:root {
  --bg: #000000;
  --bg-2: #0c0c0e;
  --surface: rgba(255, 255, 255, 0.03);
  --line: rgba(255, 255, 255, 0.1);
  --grey: #a3a3a3;
  --text: #e9edf3;
  --muted: #9a9a9f;
  --amber: #f5a524;
  --amber-soft: rgba(245, 165, 36, 0.14);
  --cyan: #2790ad;
  --cyan-hi: #3aa9c8;
  --cyan-soft: rgba(39, 144, 173, 0.14);
  --radius: 16px;
  --max: 1200px;
  --display: "Michroma", "Inter", sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--display); font-weight: 400; line-height: 1.2; margin: 0; letter-spacing: 0.01em; }
p { margin: 0; }
.accent { color: var(--cyan-hi); }

.grid-bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(39, 144, 173, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(39, 144, 173, 0.22) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 70% 15%, #000 0%, transparent 60%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 15%, #000 0%, transparent 60%);
  opacity: 0.4;
}

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.85rem 1.5rem; border-radius: 999px; border: 0; cursor: pointer;
  font: 500 0.9rem/1 var(--body); letter-spacing: 0.02em;
  transition: background 0.25s, border-color 0.25s, color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.btn--primary { background: var(--amber); color: #1a1204; }
.btn--primary:hover { background: #ffb840; transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(245, 165, 36, 0.6); }
.btn--ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
.btn--ghost:hover { border-color: var(--cyan-hi); color: var(--cyan-hi); }

/* nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem clamp(16px, 4vw, 48px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
.nav.is-scrolled { background: rgba(0, 0, 0, 0.8); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-color: var(--line); }
.nav__brand { display: flex; align-items: center; gap: 0.75rem; }
.nav__brand img:first-child { height: 32px; width: auto; }
.nav__word { height: 16px; width: auto; }
.nav__links { display: flex; align-items: center; gap: 1.8rem; font-size: 0.88rem; }
.nav__links a:not(.btn) { color: var(--muted); transition: color 0.2s; }
.nav__links a:not(.btn):hover { color: var(--text); }
.nav__links .btn { padding: 0.6rem 1.2rem; }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 6px 0; transition: transform 0.3s; }

/* hero */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  max-width: var(--max); margin: 0 auto;
  padding: 8rem clamp(16px, 4vw, 48px) 5rem;
  display: grid; grid-template-columns: 1.15fr 0.85fr; align-items: center; gap: 3rem;
}
.status {
  display: inline-flex; align-items: center; gap: 0.6rem; margin-bottom: 1.6rem;
  padding: 0.4rem 0.9rem; border-radius: 999px; border: 1px solid rgba(245, 165, 36, 0.4);
  background: var(--amber-soft); color: var(--amber); font-size: 0.78rem; letter-spacing: 0.06em;
}
.status__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); animation: blink 1.8s ease-in-out infinite; }
.hero h1 { font-size: clamp(1.9rem, 4vw, 3.2rem); margin-bottom: 1.6rem; }
.lead { font-size: clamp(1rem, 1.25vw, 1.1rem); color: var(--muted); max-width: 36rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; margin: 2.4rem 0 3rem; }
.hero__motto { width: min(400px, 100%); height: auto; opacity: 0.8; }

.hero__visual { position: relative; display: grid; place-items: center; aspect-ratio: 260 / 440; max-height: 74vh; justify-self: center; width: 100%; max-width: 340px; }
.halo { position: absolute; inset: 15% -25%; background: radial-gradient(circle, rgba(245, 165, 36, 0.12) 0%, rgba(39, 144, 173, 0.28) 30%, transparent 65%); filter: blur(20px); animation: pulse 6s ease-in-out infinite; }
.exo { position: relative; width: 100%; height: 100%; overflow: visible; }
.exo__belt { fill: var(--cyan-soft); stroke: var(--cyan); stroke-width: 2; }
.exo__link { fill: rgba(163, 163, 163, 0.16); stroke: var(--grey); stroke-width: 2; stroke-linejoin: round; }
.exo__strap { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-dasharray: 4 4; }
.exo__joint { fill: var(--bg-2); stroke: var(--grey); stroke-width: 2; }
.exo__gear { fill: var(--bg-2); stroke: var(--amber); stroke-width: 3; filter: drop-shadow(0 0 10px rgba(245, 165, 36, 0.55)); }
.exo__core { fill: var(--amber); }
.exo__thigh { transform-box: view-box; transform-origin: 110px 60px; animation: thigh 3.2s ease-in-out infinite; }
.exo__shank { transform-box: view-box; transform-origin: 122px 236px; animation: shank 3.2s ease-in-out infinite; }
.exo__signal path { stroke: var(--cyan); stroke-width: 2; fill: none; stroke-dasharray: 360; stroke-dashoffset: 360; animation: trace 3.2s linear infinite; }

