:root {
  --bg: #0b0f14;
  --surface: #131a22;
  --surface-2: #1a232e;
  --border: #23303d;
  --text: #e6edf3;
  --muted: #8b9aab;
  --accent: #4ade80;
  --accent-2: #38bdf8;
  --warn: #f59e0b;
  --danger: #f87171;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, "Roboto Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
  padding-top: env(safe-area-inset-top);
}

.num, input[type="number"], input[type="date"], .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---- Header ---- */
header.app {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px calc(14px);
  padding-top: calc(14px + env(safe-area-inset-top));
  background: rgba(11,15,20,.85); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
header.app h1 { font-size: 17px; margin: 0; font-weight: 600; letter-spacing: .2px; }
header.app .dot { color: var(--accent); }
.icon-btn {
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
  width: 38px; height: 38px; border-radius: 10px; font-size: 18px; cursor: pointer;
  display: grid; place-items: center;
}
.icon-btn:active { background: var(--surface-2); }

/* ---- Layout ---- */
main { padding: 14px 14px 0; max-width: 640px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; animation: fade .2s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

h2.section { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin: 18px 2px 9px; font-weight: 600; }
h2.section:first-child { margin-top: 2px; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 14px; margin-bottom: 14px;
}
.card.tight { padding: 4px 14px; }

/* ---- Kompaktní řádky metrik (rychlý zápis: název vlevo, hodnota vpravo) ---- */
.metrics { margin: 2px 0 4px; }
.metric-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--border);
}
.metric-row:last-child { border-bottom: none; }
.metric-row label {
  margin: 0; flex: 1; font-size: 15px; color: var(--text);
}
.metric-row label .unit { color: var(--muted); font-size: 12px; margin-left: 3px; }
.metric-row input {
  width: 108px; flex: 0 0 108px; text-align: right;
  padding: 10px 12px; font-size: 17px;
}

/* ---- Forms ---- */
label { display: block; font-size: 12px; color: var(--muted); margin: 0 0 5px 2px; }
input, textarea, select {
  width: 100%; padding: 12px 12px; font-size: 16px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text); outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent-2); }
textarea { resize: vertical; min-height: 60px; font-family: var(--sans); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.field { margin-bottom: 12px; }

button.primary {
  width: 100%; padding: 14px; font-size: 16px; font-weight: 600;
  background: var(--accent); color: #04240f; border: none; border-radius: 12px;
  cursor: pointer; margin-top: 4px;
}
button.primary:active { filter: brightness(.92); }
button.ghost {
  padding: 11px 14px; font-size: 14px; font-weight: 500;
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer;
}
button.ghost:active { background: var(--border); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---- Bottom nav ---- */
nav.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: rgba(19,26,34,.92); backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
nav.tabs button {
  background: none; border: none; color: var(--muted);
  padding: 10px 4px 12px; font-size: 10.5px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
}
nav.tabs button .ico { font-size: 20px; line-height: 1; }
nav.tabs button.active { color: var(--accent); }

/* ---- Lists ---- */
.entry {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0; border-bottom: 1px solid var(--border);
}
.entry:last-child { border-bottom: none; }
.entry .date { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.entry .vals { font-family: var(--mono); font-size: 14px; text-align: right; }
.entry .vals b { color: var(--text); }
.pill { font-size: 11px; padding: 2px 8px; border-radius: 20px; background: var(--surface-2); color: var(--muted); }

.balance-pos { color: var(--accent); }
.balance-neg { color: var(--warn); }

/* ---- Metric cards / trends ---- */
.metric-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.metric-head .title { font-size: 13px; color: var(--muted); font-weight: 600; }
.metric-head .big { font-family: var(--mono); font-size: 22px; font-weight: 600; }
.trend { font-size: 12px; padding: 2px 9px; border-radius: 20px; font-weight: 600; }
.trend.up { background: rgba(74,222,128,.15); color: var(--accent); }
.trend.down { background: rgba(248,113,113,.15); color: var(--danger); }
.trend.flat { background: var(--surface-2); color: var(--muted); }
.chart-wrap { position: relative; height: 150px; }

/* ---- Cvik → série ---- */
.ex-block { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 12px 12px 10px; margin-bottom: 12px; }
.ex-head { display: flex; gap: 8px; align-items: center; }
.ex-head select, .ex-head .ex-newname { flex: 1; padding: 11px 12px; }
.ex-head .rm-ex { background: none; border: none; color: var(--muted); font-size: 22px; line-height: 1; cursor: pointer; padding: 4px 6px; }
.ex-head .rm-ex:active { color: var(--danger); }
.ex-hint { font-size: 12px; color: var(--accent-2); margin: 7px 2px 2px; min-height: 0; }
.ex-hint.empty { display: none; }
.set-list { margin-top: 10px; }
.set-row { display: grid; grid-template-columns: 20px 1fr 16px 1fr 40px 32px; gap: 7px; align-items: center; margin-bottom: 8px; }
.set-row .setno { font-family: var(--mono); font-size: 12px; color: var(--muted); text-align: center; }
.set-row .times { text-align: center; color: var(--muted); font-size: 14px; }
.set-row input { text-align: center; padding: 10px 6px; font-size: 16px; }
.set-row .dup, .set-row .del { background: none; border: none; cursor: pointer; font-size: 17px; padding: 6px 2px; }
.set-row .dup { color: var(--accent-2); }
.set-row .del { color: var(--muted); }
.set-head { display: grid; grid-template-columns: 20px 1fr 16px 1fr 40px 32px; gap: 7px; margin-bottom: 4px; }
.set-head span { font-size: 10px; color: var(--muted); text-align: center; text-transform: uppercase; letter-spacing: .5px; }
.set-add { margin-top: 2px; width: 100%; padding: 9px; font-size: 13px; background: transparent; border: 1px dashed var(--border); color: var(--muted); border-radius: 9px; cursor: pointer; }
.set-add:active { background: var(--surface); }

/* ---- Výpis historie tréninků ---- */
.wo-item { padding: 12px 0; border-bottom: 1px solid var(--border); }
.wo-item:last-child { border-bottom: none; }
.wo-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.wo-head .date { font-family: var(--mono); font-size: 13px; color: var(--text); }
.wo-actions { display: flex; gap: 12px; align-items: center; font-size: 13px; }
.wo-actions a { color: var(--accent-2); text-decoration: none; }
.wo-actions a.danger { color: var(--danger); }
.wo-ex { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; align-items: baseline; }
.wo-ex .wo-name { color: var(--text); font-size: 14px; }
.wo-ex .wo-sets { font-family: var(--mono); font-size: 13px; color: var(--muted); text-align: right; }

/* ---- Login ---- */
.login-wrap { min-height: 70vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 340px; text-align: center; }
.login-card .logo { font-size: 40px; margin-bottom: 8px; }
.login-card h1 { font-size: 20px; margin: 0 0 4px; }
.login-card p { color: var(--muted); font-size: 13px; margin: 0 0 20px; }

/* toast */
#toast {
  position: fixed; left: 50%; bottom: calc(84px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(20px); opacity: 0;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
  padding: 10px 18px; border-radius: 24px; font-size: 14px; z-index: 50;
  transition: all .25s ease; pointer-events: none; max-width: 90%;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.err { border-color: var(--danger); color: var(--danger); }

.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }
.empty { text-align: center; color: var(--muted); padding: 24px 0; font-size: 14px; }
.goalbar { height: 6px; border-radius: 4px; background: var(--surface-2); overflow: hidden; margin-top: 6px; }
.goalbar > div { height: 100%; background: var(--accent-2); }