/* kobibri — the palette takes after the device it serves: an e-ink screen.
   Near-monochrome, high contrast, one restrained ink-stamp accent. Neutrals are
   biased toward that accent rather than left a default grey. */

:root {
  --ground:      #f7f7fa;
  --surface:     #ffffff;
  --surface-sunk:#f1f2f6;
  --ink:         #15161b;
  --ink-muted:   #5a5e6e;
  --ink-faint:   #8b90a2;
  --line:        #e2e3ea;
  --line-strong: #cdd0dc;

  --accent:      #2e4b9b;
  --accent-ink:  #ffffff;
  --accent-soft: #eaeef9;

  --ok:      #1f7a4d;
  --ok-soft: #e6f3ec;
  --warn:      #9a6100;
  --warn-soft: #fbf0dd;
  --bad:      #a32b25;
  --bad-soft: #fbeae9;

  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 1px 2px rgb(21 22 27 / 6%), 0 1px 1px rgb(21 22 27 / 4%);

  --serif: ui-serif, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground:      #101116;
    --surface:     #171a21;
    --surface-sunk:#1d212a;
    --ink:         #e7e8ee;
    --ink-muted:   #9a9eb0;
    --ink-faint:   #6d7285;
    --line:        #262a34;
    --line-strong: #363b48;

    --accent:      #8aa6ee;
    --accent-ink:  #0e1017;
    --accent-soft: #1b2233;

    --ok:      #56c78d;
    --ok-soft: #14261d;
    --warn:      #dfa640;
    --warn-soft: #2a2114;
    --bad:      #f08a83;
    --bad-soft: #2c1716;

    --shadow: 0 1px 2px rgb(0 0 0 / 40%);
  }
}

:root[data-theme="dark"] {
  --ground:      #101116;
  --surface:     #171a21;
  --surface-sunk:#1d212a;
  --ink:         #e7e8ee;
  --ink-muted:   #9a9eb0;
  --ink-faint:   #6d7285;
  --line:        #262a34;
  --line-strong: #363b48;

  --accent:      #8aa6ee;
  --accent-ink:  #0e1017;
  --accent-soft: #1b2233;

  --ok:      #56c78d;
  --ok-soft: #14261d;
  --warn:      #dfa640;
  --warn-soft: #2a2114;
  --bad:      #f08a83;
  --bad-soft: #2c1716;

  --shadow: 0 1px 2px rgb(0 0 0 / 40%);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 600; text-wrap: balance; margin: 0; }
h1 { font-size: 1.75rem; letter-spacing: -0.01em; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }

/* ---- Shell: a narrow spine on the left, content in a bounded column ---- */

.shell { display: grid; grid-template-columns: 216px minmax(0, 1fr); min-height: 100vh; }

.spine {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 22px 16px;
  background: var(--surface);
  border-right: 1px solid var(--line);
  position: sticky;
  top: 0;
  height: 100vh;
}

.wordmark {
  display: flex; align-items: center; gap: 9px;
  font-family: var(--serif); font-size: 1.2rem; font-weight: 600;
  color: var(--ink); text-decoration: none;
}
.wordmark-mark {
  width: 15px; height: 20px; border-radius: 2px;
  background: var(--accent);
  box-shadow: inset 4px 0 0 rgb(255 255 255 / 35%);
}

.nav { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.nav a {
  display: block; padding: 7px 10px; border-radius: var(--radius);
  color: var(--ink-muted); text-decoration: none; font-size: 0.94rem;
}
.nav a:hover { background: var(--surface-sunk); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.spine-foot { margin-top: auto; display: flex; flex-direction: column; gap: 12px; }
.signout { display: flex; flex-direction: column; gap: 4px; }
.langpick select {
  font-size: 0.85rem; padding: 5px 8px; color: var(--ink-muted);
  background: var(--surface); border: 1px solid var(--line);
}
.langpick select:hover { color: var(--ink); border-color: var(--line-strong); }
.login-lang { margin-top: 16px; }
.login-lang select { max-width: 160px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.whoami { font-size: 0.82rem; color: var(--ink-faint); }
.link {
  background: none; border: 0; padding: 0; text-align: left;
  color: var(--accent); font: inherit; font-size: 0.88rem; cursor: pointer;
  text-decoration: underline; text-underline-offset: 2px;
}

.main { padding: 30px 34px 72px; max-width: 1140px; width: 100%; }

.page-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 20px; flex-wrap: wrap; margin-bottom: 22px;
}
.page-head p { margin: 4px 0 0; color: var(--ink-muted); max-width: 62ch; }

/* ---- Notes ---- */

.note {
  margin: 0 0 18px; padding: 10px 14px; border-radius: var(--radius);
  border: 1px solid var(--line); font-size: 0.92rem;
}
.note-ok  { background: var(--ok-soft);  border-color: color-mix(in srgb, var(--ok) 35%, transparent); }
.note-bad { background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 35%, transparent); }

/* ---- Warnings: state read as form, not only as words ---- */

.warnings { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.warn-row {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px 11px 12px;
  background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.warn-row.critical { border-left-color: var(--bad); }
.warn-row p { margin: 0; flex: 1; font-size: 0.93rem; }
.warn-row a { white-space: nowrap; font-size: 0.9rem; }

/* ---- Tiles ---- */

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 28px; }
.tile {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 14px 16px; box-shadow: var(--shadow);
}
.tile dt {
  font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--ink-faint); margin-bottom: 6px;
}
.tile dd {
  margin: 0; font-size: 1.65rem; font-weight: 600;
  font-variant-numeric: tabular-nums; line-height: 1.1;
}
.tile .sub { display: block; font-size: 0.82rem; font-weight: 400; color: var(--ink-muted); margin-top: 3px; }

/* ---- Cards and sections ---- */

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  margin-bottom: 20px; overflow: hidden;
}
.card-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 14px;
  padding: 14px 18px; border-bottom: 1px solid var(--line);
}
.card-head p { margin: 3px 0 0; color: var(--ink-muted); font-size: 0.88rem; }
.card-body { padding: 16px 18px; }
.card-body > :first-child { margin-top: 0; }

/* ---- Tables ---- */

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th {
  font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-faint); font-weight: 600; background: var(--surface-sunk);
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); font-size: 0.85em; color: var(--ink-muted); }

/* ---- Pills ---- */

.pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px; border-radius: 999px;
  font-size: 0.76rem; font-weight: 600; white-space: nowrap;
  background: var(--surface-sunk); color: var(--ink-muted);
  border: 1px solid var(--line);
}
.pill-ok   { background: var(--ok-soft);   color: var(--ok);   border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.pill-warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.pill-bad  { background: var(--bad-soft);  color: var(--bad);  border-color: color-mix(in srgb, var(--bad) 30%, transparent); }
.pill-accent { background: var(--accent-soft); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 28%, transparent); }

/* ---- Forms and buttons ---- */

input[type="text"], input[type="password"], input[type="number"], input[type="search"], select {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 7px 10px; width: 100%; max-width: 100%;
}
input::placeholder { color: var(--ink-faint); }

label { display: block; font-size: 0.82rem; color: var(--ink-muted); margin-bottom: 4px; }
.field { display: flex; flex-direction: column; }
.form-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.form-row .field { flex: 1 1 180px; }
.form-row .field.narrow { flex: 0 0 110px; }
.hint { font-size: 0.82rem; color: var(--ink-faint); margin: 6px 0 0; }

.btn {
  font: inherit; font-size: 0.9rem; font-weight: 500;
  padding: 7px 14px; border-radius: var(--radius); cursor: pointer;
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--line-strong);
  white-space: nowrap;
}
.btn:hover { background: var(--surface-sunk); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-quiet { border-color: transparent; background: transparent; color: var(--ink-muted); padding: 5px 8px; }
.btn-quiet:hover { background: var(--surface-sunk); color: var(--ink); }
.btn-bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, transparent); }
.btn-bad:hover { background: var(--bad-soft); }
.btn-sm { font-size: 0.83rem; padding: 4px 9px; }

.inline-form { display: inline; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

/* ---- Library grid: real covers, since we already render them ---- */

.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 18px; }
.filters .field { flex: 0 1 220px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
  gap: 20px 16px;
}
.book { display: flex; flex-direction: column; gap: 7px; }
.book a.cover-link { display: block; text-decoration: none; }
.cover {
  display: block; width: 100%; aspect-ratio: 3 / 4; object-fit: cover;
  background: var(--surface-sunk);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.book.is-dim .cover { opacity: 0.45; }
.book-title {
  font-size: 0.88rem; font-weight: 600; line-height: 1.3;
  color: var(--ink); text-decoration: none;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.book-author { font-size: 0.8rem; color: var(--ink-muted); }
.book-flags { display: flex; gap: 4px; flex-wrap: wrap; }

.pager { display: flex; gap: 10px; align-items: center; justify-content: center; margin-top: 28px; }
.pager span { color: var(--ink-muted); font-size: 0.88rem; font-variant-numeric: tabular-nums; }

/* ---- Book detail ---- */

.book-detail { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 28px; align-items: start; }
.book-detail .cover { border-radius: var(--radius-lg); }
.meta { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 7px; }
.meta li { display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 10px; font-size: 0.9rem; }
.meta dt, .meta .k { color: var(--ink-faint); font-size: 0.82rem; padding-top: 1px; }
.blurb { margin-top: 14px; color: var(--ink-muted); font-size: 0.92rem; max-width: 62ch; }
.blurb p { margin: 0 0 8px; }

.downloads { display: flex; flex-direction: column; gap: 8px; }
.download {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--surface);
  text-decoration: none; color: var(--ink);
}
.download:hover { border-color: var(--accent); background: var(--accent-soft); }
.download .fmt { font-family: var(--mono); font-weight: 600; font-size: 0.86rem; }
.download .why { flex: 1; color: var(--ink-muted); font-size: 0.86rem; }
.download .size { color: var(--ink-faint); font-size: 0.84rem; font-variant-numeric: tabular-nums; }

/* A contributor's rank is information: it explains which library won. */
.rank {
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint);
  width: 1.6em; display: inline-block;
}
tr.is-winner td { background: color-mix(in srgb, var(--accent-soft) 55%, transparent); }
tr.is-missing td { color: var(--ink-faint); }

/* ---- Setup box: the one thing a new user must copy exactly ---- */

.setup {
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  background: var(--accent-soft);
  border-radius: var(--radius-lg); padding: 16px 18px; margin-bottom: 20px;
}
.setup h2 { margin-bottom: 6px; }
.setup p { margin: 0 0 10px; font-size: 0.92rem; }
.copy-row { display: flex; gap: 8px; align-items: stretch; }
.copy-row code {
  flex: 1; font-family: var(--mono); font-size: 0.86rem;
  background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 9px 11px;
  overflow-x: auto; white-space: nowrap;
}

/* ---- Login ---- */

.login-page {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 24px;
  background: var(--ground);
}
.login-card {
  width: 100%; max-width: 340px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: 26px 24px;
}
.login-card .wordmark { margin-bottom: 4px; }
.login-card p.tagline { margin: 0 0 20px; color: var(--ink-muted); font-size: 0.9rem; }
.login-card .field { margin-bottom: 12px; }
.login-card .btn { width: 100%; margin-top: 6px; }

.empty { color: var(--ink-muted); font-size: 0.93rem; margin: 0; }

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

/* How far through a book someone is, drawn over the foot of its cover. */
.cover-link { position: relative; display: block; }
.progress {
  position: absolute; left: 0; right: 0; bottom: 0; height: 4px;
  background: rgba(0, 0, 0, 0.45);
}
.progress-fill { display: block; height: 100%; background: var(--accent); }

.checks { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 10px 0 14px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 0.92rem; }
.check input { margin: 0; }

/* Reading a book in the browser. The page itself is an iframe, so the frame is
   given a real height rather than being left to collapse to nothing. */
.reader {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); overflow: hidden;
}
.reader-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-bottom: 1px solid var(--line);
  background: var(--surface-sunk);
}
.reader-bar form { display: flex; gap: 8px; align-items: center; margin: 0; flex: 1 1 auto; }
.reader-bar select { width: 100%; max-width: 42ch; }
.reader-count {
  color: var(--ink-muted); font-size: 0.85rem;
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.btn.is-off { opacity: 0.4; cursor: default; }
.reader-page {
  display: block; width: 100%; height: min(78vh, 900px);
  border: 0; background: #fff;
}

@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .spine {
    position: static; height: auto; flex-direction: row; align-items: center;
    gap: 16px; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--line);
  }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .spine-foot { margin-top: 0; margin-left: auto; flex-direction: row; align-items: center; gap: 12px; }
  .signout { flex-direction: row; align-items: center; gap: 10px; }
  .main { padding: 20px 16px 56px; }
  .book-detail { grid-template-columns: 1fr; }
  .book-detail .cover { max-width: 180px; }
  .reader-page { height: 70vh; }
  .reader-count { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}