/* Pythagorae — brand: ink #14181F, cream #F2EFE6, bronze #B08D2F, space #101F42 -> #04091A */
:root {
  --bg: #060c1c;
  --bg-2: #0a1328;
  --card: rgba(16, 31, 66, .38);
  --fg: #f2efe6;
  --muted: #a6adbd;
  --faint: #6f7890;
  --rule: rgba(122, 143, 187, .16);
  --bronze: #c9a646;
  --bronze-2: #e8cf86;
  --blue: #7a8fbb;
  --sans: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --display: "Montserrat", var(--sans);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --serif: ui-serif, Georgia, "Iowan Old Style", Palatino, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; }
a { color: inherit; }
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- top bar ---------- */

.bar {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.bar.scrolled {
  background: rgba(6, 12, 28, .72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-color: var(--rule);
}
.bar-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand img { display: block; height: 22px; width: auto; }
.bar nav { display: flex; align-items: center; gap: 1.6rem; font-size: .9rem; }
.bar nav a { color: var(--muted); text-decoration: none; transition: color .15s ease; }
.bar nav a:hover { color: var(--fg); }
.bar nav .lang {
  font-family: var(--mono); font-size: .75rem; letter-spacing: .08em;
  border: 1px solid var(--rule); border-radius: 999px; padding: .25rem .7rem;
}
.bar nav .lang:hover { border-color: var(--bronze); color: var(--bronze-2); }

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

.hero {
  position: relative; min-height: min(100vh, 900px); min-height: min(100svh, 900px);
  display: flex; align-items: center;
  background: radial-gradient(120% 90% at 70% 35%, #13244d 0%, #0a1430 45%, var(--bg) 100%);
  overflow: hidden; isolation: isolate;
}
#sky { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.milky {
  position: absolute; inset: -20%; z-index: -1; pointer-events: none;
  background: linear-gradient(125deg, transparent 38%, rgba(122, 143, 187, .10) 48%, rgba(201, 166, 70, .05) 52%, transparent 62%);
  filter: blur(30px);
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 160px; z-index: -1;
  background: linear-gradient(to bottom, transparent, var(--bg));
}
.hero-in {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center;
  padding-top: 7rem; padding-bottom: 5rem; width: 100%;
}
.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--bronze); margin: 0 0 1.4rem;
}
h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2.5rem, 6.2vw, 4.6rem); line-height: 1.04; letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
}
.grad {
  background: linear-gradient(100deg, var(--fg) 0%, var(--bronze-2) 45%, var(--bronze) 70%, var(--blue) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 9s ease-in-out infinite alternate;
}
@keyframes shimmer { from { background-position: 0% 0; } to { background-position: 100% 0; } }
.lede { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--muted); max-width: 36rem; margin: 0 0 2.4rem; }

.ctas { display: flex; gap: .9rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-weight: 500; font-size: .98rem; text-decoration: none;
  padding: .85rem 1.4rem; border-radius: 10px;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn.primary {
  background: linear-gradient(180deg, var(--bronze-2), var(--bronze));
  color: #14181f;
  box-shadow: 0 8px 30px -8px rgba(201, 166, 70, .55), inset 0 1px 0 rgba(255, 255, 255, .35);
}
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(201, 166, 70, .7), inset 0 1px 0 rgba(255, 255, 255, .35); }
.btn.ghost { border: 1px solid var(--rule); color: var(--fg); background: rgba(255, 255, 255, .02); }
.btn.ghost:hover { border-color: var(--blue); background: rgba(122, 143, 187, .08); }
.btn.big { font-size: 1.1rem; padding: 1rem 1.8rem; }

/* tetractys constellation */
.hero-art { display: flex; justify-content: center; }
.tetractys { width: 100%; max-width: 440px; overflow: visible; animation: float 8s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-10px); } }
.edge {
  stroke: var(--blue); stroke-opacity: .45; stroke-width: 1.4;
  stroke-dasharray: 80;
  animation: draw 1.1s ease backwards; animation-delay: calc(var(--d) + .9s);
}
@keyframes draw { from { stroke-dashoffset: 80; } to { stroke-dashoffset: 0; } }
.node {
  fill: var(--fg); transform-box: fill-box; transform-origin: center;
  animation: pop .6s cubic-bezier(.2, 1.4, .4, 1) backwards, twinkle 4s ease-in-out infinite;
  animation-delay: var(--d), calc(var(--d) + 1s);
}
.node { filter: drop-shadow(0 0 6px rgba(226, 232, 245, .7)); }
.node.monad { fill: var(--bronze); filter: drop-shadow(0 0 9px rgba(232, 207, 134, .9)); }
@keyframes pop { from { opacity: 0; transform: scale(.2); } to { opacity: 1; transform: scale(1); } }
@keyframes twinkle { 0%, 100% { opacity: 1; } 50% { opacity: .65; } }

