/* ============ TOKENS ============ */
:root {
  --white: #FFFFFF;
  --black: #000000;
  --ink:   #333333;
  --ink-2: #666666;
  --bg-soft: #F9F9F9;
  --bg-soft-2: #F4F4F4;
  --line: #E5E5E5;
  --line-2: #C1C1C1;

  --violet:    #2B1B3D;
  --aubergine: #3D233F;
  --mulberry:  #4A3B4C;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 2px 8px rgba(0,0,0,.04);
  --shadow-md: 0 6px 18px rgba(43,27,61,.08), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg: 0 24px 60px rgba(43,27,61,.18);

  --ease: cubic-bezier(.22,.61,.36,1);
  --t: 320ms;
}

/* ============ BASE ============ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--white);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  color: var(--black);
  letter-spacing: -0.02em;
  margin: 0 0 .4em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1.05; font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.15; font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p  { margin: 0 0 1em; color: var(--ink); }
a  { color: inherit; text-decoration: none; }

.eyebrow {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--violet);
  font-weight: 600;
  margin-bottom: .9rem;
}

.section__head { max-width: 720px; margin: 0 auto 2.5rem; text-align: center; padding: 0 1.5rem; }

/* ============ NAV ============ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 1.5rem;
}
.nav__brand {
  display: flex; align-items: center; gap: .6rem;
  font-family: 'Space Grotesk'; font-weight: 700; color: var(--black);
}
.nav__mark {
  width: 18px; height: 18px;
  background: linear-gradient(135deg, var(--violet) 0%, var(--aubergine) 60%, var(--mulberry) 100%);
  border-radius: 4px;
}
.nav__links { display: flex; gap: 1.6rem; }
.nav__links a {
  font-size: .9rem; font-weight: 500; color: var(--ink-2);
  position: relative; padding: .25rem 0;
  transition: color var(--t) var(--ease);
}
.nav__links a:hover { color: var(--black); }
.nav__links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--violet); transform: scaleX(0); transform-origin: left;
  transition: transform var(--t) var(--ease);
}
.nav__links a:hover::after { transform: scaleX(1); }

@media (max-width: 600px) { .nav__links { display: none; } }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 1.4rem; border-radius: 999px;
  font-weight: 600; font-size: .95rem;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease), color var(--t) var(--ease);
  cursor: pointer; border: 1px solid transparent;
}
.btn--primary {
  background: var(--violet); color: var(--white);
  box-shadow: 0 8px 20px rgba(43,27,61,.25);
}
.btn--primary:hover { transform: translateY(-2px); background: var(--aubergine); box-shadow: 0 12px 28px rgba(61,35,63,.32); }
.btn--ghost {
  background: transparent; color: var(--black); border-color: var(--line-2);
}
.btn--ghost:hover { background: var(--bg-soft-2); transform: translateY(-2px); }

/* ============ HERO ============ */
.hero {
  max-width: 1200px; margin: 0 auto;
  padding: clamp(2rem, 6vw, 5rem) 1.5rem;
}
.hero__grid {
  display: grid; gap: 3rem;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}
@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.hero__copy .lede {
  font-size: 1.1rem; color: var(--ink-2); max-width: 38ch;
}
.hero__cta { display: flex; gap: .8rem; margin-top: 1.6rem; flex-wrap: wrap; }

/* ---------- TRIANGLE ---------- */
.hero__triangle {
  position: relative;
  width: 100%;
  aspect-ratio: 600 / 560;
  max-width: 600px;
  margin: 0 auto;
}
.triangle-svg { width: 100%; height: 100%; display: block; overflow: visible; }

.triangle-shape {
  stroke-dasharray: 1500;
  stroke-dashoffset: 1500;
  animation: draw 1.6s var(--ease) .2s forwards;
}
.connector {
  stroke: var(--line-2);
  stroke-width: 1;
  stroke-dasharray: 4 6;
  opacity: 0;
  animation: fadeIn .9s var(--ease) 1.2s forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fadeIn { to { opacity: .9; } }

