/* ============================================================
   m+labs — AI/ML research & technology
   Direction: the night sky is the lab. Deep space ink (not
   flat black), Space Grotesk display, JetBrains Mono utility
   (shared with marissatech.github.io), and one signature:
   a constellation that draws the m+labs X mark in stars.
   ============================================================ */

:root {
  --bg: #060410;              /* deep space ink, not flat black */
  --text: #f2f0f7;
  --muted: #9d98ad;
  --soft: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.22);
  --glow: rgba(215, 44, 240, 0.28);
  --accent: #d72cf0;
  --accent-2: #7b2cf0;
  --grad: linear-gradient(135deg, var(--accent), var(--accent-2));
  --display: "Space Grotesk", Inter, Helvetica, sans-serif;
  --body: Inter, Helvetica, sans-serif;
  --mono: "JetBrains Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--body);
  background:
    radial-gradient(ellipse at 20% -10%, rgba(123, 44, 240, 0.16), transparent 34rem),
    radial-gradient(ellipse at 85% 20%, rgba(215, 44, 240, 0.1), transparent 28rem),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: #fff;
}

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- night sky ---------- */

.night-sky {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 999px;
  background: #fff;
  opacity: 0.7;
  animation: twinkle 3s ease-in-out infinite;
}

/* depth: a few bigger, a few tinted — set from JS via .star.big / .star.tint */
.star.big {
  width: 3px;
  height: 3px;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
}

.star.tint {
  background: var(--accent);
  box-shadow: 0 0 6px var(--glow);
}

@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.35); }
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px max(28px, calc((100vw - 1100px) / 2 + 28px));
  background: rgba(6, 4, 16, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.logo-wrap { display: inline-flex; align-items: center; }

.logo {
  display: block;
  width: 150px;
  max-width: 44vw;
  height: auto;
}

nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
  font-size: 13px;
}

nav a {
  position: relative;
  padding: 8px 12px;
  color: var(--muted);
  transition: color 140ms ease;
}

/* tiny star that appears under the hovered link */
nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 3px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent);
  opacity: 0;
  transform: translateX(-50%);
  transition: opacity 140ms ease;
}

nav a:hover,
nav a:focus-visible {
  color: var(--text);
}

nav a:hover::after,
nav a:focus-visible::after {
  opacity: 1;
}

section { scroll-margin-top: 96px; }

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

main {
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 84px 28px 36px;
}

.hero {
  position: relative;
  min-height: 440px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(44px, 8.5vw, 92px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.045em;
}

/* the gradient lives on the idea, not the whole headline */
h1 .grad {
  background: linear-gradient(110deg, var(--accent) 10%, var(--accent-2) 60%, #b88bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.intro {
  max-width: 620px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid var(--border-strong);
  background: var(--soft);
  color: var(--text);
  font-family: var(--display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.button:hover {
  border-color: #fff;
  transform: translateY(-1px);
}

.button.primary {
  border-color: transparent;
  background: var(--grad);
}

.button.primary:hover {
  box-shadow: 0 0 28px var(--glow);
}

/* ---------- signature: the mark as a constellation ---------- */

.constellation {
  position: absolute;
  right: 0;
  top: 50%;
  width: 300px;
  height: 300px;
  transform: translateY(-50%);
  pointer-events: none;
  opacity: 0.9;
}

.constellation line {
  stroke: rgba(255, 255, 255, 0.3);
  stroke-width: 1;
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  animation: draw 2.2s ease-out 0.4s forwards;
}

@keyframes draw {
  to { stroke-dashoffset: 0; }
}

.constellation circle {
  fill: #fff;
  opacity: 1;
  filter: drop-shadow(0 0 3px rgba(255, 255, 255, 0.6));
}

.constellation .c-core {
  fill: var(--accent);
  filter: drop-shadow(0 0 6px var(--glow));
}

.constellation text {
  fill: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  opacity: 0.7;
}

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

.panel,
.card {
  border: 1px solid var(--border);
  background: rgba(10, 8, 20, 0.7);
  backdrop-filter: blur(12px);
}

.panel {
  padding: 30px;
  margin-bottom: 18px;
}

h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
}

/* a single star marks each section, echoing the sky */
h2::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--glow);
}

.panel p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.card {
  position: relative;
  min-height: 180px;
  padding: 24px;
  overflow: hidden;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: 0 0 36px var(--glow);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 26px;
  border: 1px solid var(--border);
  background: var(--soft);
  color: var(--accent);
  font-size: 18px;
  transition: border-color 150ms ease;
}

.card:hover .card-icon {
  border-color: var(--accent);
}

.card h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* ---------- links ---------- */

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.link-list a {
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--soft);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  transition: border-color 140ms ease, color 140ms ease;
}

.link-list a:hover {
  border-color: var(--accent);
  color: #fff;
}

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

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 24px 28px 44px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

/* ---------- mobile ---------- */

@media (max-width: 880px) {
  .constellation { display: none; }
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 16px 20px;
  }

  .logo { width: 130px; max-width: 60vw; }

  nav { flex-wrap: wrap; margin-left: -12px; }

  main { padding: 52px 20px 28px; }

  .hero { min-height: 360px; }

  .intro { font-size: 16px; }

  .grid { grid-template-columns: 1fr; }

  footer {
    flex-direction: column;
    gap: 6px;
    padding: 22px 20px 36px;
  }
}

/* ---------- accessibility ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .star { animation: none; opacity: 0.5; }

  .constellation line {
    animation: none;
    stroke-dashoffset: 0;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}