*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
}

body,
html {
    width: 100%;
    height: 100%;
}

// Theme

:root {
    --bg-500: #ffffff;
    --bg-selected-500: #f8f8f8;
    --bg-highlight-500: #f0f0f0;
    --border-400: #e8e8e8;
    --border-500: #d8d8d8;
    --border-600: #c0c0c0;
    --border-highlight-500: #b0b0b0;
    --border-selected-500: #909090;
    --text-500: #282828;

    --accent-100: #d6ffc2;
    --accent-500: #6cc16c;
    --accent-900: #244624;

    --event-red: hsl(359, 100%, 85%);
    --event-purple: hsl(274, 100%, 85%);
    --event-blue: hsl(241, 100%, 85%);
    --event-yellow: hsl(50, 100%, 85%);
    --event-green: hsl(125, 100%, 85%);
    --event-orange: hsl(25, 100%, 85%);
    --event-lightlightblue: hsl(176, 100%, 85%);
    --event-lightblue: hsl(198, 100%, 85%);

    --bold-on-dark: 300;
}

body.dark-mode {
    --bg-400: hsl(269, 24%, 3%);
    --bg-500: hsl(269, 24%, 7%);

    --bg-selected-500: hsl(276, 56%, 30%);
    --bg-highlight-500: hsl(277, 66%, 35%);

    --border-400: hsl(269, 40%, 45%);
    --border-500: hsl(269, 60%, 30%);
    --border-600: hsl(269, 80%, 35%);
    --border-highlight-500: hsl(269, 80%, 50%);
    --border-selected-500: #b66af6;
    --text-500: #e6cff6;

    --accent-100: hsl(269, 50%, 50%);
    --accent-500: hsl(269, 40%, 70%);
    --accent-900: hsl(269, 30%, 90%);

    --event-red: hsl(359, 40%, 31%);
    --event-purple: hsl(274, 40%, 31%);
    --event-blue: hsl(241, 40%, 31%);
    --event-yellow: hsl(50, 40%, 31%);
    --event-green: hsl(125, 40%, 31%);
    --event-orange: hsl(25, 40%, 31%);
    --event-lightblue: hsl(176, 40%, 31%);

    --bold-on-dark: 500;
}

$device-s-width: 900px;

// Elements

a,
a:visited {
    color: var(--text-500);
    font-weight: 400;
}

code {
    font-size: 90%;
}

sup {
    display: inline-block;
    transform: translate(0, -0.25rem);
}

// Headings

$base-font-size: 18px;
$heading-scale: 1.25;

@function pow($number, $exponent) {
    $value: 1;

    @if $exponent > 0 {
        @for $i from 1 through $exponent {
            $value: $value * $number;
        }
    }

    @return $value;
}

@for $i from 1 through 4 {
    h#{$i} {
        margin: 0;

        $factor: pow($heading-scale, 4 - $i);
        font-size: $base-font-size * $factor;
        font-weight: 500;

        &:not(:first-child) {
            padding-top: 0.5rem * $factor;
        }

        line-height: 1;

        display: flex;
        align-items: center;

        gap: 0.5rem;
    }
}

button,
.button {
    display: flex;
    align-items: center;
    justify-content: center;

    gap: 0.25rem;

    color: var(--text-500);

    background: var(--bg-500);
    border: 2px solid var(--border-400);
    border-radius: 0.5rem;

    font: inherit;
    font-weight: 400;

    padding: 0.5rem 1rem;

    cursor: pointer;

    position: relative;

    overflow: hidden;

    &:hover::after {
        content: '';
        position: absolute;

        inset: 0;
        background: #0000000c;

        z-index: 1;
    }

    &.primary {
        background: var(--accent-100);
        border-color: var(--accent-500);

        &:hover::after {
            background: #00000020;
        }
    }

    &.icon {
        padding: 0.5rem;

        width: 2.5rem;
        height: 2.5rem;
    }

    &.flat {
        border: none;
    }

    &.small {
        padding: 0.25rem;
    }
}

.input-combo {
    display: flex;
    // align-items: center;
    justify-content: center;

    height: 3rem;

    background: var(--bg-500);
    border: 2px solid var(--border-400);
    border-radius: 0.5rem;

    font-weight: 400;

