/* ─── General Reset & Base ─── */
body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  background: #e6f4ff;
  overflow-x: hidden;
}

/* ─── Background Carousel ─── */
.bg-carousel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.bg-carousel img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  filter: blur(3px);
  animation: carousel 25s infinite;
}

.bg-carousel img:nth-child(1) { animation-delay: 0s; }
.bg-carousel img:nth-child(2) { animation-delay: 5s; }
.bg-carousel img:nth-child(3) { animation-delay: 10s; }
.bg-carousel img:nth-child(4) { animation-delay: 15s; }
.bg-carousel img:nth-child(5) { animation-delay: 20s; }

@keyframes carousel {
  0%, 20% { opacity: 0.4; }
  25%, 45% { opacity: 0; }
  100% { opacity: 0; }
}

.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 119, 182, 0.5);
  z-index: -1;
}

/* ─── Navbar ─── */
.navbar {
  background: rgba(0, 119, 182, 0.95) !important;
  backdrop-filter: blur(10px);
  z-index: 1000;
}

/* ─── Hero Section ─── */
.hero {
  position: relative;
  padding-top: 56px;
  min-height: calc(100vh - 56px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1,
.hero p {
  text-shadow: 3px 3px 12px rgba(0, 0, 0, 0.9);
}

/* ─── Buttons ─── */
.btn-info {
  background: #00cfff !important;
  border: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.btn-info:hover {
  background: #009fd4 !important;
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.btn-outline-light {
  transition: all 0.3s ease;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* ─── Features Section ─── */
.features {
  background: rgba(207, 239, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 60px 0;
  position: relative;
}

.card {
  border: none;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 119, 182, 0.3);
}

.card i {
  font-size: 48px;
  color: #0077b6;
}

.card-title {
  color: #0077b6;
  font-weight: bold;
}

.card-text {
  color: #555;
}

/* ─── Footer ─── */
footer {
  background: rgba(0, 119, 182, 0.95);
  backdrop-filter: blur(10px);
  color: #fff;
  position: relative;
}