/* Nix Gym — diseño dark mobile-first (paleta ecosistema Nix). */
:root{
  --bg:#0d0e12; --bg2:#12141a; --card:#171a21; --card2:#1d212b;
  --line:#262b36; --txt:#eef1f6; --mut:#8b93a5; --mut2:#5d6472;
  --acc:#ff8a2a; --acc2:#ff5722; --acc-soft:rgba(255,138,42,.14);
  --ok:#2dd47a; --warn:#ffc24b; --bad:#ff5c5c; --info:#4aa8ff;
  --grad:linear-gradient(135deg,#ff8a2a,#ff5722);
  --r:16px; --r2:12px; --shadow:0 6px 24px rgba(0,0,0,.35);
  --font:'Inter','SF Pro Text',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --tab-h:62px; --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--txt);font-family:var(--font);
  font-size:16px;line-height:1.45;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
#app{max-width:680px;margin:0 auto;min-height:100dvh;position:relative}
img{max-width:100%;display:block}
button{font-family:var(--font);cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:var(--font);font-size:16px;color:var(--txt);
  background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:12px 14px;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--acc);border-color:transparent}
.hidden{display:none!important}
.mut{color:var(--mut)} .mut2{color:var(--mut2)} .small{font-size:.82rem}
a{color:var(--acc);text-decoration:none}
.mono{font-variant-numeric:tabular-nums}

/* ---------- cabecera ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;
  padding:14px 16px 10px;background:linear-gradient(180deg,rgba(13,14,18,.98),rgba(13,14,18,.88) 70%,transparent);
  backdrop-filter:blur(8px)}
.topbar h1{font-size:1.15rem;margin:0;font-weight:800;letter-spacing:.2px;display:flex;align-items:center;gap:8px;flex:1;min-width:0}
.topbar h1 .em{font-size:1.2rem}
.subnav{display:flex;gap:8px;padding:0 16px 6px;overflow-x:auto;scrollbar-width:none}
.subnav::-webkit-scrollbar{display:none}

/* ---------- botones ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;
  padding:12px 18px;border-radius:14px;font-weight:700;font-size:1rem;border:1px solid transparent;
  transition:transform .08s ease, filter .15s;user-select:none}
.btn:active{transform:scale(.97)}
.btn-p{background:var(--grad);color:#fff;box-shadow:0 4px 18px rgba(255,90,30,.35)}
.btn-g{background:var(--card2);border-color:var(--line);color:var(--txt)}
.btn-ghost{background:transparent;color:var(--mut);border-color:var(--line)}
.btn-danger{background:rgba(255,92,92,.12);color:var(--bad);border-color:rgba(255,92,92,.3)}
.btn-sm{min-height:38px;padding:7px 13px;font-size:.88rem;border-radius:11px}
.btn-lg{width:100%;min-height:56px;font-size:1.1rem;border-radius:18px}
.btn[disabled]{opacity:.45;pointer-events:none}
.btn svg{flex:none}

/* ---------- tarjetas ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:16px;margin:0 0 12px}
.card-t{display:flex;align-items:center;gap:8px;margin-bottom:6px;font-weight:700}
.row{display:flex;align-items:center;gap:10px}
.spread{justify-content:space-between}
.wrap{flex-wrap:wrap}
.grow{flex:1;min-width:0}
.g8{gap:8px}.g4{gap:4px}
.mt8{margin-top:8px}.mt16{margin-top:16px}.mb8{margin-bottom:8px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;
  background:var(--card2);border:1px solid var(--line);color:var(--mut);font-size:.86rem;
  font-weight:600;white-space:nowrap}
.chip.on{background:var(--acc-soft);border-color:var(--acc);color:var(--acc)}
.chip-row{display:flex;gap:8px;overflow-x:auto;padding:2px 16px 8px;scrollbar-width:none}
.chip-row::-webkit-scrollbar{display:none}
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 9px;border-radius:999px;font-size:.74rem;font-weight:800}
.badge-ok{background:rgba(45,212,122,.15);color:var(--ok)}
.badge-warn{background:rgba(255,194,75,.15);color:var(--warn)}
.badge-bad{background:rgba(255,92,92,.15);color:var(--bad)}
.badge-acc{background:var(--acc-soft);color:var(--acc)}

