:root {
    --background-color: #dffdd0;
    --text-color: #303030;
    --border-color: #B5ACF2;
    --button-color: #514EA6;
    --button-hover-bg-color: #010626;
    --button-hover-color: #B5ACF2;
    --correct-bg-color: #87BF60;
    --incorrect-bg-color: #c7313d;
}

* {
    padding:0;
    margin:0;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Roboto Flex', sans-serif;
}

/* Light-Dark Mode toggle */
.light-dark {
    position:absolute;
    top: 10px;
    right: 10px;
}

/* Dark mode */
body.dark-mode {
    background-color: #303030;
    color: #dffdd0;
}
.mission-statement .dark-mode {
    color: #dffdd0;
}

.headerContainer .dark-mode {
    color: #dffdd0;
}

.light-dark .dark-mode {
    background-color: #dffdd0;
    color: #303030;
}

.dropdown-menu .dark-mode {
    background-color: var(--text-color);
    color: var(--background-color);
}

/* Header Container */ 
.headerContainer {
    background-color: var(--button-bg-color);
}

.headerContainer a {
    color: var(--text-color);
    text-decoration: none;
    padding: 10px;
    display: inline-block;
    position: sticky;
    top:0;
    z-index: 1000;
}

.headerContainer a:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--button-hover-color);

}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown a{
    background-color: var(--button-bg-color);
    color: var(--text-color);
    padding: 10px;
    cursor: pointer;
}

.dropdown a:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--button-hover-color);
}

/* dropdown  Geography*/

.dropdown-menu {
    position: absolute;
    border: var(--border-color) solid 2px;
    opacity: 0; /* when using opacity can use transition of the menu instead of just appearring with display:none */
    visibility: hidden;
}

/* dropdown Geography menu anchor links */
.dropdown-menu a {
    display: block;
    padding: 10px;
    background-color: var(--background-color);
    color: var(--text-color);
    text-decoration: none;
    cursor: pointer;
    z-index: 900;
}

.dropdown-menu a:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--button-hover-color);
    cursor: pointer;
}

/* Science Menu 
.dropdown-menu {
    position: absolute;
    border: var(--border-color) solid 2px;
    opacity: 0; /* when using opacity can use transition of the menu instead of just appearring with display:none */


/* dropdown Science menu anchor links */
.dropdown-science-menu a {
    display: block;
    padding: 10px;
    background-color: var(--button-bg-color);
    color: var(--button-color);
    text-decoration: none;
    cursor: pointer;
    z-index: 900;
}

.dropdown-science-menu a:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--button-hover-color);
    cursor: pointer;
}

.show {
    display: block;
    opacity: 1;
    visibility: visible;
}


/* Mission statement Container */ 
.mission-statement {
    padding: 20px;
    text-align: center;
}

.mission-statement h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
    letter-spacing: 5%;
}

.mission-statement p {
    font-size: 1em;
    color: var(--text-color);
    letter-spacing: 5%;
}

/* To-do list Container */ 

.revision-todo {
    padding: 20px;
    text-align: center;
}

/*container*/
.container {
    
}

#alertMessage {
    color: red;
}

#list-container {
    margin-top: 20px;
}

.todo-app h2 {
    margin-bottom: 20px;
}

#input-box {
    padding: 10px;
    width: 200px;
    border-radius: 25px;
    border: var(--border-color) solid 2px;
}

.row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.row button {
    padding: 10px 20px;
    background-color: var(--button-color);
    color: var(--button-hover-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.row button:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--button-hover-color);
}

ul {
    list-style-type: none;
}

ul li {
    padding: 5px;
}

.material-symbols-outlined {
    color: var(--button-color);
    cursor: pointer;
    margin-left: 10px;
    transform: translateY(5px);

}

.material-symbols-outlined:hover {
    color: var(--button-hover-bg-color);
}

ul li.checked {
    text-decoration: line-through;
}