/* nodes */
.node {
  position: absolute;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 150px; height: 150px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  font-family: 'Space Grotesk';
  text-align: center;
  padding: .8rem;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
  opacity: 0;
  animation: pop .6s var(--ease) forwards;
}
.node:hover {
  transform: translate(-50%, -50%) scale(1.06) !important;
  box-shadow: var(--shadow-lg);
  border-color: var(--violet);
}
.node.is-active {
  background: var(--violet); color: var(--white); border-color: var(--violet);
}
.node.is-active .node__num { color: rgba(255,255,255,.7); }

.node__num {
  font-size: .7rem; font-weight: 600; letter-spacing: .15em;
  color: var(--ink-2); margin-bottom: .35rem;
}
.node__label {
  font-size: .82rem; font-weight: 600; line-height: 1.25; color: inherit;
}

/* triangle vertex positions — translate centers them */
.node--top    { top:  10.7%; left: 50%;   transform: translate(-50%, -50%); animation-delay: 1.4s; }
.node--left   { top:  89.3%; left: 10%;   transform: translate(-50%, -50%); animation-delay: 1.55s; }
.node--right  { top:  89.3%; left: 90%;   transform: translate(-50%, -50%); animation-delay: 1.7s; }
.node--center {
  top: 64.3%; left: 50%; transform: translate(-50%, -50%);
  width: 130px; height: 130px;
  background: linear-gradient(135deg, var(--violet), var(--aubergine));
  color: var(--white); border-color: transparent;
  animation-delay: 1.85s;
}
.node--center .node__num { color: rgba(255,255,255,.7); }
.node--center:hover { border-color: var(--mulberry); }

@keyframes pop {
  from { opacity: 0; transform: translate(-50%, -50%) scale(.6); }
  to   { opacity: 1; }
}

@media (max-width: 520px) {
  .node { width: 110px; height: 110px; }
  .node--center { width: 96px; height: 96px; }
  .node__label { font-size: .72rem; }
}

/* ============ PILLAR CARDS ============ */
.pillars { padding: 5rem 1.5rem; background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pillar-cards {
  max-width: 1200px; margin: 0 auto;
  display: grid; gap: 1.2rem;
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 960px) { .pillar-cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .pillar-cards { grid-template-columns: 1fr; } }

.pillar-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  overflow: hidden;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
}
.pillar-card::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 500ms var(--ease);
}
.pillar-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.pillar-card:hover::before { transform: scaleX(1); }

.pillar-card__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.pillar-card__num {
  font-family: 'Space Grotesk'; font-size: 1.1rem; font-weight: 700; color: var(--accent);
  letter-spacing: .04em;
}
.pillar-card__count {
  font-size: .75rem; font-weight: 600; color: var(--ink-2);
  background: var(--bg-soft-2); padding: .25rem .6rem; border-radius: 999px;
}
.pillar-card h3 { color: var(--black); margin-bottom: .5rem; }
.pillar-card p { font-size: .9rem; color: var(--ink-2); margin-bottom: 1.2rem; }

.pillar-card__filter {
  background: transparent; border: none; padding: 0;
  font-family: inherit; font-size: .88rem; font-weight: 600;
  color: var(--accent); cursor: pointer;
  transition: gap var(--t) var(--ease), letter-spacing var(--t) var(--ease);
}
.pillar-card__filter:hover { letter-spacing: .02em; }

.pillar-card--sub { background: linear-gradient(180deg, var(--white) 0%, #FBFAFC 100%); }

/* ============ PROJECTS ============ */
.projects { padding: 5rem 1.5rem; max-width: 1200px; margin: 0 auto; }

.filter-bar {
  display: flex; flex-wrap: wrap; gap: .5rem;
  justify-content: center; margin-bottom: 2.5rem;
}
.chip {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem 1rem; border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--white); color: var(--ink);
  font: 500 .88rem 'Inter', sans-serif; cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.chip:hover { background: var(--bg-soft-2); transform: translateY(-1px); }
.chip.is-active {
  background: var(--violet); color: var(--white); border-color: var(--violet);
}
.chip__dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.chip.is-active .chip__dot { box-shadow: 0 0 0 2px rgba(255,255,255,.4); }

.project-grid {
  display: grid; gap: 1.2rem;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 900px) { .project-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .project-grid { grid-template-columns: 1fr; } }

.project {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.2rem;
  display: flex; flex-direction: column;
  cursor: pointer;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
  animation: rise .45s var(--ease) both;
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.project.is-hidden { display: none; }
.project:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--line-2); }

