@import url("https://fonts.googleapis.com/css2?family=Alegreya:ital,wght@0,400..900;1,400..900&family=Noto+Serif+TC:wght@200..900&display=swap");

html,
body {
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: none;
    background: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-serif);
    font-size: var(--font-size-base);
    line-height: 1.4;
    overflow: unset;
    scroll-behavior: auto;
    text-rendering: optimizeLegibility;
    text-size-adjust: none;
}

/* Text */
.txt-small {
    font-size: 0.8rem;
}

.txt-medium {
    font-size: 1rem;
}

.txt-large {
    font-size: 1.4rem;
}

.txt-x-large {
    font-size: 1.8rem;
}

.txt-xx-large {
    font-size: 2.4rem;
}

.txt-small--responsive {
    font-size: var(--font-small-responsive);
}

.txt-medium--responsive {
    font-size: var(--font-medium-responsive);
}

.txt-large--responsive {
    font-size: var(--font-large-responsive);
}

.txt-x-large--responsive {
    font-size: var(--font-x-large-responsive);
}

.txt-align-center {
    text-align: center;
}

.txt-align-start {
    text-align: start;
}

.txt-align-end {
    text-align: end;
}

.txt-ink {
    color: var(--color-ink);
}

.txt-reversed {
    color: var(--color-ink-reversed);
}

.txt-negative {
    color: var(--color-negative);
}

.txt-subtle {
    color: var(--color-subtle-dark);
}

.txt-undecorated {
    text-decoration: none;
}

.txt-tight-lines {
    line-height: 1.2;
}

.txt-normal {
    font-weight: 400;
    font-style: normal;
}

.txt-nowrap {
    white-space: nowrap;
}

.txt-uppercase {
    text-transform: uppercase;
}

/* Flexbox and Grid */
.justify-end {
    justify-content: end;
}

.justify-start {
    justify-content: start;
}

.justify-center {
    justify-content: center;
}

.justify-space-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.align-start {
    align-items: start;
}

.align-end {
    align-items: end;
}

.align-self-start {
    align-self: start;
}

.contain {
    contain: inline-size;
}

.flex {
    display: flex;
}

.flex-inline {
    display: inline-flex;
}

.flex-column {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-item-grow {
    flex-grow: 1;
}

.flex-item-shrink {
    flex-shrink: 1;
}

.flex-item-no-shrink {
    flex-shrink: 0;
}

.flex-item-justify-start {
    margin-inline-end: auto;
}

.flex-item-justify-end {
    margin-inline-start: auto;
}

.gap {
    column-gap: var(--column-gap, var(--inline-space));
    row-gap: var(--row-gap, var(--block-space));
}

.gap-half {
    column-gap: var(--inline-space-half);
    row-gap: var(--block-space-half);
}

/* Sizing */
.full-width {
    inline-size: 100%;
}

.min-width {
    min-inline-size: 0;
}

.half-width {
    inline-size: 50%;
}

.max-width {
    max-inline-size: 100%;
}

.min-content {
    inline-size: min-content;
}

.max-inline-size {
    max-inline-size: 100%;
}

/* Overflow */
.overflow-x {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
}

.overflow-y {
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}

.overflow-clip {
    text-overflow: clip;
    white-space: nowrap;
    overflow: hidden;
}

.overflow-ellipsis {
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.overflow-hide-scrollbar::-webkit-scrollbar {
    @media (pointer: course) {
        display: none;
    }
}

.overflow-line-clamp {
    -webkit-line-clamp: var(--lines, 2);
    -webkit-box-orient: vertical;
    display: -webkit-box;
    overflow: hidden;
    text-overflow: clip;
    white-space: normal;
}

/* Padding */
.pad {
    padding: var(--block-space) var(--inline-space);
}

.pad-double {
    padding: var(--block-space-double) var(--inline-space-double);
}

.pad-block {
    padding-block: var(--block-space);
}

.pad-block-start {
    padding-block-start: var(--block-space);
}

.pad-block-end {
    padding-block-end: var(--block-space);
}

.pad-block-half {
    padding-block: var(--block-space-half);
}

.pad-block-start-half {
    padding-block-start: var(--block-space-half);
}

.pad-inline {
    padding-inline: var(--inline-space);
}

.pad-inline-start {
    padding-inline-start: var(--inline-space);
}

.pad-inline-end {
    padding-inline-end: var(--inline-space);
}

.pad-inline-half {
    padding-inline: var(--inline-space-half);
}

.pad-inline-double {
    padding-inline: var(--inline-space-double);
}

.unpad {
    padding: 0;
}

/* Margins */
.margin {
    margin: var(--block-space) var(--inline-space);
}

.margin-block {
    margin-block: var(--block-space);
}

.margin-block-half {
    margin-block: var(--block-space-half);
}

.margin-block-start {
    margin-block-start: var(--block-space);
}

.margin-block-start-half {
    margin-block-start: var(--block-space-half);
}

.margin-block-end {
    margin-block-end: var(--block-space);
}

.margin-block-end-half {
    margin-block-end: var(--block-space-half);
}

.margin-block-double {
    margin-block: var(--block-space-double);
}

.margin-block-end-double {
    margin-block-end: var(--block-space-double);
}

.margin-block-start-double {
    margin-block-start: var(--block-space-double);
}

