:root {
  --yes: #1a9e5f; --no: #d64545; --maybe: #d9a01e; --ink: #1c2333;
  --bg: #f4f5f8; --card: #fff; --line: #dfe3ea;
  --shadow: 0 6px 24px rgba(20,30,60,.12);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: #2c5cc5; text-decoration: none; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: .6rem 1rem; background: #fff; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; letter-spacing: -.02em; }
.topbar nav { display: flex; gap: 1rem; align-items: center; }
.who { color: #667; font-size: .9rem; }
main { max-width: 720px; margin: 0 auto; padding: 1rem; }

/* login */
.login { max-width: 380px; margin: 3rem auto; }
.login label, .admin label { display: block; margin: 1rem 0 .3rem; font-weight: 600; }
.login input, .admin input, .admin select {
  width: 100%; padding: .6rem; border: 1px solid var(--line); border-radius: 8px;
  font-size: 1rem;
}
.hint { color: #778; font-size: .85rem; }
.error { color: var(--no); font-weight: 600; }
.ok { color: var(--yes); font-weight: 600; }
button {
  cursor: pointer; border: none; border-radius: 8px; padding: .7rem 1.2rem;
  font-size: 1rem; font-weight: 600; background: var(--ink); color: #fff; margin-top: 1rem;
}

/* home */
.home h1 { margin-bottom: .2rem; }
.mode { color: #667; margin-top: 0; }
.stage h2 { border-bottom: 1px solid var(--line); padding-bottom: .3rem; }
.queues { display: flex; gap: 1rem; flex-wrap: wrap; }
.queue-card {
  flex: 1 1 160px; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; padding: 1.2rem; text-align: center; color: var(--ink);
  display: flex; flex-direction: column; gap: .3rem;
}
.queue-card.ready { border-color: var(--yes); box-shadow: var(--shadow); }
.queue-card.done { opacity: .55; }
.queue-card .big { font-size: 2.2rem; font-weight: 800; }

/* screening card */
.screen-wrap { max-width: 560px; margin: 0 auto; text-align: center; touch-action: pan-y; }
.progress { color: #778; font-size: .85rem; margin: .3rem 0 1rem; }
.card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; box-shadow: var(--shadow); text-align: left;
  overflow: hidden; user-select: none;
}
.card.dragging { transition: none; }
.card.animating { transition: transform .3s ease, opacity .3s ease; }
.card-inner { padding: 1.4rem; max-height: 62vh; overflow-y: auto; }
.title { margin: .2rem 0 .1rem; font-size: 1.2rem; line-height: 1.3; }
.meta { color: #667; font-size: .85rem; margin: .2rem 0; }
.authors { color: #778; font-size: .82rem; font-style: italic; margin: .2rem 0 .7rem; }
.abstract { font-size: .96rem; }
.doi { margin-top: 1rem; font-size: .85rem; }
.stamp {
  position: absolute; top: 18px; padding: .2rem .7rem; font-weight: 800;
  font-size: 1.4rem; border: 4px solid; border-radius: 8px; opacity: 0;
  transform: rotate(-14deg); pointer-events: none; z-index: 3;
}
.stamp.yes { right: 18px; color: var(--yes); border-color: var(--yes); }
.stamp.no { left: 18px; color: var(--no); border-color: var(--no); transform: rotate(14deg); }
.stamp.maybe { left: 50%; transform: translateX(-50%) rotate(-6deg); top: 8px;
  color: var(--maybe); border-color: var(--maybe); }

.priorvotes { margin-top: 1.2rem; border-top: 1px dashed var(--line); padding-top: .8rem; }
.priorvotes h3 { font-size: .8rem; text-transform: uppercase; color: #778; margin: 0 0 .5rem; }
.pv { display: grid; grid-template-columns: 90px 90px 1fr; gap: .4rem;
  align-items: baseline; padding: .3rem 0; font-size: .85rem; border-top: 1px solid #f0f1f4; }
.pv .rv { font-weight: 700; }
.pv .dv { font-weight: 700; }
.pv-yes .dv, .pv-include .dv { color: var(--yes); }
.pv-no .dv, .pv-exclude .dv { color: var(--no); }
.pv-maybe .dv { color: var(--maybe); }
.pv .rat { color: #556; }

.buttons { display: flex; gap: .8rem; justify-content: center; margin-top: 1.1rem; }
.btn { min-width: 96px; }
.btn small { opacity: .7; font-weight: 500; }
.btn.yes { background: var(--yes); }
.btn.no { background: var(--no); }
.btn.maybe { background: var(--maybe); }
.btn.skip { background: #8a93a6; min-width: auto; padding: .4rem 1rem; }
.skiprow { margin-top: .6rem; display: flex; gap: 1rem; align-items: center; justify-content: center; }
.kbd { color: #99a; font-size: .78rem; }

.empty { text-align: center; margin-top: 3rem; }
.status .kv { border-collapse: collapse; width: 100%; margin: .5rem 0 1.5rem; }
.status .kv td { padding: .4rem .6rem; border-bottom: 1px solid var(--line); }
.status .kv td:last-child { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.admin section { background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 1rem 1.2rem; margin: 1rem 0; }
.admin .inline { display: inline-flex; gap: .6rem; align-items: flex-end; flex-wrap: wrap; }
.admin form.inline button { margin-top: 0; }
code { background: #eef0f4; padding: .1rem .3rem; border-radius: 4px; }

/* study picker */
.studies { max-width: 560px; margin: 1rem auto; }
.studylist { list-style: none; padding: 0; }
.studylist li { margin: .6rem 0; }
.studybtn { width: 100%; text-align: left; background: #fff; color: var(--ink);
  border: 1px solid var(--line); border-radius: 12px; padding: 1rem; margin: 0;
  display: flex; flex-direction: column; gap: .2rem; }
.studybtn:hover { border-color: var(--yes); box-shadow: var(--shadow); }
.stitle { font-weight: 700; font-size: 1.05rem; }
.smeta { color: #778; font-size: .85rem; }
.newstudy-link, a.newstudy { display: inline-block; margin-top: 1rem; }

/* new-study form */
.newstudy { max-width: 640px; margin: 0 auto; }
.newstudy h2 { border-bottom: 1px solid var(--line); padding-bottom: .3rem; margin-top: 1.6rem; }
.newstudy label { display: block; margin: .8rem 0 .3rem; font-weight: 600; }
.newstudy input, .newstudy select, .newstudy textarea {
  width: 100%; padding: .55rem; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.crit { border: 1px solid var(--line); border-radius: 10px; padding: .6rem;
  margin: .5rem 0; display: grid; gap: .4rem; }
.crit input:nth-child(1) { max-width: 260px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem 1rem; }
@media (max-width: 520px) { .grid2 { grid-template-columns: 1fr; } }
.addrow { margin: .2rem 0 0; }
.cancel { margin-left: 1rem; color: #778; }

.spath { color: #99a; font-size: .72rem; word-break: break-all; }
.openfolder { margin-top: 1.5rem; }
.openfolder summary { cursor: pointer; color: #556; font-size: .9rem; }
.openfolder form { display: flex; gap: .5rem; margin-top: .6rem; }
.openfolder input { flex: 1; padding: .5rem; border: 1px solid var(--line); border-radius: 8px; }
.openfolder button { margin-top: 0; }