:root{
  --bg: #EDEFE8;
  --bg-panel: #F7F8F3;
  --ink: #16241F;
  --ink-soft: #4C594F;
  --line: #D3D6CB;
  --teal: #2E6E62;
  --teal-deep: #1D473F;
  --amber: #B8863A;
  --red: #A6432F;
  --green: #3F7A5D;
}
*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background: var(--bg);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}
a{ color: var(--teal-deep); }

.wrap{ max-width: 1180px; margin: 0 auto; padding: 24px 20px 64px; }

header.top{
  display:flex; justify-content: space-between; align-items: flex-end;
  gap: 20px; border-bottom: 2px solid var(--ink);
  padding-bottom: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
header.top .title-block h1{
  font-family: 'Source Serif 4', serif; font-weight:700;
  font-size: clamp(1.35rem, 3vw, 2rem); margin: 0 0 4px; letter-spacing:-0.01em;
}
header.top .title-block p{ margin:0; color: var(--ink-soft); font-size:0.9rem; max-width:52ch; }

.session-box{ display:flex; align-items:center; gap:12px; font-size:0.85rem; }
.session-box .who{ text-align:right; color: var(--ink-soft); }
.session-box .who b{ color: var(--ink); display:block; font-weight:500; }

.btn{
  font-family: inherit; font-size: 0.86rem; font-weight:500; color:#fff;
  background: var(--teal-deep); border:none; border-radius:5px;
  padding: 9px 16px; cursor:pointer; text-decoration:none; display:inline-block;
}
.btn:hover{ background: var(--teal); }
.btn.ghost{ background: transparent; color: var(--ink-soft); border:1px solid var(--line); }
.btn.ghost:hover{ color: var(--red); border-color: var(--red); }
.btn.small{ padding: 5px 10px; font-size: 0.78rem; }

.layout{ display:grid; grid-template-columns: 300px 1fr; gap: 22px; }
@media (max-width: 800px){ .layout{ grid-template-columns: 1fr; } }

nav.indlist{ border:1px solid var(--line); border-radius:8px; overflow:hidden; background: var(--bg-panel); align-self:start; }
nav.indlist .group-label{ font-size:0.72rem; text-transform:uppercase; letter-spacing:0.04em; color:var(--ink-soft); padding:12px 14px 6px; }
nav.indlist button{
  display:flex; width:100%; align-items:center; gap:10px; text-align:left;
  background:transparent; border:none; border-top:1px solid var(--line);
  padding:11px 14px; font-family:inherit; font-size:0.86rem; color:var(--ink); cursor:pointer;
}
nav.indlist button:hover{ background: color-mix(in srgb, var(--teal) 8%, transparent); }
nav.indlist button.active{
  background: color-mix(in srgb, var(--teal) 14%, transparent);
  border-left:3px solid var(--teal-deep); padding-left:11px; font-weight:500;
}
nav.indlist button .badge{
  margin-left:auto; font-size:0.68rem; color: var(--ink-soft);
  border:1px solid var(--line); border-radius:20px; padding:2px 8px; flex:none;
}
nav.indlist button .badge.on{ color: var(--green); border-color: var(--green); }

main.panel{ background: var(--bg-panel); border:1px solid var(--line); border-radius:8px; padding:26px 28px 30px; }

.ind-head h2{ font-family:'Source Serif 4', serif; font-size:1.3rem; font-weight:600; margin:0 0 10px; max-width:56ch; }
.formula-box{
  display:grid; grid-template-columns: 1fr auto 1fr; gap:14px; align-items:center;
  background: var(--bg); border:1px solid var(--line); border-radius:6px; padding:14px 16px; margin-bottom:8px;
}
.formula-box .side{ font-size:0.85rem; color:var(--ink-soft); }
.formula-box .side b{ color:var(--ink); font-weight:500; }
.formula-box .times{ font-family:'IBM Plex Mono', monospace; color:var(--ink-soft); font-size:0.85rem; }
.source-line{ font-size:0.78rem; color:var(--ink-soft); margin:8px 0 24px; }

