* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: #0b0f1c; /* fallback deep navy */
  min-height: 100vh;
  color: #f0f4ff;
  line-height: 1.5;
}

/* main background with overlay (net image + semi translucent deep blue) */
.bg-cover {
  background:
    linear-gradient(
      0deg,
      rgba(10, 20, 50, 0.75) 0%,
      rgba(15, 25, 70, 0.6) 100%
    ),
    url("https://images.unsplash.com/photo-1542038784456-1ea8e935640e?q=80&w=2070&auto=format&fit=crop")
      center/cover fixed no-repeat;
  background-attachment: fixed; /* subtle parallax effect */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* blue‑purple gradient overlay (additional layer for theme) */
.gradient-overlay {
  background:
    radial-gradient(
      circle at 20% 30%,
      rgba(100, 80, 220, 0.25) 0%,
      transparent 60%
    ),
    linear-gradient(
      125deg,
      rgba(70, 40, 200, 0.2) 0%,
      rgba(150, 80, 255, 0.15) 80%
    );
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* header navigation */
.page-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  background: rgba(8, 12, 30, 0.3);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(130deg, #b7abff, #6d8eff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 15px rgba(130, 100, 255, 0.5);
}

.nav-links {
  display: flex;
  gap: 2.2rem;
  flex-wrap: wrap;
  font-weight: 500;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 1.1rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: 0.2s;
}

.nav-links a:hover {
  border-bottom-color: #9f8bff;
  color: white;
}

/* footer */
.page-footer {
  margin-top: 4rem;
  padding: 2.5rem 0 2rem;
  background: rgba(5, 8, 20, 0.7);
  backdrop-filter: blur(12px);
  border-top: 1px solid rgba(150, 130, 255, 0.2);
  text-align: center;
  font-size: 1rem;
}

.footer-info p {
  margin: 0.4rem 0;
  opacity: 0.9;
}

.footer-email {
  font-size: 1.2rem;
  font-weight: 400;
  background: linear-gradient(120deg, #b2a5ff, #9ec3ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  margin-bottom: 0.5rem;
}

.copyright {
  font-size: 0.95rem;
  color: #a0b0d0;
}

/* sections general */
.section {
  padding: 5rem 0 3rem;
  scroll-margin-top: 5rem;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 600;
  margin-bottom: 2rem;
  background: linear-gradient(145deg, #ffffff, #d0daff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.01em;
  line-height: 1.2;
  text-shadow: 0 0 20px rgba(160, 140, 255, 0.4);
}

/* banner area */
.banner-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 0 3rem;
}

.banner-content {
  max-width: 900px;
}

.banner-tagline {
  font-size: 1.8rem;
  font-weight: 300;
  color: #e2dcff;
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.banner-headline {
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(to right, #ffffff, #dbb7ff, #b0ccff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.banner-description {
  font-size: 1.4rem;
  max-width: 800px;
  margin: 1rem auto 0;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(4px);
  padding: 1.5rem 2.5rem;
  border-radius: 80px 20px 80px 20px;
  border-left: 4px solid #a17aff;
  border-bottom: 4px solid #6f9eff;
}

/* intro & features — multi‑paragraph with screenshots */
.intro-grid,
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
  align-items: center;
}

.intro-text p,
.feature-text-block p {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  background: rgba(20, 20, 45, 0.3);
  backdrop-filter: blur(3px);
  padding: 1.5rem 2rem;
  border-radius: 30px 8px 30px 8px;
  border: 1px solid rgba(180, 160, 255, 0.2);
  box-shadow: 0 20px 30px -15px rgba(0, 0, 0, 0.6);
}

.intro-text p:first-child {
  background: rgba(45, 30, 80, 0.45);
  border-left: 6px solid #a275ff;
}
.intro-text p:last-child {
  background: rgba(25, 35, 75, 0.45);
  border-right: 6px solid #75a2ff;
}

.feature-text-block p:first-child {
  background: rgba(55, 40, 90, 0.45);
  border-left: 6px solid #c47eff;
}
.feature-text-block p:last-child {
  background: rgba(30, 45, 95, 0.45);
  border-right: 6px solid #5f9eff;
}

/* screenshot gallery artistic */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.8rem;
  margin-top: 2rem;
}

.art-screenshot {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.screenshot-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  border-radius: 40px 12px 40px 12px;
  padding: 1.2rem 1rem;
  border: 1px solid rgba(200, 170, 255, 0.25);
  box-shadow:
    0 25px 40px -18px #000000cc,
    0 0 0 2px rgba(150, 100, 255, 0.1) inset;
  transition: all 0.25s;
  transform: rotate(0deg);
}

.screenshot-card:nth-child(even) {
  transform: translateY(20px) rotate(1deg);
  border-radius: 20px 40px 20px 40px;
}

.screenshot-card:nth-child(odd) {
  transform: translateY(-5px) rotate(-1deg);
}

.screenshot-card:hover {
  transform: scale(1.02) translateY(-5px) rotate(0);
  border-color: #a88eff;
}

.screenshot-img {
  width: 100%;
  height: auto;
  border-radius: 24px 8px 24px 8px;
  display: block;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(255, 255, 240, 0.15);
}

/* screenshot area itself (section) */
.screenshot-showcase {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.8rem;
  margin-top: 2rem;
}

.screenshot-showcase .screenshot-card {
  transform: none;
  border-radius: 28px 8px 28px 8px;
}

.screenshot-showcase .screenshot-card:nth-child(2) {
  transform: translateY(15px);
}
.screenshot-showcase .screenshot-card:nth-child(3) {
  transform: translateY(25px);
}
.screenshot-showcase .screenshot-card:nth-child(4) {
  transform: translateY(5px);
}

/* mobile & tablet layout */
@media (max-width: 900px) {
  .intro-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .screenshot-showcase {
    grid-template-columns: repeat(2, 1fr);
  }
  .banner-headline {
    font-size: 3.2rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 1.2rem;
  }
  .nav-bar {
    flex-direction: column;
    gap: 1rem;
  }
  .nav-links {
    gap: 1.4rem;
    justify-content: center;
  }
  .section-title {
    font-size: 2.3rem;
  }
  .banner-headline {
    font-size: 2.6rem;
  }
  .banner-description {
    font-size: 1.1rem;
    padding: 1rem;
  }
  .screenshot-showcase {
    grid-template-columns: 1fr;
  }
  .screenshot-showcase .screenshot-card {
    max-width: 350px;
    margin: 0 auto;
  }
}

/* additional artistic touches */
hr {
  border: 0.5px solid rgba(200, 180, 255, 0.2);
  margin: 2rem 0;
}

.highlight-purple {
  font-weight: 600;
  color: #d3bdff;
}

/* placeholder screenshots using unsplash photography (safe) */
.screenshot-img {
  background: #2c2f4a;
  min-height: 220px;
  object-fit: contain;
  aspect-ratio: 9/16; /* vertical screenshots typical for app */
  width: 100%;
}