@import url("https://fonts.googleapis.com/css2?family=Inter+Tight:ital,wght@0,100..900;1,100..900&family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}
html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}
:root {
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-secondary: #6366f1;
  --color-accent: #22d3ee;

  --color-bg-main: #ffffff;
  --color-bg-card: #ffffff;
  --color-bg-hover: #eef2ff;

  --color-text-heading: #0a0f1e;
  --color-text-subheading: #1e293b;
  --color-text-body: #475569;
  --color-text-muted: #94a3b8;
  --color-text-white: #ffffff;

  --color-border-light: #e8edf4;

  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.04);
  --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.07);
  --shadow-primary-glow: 0 8px 28px rgba(250, 204, 21, 0.45);

  --btn-radius: 12px;
  --btn-padding: 14px 26px;
  --transition-fast: 0.22s ease;

  --radius-card: 18px;
  --container-width: 1180px;

  --font-heading: "Inter Tight", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;
  --radius-btn: 12px;
}

body {
  background: #ffffff;
  padding-top: 72px;
  color: var(--color-text-body);
}

/* ===================== NAVBAR ===================== */
.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-navbar {
  width: 100%;
  position: fixed;
  height: 72px;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.section-navbar .nav-container .logo h1 a {
  color: var(--color-text-heading);
  text-decoration: none;
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  font-family: var(--font-heading);
  font-variant: small-caps;
}

.section-navbar .navbar ul {
  display: flex;
  align-items: center;
  gap: 1rem;
  list-style: none;
}

.section-navbar .navbar ul li a {
  color: #374151;
  font-weight: 500;
  font-size: 1.5rem;
  display: inline-block;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.section-navbar .navbar ul li a:hover {
  color: var(--color-text-heading);
}

.login-btn {
  background: transparent;
  border: 1.5px solid #e2e8f0;
  color: #0f172a !important;
  padding: 8px 20px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 1.5rem;
  transition: all 0.22s ease;
  cursor: pointer;
}

.login-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

.register-btn {
  background: #facc15;
  border: none;
  color: #0a0f1e !important;
  padding: 8px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1.5rem;
  transition: all 0.22s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.register-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.45) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.register-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(250, 204, 21, 0.5);
}

.register-btn:hover::after {
  opacity: 1;
}

/* ===================== HERO ===================== */
.section-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 7rem 2rem 6rem;
  background: #ffffff;
  min-height: calc(100vh - 72px);
  position: relative;
  overflow: hidden;
}

/* Ambient gradient blobs */
.section-hero .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.section-hero .blob-1 {
  width: 520px;
  height: 520px;
  background: radial-gradient(
    circle,
    rgba(34, 211, 238, 0.13) 0%,
    transparent 70%
  );
  top: -80px;
  left: -120px;
}

.section-hero .blob-2 {
  width: 480px;
  height: 480px;
  background: radial-gradient(
    circle,
    rgba(99, 102, 241, 0.11) 0%,
    transparent 70%
  );
  top: 10%;
  right: -80px;
}

.section-hero .blob-3 {
  width: 360px;
  height: 360px;
  background: radial-gradient(
    circle,
    rgba(34, 211, 238, 0.09) 0%,
    transparent 70%
  );
  bottom: 0;
  left: 40%;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.grid {
  display: grid;
  align-items: center;
}
.grid-cols--2 {
  grid-template-columns: 1fr 1fr;
  gap: 7rem;
  align-items: center;
}

.section-hero-content {
  max-width: 540px;
  text-align: left;
  align-items: flex-start;
}

.section-hero-content .hero-subheading {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: #6366f1;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  font-family: var(--font-body);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.section-hero-content .hero-subheading::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.8);
}

.section-hero-content .hero-heading {
  color: var(--color-text-heading);
  font-size: 5.4rem;
  line-height: 1.12;
  letter-spacing: -1.5px;
  font-weight: 800;
  font-family: var(--font-heading);
  margin-bottom: 1.8rem;
}

.section-hero-content .hero-heading span {
  background: linear-gradient(135deg, #facc15, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.section-hero-content .hero-para {
  font-family: var(--font-body);
  color: #475569;
  font-size: 1.7rem;
  line-height: 1.75;
  max-width: 460px;
  margin-bottom: 2.8rem;
  font-weight: 400;
}

/* Primary CTA button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: #0a0f1e;
  padding: 1.45rem 2.6rem;
  border-radius: var(--radius-btn);
  text-decoration: none;
  font-size: 1.6rem;
  font-weight: 700;
  font-family: var(--font-body);
  background: linear-gradient(135deg, #facc15, #f59e0b);
  box-shadow: 0 8px 28px rgba(250, 204, 21, 0.38);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  letter-spacing: -0.2px;
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(255, 255, 255, 0.5) 0%,
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.025);
  box-shadow: 0 14px 38px rgba(250, 204, 21, 0.55);
}

