:root {
  --bg: #111418; --card: #1b2027; --card2: #232a33; --line: #2e3640; --text: #e9edf1; --muted: #8b96a3;
  --accent: #ff5a36; --accent-ink: #fff; --good: #3fbf7f; --warn: #f0b429; --bad: #e5484d; --blue: #4c9bf5;
  --radius: 14px; color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f3f4f6; --card: #fff; --card2: #eef0f3; --line: #dde1e6; --text: #15191e; --muted: #66707c; color-scheme: light; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
body.noscroll { overflow: hidden; }
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 28px; margin: 8px 0; } h2 { font-size: 17px; margin: 0 0 10px; } h3 { font-size: 14px; margin: 18px 0 6px; text-transform: uppercase; letter-spacing: .04em; }
.page { max-width: 640px; margin: 0 auto; padding: calc(10px + env(safe-area-inset-top)) 12px 20px; }
.pad { padding: 0 4px; } .center { text-align: center; } .grow { flex: 1; min-width: 0; }
.muted { color: var(--muted); } .small { font-size: 13px; } .accent { color: var(--accent); } .err { color: var(--bad); }
.row { display: flex; align-items: center; } .between { justify-content: space-between; } .gap { gap: 8px; }
.hidden { display: none !important; }

.card { display: block; background: var(--card); border-radius: var(--radius); padding: 14px; margin: 10px 0; color: inherit; }
.card.link:active { background: var(--card2); }
.chev { color: var(--muted); font-size: 24px; padding-left: 8px; }
.hero { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.resume { display: flex; justify-content: space-between; align-items: center; border: 1px solid var(--accent); }

.pill { display: inline-block; font-size: 13px; padding: 5px 10px; border-radius: 99px; background: var(--card2); color: var(--text); }
.pill.warn { background: color-mix(in srgb, var(--warn) 20%, transparent); color: var(--warn); }
.tag { font-size: 11px; padding: 1px 6px; border-radius: 6px; background: var(--card2); color: var(--muted); }
.tag.pr { background: var(--warn); color: #000; font-weight: 700; }

.field { display: flex; flex-direction: column; gap: 4px; margin: 8px 0; font-size: 13px; color: var(--muted); }
.field em { font-style: normal; }
input, select, textarea { font: inherit; color: var(--text); background: var(--card2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
input[type=date] { min-height: 44px; }
.pad-input { margin: 0 0 6px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: inherit; font-weight: 600; padding: 12px 16px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--card2); color: var(--text); cursor: pointer; margin: 6px 0; }
.btn.block { display: flex; width: 100%; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--bad); }
.btn.danger-t { color: var(--bad); border: none; }
.btn.small { padding: 8px 12px; font-size: 14px; }
.btn:disabled { opacity: .4; }
.icon-btn { background: none; border: none; color: var(--text); font-size: 22px; min-width: 40px; min-height: 40px; border-radius: 10px; cursor: pointer; }
.icon-btn:active { background: var(--card2); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips.scroll { flex-wrap: nowrap; overflow-x: auto; padding: 8px 0; scrollbar-width: none; }
.chip { font: inherit; font-size: 13px; padding: 6px 10px; border-radius: 99px; background: var(--card2); color: var(--text); border: 1px solid transparent; white-space: nowrap; cursor: pointer; }
.chip.on { border-color: var(--accent); color: var(--accent); }
.z-low { --z: var(--muted); } .z-mev { --z: var(--blue); } .z-mav { --z: var(--good); } .z-over { --z: var(--bad); }
.chip.z-low, .chip.z-mev, .chip.z-mav, .chip.z-over { border-color: var(--z); }
.z-low-t { color: var(--muted); } .z-mev-t { color: var(--blue); } .z-mav-t { color: var(--good); } .z-over-t { color: var(--bad); }

/* workout */
.whead { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.back { font-size: 32px; color: var(--text); padding: 0 8px 4px 0; line-height: 1; }
.title-input { font-size: 22px; font-weight: 700; background: none; border: none; padding: 2px 0; }
.date-inline { width: auto; padding: 2px 6px; min-height: 0; font-size: 13px; background: none; border: none; color: var(--muted); }
.ex-name { font-weight: 700; font-size: 17px; color: var(--text); }
.ex-head { align-items: flex-start; }
.last { margin: 8px 0 4px; }
.rec { background: var(--card2); border-radius: 10px; padding: 8px 10px; margin: 8px 0; font-size: 14px; }
.rec summary { cursor: pointer; list-style: none; } .rec summary::-webkit-details-marker { display: none; }
.rec p { margin: 6px 0 0; }

.sets { margin: 6px 0; }
.set-row { display: grid; grid-template-columns: 34px minmax(0, 1fr) 72px 56px 48px 42px; gap: 6px; align-items: center; padding: 4px 0; }
.set-row.head { padding: 0; } .set-row.head span { text-align: center; } .set-row.head span:nth-child(2) { text-align: left; }
.set-row input { text-align: center; padding: 9px 4px; font-size: 17px; }
.set-row input::placeholder { color: color-mix(in srgb, var(--muted) 70%, transparent); }
.set-no { font: inherit; font-weight: 700; background: var(--card2); border: none; border-radius: 8px; color: var(--text); height: 36px; cursor: pointer; }
.set-row.warmup .set-no { color: var(--warn); } .set-row.myorep .set-no { color: var(--blue); } .set-row.drop .set-no { color: #b07cf5; }
.prev { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.check { height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--card2); color: var(--muted); font-size: 18px; cursor: pointer; }
.set-row.done .check { background: var(--good); border-color: var(--good); color: #fff; }
.set-row.done input { background: color-mix(in srgb, var(--good) 14%, var(--card2)); border-color: transparent; }

