:root{
    --primary-color:#2563EB;
    --primary-hover:#1D4ED8;
    --background-color:#F8FAFC;
    --card-color:#FFFFFF;
    --heading-color:#0F172A;
    --text-color:#334155;
    --muted-color:#64748B;
    --border-color:#E2E8F0;
    --edit-color:#7C3AED;
    --delete-color:#DC2626;
    --success-color:#16A34A;
}


*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}


body{
    width: 100%;
    background-color: var(--background-color);
}

body section{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;

}


.todo-container{
    width: 40%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: column;
    gap: 12px;
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 8px;
}

.todo-container h1{
    color: var(--heading-color);
    font-size: 1.5em;
    font-weight: 500;
}

.input-container{
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    flex-direction: column;
}

.input-container input{
width: 100%;
padding: 5px;
cursor: pointer;
color: var(--text-color);
}

.input-container textarea{
    width: 100%;
    padding: 15px;
    color: var(--text-color);
}

.input-container button{
    width: 100%;
    padding: 5px;
    border-color: 1px solid var(--border-color);
    background-color: var(--primary-color);
    color: #FFFFFF;
}

.input-container button:hover{
    background-color: var(--primary-hover);
}

.todo-header{
    width: 100%;
}

.todo-header ul{
    display: flex;
    justify-content:space-between;
    align-items: center;
    width: 100%;
    padding: 8px;
    list-style-type: none;
    gap: 13px;
}

.todo-list{
    display: flex;
    justify-content:space-between;
    align-items: center;
    width: 100%;
    padding: 8px;
    background-color: var(--muted-color);
    color: #FFFFFF;
}

.list-button{
    display: flex;
    justify-content: space-between;
    gap: 8px;
}

.list-button .fa-pen-to-square{
    color: var(--edit-color);
    cursor: pointer;
}

.list-button .fa-trash{
    color: var(--delete-color);
    cursor: pointer;
}

.success-message {
    position: fixed;
    top: 20px;
    right: 20px;

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

    padding: 12px 18px;

    background-color: var(--success-color);
    color: var(--card-color);

    border-radius: 8px;

    font-size: 14px;
    font-weight: 500;

    box-shadow: 0 5px 15px rgba(15, 23, 42, 0.15);

    z-index: 9999;
}

.success-message i {
    font-size: 18px;
}