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

html,
body{
    height :100%;
    weight:100%;
}
html{
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

:root{
    --bg-color:#000000;
    --bg-button-color:#1a1a1a;
    --bg-task-color:#2a2a2a;
    --primary-text-color:#f4f4f4;
    --delete-color:red;

    --nav-padding:15px 30px;
    --section-padding:15px 30px;
    --padding-s:5px;
    --padding-m:10px;
    --padding-l:15px;
    --padding-xl:20px;
    --padding-xxl:30px;

    --border-radius-s:5px;
    --border-radius-m:10px;
    --border-radius-l:15px;
    --border-radius-xl:20px;
    --border-radius-xxl:25px;
}


body{
    background-color: var(--bg-color);
    color: var(--primary-text-color);
}

main{
    height:100%;
    display:flex;
    flex-direction: column;
}

nav{
    padding:var(--nav-padding);
    display:flex;
    align-items: center;
    justify-content: space-between;

    position: sticky;
    top: 0;
    background-color: var(--bg-color);
}

nav button{
    background-color: var(--bg-button-color);
    color: var(--primary-text-color);
    padding: var(--padding-m) var(--padding-l);
    border: none;
    cursor: pointer;
    border-radius:var(--border-radius-m);
}

section{
    flex-grow: 1;
    padding:var(--section-padding);
    display: flex;
    justify-content: space-between;

    gap:var(--padding-xxl)
}

section .task-column{
    background-color: var(--bg-button-color);
    flex-grow: 1;
    padding: var(--padding-m);
     display: flex;
    flex-direction: column;
    gap:var(--padding-l);
    border-radius: var(--border-radius-m);
    transition: all 0.1s cubic-bezier(0.19, 1, 0.22, 1);
}

section .task-column.hover-over{
    border: 2px dashed var(--primary-text-color);
    scale: 1.05;
    
}

section .task-column .heading{
    width:100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--padding-m);
}
section .task-column .task{
    background-color: var(--bg-task-color);
    padding: var(--padding-m);
    border-radius: var(--border-radius-m);
    display:flex;
    flex-direction: column;
    gap:var(--padding-s);
    cursor: grab;
}

section .task-column .task button{
    align-self: flex-end;
    cursor: pointer;
    padding: var(--padding-s) var(--padding-m);
    border-radius: var(--border-radius-s);
    border: none;
    outline: none;
    background-color: var(--delete-color);
    color: var(--primary-text-color);
}

.modal{
    position: fixed;
    top:0;
    left:0;
    height :100vh;
    width:100vw;
    display:none;
    align-items: center;
    justify-content: center;
}
.modal.active{
    display: flex;
}

.modal .bg{
    position: absolute;
    height: 100%;
    width: 100%;
    background-color: rgba(61,61,61,0.404);
    backdrop-filter: blur(5px);
}


.modal .center{
    background-color: var(--bg-button-color);
    padding: var(--border-radius-xxl);
    border-radius: var(--border-radius-m);
    display: flex;
    flex-direction:column;
    gap:var(--padding-m);
    z-index:10;


}

.modal .center input,.modal .center textarea{
    background-color: var(--bg-task-color);
    border: none;
    outline:none;
    color: var(--primary-text-color);
    padding:var(--padding-m);
    border-radius: var(--border-radius-s);
}

.modal .center  button{
    background-color: var(--bg-task-color);
    color: var(--primary-text-color);
    border:none;
    padding:var(--padding-m) var(--padding-l);
    cursor: pointer;
    border-radius: var(--border-radius-m);
    align-self: center;
}