/* Fitlog - dark-only UI, bewust gekozen voor gebruik in de sportschool */
:root{
  color-scheme: dark;
  --bg:#121211;
  --surface-1:#1a1a19;
  --surface-2:#232322;
  --line:#333331;
  --text-primary:#ffffff;
  --text-secondary:#c3c2b7;
  --text-muted:#8b8a80;
  --accent:#3987e5;
  --accent-soft:rgba(57,135,229,.16);
  --good:#199e70;
  --bad:#e66767;
  --warn:#c98500;
  --radius:14px;
  --tabs-h:56px;
  --safe-b: env(safe-area-inset-bottom, 0px);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text-primary);
  font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-text-size-adjust:100%;
  padding-bottom:calc(var(--tabs-h) + var(--safe-b));
  overscroll-behavior-y:contain;
  overflow-x:hidden;
}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--accent);text-decoration:none}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.01em}

#topbar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;gap:12px;
  padding:calc(env(safe-area-inset-top,0px) + 12px) 16px 12px;
  background:rgba(18,18,17,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
#title{font-size:20px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#topActions{display:flex;gap:8px;flex:0 0 auto}

main{padding:16px 16px 24px;max-width:720px;margin:0 auto}

/* ---- generieke bouwstenen ---- */
.card{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:12px}
.card h3{font-size:17px}
.row{display:flex;align-items:center;gap:10px}
.row.between{justify-content:space-between}
.grow{flex:1;min-width:0}
.muted{color:var(--text-muted)}
.sec{color:var(--text-secondary)}
.small{font-size:13px}
.mt{margin-top:12px}
.center{text-align:center}
.stack{display:flex;flex-direction:column;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-primary);
  padding:11px 14px;border-radius:12px;min-height:44px;cursor:pointer;
}
.btn:active{transform:scale(.98)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.btn.good{background:var(--good);border-color:var(--good);color:#fff;font-weight:600}
.btn.ghost{background:transparent}
.btn.danger{color:var(--bad);border-color:#4a2a2a}
.btn.sm{min-height:36px;padding:6px 10px;font-size:14px;border-radius:10px}
.btn.block{width:100%}
.btn:disabled{opacity:.45}

.input,select,textarea.input{
  width:100%;background:var(--surface-2);border:1px solid var(--line);
  border-radius:10px;padding:11px 12px;min-height:44px;
}
.input:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px}
label.field{display:block;margin-bottom:10px}
label.field > span{display:block;font-size:13px;color:var(--text-secondary);margin-bottom:5px}

.pill{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;background:var(--surface-2);color:var(--text-secondary);border:1px solid var(--line)}
.pill.pr{background:rgba(25,158,112,.15);border-color:#1c5c46;color:#7fdcbb}

.empty{padding:28px 16px;text-align:center;color:var(--text-muted)}

/* ---- tabs ---- */
#tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(18,18,17,.95);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  padding-bottom:var(--safe-b);
}
#tabs a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  height:var(--tabs-h);font-size:11px;color:var(--text-muted);
}
#tabs a .ico{font-size:15px;line-height:1}
#tabs a.on{color:var(--accent)}

/* ---- workout ---- */
.ex-card{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.ex-head{padding:12px 14px;border-bottom:1px solid var(--line)}
.ex-head h3{font-size:16px}
.set-row{display:grid;grid-template-columns:28px minmax(0,1fr) minmax(0,1fr) 44px;gap:8px;align-items:center;padding:7px 14px}
.set-row + .set-row{border-top:1px solid #26262400}
.set-head{font-size:11px;color:var(--text-muted);padding:6px 14px 0;display:grid;grid-template-columns:28px minmax(0,1fr) minmax(0,1fr) 44px;gap:8px}
.set-no{color:var(--text-muted);font-size:13px;text-align:center}
.set-row input{min-width:0;
  width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;
  padding:9px 8px;min-height:44px;text-align:center;font-variant-numeric:tabular-nums;
}
.set-row.done input{background:rgba(25,158,112,.10);border-color:#1c5c46}
.chk{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;font-size:17px;color:var(--text-muted);cursor:pointer;
}
.chk.on{background:var(--good);border-color:var(--good);color:#fff}
.ex-foot{display:flex;gap:8px;padding:8px 14px 12px}
.prev{font-size:12px;color:var(--text-muted);margin-top:3px}

/* ---- rusttimer ---- */
#restBar[hidden]{display:none}
#restBar{
  position:fixed;left:8px;right:8px;bottom:calc(var(--tabs-h) + var(--safe-b) + 8px);z-index:29;
  display:flex;align-items:center;gap:8px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:8px;
  box-shadow:0 8px 24px rgba(0,0,0,.45);
}
#restBar .rest-mid{flex:1;min-width:0;text-align:center}
#restTime{font-size:20px;font-weight:650;font-variant-numeric:tabular-nums;line-height:1.1}
.rest-track{height:4px;background:#333331;border-radius:999px;margin-top:5px;overflow:hidden}
#restFill{height:100%;background:var(--accent);width:100%}
.rest-btn{background:var(--surface-1);border:1px solid var(--line);border-radius:10px;min-height:40px;padding:0 12px;cursor:pointer;font-size:14px}
.rest-skip{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}

/* ---- stats & chart ---- */
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.stat{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--radius);padding:12px 10px}
.stat .k{font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}
.stat .v{font-size:22px;font-weight:650;font-variant-numeric:tabular-nums;margin-top:2px}
.stat .v small{font-size:12px;font-weight:500;color:var(--text-secondary)}

.chart-wrap{position:relative;touch-action:pan-y}
.chart-wrap svg{display:block;width:100%;height:auto;overflow:visible}
.tip{
  position:absolute;pointer-events:none;transform:translate(-50%,-115%);
  background:var(--surface-2);border:1px solid var(--line);border-radius:10px;
  padding:6px 9px;font-size:12px;white-space:nowrap;box-shadow:0 6px 18px rgba(0,0,0,.5);
}
.tip b{font-variant-numeric:tabular-nums}
table.data{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}
table.data th{text-align:left;font-weight:500;color:var(--text-muted);font-size:12px;padding:6px 8px;border-bottom:1px solid var(--line)}
table.data td{padding:7px 8px;border-bottom:1px solid #232322}
details.tbl summary{cursor:pointer;color:var(--text-secondary);font-size:13px;padding:6px 0}

.sess{border-bottom:1px solid var(--line);padding:10px 0}
.sess:last-child{border-bottom:0}
.toast{
  position:fixed;left:50%;bottom:calc(var(--tabs-h) + var(--safe-b) + 16px);transform:translateX(-50%);
  background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:10px 16px;z-index:50;
  box-shadow:0 8px 24px rgba(0,0,0,.5);max-width:90vw;text-align:center;
}