.project__tags {
  display: flex; align-items: center; flex-wrap: wrap; gap: .4rem;
  margin-bottom: 1rem;
}
.project__tag {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .7rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  padding: .3rem .65rem; border-radius: 999px;
  background: var(--bg-soft-2); color: var(--ink);
}
.project__source-pillar {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .68rem; font-weight: 500; color: var(--ink-2);
  padding: .28rem .6rem; border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--white);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 220px;
}
.project__tag-dot { width: 7px; height: 7px; border-radius: 50%; }

.project__title { color: var(--black); font-size: 1.08rem; margin-bottom: .35rem; }
.project__desc { font-size: .9rem; color: var(--ink-2); flex: 1; margin-bottom: 1rem; }

.project__timeline-short {
  font-size: .75rem; color: var(--ink-2); font-weight: 500;
}
.project__meta {
  display: flex; justify-content: space-between; align-items: center;
  font-size: .78rem; color: var(--ink-2);
  border-top: 1px solid var(--line); padding-top: .8rem;
}
.project__status {
  display: inline-flex; align-items: center; gap: .35rem;
  font-weight: 600;
}
.project__status::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--mulberry);
}
.project__status[data-status="live"]::before      { background: #1f9d55; }
.project__status[data-status="build"]::before     { background: #d97706; }
.project__status[data-status="discovery"]::before { background: var(--line-2); }

.project__demand {
  display: inline-flex; align-items: center;
  font-size: .65rem; font-weight: 600; letter-spacing: .04em;
  padding: .22rem .55rem; border-radius: 999px; white-space: nowrap;
}
.project__demand[data-demand="Yes"] {
  background: #ecfdf5; color: #1a7a43; border: 1px solid #bbf7d0;
}
.project__demand[data-demand="No"] {
  background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca;
}

/* ── Modal: Data Demand panel ── */
.demand-block {
  display: flex; flex-direction: column; gap: .6rem;
}
.demand-badge {
  display: inline-flex; align-items: center;
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  padding: .28rem .75rem; border-radius: 999px; width: fit-content;
}
.demand-badge[data-demand="Yes"] {
  background: #ecfdf5; color: #1a7a43; border: 1px solid #bbf7d0;
}
.demand-badge[data-demand="No"] {
  background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca;
}
.demand-rationale {
  font-size: .82rem; line-height: 1.6; color: var(--ink-2); margin: 0;
}

.empty-state { text-align: center; color: var(--ink-2); padding: 3rem; }

/* ============ ABOUT ============ */
.about {
  background: var(--violet);
  color: var(--white);
  padding: 5rem 1.5rem;
}
.about__inner { max-width: 760px; margin: 0 auto; text-align: center; }
.about h2 { color: var(--white); }
.about p { color: rgba(255,255,255,.78); font-size: 1.05rem; }
.about .eyebrow { color: rgba(255,255,255,.55); }
.about strong { color: var(--white); }

/* ============ FOOTER ============ */
.footer {
  background: var(--black); color: rgba(255,255,255,.6);
  padding: 1.5rem;
  font-size: .85rem;
}
.footer__inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ============ PROJECT CARD HINT ============ */
.project__expand-hint {
  margin-top: .8rem;
  font-size: .75rem; font-weight: 600; letter-spacing: .04em;
  color: var(--violet);
  opacity: 0; transform: translateX(-4px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}
.project:hover .project__expand-hint,
.project:focus-visible .project__expand-hint { opacity: 1; transform: none; }
.project:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; }

/* ============ MODAL ============ */
.modal {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  visibility: hidden; opacity: 0;
  transition: opacity var(--t) var(--ease), visibility var(--t);
}
.modal.is-open { visibility: visible; opacity: 1; }

.modal__backdrop {
  position: absolute; inset: 0;
  background: rgba(20, 12, 28, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal__panel {
  position: relative;
  width: min(880px, 100%);
  max-height: 88vh;
  overflow: auto;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(.98);
  transition: transform 380ms var(--ease);
}
.modal.is-open .modal__panel { transform: none; }

.modal__close {
  position: absolute; top: .8rem; right: .8rem;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--white); border: 1px solid var(--line);
  color: var(--ink); font-size: 1.4rem; line-height: 1;
  cursor: pointer; z-index: 2;
  transition: background var(--t) var(--ease), transform var(--t) var(--ease);
}
.modal__close:hover { background: var(--bg-soft-2); transform: rotate(90deg); }

