:root {
  --bg: #0f1216; --panel: #181d23; --panel2: #20262e; --line: #2b323b;
  --text: #eef1f4; --muted: #8d98a5; --accent: #3fa7ff; --accent-ink: #04121f;
  --green: #3ccf7a; --amber: #f2b33d; --red: #ff5d5d;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(76px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.top {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 8px;
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px; background: var(--bg); border-bottom: 1px solid var(--line);
}
.top h1 { font-size: 20px; margin: 0; flex: 1; text-align: center; }
.top .spacer, .top .back { width: 40px; }
.back { background: none; border: 0; font-size: 32px; line-height: 1; padding: 0; color: var(--accent); }

main { padding: 16px; max-width: 640px; margin: 0 auto; }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 22px 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 6; display: flex;
  background: var(--panel); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom);
}
.tabs button { flex: 1; background: none; border: 0; padding: 14px 0; color: var(--muted); font-size: 14px; }
.tabs button.on { color: var(--accent); font-weight: 600; }

.bigbtn {
  display: block; width: 100%; text-align: left; background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 18px; margin-bottom: 10px;
}
.bigbtn b { font-size: 20px; display: block; }
.bigbtn.next { border-color: var(--accent); }
.bigbtn .tag { float: right; font-size: 12px; background: var(--accent); color: var(--accent-ink); border-radius: 99px; padding: 2px 8px; font-weight: 700; }
.row2 { display: flex; gap: 10px; }
.row2 > * { flex: 1; }

.btn { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }
.btn.danger { color: var(--red); }
.btn.full { width: 100%; }
.btn.sm { padding: 6px 10px; font-size: 14px; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px; margin-bottom: 12px; }
.card.warn { border-color: var(--amber); }
.card.alert { border-color: var(--red); }
.card h3 { margin: 0 0 2px; font-size: 17px; }
.ex-head { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.target { color: var(--muted); font-size: 14px; white-space: nowrap; }
.last { color: var(--muted); font-size: 13px; margin: 2px 0 8px; }
.nudge { font-size: 14px; color: var(--green); margin: 4px 0 8px; }
.sym { font-size: 13px; font-weight: 600; border-radius: 6px; padding: 2px 8px; display: inline-block; margin: 2px 0 8px; }
.sym.g { background: rgba(60,207,122,.15); color: var(--green); }
.sym.a { background: rgba(242,179,61,.15); color: var(--amber); }
.sym.r { background: rgba(255,93,93,.15); color: var(--red); }

.set { display: grid; grid-template-columns: 28px 1fr 46px; gap: 8px; align-items: center; padding: 6px 0; border-top: 1px solid var(--line); }
.set .n { color: var(--muted); font-size: 14px; text-align: center; }
.set .fields { display: grid; gap: 6px; }
.side { display: grid; grid-template-columns: 22px 1fr 1fr; gap: 6px; align-items: center; }
.side.one { grid-template-columns: 1fr 1fr; }
.side.solo { grid-template-columns: 22px 1fr; }
.side.solo.noside { grid-template-columns: 1fr; }
.side .s { font-weight: 700; font-size: 13px; color: var(--muted); }
.side .s.R { color: var(--accent); }
.inp { display: flex; align-items: center; background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 0 8px; min-width: 0; }
.inp input { width: 100%; min-width: 0; background: none; border: 0; padding: 10px 0; font-size: 17px; outline: none; }
.inp span { color: var(--muted); font-size: 12px; padding-left: 4px; }
.check { width: 46px; height: 46px; border-radius: 50%; border: 2px solid var(--line); background: none; font-size: 20px; color: var(--muted); }
.check.on { background: var(--green); border-color: var(--green); color: #062; }
.ex-tools { display: flex; gap: 8px; margin-top: 8px; }

label.f { display: block; margin: 12px 0 6px; color: var(--muted); font-size: 14px; }
input.t, select.t, textarea.t { width: 100%; background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 12px; font-size: 16px; }
textarea.t { min-height: 80px; resize: vertical; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.painval { font-weight: 700; }
.seg { display: flex; gap: 6px; }
.seg button { flex: 1; background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 4px; }
.seg button.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }

.list .item { display: flex; justify-content: space-between; gap: 10px; align-items: center; padding: 12px 0; border-top: 1px solid var(--line); }
.list .item:first-child { border-top: 0; }
.list button.item { width: 100%; background: none; border-left: 0; border-right: 0; border-bottom: 0; text-align: left; }

.chart { width: 100%; height: 90px; display: block; margin-top: 6px; }
.chart .gr { stroke: var(--line); }
.chart .lR { stroke: var(--accent); fill: none; stroke-width: 2.5; }
.chart .lL { stroke: var(--muted); fill: none; stroke-width: 2; stroke-dasharray: 4 3; }
.chart .dR { fill: var(--accent); }
.chart .dL { fill: var(--muted); }
.chart .mk { stroke: var(--amber); stroke-dasharray: 3 3; }
.chart text { fill: var(--muted); font-size: 10px; }
.legend { font-size: 12px; color: var(--muted); }
.legend .kR { color: var(--accent); font-weight: 700; }

.rest {
  position: fixed; right: 16px; bottom: calc(68px + env(safe-area-inset-bottom)); z-index: 7;
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 99px; padding: 12px 18px; font-weight: 700;
  box-shadow: 0 4px 16px rgba(0,0,0,.4);
}
.rest.running { background: var(--amber); }

/* Pop-ups always open mid-screen */
.modal { position: fixed; inset: 0; z-index: 20; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal .card { width: 100%; max-width: 440px; max-height: 85vh; overflow: auto; margin: 0; }
.modal h3 { margin-top: 0; }
.modal .actions { display: flex; gap: 8px; margin-top: 14px; }
.modal .actions > * { flex: 1; }
.pick { display: block; width: 100%; text-align: left; background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-bottom: 6px; }

.mt { margin-top: 10px; }
.ex-tools .spacer { flex: 1; }