    // padding: 0.5rem 0.5rem 0.5rem 1rem;

    user-select: none;
    cursor: pointer;

    position: relative;

    select {
        border: none;
        background: none;
        color: var(--text-500);
        appearance: none;

        font-family: inherit;
        font-size: inherit;
        font-weight: 300;

        height: 100%;
        padding-left: 1rem;
        padding-right: 3rem;

        width: 100%;
    }

    .icon {
        position: absolute;
        right: 0;

        height: 100%;
        width: calc(3rem - 4px);

        display: grid;
        place-content: center;

        pointer-events: none;
    }
}

// Components

.logo {
    display: flex;
    align-items: center;

    & > img {
        max-height: 2.5rem;

        body.dark-mode & {
            filter: hue-rotate(135deg) brightness(1.1);
        }
    }

    gap: 0.25rem;
}

.popup-container {
    position: absolute;
    inset: 0;

    z-index: 10;

    background: #00000099;

    max-width: 100%;

    .popup-wrapper {
        max-width: 100%;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);

        padding: 1rem;

        .popup {
            @extend .panel;

            // position: absolute;
            // top: 50%;
            // left: 50%;
            // transform: translate(-50%, -50%);

            display: flex;
            flex-direction: column;
            gap: 1rem;

            box-shadow: 0 0 1.5rem #00000033;

            .header {
                display: flex;
                align-items: center;
                justify-content: space-between;

                user-select: none;

                .title {
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;

                    font-size: 24px;
                }
            }

            .content {
                @extend .text-block;

                width: 60ch;
                max-width: 100%;
                height: fit-content;
                max-height: 60vh;

                overflow-y: auto;

                padding-bottom: 3rem;
            }

            max-width: 100%;
        }
    }
}

.compound {
    display: flex;

    .material-symbols-outlined {
        font-size: 20px;
    }

    button,
    .button {
        border-radius: 0;
        border-right: none;

        padding-left: 0.75rem;
        padding-right: 0.75rem;

        height: 2.5rem;

        &:first-child {
            padding-left: 1rem;

            border-top-left-radius: 0.5rem;
            border-bottom-left-radius: 0.5rem;
        }

        &:last-child {
            padding-right: 1rem;

            border-top-right-radius: 0.5rem;
            border-bottom-right-radius: 0.5rem;
            border: 2px solid var(--border-400);
        }

        &.radio {
            &.selected {
                background: var(--accent-100);
                border-color: var(--accent-500);

                & + .radio {
                    border-left-color: var(--accent-500);
                }

                &:hover::after {
                    background: #00000018;
                }
            }

            &.icon {
                padding: 0 0.5rem;
            }
        }
    }
}

// Extension Classes

.panel {
    background: var(--bg-500);
    border: 1px solid var(--border-500);
    border-radius: 1rem;
    padding: 1rem;
}

.text-block {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;

    p {
        line-height: 1.5;

        .material-symbols-outlined {
            font-size: 18px;
            vertical-align: text-top;
        }
    }

    ul {
        padding: 0.5rem 0 0.5rem 1.5rem;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
}

// Structure

body {
    background: var(--bg-400);
    color: var(--text-500);

    font-weight: 300;
    font-family: 'Inter', sans-serif;

    position: relative;
}

.toolbar {
    @extend .panel;

    padding: 1rem 0.75rem 1rem 1rem;

    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--border-500);

    height: 4rem;

    display: flex;
    align-items: center;
    justify-content: space-between;

    .option-group {
        display: flex;
        align-items: center;

        gap: 0.75rem;

        @media screen and (max-width: $device-s-width), (pointer: coarse) {
            display: none;
        }
    }
}

.option-bar {
    @extend .panel;

    padding: 0.5rem;

    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--border-500);

    height: 4rem;

    display: none;
    align-items: center;
    justify-content: center;

    overflow-y: hidden;
    overflow-x: auto;
    max-width: 100%;

    gap: 0.5rem;

    @media screen and (max-width: $device-s-width), (pointer: coarse) {
        display: flex;
    }

    .option-group {
        display: flex;
        align-items: center;

        gap: 0.75rem;
    }
}

.content {
    height: calc(100vh - 4rem);
    @media screen and (max-width: $device-s-width), (pointer: coarse) {
        height: calc(100vh - 8rem);
    }

    .course-view {
        padding: 1rem;

        display: flex;
        flex-direction: column;
        align-items: center;

        height: 100%;

        overflow-y: scroll;

        text-align: center;

        gap: 1rem;

        .no-courses-warning {
            width: 100%;

            display: flex;
            flex-direction: column;
            gap: 1rem;
            align-items: center;

            p {
                text-align: center;
            }
        }

        .wrap-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(30ch, 1fr));

            gap: 1rem;

            width: 100%;
            max-width: 1200px;

            .course {
                @extend .panel;

                display: flex;
                flex-direction: column;

                gap: 0.25rem;

                flex-grow: 1;

                position: relative;

                cursor: pointer;

                &.selected {
                    background: var(--bg-selected-500);

                    &::after {
                        content: '';
                        position: absolute;
                        inset: -1px;
                        border-radius: 1rem;

                        border: 3px solid var(--border-selected-500);
                    }
                }

                &.highlight {
                    background: var(--bg-highlight-500);
                    border-color: var(--border-highlight-500);
                }

                .title {
                    font-size: 24px;
                }

                .docenti {
                    font-size: 16px;
                }
                .events {
                    font-size: 18px;
                }
            }
        }
    }

    .schedule-view {
        height: 100%;
        width: 100%;
        max-width: 57rem;
        margin: auto;

        padding: 1rem 0.5rem;

        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;

        .no-courses-warning {
            width: 100%;

            display: flex;
            flex-direction: column;
            gap: 1rem;
            align-items: center;

            p {
                text-align: center;
            }
        }
        .schedule-card {
            width: 100%;

            .grid {
                width: 100%;
                display: grid;

                border: 1px solid var(--border-600);
                border-radius: 10px 10px 0 0;

                @media screen and (max-width: $device-s-width),
                    (pointer: coarse) {
                    font-size: 12px;
                }

                .transpose-button,
                .day-label,
                .time-label {
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    padding: 0.5rem;
                }

                .transpose-button {
                    width: 4rem;
                    height: 3rem;
                }

                .event-block-wrapper {
                    padding: 0.125rem;

                    .event-block {
                        width: 100%;
                        height: 100%;

                        position: relative;

                        .event-wrapper {
                            position: absolute;
                            top: 0%;
                            left: 0%;

                            padding: 0.125rem;

                            .event {
                                width: 100%;
                                height: 100%;

                                display: flex;
                                flex-direction: column;
                                align-items: center;
                                justify-content: center;

                                text-align: center;

                                background: var(--color);
                                border-radius: 10px;
                                font-weight: var(--bold-on-dark);
                            }
                        }
                    }
                }

                &.original {
                    grid-template-columns: auto repeat(5, 1fr);
                    grid-template-rows: min-content repeat(
                            var(--time-slots),
                            1fr
                        );

                    .transpose-button,
                    .day-label {
                        grid-column: var(--position);
                        grid-row: 1;
                    }
                    .time-label {
                        min-height: 5rem;
                        grid-column: 1;
                        grid-row: calc(var(--position) + 2) / span 4;
                    }

                    .day-line {
                        grid-column: var(--position);
                        grid-row: 1/-1;
                        width: 0px;
                        border-right: 1px solid var(--border-500);
                    }
                    .time-line {
                        grid-row: calc(var(--position) + 2);
                        grid-column: 1/-1;
                        height: 0px;
                        border-top: 1px dashed var(--border-500);
                    }

                    .event-block-wrapper {
                        grid-row: calc(var(--time-start) + 2) /
                            calc(var(--time-end) + 2);
                        grid-column: calc(var(--day-position) + 1);

                        .event-block {
                            .event-wrapper {
                                width: calc(100% / var(--of));
                                height: calc(
                                    100% * var(--size) / var(--block-size)
                                );
                                transform: translateX(calc(100% * var(--index)))
                                    translateY(
                                        calc(
                                            100% * var(--relative-start) /
                                                var(--size)
                                        )
                                    );
                            }
                        }
                    }
                }
                &.transposed {
                    grid-template-rows: auto repeat(5, 1fr);
                    grid-template-columns: min-content repeat(
                            var(--time-slots),
                            1fr
                        );

                    .transpose-button,
                    .day-label {
                        grid-row: var(--position);
                        grid-column: 1;
                    }
                    .day-label {
                        min-height: 5rem;
                    }
                    .time-label {
                        grid-row: 1;
                        grid-column: calc(var(--position) + 2) / span 4;
                    }

                    .day-line {
                        grid-row: var(--position);
                        grid-column: 1/-1;
                        height: 0px;
                        border-top: 1px solid var(--border-500);
                    }
                    .time-line {
                        grid-column: calc(var(--position) + 2);
                        grid-row: 1/-1;
                        width: 0px;
                        border-right: 1px dashed var(--border-500);
                    }

                    .event-block-wrapper {
                        grid-column: calc(var(--time-start) + 2) /
                            calc(var(--time-end) + 2);
                        grid-row: calc(var(--day-position) + 1);

                        .event-block {
                            .event-wrapper {
                                height: calc(100% / var(--of));
                                width: calc(
                                    100% * var(--size) / var(--block-size)
                                );
                                transform: translateY(calc(100% * var(--index)))
                                    translateX(
                                        calc(
                                            100% * var(--relative-start) /
                                                var(--size)
                                        )
                                    );
                            }
                        }
                    }
                }
            }

            .legend {
                display: grid;
                grid-template-columns: min-content 1fr;
                border: 1px solid var(--border-600);
                border-radius: 0 0 10px 10px;
                border-top: none;
                padding: 1rem;
                gap: 0.5rem 1rem;
                align-items: center;
                justify-content: center;
                width: 100%;

                .name {
                    width: 100%;
                }

                .color {
                    width: 2rem;
                    height: 1.5rem;
                    background-color: var(--color);
                    border-radius: 10px;
                }
            }
        }
    }
}

.overlay {
    display: flex;
    position: fixed;

    bottom: 3rem;
    right: 3rem;

    // on mobile
    @media screen and (max-width: $device-s-width), (pointer: coarse) {
        bottom: 1rem;
        right: 1rem;
    }

    gap: 0.5rem;

    button {
        width: 3rem;
        height: 3rem;

        border-radius: 100%;

        .material-symbols-outlined {
            font-size: 22px;
        }

        color: var(--accent-900);

        box-shadow: 0 0.25rem 0.75rem #00000033;
    }

    animation: fade-in 150ms ease-in forwards;
}

.menu {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;

    background: var(--bg-500);

    z-index: 10;

    .header {
        height: 4rem;

        padding: 0.75rem 1rem 0.75rem 0.75rem;

        display: flex;
        align-items: center;
        justify-content: space-between;

        border-bottom: 1px solid var(--border-500);

        .option-group {
            display: flex;
            gap: 0.5rem;
        }
    }

    .options {
        padding: 1rem;

        display: grid;
        grid-template-columns: auto 1fr;

        gap: 1rem;

        align-items: center;

        .label {
            font-weight: 400;
        }
    }

    hr {
        position: relative;

        width: calc(100% - 2rem);
        height: 1px;
        left: 1rem;

        background: var(--border-500);
        border: none;
    }

    .help {
        @extend .text-block;

        padding: 1rem 1rem 2.5rem;
    }
}

// not on mobile

@media screen and (min-width: $device-s-width) and (pointer: fine) {
    .mobile {
        display: none;
    }

    .menu {
        display: none;
    }
}

// on mobile

@media screen and (max-width: $device-s-width), (pointer: coarse) {
    .toolbar {
        padding: 0.75rem 1rem 0.75rem 0.75rem;
    }
}

@media print {
    // @page {
    //     size: A4 landscape;
    // }

    .toolbar,
    .menu,
    .overlay {
        display: none;
    }

    .work-week-v-view {
        overflow: visible;
    }
}

@keyframes fade-in {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.fade-out {
    animation: fade-out 150ms ease-in forwards;
}

@keyframes fade-out {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

// Utilities

span.bold {
    font-weight: 400;
}