/* SOR browser - light/dark aware, no framework. */

:root {
    --bg: #f7f8fa;
    --surface: #ffffff;
    --border: #dfe3e8;
    --text: #1b1f24;
    --muted: #6b7480;
    --accent: #2f6fd0;
    --accent-soft: #e8f0fc;
    --closed: #a4562a;
    --closed-soft: #fdf1e7;
    --owner: #6d3fbf;
    --institution: #1c7a63;
    --unit: #40566d;
    --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
    --tree-w: 30rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14171c;
        --surface: #1b1f26;
        --border: #2c333d;
        --text: #e4e7ec;
        --muted: #98a2b0;
        --accent: #6aa5f0;
        --accent-soft: #1d2b40;
        --closed: #e0a878;
        --closed-soft: #2e2318;
        --owner: #b795f0;
        --institution: #5fc9ac;
        --unit: #93a7bd;
    }
}

* { box-sizing: border-box; }

html, body {
    height: 100%;
    margin: 0;
}

body {
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.muted { color: var(--muted); }
.warn  { color: var(--closed); }

/* ---------- top bar ---------- */

.topbar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: .6rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex: none;
}

.brand { display: flex; align-items: baseline; gap: .5rem; }
.brand strong { letter-spacing: .06em; }
.brand .muted { font-size: .85em; }

.search { flex: 1; display: flex; position: relative; max-width: 34rem; }

.search input {
    width: 100%;
    padding: .45rem .7rem;
    font: inherit;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
}
.search input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.search button {
    position: absolute;
    right: .3rem; top: 50%;
    transform: translateY(-50%);
    border: 0; background: none;
    color: var(--muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 .35rem;
}

.counts { font-size: .85em; white-space: nowrap; }

/* ---------- layout ---------- */

.split { display: flex; flex: 1; min-height: 0; }

.pane {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    background: var(--surface);
}

.pane-tree { flex: 0 0 var(--tree-w); border-right: 1px solid var(--border); }
.pane-detail { flex: 1; }

.pane-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: .5rem .9rem;
    border-bottom: 1px solid var(--border);
    font-size: .85em;
    font-weight: 600;
    flex: none;
}
/* margin-left:auto beats justify-content, so the count keeps to the right edge and the toggle sits
   next to the title rather than being spread across the whole head. */
.pane-head .muted { font-weight: 400; margin-left: auto; }

.toggle {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-weight: 400;
    color: var(--muted);
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
}
.toggle:hover { color: var(--text); }
.toggle input { margin: 0; accent-color: var(--accent); cursor: pointer; }

/* ---------- copying a branch ---------- */

.chip {
    flex: none;
    font: inherit;
    font-size: .85em;
    padding: .25rem .6rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip span { font-variant-numeric: tabular-nums; opacity: .7; }

.clipbar {
    flex: none;
    display: flex;
    align-items: baseline;
    gap: .5rem;
    padding: .4rem .9rem;
    font-size: .85em;
    background: var(--accent-soft);
    border-bottom: 1px solid var(--border);
}
.clipbar .clip-label { font-weight: 600; color: var(--accent); }
.clipbar .clip-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clipbar .muted { margin-left: auto; white-space: nowrap; }
.clipbar .link {
    flex: none;
    border: 0; background: none; padding: 0;
    font: inherit; color: var(--accent);
    text-decoration: underline;
    cursor: pointer;
}

/* A copy carries its source's name and SorIdentifier, so it needs its own mark in the tree. */
.row .tag {
    flex: none;
    font-size: .72em;
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 0 .3rem;
    border-radius: 3px;
    color: var(--accent);
    background: var(--accent-soft);
}
.row.copy .label { font-style: italic; }
.badge.copy { color: var(--accent); background: var(--accent-soft); border-color: currentColor; }

.paste {
    margin-top: 1.5rem;
    padding: .9rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: var(--accent-soft);
}
.paste-head { font-weight: 600; margin-bottom: .5rem; }
.paste-row { display: flex; align-items: center; gap: .5rem; margin-bottom: .5rem; flex-wrap: wrap; }
.paste-row input[type="date"] {
    font: inherit;
    padding: .3rem .45rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 5px;
}
.paste-error { margin-top: .5rem; }

button.primary {
    background: var(--accent);
    color: var(--surface);
    border-color: var(--accent);
    font-weight: 600;
}
button.danger { color: var(--closed); border-color: currentColor; }

.flash {
    margin-bottom: 1rem;
    padding: .6rem .8rem;
    border-radius: 6px;
    background: var(--accent-soft);
    border: 1px solid var(--accent);
}

.op {
    margin: 1rem 0;
    padding: .8rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}
.op-head { display: flex; align-items: baseline; gap: .5rem; margin-bottom: .5rem; flex-wrap: wrap; }
.op-actions { display: flex; gap: .5rem; margin-top: .6rem; }

.pane-body { overflow: auto; flex: 1; padding: .5rem 0; }
.pane-detail .pane-body { padding: 1.25rem 1.5rem 3rem; }

.gutter {
    flex: none;
    width: 5px;
    cursor: col-resize;
    background: transparent;
}
.gutter:hover, .gutter:focus-visible { background: var(--accent); outline: none; }

/* ---------- tree ---------- */

.tree, .tree ul { list-style: none; margin: 0; padding: 0; }
.tree ul { padding-left: 1.05rem; border-left: 1px solid var(--border); margin-left: .75rem; }

