:root {
  --bs-primary: #1f2937;
  --bs-secondary: #d62929;
  --bs-body-bg: #ffffff;
  --bs-body-color: #111827;
}

.btn-primary {
  background-color: var(--bs-secondary);
  border-color: var(--bs-secondary);
  color: #ffffff;
  transition: ease-in-out 0.2s;
}

.btn-primary:hover {
  background-color: #374151;
  color: #ffffff !important;
  transform: scale(1.05);
}

.hero-section {
  position: relative;
  background-image: url('/img/placeholder4.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 50vh;
  display: flex;
  align-items: center;
  z-index: 1;
}
.hero-section::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 2;
}
.hero-section .container {
  position: relative;
  z-index: 3;
}
.hero-section h1,
.hero-section p {
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.8);
}
#home {
  scroll-margin-top: 60px;
}
#about {
  background-color: #f3f4f6;
}
#service {
  scroll-margin-top: 60px;
  background-color: 	#f3f4f6;
}
.info-card {
  transition: ease-in-out 0.2s;
}
.info-card:hover {
  transform: scale(1.10);
}
#oss {
  scroll-margin-top: 60px;
  background-color: #f3f4f6;
}
#project {
  scroll-margin-top: 60px;
  background-color: #f3f4f6;
}
#contact {
  scroll-margin-top: 60px;
  background-color: #40aef3;
  color: white;
}
#message {
  scroll-margin-top: 90px;
}
.contact-section {
  position: relative;
  background-image: url('/img/placeholder5.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 60vh;
  display: flex;
  align-items: center;
  z-index: 1;
}
.contact-section::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 2;
}
.contact-section .container {
  position: relative;
  z-index: 3;
}
.contact-section h1,
.contact-section p {
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.8);
}

.blur-box {
  background: rgba(0, 0, 0, 0.2); /* transparent white */
  backdrop-filter: blur(10px);          /* blur the background */
  -webkit-backdrop-filter: blur(10px);  /* Safari support */
  padding: 20px;
  border-radius: 10px;
  color: #fff; /* white text */
  max-width: 800px;
  margin: auto;
}