/* ════════════════════════════════════════════
   SarvamSync — Antigravity Design System
   Light. Airy. Minimal.
   ════════════════════════════════════════════ */

:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --text-3: #adadb8;
  --accent: #6366f1;
  --easy: cubic-bezier(.4, 0, .2, 1);
  --font: 'Inter', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

em {
  font-style: normal;
}

/* ════ BLOBS ════ */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  opacity: .28;
}

.blob--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #a78bfa, transparent 70%);
  top: -200px;
  right: -100px;
}

.blob--2 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, #60a5fa, transparent 70%);
  bottom: 25%;
  left: -160px;
}

.blob--3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #34d399, transparent 70%);
  bottom: -80px;
  right: 18%;
}

/* ════ NAV ════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 4rem;
  background: rgba(245, 245, 247, .82);
  backdrop-filter: blur(24px) saturate(1.6);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
}

.nav__logo {
  display: flex;
  align-items: center;
  position: relative;
  width: 220px;
  height: 48px;
  overflow: visible;
  text-decoration: none;
  z-index: 10;
}

.logo-img {
  position: absolute;
  top: 50%;
  left: 0;
  width: 800px;
  height: 800px;
  transform: translateY(-50%) scale(0.35);
  /* Enlarge text inside padding */
  transform-origin: left center;
  object-fit: contain;
  pointer-events: none;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
}

.nav__links a:hover {
  color: var(--text);
}

.nav__cta {
  color: var(--accent) !important;
  font-weight: 600;
}

.nav__cta:hover {
  opacity: .75;
}

/* ════ BADGE ════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .3rem .9rem;
  border-radius: 999px;
  background: rgba(99, 102, 241, .08);
  border: 1px solid rgba(99, 102, 241, .15);
  font-size: .78rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 2.5rem;
}

.badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: blink 2s ease-in-out infinite;
}

/* ════ CTA BUTTON ════ */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: var(--text);
  color: white;
  font-family: var(--font);
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 2rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all .25s var(--easy);
}

.cta-btn:hover {
  background: #000;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .12);
}

/* ════ LABEL + FEAT-TAG ════ */
.label {
  display: block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent);
  margin-bottom: .85rem;
}

.feat-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent);
  background: rgba(99, 102, 241, .07);
  border: 1px solid rgba(99, 102, 241, .12);
  padding: .25rem .75rem;
  border-radius: 999px;
  margin-bottom: 1.1rem;
}

/* ════ HERO ════ */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 4rem;
  padding-top: 5rem;
  max-width: 1300px;
  margin: 0 auto;
  text-align: center;
}

.hero__h1 {
  font-size: clamp(3.5rem, 7vw, 7rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--text);
  margin-bottom: 1.75rem;
}

.hero__h1 em {
  background: linear-gradient(120deg, var(--accent) 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__p {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0 auto 2.5rem auto;
  max-width: 360px;
}

.hero__logo-wrapper {
  position: relative;
  width: 400px;
  height: 90px;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(18px);
  animation: rise .65s var(--easy) forwards;
  animation-delay: .05s;
}

.hero__large-logo {
  position: absolute;
  top: 50%;
  left: -20px;
  width: 800px;
  height: 800px;
  transform: translateY(-50%) scale(0.65);
  /* Huge size for hero */
  transform-origin: left center;
  object-fit: contain;
  pointer-events: none;
}

.hero__card-wrap {
  position: absolute;
  right: 4rem;
  top: 50%;
  transform: translateY(-50%);
  width: 400px;
}

/* ════ RAINBOW CARD ════ */
.rainbow-card {
  position: relative;
  border-radius: 24px;
  padding: 2px;
  background: linear-gradient(135deg,
      #f43f5e, #f97316, #facc15, #4ade80, #60a5fa, #a78bfa, #f43f5e);
  background-size: 300% 300%;
  animation: rainbow-shift 6s linear infinite;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .09), 0 4px 12px rgba(0, 0, 0, .05);
}