/* ---------- tabs inferiores ---------- */
.tabbar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:680px;
  display:flex;background:rgba(18,20,26,.92);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);padding-bottom:var(--safe-b);z-index:40}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px 7px;
  color:var(--mut2);font-size:.62rem;font-weight:700;letter-spacing:.3px;text-transform:uppercase;min-height:calc(var(--tab-h) - 4px)}
.tab svg{width:24px;height:24px}
.tab.on{color:var(--acc)}
.tab.on svg{filter:drop-shadow(0 0 10px rgba(255,138,42,.6))}
.view{padding:0 0 calc(var(--tab-h) + var(--safe-b) + 24px)}
.view.navless{padding-bottom:30px}

/* ---------- login ---------- */
.login-wrap{min-height:100dvh;display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:30px 22px;text-align:center;background:
  radial-gradient(900px 500px at 20% -10%,rgba(255,90,30,.16),transparent 60%),
  radial-gradient(800px 500px at 110% 110%,rgba(255,138,42,.10),transparent 60%),var(--bg)}
.login-logo{font-size:4.2rem;line-height:1;margin-bottom:10px}
.login-wrap h1{font-size:2rem;margin:6px 0 4px;font-weight:900}
.login-wrap p{color:var(--mut);max-width:320px;margin:4px auto 26px}

/* ---------- grid ejercicios ---------- */
.ex-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:10px;padding:4px 16px 10px}
.ex-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;
  transition:transform .08s ease}
.ex-card:active{transform:scale(.97)}
.ex-card .ph{aspect-ratio:1/1;background:var(--card2);display:flex;align-items:center;justify-content:center;
  font-size:2rem;color:var(--mut2);overflow:hidden}
.ex-card img{width:100%;height:100%;object-fit:cover}
.ex-card .nm{padding:8px 10px 10px;font-size:.82rem;font-weight:650;line-height:1.25;display:-webkit-box;
  -webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.3em}
.ex-card .tagline{display:flex;gap:4px;padding:0 10px 9px}
.tdot{width:7px;height:7px;border-radius:99px;flex:none;margin-top:4px}
.t-pecho{background:#ff5c7a}.t-espalda{background:#4aa8ff}.t-hombros{background:#c586ff}
.t-biceps{background:#ff9f43}.t-triceps{background:#ffd166}.t-piernas{background:#2dd47a}
.t-gluteos{background:#7be0ad}.t-core{background:#ff6b6b}.t-antebrazo{background:#8ea0b8}
.t-cuerpo-completo{background:#ff8a2a}.t-cardio{background:#f4a261}.t-brazos{background:#e89cff}
.t-maquina{background:#6c7a94}.t-sin-clasificar{background:#4a5060}
.tbar{position:absolute;left:0;right:0;bottom:0;height:4px;border-radius:0 0 14px 14px}