@keyframes thigh { 0%, 100% { transform: rotate(-12deg); } 50% { transform: rotate(14deg); } }
@keyframes shank { 0%, 100% { transform: rotate(4deg); } 25% { transform: rotate(30deg); } 50% { transform: rotate(6deg); } 75% { transform: rotate(10deg); } }
@keyframes trace { to { stroke-dashoffset: -360; } }
@keyframes pulse { 0%, 100% { opacity: 0.7; transform: scale(1); } 50% { opacity: 1; transform: scale(1.08); } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.scroll-cue { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); width: 24px; height: 40px; border: 1px solid var(--line); border-radius: 12px; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 3px; height: 8px; margin-left: -1.5px; border-radius: 2px; background: var(--cyan); animation: cue 2s ease-in-out infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* sections */
.section { max-width: var(--max); margin: 0 auto; padding: clamp(4.5rem, 9vw, 7rem) clamp(16px, 4vw, 48px); }
.section--tight { padding-top: 2rem; padding-bottom: 2rem; }
.section__head { margin-bottom: 3rem; }
.eyebrow { font-family: var(--display); font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--cyan-hi); margin-bottom: 1.2rem; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.4rem); margin-bottom: 1.2rem; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.card { padding: 2rem; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); transition: border-color 0.3s, transform 0.3s; }
.card:hover { border-color: rgba(39, 144, 173, 0.6); transform: translateY(-4px); }
.card svg, .why svg { width: 40px; height: 40px; fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 1.4rem; }
.card h3 { font-size: 0.95rem; margin-bottom: 0.7rem; }
.card p { color: var(--muted); font-size: 0.95rem; }

/* built in india / why */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.checks { list-style: none; margin: 1.6rem 0 0; padding: 0; display: grid; gap: 1rem; }
.checks li { position: relative; padding-left: 2rem; color: var(--muted); }
.checks li::before { content: ""; position: absolute; left: 0; top: 0.45em; width: 14px; height: 8px; border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg); }
.why { display: grid; gap: 1rem; }
.why__item { display: flex; gap: 1.2rem; padding: 1.4rem 1.6rem; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.why__item span { font-family: var(--display); font-size: 0.75rem; color: var(--cyan-hi); padding-top: 0.15rem; }
.why__item h3 { font-size: 0.9rem; margin-bottom: 0.4rem; }
.why__item p { color: var(--muted); font-size: 0.93rem; }

/* waitlist + contact */
.cta { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 1.25rem; }
.cta__panel { padding: clamp(2rem, 4vw, 3rem); border-radius: 24px; border: 1px solid var(--line); background: radial-gradient(circle at 0% 0%, rgba(39, 144, 173, 0.22), transparent 55%), var(--bg-2); }
.cta__panel--alt { background: var(--surface); display: flex; flex-direction: column; }
.cta__panel--alt .btn { align-self: flex-start; margin-top: auto; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2rem; }
.form label { display: grid; gap: 0.4rem; font-size: 0.8rem; color: var(--muted); }
.form label:nth-of-type(3) { grid-column: 1 / -1; }
.form input, .form select {
  width: 100%; padding: 0.8rem 1rem; border-radius: 10px; border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25); color: var(--text); font: 400 0.95rem var(--body);
}
.form select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
.form input:focus, .form select:focus { outline: none; border-color: var(--cyan); }
.form .btn { justify-self: start; }
.form__msg { grid-column: 1 / -1; font-size: 0.88rem; color: var(--amber); min-height: 1.3em; }
.contact { margin: 2rem 0; display: grid; gap: 1.2rem; }
.contact div { margin: 0; }
.contact dt { font-family: var(--display); font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.3rem; }
.contact dd { margin: 0; }
.contact a { border-bottom: 1px solid var(--cyan); }
.contact a:hover { color: var(--cyan-hi); }

/* footer */
.footer { max-width: var(--max); margin: 0 auto; padding: 3rem clamp(16px, 4vw, 48px) 4rem; display: flex; align-items: center; justify-content: space-between; gap: 2.5rem; border-top: 1px solid var(--line); }
.footer img { width: 210px; height: auto; flex: none; }
.footer p { color: var(--muted); font-size: 0.82rem; max-width: 40rem; }
.footer p + p { margin-top: 0.5rem; }

/* reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* responsive */
@media (max-width: 1000px) {
  .nav__links { gap: 1.2rem; }
}
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 7rem; }
  .hero__visual { order: -1; max-width: 200px; max-height: 38vh; }
  .scroll-cue { display: none; }
  .cards { grid-template-columns: 1fr; }
  .split, .cta { grid-template-columns: 1fr; }
  .split { gap: 3rem; }
}
@media (max-width: 860px) {
  .nav__toggle { display: block; position: relative; z-index: 2; }
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 2rem;
    background: rgba(0, 0, 0, 0.97); font-size: 1.15rem;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
  }
  .nav.is-open .nav__links { opacity: 1; pointer-events: auto; }
  .nav.is-open .nav__toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav.is-open .nav__toggle span:last-child { transform: translateY(-4px) rotate(-45deg); }
}
@media (max-width: 640px) {
  .form { grid-template-columns: 1fr; }
  .footer { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}