/* ==========================================================================
   Sarth Labs — v2, Bareilly Digital visual language
   Kanit 900 / near-black / metallic gradient type / morphing orb
   ========================================================================== */

:root {
  --bg: #0c0c0c;
  --bg-2: #131313;
  --line: rgba(255, 255, 255, 0.1);
  --text: #e8e8ea;
  --muted: #8b8b90;
  --pink: #e840a0;
  --violet: #7621b0;
  --metal: linear-gradient(180deg, #646973 0%, #bbccd7 100%);
  --maxw: 1200px;
  --font: "Kanit", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* reveal — starts at 0.001 not 0, so nothing can be permanently invisible */
.rv { opacity: 0.001; transform: translateY(20px); transition: opacity .8s ease, transform .8s ease; }
.rv.on { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

.label {
  font-size: .72rem; font-weight: 600; letter-spacing: .22em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 20px;
}
.label-sub { margin-top: 64px; }

.big {
  font-size: clamp(1.7rem, 3.6vw, 2.9rem);
  font-weight: 600; line-height: 1.12; letter-spacing: -.02em;
  margin-bottom: 40px; max-width: 900px;
}

/* ---------- metallic mega type ---------- */
.mega {
  position: relative;
  z-index: 2;
  font-weight: 900;
  font-size: clamp(3.4rem, 13vw, 10.2rem);
  line-height: .9;
  letter-spacing: -.03em;
  background: var(--metal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-transform: uppercase;
}
.mega-sm { font-size: clamp(2.6rem, 8vw, 6rem); margin-bottom: 28px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding: 20px 0; transition: background .3s, padding .3s;
}
.nav.stuck { background: rgba(12, 12, 12, .9); backdrop-filter: blur(14px); padding: 13px 0; border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-weight: 800; font-size: 1.15rem; letter-spacing: -.02em; display: inline-flex; align-items: center; gap: 9px; }
.logo-mark { width: 26px; height: 26px; display: block; flex: 0 0 auto; }
.logo span { color: var(--pink); }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: .76rem; font-weight: 500; letter-spacing: .18em;
  text-transform: uppercase; color: var(--muted); transition: color .2s;
}
.nav-links a:hover { color: var(--text); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); }

/* ---------- hero ---------- */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 150px 0 70px;
  position: relative; overflow: hidden;
}
.hero-inner { width: 100%; text-align: center; position: relative; }

.orb {
  width: clamp(180px, 26vw, 300px);
  aspect-ratio: 1;
  position: relative;
  z-index: 1;
  margin: -9% auto 5%;
  background: radial-gradient(at 35% 35%,
    #e040c8 0%, #b600a8 20%, #7621b0 50%, #2a0a3a 75%, #be4c00 100%);
  border-radius: 38% 54% 59% 48% / 52% 51% 40% 54%;
  animation: morph 14s ease-in-out infinite, float 9s ease-in-out infinite;
  box-shadow: 0 0 120px 20px rgba(182, 0, 168, .22);
}
@keyframes morph {
  0%,100% { border-radius: 38% 54% 59% 48% / 52% 51% 40% 54%; }
  33%     { border-radius: 58% 42% 40% 60% / 45% 58% 41% 54%; }
  66%     { border-radius: 45% 62% 52% 41% / 60% 43% 56% 40%; }
}
@keyframes float { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-16px) } }
@media (prefers-reduced-motion: reduce) { .orb { animation: none; } }

.hero-line {
  font-size: clamp(.68rem, 1.05vw, .8rem);
  font-weight: 400; letter-spacing: .2em; text-transform: uppercase;
  color: var(--muted); max-width: 640px; margin: 0 auto 26px; line-height: 1.9;
}
.status {
  font-size: .68rem; font-weight: 500; letter-spacing: .2em;
  text-transform: uppercase; color: var(--muted);
  display: inline-flex; align-items: center; gap: 9px;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%; background: #35d07f;
  box-shadow: 0 0 0 4px rgba(53, 208, 127, .18);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .45 } }

/* ---------- stats ---------- */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 48px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; }
.stat strong { display: block; font-size: 2.7rem; font-weight: 800; line-height: 1; margin-bottom: 6px; }
.stat span { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }

/* ---------- sections ---------- */
.section { padding: 110px 0; }
.about-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.about-cols p { color: var(--muted); font-size: 1.02rem; }

/* ---------- services ---------- */
.svc-list { border-top: 1px solid var(--line); }
.svc {
  display: grid; grid-template-columns: 90px 1fr; gap: 24px;
  padding: 34px 0; border-bottom: 1px solid var(--line);
  transition: background .3s, padding-left .3s;
}
.svc:hover { background: rgba(232, 64, 160, .04); padding-left: 14px; }
.svc-n { font-size: .8rem; font-weight: 600; letter-spacing: .14em; color: var(--pink); padding-top: 6px; }
.svc h3 { font-size: 1.5rem; font-weight: 600; letter-spacing: -.01em; margin-bottom: 8px; }
.svc p { color: var(--muted); max-width: 640px; font-size: .97rem; }