.fb { border-top: 1px solid var(--line); margin-top: 8px; padding-top: 4px; }
.fb-row { margin: 8px 0; }
.seg { display: flex; gap: 4px; margin-top: 4px; }
.seg button { flex: 1; font: inherit; font-size: 12px; padding: 7px 2px; border-radius: 8px; border: 1px solid var(--line); background: var(--card2); color: var(--text); cursor: pointer; }
.seg button.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

/* rest timer */
.rest { white-space: nowrap; position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(70px + env(safe-area-inset-bottom)); z-index: 20;
  background: var(--text); color: var(--bg); border-radius: 99px; padding: 6px 6px 6px 16px; display: flex; gap: 6px; align-items: center; font-weight: 700;
  box-shadow: 0 6px 24px rgba(0,0,0,.35); font-variant-numeric: tabular-nums; }
.rest.ready { background: var(--good); color: #fff; }
.rest button { font: inherit; font-size: 13px; border: none; border-radius: 99px; padding: 7px 10px; background: color-mix(in srgb, var(--bg) 15%, transparent); color: inherit; cursor: pointer; }

/* modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 50; display: flex; align-items: flex-end; justify-content: center; }
.sheet { background: var(--card); width: 100%; max-width: 640px; max-height: 88vh; overflow-y: auto; border-radius: 18px 18px 0 0;
  padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); }
.results { margin: 4px 0; }
.result { display: flex; width: 100%; justify-content: space-between; align-items: center; text-align: left; font: inherit; color: var(--text);
  background: none; border: none; border-bottom: 1px solid var(--line); padding: 10px 2px; cursor: pointer; }
.result .plus { color: var(--accent); font-size: 22px; }

.toast { position: fixed; top: calc(12px + env(safe-area-inset-top)); left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 99px; font-weight: 600; z-index: 60; }

/* tab bar */
.tabbar { position: fixed; bottom: 0; left: 0; right: 0; display: flex; background: color-mix(in srgb, var(--card) 92%, transparent); backdrop-filter: blur(10px);
  border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); z-index: 10; }
.tabbar a { flex: 1; text-align: center; color: var(--muted); font-size: 11px; padding: 8px 0 10px; display: flex; flex-direction: column; gap: 2px; }
.tabbar a span { font-size: 18px; } .tabbar a.active { color: var(--accent); }

/* progress */
.vol { margin-top: 8px; }
.vb { margin: 10px 0 2px; }
.vb-label { display: flex; justify-content: space-between; margin-bottom: 3px; }
.vb-track { position: relative; height: 12px; background: var(--card2); border-radius: 6px; overflow: hidden; }
.vb-zone { position: absolute; top: 0; bottom: 0; }
.vb-zone.mev { background: color-mix(in srgb, var(--blue) 18%, transparent); }
.vb-zone.mav { background: color-mix(in srgb, var(--good) 22%, transparent); }
.vb-zone.mrv { background: color-mix(in srgb, var(--warn) 18%, transparent); }
.vb-fill { position: absolute; top: 3px; bottom: 3px; left: 0; border-radius: 4px; background: var(--z, var(--muted)); }
.vb-ticks { position: relative; height: 14px; font-size: 10px; }
.vb-ticks span { position: absolute; transform: translateX(-50%); }
.legend { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 10px; }
.legend span::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 4px; background: var(--z); vertical-align: -1px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 8px; margin: 10px 0; }
.stat { background: var(--card); border-radius: var(--radius); padding: 12px; } .stat b { font-size: 20px; }
.h-ex { font-size: 22px; margin: 0; }
.chart { width: 100%; height: auto; }
.chart .grid { stroke: var(--line); } .chart text { fill: var(--muted); font-size: 10px; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; } .chart .dot { fill: var(--accent); }
.set-chip { display: inline-block; background: var(--card2); border-radius: 6px; padding: 2px 6px; margin: 4px 4px 0 0; }
.set-chip.warmup { color: var(--warn); }

/* settings */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 8px; }
.lm { width: 100%; border-collapse: collapse; font-size: 13px; }
.lm th { color: var(--muted); font-weight: 500; text-align: center; padding: 4px; }
.lm td { padding: 3px; } .lm td:first-child { white-space: nowrap; }
.lm input { padding: 6px 2px; text-align: center; }

@media (max-width: 380px) {
  .set-row { grid-template-columns: 30px minmax(0, 1fr) 62px 48px 42px 38px; gap: 4px; }
}
.card.row { display: flex; }
.row > h2 { margin: 0; }
section > .row.between { margin-bottom: 8px; }

/* sign in & accounts */
body.signed-out .tabbar, body.signed-out .rest { display: none; }
.auth { text-align: center; padding-top: calc(48px + env(safe-area-inset-top)); max-width: 420px; }
.auth form { text-align: left; }
.auth-logo { width: 72px; height: 72px; border-radius: 18px; }
.invite { display: grid; grid-template-columns: 1fr auto; gap: 8px; background: var(--card2); border-radius: 10px; padding: 10px 12px; margin: 8px 0; word-break: break-all; }
.user-row { border-top: 1px solid var(--line); padding: 10px 0; gap: 8px; flex-wrap: wrap; }