:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1d2433;
  --muted: #6b7489;
  --line: #e3e7ef;
  --primary: #3b5bdb;
  --primary-dark: #2f4ac0;
  --ok: #2b8a3e;     --ok-bg: #e6f6ea;
  --warn: #b26a00;   --warn-bg: #fff4e0;
  --danger: #c92a2a; --danger-bg: #fdecec;
  --info: #1971c2;   --info-bg: #e7f1fc;
  --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: .2em 0 .4em; }
h2 { font-size: 1.15rem; margin: 0 0 .8em; }
h3 { font-size: .95rem; margin: 1.2em 0 .5em; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 40px; min-height: 70vh; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.mt { margin-top: .6em; }
.inline { display: inline; margin: 0; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.grow { flex: 1; }

/* Top bar */
.topbar { background: #1d2433; color: #fff; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 58px; flex-wrap: wrap; gap: 8px; }
.brand { color: #fff; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.brand:hover { text-decoration: none; }
.logo { background: var(--primary); border-radius: 8px; padding: 4px 7px; font-size: .8rem; letter-spacing: .5px; }
.nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.nav a { color: #cfd6e6; }
.nav .who { color: #fff; }
.nav .who small { color: #9aa4ba; margin-left: 4px; }
.nav .btn-ghost { color: #cfd6e6; border-color: #3a4459; }

/* Cards & layout */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.card.highlight { border-color: #c5d0f5; box-shadow: 0 0 0 3px #eef2ff; }
.hero h1 { margin-top: 0; }
.auth-card { max-width: 460px; margin: 30px auto; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .grid-2 { grid-template-columns: 1fr; } }
.crumbs { font-size: .85rem; color: var(--muted); margin: 0 0 6px; }
.footer { color: var(--muted); font-size: .8rem; padding-bottom: 24px; }

/* Forms */
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 5px; font-weight: 500; font-size: .92rem; }
input[type=text], input[type=email], input[type=password], input[type=search], input:not([type]), textarea, select {
  font: inherit; padding: 9px 11px; border: 1px solid #ccd3e0; border-radius: 8px; background: #fff; width: 100%;
}
input:focus, textarea:focus { outline: 2px solid #c5d0f5; border-color: var(--primary); }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
legend { font-weight: 500; padding: 0 6px; }
.checklist { max-height: 240px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; padding: 6px; margin: 8px 0; }
.check { flex-direction: row !important; align-items: center; gap: 8px !important; font-weight: 400 !important; padding: 5px 6px; border-radius: 6px; cursor: pointer; }
.check:hover { background: var(--bg); }
.filter { margin-top: 6px; }
details summary { cursor: pointer; color: var(--primary); margin: 10px 0; font-size: .92rem; }

/* Buttons */
.btn { display: inline-block; font: inherit; font-weight: 500; padding: 8px 15px; border-radius: 8px; border: 1px solid #ccd3e0;
       background: #fff; color: var(--text); cursor: pointer; text-decoration: none !important; }
.btn:hover { background: #f1f3f8; }
.btn:disabled { opacity: .4; cursor: default; }
.btn-sm { padding: 5px 11px; font-size: .85rem; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn-success:hover { background: #237032; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #a82222; }
.btn-ghost { background: transparent; }
.btn.danger { color: var(--danger); }
.form > .btn { align-self: flex-start; }

/* Alerts & badges */
.alert { padding: 11px 14px; border-radius: 8px; margin-bottom: 16px; border: 1px solid transparent; }
.alert-success { background: var(--ok-bg); color: var(--ok); border-color: #bfe5c8; }
.alert-error { background: var(--danger-bg); color: var(--danger); border-color: #f5c2c2; }
.alert-warn { background: var(--warn-bg); color: var(--warn); border-color: #f5d9a8; }
.alert-info { background: var(--info-bg); color: var(--info); border-color: #bcd8f5; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: .75rem; font-weight: 600; white-space: nowrap; }
.badge-approved { background: var(--ok-bg); color: var(--ok); }
.badge-pending { background: var(--warn-bg); color: var(--warn); }
.badge-changes_requested { background: var(--danger-bg); color: var(--danger); }
.badge-open { background: var(--info-bg); color: var(--info); }
.badge-locked { background: #eef0f4; color: #8a92a5; }
.tag { font-size: .7rem; background: #1d2433; color: #fff; padding: 1px 7px; border-radius: 4px; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; color: var(--muted); font-size: .9rem; }
.stat span { display: block; font-size: 1.9rem; font-weight: 700; color: var(--text); line-height: 1.2; }
a.stat:hover { text-decoration: none; border-color: var(--primary); }
.stat-warn span { color: var(--warn); }
.stat-danger span { color: var(--danger); }
.stat-ok span { color: var(--ok); }