.row {
    display: flex;
    align-items: center;
    gap: .35rem;
    padding: .18rem .9rem .18rem .25rem;
    cursor: default;
    border-radius: 4px;
}
.row:hover { background: var(--bg); }
.row.selected { background: var(--accent-soft); }

.twisty {
    flex: none;
    width: 1.15rem; height: 1.15rem;
    display: grid; place-items: center;
    border: 0; background: none; padding: 0;
    color: var(--muted);
    cursor: pointer;
    font-size: .7rem;
    transition: transform .12s ease;
}
.twisty[hidden] { visibility: hidden; display: grid; }
.twisty.open { transform: rotate(90deg); }
.twisty.busy { animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.label {
    flex: 1;
    min-width: 0;
    text-align: left;
    border: 0; background: none; padding: 0;
    font: inherit; color: inherit;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.label:focus-visible { outline: 2px solid var(--accent); border-radius: 3px; }

.row.closed .label { color: var(--muted); text-decoration: line-through solid; text-decoration-thickness: 1px; }

/* inline-block, not inline: in the search hits a .dot is a plain inline child of the button,
   where width/height on an inline box would be ignored. */
.dot { flex: none; display: inline-block; width: .5rem; height: .5rem; border-radius: 50%; }
.dot.owner { background: var(--owner); }
.dot.institution { background: var(--institution); }
.dot.unit { background: var(--unit); }

.n { flex: none; font-size: .78em; color: var(--muted); font-variant-numeric: tabular-nums; }

.tree-foot { padding: .5rem 1rem; }

.more {
    font: inherit;
    color: var(--accent);
    background: none;
    border: 1px dashed var(--border);
    border-radius: 5px;
    padding: .35rem .7rem;
    cursor: pointer;
    width: 100%;
}
.more:hover { border-color: var(--accent); }
.more[disabled] { color: var(--muted); cursor: default; }

/* ---------- search results in tree pane ---------- */

.hits { list-style: none; margin: 0; padding: 0 .5rem; }
.hit { padding: .35rem .4rem; border-radius: 5px; }
.hit:hover { background: var(--bg); }
.hit button {
    display: block; width: 100%; text-align: left;
    border: 0; background: none; padding: 0; font: inherit; color: inherit; cursor: pointer;
}
.hit .where { font-size: .8em; color: var(--muted); }
.hit mark { background: var(--accent-soft); color: inherit; border-radius: 2px; }

/* ---------- detail pane ---------- */

.empty { color: var(--muted); padding: 2rem 0; max-width: 34rem; }

.crumbs { font-size: .82em; margin-bottom: .5rem; }
.crumbs button {
    border: 0; background: none; padding: 0; font: inherit;
    color: var(--accent); cursor: pointer; text-decoration: underline;
}
.crumbs .sep { color: var(--muted); margin: 0 .35rem; }

.detail-head h1 { font-size: 1.35rem; margin: 0 0 .35rem; line-height: 1.25; }

.badges { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.1rem; }
.badge {
    font-size: .76em;
    padding: .15rem .5rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--muted);
}
.badge.kind-owner { color: var(--owner); border-color: currentColor; }
.badge.kind-institution { color: var(--institution); border-color: currentColor; }
.badge.kind-unit { color: var(--unit); border-color: currentColor; }
.badge.closed { color: var(--closed); background: var(--closed-soft); border-color: currentColor; }
.badge.id { font-family: var(--mono); color: var(--text); }

.facts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
    gap: .1rem 1rem;
    margin: 0 0 1.5rem;
    padding: .75rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.facts dt { font-size: .76em; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.facts dd { margin: 0 0 .5rem; font-variant-numeric: tabular-nums; }

.fields { margin: 0; }
.fields .grp { margin: 0 0 1rem; }
.fields .grp > h3 {
    font-size: .82em;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--muted);
    margin: 1.2rem 0 .4rem;
    padding-bottom: .2rem;
    border-bottom: 1px solid var(--border);
}
.fields .grp .grp { margin-left: 1rem; }

.kv { display: grid; grid-template-columns: minmax(11rem, 16rem) 1fr; gap: .1rem 1rem; }
.kv > dt { color: var(--muted); padding: .15rem 0; }
.kv > dd { margin: 0; padding: .15rem 0; overflow-wrap: anywhere; }
.kv > dd .resolved, .facts > dd .resolved { color: var(--muted); }
.kv > dd .resolved::before, .facts > dd .resolved::before { content: " - "; }
.kv > dd a { color: var(--accent); }
.kv > dd.mono { font-family: var(--mono); font-size: .92em; }

.kids { margin-top: 1.5rem; display: flex; gap: .5rem; flex-wrap: wrap; }
.kids button, .paste-row button, .op-actions button {
    font: inherit; color: var(--accent); background: none;
    border: 1px solid var(--border); border-radius: 5px;
    padding: .4rem .8rem; cursor: pointer;
}
.kids button:hover, .paste-row button:hover, .op-actions button:hover { border-color: var(--accent); }
.kids button:disabled, .paste-row button:disabled, .op-actions button:disabled {
    opacity: .5; cursor: default;
}

.spinner { color: var(--muted); padding: 1rem 0; }
.error { color: var(--closed); background: var(--closed-soft); padding: .75rem 1rem; border-radius: 6px; }

.fatal { margin: 3rem auto; max-width: 40rem; }
.fatal pre, .fatal code {
    font-family: var(--mono);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: .75rem;
    display: block;
    overflow-x: auto;
}