:root {
    color-scheme: light;
    --ink: #171717;
    --muted: #737373;
    --line: #e5e5e5;
    --soft: #fafafa;
    --white: #fff;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background: var(--white);
    font-synthesis: none;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    background: var(--white);
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--white);
}

html {
    scrollbar-width: thin;
    scrollbar-color: #b8b8b8 transparent;
}

::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    border-radius: 999px;
    background: #b8b8b8;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: #737373;
    background-clip: padding-box;
}

::-webkit-scrollbar-corner {
    background: transparent;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

header {
    display: flex;
    align-items: center;
    gap: 2rem;
    max-width: 1040px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem 1.25rem;
    border-bottom: 1px solid var(--line);
}

.brand {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -.03em;
}

nav {
    display: flex;
    flex: 1;
    gap: 1.25rem;
    color: var(--muted);
    font-size: .9rem;
}

nav a:hover {
    color: var(--ink);
}

header form {
    margin: 0;
}

.sync-progress {
    position: relative;
    width: 100%;
    height: 2px;
    overflow: hidden;
    opacity: 0;
    background: transparent;
    pointer-events: none;
}

.sync-progress.active {
    opacity: 1;
}

.sync-progress-bar {
    position: absolute;
    inset: 0 auto 0 0;
    width: 35%;
    background: var(--ink);
    transform: translateX(-100%);
}

.sync-progress.active .sync-progress-bar {
    animation: sync-progress 1.25s ease-in-out infinite;
}

@keyframes sync-progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(390%); }
}

@media (prefers-reduced-motion: reduce) {
    .sync-progress.active .sync-progress-bar {
        animation: none;
        transform: translateX(185%);
    }
}

main {
    width: min(100% - 3rem, 1040px);
    margin: 0 auto;
    padding: 4rem 0 5rem;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: .6rem;
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    letter-spacing: -.065em;
    line-height: 1.05;
}

h2 {
    font-size: 1.05rem;
    letter-spacing: -.025em;
}

.heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.repository-actions {
    display: flex;
    align-items: end;
    gap: .75rem;
    flex-shrink: 0;
}

.repository-actions form {
    display: flex;
    align-items: end;
    gap: .55rem;
}

.repository-search-row {
    display: flex;
    align-items: center;
    gap: .55rem;
    width: 100%;
    margin-bottom: 1.5rem;
}

.repository-search {
    display: flex;
    flex: 1;
}

.repository-search input {
    width: 100%;
}

.random-repository {
    display: grid;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 7px;
    color: var(--ink);
    background: var(--white);
    font-size: 1.25rem;
    line-height: 1;
    text-decoration: none;
}

.random-repository:hover {
    border-color: var(--ink);
    color: var(--white);
    background: var(--ink);
}

.repository-actions select {
    min-width: 150px;
}

.repository-actions .direction-toggle {
    display: grid;
    width: 42px;
    height: 42px;
    padding: 0;
    place-items: center;
    border-color: var(--line);
    color: var(--ink);
    background: var(--white);
    font-size: 1.1rem;
    line-height: 1;
}

.repository-actions .direction-toggle:hover {
    border-color: var(--ink);
    color: var(--white);
    background: var(--ink);
}

.sort-label {
    display: flex;
    align-items: center;
    gap: .55rem;
    min-width: 0;
    white-space: nowrap;
}

select {
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: .62rem .8rem;
    color: var(--ink);
    background: var(--white);
    font: inherit;
}

.heading-copy {
    min-width: 0;
}

.heading h1 {
    margin-bottom: .45rem;
}

.subtitle {
    margin-bottom: 0;
    color: var(--muted);
    font-size: .9rem;
    line-height: 1.5;
}

button,
input,
.button {
    font: inherit;
}

.button {
    display: inline-block;
    border: 1px solid var(--ink);
    border-radius: 7px;
    padding: .62rem 1rem;
    color: var(--white);
    background: var(--ink);
    text-decoration: none;
    cursor: pointer;
}

.button:hover {
    color: var(--ink);
    background: var(--white);
}

button {
    border: 1px solid var(--ink);
    border-radius: 7px;
    padding: .62rem 1rem;
    color: var(--white);
    background: var(--ink);
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
}

button:hover {
    color: var(--ink);
    background: var(--white);
}

header button {
    border-color: var(--line);
    padding: .42rem .8rem;
    color: var(--ink);
    background: var(--white);
    font-size: .82rem;
}

header button:hover {
    border-color: var(--white);
    color: var(--white);
    background: var(--ink);
}

