@charset "UTF-8";

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

:root{
    /* CORES PRINCIPAIS */
    --background-color: rgb(234, 253, 255);
    --brand-color: #33a8d6;
    --shape: #dde8ecd8;
    --button-remove: rgb(133, 29, 29);

    /* CORES FIXAS */
    --white: #ffffff;
    --black-shadow-25: #00000025;
    --text-shadow: 0 3px 6px rgba(0, 0, 0, 0.35);

    /* HOVER */
    --button-hover: #035f83;
}

body{
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--background-color);
    padding-bottom: 40px;
}

main{
    max-width: 900px;
    margin: 60px auto;
    background-color: var(--white);
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 4px 18px var(--black-shadow-25);
}

header{
    background: linear-gradient(135deg, #33a8d6, #6fe7ff);
    color: var(--white);
    text-align: center;
    padding: 40px 16px;
    border-radius: 0 0 25px 25px;
    box-shadow: 0 4px 15px var(--black-shadow-25);
}

h1{
    color: var(--white);
    font-size: 2.5em;
    margin-bottom: 12px;
    text-shadow: var(--text-shadow);
}

input{
    width: 80%;
    padding: 15px;
    margin: 5px;
    border: 1px solid var(--brand-color);
    border-radius: 20px;
}

input:focus,
button:focus {
  outline: 2px solid var(--brand-color);
  outline-offset: 3px;
}

button{
    background-color: var(--brand-color);
    color: var(--white);
    font-weight: bold;
    border: 1px solid var(--brand-color);
    border-radius: 50px;
    padding: 10px;
    cursor: pointer;
}

#addbtn:hover{
    background: var(--button-hover);
}

ul{
    list-style: none;
    padding: 0;
    margin-top: 15px;
}

li{
    background: var(--shape);
    margin: 5px 0;
    padding: 10px;
    border-radius: 15px;
    display: flex;
    justify-content: space-between; 
    align-items: center;
    transition: 0.2s ease;
}

li:hover{
    background-color: #cdd8dbd8;
}

li.completed{
    text-decoration: line-through;
    color: var(--black-shadow-25);
}

.remove{
    background-color: var(--button-remove);
    color: var(--white);
    border: none;
    border-radius: 10px;
    padding: 6px 10px;
    cursor: pointer;
}

.remove:hover{
    opacity: 0.8;
}

footer {
    text-align: center;
    margin-top: 40px;
    color: var(--brand-color);
    font-weight:bolder;
}
/* RESPONSIVIDADE */
@media (max-width: 500px) {
    input {
        width: 100%;
        margin-bottom: 10px;
    }

    button {
        width: 100%;
        margin-top: 10px;
    }

    li {
        flex-direction: column;
        gap: 10px;
    }
}