@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap');

/* GENERAL RESET & TYPOGRAPHY */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    height: 100%;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #ffffff 0%, #ffffff 100%);
    color: #000;
}

body {
    font-weight: 400 !important;
}

/* LAYOUT STRUCTURE */
body {
    display: flex;
    flex-direction: column;
}

.wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

/* HEADER / NAVBAR (optional cleanup if using Tailwind) */
nav a {
    text-decoration: none;
    color: white;
}
nav a:hover {
    text-decoration: underline;
}

/* FOOTER */
footer {
    background-color: #1e3a8a;
    color: white;
    text-align: center;
    padding: 1em 0;
}

/* HERO SECTION */
.bg-hero {
    background-image: url('dna_variants_image_header.jpg');
    background-size: cover;
    background-position: center;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* CONTENT SECTIONS */
.welcome-text, .white-text, .gray-text {
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    animation: fadeIn 1.5s ease-in-out;
    margin: 20px;
}

.welcome-text {
    background: rgba(0, 0, 0, 0.03);
}

.white-text {
    background: rgba(255, 255, 255, 0.6);
}

.gray-text {
    background: rgba(220, 220, 220, 0.3);
}

/* TEXT STYLES */
.welcome-text h1,
.white-text h2,
.gray-text h2 {
    font-size: 2em;
    margin-bottom: 20px;
    color: #19a2f7;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.welcome-text p,
.white-text p,
.gray-text p {
    font-size: 1.2em;
    line-height: 1.7;
    color: #000;
}

/* LINKS */
.text-black {
    color: #000;
    font-weight: bold;
}

/* DROPDOWN (if used) */
.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu {
    display: none;
    position: absolute;
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

/* ANIMATIONS */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}