/* bibmd's colours, as its canvas has them: warm paper or warm off-black, ink, and the one teal.
   The viewer's page (bibmd's web/wwwroot/index.html) has the same, so the frame and the page read as one. */
@font-face { font-family: "Inter"; src: url(/fonts/Inter-Regular.woff) format("woff"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Inter"; src: url(/fonts/Inter-SemiBold.woff) format("woff"); font-weight: 600; font-display: swap; }
@font-face { font-family: "iA Writer Mono S"; src: url(/fonts/iAWriterMonoS-Regular.woff) format("woff"); font-weight: 400; font-display: swap; }
@font-face { font-family: "iA Writer Mono S"; src: url(/fonts/iAWriterMonoS-Bold.woff) format("woff"); font-weight: 700; font-display: swap; }

:root {
  --ground: #FCFAF7; --raised: #F6F4F0; --sunk: #E7E4E0; --card: #FFFFFF; --ink: #1A1815; --soft: #57524C; --faint: #A49F99;
  --line: #E7E4E0; --line-strong: #D7D4CF; --accent: #007A8C; --accent-ink: #FCFAF7; --accent-wash: #D6EFF4;
  --danger: #C24A3E; --warn-bg: #FBEFD5; --dot: rgb(26 24 21 / .07);
  --shadow: 0 1px 2px rgb(26 24 21 / .06), 0 12px 32px -8px rgb(26 24 21 / .18);
  --mono: "iA Writer Mono S", ui-monospace, "SF Mono", monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 9px; color-scheme: light;
}
:root[data-theme=dark] {
  --ground: #161412; --raised: #1F1C19; --sunk: #2A2723; --card: #1B1916; --ink: #DAD6D0; --soft: #A49F99; --faint: #777169;
  --line: #2A2723; --line-strong: #433F3A; --accent: #6AA8B5; --accent-ink: #0B0907; --accent-wash: #164852;
  --danger: #E97065; --warn-bg: #392500; --dot: rgb(218 214 208 / .06);
  --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 16px 40px -8px rgb(0 0 0 / .6); color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --ground: #161412; --raised: #1F1C19; --sunk: #2A2723; --card: #1B1916; --ink: #DAD6D0; --soft: #A49F99; --faint: #777169;
    --line: #2A2723; --line-strong: #433F3A; --accent: #6AA8B5; --accent-ink: #0B0907; --accent-wash: #164852;
    --danger: #E97065; --warn-bg: #392500; --dot: rgb(218 214 208 / .06);
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 16px 40px -8px rgb(0 0 0 / .6); color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--ground); color: var(--ink); }
body { font: 15px/1.55 var(--sans); -webkit-font-smoothing: antialiased; min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column;
  transition: background-color .4s ease, color .4s ease; }
a { color: inherit; }
h1 { font-size: 1.75rem; line-height: 1.15; margin: 0 0 .75rem; letter-spacing: -.022em; font-weight: 600; }
h2 { font-size: 1rem; margin: 2.5rem 0 .75rem; font-weight: 600; }
p { margin: 0 0 1rem; }
code { font: .85em var(--mono); background: var(--raised); border: 1px solid var(--line); border-radius: 5px; padding: .08rem .35rem; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
svg.i { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.kicker { font: 700 11px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--faint); }
.fine { color: var(--soft); font-size: .85rem; }
.below { margin: 1.25rem 0 0; }
.error { color: var(--danger); }
.dev { background: var(--warn-bg); padding: .55rem .8rem; border-radius: var(--radius); font-size: .9rem; }
/* Squared paper, faintly: the notebook the documents are written in. */
.paper { background-image: radial-gradient(var(--dot) 1px, transparent 1.2px); background-size: 22px 22px; background-position: -11px -11px; }

/* ── The header ── */
.top { display: flex; align-items: center; gap: 1rem; height: 56px; padding: 0 1.25rem; border-bottom: 1px solid var(--line); flex: none;
  background: color-mix(in srgb, var(--ground) 88%, transparent); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 5; }
.mark { display: inline-flex; align-items: center; gap: .55rem; font: 700 12px/1 var(--mono); letter-spacing: .3em; text-transform: uppercase; text-decoration: none; }
.mark .glyph { width: 22px; height: 22px; border-radius: 6px; background: var(--ink); color: var(--ground); display: grid; place-items: center;
  font: 700 11px/1 var(--mono); letter-spacing: 0; text-transform: none; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: .25rem; font-size: .9rem; }
.top nav > a { text-decoration: none; color: var(--soft); padding: .4rem .7rem; border-radius: 8px; }
.top nav > a:hover { color: var(--ink); background: var(--raised); }
.top nav > a[aria-current=page] { color: var(--ink); }
.top form { margin: 0; }
.avatar { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-wash); color: var(--accent);
  font-weight: 600; font-size: .8rem; border: 0; cursor: pointer; margin-left: .35rem; }
details.account { position: relative; }
details.account summary { list-style: none; }
details.account summary::-webkit-details-marker { display: none; }
details.account .menu { right: 0; top: calc(100% + 8px); display: block; }

/* ── Buttons, fields ── */
.button { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; height: 36px; padding: 0 .95rem;
  border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--card); color: var(--ink);
  font: inherit; font-size: .9rem; font-weight: 500; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: border-color .12s ease, background-color .12s ease, filter .12s ease, transform .08s ease; }
.button:hover { border-color: var(--faint); }
.button:active { transform: translateY(1px); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button.primary:hover { filter: brightness(1.08); }
.button.ghost { background: transparent; }
.button.danger { background: transparent; color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.button.wide { width: 100%; }
label.button { margin: 0; color: var(--ink); }
.button.big { height: 44px; padding: 0 1.3rem; font-size: 1rem; }
.link { background: none; border: 0; padding: 0; font: inherit; color: var(--soft); cursor: pointer; text-decoration: none; }
.link:hover { color: var(--ink); }
label { display: block; font-size: .85rem; color: var(--soft); margin: 1rem 0 .35rem; }
input[type=email], input[type=text], input[type=search], input[type=url], select { width: 100%; height: 38px; padding: 0 .75rem; border-radius: var(--radius);
  border: 1px solid var(--line-strong); background: var(--card); color: var(--ink); font: inherit; }
input::placeholder { color: var(--faint); }
input:focus, select:focus, .button:focus-visible, .tool:focus-visible, .seg button:focus-visible, .link:focus-visible, .docs a:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px; }

/* ── Small pages: signing in, a client asking, nothing found ── */
main.narrow { width: min(26rem, 100%); margin: 9vh auto 4rem; padding: 0 1.25rem; }
main.card { width: min(26rem, calc(100% - 2rem)); background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 2rem; box-shadow: var(--shadow); }
main.narrow h1 { font-size: 1.5rem; }
form .button.wide { margin-top: 1rem; }
.or { display: flex; align-items: center; gap: .75rem; color: var(--faint); font-size: .8rem; margin: 1rem 0 0; text-transform: uppercase; letter-spacing: .14em; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.google svg { width: 18px; height: 18px; }
.sent { width: 44px; height: 44px; border-radius: 12px; background: var(--accent-wash); color: var(--accent); display: grid; place-items: center; margin-bottom: 1.25rem; }
.sent svg.i { width: 22px; height: 22px; }

/* ── The front page ── */
.landing { width: min(72rem, 100%); margin: 0 auto; padding: 8vh 1.5rem 5rem; display: grid; grid-template-columns: 1.05fr 1fr; gap: 4rem; align-items: center; flex: 1; }
.landing h1 { font-size: clamp(2.6rem, 5.2vw, 4.2rem); line-height: 1.02; letter-spacing: -.04em; margin: 1.1rem 0 1.25rem; }
.landing h1 em { font-style: normal; color: var(--accent); }
.landing .lead { font-size: 1.12rem; color: var(--soft); max-width: 32rem; }
.landing .cta { display: flex; gap: .6rem; flex-wrap: wrap; margin: 2rem 0 .9rem; }
.rise { animation: rise .7s cubic-bezier(.2,.8,.2,1) both; }
.rise.d1 { animation-delay: .06s; } .rise.d2 { animation-delay: .14s; } .rise.d3 { animation-delay: .22s; } .rise.d4 { animation-delay: .34s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }

/* The specimen: a bib block's source, and what it draws, moving. */
.specimen { background: var(--card); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); overflow: hidden; }
.specimen .source { margin: 0; padding: 1.1rem 1.25rem; background: var(--raised); border-bottom: 1px solid var(--line);
  font: 12.5px/1.7 var(--mono); color: var(--soft); white-space: pre; overflow-x: auto; }
.specimen .source b { color: var(--accent); font-weight: 400; }
.specimen .source i { color: var(--faint); font-style: normal; }
.specimen .drawn { padding: 1.25rem 1.25rem 1.4rem; }
.specimen .slider { display: grid; gap: .5rem; margin-bottom: 1.2rem; }
.specimen .slider span { font-size: .85rem; color: var(--soft); }
.specimen .track { position: relative; height: 4px; border-radius: 4px; background: var(--sunk); }
.specimen .fill { position: absolute; inset: 0 auto 0 0; width: 30%; border-radius: 4px; background: var(--accent); }
.specimen .thumb { position: absolute; top: 50%; left: 30%; width: 16px; height: 16px; margin: -8px 0 0 -8px; border-radius: 50%;
  background: var(--ink); box-shadow: 0 0 0 3px var(--card); }
.specimen .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.specimen .stat { border: 1px solid var(--line); border-radius: 12px; padding: .7rem .8rem; transition: border-color .3s ease, box-shadow .3s ease; }
.specimen .stat.best { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.specimen .stat .name { font-size: .8rem; font-weight: 600; }
.specimen .stat .num { font-size: 1.35rem; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.specimen .stat .bar { height: 3px; border-radius: 3px; background: var(--sunk); margin-top: .5rem; overflow: hidden; }
.specimen .stat .bar i { display: block; height: 100%; width: 50%; background: var(--accent); border-radius: 3px; }
.steps { width: min(72rem, 100%); margin: 0 auto; padding: 2.5rem 1.5rem 5rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
  border-top: 1px solid var(--line); }
.steps h3 { margin: .6rem 0 .35rem; font-size: 1rem; letter-spacing: -.01em; }
.steps p { color: var(--soft); font-size: .93rem; margin: 0; }

/* ── The documents ── */
main.wide { width: min(60rem, 100%); margin: 0 auto; padding: 2.75rem 1.25rem 4rem; flex: 1; }
.bar { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.bar h1 { margin: 0 auto 0 0; }
.search { position: relative; width: 15rem; }
.search svg { position: absolute; left: .7rem; top: 50%; transform: translateY(-50%); color: var(--faint); pointer-events: none; }
.search input { padding-left: 2.1rem; }
.section-head { display: flex; align-items: baseline; gap: .6rem; margin: 2.5rem 0 .7rem; }
.section-head h2 { margin: 0; }
.section-head .count { font: 12px/1 var(--mono); color: var(--faint); }
.docs { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--card); overflow: hidden; }
.docs li + li { border-top: 1px solid var(--line); }
.docs a { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr) auto auto; align-items: center; gap: .9rem; padding: .8rem 1rem;
  text-decoration: none; transition: background-color .12s ease; }
.docs a:hover { background: var(--raised); }
.docs .sheet-icon { width: 2.1rem; height: 2.5rem; border-radius: 4px 9px 4px 4px; border: 1px solid var(--line-strong); background: var(--ground);
  display: grid; place-items: center; font: 700 12px/1 var(--mono); color: var(--faint); }
.docs a:hover .sheet-icon { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, var(--line-strong)); }
.docs .what { min-width: 0; }
.docs .title { display: block; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; letter-spacing: -.005em; }
.docs .by { display: block; font-size: .82rem; color: var(--faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.docs .meta { color: var(--faint); font: 12px/1 var(--mono); white-space: nowrap; text-align: right; min-width: 5.5rem; }
.docs li[hidden] { display: none; }
.badge { display: inline-flex; align-items: center; gap: .3rem; font-size: .75rem; color: var(--soft); border: 1px solid var(--line-strong);
  border-radius: 999px; padding: .12rem .55rem; white-space: nowrap; }
.badge.link, .badge.public, .badge.editor { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.badges { display: flex; gap: .35rem; }
.empty { color: var(--soft); padding: 2.5rem 1.5rem; border: 1.5px dashed var(--line-strong); border-radius: 14px; text-align: center; }
.empty strong { display: block; color: var(--ink); font-size: 1.05rem; margin-bottom: .25rem; }
.empty .button { margin-top: 1rem; }
.nomatch { color: var(--faint); padding: 1rem; text-align: center; }
.nomatch[hidden] { display: none; }
body.dragging main.wide { outline: 2px dashed var(--accent); outline-offset: -2px; border-radius: 16px; background: color-mix(in srgb, var(--accent-wash) 25%, transparent); }