/* ---------- projects ---------- */
.proj {
  display: grid; grid-template-columns: 70px 1fr auto; gap: 26px;
  align-items: start; padding: 34px 0; border-top: 1px solid var(--line);
}
.proj-n { font-size: .8rem; font-weight: 600; letter-spacing: .14em; color: var(--pink); padding-top: 6px; }
.proj-kind { font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.proj h3 { font-size: 1.85rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: 10px; }
.proj-body > p { color: var(--muted); max-width: 680px; margin-bottom: 14px; font-size: .97rem; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li {
  font-size: .68rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
}
.proj-live {
  font-size: .66rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: #35d07f; border: 1px solid rgba(53, 208, 127, .35); border-radius: 999px;
  padding: 6px 13px; white-space: nowrap;
}

/* ---------- concept grid ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.mini {
  border: 1px solid var(--line); border-radius: 12px; padding: 26px;
  transition: border-color .25s, background .25s, transform .25s;
}
.mini:hover { border-color: var(--pink); background: rgba(232, 64, 160, .05); transform: translateY(-3px); }
.mini span { font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--pink); }
.mini h4 { font-size: 1.22rem; font-weight: 600; letter-spacing: -.01em; margin-top: 8px; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.step span {
  display: block; font-size: 2.8rem; font-weight: 800; line-height: 1;
  background: var(--metal); -webkit-background-clip: text; background-clip: text;
  color: transparent; margin-bottom: 12px;
}
.step h3 { font-size: 1.24rem; font-weight: 600; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: .95rem; }

/* ---------- contact ---------- */
.contact { text-align: center; border-top: 1px solid var(--line); }
.contact .label { margin-bottom: 26px; }
.mail {
  display: inline-block; font-size: clamp(1.1rem, 2.6vw, 1.8rem); font-weight: 500;
  color: var(--pink); border-bottom: 1px solid rgba(232, 64, 160, .4);
  padding-bottom: 4px; margin-bottom: 30px; transition: opacity .2s;
}
.mail:hover { opacity: .75; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 34px 0; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 18px; flex-wrap: wrap;
  font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .about-cols, .steps, .grid { grid-template-columns: 1fr; }
  .grid { gap: 12px; }
  .steps { gap: 34px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .proj { grid-template-columns: 50px 1fr; }
  .proj-live { grid-column: 2; justify-self: start; }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav { background: rgba(12, 12, 12, .92); backdrop-filter: blur(14px); padding: 14px 0; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0; background: var(--bg);
    flex-direction: column; gap: 0; padding: 0 24px; max-height: 0; overflow: hidden;
    transition: max-height .3s, padding .3s; border-top: 1px solid var(--line);
  }
  .nav-links.open { max-height: 300px; padding: 10px 24px 20px; }
  .nav-links a { padding: 14px 0; font-size: .82rem; }
  .section { padding: 76px 0; }
  .hero { padding: 120px 0 60px; min-height: auto; }
  .svc { grid-template-columns: 54px 1fr; gap: 14px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
}

/* ==========================================================================
   Screenshots: marquee, carousel, phone frames, concept cards
   ========================================================================== */

.note { color: var(--muted); max-width: 640px; margin: -22px 0 34px; font-size: .97rem; }
.section-alt { background: #101010; }

/* ---------------- marquee ---------------- */
.marquee-wrap {
  padding: 56px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #0a0a0a;
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.marquee + .marquee { margin-top: 20px; }
.marquee-track { display: flex; gap: 22px; width: max-content; }
.marquee[data-dir="left"]  .marquee-track { animation: slide-left 52s linear infinite; }
.marquee[data-dir="right"] .marquee-track { animation: slide-right 52s linear infinite; }
.marquee:hover .marquee-track, .marquee:focus-within .marquee-track { animation-play-state: paused; }
@keyframes slide-left  { from { transform: translateX(0);    } to { transform: translateX(-50%); } }
@keyframes slide-right { from { transform: translateX(-50%); } to { transform: translateX(0);    } }
@media (prefers-reduced-motion: reduce) {
  .marquee { overflow-x: auto; }
  .marquee-track { animation: none; }
}
.shot {
  margin: 0; flex: 0 0 auto; width: 420px; position: relative;
  display: block; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--line); background: #151515;
  transition: border-color .25s, transform .25s;
}
.shot:hover, .shot:focus-visible { border-color: var(--pink); transform: translateY(-4px); }
.shot img { width: 100%; height: auto; display: block; }
.shot span {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 16px 12px;
  background: linear-gradient(transparent, rgba(12,12,12,.92));
  font-size: .82rem; font-weight: 500; color: var(--text);
  opacity: 0; transition: opacity .25s;
}
.shot:hover span, .shot:focus-visible span { opacity: 1; }

