/* ============================================================
   Optane — Operations Consulting, Trivandrum
   ============================================================ */

:root {
  --bg: #0A0A0A;
  --bg-soft: #101312;
  --surface: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.09);
  --ink: #F4F5F3;
  --ink-dim: #9AA0A0;
  --ink-faint: #5C6362;
  --teal: #17C3B2;
  --teal-deep: #0E6B6B;
  --teal-glow: rgba(23, 195, 178, 0.35);

  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-display: 'Syne', var(--font-body);

  --pad: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1280px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.05vw, 1.125rem);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}

@media (max-width: 900px) { body { cursor: auto; } }

a { color: inherit; text-decoration: none; }
::selection { background: var(--teal); color: #04110F; }

/* ---------- Background canvas ---------- */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

main, .nav, .footer { position: relative; z-index: 2; }

/* ---------- Custom cursor ---------- */
.cursor, .cursor-dot {
  position: fixed;
  top: 0; left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  transform: translate(-50%, -50%);
  will-change: transform;
}
.cursor {
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,0.5);
  transition: width .3s var(--ease), height .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
}
.cursor-dot { width: 5px; height: 5px; background: var(--ink); }
.cursor.is-hover { width: 64px; height: 64px; background: var(--teal); border-color: transparent; }
@media (max-width: 900px), (pointer: coarse) { .cursor, .cursor-dot { display: none; } }

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg);
  display: grid; place-items: center;
}
.loader__inner { text-align: center; width: min(240px, 60vw); }
.loader__mark {
  display: block;
  width: 48px; height: 48px;
  margin: 0 auto 1.5rem;
  color: var(--ink);
  animation: loaderSpin 1.4s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
@keyframes loaderSpin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .loader__mark { animation: none; } }
.loader__bar { height: 2px; width: 100%; background: var(--border); overflow: hidden; }
.loader__bar span { display: block; height: 100%; width: 0; background: var(--teal); }
.loader.is-done { pointer-events: none; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.35rem var(--pad);
  z-index: 100;
  transition: padding .4s var(--ease), background .4s var(--ease), backdrop-filter .4s var(--ease);
}
.nav.is-scrolled {
  padding-top: .85rem; padding-bottom: .85rem;
  background: rgba(10,10,10,0.6);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav__brand {
  font-family: var(--font-display);
  font-weight: 800; font-size: 1.25rem; letter-spacing: .12em;
  display: inline-flex; align-items: center;
}
.nav__brand span { color: var(--teal); }
.nav__logo { height: 30px; width: auto; display: block; }
.nav.is-scrolled .nav__logo { height: 26px; transition: height .4s var(--ease); }
.nav__links { display: flex; align-items: center; gap: 2rem; font-size: .9rem; }
.nav__links a { color: var(--ink-dim); transition: color .25s; position: relative; }
.nav__links a:hover { color: var(--ink); }
.nav__cta {
  border: 1px solid var(--teal);
  color: var(--teal) !important;
  padding: .5rem 1.1rem; border-radius: 100px;
  transition: background .3s, color .3s !important;
}
.nav__cta:hover { background: var(--teal); color: #04110F !important; }
.nav__toggle { display: none; background: none; border: 0; flex-direction: column; gap: 6px; cursor: pointer; }
.nav__toggle span { width: 26px; height: 2px; background: var(--ink); transition: transform .3s, opacity .3s; }

@media (max-width: 760px) {
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center;
    background: rgba(10,10,10,0.97); backdrop-filter: blur(20px);
    gap: 2rem; font-size: 1.4rem; transform: translateY(-100%);
    transition: transform .55s var(--ease); pointer-events: none;
  }
  .nav.is-open .nav__links { transform: translateY(0); pointer-events: auto; }
  .nav__links a { color: var(--ink); }
  .nav__toggle { display: flex; z-index: 101; }
  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
}

/* ---------- Layout / sections ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(5rem, 12vh, 9rem) var(--pad);
}
.section__head {
  display: flex; align-items: baseline; gap: 1.25rem;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}
.section__index {
  font-family: var(--font-display);
  color: var(--teal); font-size: .95rem; font-weight: 700; letter-spacing: .1em;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1;
  letter-spacing: -0.02em;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--pad);
}
.hero__eyebrow {
  text-transform: uppercase; letter-spacing: .35em; font-size: .72rem;
  color: var(--teal); margin-bottom: 1.75rem;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 12vw, 9.5rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}
.hero__title .line { display: block; overflow: hidden; }
.hero__subtitle {
  margin-top: 1rem;
  font-weight: 400;
  font-size: clamp(.95rem, 2vw, 1.4rem);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.hero__tagline {
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 500;
  margin-top: 2rem;
  max-width: 22ch;
  color: var(--ink);
}
.hero__sub {
  margin-top: 1.25rem; color: var(--ink-dim);
  font-size: clamp(.85rem, 1.4vw, 1rem);
  letter-spacing: .02em;
}
.hero__cta { display: flex; gap: 1rem; margin-top: 2.75rem; flex-wrap: wrap; }
.hero__scroll {
  position: absolute; bottom: 2.25rem; left: var(--pad);
  display: flex; align-items: center; gap: .8rem;
  font-size: .72rem; text-transform: uppercase; letter-spacing: .25em; color: var(--ink-faint);
}
.hero__scroll-line { width: 60px; height: 1px; background: var(--ink-faint); position: relative; overflow: hidden; }
.hero__scroll-line::after {
  content: ""; position: absolute; inset: 0; background: var(--teal);
  transform: translateX(-100%); animation: scrollLine 2.2s var(--ease) infinite;
}
@keyframes scrollLine { 0% { transform: translateX(-100%); } 50% { transform: translateX(0); } 100% { transform: translateX(100%); } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .95rem 1.75rem; border-radius: 100px;
  font-size: .92rem; font-weight: 600; letter-spacing: .01em;
  border: 1px solid transparent;
  transition: transform .3s var(--ease), background .3s, color .3s, border-color .3s;
}
.btn--primary { background: var(--teal); color: #04110F; }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px var(--teal-glow); }
.btn--ghost { border-color: var(--border); color: var(--ink); }
.btn--ghost:hover { border-color: var(--teal); color: var(--teal); transform: translateY(-3px); }