/* colour variant gradients */
.rainbow-card--red {
  background: linear-gradient(135deg, #f43f5e, #fb923c, #f43f5e);
}

.rainbow-card--blue {
  background: linear-gradient(135deg, #3b82f6, #06b6d4, #6366f1, #3b82f6);
}

.rainbow-card--yellow {
  background: linear-gradient(135deg, #fbbf24, #f97316, #84cc16, #fbbf24);
}

.rainbow-card--green {
  background: linear-gradient(135deg, #4ade80, #60a5fa, #34d399, #4ade80);
}

.rainbow-card--indigo {
  background: linear-gradient(135deg, #6366f1, #a78bfa, #ec4899, #6366f1);
}

.rainbow-card--teal {
  background: linear-gradient(135deg, #14b8a6, #60a5fa, #34d399, #14b8a6);
}

.rainbow-card--purple {
  background: linear-gradient(135deg, #a78bfa, #f43f5e, #60a5fa, #a78bfa);
}

.rainbow-card--orange {
  background: linear-gradient(135deg, #f97316, #fbbf24, #f43f5e, #f97316);
}

.rainbow-card--sm {
  border-radius: 20px;
}

/* white inner fill */
.rainbow-card>* {
  background: #fff;
  border-radius: 22px;
}

.rainbow-card--sm>* {
  border-radius: 18px;
}

/* ════ WHATSAPP ════ */
.wa-mock {
  padding: 1.5rem;
}

.wa-mock__header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid #f0f0f0;
}

.wa-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #ec4899);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.wa-name {
  font-size: .9rem;
  font-weight: 700;
}

.wa-status {
  font-size: .75rem;
  color: #25d366;
  font-weight: 500;
}

.wa-msgs {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.wa-msgs--sm {
  gap: .5rem;
}

.wa-msg {
  max-width: 90%;
  font-size: .8rem;
  line-height: 1.55;
  padding: .6rem .85rem;
  border-radius: 12px;
  color: var(--text);
}

.wa-msg--in {
  background: #f0f0f0;
  border-bottom-left-radius: 2px;
  align-self: flex-start;
}

.wa-msg--out {
  background: #d9fdd3;
  border-bottom-right-radius: 2px;
  align-self: flex-end;
  text-align: right;
}

/* ════ FEATURES SECTION ════ */
.features {
  position: relative;
  z-index: 1;
  max-width: 1300px;
  margin: 0 auto;
  padding: 2rem 4rem 6rem;
}

.features__intro {
  text-align: center;
  padding: 5rem 0 2rem;
  border-top: 1px solid rgba(0, 0, 0, .06);
}

.features__h2 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.08;
  color: var(--text);
  margin-top: .5rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  padding: 5rem 0;
  border-top: 1px solid rgba(0, 0, 0, .06);
}

.feature-row--flip {
  direction: rtl;
}

.feature-row--flip>* {
  direction: ltr;
}

.feature-text h3 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.035em;
  color: var(--text);
  margin-bottom: 1rem;
}

.feature-text p {
  font-size: 1rem;
  line-height: 1.72;
  color: var(--text-2);
  max-width: 380px;
}

/* feat card label */
.feat-label {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-2);
  margin-bottom: 1rem;
}

.feat-card-inner {
  padding: 1.5rem;
}

/* ════ HOW IT WORKS ════ */
.how {
  position: relative;
  z-index: 1;
  max-width: 1300px;
  margin: 0 auto;
  padding: 6rem 4rem;
  text-align: center;
}

.how .label {
  text-align: center;
}

.how__h2 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 4rem;
}

.how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: left;
}

.how__step {
  padding: 2.5rem 2rem;
  background: white;
  border-radius: 20px;
  border: 1px solid rgba(0, 0, 0, .07);
  transition: transform .3s var(--easy), box-shadow .3s var(--easy);
}