.btn-primary:hover::before {
  opacity: 1;
}

.hero-right {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-right::before {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  background: radial-gradient(
    circle,
    rgba(250, 204, 21, 0.18) 0%,
    transparent 70%
  );
  filter: blur(60px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
}

.hero-img {
  width: 100%;
  border: none;
  max-width: 480px;
  height: auto;
  background: none;
  filter: drop-shadow(0 28px 52px rgba(0, 0, 0, 0.1));
  transform: rotate(-4deg);
  transform-origin: center;
  transition: 0.35s ease;
  position: relative;
  z-index: 1;
}

.hero-img:hover {
  transform: rotate(-2deg) scale(1.03);
}

.mobile-auth {
  display: none;
}

/* ===================== SECTION WHY ===================== */
.section-why {
  padding: 10rem 4rem;
  background: #f8fafc;
  position: relative;
  overflow: hidden;
}

.section-why::before {
  content: "";
  position: absolute;
  width: 600px;
  height: 300px;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(
    ellipse,
    rgba(99, 102, 241, 0.06) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.section-title {
  text-align: center;
  font-size: 3.6rem;
  margin-bottom: 1.2rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--color-text-heading);
  letter-spacing: -1px;
}

.section-title + .section-subtitle {
  margin-top: 0.6rem;
}

.grid-columns-3 {
  grid-template-columns: repeat(3, minmax(260px, 360px));
  gap: 2.4rem;
  justify-content: center;
  margin-top: 5rem;
}

/* Icon pulse animation */
@keyframes iconPulse {
  0% {
    transform: scale(0.7);
    opacity: 0;
  }
  60% {
    transform: scale(1.12);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes softPulseRing {
  0% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.18);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
  }
}

.whycard {
  background: #ffffff;
  padding: 3.2rem 2.8rem;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border-light);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
  max-width: 360px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(32px);
  animation: fadeUp 0.55s ease forwards;
}

.whycard:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.08);
  border-color: #dde3ef;
}

.whycard:nth-child(1) {
  animation-delay: 0.15s;
}
.whycard:nth-child(2) {
  animation-delay: 0.3s;
}
.whycard:nth-child(3) {
  animation-delay: 0.45s;
}

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

.whycard-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  animation: iconPulse 0.6s ease both;
  animation-delay: inherit;
}

.whycard:nth-child(1) .whycard-icon {
  animation-delay: 0.35s;
}
.whycard:nth-child(2) .whycard-icon {
  animation-delay: 0.5s;
}
.whycard:nth-child(3) .whycard-icon {
  animation-delay: 0.65s;
}

.whycard-icon svg {
  width: 24px;
  height: 24px;
  stroke: #4f46e5;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.whycard h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--color-text-heading);
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: -0.3px;
}

.whycard p {
  font-size: 1.5rem;
  line-height: 1.65;
  color: #64748b;
  font-weight: 400;
}

/* ===================== HOW SECTION ===================== */
.how-section {
  padding: 9rem 4rem;
  background: #ffffff;
}

.grid-columns-4 {
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  position: relative;
  margin-top: 5rem;
}

.how-section-content {
  position: relative;
}

.step {
  position: relative;
  text-align: center;
  align-items: center;
  transition: 0.3s ease;
}

.step:hover {
  transform: translateY(-5px);
}

.step:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -50%;
  width: 100%;
  height: 1.5px;
  z-index: 0;
  top: 30px;
  background: linear-gradient(90deg, #e2e8f0, #c7d2dd);
}

.step-number {
  font-size: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #f8fafc;
  backdrop-filter: blur(10px);
  color: var(--color-text-body);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem auto;
  transition: 0.28s ease;
  border: 2px solid #e2e8f0;
  position: relative;
  z-index: 1;
}

.step-number img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.step:hover .step-number {
  transform: scale(1.1);
  background: #facc15;
  border-color: #facc15;
  box-shadow: 0 8px 24px rgba(250, 204, 21, 0.4);
}

.content p {
  font-size: 1.45rem;
  line-height: 1.65;
  color: var(--color-text-body);
  text-align: center;
  font-weight: 500;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: 0.55s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===================== USE CASE ===================== */
.section-benefits {
  padding: 8rem 4rem;
  background: #ffffff;
}