/* ── Settings ── */
.panel { border: 1px solid var(--line); border-radius: 14px; background: var(--card); padding: 1.25rem; margin-top: 1rem; }
.panel h2 { margin-top: 0; }
.copyfield { display: flex; gap: .5rem; margin: .75rem 0 0; }
.copyfield code { flex: 1; display: flex; align-items: center; padding: 0 .75rem; height: 36px; font-size: .85rem; overflow: auto; white-space: nowrap; }
.conns { list-style: none; margin: 1rem 0 0; padding: 0; }
.conn { display: flex; align-items: center; gap: .75rem; padding: .85rem 0; border-top: 1px solid var(--line); flex-wrap: wrap; }
.conn .title { font-weight: 600; }
.conn .meta { color: var(--faint); font: 12px/1 var(--mono); margin-right: auto; }
.conn form { margin: 0; }

/* ── A document's page ── */
/* dvh: the height left by the browser's bars (on iOS, 100vh hides the viewer's bottom under them). */
body.docpage { height: 100vh; height: 100dvh; overflow: hidden; }
.docbar { display: flex; align-items: center; gap: .3rem; height: 52px; padding: 0 .75rem; border-bottom: 1px solid var(--line); flex: none; min-width: 0; position: relative; }
.docname { display: flex; align-items: baseline; gap: .6rem; min-width: 0; flex: 0 1 auto; padding: 0 .35rem; }
.doctitle { font-weight: 600; font-size: .98rem; letter-spacing: -.01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.docbar .meta { color: var(--faint); font-size: .82rem; white-space: nowrap; }
#status { font: 12px/1 var(--mono); color: var(--faint); white-space: nowrap; padding: 0 .4rem; }
.spacer { flex: 1; min-width: .5rem; }
.people { display: flex; padding-left: .4rem; }
.people span { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: .72rem; font-weight: 600;
  color: #fff; margin-left: -6px; border: 2px solid var(--ground); animation: rise .3s ease both; }
.tool { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 32px; min-width: 32px; padding: 0 8px;
  border: 0; border-radius: 8px; background: transparent; color: var(--soft); cursor: pointer; white-space: nowrap; font: inherit; font-size: .85rem;
  transition: background-color .12s ease, color .12s ease; text-decoration: none; }
.tool:hover { background: var(--raised); color: var(--ink); }
.tool[aria-pressed=true] { color: var(--accent); background: color-mix(in srgb, var(--accent-wash) 55%, transparent); }
.vsep { width: 1px; height: 20px; background: var(--line); margin: 0 .3rem; flex: none; }
.seg { display: inline-flex; padding: 2px; border-radius: 9px; background: var(--raised); border: 1px solid var(--line); flex: none; }
.seg button { height: 26px; padding: 0 10px; border: 0; border-radius: 7px; background: transparent; color: var(--soft); cursor: pointer; font: inherit;
  display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; transition: background-color .15s ease, color .15s ease, box-shadow .15s ease; }
.seg button[aria-pressed=true] { background: var(--ground); color: var(--ink); box-shadow: 0 1px 2px rgb(0 0 0 / .12), 0 0 0 1px var(--line); }
body.reading .editonly { display: none; }
.docbar .button { height: 32px; padding: 0 .8rem; font-size: .85rem; }
.viewer { flex: 1; min-height: 0; position: relative; }
.viewer iframe { display: block; width: 100%; height: 100%; border: 0; }

.menu { position: absolute; z-index: 20; min-width: 240px; background: var(--ground); border: 1px solid var(--line-strong); border-radius: 12px;
  box-shadow: var(--shadow); padding: 6px; display: none; }
.menu.on { display: block; animation: pop .14s cubic-bezier(.2,.9,.3,1.2); }
@keyframes pop { from { opacity: 0; transform: translateY(-4px) scale(.98); } }
.opt { display: flex; align-items: center; gap: 12px; width: 100%; padding: 7px 10px; border: 0; border-radius: 7px; background: transparent;
  color: var(--soft); cursor: pointer; text-align: left; font: inherit; font-size: .88rem; text-decoration: none; }
.opt:hover { background: var(--raised); color: var(--ink); }
.opt kbd { margin-left: auto; font: 11.5px/1 var(--mono); color: var(--faint); }
.opt.danger { color: var(--danger); }
.opt-sep { height: 1px; background: var(--line); margin: 4px 6px; }
.menu .who { padding: 8px 10px 10px; font-size: .82rem; color: var(--faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 260px; }
.menu .size { display: flex; align-items: center; gap: 6px; padding: 2px 4px 2px 10px; color: var(--soft); font-size: .88rem; }
.menu .size span { flex: 1; }
.menu .size output { font: 12px/1 var(--mono); min-width: 2.5em; text-align: center; color: var(--ink); }
.menu form { margin: 0; }
.menu .narrow-only { display: none; }

