:root{
    --primary-color:#fff;
    --secondary-color:#8f8f8f;
    --third-color: #f3f4f6;
    --text-color: #292a2d;
    --accent-color: #666666;

}

.dark-mode {
    --primary-color: #292a2d;
    --secondary-color: #212327;
    --third-color: #404045;
    --text-color: #fff;
    --accent-color: #8f8f8f; 
}


* {
    margin: 0;
    padding: 0;
}

html {
    font-family: cursive, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16pt;
    color: var(--text-color);
}

body {
    position: relative;
    min-height: 100vh;
    padding: 10px;
    background-color: var(--primary-color);
    
    display: flex;
    flex-direction: column;
    align-items: center;

}

body > h1 {
    margin-top: 100px;
    margin-bottom: 20px;
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    color: var(--text-color);
}
#switch-theme-button{
    position: absolute;
    top: 10px;
    right: 10px;

    background: var(--third-color);
    border-radius: 50%;
    padding: 10px;
    border: none;
    cursor: pointer;
}

#switch-theme-button svg:last-child{
    display: none;
}

.dark-mode #switch-theme-button svg:first-child{
    display: none;
}

.dark-mode #switch-theme-button svg:last-child{
    display: block;
    fill: var(--text-color);
}


#wrapper {
    width: 700px;
    max-width: 100%;

    display: flex;
    flex-direction: column;
    gap: 10px;
}

form{
    position: relative;
}

#input-text{
    box-sizing: border-box;
    width: 100%;
    border-radius: 1000px;
    padding: 12px 20px;

    background: none;
    border: 2px solid var(--third-color);
    font: inherit;
    color: var(--text-color);
    caret-color: brown;
}

#add-button {
    position: absolute;
    top: 0;
    right: 0;

    background-color: var(--third-color);
    border: none;
    border-radius: 1000px;
    color: var(--text-color);
    cursor: pointer;
    font: inherit;
    height: 100%;
    padding: 0 20px;

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

#add-button:hover svg{
    fill: rgb(169, 165, 192);
    transition: 200ms ease;
}

.todo {
    background-color: var(--third-color);
    border-radius: 15px;
    margin-bottom: 10px;
    padding: 0px 16px;

    display: flex;
    align-items: center;
    gap: 10px;
    
}

input[type="checkbox"] {
    display: none;
}

input[type="checkbox"]:checked ~ .todo-text{
    text-decoration: line-through;
    color: var(--accent-color);
}

.todo-text {
    flex-grow: 1;
    padding: 15px;
    padding-right: 0;
    transition: 1000ms ease;
    word-break: break-all;
    color: var(--text-color);
}   

.custom-checkbox{
    border: 2px solid var(--text-color);
    border-radius: 50px;
    min-height: 20px;
    min-width: 20px;

    display: flex;
    justify-content: center;
    align-items: center;
    transition: 200ms ease;

    flex-shrink: 0;
    cursor: pointer;
}

.custom-checkbox svg{
    fill: none;
}

input[type="checkbox"]:checked ~ .custom-checkbox{
    background-color: var(--secondary-color);
}

input[type="checkbox"]:checked ~ .custom-checkbox svg{
    fill: var(--text-color);
}

.delete-button {
    padding: 3px;
    background: none;
    border: none;
    cursor: pointer;

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

.delete-button:hover  svg{
    fill: red;
}

@media (max-width: 500px){
    html {
        font-size: 12pt;
    }

    #add-button {
        position: unset;
        width: 100%;
        margin-top: 10px;
        padding: 15px;
        height: auto;
    }

    h1{
        margin-top: 50px;
        font-size: 15vw;
    }
}