.section-usecase {
  padding: 9rem 4rem;
  background: #f8fafc;
  position: relative;
  overflow: hidden;
}

.section-subtitle {
  text-align: center;
  font-size: 1.6rem;
  color: #64748b;
  margin-bottom: 4rem;
  font-weight: 400;
}

.usecase-container {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.usecase {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  padding: 2rem 2.4rem;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid var(--color-border-light);
  transition: all 0.25s ease;
  box-shadow: var(--shadow-soft);
}

.usecase:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.07);
  border-color: #dde3ef;
}

.usecase-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.usecase-icon svg {
  width: 20px;
  height: 20px;
  stroke: #4f46e5;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.usecase h3 {
  font-size: 1.6rem;
  color: var(--color-text-heading);
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: -0.2px;
  margin-bottom: 0.3rem;
}

.usecase p {
  font-size: 1.4rem;
  color: #64748b;
  font-weight: 400;
}

.note {
  text-align: center;
  font-size: 1.3rem;
  color: #94a3b8;
  margin-top: 2.5rem;
}

/* ===================== FOOTER ===================== */
.footer {
  background: #ffffff;
  border-top: 1px solid var(--color-border-light);
  padding: 6rem 4rem 3rem;
}

.footer-container {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
}

.footer-brand h2 {
  font-size: 2.2rem;
  color: var(--color-text-heading);
  font-weight: 800;
  font-family: var(--font-heading);
  letter-spacing: -0.5px;
  font-variant: small-caps;
}

.footer .tagline {
  font-size: 1.3rem;
  font-weight: 600;
  color: #f59e0b;
  margin: 0.5rem 0 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-brand p {
  font-size: 1.45rem;
  color: #64748b;
  line-height: 1.65;
}

.footer-column h3 {
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  color: var(--color-text-heading);
  font-weight: 700;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 1rem;
}

.footer-column a {
  text-decoration: none;
  font-size: 1.4rem;
  color: #64748b;
  transition: color 0.2s;
}

.footer-column a:hover {
  color: var(--color-text-heading);
}

.footer-bottom {
  max-width: 1180px;
  margin: 0 auto;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 1.3rem;
  color: #94a3b8;
}
.footer-credit {
  margin: 6px 0 0;
  font-size: 13px;
  color: #8da2c1;
}
/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
  body {
    background: #ffffff;
    padding-top: 0 !important;
  }

  .section-navbar {
    position: relative;
    width: 100%;
    height: auto;
    padding: 16px 20px;
  }
  .section-navbar .nav-container {
    justify-content: center;
  }

  .navbar {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    justify-content: center;
  }
  .navbar ul {
    background: white;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    padding: 3rem 0;
    display: none;
  }

  .btn-primary {
    display: none;
  }

  .mobile-auth {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    justify-content: center;
  }
  .hero-right {
    display: none;
  }
  .grid-cols--2 {
    grid-template-columns: 1fr;
  }
  .section-hero-content .hero-heading {
    font-size: 3.6rem;
    line-height: 1.18;
  }

  .section-hero-content .hero-para {
    font-size: 1.55rem;
    padding: 0 0.5rem;
  }

  .section-hero-content {
    text-align: center;
    margin: 0 auto;
    padding-top: 0;
  }

  .section-hero-content .hero-subheading {
    justify-content: center;
  }

  .section-hero {
    padding: 4rem 2rem;
    min-height: auto;
  }

  .grid-columns-3 {
    grid-template-columns: 1fr;
    gap: 2rem;
    justify-self: center;
  }

  .grid-columns-4 {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .step:not(:last-child)::after {
    display: none;
  }

  .section-usecase {
    padding: 6rem 2rem;
  }

  .usecase-container {
    gap: 1rem;
  }

  .usecase {
    padding: 1.6rem 1.8rem;
  }

  .footer {
    padding: 4rem 2rem;
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  body {
    background: #ffffff;
  }

  .section-navbar .nav-container {
    flex-direction: column;
    gap: 1rem;
  }

  .section-hero {
    padding: 4rem 1.5rem;
  }

  .section-hero-content .hero-heading {
    font-size: 2.8rem;
    line-height: 1.2;
  }

  .section-hero-content .hero-para {
    font-size: 1.45rem;
  }

  .mobile-auth {
    flex-direction: column;
    gap: 1rem;
  }

  .register-btn,
  .login-btn {
    width: 100%;
    text-align: center;
    text-decoration: none;
  }

  .section-title {
    font-size: 2.8rem;
  }

  .footer-brand h2 {
    font-size: 2rem;
  }

  .footer-column h3 {
    font-size: 1.4rem;
  }
}