/* Tables */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: .78rem; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.table td { padding: 11px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }

/* Progress bar */
.bar { height: 7px; background: #e9ecf3; border-radius: 99px; overflow: hidden; min-width: 80px; }
.bar i { display: block; height: 100%; background: var(--ok); border-radius: 99px; }
.bar-lg { height: 10px; margin-top: 14px; }

/* Chapter timeline */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { position: relative; padding: 0 0 18px 30px; }
.timeline li::before { content: ""; position: absolute; left: 7px; top: 18px; bottom: 0; width: 2px; background: var(--line); }
.timeline li:last-child::before { display: none; }
.tl-dot { position: absolute; left: 0; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid #cdd3df; }
.tl-approved .tl-dot { background: var(--ok); border-color: var(--ok); }
.tl-pending .tl-dot { border-color: var(--warn); }
.tl-changes_requested .tl-dot { border-color: var(--danger); }
.tl-open .tl-dot { border-color: var(--info); }
.tl-current .tl-body { background: #f7f9ff; border: 1px solid #dfe5fa; border-radius: 8px; padding: 10px 12px; margin-top: -6px; }

/* People */
.people, .plain { list-style: none; margin: 0; padding: 0; }
.people li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; border-bottom: 1px solid var(--line); }
.people li:last-child { border-bottom: 0; }
.plain li { padding: 6px 0; }
.avatar { flex: none; width: 34px; height: 34px; border-radius: 50%; background: #dfe5fa; color: var(--primary); display: grid; place-items: center; font-size: .8rem; font-weight: 700; }
.invite { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.invite:last-child { border-bottom: 0; }

/* Discussion */
.thread { list-style: none; margin: 0 0 16px; padding: 0; }
.msg { display: flex; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.msg-sup .avatar { background: #1d2433; color: #fff; }
.msg-body { flex: 1; min-width: 0; }
.msg-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.msg-text { margin-top: 4px; white-space: normal; overflow-wrap: anywhere; }
.event { font-size: .8rem; font-weight: 600; padding: 1px 8px; border-radius: 4px; }
.event-submitted { background: var(--info-bg); color: var(--info); }
.event-changes_requested { background: var(--danger-bg); color: var(--danger); }
.event-approved { background: var(--ok-bg); color: var(--ok); }
.msg-changes_requested .msg-body { background: #fff8f8; border-left: 3px solid var(--danger); padding: 8px 12px; border-radius: 6px; }
.msg-approved .msg-body { background: #f5fbf6; border-left: 3px solid var(--ok); padding: 8px 12px; border-radius: 6px; }
.file { display: inline-block; margin-top: 6px; margin-right: 8px; padding: 5px 10px; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; font-size: .88rem; }
.reply { border-top: 1px solid var(--line); padding-top: 14px; gap: 10px; }
.versions li { border-bottom: 1px solid var(--line); padding: 8px 0; }
.versions li:last-child { border-bottom: 0; }
.stage-nav li { padding: 6px 8px; border-radius: 6px; }
.stage-nav li.active { background: #eef2ff; }

/* Chapter admin */
.stage-admin { list-style: none; margin: 0; padding: 0; }
.stage-admin li { border-bottom: 1px solid var(--line); padding: 10px 0; }
.stage-admin li:last-child { border-bottom: 0; }
.stage-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.stage-row .grow { display: flex; flex-direction: column; gap: 6px; min-width: 220px; }
.num { width: 28px; height: 28px; border-radius: 50%; background: #eef2ff; color: var(--primary); display: grid; place-items: center; font-weight: 700; font-size: .85rem; }

/* Partner picker */
.partner-picker { display: flex; flex-direction: column; gap: 8px; }
.picker-results { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.picker-results:empty { display: none; }
.picker-item { display: block; width: 100%; text-align: left; font: inherit; padding: 8px 12px; border: 0; border-bottom: 1px solid var(--line); background: #fff; cursor: pointer; }
.picker-item:last-child { border-bottom: 0; }
.picker-item:hover { background: #eef2ff; }
.pad { padding: 8px 12px; }
.picker-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 4px; background: #eef2ff; color: var(--primary-dark); border-radius: 99px; padding: 3px 4px 3px 11px; font-size: .85rem; }
.chip button { border: 0; background: transparent; color: inherit; font-size: 1rem; cursor: pointer; padding: 0 6px; line-height: 1; }