:root {
  --need: #e7ebef;  --need-fg: #58616b;
  --have: #2f7d4f;  --have-fg: #fff;
  --dup:  #d9821a;  --dup-fg:  #fff;
  --line: #d9dee3;  --bg: #f6f7f9;  --fg: #1c2430;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
.hidden { display: none !important; }
.muted { color: #6b7480; }

/* Login / prompt cards */
.screen.center, #login, #name-prompt { min-height: 100dvh; display: flex; align-items: center; justify-content: center; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 2rem; max-width: 24rem; width: calc(100% - 2rem); text-align: center;
}
.card h1 { margin: 0 0 .25rem; }
form { display: flex; flex-direction: column; gap: .6rem; margin-top: 1rem; }
input, select, button { font: inherit; }
input[type=email], input[type=text] {
  padding: .6rem .7rem; border: 1px solid var(--line); border-radius: 8px;
}
button {
  padding: .6rem .8rem; border: 0; border-radius: 8px; background: #1c6cf0; color: #fff;
  cursor: pointer;
}
button.link { background: none; color: #1c6cf0; padding: .3rem; }
button:active { transform: translateY(1px); }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: .6rem;
  background: #fff; border-bottom: 1px solid var(--line); padding: .55rem .8rem;
}
.topbar .spacer { flex: 1; }
.topbar select { padding: .35rem .5rem; border: 1px solid var(--line); border-radius: 8px; }

/* Progress */
.progress-wrap { background: #fff; border-bottom: 1px solid var(--line); padding: .6rem .8rem; }
.progress-bar { height: 10px; background: var(--need); border-radius: 6px; overflow: hidden; }
#progress-fill { height: 100%; width: 0; background: var(--have); transition: width .2s; }
#progress-text { margin-top: .3rem; }
.legend { display: flex; align-items: center; gap: .4rem; margin-top: .4rem; flex-wrap: wrap; font-size: 13px; }
.legend .sample { width: 16px; height: 16px; padding: 0; }
.legend .hint { margin-left: auto; font-style: italic; color: #8a929c; }

/* Grid */
main#grid { padding: .6rem .8rem 4rem; }
.team-section { margin-bottom: 1.1rem; }
.team-section h2 {
  font-size: 14px; margin: .8rem 0 .4rem; position: sticky; top: 44px;
  background: var(--bg); padding: .2rem 0;
}
.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: .35rem; }

.chip {
  border: 1px solid var(--line); border-radius: 8px; background: var(--need); color: var(--need-fg);
  padding: .35rem .25rem; text-align: center; cursor: pointer; user-select: none;
  display: flex; flex-direction: column; gap: 2px; min-height: 46px; justify-content: center;
}
.chip .code { font-weight: 600; font-size: 12px; }
.chip .nm { font-size: 9.5px; line-height: 1.05; overflow: hidden; max-height: 2.1em; }
.chip.have { background: var(--have); color: var(--have-fg); border-color: transparent; }
.chip.dup  { background: var(--dup);  color: var(--dup-fg);  border-color: transparent; }
.chip .dupctl { display: flex; align-items: center; justify-content: center; gap: .3rem; margin-top: 2px; }
.chip .dupctl button {
  background: rgba(255,255,255,.25); color: #fff; border-radius: 6px; padding: 0 .35rem;
  line-height: 1.4; font-weight: 700;
}
.chip .dupctl .n { font-size: 11px; font-weight: 700; }

/* Tabs */
.tabs { display: flex; gap: .25rem; margin-left: .5rem; }
.tab { background: none; color: var(--fg); padding: .35rem .7rem; border-radius: 8px; }
.tab.active { background: #eaf1fe; color: #1c6cf0; }

/* Matches */
.pad { padding: 1rem .9rem; }
.empty.pad .chip.sample { display: inline-block; vertical-align: middle; }
#matches { padding: .7rem .8rem 4rem; }
.match-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: .8rem; overflow: hidden; }
.match-head {
  display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap;
  padding: .6rem .8rem; border-bottom: 1px solid var(--line); background: #fbfcfd;
}
.match-head .partner { font-weight: 700; font-size: 16px; }
.match-cols { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; padding: .7rem .8rem; }
@media (max-width: 560px) { .match-cols { grid-template-columns: 1fr; } }
.col h4 { margin: 0 0 .45rem; font-size: 13px; color: #58616b; }
.swap-list { display: flex; flex-wrap: wrap; gap: .3rem; }
.swap {
  font-size: 12px; padding: .2rem .4rem; border-radius: 6px; border: 1px solid var(--line);
  background: var(--need); max-width: 100%;
}
.swap.in  { background: #eaf6ee; border-color: #bfe3cb; }  /* coming to you */
.swap.out { background: #fdf0e1; border-color: #f0d2a8; }  /* leaving you */
.swap b { font-weight: 700; }

/* Admin */
.admin-wrap { padding: .8rem; display: grid; gap: .8rem; max-width: 720px; }
.admin-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 1rem; }
.admin-card h3 { margin: 0 0 .2rem; }
.admin-card .row { flex-direction: row; gap: .4rem; }
.admin-card .row input { flex: 1; }
.admin-card .row button { width: auto; }
.admin-row {
  display: flex; align-items: center; justify-content: space-between; gap: .6rem;
  padding: .45rem 0; border-top: 1px solid var(--line);
}
.admin-row:first-of-type { border-top: 0; }
.member-ctrl { display: flex; align-items: center; gap: .6rem; }
.cb { font-size: 13px; color: #58616b; white-space: nowrap; }
.member-ctrl button { padding: .3rem .6rem; }
button.link.danger { color: #c0392b; }
#allowlist { margin-top: .6rem; }