/* Novel Translator — editorial web reader.
   Japanese contemporary editorial aesthetic: cold paper, sumi ink,
   ai-iro indigo. The genkō yōshi column marker is the visual signature. */

:root {
  --paper: #f4f4ef;
  --paper-raised: #fbfbf8;
  --ink: #23252e;
  --ink-soft: #55565e;
  --ink-faint: #686971;
  --indigo: #41518f;
  --indigo-deep: #2b3465;
  --indigo-soft: #e4e7f2;
  --vermilion: #b6432e;
  --line: #d9d9d1;
  --line-soft: #e7e7e0;
  --ok: #2e6b4f;
  --warn: #8a5a1e;
  --font-read: "Iowan Old Style", "Palatino Linotype", Palatino,
    "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", "Noto Serif",
    serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", "Yu Gothic UI",
    "Hiragino Sans", sans-serif;
  --tap: 2.75rem;
  --radius: 4px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--indigo);
  text-decoration-color: color-mix(in srgb, var(--indigo) 40%, transparent);
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--indigo-deep);
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Shell ---------- */

.shell {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1rem 5rem;
}

/* Genkō yōshi signature: vertical indigo rule with column ticks
   running down the left edge of the reading sheet. */
.sheet {
  position: relative;
  padding-left: 1.4rem;
}

.sheet::before {
  content: "";
  position: absolute;
  left: 0.45rem;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 2px;
  background: var(--indigo);
}

.sheet::after {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 1.2rem;
  bottom: 1.2rem;
  width: 0.42rem;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 0.5rem,
    var(--indigo-soft) 0.5rem,
    var(--indigo-soft) 0.58rem,
    transparent 0.58rem
  );
}

.masthead {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 1.4rem 0 1rem;
  border-bottom: 1px solid var(--line);
}

.masthead a.home {
  font-family: var(--font-read);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.masthead a.home::before {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  margin-right: 0.45em;
  margin-bottom: 0.08em;
  background: var(--indigo);
}

.masthead .tagline {
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- Typography ---------- */

h1 {
  font-family: var(--font-read);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0 0 0.4rem;
}

h2 {
  font-family: var(--font-read);
  font-weight: 600;
  font-size: 1.15rem;
  margin: 2rem 0 0.6rem;
}

h2:first-child {
  margin-top: 0;
}

.subtitle {
  color: var(--ink-soft);
  margin: 0 0 1.2rem;
  font-size: 0.95rem;
}

.reading {
  font-family: var(--font-read);
  font-size: 1.06rem;
  line-height: 1.85;
}

.reading p {
  margin: 0 0 1.05em;
}

.reading h1,
.reading h2,
.reading h3 {
  margin: 1.4em 0 0.5em;
  font-size: 1.12rem;
}

.source-text {
  font-family: var(--font-read);
  line-height: 2.05;
  letter-spacing: 0.01em;
  white-space: pre-wrap;
  word-break: normal;
  overflow-wrap: anywhere;
}

.muted {
  color: var(--ink-faint);
  font-size: 0.9rem;
}

code,
.code {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.85em;
}

/* ---------- Cards & lists ---------- */

.card {
  background: var(--paper-raised);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  margin-bottom: 0.7rem;
}

.listing {
  list-style: none;
  margin: 0;
  padding: 0;
}

.listing > li + li {
  border-top: 1px solid var(--line-soft);
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.55rem 0;
}

.row .grow {
  flex: 1;
  min-width: 0;
}

.row .head {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.row .meta {
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.chapter-link {
  font-family: var(--font-read);
  font-size: 1.02rem;
}

/* ---------- Badges ---------- */

.badge {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  background: var(--paper);
  white-space: nowrap;
}

.badge.state-no_source {
  color: var(--ink-faint);
}

.badge.state-ready {
  color: var(--indigo);
  border-color: var(--indigo-soft);
  background: var(--indigo-soft);
}

.badge.state-translating {
  color: var(--warn);
  border-color: #ead9b8;
  background: #f7eeda;
}

.badge.state-draft_available {
  color: var(--warn);
  border-color: #ead9b8;
  background: #f7eeda;
}

.badge.state-in_review {
  color: var(--indigo-deep);
  border-color: var(--indigo-soft);
  background: var(--indigo-soft);
}

