/* Small preview helpers (from original head) */
body { margin: 0; padding: 20px; font-family: system-ui, sans-serif; line-height: 1.5; color: #333; }
img { max-width: 100%; height: auto; }
a { color: #0066cc; }
h1, h2, h3, h4, h5, h6 { margin-top: 0; }
p { margin: 0 0 1em; }

/* --- App styles (merged from original) --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%;
  font-family: Arial, sans-serif;
  background: #e6f0ff;
  color: #003366;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
}
#app {
  width: 100%;
  max-width: 480px;
  height: 100%;
  background: white;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.screen {
  display: none;
  flex-direction: column;
  height: 100%;
  padding: 20px;
  justify-content: space-between;
}
.screen.active { display: flex; }

/* Logo and headings moved from inline styles */
.logo-img { max-width: 20%; height: auto; display: block; margin: 0 auto; }
.welcome-title { text-align: center; }
.centered { text-align: center; }

/* --- Carousel --- */
.carousel-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  margin: 40px 0 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.carousel-track {
  display: flex;
  transition: transform 0.3s ease-in-out;
}
.carousel-slide {
  min-width: 100%;
  max-width: 100%;
  padding: 20px;
  background: #cce0ff;
  border-radius: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
  text-align: center;
  flex-direction: column;
}
.carousel-slide img {
  max-width: 50%;
  max-height: 50px;
  object-fit: contain;
  border-radius: 10px;
  margin-bottom: 15px;
}
.carousel-indicators {
  display: flex;
  justify-content: center;
  margin-top: 10px;
}
.dot {
  height: 12px;
  width: 12px;
  margin: 0 5px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.3s ease;
  cursor: pointer;
}
.dot.active { background-color: #003366; }

/* --- Inputs & Buttons --- */
input[type="tel"], .code-input {
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  border-radius: 10px;
  border: 1px solid #003366;
  font-size: 1rem;
}
#phoneInput { text-align: center; }
.code-inputs {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}
.code-input {
  width: 20%;
  text-align: center;
  font-size: 1.5rem;
  border: 2px solid #003366;
}
button {
  padding: 15px;
  background: #003366;
  color: white;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  margin-top: 20px;
}
.back-btn {
  background: none;
  color: #003366;
  border: none;
  text-align: left;
  margin-bottom: 20px;
  font-size: 1rem;
  cursor: pointer;
}

/* --- Fade-in digits animation --- */
.digit.fade-in {
  opacity: 0;
  animation: fadeIn 1s ease forwards;
}
@keyframes fadeIn { to { opacity: 1; } }

/* --- Responsive adjustments --- */
@media (max-width: 500px) {
  .carousel-slide {
    font-size: 1rem;
    padding: 15px;
  }
  .carousel-slide img {
    max-height: 180px;
  }
}