/* ---------------- case study ---------------- */
.case { border: 1px solid var(--line); border-radius: 18px; padding: 34px; background: rgba(255,255,255,.02); }
.case-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 14px; flex-wrap: wrap; }
.case h3 { font-size: 1.9rem; font-weight: 700; letter-spacing: -.02em; }
.case-sub { color: var(--muted); font-size: .9rem; margin-top: 4px; }
.pill-live {
  font-size: .66rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: #35d07f; border: 1px solid rgba(53,208,127,.35); border-radius: 999px;
  padding: 6px 13px; white-space: nowrap;
}
.case-body { color: var(--muted); max-width: 760px; margin-bottom: 26px; font-size: .97rem; }

/* ---------------- carousel ---------------- */
.carousel { position: relative; margin-bottom: 30px; }
.carousel-viewport {
  display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory;
  scroll-behavior: smooth; border-radius: 14px; scrollbar-width: none;
}
.carousel-viewport::-webkit-scrollbar { display: none; }
.slide { flex: 0 0 100%; scroll-snap-align: center; }
.slide img { width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line); display: block; }
.car-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(12,12,12,.82); color: var(--text);
  border: 1px solid var(--line); cursor: pointer;
  font-size: 1.5rem; line-height: 1; display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s;
}
.car-btn:hover { background: var(--pink); border-color: var(--pink); }
.car-prev { left: 12px; } .car-next { right: 12px; }
.car-dots { display: flex; justify-content: center; gap: 8px; margin-top: 14px; }
.car-dots button {
  width: 8px; height: 8px; border-radius: 50%; border: 0; padding: 0; cursor: pointer;
  background: rgba(255,255,255,.25); transition: background .2s, width .2s;
}
.car-dots button[aria-current="true"] { background: var(--pink); width: 22px; border-radius: 4px; }

/* ---------------- app + qr ---------------- */
.app-row { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.phones { display: flex; gap: 16px; }
.phone { margin: 0; flex: 1 1 0; min-width: 0; }
.phone img {
  width: 100%; height: auto; display: block;
  border-radius: 20px; border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 18px 40px -22px rgba(0,0,0,.9);
}
.qr-card {
  border: 1px solid var(--line); border-radius: 14px; padding: 22px;
  text-align: center; background: rgba(255,255,255,.03); width: 230px;
}
.qr-label { font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.qr { width: 140px; height: 140px; margin: 0 auto; background: #fff; padding: 8px; border-radius: 8px; display: block; }
.qr-note { font-size: .82rem; color: var(--muted); margin-top: 12px; }
.feature-tags { margin-top: 26px; }
.feature-tags li { border-color: rgba(232,64,160,.32); color: var(--text); }

.case-link { margin: -14px 0 24px; }
.case-link a {
  font-weight: 500; color: var(--pink);
  border-bottom: 1px solid rgba(232,64,160,.45); padding-bottom: 2px;
  transition: opacity .2s;
}
.case-link a:hover { opacity: .75; }

/* ---------------- concept cards ---------------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  background: rgba(255,255,255,.02);
  transition: border-color .25s, transform .25s, background .25s;
  display: flex; flex-direction: column;
}
.card:hover { border-color: var(--pink); transform: translateY(-4px); background: rgba(232,64,160,.05); }
.card-img { aspect-ratio: 16 / 10; overflow: hidden; background: #151515; border-bottom: 1px solid var(--line); }
.card-img img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; transition: transform .4s ease; }
.card:hover .card-img img { transform: scale(1.04); }
.card-body { padding: 22px; }
.card-body span { font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--pink); }
.card-body h4 { font-size: 1.2rem; font-weight: 600; letter-spacing: -.01em; margin: 8px 0 8px; }
.card-body p { color: var(--muted); font-size: .9rem; }

/* ---------------- contact ---------------- */
.contact { text-align: center; border-top: 1px solid var(--line); }
.contact-row { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 22px; margin-bottom: 30px; }
.btn-wa {
  display: inline-flex; align-items: center; gap: 10px;
  background: #1faa53; color: #fff; font-weight: 600; font-size: 1rem;
  padding: 15px 30px; border-radius: 999px; transition: background .2s, transform .2s;
}
.btn-wa:hover { background: #179245; transform: translateY(-2px); }
.btn-mail {
  display: inline-flex; align-items: center;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 14px 26px; font-size: .96rem; font-weight: 500; color: var(--text);
  transition: border-color .2s, background .2s, transform .2s;
}
.btn-mail:hover { border-color: var(--pink); background: rgba(232,64,160,.08); transform: translateY(-2px); }
.contact-addr { color: var(--muted); font-size: .95rem; margin-bottom: 26px; }

/* ---------------- responsive ---------------- */
@media (max-width: 980px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .app-row { grid-template-columns: 1fr; }
  .qr-card { width: 100%; max-width: 320px; margin: 0 auto; }
  .shot { width: 330px; }
}
@media (max-width: 720px) {
  .case { padding: 22px; }
  .grid { grid-template-columns: 1fr; }
  .shot { width: 250px; }
  .phones { gap: 10px; }
  .car-btn { width: 38px; height: 38px; }
  .contact-row { flex-direction: column; gap: 18px; }
  .btn-wa { width: 100%; justify-content: center; }
}