:root {
  --bg: #0b0d10;
  --card: #14181d;
  --card-2: #1b2129;
  --line: #262d36;
  --text: #e7ecf2;
  --muted: #8a95a3;
  --accent: #4ea1ff;
  --good: #46d18a;
  --pr: #ffcf5c;
  --danger: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#app {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px 16px calc(40px + env(safe-area-inset-bottom));
}

.loading { color: var(--muted); text-align: center; margin-top: 40vh; }

/* ---- header ---- */
.topbar { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.topbar .back {
  background: var(--card); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 8px 12px; font-size: 15px; cursor: pointer;
}
.topbar h1 { font-size: 20px; margin: 0; flex: 1; }
.pill {
  font-size: 12px; color: var(--muted); background: var(--card);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px;
}

/* ---- today ---- */
.day-head { margin: 4px 0 18px; }
.day-head .num { color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; }
.day-head h1 { margin: 4px 0 2px; font-size: 26px; }
.day-head .sub { color: var(--muted); font-size: 14px; }

.ex-list { display: flex; flex-direction: column; gap: 10px; }
.ex-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; cursor: pointer; display: flex; align-items: center; gap: 12px;
  transition: border-color .1s;
}
.ex-card:active { border-color: var(--accent); }
.ex-card.done { opacity: .55; }
.ex-card .body { flex: 1; min-width: 0; }
.ex-card .name { font-size: 17px; font-weight: 600; }
.ex-card .cat { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.ex-card .prescribed { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.ex-card .lasttime { color: var(--good); font-size: 13px; margin-top: 2px; }
.ex-card .lasttime.none { color: var(--muted); }
.ex-card .check { color: var(--good); font-size: 20px; width: 20px; text-align: center; }
.ex-card.suggested { border-color: var(--accent); background: linear-gradient(var(--card), var(--card-2)); }
.ex-card .cat .tag { color: var(--accent); font-weight: 700; }

/* section labels + suggestion/next-up blocks */
.section-label {
  color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em;
  font-weight: 700; margin: 20px 0 8px;
}
.section-label:first-of-type { margin-top: 6px; }
.next-up { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.next-up .finish { margin-top: 12px; }
.nextup-empty { color: var(--muted); font-size: 14px; padding: 6px 2px; }

.sync-line {
  display: block; text-align: center; font-size: 13px; margin-top: 14px;
  text-decoration: none; cursor: pointer;
}
.sync-line.on { color: var(--good); }
.sync-line.off { color: var(--accent); }

.auth-msg { text-align: center; color: var(--muted); font-size: 14px; margin-top: 14px; }
.auth-msg.err { color: var(--danger); }

.diag {
  text-align: center; color: #5b6673; font-size: 11px; margin-top: 22px;
  font-variant-numeric: tabular-nums; word-spacing: .05em;
}

.finish {
  margin-top: 22px; width: 100%; padding: 15px; font-size: 16px; font-weight: 600;
  background: var(--card-2); color: var(--text); border: 1px solid var(--line);
  border-radius: var(--radius); cursor: pointer;
}
.finish:active { border-color: var(--accent); }

.streak { text-align: center; color: var(--muted); font-size: 13px; margin-top: 16px; }
.streak b { color: var(--pr); }

/* ---- exercise screen ---- */
.stat-row { display: flex; gap: 10px; margin: 6px 0 18px; }
.stat {
  flex: 1; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px;
}
.stat .label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; }
.stat .val { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 3px; }
.stat.pr .val { color: var(--pr); }
.stat .val.none { color: var(--muted); font-size: 18px; }
.stat .meta { color: var(--muted); font-size: 12px; margin-top: 2px; }

.prescribed-banner {
  background: var(--card-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px; margin-bottom: 16px; font-size: 14px; color: var(--muted);
}
.prescribed-banner b { color: var(--text); font-size: 16px; }

/* entry */
.entry { display: flex; gap: 10px; margin-bottom: 12px; }
.field { flex: 1; }
.field label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 5px; }
.field input {
  width: 100%; background: var(--card); border: 1px solid var(--line); color: var(--text);
  border-radius: 12px; padding: 14px; font-size: 24px; font-weight: 700; text-align: center;
  font-variant-numeric: tabular-nums;
}
.field input:focus { outline: none; border-color: var(--accent); }

.log-btn {
  width: 100%; padding: 16px; font-size: 18px; font-weight: 700;
  background: var(--accent); color: #06121f; border: none; border-radius: var(--radius);
  cursor: pointer; margin-bottom: 8px;
}
.log-btn:active { filter: brightness(.9); }

.failtoggle { display: flex; align-items: center; justify-content: center; gap: 8px; color: var(--muted); font-size: 14px; margin-bottom: 18px; cursor: pointer; }
.failtoggle input { width: 18px; height: 18px; accent-color: var(--danger); }

.today-sets { margin-top: 6px; }
.today-sets h3 { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin: 0 0 8px; }
.set-chip {
  display: inline-flex; align-items: center; gap: 6px; background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; margin: 0 8px 8px 0;
  font-variant-numeric: tabular-nums; font-weight: 600;
}
.set-chip .f { color: var(--danger); font-size: 12px; }
.set-chip .x { color: var(--muted); cursor: pointer; padding-left: 2px; }

.notes { color: var(--muted); font-size: 13px; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.howto { margin-top: 12px; }
.howto summary { color: var(--accent); font-size: 14px; cursor: pointer; }
.howto ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.howto li { margin-bottom: 4px; }