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

body {
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    "Helvetica Neue",
    Helvetica,
    "Noto Sans",
    sans-serif;
  background: #0b2b3b;
  color: #f0f9ff;
  line-height: 1.4;
}

/* main background with image + semi-transparent overlay */
.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-image: url("https://images.pexels.com/photos/1687845/pexels-photo-1687845.jpeg?auto=compress&cs=tinysrgb&w=1600");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.bg-overlay::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(135, 180, 210, 0.45);
  backdrop-filter: brightness(0.98) blur(1px);
  z-index: -1;
}

/* sky blue accent theme */
:root {
  --sky-blue: #5aa9dd;
  --sky-light: #7fc1e6;
  --deep-sky: #3c8dc5;
  --overlay-bg: rgba(18, 35, 48, 0.6);
  --card-bg: rgba(20, 40, 55, 0.7);
}

.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 28px;
}

/* header & navigation */
.site-header {
  padding: 24px 0 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 240, 0.2);
  margin-bottom: 20px;
}

.logo h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff, #b8e1fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.logo p {
  font-size: 0.8rem;
  opacity: 0.8;
  letter-spacing: 0.8px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: #f0fcff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  transition: 0.2s;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}

.nav-links a:hover {
  border-bottom-color: var(--sky-blue);
  color: #ffffff;
}

/* sections common */
section {
  padding: 70px 0 60px;
  scroll-margin-top: 90px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 600;
  margin-bottom: 48px;
  text-align: center;
  position: relative;
  display: inline-block;
  width: auto;
  left: 50%;
  transform: translateX(-50%);
  letter-spacing: -0.3px;
}
.section-title:after {
  content: "";
  position: absolute;
  bottom: -12px;
  left: 20%;
  width: 60%;
  height: 3px;
  background: var(--sky-blue);
  border-radius: 4px;
}

/* banner area: image + centered caption */
.banner-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.banner-graphic {
  flex: 0.4;
  min-width: 260px;
  text-align: center;
}

.banner-graphic img {
  max-width: 100%;
  border-radius: 42px;
  box-shadow: 0 25px 45px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.banner-graphic img:hover {
  transform: scale(1.01);
}

.banner-quote {
  flex: 1;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border-radius: 40px;
  padding: 2rem 2rem;
  border: 1px solid rgba(90, 169, 221, 0.4);
}

.banner-quote h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: white;
}

.banner-quote .tagline {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 1rem;
  font-weight: 400;
}

.banner-quote p {
  font-size: 1rem;
  line-height: 1.5;
  color: #eef5ff;
}

/* intro & features: vertical centering split layout */
.features-grid {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.feature-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  background: var(--card-bg);
  backdrop-filter: blur(6px);
  border-radius: 48px;
  padding: 2rem 2rem;
  transition: all 0.2s;
  border: 1px solid rgba(90, 169, 221, 0.3);
}

.feature-text {
  flex: 1.2;
  padding: 1rem 1.5rem;
}

.feature-icon {
  flex: 0.8;
  text-align: center;
  font-size: 3.8rem;
}

.feature-text h3 {
  font-size: 1.9rem;
  margin-bottom: 1rem;
  color: var(--sky-light);
}

.feature-text p {
  font-size: 1.05rem;
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

/* screenshot carousel — 3 items visible, infinite autoplay */
.screenshot-carousel {
  position: relative;
  overflow: hidden;
  padding: 20px 0;
}

.carousel-track-container {
  overflow: hidden;
  margin: 0 -12px;
}

.carousel-track {
  display: flex;
  gap: 24px;
  transition: transform 0.5s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  will-change: transform;
}

.carousel-card {
  flex: 0 0 calc(33.333% - 16px);
  min-width: 0;
  background: rgba(255, 255, 245, 0.1);
  border-radius: 36px;
  backdrop-filter: blur(4px);
  padding: 12px;
  transition: all 0.3s;
  border: 1px solid rgba(90, 169, 221, 0.5);
}

.carousel-card img {
  width: 100%;
  height: auto;
  border-radius: 28px;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
  display: block;
  aspect-ratio: 9 / 19;
  object-fit: cover;
}

.carousel-caption {
  text-align: center;
  margin-top: 12px;
  font-weight: 500;
  font-size: 0.85rem;
  color: #d9ecff;
}

/* carousel controls dots */
.carousel-controls {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  margin-top: 32px;
  align-items: center;
}

.dot-container {
  display: flex;
  gap: 12px;
}

.dot {
  width: 10px;
  height: 10px;
  background-color: rgba(220, 240, 255, 0.5);
  border-radius: 50%;
  cursor: pointer;
  transition: 0.2s;
}

.dot.active {
  background-color: var(--sky-blue);
  width: 26px;
  border-radius: 8px;
}

.ctrl-btn {
  background: rgba(90, 169, 221, 0.3);
  border: none;
  color: white;
  font-size: 1.7rem;
  cursor: pointer;
  width: 44px;
  height: 44px;
  border-radius: 60px;
  transition: 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

.ctrl-btn:hover {
  background: var(--sky-blue);
}

/* footer */
.footer {
  background: rgba(10, 25, 35, 0.85);
  backdrop-filter: blur(10px);
  border-radius: 40px 40px 0 0;
  padding: 48px 28px 32px;
  margin-top: 40px;
  text-align: center;
  border-top: 1px solid rgba(90, 169, 221, 0.4);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.contact-email {
  font-size: 1.3rem;
  background: rgba(90, 169, 221, 0.2);
  padding: 12px 28px;
  border-radius: 60px;
  display: inline-block;
  letter-spacing: 0.3px;
}

.contact-email a {
  color: #b9e2ff;
  text-decoration: none;
  font-weight: 500;
}

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

/* Responsive design */
@media (max-width: 860px) {
  .container {
    padding: 0 20px;
  }
  .site-header {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .nav-links {
    gap: 1.5rem;
    justify-content: center;
  }
  .feature-row {
    flex-direction: column;
    text-align: center;
    padding: 1.8rem;
  }
  .feature-icon {
    order: -1;
    margin-bottom: 12px;
  }
  .banner-area {
    flex-direction: column;
  }
  .banner-quote {
    text-align: center;
  }
  .carousel-card {
    flex: 0 0 calc(100% - 0px);
  }
  .carousel-track {
    gap: 20px;
  }
  .section-title {
    font-size: 2rem;
  }
  .feature-text h3 {
    font-size: 1.6rem;
  }
}

@media (min-width: 861px) and (max-width: 1100px) {
  .carousel-card {
    flex: 0 0 calc(50% - 12px);
  }
}
@media (min-width: 1101px) {
  .carousel-card {
    flex: 0 0 calc(33.333% - 16px);
  }
}

button {
  background: none;
  border: none;
}
a,
button {
  cursor: pointer;
}