:root {
  --bg: #101418;
  --card: #1a2027;
  --card2: #222a33;
  --text: #e8edf2;
  --muted: #8b98a5;
  --accent: #4da3ff;
  --green: #3ecf8e;
  --red: #ff6b6b;
  --border: #2c3641;
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 16px calc(84px + env(safe-area-inset-bottom));
}
h1 { font-size: 1.35rem; margin: 8px 0 12px; }
h2 { font-size: 1.05rem; margin: 20px 0 8px; color: var(--muted); font-weight: 600;
     text-transform: uppercase; letter-spacing: .04em; }
a { color: var(--accent); text-decoration: none; }
.muted { color: var(--muted); font-size: .9rem; }
.flash {
  background: #143d2b; border: 1px solid var(--green); color: var(--green);
  padding: 10px 14px; border-radius: 10px; margin-bottom: 12px;
}

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 14px; margin-bottom: 12px;
}
.card.link { display: block; color: var(--text); }
.card.link:active { background: var(--card2); }
.card h3 { margin: 0 0 4px; font-size: 1.05rem; }

.statrow { display: flex; gap: 10px; }
.stat {
  flex: 1; background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 12px 10px; text-align: center;
}
.stat b { display: block; font-size: 1.25rem; }
.stat span { font-size: .75rem; color: var(--muted); }

.btn {
  display: inline-block; background: var(--accent); color: #0b1520;
  font-weight: 700; border: none; border-radius: 12px;
  padding: 13px 18px; font-size: 1rem; cursor: pointer; text-align: center;
}
.btn.full { display: block; width: 100%; }
.btn.ghost { background: var(--card2); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--red); color: #fff; }
.btn:active { opacity: .85; }

input, select, textarea {
  width: 100%; background: var(--card2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 11px 12px; font-size: 16px; /* 16px stops iOS zoom */
}
label { display: block; font-size: .85rem; color: var(--muted); margin: 12px 0 4px; }

table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: .8rem; }
.tablewrap { overflow-x: auto; }

/* exercise logging */
.ex { background: var(--card); border: 1px solid var(--border); border-radius: 14px;
      padding: 12px; margin-bottom: 12px; }
.ex h3 { margin: 0; font-size: 1rem; }
.ex .target { font-size: .8rem; color: var(--muted); margin: 2px 0 8px; }
.setrow { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.setrow .num { width: 26px; color: var(--muted); font-size: .85rem; text-align: center; }
.setrow input { flex: 1; min-width: 0; text-align: center; }
.addset { background: none; border: 1px dashed var(--border); color: var(--muted);
          width: 100%; border-radius: 10px; padding: 8px; font-size: .85rem; cursor: pointer; }

.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; background: rgba(20, 25, 31, .96);
  backdrop-filter: blur(10px); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar a {
  flex: 1; text-align: center; padding: 8px 0 6px;
  color: var(--muted); font-size: .68rem;
}
.tabbar a span { display: block; font-size: 1.25rem; line-height: 1.2; }
.tabbar a.on { color: var(--accent); }

.badge { font-size: .7rem; padding: 2px 8px; border-radius: 999px;
         background: var(--card2); border: 1px solid var(--border); color: var(--muted); }
.badge.done { color: var(--green); border-color: var(--green); }

.chartbox { background: var(--card); border: 1px solid var(--border);
            border-radius: 14px; padding: 12px; margin-bottom: 14px; }
.chartbox h3 { margin: 0 0 8px; font-size: .95rem; }
canvas { max-width: 100%; }

.notes-md { white-space: pre-wrap; font-size: .9rem; color: var(--muted); }
.row2 { display: flex; gap: 10px; }
.row2 > * { flex: 1; }
progress { width: 100%; }