.brand span {
    color: var(--muted);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.cards article {
    display: flex;
    flex-direction: column;
    min-height: 210px;
    padding: 1.35rem;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--white);
    transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}

.cards article:hover {
    border-color: var(--ink);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .06);
    transform: translateY(-2px);
}

.cards h2 {
    margin-bottom: .7rem;
    overflow-wrap: anywhere;
}

.cards p {
    min-height: 2.8em;
    margin-bottom: 1.4rem;
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.55;
}

.repository-content {
    flex: 1;
}

.repository-footer {
    margin-top: auto;
}

.repository-label-row {
    display: flex;
    align-items: flex-start;
    gap: .45rem;
    min-height: 1.4rem;
    padding-bottom: .45rem;
    color: var(--muted);
    font-size: .78rem;
}

.label-heading {
    flex: 0 0 4.8rem;
    padding-top: .18rem;
    color: var(--muted);
    line-height: 1.25;
}

.label-values {
    display: flex;
    flex: 1;
    flex-wrap: wrap;
    gap: .45rem;
    min-width: 0;
}

.repository-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: .45rem 1rem;
    min-height: 1.4rem;
    padding-bottom: .9rem;
    color: var(--muted);
    font-size: .78rem;
}

.repository-meta > span {
    display: inline-flex;
    align-items: center;
    gap: .32rem;
    white-space: nowrap;
}

.meta-icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    flex: 0 0 1em;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    vertical-align: -.15em;
}

.repository-language .meta-icon,
.repository-meta span:nth-child(2) .meta-icon,
.repository-meta span:nth-child(3) .meta-icon {
    fill: currentColor;
    stroke: none;
}

.repository-updated {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: .85rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: .75rem;
}

.repository-note {
    min-height: 0 !important;
    padding: .75rem;
    border-left: 2px solid var(--ink);
    color: var(--ink) !important;
    background: var(--soft);
    white-space: pre-wrap;
}

.repository-label-row .label {
    padding: .18rem .45rem;
    border: 1px solid var(--line);
    border-radius: 5px;
    color: var(--ink);
}

.edit-repository {
    padding: .25rem .55rem;
    border-color: var(--line);
    color: var(--ink);
    background: var(--white);
    font-size: .72rem;
}

.repository-editor {
    min-height: 210px;
}

.repository-editor form {
    width: 100%;
}

textarea {
    width: 100%;
    resize: vertical;
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: .72rem .8rem;
    color: var(--ink);
    background: var(--white);
    font: inherit;
}

.editor-actions {
    display: flex;
    gap: .6rem;
}

.button-secondary {
    border-color: var(--line);
    color: var(--ink);
    background: var(--white);
}

#sync-status {
    min-height: 1.5rem;
    margin: -1rem 0 1.25rem;
    color: var(--muted);
    font-size: .86rem;
}

form {
    display: grid;
    gap: 1rem;
}

label {
    display: grid;
    gap: .45rem;
    color: var(--muted);
    font-size: .86rem;
}

input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: .72rem .8rem;
    color: var(--ink);
    background: var(--white);
    outline: none;
}

input:focus {
    border-color: var(--ink);
    box-shadow: 0 0 0 3px #f0f0f0;
}

.login {
    width: min(100% - 3rem, 400px);
    margin: 10vh auto 0;
    padding: 0;
}

.login h1 {
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.error {
    margin-bottom: 1.25rem;
    color: #8a1c1c;
    font-size: .88rem;
}

.notice {
    color: var(--muted);
}

.back-to-top {
    position: fixed;
    right: 1.5rem;
    bottom: 1.5rem;
    z-index: 10;
    display: grid;
    place-items: center;
    width: 2.6rem;
    height: 2.6rem;
    padding: 0;
    line-height: 1;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--ink);
    background: rgba(255, 255, 255, .92);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity .2s ease, visibility .2s ease, transform .2s ease, background .15s ease;
    text-align: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    color: var(--white);
    background: var(--ink);
}

@media (max-width: 640px) {
    .back-to-top {
        right: 1rem;
        bottom: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .back-to-top {
        transition: none;
    }
}

@media (max-width: 640px) {
    header {
        flex-wrap: wrap;
        gap: 1rem;
        padding: 1.1rem 1rem;
    }

    nav {
        order: 3;
        flex-basis: 100%;
    }

    main {
        width: min(100% - 2rem, 1040px);
        padding-top: 2.5rem;
    }

    .heading {
        align-items: start;
        flex-direction: column;
    }

    .repository-actions {
        align-items: stretch;
        width: 100%;
    }

    .repository-actions form {
        flex: 1;
    }
}