* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {

    font-family: Inter, sans-serif;
    background: #f6f8fb;
    color: #222;
    line-height: 1.7;

}

nav {

    position: fixed;
    width: 100%;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 20px 10%;

    background: white;

    box-shadow: 0 2px 15px rgba(0, 0, 0, .08);

}

nav ul {

    display: flex;
    list-style: none;
    gap: 30px;

}

nav a {

    text-decoration: none;
    color: #333;

}

header {

    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    text-align: center;

    padding: 100px 10%;

}

h1 {

    font-size: 4rem;

}

h2 {

    margin-bottom: 20px;

}

section {

    max-width: 1100px;
    margin: auto;

    padding: 100px 30px;

}

.cards {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));

    gap: 25px;

}

.card {

    background: white;

    padding: 30px;

    border-radius: 15px;

    box-shadow: 0 8px 25px rgba(0, 0, 0, .05);

    transition: .25s;

}

.card:hover {

    transform: translateY(-5px);

}

.buttons {

    margin-top: 30px;

}

.buttons a {

    display: inline-block;

    margin: 10px;

    padding: 12px 22px;

    background: #2563eb;

    color: white;

    border-radius: 8px;

    text-decoration: none;

}

footer {

    text-align: center;

    padding: 50px;

    background: white;

}

header {
    min-height: 100vh;

    background-image: url("../img/hero.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-overlay {
    width: 100%;
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    background: rgba(0, 0, 0, 0.45);
    /* dark overlay */
    border-radius: 10px;
}

.hero-text {
    color: white;
    text-align: center;
    max-width: 900px;
    padding: 2rem;
}

.hero-text h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
}

.hero-text h2 {
    font-weight: 400;
    margin-bottom: 1rem;
}

.hero-text p {
    font-size: 1.2rem;
}

.profile-picture {

    width: 180px;
    height: 180px;

    object-fit: cover;

    border-radius: 50%;

    border: 4px solid white;

    margin-bottom: 25px;

    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 15px;
}

.video-container iframe {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    border: 0;
}