/* ============================================================
   Gym Tracker — estilos. Dos temas:
   body.theme-A = Neon Pulse (negro + lima neón, glow)
   body.theme-B = Soft Aurora (navy/violeta, glass, gradiente)
   ============================================================ */
:root{
  --radius:16px; --safe-b:env(safe-area-inset-bottom,0px);
  --ok:#22c55e; --danger:#ef4444;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;min-height:100vh;color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.45;overscroll-behavior-y:none}

/* ---------- TEMA A · NEON PULSE ---------- */
body.theme-A{
  --text:#eafff2; --muted:rgba(234,255,242,.55);
  --accent:#c6ff3d; --accent-ink:#0a0d0b; --accent2:#c6ff3d;
  --surface:rgba(255,255,255,.045); --surface2:#11160f;
  --border:rgba(198,255,61,.18); --border2:rgba(198,255,61,.30);
  --glow:0 0 22px rgba(198,255,61,.40);
  --cta-bg:var(--accent); --cta-grad:var(--accent);
  background:radial-gradient(130% 90% at 50% 0%,#16241a 0%,#0a0d0b 55%,#070807 100%) fixed;
}
/* ---------- TEMA B · SOFT AURORA ---------- */
body.theme-B{
  --text:#efeaff; --muted:rgba(239,234,255,.6);
  --accent:#c4b5fd; --accent-ink:#241152; --accent2:#f0abfc;
  --surface:rgba(255,255,255,.08); --surface2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.14); --border2:rgba(255,255,255,.24);
  --glow:0 10px 26px rgba(167,139,250,.35);
  --cta-bg:#a78bfa; --cta-grad:linear-gradient(135deg,#a78bfa,#f0abfc);
  background:linear-gradient(160deg,#1a1340 0%,#241a52 42%,#0f0b24 100%) fixed;
}
body.theme-B .card,body.theme-B .glassy{backdrop-filter:blur(8px)}

#app{max-width:560px;margin:0 auto;padding:18px 16px calc(96px + var(--safe-b));min-height:100vh}
h1{font-size:1.5rem;margin:.1em 0;font-weight:800}
h2{font-size:1.05rem;margin:1.3em 0 .5em;font-weight:700}
.loading{text-align:center;color:var(--muted);padding:44px}
.hidden{display:none!important}
.muted{color:var(--muted)}.center{text-align:center}
.row{display:flex;gap:10px;align-items:center}.row.between{justify-content:space-between}
.spacer{flex:1}
.lbl{font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.pill{font-size:.7rem;background:var(--surface2);color:var(--muted);padding:3px 10px;border-radius:99px;text-transform:capitalize}
.pill.hot{background:var(--accent);color:var(--accent-ink);font-weight:700}

/* botones */
button{font-family:inherit;font-size:1rem;cursor:pointer;border:none;border-radius:var(--radius);
  padding:13px 16px;background:var(--surface2);color:var(--text);transition:.15s}
button:active{transform:scale(.97)}
.btn-primary{background:var(--cta-grad);color:var(--accent-ink);font-weight:800;width:100%;box-shadow:var(--glow);
  text-transform:uppercase;letter-spacing:.04em;font-size:.92rem}
.btn-ghost{background:transparent;border:1px solid var(--border2);color:var(--text)}
.btn-danger{background:transparent;color:var(--danger);border:1px solid var(--danger)}
.btn-sm{padding:8px 12px;font-size:.85rem}
.btn-blue{background:var(--accent2);color:var(--accent-ink);font-weight:700}
.fab{position:fixed;right:18px;bottom:calc(104px + var(--safe-b));width:58px;height:58px;border-radius:50%;
  background:var(--cta-grad);color:var(--accent-ink);font-size:1.9rem;font-weight:800;box-shadow:var(--glow);z-index:30}

/* inputs */
input,select,textarea{width:100%;font-family:inherit;font-size:1rem;padding:13px;margin:6px 0 14px;
  background:var(--surface);border:1px solid var(--border);border-radius:12px;color:var(--text)}
input::placeholder{color:var(--muted)}
select option{color:#111;background:#fff}
label{font-size:.82rem;color:var(--muted);display:block;margin-top:6px}
textarea{resize:vertical;min-height:60px}

/* cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:15px;margin-bottom:12px}
.card.tap{cursor:pointer}.card.tap:active{background:var(--surface2)}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:15px;text-align:center}
.stat .num{font-size:1.8rem;font-weight:800;color:var(--accent)}
.stat .lbl{margin-top:3px}

/* anillo de progreso (home) */
.ring{width:160px;height:160px;border-radius:50%;margin:14px auto;display:flex;align-items:center;justify-content:center;
  background:conic-gradient(var(--accent) calc(var(--p,0)*1%),var(--surface2) 0);box-shadow:var(--glow)}
.ring .inner{width:128px;height:128px;border-radius:50%;background:var(--surface2);display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring .pct{font-size:2.1rem;font-weight:800;color:var(--accent)}

/* avatar / login */
.user-pick{display:flex;flex-direction:column;gap:12px;margin-top:24px}
.user-pick .card{display:flex;align-items:center;gap:14px;font-size:1.2rem;font-weight:700}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--cta-grad);display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--accent-ink)}

