/* OpsKit — hand-written CSS, no build step. */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #5b6474;
  --border: #e2e5ea;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --good: #15803d;
  --bad: #b91c1c;
  --warn: #b45309;
  --mark: #fde68a;
  --code-bg: #f1f3f6;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
/* Dark palette. Applied when the OS prefers dark (unless the user picked light),
   or when the user picked dark explicitly. theme.js sets <html data-theme>. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0f17; --surface: #121826; --text: #e6e9ef; --muted: #98a2b3; --border: #232c3d;
    --accent: #60a5fa; --accent-ink: #0b0f17; --good: #4ade80; --bad: #f87171; --warn: #fbbf24;
    --mark: #854d0e; --code-bg: #1a2233; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b0f17; --surface: #121826; --text: #e6e9ef; --muted: #98a2b3; --border: #232c3d;
  --accent: #60a5fa; --accent-ink: #0b0f17; --good: #4ade80; --bad: #f87171; --warn: #fbbf24;
  --mark: #854d0e; --code-bg: #1a2233; color-scheme: dark;
}

.theme-toggle { background: none; border: 1px solid var(--border); color: var(--muted); border-radius: 999px;
  padding: .2rem .7rem; font: inherit; font-size: .85rem; cursor: pointer; display: inline-flex; align-items: center; gap: .35rem; }
.theme-toggle[hidden] { display: none; }
.theme-toggle:hover { color: var(--text); border-color: var(--accent); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.header-actions { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: var(--mono); font-size: .92em; }
code { background: var(--code-bg); padding: .1em .35em; border-radius: 4px; overflow-wrap: anywhere; }
pre { background: var(--code-bg); padding: 1rem; border-radius: var(--radius); overflow-x: auto; line-height: 1.45; }
pre code { background: none; padding: 0; }
h1 { font-size: clamp(1.6rem, 4vw, 2.3rem); line-height: 1.2; margin: .3rem 0 .5rem; letter-spacing: -.01em; }
h2 { font-size: 1.3rem; margin: 2rem 0 .6rem; }
.h3, h3 { font-size: 1.05rem; margin: 1.2rem 0 .5rem; }
.muted { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--surface); padding: .5rem 1rem; z-index: 10; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 60px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); font-size: 1.1rem; }
.brand-mark { font-family: var(--mono); background: var(--text); color: var(--bg); padding: .05rem .4rem; border-radius: 6px; margin-right: .3rem; }
.nav { display: flex; gap: 1.2rem; }
.nav a { color: var(--muted); }
main { padding-top: 1.5rem; padding-bottom: 3rem; min-height: 70vh; }
.site-footer { border-top: 1px solid var(--border); background: var(--surface); font-size: .9rem; }
.footer-inner { padding-top: 1.2rem; padding-bottom: 1.5rem; }

.hero { padding: 1.5rem 0 1rem; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 760px; margin: 0 0 .8rem; }
.badge { display: inline-block; font-size: .85rem; background: var(--code-bg); border: 1px solid var(--border); border-radius: 999px; padding: .25rem .8rem; margin: 0; color: var(--muted); }
.crumbs { font-size: .9rem; color: var(--muted); }
.crumbs a { color: var(--muted); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.tool { padding: 1.25rem; margin: 1.25rem 0; }
.tool-head { margin-bottom: .5rem; }

.tool-grid { list-style: none; padding: 0; margin: 1rem 0; display: grid; gap: .9rem; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.tool-grid.small { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .5rem; }
.tool-tile { display: flex; gap: .8rem; padding: 1rem; color: var(--text); height: 100%; align-items: flex-start; transition: border-color .15s, transform .15s; }
.tool-grid.small .tool-tile { padding: .6rem .8rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); align-items: center; }
.tool-tile:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-1px); }
.tool-tile .icon { font-size: 1.5rem; line-height: 1; }
.tile-body { display: flex; flex-direction: column; gap: .2rem; }
.tile-body .muted { font-size: .9rem; line-height: 1.45; }

.label { display: block; font-weight: 600; font-size: .9rem; margin: .4rem 0 .35rem; }
.input { width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: .55rem .7rem; font: inherit; }
.input.mono, textarea.input { font-family: var(--mono); font-size: .9rem; resize: vertical; }
.input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.input[aria-invalid="true"] { border-color: var(--bad); }
.input.big { font-size: 1.15rem; }
.input.small { width: auto; padding: .25rem .4rem; }
.input.readonly { display: block; background: var(--code-bg); min-height: 2.6rem; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin: .6rem 0; }
.row > .input { flex: 1 1 260px; }
.row.between { justify-content: space-between; margin: 0; }
.field { flex: 1 1 200px; min-width: 0; }
.field.grow { flex: 4 1 300px; }
.inline { display: inline-flex; gap: .35rem; align-items: center; font-size: .9rem; }
.btn { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: .5rem .9rem; font: inherit; font-size: .9rem; cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn.small { padding: .2rem .55rem; font-size: .8rem; }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1rem; }
.chip { background: var(--code-bg); border: 1px solid var(--border); color: var(--text); border-radius: 999px; padding: .25rem .7rem; font-size: .85rem; cursor: pointer; }
.chip:hover { border-color: var(--accent); }