/* ---------- About ---------- */
.about__grid {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.about__copy p { font-size: clamp(1.05rem, 1.7vw, 1.4rem); color: var(--ink-dim); margin-bottom: 1.5rem; }
.about__copy p:first-child { color: var(--ink); }
.about__visual { perspective: 1000px; }
.about__photo {
  aspect-ratio: 4/5; border-radius: 16px;
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(23,195,178,0.22), transparent 55%),
    linear-gradient(160deg, #0f1514, #0a0a0a);
  border: 1px solid var(--border);
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: rgba(244,245,243,0.12); letter-spacing: .1em;
  transform-style: preserve-3d;
}

/* ---------- Stats ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; margin-top: clamp(3rem, 7vw, 5rem);
  background: var(--border); border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
}
.stat { background: var(--bg); padding: clamp(1.5rem, 3vw, 2.5rem); }
.stat__num {
  display: block; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: 1; color: var(--teal);
  letter-spacing: -0.02em;
}
.stat__label { display: block; margin-top: .75rem; font-size: .85rem; color: var(--ink-dim); }

/* ---------- Services ---------- */
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.service {
  padding: clamp(1.75rem, 3vw, 2.5rem);
  border: 1px solid var(--border); border-radius: 16px;
  background: var(--surface);
  transform-style: preserve-3d;
  transition: border-color .4s, background .4s, transform .3s var(--ease);
  position: relative; overflow: hidden;
}
.service::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--teal), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease);
}
.service:hover { border-color: var(--teal); background: rgba(23,195,178,0.05); }
.service:hover::before { transform: scaleX(1); }
.service__num { font-family: var(--font-display); color: var(--teal); font-size: .85rem; font-weight: 700; }
.service h3 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; margin: 1rem 0 .85rem; }
.service p { color: var(--ink-dim); font-size: .98rem; }

/* ---------- Work ---------- */
.work__list { display: grid; gap: 1.25rem; }
.project {
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  border: 1px solid var(--border); border-radius: 16px;
  background: var(--surface);
  display: grid; gap: 1rem;
  transform-style: preserve-3d;
  transition: border-color .4s, background .4s;
  position: relative;
}
.project:hover { border-color: var(--teal); background: rgba(23,195,178,0.04); }
.project__meta { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.project__tag {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .16em; color: var(--teal);
  border: 1px solid var(--teal-deep); padding: .3rem .8rem; border-radius: 100px;
}
.project__link { font-size: .82rem; color: var(--ink-dim); transition: color .25s; }
.project__link:hover { color: var(--teal); }
.project__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.5rem, 3.5vw, 2.4rem); line-height: 1.05; letter-spacing: -0.02em;
  max-width: 20ch;
}
.project__desc { color: var(--ink-dim); max-width: 60ch; font-size: 1rem; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; display: grid; gap: 0; }
.timeline__item {
  display: grid; grid-template-columns: 220px 1fr; gap: 2rem;
  padding: 2rem 0; border-top: 1px solid var(--border);
  align-items: baseline;
}
.timeline__item:last-child { border-bottom: 1px solid var(--border); }
.timeline__year { font-family: var(--font-display); color: var(--teal); font-weight: 600; font-size: .95rem; }
.timeline__body h3 { font-family: var(--font-display); font-size: 1.45rem; font-weight: 700; margin-bottom: .35rem; }
.timeline__body p { color: var(--ink-dim); }

/* ---------- Contact ---------- */
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 5rem); }
.contact__line {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.6rem, 3.5vw, 2.6rem); line-height: 1.1; letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
}
.contact__details { display: grid; gap: .9rem; font-size: 1.05rem; }
.contact__details a { color: var(--ink); width: fit-content; transition: color .25s; border-bottom: 1px solid transparent; }
.contact__details a:hover { color: var(--teal); border-color: var(--teal); }
.contact__details span { color: var(--ink-dim); }
.contact__social { display: flex; gap: 1.5rem; margin-top: .5rem; }
.contact__social a { color: var(--ink-dim); font-size: .95rem; }

.contact__form { display: grid; gap: 1.5rem; }
.field { position: relative; }
.field input, .field textarea {
  width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--border);
  padding: .9rem 0; color: var(--ink); font-family: inherit; font-size: 1.05rem;
  resize: none; transition: border-color .3s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--teal); }
.field label {
  position: absolute; left: 0; top: .9rem; color: var(--ink-faint);
  pointer-events: none; transition: transform .3s var(--ease), color .3s, font-size .3s;
}
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label {
  transform: translateY(-1.6rem); font-size: .78rem; color: var(--teal);
}
.contact__form .btn { justify-self: start; margin-top: .5rem; }
.contact__status { font-size: .9rem; color: var(--teal); min-height: 1.2em; }

/* ---------- Footer ---------- */
.footer {
  max-width: var(--maxw); margin: 0 auto;
  padding: 2.5rem var(--pad);
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  color: var(--ink-faint); font-size: .85rem;
}

/* ---------- Reveal states (JS-driven) ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); }
.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about__grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .services__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
  .timeline__item { grid-template-columns: 1fr; gap: .5rem; }
}
@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr; }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  [data-reveal] { opacity: 1; transform: none; }
}