/* ---------- statement ---------- */

.statement { padding: 6rem 0 5rem; text-align: center; }
blockquote {
  font-family: var(--serif); font-size: clamp(1.6rem, 3.6vw, 2.5rem); line-height: 1.3;
  letter-spacing: -0.015em; max-width: 50rem; margin: 0 auto 4.5rem; text-wrap: balance;
}
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; text-align: left; }
.principle { border-top: 1px solid var(--rule); padding-top: 1.3rem; }
.principle h3 { font-family: var(--display); font-weight: 600; font-size: 1.05rem; margin: 0 0 .5rem; color: var(--bronze-2); }
.principle p { margin: 0; color: var(--muted); font-size: .95rem; }

/* ---------- sections ---------- */

.section { padding: 6rem 0; }
.section.alt { background: linear-gradient(180deg, var(--bg), var(--bg-2) 30%, var(--bg-2) 70%, var(--bg)); }
.section-head { margin-bottom: 3rem; }
.section-head h2, .contact h2 {
  font-family: var(--display); font-weight: 700; font-size: clamp(2rem, 4vw, 2.9rem);
  letter-spacing: -0.025em; line-height: 1.1; margin: 0 0 .6rem;
}
.section-head p { color: var(--muted); margin: 0; font-size: 1.1rem; }

/* capabilities grid */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.card {
  position: relative; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--rule); background: var(--card);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  --mx: 50%; --my: 50%;
}
.card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s ease;
  background: radial-gradient(520px circle at var(--mx) var(--my), rgba(201, 166, 70, .12), transparent 45%);
}
.card:hover { transform: translateY(-4px); border-color: rgba(201, 166, 70, .45); box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .8); }
.card:hover::after { opacity: 1; }
.card-art {
  height: 250px; border-bottom: 1px solid var(--rule);
  background: radial-gradient(90% 120% at 50% 0%, rgba(19, 36, 77, .95), rgba(6, 12, 28, .6));
}
.card-body { padding: 1.9rem 2rem 2.2rem; }
.card h3 {
  font-family: var(--display); font-weight: 700; font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .8rem; text-wrap: balance;
}
.card p { margin: 0; color: var(--muted); font-size: clamp(1.02rem, 1.3vw, 1.12rem); line-height: 1.6; }
.art { display: block; width: 100%; height: 100%; padding: .5rem; box-sizing: border-box; }