.result { font-size: 1.1rem; font-weight: 600; margin: .8rem 0; }
.result.good { color: var(--good); }
.result.bad { color: var(--bad); }
.error { color: var(--bad); font-weight: 600; margin: .5rem 0; }
.error.info { color: var(--warn); }
.note { border-left: 3px solid var(--warn); padding: .4rem .8rem; background: var(--code-bg); border-radius: 0 6px 6px 0; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.2rem; }
.grid-2 > * { min-width: 0; }
.table { width: 100%; border-collapse: collapse; font-size: .93rem; margin: .5rem 0 1rem; }
.table th, .table td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.table thead th { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.table.perms td, .table.perms thead th:not(:first-child) { text-align: center; }
.table.perms input { width: 1.2rem; height: 1.2rem; accent-color: var(--accent); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; margin: 1rem 0; }
.kv dt { color: var(--muted); font-size: .9rem; }
.kv dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 520px) { .kv { grid-template-columns: 1fr; } .kv dd { margin-bottom: .4rem; } }
.list { padding-left: 1.4rem; margin: .3rem 0; }
.code-out { min-height: 6rem; margin: .3rem 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.code-out.wrap { white-space: pre-wrap; }
mark { background: var(--mark); color: inherit; border-radius: 3px; padding: 0 1px; }
details.verify { margin-top: 1rem; border-top: 1px solid var(--border); padding-top: .8rem; }
details.verify summary { cursor: pointer; font-weight: 600; }

.ref-list { list-style: none; padding: 0; margin: 1rem 0 0; }
.ref-list li { display: flex; flex-wrap: wrap; gap: .3rem .8rem; align-items: baseline; padding: .55rem 0; border-bottom: 1px solid var(--border); }
.ref-list li[hidden] { display: none; }
.ref-list a { color: var(--text); }
.ref-list .muted { flex: 1 1 300px; font-size: .9rem; }
.code-badge { font-weight: 700; min-width: 3.4rem; display: inline-block; text-align: center; }
.c2 { color: var(--good); } .c3 { color: var(--accent); } .c4 { color: var(--warn); } .c5 { color: var(--bad); }
.risk { font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; font-weight: 700; padding: .1rem .5rem; border-radius: 999px; border: 1px solid currentColor; }
.risk-low { color: var(--good); } .risk-medium { color: var(--warn); } .risk-high { color: var(--bad); }

.prose { max-width: 780px; }
.prose.narrow { margin: 0 auto; }
.prose ul { padding-left: 1.3rem; }
.link-list { list-style: none; padding: 0 !important; }
.link-list li { padding: .2rem 0; }
.link-list.cols { columns: 4 140px; }
.related { margin-top: 2.5rem; }
.ad-slot { margin: 1.5rem 0; min-height: 1px; }
.now { font-size: 1.05rem; }

/* ---------- PDF tools ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: .35rem; border-bottom: 1px solid var(--border); padding-bottom: .6rem; margin-bottom: 1rem; }
.tab { background: none; border: 1px solid transparent; border-radius: 8px; padding: .4rem .75rem; font: inherit; font-size: .9rem; color: var(--muted); cursor: pointer; }
.tab:hover { color: var(--text); border-color: var(--border); }
.tab[aria-selected="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.tab-panel[hidden] { display: none; }
.dropzone { display: flex; align-items: center; justify-content: center; text-align: center; min-height: 7rem; padding: 1rem;
  border: 2px dashed var(--border); border-radius: var(--radius); background: var(--bg); color: var(--muted); cursor: pointer; transition: border-color .15s, background .15s; }
.dropzone:hover, .dropzone.over, .dropzone:focus-within { border-color: var(--accent); color: var(--text); }
.dropzone.over { background: var(--code-bg); }
.dropzone input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.dropzone u { color: var(--accent); }
.file-info { margin: .6rem 0 0; }
.file-list { list-style: decimal; padding-left: 1.6rem; margin: .8rem 0; }
.file-list li { padding: .3rem 0; border-bottom: 1px solid var(--border); }
.file-list li > * { vertical-align: middle; }
.file-list .name { overflow-wrap: anywhere; margin-right: .6rem; }
.file-list .muted { font-size: .85rem; margin-right: .6rem; }
.item-actions { display: inline-flex; gap: .25rem; }
fieldset.options { border: 0; padding: 0; margin: 1rem 0 0; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; gap: .45rem; }
fieldset.options legend { padding: 0; }
fieldset.options .inline { align-items: flex-start; }
fieldset.options .inline input[type="radio"], fieldset.options .inline input[type="checkbox"] { margin-top: .35rem; }
fieldset.options > .input { max-width: 420px; }
.small-note { font-size: .85rem; margin: .2rem 0; }
.thumbs { list-style: none; padding: 0; margin: 1rem 0; display: grid; gap: .8rem; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr)); }
.thumb { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); padding: .5rem; display: flex; flex-direction: column; align-items: center; gap: .35rem; cursor: grab; }
.thumb.over { border-color: var(--accent); }
.thumb.deleted .thumb-frame { opacity: .25; }
.thumb.deleted .thumb-cap { text-decoration: line-through; }
.thumb-frame { width: 100%; height: 170px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.thumb-frame canvas { max-width: 120px; max-height: 160px; box-shadow: 0 1px 4px rgba(0, 0, 0, .25); transition: transform .2s; }
.thumb-cap { font-size: .8rem; color: var(--muted); }
.thumb-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .2rem; }
.thumb-actions .btn { padding: .15rem .4rem; }
.status { min-height: 1.4em; margin: .8rem 0 0; color: var(--muted); }
.downloads { margin-top: .6rem; }
.downloads .result { margin: .2rem 0 .6rem; }
.download-list { list-style: none; padding: 0; margin: .6rem 0 0; display: flex; flex-direction: column; gap: .35rem; max-height: 22rem; overflow-y: auto; }
.download-list li { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.download-list .btn { overflow-wrap: anywhere; }
a.btn { display: inline-block; text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }