html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}


/* HERO */
.hero-section {
    height: 90vh;
    background: linear-gradient(rgba(0, 123, 191, 0.75), rgba(173, 216, 230, 0.85)), url('/images/LabImage.jpg');
    background-size: cover;
    background-position: center;
    color: #ffffff;
}

.overlay {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 1.2rem;
    margin: 15px 0 25px;
    color: #e6f7ff;
}

.hero-buttons .btn {
    margin: 5px;
    padding: 10px 25px;
    border-radius: 30px;
}

/* FEATURES */
.features-section {
    padding: 60px 0;
    background-color: #f0f9ff;
}

.feature-box {
    padding: 20px;
}

.icon {
    font-size: 40px;
    margin-bottom: 10px;
    color: #0077b6;
}

/* INFO */
.info-section {
    background: #caf0f8;
    color: #023e8a;
    padding: 50px 20px;
}

/* FOOTER */
.footer {
    background: #0077b6;
    color: #e6f7ff;
    padding: 15px;
}
.site-footer {
    position: relative;
    bottom: 0;
    width: 100%;
    background: white;
    color: black;
    text-align: center;
    padding: 10px 0;
}
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

footer {
    margin-top: auto;
}