.badge.state-approved {
  color: var(--ok);
  border-color: #c4d8cc;
  background: #e4efe8;
}

.badge.state-exported {
  color: var(--ok);
  border-color: #c4d8cc;
  background: #e4efe8;
}

.badge.state-failed {
  color: var(--vermilion);
  border-color: #e8c8c0;
  background: #f6e4df;
}

/* ---------- Forms & controls ---------- */

button,
.btn {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  min-height: var(--tap);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--indigo);
  background: var(--indigo);
  color: #fff;
  cursor: pointer;
}

button:hover,
.btn:hover {
  background: var(--indigo-deep);
  border-color: var(--indigo-deep);
  color: #fff;
}

.btn-secondary,
button.secondary {
  background: var(--paper-raised);
  color: var(--indigo);
}

.btn-secondary:hover,
button.secondary:hover {
  background: var(--indigo-soft);
  color: var(--indigo-deep);
}

.btn-danger,
button.danger {
  background: transparent;
  border-color: var(--vermilion);
  color: var(--vermilion);
}

.btn-danger:hover,
button.danger:hover {
  background: var(--vermilion);
  color: #fff;
}

.btn-quiet {
  font-size: 0.85rem;
  min-height: var(--tap);
  padding: 0.35rem 0.85rem;
}

form.inline {
  display: inline;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin: 0.9rem 0;
}

.search-form {
  display: flex;
  gap: 0.5rem;
  margin: 0.9rem 0;
}

.search-form input[type="search"] {
  flex: 1;
}

input[type="search"],
input[type="text"],
textarea,
select {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 0.7rem;
  min-height: var(--tap);
}

textarea {
  width: 100%;
  min-height: 55vh;
  font-family: var(--font-read);
  font-size: 1.02rem;
  line-height: 1.8;
  resize: vertical;
}

select {
  appearance: none;
  padding-right: 2rem;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%),
    linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 1rem) 55%, calc(100% - 0.65rem) 55%;
  background-size: 0.32rem 0.32rem, 0.32rem 0.32rem;
  background-repeat: no-repeat;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1rem;
}

.filter-chips a {
  font-size: 0.8rem;
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  text-decoration: none;
}

.filter-chips a[aria-current="true"] {
  background: var(--indigo);
  border-color: var(--indigo);
  color: #fff;
}

/* ---------- Tabs ---------- */

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--indigo);
  margin: 1.2rem 0 0;
  overflow-x: auto;
}

.tab {
  appearance: none;
  background: transparent;
  border: none;
  border-radius: 0;
  min-height: 2.7rem;
  padding: 0.5rem 0.95rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 0;
}

.tab:hover {
  background: var(--indigo-soft);
  color: var(--indigo-deep);
}

.tab[aria-selected="true"] {
  color: var(--indigo-deep);
  font-weight: 600;
  background: var(--indigo-soft);
}

.panel {
  padding-top: 1rem;
}

/* ---------- Autosave & conflict ---------- */

.save-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.save-status[data-state="saving"] {
  color: var(--warn);
}

.save-status[data-state="saved"] {
  color: var(--ok);
}

.save-status[data-state="error"] {
  color: var(--vermilion);
}

.notice {
  border-left: 3px solid var(--indigo);
  background: var(--indigo-soft);
  padding: 0.7rem 0.95rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin: 0.8rem 0;
}

.notice.warn {
  border-left-color: var(--vermilion);
  background: #f6e4df;
}

.conflict {
  border: 1px solid var(--vermilion);
  border-radius: var(--radius);
  margin: 0.9rem 0;
  background: var(--paper-raised);
}

.conflict > summary {
  cursor: pointer;
  padding: 0.7rem 0.95rem;
  font-weight: 600;
  color: var(--vermilion);
}

.conflict-body {
  padding: 0 0.95rem 0.9rem;
}

.conflict-side {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  margin: 0.5rem 0;
}

.conflict-side h3 {
  margin: 0;
  padding: 0.4rem 0.7rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--paper);
  border-bottom: 1px solid var(--line-soft);
}

.conflict-side pre {
  margin: 0;
  padding: 0.6rem 0.7rem;
  font-family: var(--font-read);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 14rem;
  overflow-y: auto;
  font-size: 0.95rem;
}

/* ---------- Diff ---------- */

.diff {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  background: var(--paper-raised);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 0.6rem 0;
  overflow-x: auto;
}

.diff .line {
  white-space: pre-wrap;
  padding: 0 0.7rem;
}

.diff .line.ctx {
  color: var(--ink-soft);
}

.diff .line.add {
  background: #e4efe8;
  color: var(--ok);
}

.diff .line.del {
  background: #f6e4df;
  color: var(--vermilion);
}

.diff .line.hunk {
  color: var(--indigo);
  padding-top: 0.4rem;
}

/* ---------- Details / technical ---------- */

details.tech {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--paper-raised);
  margin: 1.2rem 0;
}

details.tech > summary {
  cursor: pointer;
  padding: 0.65rem 0.95rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

details.tech[open] > summary {
  border-bottom: 1px solid var(--line-soft);
}

details.tech dl {
  margin: 0;
  padding: 0.7rem 0.95rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.3rem 1rem;
  font-size: 0.85rem;
}

details.tech dt {
  color: var(--ink-faint);
}

details.tech dd {
  margin: 0;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  word-break: break-all;
}

/* ---------- Notices & empty states ---------- */

.empty {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.2rem;
  text-align: center;
  color: var(--ink-soft);
  margin: 1rem 0;
}

.empty .hint {
  font-size: 0.88rem;
  color: var(--ink-faint);
  margin-top: 0.4rem;
}

.error-page {
  max-width: 40rem;
}

.error-page .code {
  font-family: var(--font-read);
  font-size: 3rem;
  color: var(--indigo);
  line-height: 1;
  margin: 1.5rem 0 0.5rem;
}

.flash {
  border-left: 3px solid var(--ok);
  background: #e4efe8;
  color: var(--ok);
  border-radius: var(--radius);
  padding: 0.65rem 0.95rem;
  margin: 0.8rem 0;
  font-size: 0.92rem;
}

/* ---------- Run selector ---------- */

.run-picker .choice {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--line-soft);
}

.run-picker .ord {
  font-family: var(--font-read);
  font-size: 1.3rem;
  color: var(--indigo);
  min-width: 1.6rem;
  text-align: center;
  border: 1px solid var(--indigo-soft);
  border-radius: var(--radius);
  background: var(--indigo-soft);
}

/* ---------- Wide screens ---------- */

@media (min-width: 50rem) {
  .shell {
    max-width: 52rem;
    padding-bottom: 7rem;
  }

  textarea {
    min-height: 32rem;
  }

  /* Belt and suspenders with app.js: if a cached script sets data-active
     without unhiding the panel, the grid would render an empty column. */
  .chapter-grid[data-active="edit"],
  .chapter-grid[data-active="preview"] {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    align-items: start;
  }

  .chapter-grid[data-active="edit"] #panel-source,
  .chapter-grid[data-active="preview"] #panel-source {
    display: block;
  }

  .shell:has(.chapter-grid[data-active="edit"]),
  .shell:has(.chapter-grid[data-active="preview"]) {
    max-width: 72rem;
  }
}

@media (min-width: 80rem) {
  .shell:has(.chapter-grid[data-active="edit"]),
  .shell:has(.chapter-grid[data-active="preview"]) {
    max-width: 110rem;
  }
}

/* ---------- Top navigation ---------- */

.masthead .topnav {
  display: flex;
  gap: 0.9rem;
  margin-left: auto;
  font-size: 0.9rem;
}

.masthead .logout {
  margin: 0;
}

/* ---------- Forms (translate, sign-in) ---------- */

input[type="number"],
input[type="password"],
input[type="file"] {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 0.7rem;
  min-height: var(--tap);
}

form.card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

form.card label {
  font-weight: 600;
  margin-top: 0.4rem;
}

form.card fieldset {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem;
  margin-top: 0.6rem;
  min-width: 0;
}

form.card .choice {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-weight: 400;
  margin-top: 0.45rem;
}

form.card input[type="radio"] {
  min-height: 1.2rem;
  min-width: 1.2rem;
  flex-shrink: 0;
}

form.card input[type="file"] {
  max-width: 100%;
}

form.card select {
  max-width: 100%;
}

@media (max-width: 30rem) {
  .masthead {
    flex-wrap: wrap;
  }

  .masthead .tagline {
    display: none;
  }
}