:root {
  --color-bg: #090f1f;
  --color-surface: rgba(255, 255, 255, 0.09);
  --color-border: rgba(255, 255, 255, 0.2);
  --color-text: #f8fbff;
  --color-text-soft: #c5d0eb;
  --color-accent: #8f7dff;
  --color-accent-2: #4fc3ff;
  --color-success: #44d18f;
  --color-error: #ff6b81;
  --shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.4);
  --radius-lg: 22px;
  --radius-md: 14px;
  --max-width: 1180px;
  --transition: 300ms ease;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(circle at top, #13203f 0%, var(--color-bg) 50%);
  color: var(--color-text);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.hero {
  position: relative;
  isolation: isolate;
  width: 100%;
  height: 850px;
  overflow: hidden;
}

.hero__slides {
  position: absolute;
  inset: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 1.2s ease, transform 6s ease;
}

.hero__slide.is-active {
  opacity: 1;
  transform: scale(1);
}

.hero__gradient-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, rgba(9, 16, 36, 0.85), rgba(23, 14, 48, 0.72)),
    radial-gradient(circle at 10% 15%, rgba(79, 195, 255, 0.23), transparent 45%),
    radial-gradient(circle at 88% 80%, rgba(143, 125, 255, 0.3), transparent 40%);
  animation: driftGradient 10s ease-in-out infinite alternate;
}

/* Subtle QR-inspired floating decorative blocks */
.floating-qrs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.qr-float {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.09) 25%, transparent 25% 50%, rgba(255, 255, 255, 0.09) 50% 75%, transparent 75%),
    linear-gradient(rgba(255, 255, 255, 0.06) 25%, transparent 25% 50%, rgba(255, 255, 255, 0.06) 50% 75%, transparent 75%);
  background-size: 20px 20px;
  border-radius: 10px;
  opacity: 0.24;
  animation: floatUp 11s ease-in-out infinite;
}

.qr-float--1 {
  width: 140px;
  height: 140px;
  top: 14%;
  right: 11%;
}

.qr-float--2 {
  width: 90px;
  height: 90px;
  bottom: 24%;
  left: 8%;
  animation-delay: 1.4s;
}

.qr-float--3 {
  width: 110px;
  height: 110px;
  bottom: 11%;
  right: 30%;
  animation-delay: 2.8s;
}

.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 2rem;
}

.hero__eyebrow,
.section__eyebrow {
  margin: 0;
  color: var(--color-accent-2);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.hero__text h1 {
  font-size: clamp(2rem, 4vw, 3.8rem);
  line-height: 1.1;
  margin: 0.75rem 0;
}

.hero__subheadline {
  color: var(--color-text-soft);
  max-width: 55ch;
  margin: 0 0 1.1rem;
}

.hero__note {
  margin: 0;
  color: #e3defe;
  font-weight: 600;
}

.hero__form-card {
  justify-self: end;
  width: min(100%, 440px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: linear-gradient(
    140deg,
    rgba(255, 255, 255, 0.17),
    rgba(255, 255, 255, 0.06)
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft), 0 0 40px rgba(79, 195, 255, 0.13);
}

.hero__form-card h2 {
  margin: 0 0 0.45rem;
}

.hero__form-card p {
  margin: 0 0 1rem;
  color: var(--color-text-soft);
}

form {
  display: grid;
  gap: 0.8rem;
}

input[type="email"] {
  width: 100%;
  border: 1px solid var(--color-border);
  background: rgba(5, 10, 24, 0.58);
  border-radius: var(--radius-md);
  color: var(--color-text);
  padding: 0.85rem 0.95rem;
  font: inherit;
  outline: none;
  transition: var(--transition);
}

input[type="email"]::placeholder {
  color: #a4b2d2;
}

input[type="email"]:focus {
  border-color: #98d7ff;
  box-shadow: 0 0 0 4px rgba(79, 195, 255, 0.19);
}

button {
  border: 0;
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(110deg, var(--color-accent), var(--color-accent-2));
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 20px rgba(84, 129, 255, 0.35);
  filter: brightness(1.08);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.form-message {
  min-height: 1.2rem;
  margin: 0.85rem 0 0;
  font-size: 0.92rem;
  color: var(--color-text-soft);
}

.form-message.is-success {
  color: var(--color-success);
}

.form-message.is-error {
  color: var(--color-error);
}

.section {
  padding: 5rem 0;
}

.section__header h2,
.why__content h2 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.5rem, 2.4vw, 2.4rem);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.feature-card {
  padding: 1.2rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(143, 125, 255, 0.6);
  background: rgba(255, 255, 255, 0.07);
}

.feature-card h3 {
  margin-top: 0;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--color-text-soft);
}

.why {
  padding-top: 1rem;
}

.why__content {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

.why__content p:last-child {
  color: var(--color-text-soft);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@keyframes driftGradient {
  from {
    filter: hue-rotate(0deg);
  }
  to {
    filter: hue-rotate(12deg);
  }
}

@keyframes floatUp {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-18px) rotate(5deg);
  }
}

@media (max-width: 1024px) {
  .hero {
    height: auto;
    min-height: 850px;
  }

  .hero__content {
    grid-template-columns: 1fr;
    align-content: center;
    padding-block: 4rem;
  }

  .hero__form-card {
    justify-self: start;
  }

  .features__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .hero {
    min-height: 760px;
  }

  .hero__text h1 {
    font-size: 2rem;
  }

  .hero__form-card {
    padding: 1.2rem;
  }

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

  .section {
    padding: 3.6rem 0;
  }
}