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

html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

header {
    position: sticky;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.15);
}

header > * {
    width: 12rem;
    display: flex;
    justify-content: center;
}

a, ul {
    display: flex;
    align-items: center;
    gap: 1rem;
}

li {
    list-style-type: none;
}

a {
    text-decoration: none;
    color: inherit;
    gap: 5px;
}

main {
    display: flex;
    flex-direction: column;
    flex: 1;
    align-items: center;
    padding-top: 1.5rem;
    background-color: aliceblue;
}

#cards {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem;
}

.card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    border: 2px solid black;
    border-radius: 1rem;
    background-color: white;
    box-shadow: 4px 4px 6px rgba(0,0,0,0.15);
    transition: transform 0.3s ease-out;
}

.card:hover {
    transform: scale(1.05);
    cursor: pointer;
}

.action {
    display: flex;
    justify-content: flex-end;
    margin-top: auto;
}

.actionButton {
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.actionButton:hover {
    background-color: rgba(211, 211, 211, 0.7);
}

.hidden {
    display: none;
}

#overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

#popup {
    position: fixed;
    top: 50%;
    left: 50%;
    max-width: 40vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border: 2px solid black;
    border-radius: 1rem;
    transform: translate(-50%, -50%);
    z-index: 5;
    background-color: beige;
}

#popup img {
    max-width: 100%;
    height: auto;
    border: 1px solid black;
    border-radius: 0.5rem;
    display: block;
    margin: 0 auto;
}