top: -140px;
  width: 620px; height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 124, 102, .38), transparent 68%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { color: #fff; max-width: 15ch; }
.hero .eyebrow { color: #6fd8bd; }
.hero-lede { font-size: 1.12rem; color: rgba(255, 255, 255, .82); max-width: 56ch; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: center; }

.hero-facts {
  display: grid;
  gap: 2px;
  background: rgba(255, 255, 255, .16);
  border-radius: var(--radius);
  overflow: hidden;
}
.hero-fact { background: rgba(9, 33, 54, .55); padding: 22px 24px; }
.hero-fact strong {
  display: block;
  font-family: "IBM Plex Serif", serif;
  font-size: 2rem;
  line-height: 1.1;
  color: #fff;
}
.hero-fact span { font-size: .86rem; color: rgba(255, 255, 255, .72); }

/* page header for inner pages */
.page-header {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 52px;
}
.page-header h1 { max-width: 20ch; }
.page-header .lede { max-width: 62ch; }

.breadcrumb { font-size: .82rem; color: var(--muted); margin-bottom: 14px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 6px; opacity: .5; }

/* -------------------------------------------------------------- cards --- */

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.card > *:last-child { margin-bottom: 0; }
.card-link:hover { border-color: var(--line-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.card .textlink { margin-top: auto; padding-top: 18px; }

.card-icon {
  width: 42px; height: 42px;
  margin-bottom: 18px;
  border-radius: 10px;
  background: var(--accent-wash);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-size: 1.15rem;
}

.tag {
  display: inline-block;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--accent-wash);
  color: var(--accent-dark);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.tag-neutral { background: var(--bg-wash); color: var(--muted); }
.tag-live { background: #fdece9; color: #b23c1e; }

/* numbered list of capabilities */
.numbered { counter-reset: n; display: grid; gap: 0; }
.numbered > li {
  counter-increment: n;
  list-style: none;
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.numbered > li:last-child { border-bottom: 1px solid var(--line); }
.numbered > li::before {
  content: "0" counter(n);
  font-family: "IBM Plex Serif", serif;
  font-size: 1.35rem;
  color: var(--accent);
}
.numbered h3 { margin-bottom: 8px; }
.numbered p { color: var(--muted); }

/* ------------------------------------------------------------- events --- */

.event-list { display: grid; gap: 16px; }

.event {
  display: grid;
  grid-template-columns: 108px 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 24px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .18s, box-shadow .18s;
}
.event:hover { border-color: var(--line-strong); box-shadow: var(--shadow); }

.event-date {
  text-align: center;
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  border: 1px solid var(--line);
}
.event-date .m {
  display: block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}
.event-date .d {
  display: block;
  font-family: "IBM Plex Serif", serif;
  font-size: 1.85rem;
  line-height: 1.15;
  color: var(--navy);
}
.event-date .y { display: block; font-size: .74rem; color: var(--muted); }

.event-body h3 { margin-bottom: 6px; }
.event-body p { color: var(--muted); font-size: .95rem; margin: 0; }
.event-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.event-action { white-space: nowrap; }

.event.is-past { background: var(--bg-alt); }
.event.is-past .event-date { background: #fff; }

.empty-state {
  padding: 48px 28px;
  text-align: center;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--muted);
  background: var(--bg-alt);
}

.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: .88rem;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: .18s;
}
.filter-btn:hover { border-color: var(--line-strong); color: var(--navy); }
.filter-btn.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

/* ----------------------------------------------------------- timeline --- */

.timeline { display: grid; gap: 0; border-left: 2px solid var(--line); padding-left: 32px; }
.timeline-item { position: relative; padding-bottom: 38px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -40px; top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--accent);
}
.timeline-year {
  font-family: Inter, sans-serif;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 6px;
}
.timeline-item h3 { margin-bottom: 8px; }
.timeline-item p { color: var(--muted); }

/* -------------------------------------------------------- logos, team --- */

.logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.logo-cell {
  background: #fff;
  min-height: 116px;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  text-align: center;
}
.logo-cell strong { font-size: .92rem; color: var(--navy); line-height: 1.35; }
.logo-cell span { font-size: .76rem; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.logo-cell img { max-height: 46px; width: auto; margin: 0 auto; object-fit: contain; }

.person { text-align: left; }
.person-photo {
  aspect-ratio: 1;
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--bg-wash), var(--accent-wash));
  margin-bottom: 16px;
  overflow: hidden;
  display: grid;
  place-items: center;
  font-family: "IBM Plex Serif", serif;
  font-size: 2rem;
  color: var(--navy);
}
.person-photo img { width: 100%; height: 100%; object-fit: cover; }
.person h3 { margin-bottom: 2px; font-size: 1.05rem; }
.person-role { font-size: .86rem; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.person p { font-size: .92rem; color: var(--muted); }

/* ----------------------------------------------------------- cta band --- */

.cta-band {
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  padding: 52px 56px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 36px;
  align-items: center;
}
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: rgba(255, 255, 255, .78); margin: 0; max-width: 58ch; }
.cta-band .btn-row { margin-top: 0; }

.quote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 26px;
  font-family: "IBM Plex Serif", serif;
  font-size: 1.28rem;
  line-height: 1.55;
  color: var(--navy);
}
.quote cite {
  display: block;
  margin-top: 14px;
  font-family: Inter, sans-serif;
  font-size: .86rem;
  font-style: normal;
  color: var(--muted);
}

/* ------------------------------------------------------------- footer --- */

.site-footer {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, .72);
  padding: 64px 0 28px;
  font-size: .92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.site-footer h4 {
  font-family: Inter, sans-serif;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .5);
  margin-bottom: 16px;
}
.site-footer .brand-name, .site-footer .brand-sub { color: #fff; }
.site-footer .brand-sub { color: rgba(255, 255, 255, .55); }
.site-footer .brand-mark { background: rgba(255, 255, 255, .12); }
.footer-about { max-width: 40ch; margin-top: 18px; color: rgba(255, 255, 255, .62); }
.footer-links { display: grid; gap: 10px; }
.footer-links a:hover { color: #6fd8bd; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: .84rem;
  color: rgba(255, 255, 255, .48);
}

/* ------------------------------------------------------------ contact --- */

.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 30px;
}
.contact-item { padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-item:last-child { border-bottom: 0; }
.contact-label {
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.contact-value { font-weight: 500; color: var(--navy); }
.contact-value a:hover { color: var(--accent); }

/* -------------------------------------------------------- responsive --- */

@media (max-width: 1040px) {
  .nav { display: none; }
  .menu-toggle { display: block; }
  .header-cta .btn { display: none; }

  .nav.is-open {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 16px 24px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .nav.is-open > a, .nav.is-open .nav-trigger { padding: 12px 10px; text-align: left; width: 100%; }
  .nav.is-open .nav-menu {
    position: static;
    display: block;
    min-width: 0;
    margin: 0 0 6px 10px;
    padding: 0 0 0 12px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    box-shadow: none;
  }
  .nav.is-open .nav-trigger::after { display: none; }

  .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .logo-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .split, .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 760px) {
  .container { width: min(var(--container), calc(100% - 32px)); }
  .section { padding: 56px 0; }
  .hero { padding: 60px 0 64px; }
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .event { grid-template-columns: 76px 1fr; gap: 18px; }
  .event-action { grid-column: 1 / -1; }
  .event-action .btn { width: 100%; }
  .event-date .d { font-size: 1.5rem; }

  .cta-band { grid-template-columns: 1fr; padding: 36px 28px; }
  .numbered > li { grid-template-columns: 44px 1fr; gap: 14px; }
  .hero-fact { padding: 18px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}