:root {
    /* --light-color: #F6F0ED; */
    --light-color: #cad2c5;
    --dark-color: #11232D;
    --shadow-color: rgba(17, 35, 45, 0.3);
    --border-color: #b6c0b3;

    /* --dominant-color: #cad2c5; */
    --primary-color: #588157;
    --primary-color--lighter: #a3b18a;
    --primary-color--darker: #3a5a40;
    --secondary-color: #bc4749;

    /*  */
    --info-color: #77BEF0;
    --success-color: #74c69d;
    --warning-color: #f8b500;
    --danger-color: #ee6352;

    --page-end-height: 4rem;

    /* index level */
    --notification-index-level: 10000;
    --dialog-index-level: 100;

    /*  */
    --notification-duration: 5000;

    /* max line */
    --ellipsis-default-max-line: 2;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: var(--dark-color);
    background-color: var(--light-color);
}

/* common elements/classes */

button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: .25rem;
    background-color: var(--primary-color);
    color: var(--light-color);
    cursor: pointer;
    box-shadow: 0 .25rem .5rem var(--shadow-color);
}

h1 {
    background-color: transparent;
    text-transform: uppercase;
    font-size: 200%;
}

.ellipsis {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: var(--max-line, var(--ellipsis-default-max-line));
    line-clamp: var(--max-line, var(--ellipsis-default-max-line));
    word-break: break-all;
    text-overflow: ellipsis;
    overflow: hidden;
}

/* -- close button */
.close-btn {
    width: 1rem;
    padding: 0;
    cursor: pointer;
    box-shadow: none;
    margin-left: 1rem;
    background: transparent;

    span.close-mark {
        background-color: transparent;
        transform: scale(1.5) translate(-25%, -35%) rotate(135deg);
        position: absolute;
        top: 50%;
        left: 50%;
        color: var(--light-color);
        line-height: 0.6;
    }

    &:hover {
        opacity: .8;
    }
}

/* -- logo */
.logo {
    background-color: transparent;
}

/*  */

main {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100vh;
}

header,
footer {
    user-select: none;
    width: 100%;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    background-color: var(--primary-color--lighter);
    color: var(--dark-color)
}

header {
    background-color: var(--primary-color--lighter);
    box-shadow: 0 .5rem .5rem 1rem rgba(0, 0, 0, 0.4);
    height: var(--page-end-height);

    h1 {
        letter-spacing: 0.5rem;
    }
}

#content {
    flex: 1;
    padding: 1rem 2rem;
    width: 100%;
    overflow: auto;
    max-height: calc(100dvh - var(--page-end-height) * 1.4);
}

footer {
    height: calc(var(--page-end-height) * 0.4);
    justify-content: center;
}

.task {
    background-color: var(--primary-color--lighter);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: .5rem;
    box-shadow: .25rem .25rem .75rem rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: flex-start;
    overflow: visible;
    position: relative;

    .task__checkmark {
        position: absolute;
        top: 1rem;
        left: 1rem;
        height: 1.5rem;
        width: 1.5rem;
        background-color: var(--light-color);
        border-radius: .25rem;

        &::after {
            content: "";
            position: absolute;
            display: none;
            left: 50%;
            top: 50%;
            width: .5rem;
            height: .75rem;
            border: solid var(--light-color);
            border-width: 0 .25rem .25rem 0;
            transform: translate(-50%, -64%) rotate(45deg);
        }

    }

    input[type="checkbox"] {
        position: absolute;
        opacity: 0;
        cursor: pointer;
        height: 0;
        width: 0;

        &:checked~.task__checkmark {
            background-color: var(--primary-color);

            &::after {
                display: block;
            }
        }

    }

    .task__content {
        background-color: transparent;
        border: none;
        outline: none;
        resize: none;
        width: 100%;
        margin-left: 2rem;

    }

    &:hover {
        cursor: pointer;

        .task__checkmark {
            background-color: var(--light-color);
        }
    }

    .task__tail-controller {
        position: absolute;
        bottom: .5rem;
        right: .5rem;
        background-color: var(--primary-color--darker);
        color: var(--light-color);
        padding: .25rem .5rem;
        border-radius: .25rem;
        font-size: .75rem;
        user-select: none;
    }
}

/* notification */
#notificationQueue {
    position: fixed;
    bottom: var(--page-end-height);
    left: 1rem;
    z-index: var(--notification-index-level);
}

/* TODO: create stack transition here */

.notification--info,
.notification--success,
.notification--warning,
.notification--error,
.notification {
    position: absolute;
    cursor: default;
    left: 0;
    bottom: var(--offset, 0);
    padding: .5rem 1rem;
    min-width: 8rem;
    max-width: 50dvw;
    width: max-content;
    text-align: center;
    border-radius: .25rem;
    background-color: var(--info-color);
    color: var(--dark-color);
    box-shadow: 0.25rem 0.25rem 0.5rem 0 var(--shadow-color);
    align-items: center;
    display: flex;
    transform: translateX(-100%);
    transform-origin: left;
    opacity: 0;
    animation: show 600ms 100ms ease-in-out forwards;

    .notification__message {
        background-color: transparent;
        min-width: 80%;
        flex: 1;

    }
}

.notification--hiding {
    animation: hide--left 600ms ease-in-out forwards;
}

.notification--success {
    background-color: var(--success-color);
    color: var(--dark-color);
}

.notification--warning {
    background-color: var(--warning-color);
    color: var(--dark-color);
}

.notification--error {
    background-color: var(--danger-color);
    color: var(--light-color);
}

/* popup */
dialog.popup,
dialog.popup--large {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 50%;
    max-height: 80%;
    min-height: 32%;
    border: 1px solid var(--border-color);
    border-radius: .5rem;
    box-shadow: 0.25rem .25rem .5rem 0.25rem var(--shadow-color);
    overflow: hidden;
    z-index: var(--dialog-index-level);

    .popup__header,
    .popup__action {
        position: absolute;
        left: 0;
        right: 0;
        height: var(--page-end-height);
        display: flex;
        align-items: center;
        padding: 1rem 2rem;
        word-break: break-word;
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .popup__header {
        border-bottom: 1px solid var(--shadow-color);
        top: 0;
        justify-content: space-between;

        .popup__title {
            flex: 1;
        }
    }

    .popup__action {
        bottom: 0;
        justify-content: end;
        gap: 1rem;
    }

    .popup__content {
        margin: var(--page-end-height) 0;
        overflow: auto;
        max-height: calc(80dvh - var(--page-end-height)*2);
        padding: 1rem 2rem;
    }
}

.popup--large {
    width: 70%;
}

dialog::backdrop {
    background-color: var(--shadow-color);
    opacity: 0.8;
}

@keyframes show {
    100% {
        opacity: 1;
        transform: none;
    }
}

@keyframes hide--top {
    5% {
        transform: translateY(1rem);
    }
    100% {
        opacity: 0;
        transform: none;
    }
}

@keyframes hide--left {
    5% {
        transform: translateX(1rem);
    }
    100% {
        opacity: 0;
        transform: translateX(-100%);
    }
}