:root {
    --bg: #fbfaf8;
    --fg: #1f2328;
    --muted: #656d76;
    --line: #d8dee4;
    --accent: #0b62c4;
    --panel: #f2f0ec;
    --code-bg: #f3f2ef;
    --hl-comment: #6e7781;
    --hl-keyword: #cf222e;
    --hl-string: #0a3069;
    --hl-number: #0550ae;
    --hl-function: #8250df;
    --hl-type: #953800;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #16181c;
        --fg: #e6e8eb;
        --muted: #9aa3ad;
        --line: #30363d;
        --accent: #6cb6ff;
        --panel: #1d2026;
        --code-bg: #1f232a;
        --hl-comment: #8b949e;
        --hl-keyword: #ff7b72;
        --hl-string: #a5d6ff;
        --hl-number: #79c0ff;
        --hl-function: #d2a8ff;
        --hl-type: #ffa657;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }

.top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    padding-top: calc(0.5rem + env(safe-area-inset-top, 0px));
    border-bottom: 1px solid var(--line);
    background: var(--panel);
}

.brand { font-weight: 600; color: var(--fg); text-decoration: none; }

.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }

.nav-button {
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.nav-toggle:focus-visible + .top .nav-button { outline: 2px solid var(--accent); }

.shell { display: flex; align-items: flex-start; }

.tree {
    flex: 0 0 16rem;
    padding: 1rem;
    border-right: 1px solid var(--line);
    min-height: calc(100vh - 3rem);
    font-size: 0.95rem;
}

.tree ul { list-style: none; margin: 0; padding: 0; }
.tree ul ul { padding-left: 1rem; }
.tree li { margin: 0.15rem 0; }
.tree a { color: var(--fg); text-decoration: none; }
.tree a:hover { color: var(--accent); }
.tree a[aria-current="page"] { font-weight: 600; color: var(--accent); }
.tree a.group { color: var(--muted); }
.tree .lock { font-size: 0.8em; margin-left: 0.25rem; }

main {
    flex: 1 1 auto;
    min-width: 0;
    padding: 1rem 2rem 3rem;
    max-width: 52rem;
}

.page img { max-width: 100%; height: auto; }

.page table {
    display: block;
    overflow-x: auto;
    border-collapse: collapse;
    margin: 1rem 0;
}

.page th, .page td { border: 1px solid var(--line); padding: 0.35rem 0.6rem; text-align: left; }
.page th { background: var(--panel); }

.page code { background: var(--code-bg); padding: 0.1em 0.3em; border-radius: 3px; font-size: 0.9em; }

.page pre {
    background: var(--code-bg);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    overflow-x: auto;
    line-height: 1.45;
}

.page pre code { background: none; padding: 0; }
.page pre.mermaid { background: none; text-align: center; }

.page ul:has(> li > input[type="checkbox"]) { list-style: none; padding-left: 1.2rem; }
.page li > input[type="checkbox"] { margin: 0 0.4rem 0 -1.2rem; }

.syntax-highlighting .comment { color: var(--hl-comment); font-style: italic; }
.syntax-highlighting .keyword,
.syntax-highlighting .storage { color: var(--hl-keyword); }
.syntax-highlighting .string { color: var(--hl-string); }
.syntax-highlighting .constant { color: var(--hl-number); }
.syntax-highlighting .entity.name.function,
.syntax-highlighting .support.function { color: var(--hl-function); }
.syntax-highlighting .entity.name.type,
.syntax-highlighting .support.type { color: var(--hl-type); }

.actions {
    margin-left: auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}
.actions form { margin: 0; }
.actions button {
    background: none;
    border: 0;
    padding: 0;
    color: var(--accent);
    font: inherit;
    text-decoration: underline;
    cursor: pointer;
}

button, input, textarea { font: inherit; color: inherit; }
input[type="password"], input[type="search"], input:not([type]), textarea {
    width: 100%;
    padding: 0.5rem 0.6rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--bg);
}
textarea {
    min-height: 50vh;
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 0.95rem;
}
#custom-css { min-height: 12rem; }
label { display: block; margin: 0.5rem 0; }
label.check { display: flex; align-items: center; gap: 0.5rem; }
.buttons { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; margin-top: 1rem; }
.buttons button, .tabs button {
    padding: 0.45rem 1rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--panel);
    cursor: pointer;
}
.buttons button[type="submit"] { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.hint { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0; }
.error { color: var(--hl-keyword); }
.status { color: var(--muted); }
.panel { max-width: 40rem; margin-bottom: 2rem; }
.login { max-width: 22rem; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 0 1rem; }
.tabs { display: flex; gap: 0.25rem; margin: 1rem 0 0.5rem; }
.tabs .spacer { flex: 1; }
.tabs button[aria-selected="true"] { border-color: var(--accent); color: var(--accent); }
.preview { min-height: 50vh; border: 1px dashed var(--line); border-radius: 6px; padding: 0 1rem; }

dialog {
    width: min(32rem, calc(100vw - 2rem));
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--bg);
    color: var(--fg);
}
dialog::backdrop { background: rgb(0 0 0 / 0.4); }
.picker ul { list-style: none; padding: 0; margin: 0.75rem 0 0; max-height: 50vh; overflow-y: auto; }
.picker li button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.4rem 0.5rem;
    border: 0;
    border-radius: 4px;
    background: none;
    cursor: pointer;
}
.picker li button:hover, .picker li button:focus-visible { background: var(--panel); }
.picker small { display: block; color: var(--muted); }

.buttons button.danger { border-color: var(--hl-keyword); color: var(--hl-keyword); }
.page-actions { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.confirm { margin-top: 1rem; padding: 0.75rem 1rem; border: 1px solid var(--hl-keyword); border-radius: 6px; }
.confirm ul { margin: 0.5rem 0; }

.uploads { list-style: none; padding: 0; }
.uploads li { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.75rem; padding: 0.35rem 0; }
.uploads li a { overflow-wrap: anywhere; }
.delete-upload {
    margin-left: auto;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--panel);
    cursor: pointer;
}

[hidden] { display: none !important; }

@media (max-width: 800px) {
    .shell { display: block; }
    .tree {
        display: none;
        min-height: 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }
    .nav-toggle:checked ~ .shell .tree { display: block; }
    main { padding: 1rem 1rem 3rem; }
}

@media (min-width: 801px) {
    .nav-button { display: none; }
}