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

body {
  font-family:
    system-ui,
    "Segoe UI",
    "Helvetica Neue",
    "Poppins",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  line-height: 1.5;
  color: #f0f0f0;
  background-color: #0a1f1a;
  scroll-behavior: smooth;
}

/* background wrapper with image + dark overlay */
.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  overflow: hidden;
}

.bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.dark-mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(7, 22, 0, 0.836);
  backdrop-filter: blur(2px);
  z-index: 1;
}

/* main content container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ========== header / navbar ========== */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(130, 210, 150, 0.3);
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #b3ffcf, #2bc0a4);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: #eef5ef;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: 0.2s ease;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover {
  border-bottom-color: #2bc0a4;
  color: #c6ffcf;
}

/* sections */
section {
  padding: 5rem 0;
  scroll-margin-top: 80px;
}

/* banner area */
.banner {
  text-align: center;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.banner h1 {
  font-size: clamp(2.8rem, 8vw, 5rem);
  font-weight: 800;
  background: linear-gradient(125deg, #d2ffb0, #2bd4b0);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.tagline {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  color: #e5ffe5;
  margin-bottom: 2rem;
  font-weight: 400;
  opacity: 0.9;
}

.banner-desc {
  max-width: 720px;
  font-size: 1.1rem;
  background: rgba(0, 20, 10, 0.5);
  backdrop-filter: blur(6px);
  padding: 1.2rem 2rem;
  border-radius: 48px;
  margin: 1rem auto;
}

/* intro & features */
.feature-grid {
  display: flex;
  flex-direction: column;
  gap: 5rem;
}

.feature-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 3rem;
  background: rgba(10, 25, 18, 0.6);
  backdrop-filter: blur(8px);
  border-radius: 2.5rem;
  padding: 2rem;
  transition: transform 0.2s;
  border: 1px solid rgba(60, 180, 130, 0.3);
}

.feature-row.reverse {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1.2;
  min-width: 240px;
}

.feature-text h3 {
  font-size: 1.8rem;
  background: linear-gradient(135deg, #c0ffb0, #2bd0aa);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.feature-text p {
  color: #eef3ea;
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 0.8rem;
}

.feature-img {
  flex: 0.8;
  display: flex;
  justify-content: center;
}

.mockup-img {
  max-width: 240px;
  width: 100%;
  border-radius: 36px;
  box-shadow: 0 25px 40px -12px rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(80, 210, 150, 0.6);
  transition: all 0.25s;
}

/* screenshot section */
.screenshot-gallery {
  text-align: center;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  background: linear-gradient(130deg, #c8ffae, #2ed0ae);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.screenshots-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.screenshot-card {
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  border-radius: 32px;
  padding: 1rem;
  width: 220px;
  transition: transform 0.2s;
  border: 1px solid rgba(70, 190, 140, 0.5);
}

.screenshot-card img {
  width: 100%;
  border-radius: 28px;
  display: block;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.screenshot-card p {
  margin-top: 12px;
  font-weight: 500;
  font-size: 0.9rem;
}

/* footer */
footer {
  border-top: 1px solid rgba(50, 150, 110, 0.4);
  padding: 2.5rem 0 2rem;
  text-align: center;
  margin-top: 1rem;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.footer-nav a {
  color: #cae6cf;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: #6effb0;
}

.contact-email {
  font-size: 1rem;
  margin: 1rem 0 0.5rem;
  letter-spacing: 0.3px;
}

.contact-email a {
  color: #bef5d0;
  text-decoration: none;
  border-bottom: 1px dashed #6bc99a;
}

.copyright {
  font-size: 0.85rem;
  opacity: 0.7;
  margin-top: 0.8rem;
}

/* responsive */
@media (max-width: 860px) {
  .container {
    padding: 0 1.5rem;
  }
  .navbar {
    flex-direction: column;
    gap: 1rem;
  }
  .nav-links {
    gap: 1.5rem;
  }
  .feature-row,
  .feature-row.reverse {
    flex-direction: column;
    text-align: center;
    padding: 1.8rem;
  }
  .feature-text h3 {
    font-size: 1.6rem;
  }
  .mockup-img {
    max-width: 200px;
  }
  .screenshot-card {
    width: 170px;
  }
  section {
    padding: 3rem 0;
  }
  .banner {
    min-height: 70vh;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  .nav-links {
    gap: 1.2rem;
  }
  .feature-text h3 {
    font-size: 1.4rem;
  }
  .mockup-img {
    max-width: 180px;
  }
}

/* custom scroll */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #0f2a1c;
}
::-webkit-scrollbar-thumb {
  background: #2bc09a;
  border-radius: 12px;
}