/* capability art */
.a-line { stroke: var(--blue); stroke-opacity: .28; stroke-width: 1; }
.a-dot { fill: var(--fg); fill-opacity: .85; }
.a-hot { fill: var(--bronze-2); filter: drop-shadow(0 0 5px rgba(232, 207, 134, .9)); }
.a-pulse { fill: var(--bronze-2); filter: drop-shadow(0 0 3px rgba(232, 207, 134, .9)); }
.a-best { fill: none; stroke: var(--bronze-2); stroke-width: 2.2; stroke-linecap: round; stroke-dasharray: 260; stroke-dashoffset: 260; animation: best 3.2s ease-in-out infinite; filter: drop-shadow(0 0 4px rgba(232, 207, 134, .8)); }
@keyframes best { 0% { stroke-dashoffset: 260; } 45%, 80% { stroke-dashoffset: 0; } 100% { stroke-dashoffset: -260; } }
.a-chip { fill: rgba(16, 31, 66, .9); stroke: var(--blue); stroke-opacity: .6; }
.a-die { fill: rgba(201, 166, 70, .18); stroke: var(--bronze-2); filter: drop-shadow(0 0 8px rgba(232, 207, 134, .6)); }
.a-label { fill: var(--bronze-2); font: 600 10px var(--mono); letter-spacing: .08em; }
.a-raw { fill: none; stroke: var(--blue); stroke-opacity: .75; stroke-width: 1.3; stroke-linejoin: round; }
.a-arrow { fill: none; stroke: var(--faint); stroke-width: 1.5; }
.a-axis { stroke: var(--rule); }
.a-bar { fill: var(--blue); fill-opacity: .7; }
.a-bar-hot { fill: var(--bronze-2); }
.a-grow { transform-box: fill-box; transform-origin: bottom; animation: grow 2.8s ease-in-out infinite alternate; animation-delay: var(--d); }
@keyframes grow { from { transform: scaleY(.35); } to { transform: scaleY(1); } }
.a-node { fill: rgba(122, 143, 187, .18); stroke: var(--blue); stroke-opacity: .5; animation: wave 3s ease-in-out infinite; animation-delay: var(--d); }
@keyframes wave { 0%, 60%, 100% { fill: rgba(122, 143, 187, .18); } 30% { fill: rgba(232, 207, 134, .85); } }
.a-breathe { animation: breathe 3s ease-in-out infinite; animation-delay: var(--d, 0s); }
@keyframes breathe { 50% { opacity: .55; } }
.a-planet { fill: #0d1c3f; stroke: var(--blue); stroke-opacity: .5; }
.a-orbit { fill: none; stroke: var(--blue); stroke-opacity: .35; stroke-dasharray: 3 5; }
.a-star { fill: var(--fg); fill-opacity: .6; }
.a-dish { fill: var(--fg); stroke: var(--fg); stroke-width: 1.5; }
.a-beam { stroke: var(--bronze-2); stroke-opacity: .5; stroke-dasharray: 2 4; animation: beam 1.2s linear infinite; }
@keyframes beam { to { stroke-dashoffset: -12; } }
.a-sat rect { fill: var(--fg); }
.a-sat .a-panel { fill: var(--bronze); }

/* team */
.team { display: flex; gap: 2.5rem; flex-wrap: wrap; }
.person { margin: 0; width: 15rem; }
.photo {
  width: 11rem; height: 11rem; border-radius: 50%; padding: 4px; margin-bottom: 1.2rem;
  background: conic-gradient(from 200deg, var(--bronze), var(--blue), transparent 70%, var(--bronze));
  transition: transform .3s ease;
}
.photo img { display: block; width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 3px solid var(--bg); }
.person:hover .photo { transform: rotate(-3deg) scale(1.04); }
.person strong { display: block; font-family: var(--display); font-weight: 600; font-size: 1.2rem; }
.person span { display: block; color: var(--muted); font-size: .95rem; margin-top: .25rem; }

/* contact */
.contact {
  padding: 7rem 0; text-align: center;
  background: radial-gradient(60% 80% at 50% 100%, rgba(19, 36, 77, .9), transparent 70%);
}
.contact p { color: var(--muted); font-size: 1.15rem; margin: 0 0 2.2rem; }

/* footer */
.foot { border-top: 1px solid var(--rule); padding: 2.2rem 0 2.6rem; }
.foot-in { display: flex; justify-content: space-between; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.social { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.4rem; flex-wrap: wrap; }
.social a { color: var(--muted); text-decoration: none; font-size: .92rem; transition: color .15s ease; }
.social a:hover { color: var(--bronze-2); }
.legal { margin: 0; font-family: var(--mono); font-size: .74rem; color: var(--faint); }

/* scroll reveal (only when JS is running) */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; transition-delay: calc(var(--i, 0) * 80ms); }
.js .reveal.in { opacity: 1; transform: none; }

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

@media (max-width: 900px) {
  .hero-in { grid-template-columns: 1fr; gap: 1rem; padding-top: 6rem; }
  .hero-art { order: -1; }
  .tetractys { max-width: 220px; }
  .grid { grid-template-columns: 1fr; }
  .card-art { height: 230px; }
  .principles { grid-template-columns: 1fr; gap: 1.4rem; }
}
@media (max-width: 600px) {
  .wrap { padding-left: 1rem; padding-right: 1rem; }
  .bar nav { gap: 1rem; font-size: .82rem; }
  .bar nav a:not(.lang):nth-child(n+2) { display: none; }
  .brand img { height: 16px; }
  .card-art { height: 200px; }
  .card-body { padding: 1.5rem 1.35rem 1.8rem; }
  .team { justify-content: center; }
  .person { text-align: center; }
  .photo { margin-left: auto; margin-right: auto; }
  .statement, .section { padding: 4rem 0; }
  .foot-in { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .edge { stroke-dashoffset: 0; }
  .node { opacity: 1; }
  .js .reveal { opacity: 1; transform: none; }
}