.grid-2{ display:grid; grid-template-columns: 1.05fr 0.95fr; gap:26px; align-items:start; }
@media (max-width: 900px){ .grid-2{ grid-template-columns: 1fr; } }

fieldset{ border:1px solid var(--line); border-radius:6px; padding:16px; margin:0 0 18px; }
legend{ font-size:0.78rem; text-transform:uppercase; letter-spacing:0.04em; color:var(--ink-soft); padding:0 6px; }
.form-row{ display:grid; grid-template-columns: repeat(auto-fit, minmax(120px,1fr)); gap:12px; margin-bottom:12px; }
label{ display:block; font-size:0.82rem; color:var(--ink-soft); margin-bottom:5px; }
input, select{
  width:100%; font-family:inherit; font-size:0.92rem; color:var(--ink);
  background: var(--bg-panel); border:1px solid var(--line); border-radius:5px; padding:8px 10px;
}
input:focus, select:focus, button:focus-visible{ outline:2px solid var(--teal); outline-offset:1px; }

table.hist{ width:100%; border-collapse:collapse; font-size:0.85rem; }
table.hist th{ text-align:left; font-weight:500; color:var(--ink-soft); border-bottom:1px solid var(--line); padding:6px 8px; }
table.hist td{ padding:6px 8px; border-bottom:1px solid var(--line); font-family:'IBM Plex Mono', monospace; }
table.hist td.name-col{ font-family:inherit; }
table.hist tr:last-child td{ border-bottom:none; }
.empty-hist{ color:var(--ink-soft); font-size:0.85rem; padding:8px 0; }

.gauge-wrap{ text-align:center; margin-bottom:6px; }
.gauge-wrap .pct{ font-family:'IBM Plex Mono', monospace; font-size:1.8rem; font-weight:500; }
.gauge-wrap .pct-lbl{ font-size:0.78rem; color:var(--ink-soft); }

.trend-title{ font-size:0.78rem; text-transform:uppercase; letter-spacing:0.04em; color:var(--ink-soft); margin:20px 0 8px; }

.meta-edit{ display:flex; align-items:center; gap:8px; font-size:0.82rem; color:var(--ink-soft); margin-top:4px; }
.meta-edit input{ width:70px; padding:4px 6px; }

.readonly-note{
  font-size:0.82rem; color: var(--ink-soft); background: var(--bg);
  border:1px dashed var(--line); border-radius:6px; padding:12px 14px; margin-bottom:18px;
}

.placeholder-card{ padding: 30px 10px; color: var(--ink-soft); }
.placeholder-card h2{ font-family:'Source Serif 4', serif; color:var(--ink); font-size:1.25rem; margin: 0 0 8px; }

footer.note{ margin-top:26px; font-size:0.78rem; color:var(--ink-soft); border-top:1px solid var(--line); padding-top:14px; }

/* --- Login & Admin --- */
.auth-shell{
  max-width: 380px; margin: 10vh auto; background: var(--bg-panel);
  border:1px solid var(--line); border-radius:8px; padding: 32px 30px;
}
.auth-shell h1{ font-family:'Source Serif 4', serif; font-size:1.3rem; margin:0 0 4px; }
.auth-shell p.sub{ color:var(--ink-soft); font-size:0.85rem; margin:0 0 22px; }
.auth-shell .field{ margin-bottom:14px; }
.auth-shell .error{ color: var(--red); font-size:0.85rem; margin: 10px 0 0; min-height: 1.2em; }
.auth-shell .btn{ width:100%; margin-top: 6px; }
.auth-shell .back-link{ display:block; margin-top:18px; font-size:0.82rem; text-align:center; }

.admin-table{ width:100%; border-collapse:collapse; font-size:0.85rem; margin-top: 10px; }
.admin-table th{ text-align:left; font-weight:500; color:var(--ink-soft); border-bottom:1px solid var(--line); padding:8px; }
.admin-table td{ padding:8px; border-bottom:1px solid var(--line); vertical-align: top; }
.chip{
  display:inline-block; font-size:0.72rem; background: var(--bg); border:1px solid var(--line);
  border-radius: 20px; padding: 2px 9px; margin: 2px 4px 2px 0;
}
.mod-checks{ display:grid; grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); gap: 6px 14px; margin: 10px 0 16px; }
.mod-checks label{ display:flex; align-items:center; gap:8px; font-size:0.85rem; color: var(--ink); margin:0; }
.mod-checks input{ width:auto; }

.modal-overlay{
  position: fixed; inset: 0; background: rgba(22,36,31,0.55);
  display:flex; align-items:center; justify-content:center; z-index: 1000; padding: 20px;
}
.modal-box{
  background: var(--bg-panel); border:1px solid var(--line); border-radius:8px;
  padding: 24px 26px; max-width: 520px; width:100%; max-height: 82vh; overflow:auto;
}
.modal-actions{ display:flex; gap:10px; margin-top:16px; }