.how__step:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .08);
}

.how__num {
  display: block;
  font-size: 2.25rem;
  font-weight: 800;
  color: #e5e5ea;
  letter-spacing: -.04em;
  margin-bottom: .75rem;
}

.how__step h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

.how__step p {
  font-size: .88rem;
  line-height: 1.65;
  color: var(--text-2);
}

/* ════ CTA ════ */
.cta-section {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 8rem 4rem 10rem;
}

.cta__h2 {
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--text);
  margin-bottom: 1rem;
}

.cta__p {
  font-size: 1.05rem;
  color: var(--text-2);
  margin-bottom: 2.5rem;
}

/* ════ FOOTER ════ */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.5rem;
  font-size: .8rem;
  color: var(--text-3);
  border-top: 1px solid rgba(0, 0, 0, .06);
}

.footer-logo-wrap {
  position: relative;
  width: 200px;
  height: 48px;
  margin: 0 auto 1.5rem;
}

.footer-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  transform: translate(-50%, -50%) scale(0.28);
  /* Scaled for footer */
  object-fit: contain;
  opacity: 0.6;
  pointer-events: none;
}

/* ════ ANIMATIONS ════ */
@keyframes rainbow-shift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: .3;
  }
}

.badge,
.hero__h1,
.hero__p,
.hero .cta-btn,
.hero__card-wrap,
.features__intro,
.feature-row,
.how__h2,
.how__step,
.cta__h2,
.cta__p,
.cta-section .cta-btn {
  opacity: 0;
  transform: translateY(18px);
  animation: rise .65s var(--easy) forwards;
}

.badge {
  animation-delay: .05s;
}

.hero__h1 {
  animation-delay: .15s;
}

.hero__p {
  animation-delay: .25s;
}

.hero .cta-btn {
  animation-delay: .33s;
}

.hero__card-wrap {
  animation-delay: .2s;
}

.features__intro {
  animation-delay: .05s;
}

.feature-row:nth-child(2) {
  animation-delay: .1s;
}

.feature-row:nth-child(3) {
  animation-delay: .15s;
}

.feature-row:nth-child(4) {
  animation-delay: .2s;
}

.feature-row:nth-child(5) {
  animation-delay: .25s;
}

.feature-row:nth-child(6) {
  animation-delay: .1s;
}

.feature-row:nth-child(7) {
  animation-delay: .15s;
}

.feature-row:nth-child(8) {
  animation-delay: .2s;
}

.feature-row:nth-child(9) {
  animation-delay: .25s;
}

.how__h2 {
  animation-delay: .1s;
}

.how__step:nth-child(1) {
  animation-delay: .15s;
}

.how__step:nth-child(2) {
  animation-delay: .25s;
}

.how__step:nth-child(3) {
  animation-delay: .35s;
}

.cta__h2 {
  animation-delay: .1s;
}

.cta__p {
  animation-delay: .2s;
}

.cta-section .cta-btn {
  animation-delay: .3s;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ════ RESPONSIVE ════ */
@media (max-width: 1024px) {
  .nav {
    padding: 1rem 1.5rem;
  }

  .nav__links {
    gap: 1.5rem;
  }

  .hero {
    padding: 0 2rem;
    padding-top: 5rem;
    align-items: center;
    text-align: center;
  }

  .hero__p {
    max-width: 100%;
  }

  .hero__card-wrap {
    display: none;
  }

  .features {
    padding: 2rem 1.5rem 4rem;
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 3.5rem 0;
  }

  .feature-row--flip {
    direction: ltr;
  }

  .feature-text p {
    max-width: 100%;
  }

  .how {
    padding: 4rem 1.5rem;
  }

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

  .cta-section {
    padding: 5rem 1.5rem 7rem;
  }
}

@media (max-width: 480px) {
  .nav__links a:not(.nav__cta) {
    display: none;
  }

  .hero__h1 {
    font-size: 2.75rem;
  }
}