:root {
/* Vibrant Light Mode Colors */
--background-light: #e2e8f0;
--text-light: #2d3748;
--header-background-light: #a0aec0;
--button-background-light: #718096;
--button-background-hover-light: #4a5568;
--border-color-light: #4a5568;
--marked-bg-color: #a3be8c;
--marked-text-color: #2e3440;

/* Dark Mode Colors (Nord Theme) */
--background-dark: #2e3440;
--text-dark: #d8dee9;
--header-background-dark: #4c566a;
--button-background-dark: #5e81ac;
--button-background-hover-dark: #4c6699;
--border-color-dark: #d8dee9;

}

* {
    margin: 0;
    padding: 0;
}
/* Default Light Mode */
body {
    background-color: var(--background-light);
    color: var(--text-light);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    font-family: Arial, Helvetica, sans-serif;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    width: 100%;
    background-color: var(--header-background-light);
    color: var(--text-dark);
}

button {
    cursor: pointer;
    padding: 0.5rem 1rem;
    margin: 0.5rem;
    border: none;
    border-radius: 5px;
    background-color: var(--button-background-light);
    color: var(--text-dark);
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--button-background-hover-light);
}

table {
    border-collapse: collapse;
    margin: 1rem 0;
}

table, th, td {
    border: 1px solid var(--border-color-light);
}

th, td {
    width: 150px;
    height: 150px;
    text-align: center;
    vertical-align: middle;
    font-weight: bold;
}

td {
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none; 
    -moz-user-select: none;
    -ms-user-select: none;
}
footer {
    padding: 1rem;
    text-align: center;
}

/* Dark Mode Styles */
body.dark-mode {
    background-color: var(--background-dark);
    color: var(--text-dark);
}

body.dark-mode header {
    background-color: var(--header-background-dark);
}

body.dark-mode table, body.dark-mode th, body.dark-mode td {
    border-color: var(--border-color-dark);
}

body.dark-mode button {
    background-color: var(--button-background-dark);
}

body.dark-mode button:hover {
    background-color: var(--button-background-hover-dark);
}

.marked {
    background-color: var(--marked-bg-color);
    color: var(--marked-text-color);
}

#shareContainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.share-box {
    flex: 0 0 45%; /* This makes it so the boxes will wrap to the next line on smaller screens */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 5px;
    background-color: var(--background-color);
}

#shareContainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 5px;
}

#shareContainer > input {
    flex: 1;
    margin-right: 10px;
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--input-background-color);
}

#shareContainer > button {
    padding: 5px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background-color: var(--button-color);
    color: var(--text-color);
    transition: background-color 0.3s;
}

#shareContainer > button:hover {
    background-color: var(--button-hover-color);
}

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