.margin-inline {
    margin-inline: var(--inline-space);
}

.margin-inline-start {
    margin-inline-start: var(--inline-space);
}

.margin-inline-start-half {
    margin-inline-start: var(--inline-space-half);
}

.margin-inline-end {
    margin-inline-end: var(--inline-space);
}

.margin-inline-end-half {
    margin-inline-end: var(--inline-space-half);
}

.margin-inline-half {
    margin-inline: var(--inline-space-half);
}

.margin-inline-double {
    margin-inline: var(--inline-space-double);
}

.margin-none {
    margin: 0;
}

.margin-none-block {
    margin-block: 0;
}

.margin-none-block-start {
    margin-block-start: 0;
}

.margin-none-block-end {
    margin-block-end: 0;
}

.margin-none-inline {
    margin-inline: 0;
}

.margin-none-inline-start {
    margin-inline-start: 0;
}

.margin-none-inline-end {
    margin-inline-end: 0;
}

.center {
    margin-inline: auto;
}

.center-block {
    margin-block: auto;
}

/* Position */
.position-relative {
    position: relative;
}

.position-sticky {
    position: sticky;
}

/* Fills */
.fill {
    background-color: var(--color-bg);
}

.fill-black {
    background-color: var(--color-ink);
}

.fill-white {
    background-color: var(--color-ink-reversed);
}

.fill-shade {
    background-color: var(--color-subtle-light);
}

.fill-selected {
    background-color: var(--color-selected);
}

.fill-transparent {
    background-color: transparent;
}

.translucent {
    opacity: var(--opacity, 0.5);
}

/* Borders */
.border {
    border: var(--border-size, 1px) solid var(--border-color, var(--color-subtle));
}

.border-top {
    border-top: var(--border-size, 1px) solid var(--border-color, var(--color-subtle));
}

.borderless {
    border: 0;
}

/* Border radius */
.border-radius {
    border-radius: var(--border-radius, 1em);
}

/* Shadows */
.shadow {
    box-shadow:
        0 0 0 1px oklch(var(--lch-always-black) / 0.02),
        0 .2em 1.6em -0.8em oklch(var(--lch-always-black) / 0.2),
        0 .4em 2.4em -1em oklch(var(--lch-always-black) / 0.3),
        0 .4em .8em -1.2em oklch(var(--lch-always-black) / 0.4),
        0 .8em 1.2em -1.6em oklch(var(--lch-always-black) / 0.5),
        0 1.2em 1.6em -2em oklch(var(--lch-always-black) / 0.6);

    @media (prefers-color-scheme: dark) {
        box-shadow:
            0 0 0 1px oklch(var(--lch-always-black) / 0.42),
            0 .2em 1.6em -0.8em oklch(var(--lch-always-black) / 0.6),
            0 .4em 2.4em -1em oklch(var(--lch-always-black) / 0.7),
            0 .4em .8em -1.2em oklch(var(--lch-always-black) / 0.8),
            0 .8em 1.2em -1.6em oklch(var(--lch-always-black) / 0.9),
            0 1.2em 1.6em -2em oklch(var(--lch-always-black) / 1);
    }
}

/* Seperators */
.separator {
    border-inline-start: 1px solid var(--color-subtle-dark);
    display: inline-flex;
    inline-size: 0;
}

/* Spinners */
.spinner {
    position: relative;

    &::before {
        --mask: no-repeat radial-gradient(#000 68%, #0000 71%);
        --dot-size: 1.25em;

        -webkit-mask: var(--mask), var(--mask), var(--mask);
        -webkit-mask-size: 28% 45%;
        animation: submitting 1.3s infinite linear;
        aspect-ratio: 8/5;
        background: currentColor;
        content: "";
        inline-size: var(--dot-size);
        inset: 50% 0.25em;
        margin-block: calc((var(--dot-size) / 3) * -1);
        margin-inline: calc((var(--dot-size) / 2) * -1);
        position: absolute;
    }
}


/* Visibility */
[hidden] {
    display: none;
}

[contents] {
    display: contents;
}


article {
    text-align: start;
}