/* Vaje — demo vadbe s kamero | DEMO v0.1 */

:root{
  --bg:#070b14;
  --bg-2:#0a1020;
  --card:rgba(14,22,40,.82);
  --line:rgba(255,255,255,.10);
  --txt:#eaf0fb;
  --muted:#94a3bd;
  --accent:#34e0a1;
  --accent-2:#5bc8ff;
  --warn:#ffb020;
  --bad:#ff5f6d;
  --r:18px;
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
  overscroll-behavior:none;
}

#stage{
  position:fixed;
  inset:0;
  display:block;
  background:radial-gradient(120% 90% at 50% 0%,#101c33 0%,var(--bg) 70%);
}

/* ---------- camera ---------- */
#viewport{position:absolute;inset:0;overflow:hidden}
#cam,#overlay{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:contain;
  transform:scaleX(-1);           /* mirrored preview */
}
#cam{background:#05070d}
#overlay{pointer-events:none}
#vignette{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(52% 26% at 50% 88%,rgba(7,11,20,.78) 0%,rgba(7,11,20,0) 100%),
    linear-gradient(to bottom,rgba(7,11,20,.78) 0%,rgba(7,11,20,0) 22%,rgba(7,11,20,0) 48%,rgba(7,11,20,.72) 78%,rgba(7,11,20,.95) 100%);
}

/* ---------- top bar ---------- */
#topbar{
  position:absolute;left:0;right:0;top:0;
  padding:calc(var(--safe-t) + 12px) 14px 10px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  z-index:5;
}
.brand{display:flex;align-items:center;gap:8px;font-size:14px;letter-spacing:.02em}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.brand-name{font-weight:700}
.brand-sub{
  color:var(--muted);border-left:1px solid var(--line);padding-left:8px;
}
.ghost{
  background:rgba(255,255,255,.08);
  border:1px solid var(--line);
  color:var(--txt);
  font:inherit;font-size:13px;
  padding:7px 13px;border-radius:999px;
  backdrop-filter:blur(8px);
  cursor:pointer;
}
.ghost:active{transform:scale(.96)}

/* ---------- stats ---------- */
#stats{
  position:absolute;left:14px;right:14px;top:calc(var(--safe-t) + 54px);
  display:grid;grid-template-columns:repeat(3,1fr);gap:8px;
  z-index:5;
}
.stat{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:9px 8px 8px;
  text-align:center;
  backdrop-filter:blur(10px);
}
.stat-val{display:block;font-size:22px;font-weight:750;line-height:1.05;font-variant-numeric:tabular-nums}
.stat-lab{display:block;margin-top:3px;font-size:10.5px;color:var(--muted);letter-spacing:.03em}

/* ---------- cue banner ---------- */
.cue{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.9);
  z-index:6;
  padding:12px 24px;border-radius:999px;
  font-size:clamp(20px,6vw,30px);font-weight:750;letter-spacing:-.01em;
  background:rgba(10,16,32,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;
  transition:opacity .18s ease,transform .18s ease;
  white-space:nowrap;
}
.cue.on{opacity:1;transform:translate(-50%,-50%) scale(1)}
.cue.good{color:#04150e;background:var(--accent);border-color:transparent;box-shadow:0 10px 40px rgba(52,224,161,.35)}
.cue.warn{color:#1a1200;background:var(--warn);border-color:transparent;box-shadow:0 10px 40px rgba(255,176,32,.3)}
.cue.info{color:var(--txt)}

/* ---------- hero gauge ---------- */
#gauge{
  position:absolute;
  left:50%;transform:translateX(-50%);
  bottom:calc(var(--safe-b) + 96px);
  width:min(44vw,180px);aspect-ratio:1;
  z-index:5;
  display:grid;place-items:center;
}
#gauge svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.g-track{
  fill:none;stroke:rgba(255,255,255,.17);stroke-width:8;
  filter:drop-shadow(0 0 6px rgba(0,0,0,.75));
}
.g-fill{
  fill:none;stroke:var(--accent);stroke-width:8;stroke-linecap:round;
  stroke-dasharray:326.7;stroke-dashoffset:326.7;
  transition:stroke-dashoffset .08s linear,stroke .2s ease;
  filter:drop-shadow(0 0 8px rgba(52,224,161,.5));
}
#gauge.deep .g-fill{stroke:var(--accent-2);filter:drop-shadow(0 0 10px rgba(91,200,255,.55))}
#gauge.warn .g-fill{stroke:var(--warn);filter:drop-shadow(0 0 10px rgba(255,176,32,.5))}
.g-inner{text-align:center;line-height:1;z-index:1}
.g-num{
  font-size:min(15vw,60px);font-weight:800;letter-spacing:-.045em;
  font-variant-numeric:tabular-nums;
  text-shadow:0 4px 24px rgba(0,0,0,.6);
}
.g-num .deg{font-size:.5em;font-weight:650;vertical-align:super;margin-left:1px;opacity:.85}
.g-lab{
  margin-top:6px;font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;
  color:#c3cfe4;text-shadow:0 2px 10px rgba(0,0,0,.85);
}
.g-phase{
  position:absolute;bottom:-30px;left:50%;transform:translateX(-50%);
  font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--txt);
  white-space:nowrap;
  background:rgba(10,16,32,.72);border:1px solid var(--line);
  border-radius:999px;padding:4px 12px;
  backdrop-filter:blur(8px);
}

/* ---------- intro / error panel ---------- */
#panel{
  position:absolute;inset:0;z-index:20;
  display:grid;place-items:center;
  padding:calc(var(--safe-t) + 16px) 16px calc(var(--safe-b) + 16px);
  background:linear-gradient(180deg,rgba(7,11,20,.92),rgba(7,11,20,.97));
  backdrop-filter:blur(6px);
}
#panel[hidden]{display:none}
.panel-card{
  width:min(420px,100%);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:22px;
  padding:24px 20px 20px;
  text-align:center;
  box-shadow:0 24px 70px rgba(0,0,0,.55);
}
.panel-card h1{font-size:26px;font-weight:780;letter-spacing:-.02em;margin-bottom:10px}
.panel-card p{color:var(--muted);font-size:14.5px;line-height:1.55}
#panel-tips{
  list-style:none;text-align:left;margin:16px 0 4px;
  display:grid;gap:9px;
}
#panel-tips li{
  position:relative;padding-left:24px;font-size:13.5px;color:var(--muted);line-height:1.45;
}
#panel-tips li::before{
  content:"";position:absolute;left:6px;top:.5em;
  width:7px;height:7px;border-radius:50%;background:var(--accent);
}
#panel-tips strong{color:var(--txt);font-weight:650}
.cta{
  display:block;width:100%;margin-top:18px;
  background:linear-gradient(180deg,#3df0ae,#22c98c);
  color:#04150e;font:inherit;font-size:17px;font-weight:750;
  border:0;border-radius:14px;padding:15px;
  cursor:pointer;
  box-shadow:0 10px 30px rgba(52,224,161,.28);
}
.cta:active{transform:scale(.985)}
.cta[disabled]{opacity:.55;cursor:default;box-shadow:none}
.status{margin-top:12px;font-size:12.5px;min-height:1.2em}
.status.err{color:var(--bad)}

/* ---------- footer ---------- */
#footer{
  position:absolute;left:0;right:0;bottom:0;z-index:7;
  padding:8px 14px calc(var(--safe-b) + 10px);
  display:flex;align-items:center;justify-content:center;gap:10px;
  font-size:10.5px;color:var(--muted);text-align:center;line-height:1.35;
}
#footer .privacy{max-width:34em}
#footer .ver{
  flex:none;opacity:.7;letter-spacing:.08em;
  border:1px solid var(--line);border-radius:999px;padding:3px 8px;
}

@media (min-width:760px){
  #stats{left:50%;transform:translateX(-50%);width:min(520px,90vw);right:auto}
  #gauge{bottom:calc(var(--safe-b) + 92px)}
  .g-num{font-size:56px}
}
/* short screens: keep the gauge clear of the footer */
@media (max-height:620px){
  #gauge{width:min(34vw,132px);bottom:calc(var(--safe-b) + 78px)}
  .g-num{font-size:min(11vw,42px)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important}
}