/* filas de ejercicio */
.ex-row{display:flex;gap:12px;align-items:center;padding:11px;background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:8px}
.ex-thumb{width:56px;height:56px;border-radius:12px;background:#fff;object-fit:contain;flex-shrink:0}
.ex-name{font-weight:700;font-size:.95rem}
.ex-meta{font-size:.74rem;color:var(--muted);text-transform:capitalize}

/* workout sets */
.ex-head{display:flex;gap:12px;align-items:center;margin-bottom:8px}
.ex-instr{font-size:.82rem;color:var(--muted);margin:6px 0;white-space:pre-line}
.prev-line{font-size:.74rem;color:var(--muted);margin:2px 0 8px}
.prev-line b{color:var(--accent)}
.set-hdr{display:grid;grid-template-columns:30px 1fr 1fr 50px;gap:8px;font-size:.66rem;color:var(--muted);text-transform:uppercase;margin-bottom:3px}
.set-line{display:grid;grid-template-columns:30px 1fr 1fr 50px;gap:8px;align-items:center;margin:6px 0}
.set-line .sn{color:var(--muted);text-align:center;font-weight:800}
.set-line input{margin:0;text-align:center;padding:11px 4px}
.check{width:50px;height:48px;border-radius:12px;background:var(--surface2);border:1px solid var(--border);font-size:1.3rem;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.check.done{background:var(--ok);color:#06210f;border-color:var(--ok)}
.tools{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}

/* timer overlay */
.rest-timer{position:fixed;left:0;right:0;bottom:0;z-index:60;color:var(--accent-ink);
  background:var(--cta-grad);padding:20px 16px calc(20px + var(--safe-b));text-align:center;box-shadow:0 -8px 30px rgba(0,0,0,.5)}
.rest-timer.ring-now{animation:flash .5s ease-in-out infinite}
@keyframes flash{50%{filter:brightness(1.4)}}
.rt-label{font-size:.78rem;letter-spacing:3px;opacity:.8;font-weight:700}
.rt-time{font-size:3.1rem;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.05}
.rt-actions{display:flex;gap:10px;justify-content:center;margin-top:8px}
.rt-btn{background:rgba(0,0,0,.18);color:var(--accent-ink);padding:10px 14px;font-size:.9rem;font-weight:700}

/* nav inferior */
.nav{position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;background:var(--surface2);
  border-top:1px solid var(--border);padding-bottom:var(--safe-b);backdrop-filter:blur(10px)}
.nav button{flex:1;background:none;border-radius:0;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.66rem;color:var(--muted);padding:10px 0}
.nav button span{font-size:1.35rem}
.nav button.active{color:var(--accent)}

/* overlays / modal */
.overlay{position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:var(--surface2);border:1px solid var(--border2);border-radius:20px;padding:20px;max-width:360px;width:100%}

/* PR celebration */
.pr-burst{text-align:center;padding:10px;border:1px solid var(--accent);border-radius:14px;background:var(--surface);margin-bottom:10px}
.pr-burst .t{font-weight:800;color:var(--accent);font-size:1.05rem}

/* misc */
.back{background:none;padding:8px 0;color:var(--accent);font-size:.95rem;font-weight:700}
.empty{text-align:center;color:var(--muted);padding:40px 16px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(108px + var(--safe-b));
  background:var(--surface2);border:1px solid var(--border2);padding:11px 18px;border-radius:99px;z-index:80;font-size:.9rem}
.photo-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.photo-grid img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:12px}
.seg{display:flex;gap:8px;margin:10px 0}
.seg button{flex:1;font-size:.8rem;padding:9px;border:1px solid var(--border)}
.seg button.on{background:var(--accent);color:var(--accent-ink);font-weight:700;border-color:var(--accent)}
canvas{max-width:100%}
.block-sep{margin:14px 0 6px;font-size:.74rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);border-top:1px solid var(--border);padding-top:10px}
.guide-box{margin:8px 0 4px;padding:10px;background:var(--surface2);border:1px solid var(--border);border-radius:12px}
.guide-box img{width:100%;max-width:300px;border-radius:10px;background:#fff;display:block;margin:0 auto 8px}
.guide-box ol{margin:4px 0 0 18px;padding:0;font-size:.84rem;color:var(--muted)}
.guide-box li{margin-bottom:5px}
.sec-head{font-size:1.3rem;font-weight:800;color:var(--accent);text-transform:uppercase;letter-spacing:.03em;margin:14px 0 2px}
.sec-sub{font-size:.8rem;color:var(--muted);margin-bottom:12px;display:flex;align-items:center;gap:10px}
.rdots{display:inline-flex;gap:5px}
.rdot{width:9px;height:9px;border-radius:50%;background:var(--surface2);border:1px solid var(--border)}
.rdot.on{background:var(--ok);border-color:var(--ok)}
.rdot.cur{background:var(--accent);border-color:var(--accent)}
.set-hdr2{display:flex;gap:8px;font-size:.66rem;color:var(--muted);text-transform:uppercase;margin:6px 0 2px}
.set-hdr2 span{flex:1;text-align:center}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:90;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:9px;height:15px;border-radius:2px;animation:fall 2s linear forwards}
@keyframes fall{to{transform:translateY(108vh) rotate(620deg);opacity:.6}}