.modal__body { padding: 0; }

.modal__head {
  padding: 2rem 2rem 1.5rem;
  background: linear-gradient(180deg, #FBFAFC 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.modal__head::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--accent);
}
.modal__badges {
  display: flex; align-items: center; flex-wrap: wrap; gap: .45rem;
  margin-bottom: .8rem;
}
.modal__pillar {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: .72rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink); margin-bottom: .8rem;
}
.modal__title {
  font-family: 'Space Grotesk'; font-size: 1.7rem; font-weight: 700;
  color: var(--black); margin: 0 0 .4rem;
  letter-spacing: -0.02em;
}
.modal__desc { color: var(--ink-2); margin: 0 0 1.2rem; max-width: 64ch; }

.modal__chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.mchip {
  display: inline-flex; align-items: center; gap: .45rem;
  background: var(--white); border: 1px solid var(--line);
  border-radius: 999px; padding: .35rem .8rem;
  font-size: .82rem; color: var(--ink);
}
.mchip strong {
  font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-2); margin-right: .25rem;
}

.modal__grid {
  display: grid; gap: 1rem;
  grid-template-columns: 1fr 1fr;
  padding: 1.5rem 2rem 2rem;
}
.panel--wide { grid-column: 1 / -1; }
@media (max-width: 640px) {
  .modal__grid { grid-template-columns: 1fr; padding: 1.25rem; }
  .modal__head { padding: 1.5rem 1.25rem 1.25rem; }
  .modal__title { font-size: 1.35rem; }
}

.panel {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
}
.panel h4 {
  font-family: 'Space Grotesk'; font-size: .78rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-2); margin: 0 0 .9rem;
}

/* ---- Effort meter ---- */
.effort__bar { display: flex; gap: .35rem; margin-bottom: .65rem; }
.effort__pip {
  flex: 1; height: 8px; border-radius: 4px;
  background: var(--line);
  transition: background 320ms var(--ease);
}
.effort__pip.is-on { background: var(--violet); }
.effort__label { font-size: .9rem; color: var(--black); font-weight: 600; }

/* ---- Timeline track ---- */
.tl-track { margin-bottom: 1.2rem; }
.tl-bar {
  height: 8px; border-radius: 4px;
  background: var(--line); overflow: hidden; margin-bottom: .5rem;
}
.tl-bar__fill {
  height: 100%; border-radius: 4px;
  background: var(--line-2); width: 0;
  transition: width .6s var(--ease);
}
.tl-bar__fill[data-status="build"]     { background: #d97706; width: 50%; }
.tl-bar__fill[data-status="live"]      { background: #1f9d55; width: 100%; }
.tl-bar__fill[data-status="discovery"] { background: var(--line-2); width: 8%; }
.tl-ends {
  display: flex; justify-content: space-between;
  font-size: .75rem; color: var(--ink-2); font-weight: 500;
}
.ms-empty { font-size: .88rem; color: var(--ink-2); font-style: italic; margin: 0; }

/* ---- Milestones ---- */
.ms-list { list-style: none; padding: 0; margin: 0; position: relative; }
.ms-list::before {
  content: ''; position: absolute; left: 5px; top: 8px; bottom: 8px;
  width: 2px; background: var(--line);
}
.ms { display: flex; gap: .8rem; padding: .35rem 0; position: relative; }
.ms__dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--violet); margin-top: 5px;
  box-shadow: 0 0 0 3px var(--bg-soft);
  flex-shrink: 0;
}
.ms__when {
  font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-2);
}
.ms__label { font-size: .92rem; color: var(--black); }

/* ---- Team ---- */
.members {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: .7rem;
}
.member {
  display: flex; align-items: center; gap: .7rem;
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .6rem .75rem;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}
.member:hover { transform: translateY(-2px); border-color: var(--line-2); }
.avatar {
  width: 36px; height: 36px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--white); font: 600 .78rem 'Space Grotesk';
  letter-spacing: .03em; flex-shrink: 0;
}
.member__name { font-size: .9rem; font-weight: 600; color: var(--black); line-height: 1.1; }
.member__role { font-size: .76rem; color: var(--ink-2); margin-top: 2px; }