dialog { border: 1px solid var(--line); border-radius: 16px; background: var(--ground); color: var(--ink); padding: 1.5rem; width: min(34rem, 94vw); box-shadow: var(--shadow); }
dialog[open] { animation: pop .18s cubic-bezier(.2,.9,.3,1.1); }
dialog::backdrop { background: rgb(10 9 7 / .45); backdrop-filter: blur(2px); }
dialog h2 { margin: 0 2rem .25rem 0; font-size: 1.15rem; letter-spacing: -.01em; }
dialog .close { position: absolute; top: 1rem; right: 1rem; margin: 0; }
.row { display: flex; gap: .5rem; align-items: center; }
.row select { width: auto; }
.row.end { justify-content: space-between; margin-top: 1.5rem; }
.access-opts { display: grid; gap: .4rem; }
.access-opt { display: flex; gap: .75rem; align-items: center; padding: .7rem .8rem; border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; margin: 0; color: var(--ink); }
.access-opt:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent-wash) 30%, transparent); }
.access-opt input { accent-color: var(--accent); margin: 0; }
.access-opt small { display: block; color: var(--soft); font-size: .8rem; }
.access-opt svg.i { color: var(--soft); width: 18px; height: 18px; margin-left: auto; }
.shares { list-style: none; padding: 0; margin: .75rem 0 0; }
.shares li { display: flex; align-items: center; gap: .6rem; padding: .5rem 0; border-top: 1px solid var(--line); font-size: .9rem; }
.shares li .who { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.shares li .initial { width: 28px; height: 28px; border-radius: 50%; background: var(--raised); display: grid; place-items: center; font-size: .75rem; font-weight: 600; color: var(--soft); flex: none; }
.shares select { width: auto; height: 30px; padding: 0 .4rem; font-size: .85rem; }

fieldset.access { border: 0; padding: 0; margin: 1.25rem 0; display: grid; gap: .5rem; }
.option { display: flex; gap: .75rem; align-items: flex-start; margin: 0; padding: .8rem; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); cursor: pointer; }
.option:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent-wash) 30%, transparent); }
.option:has(input:disabled) { opacity: .5; cursor: default; }
.option input { margin-top: .3rem; accent-color: var(--accent); }

.foot { border-top: 1px solid var(--line); padding: 1.25rem 1.5rem; display: flex; align-items: center; gap: 1rem; color: var(--faint); font-size: .82rem; flex: none; }
.foot .mark { color: var(--faint); font-size: 10.5px; }
.foot a { color: var(--soft); text-decoration: none; }

/* A phone: the header and the document's bar keep to one line each, without pushing the page wider. */
@media (max-width: 860px) {
  .landing { grid-template-columns: 1fr; gap: 2.5rem; padding-top: 6vh; }
  .steps { grid-template-columns: 1fr; gap: 1.5rem; }
}
@media (max-width: 640px) {
  .top { padding: 0 .75rem; gap: .5rem; height: 52px; }
  .top nav > a.wide-only { display: none; }
  .docbar { gap: .1rem; padding: 0 .35rem; height: 48px; }
  .docbar .meta, .docbar .wide-only, .docbar .label { display: none; }
  .menu .narrow-only { display: flex; }
  .docname { flex: 1 1 auto; }
  .docbar .button { padding: 0 .65rem; }
  .bar .search { order: 3; width: 100%; }
  .docs a { grid-template-columns: 2.1rem minmax(0, 1fr) auto; }
  .docs .badges { display: none; }
  main.card { padding: 1.4rem; margin-top: 5vh; }
  .specimen .stat .num { font-size: 1.1rem; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }