:root {
  --navy: #1c3e58;
  --navy-deep: #142e42;
  --sky: #4ea9f0;
  --coral: #f0624e;
  --ink: #22303a;
  --muted: #4a5a66;
  --faint: #75858f;
  --ground: #f2f5f8;
  --paper: #ffffff;
  --line: #dce4eb;
  --good: #2f7d52;
  --good-bg: #eaf4ee;
  --accent-soft: #e8f4fc;
  --shadow: 0 1px 2px rgba(20, 46, 66, 0.08);
  --font: "Jost", "Segoe UI", system-ui, sans-serif;
  --display: "Archivo", "Segoe UI", system-ui, sans-serif;
  --tree-w: 20.5rem;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--ground);
  line-height: 1.45;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.brand-bar {
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: #fff;
  padding: 0.65rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1.25rem;
}
.logo-link { display: flex; align-items: center; }
.logo {
  display: block;
  height: 52px;
  width: auto;
}
.brand-sub {
  margin: 0;
  font-size: 0.72rem;
  color: #b9cbd9;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-right: auto;
}
.header-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
}
.who-inline {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: #b9cbd9;
}
.who-inline select {
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  padding: 0.45rem 2.1rem 0.45rem 0.65rem;
  border-radius: 6px;
  border: 0;
  min-width: 9.5rem;
  background-color: #fff;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%231C3E58' d='M1 1l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.65rem center;
  appearance: none;
  -webkit-appearance: none;
}
.header-tools .count {
  margin: 0;
  font-size: 0.85rem;
  color: #d5e3ee;
  white-space: nowrap;
}

.tools {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0.85rem 1.5rem 0.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  align-items: flex-end;
}
.who-block, .auth-block, .progress-block {
  flex: 1 1 14rem;
  min-width: 12rem;
}
.who-block label,
.auth-form label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.who-block select {
  display: block;
  width: 100%;
  max-width: 16rem;
  font: inherit;
  font-size: 1rem;
  line-height: 1.3;
  padding: 0.7rem 2.4rem 0.7rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background-color: var(--paper);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%231C3E58' d='M1 1l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  appearance: none;
  -webkit-appearance: none;
}

.auth-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.55rem;
}
.auth-status {
  margin: 0;
  font-size: 0.8rem;
  color: #d5e3ee;
  max-width: 14rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.auth-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}
.auth-form[hidden] { display: none; }
.auth-form input {
  width: 13rem;
  font: inherit;
  padding: 0.45rem 0.65rem;
  border: 0;
  border-radius: 6px;
}
.auth-form button, #auth-out {
  font: inherit;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  border: 0;
  background: var(--sky);
  color: var(--navy-deep);
  cursor: pointer;
  white-space: nowrap;
}
#auth-out {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
}

.progress-block .meter {
  height: 10px;
  background: #dce4eb;
  border-radius: 999px;
  overflow: hidden;
}
.progress-block .fill {
  height: 100%;
  width: 0%;
  background: var(--sky);
  transition: width 0.2s ease;
}
.progress-block .count { margin: 0.4rem 0 0; font-size: 0.95rem; }
.progress-block .hint { color: var(--muted); font-size: 0.8rem; font-weight: 400; }

.local-note {
  margin: 0;
  padding: 0.25rem 1.25rem;
  font-size: 0.8rem;
  color: var(--stop, #b3392a);
  min-height: 0;
}
.local-note:empty { display: none; }

.workspace {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr;
  max-width: 1400px;
  width: calc(100% - 3rem);
  margin: 16px auto 16px;
  padding: 0;
  gap: 0;
  min-height: 28rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--shadow);
}
@media (min-width: 720px) {
  .workspace {
    grid-template-columns: minmax(15rem, 18rem) minmax(0, 1fr);
    min-height: calc(100vh - 14rem);
  }
}
@media (min-width: 1040px) {
  .workspace {
    grid-template-columns: minmax(15rem, 17rem) minmax(0, 1.7fr) minmax(16rem, 20rem);
  }
}

.tree {
  background: #f7fafc;
  border-bottom: 1px solid var(--line);
  overflow: auto;
  max-height: 50vh;
  padding: 0.5rem 0;
}
@media (min-width: 720px) {
  .tree {
    border-bottom: 0;
    border-right: 1px solid var(--line);
    max-height: none;
  }
}
.tree-head {
  margin: 0 0.85rem 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}
.folder { margin: 0; }
.folder-toggle, .file-btn {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
}
.folder-toggle {
  padding: 0.55rem 0.85rem;
  font-weight: 650;
}
.folder-toggle:hover, .file-btn:hover { background: #eef4f8; }
.folder.open > .folder-toggle { background: #e8f0f6; }
.chev {
  width: 0.9rem;
  color: var(--faint);
  flex: 0 0 auto;
  transition: transform 0.15s ease;
}
.folder.open > .folder-toggle .chev { transform: rotate(90deg); }
.folder-title { flex: 1; }
.folder-meta {
  font-size: 0.72rem;
  color: var(--faint);
  font-weight: 500;
  white-space: nowrap;
}
.files { display: none; padding: 0 0 0.25rem 0; }
.folder.open > .files { display: block; }
.file-btn {
  padding: 0.45rem 0.85rem 0.45rem 1.85rem;
  font-size: 0.9rem;
  flex-wrap: wrap;
  align-items: center;
}
.file-btn.is-on {
  background: var(--accent-soft);
  box-shadow: inset 3px 0 0 var(--sky);
}
.file-btn.is-done .file-id { color: var(--good); }
.file-id {
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--navy);
  min-width: 1.7rem;
}
.file-title { flex: 1 1 8rem; min-width: 0; }
.file-state {
  font-size: 0.68rem;
  color: var(--muted);
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  background: #eef2f5;
}
.file-btn.is-done .file-state { color: var(--good); background: var(--good-bg); }
.file-btn.is-ref .file-state { background: #eef2ff; color: #3730a3; }

.pane {
  overflow: auto;
  padding: 1.25rem 1.4rem 2rem;
  background: var(--paper);
  min-width: 0;
}
.thread {
  background: #f7fafc;
  border-top: 1px solid var(--line);
  overflow: auto;
  padding: 0.75rem 0.85rem 1.25rem;
}
@media (min-width: 1040px) {
  .thread {
    border-top: 0;
    border-left: 1px solid var(--line);
  }
}
.thread .tree-head { margin: 0 0 0.65rem; }
.thread-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.65rem;
}
.thread-card.is-on { box-shadow: inset 3px 0 0 var(--sky); }
.comment-remove {
  float: right;
  font: inherit;
  font-size: 0.75rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-decoration: underline;
}
.thread-quote {
  margin: 0 0 0.4rem;
  padding: 0.2rem 0 0.2rem 0.5rem;
  border-left: 3px solid var(--sky);
  color: var(--muted);
  font-size: 0.82rem;
}
.c-mark {
  background: #fff3b0;
  cursor: pointer;
}
.c-mark.is-on { background: #ffe066; }
.sel-comment {
  position: absolute;
  z-index: 40;
  font: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.35rem 0.7rem;
  border: 0;
  border-radius: 6px;
  background: var(--navy);
  color: #fff;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.pane-kicker {
  margin: 0 0 0.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}
.pane h2 {
  margin: 0 0 0.75rem;
  font-family: var(--display);
  font-size: 1.35rem;
}
.loading, .error, .empty {
  color: var(--muted);
  padding: 1.25rem;
}

.proc-facts {
  margin: 0 0 0.75rem;
  padding: 0.65rem 0.75rem;
  background: var(--ground);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}
.proc-facts span + span::before {
  content: " · ";
  color: var(--faint);
}
.proc-body { font-size: 0.98rem; }
.proc-body ol, .proc-body ul { padding-left: 1.2rem; }
.proc-body li { margin: 0.35rem 0; }
.proc-body .note, .proc-body .wording {
  margin: 0.75rem 0;
  padding: 0.7rem 0.8rem;
  background: var(--accent-soft);
  border-left: 3px solid var(--sky);
  border-radius: 0 8px 8px 0;
}
.proc-body code {
  font-size: 0.88em;
  background: var(--ground);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
}
.proc-body a { color: var(--navy); }
.id-ref {
  display: inline;
  margin: 0;
  padding: 0 0.12em;
  border: 0;
  background: transparent;
  color: var(--navy);
  font: inherit;
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.id-ref:hover { color: var(--sky); }

.done-row {
  margin-top: 1.1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.done-row input { width: 1.15rem; height: 1.15rem; }
.done-row label { font-weight: 600; }

.comments {
  margin-top: 1rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fafc;
}
.comments h4 { margin: 0 0 0.35rem; font-size: 0.9rem; }
.comments p { margin: 0; font-size: 0.85rem; color: var(--muted); }
.comment-list { list-style: none; margin: 0.5rem 0; padding: 0; }
.comment-list li { margin: 0.4rem 0; font-size: 0.9rem; }
.comment-list .who { font-weight: 650; }
.comment-list .when { color: var(--muted); font-size: 0.75rem; margin-left: 0.35rem; }
.comment-compose { display: flex; gap: 0.4rem; margin-top: 0.5rem; }
.comment-compose textarea {
  flex: 1;
  font: inherit;
  min-height: 3rem;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.comment-compose button {
  font: inherit;
  font-weight: 600;
  border: 0;
  background: var(--navy);
  color: #fff;
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}
.tag-hit { background: var(--accent-soft); padding: 0 0.15rem; border-radius: 3px; }

.site-footer {
  background: var(--navy-deep);
  color: #b9cbd9;
  padding: 0.85rem 1.25rem 1rem;
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}
.logo-foot {
  height: 36px;
  width: auto;
}
.footer-line {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  max-width: 40rem;
}