/* ---------- pantalla de entrenamiento ---------- */
.wk-hero{padding:14px 16px 4px}
.wk-ex-nav{display:flex;gap:8px;overflow-x:auto;padding:4px 16px 10px;scrollbar-width:none}
.wk-ex-nav::-webkit-scrollbar{display:none}
.ex-pill{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:64px;
  padding:8px;background:var(--card);border:1px solid var(--line);border-radius:14px;cursor:pointer;position:relative}
.ex-pill.on{border-color:var(--acc);background:var(--acc-soft)}
.ex-pill .th{width:44px;height:44px;border-radius:10px;background:var(--card2);overflow:hidden;display:flex;align-items:center;justify-content:center;color:var(--mut2);font-size:1.3rem}
.ex-pill img{width:44px;height:44px;object-fit:cover}
.ex-pill .nm{font-size:.62rem;font-weight:700;max-width:64px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ex-pill .prog{font-size:.6rem;color:var(--mut)}
.ex-pill .dot{width:8px;height:8px;border-radius:99px;background:var(--line);position:absolute;top:6px;right:6px}
.ex-pill .dot.full{background:var(--ok)}
.ex-stage{position:relative}
.ex-preview{border-radius:var(--r);overflow:hidden;background:#000;border:1px solid var(--line);margin:2px 16px 0;
  aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;background-size:cover;background-position:center}
.ex-preview img{width:100%;height:100%;object-fit:cover}
.ex-preview .ph{color:#fff;font-size:3.5rem;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.ex-title{padding:12px 16px 2px}
.ex-title h2{margin:0 0 2px;font-size:1.35rem;font-weight:900}
.set-table{margin:8px 16px 0}
.set-row{display:flex;align-items:center;gap:8px;padding:10px 4px;border-bottom:1px solid var(--line)}
.set-row:last-child{border-bottom:0}
.set-idx{width:30px;height:30px;border-radius:10px;background:var(--card2);display:flex;align-items:center;
  justify-content:center;font-weight:800;font-size:.9rem;color:var(--mut);flex:none}
.set-idx.done{background:var(--acc-soft);color:var(--acc)}
.set-cell{flex:1;min-width:0;font-weight:650;font-size:.95rem;text-align:right}
.set-cell:first-of-type{text-align:left}
.set-edit{color:var(--mut2);font-size:.7rem;padding:6px}
.entry-bar{position:sticky;bottom:calc(var(--tab-h) + var(--safe-b) + 8px);margin:14px 12px 6px;
  background:rgba(23,26,33,.94);backdrop-filter:blur(16px);border:1px solid var(--line);
  border-radius:20px;padding:10px;box-shadow:var(--shadow);z-index:25}
.stepper{display:flex;align-items:center;background:var(--card2);border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.stepper button{width:52px;height:52px;font-size:1.5rem;font-weight:800;color:var(--acc);flex:none}
.stepper .val{flex:1;text-align:center;font-weight:900;font-size:1.25rem;min-width:0}
.stepper .unit{font-size:.7rem;color:var(--mut);display:block;font-weight:600}
.entry-btn{height:52px;border-radius:14px;background:var(--grad);color:#fff;font-weight:900;font-size:1.05rem;
  display:flex;align-items:center;justify-content:center;gap:8px;flex:1}
.prev-chip{display:flex;justify-content:center;gap:10px;padding:4px 0 2px;font-size:.8rem;color:var(--mut)}

/* ---------- temporizador ---------- */
.timer-mask{position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;align-items:center;
  justify-content:center;background:rgba(8,9,12,.88);backdrop-filter:blur(10px)}
.timer-ring{position:relative;width:230px;height:230px}
.timer-ring svg{transform:rotate(-90deg)}
.timer-ring .tval{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.timer-ring .tnum{font-size:3.6rem;font-weight:900;font-variant-numeric:tabular-nums}
.timer-acts{display:flex;gap:12px;margin-top:26px;width:min(320px,86vw)}
.timer-label{color:var(--mut);font-weight:700;letter-spacing:.4px;text-transform:uppercase;font-size:.72rem}

/* ---------- rutinas / listas ---------- */
.r-card{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:14px;margin-bottom:10px;cursor:pointer}
.r-card .ico{width:46px;height:46px;border-radius:14px;background:var(--acc-soft);color:var(--acc);
  display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex:none}
.drag-handle{cursor:grab;color:var(--mut2);font-size:1.2rem;padding:8px}
.r-item{display:flex;align-items:center;gap:10px;background:var(--card2);border:1px solid var(--line);
  border-radius:14px;padding:8px 10px;margin-bottom:8px}
.r-item .ord{width:24px;text-align:center;font-weight:800;color:var(--mut2)}
.r-item img,.r-item .noimg{width:44px;height:44px;border-radius:10px;object-fit:cover;background:var(--card);flex:none}
.r-item .noimg{display:flex;align-items:center;justify-content:center;color:var(--mut2);font-size:1.2rem}
.r-item .meta{font-size:.72rem;color:var(--mut)}
.dragging{opacity:.4}
.num-inline{display:flex;gap:6px;align-items:center}
.num-inline input{width:64px;padding:8px;text-align:center}
.num-inline .lbl{font-size:.75rem;color:var(--mut)}

/* ---------- estadísticas ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:4px 16px 12px}
.stat{border:1px solid var(--line);border-radius:16px;padding:14px;background:var(--card)}
.stat .v{font-size:1.5rem;font-weight:900;letter-spacing:-.5px}
.stat .k{font-size:.74rem;color:var(--mut);font-weight:700;text-transform:uppercase;letter-spacing:.4px;margin-bottom:4px}
.stat.wide{grid-column:1/-1}
.chart-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;margin-bottom:12px}
.hist-row{display:flex;align-items:center;gap:12px;padding:11px 4px;border-bottom:1px solid var(--line)}
.hist-row:last-child{border-bottom:0}

/* ---------- misc ---------- */
.section-t{padding:18px 16px 8px;font-size:.78rem;font-weight:800;color:var(--mut);
  text-transform:uppercase;letter-spacing:.8px}
.fab{position:fixed;right:max(16px,calc((100vw - 680px)/2 + 16px));bottom:calc(var(--tab-h) + var(--safe-b) + 18px);
  width:58px;height:58px;border-radius:20px;background:var(--grad);color:#fff;font-size:1.7rem;
  display:flex;align-items:center;justify-content:center;box-shadow:0 8px 26px rgba(255,90,30,.45);z-index:30}
.empty{padding:44px 24px;text-align:center;color:var(--mut)}
.empty .big{font-size:2.6rem;margin-bottom:8px}
.skeleton{position:relative;overflow:hidden;background:var(--card2);border-radius:12px;color:transparent!important}
.skeleton::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);
  animation:shimmer 1.4s infinite}
@keyframes shimmer{from{transform:translateX(-100%)}to{transform:translateX(100%)}}

/* ---------- overlays ---------- */
.sheet{position:fixed;inset:0;z-index:70;display:flex;align-items:flex-end;justify-content:center;background:rgba(5,6,9,.66);
  backdrop-filter:blur(3px);animation:fade .15s ease}
.sheet .box{background:var(--bg2);border:1px solid var(--line);border-top-left-radius:24px;border-top-right-radius:24px;
  width:100%;max-width:680px;max-height:88dvh;overflow-y:auto;padding:20px 18px calc(20px + var(--safe-b));
  animation:up .2s cubic-bezier(.2,.9,.3,1)}
.sheet h3{margin:2px 0 14px;font-size:1.15rem}
@keyframes up{from{transform:translateY(40px);opacity:.6}to{transform:none;opacity:1}}
@keyframes fade{from{opacity:0}to{opacity:1}}
.center-dialog{align-items:center}
.center-dialog .box{border-radius:24px;max-width:min(480px,92vw);max-height:86dvh}
.toasts{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:90;display:flex;flex-direction:column;gap:8px;width:min(440px,92vw)}
.toast{background:var(--card2);border:1px solid var(--line);color:var(--txt);padding:12px 16px;border-radius:14px;
  box-shadow:var(--shadow);font-weight:600;font-size:.92rem;display:flex;gap:8px;align-items:center;animation:up .2s ease}
.toast.err{border-color:rgba(255,92,92,.4)}
.offline-banner{position:fixed;top:0;left:50%;transform:translateX(-50%);z-index:80;width:100%;max-width:680px;
  background:#6b4d12;color:#ffd98a;text-align:center;padding:7px 12px;font-size:.8rem;font-weight:700}
.pill-dot{width:10px;height:10px;border-radius:99px;display:inline-block;margin-right:6px}
.online{background:var(--ok)} .offline{background:var(--warn)} .sync{background:var(--info)}

/* buscador */
.searchbar{margin:2px 16px 10px;position:relative}
.searchbar input{padding-left:40px;border-radius:14px}
.searchbar .mag{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--mut2)}
.switch{position:relative;width:50px;height:29px;flex:none}
.switch input{opacity:0;width:0;height:0}
.switch .sl{position:absolute;inset:0;background:var(--card2);border:1px solid var(--line);border-radius:99px;transition:.15s}
.switch .sl::before{content:'';position:absolute;width:21px;height:21px;border-radius:99px;left:3px;top:2px;background:var(--mut);transition:.15s}
.switch input:checked+.sl{background:var(--acc-soft);border-color:var(--acc)}
.switch input:checked+.sl::before{transform:translateX(21px);background:var(--acc)}
.week-days{display:flex;gap:6px}
.wday{width:40px;height:40px;border-radius:13px;background:var(--card2);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.82rem;color:var(--mut)}
.wday.on{background:var(--acc);color:#fff;border-color:var(--acc)}
kbd,.key{font-family:var(--font);font-size:.8rem}
video{width:100%;border-radius:var(--r)}
.lic{font-size:.7rem;color:var(--mut2);line-height:1.4}
.crumb{color:var(--mut);font-size:.8rem;display:flex;align-items:center;gap:4px;margin-bottom:2px}
.sync-state{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--mut);padding:8px 16px 0}
@media (min-width:720px){.view{padding:0 8px calc(var(--tab-h) + 30px)}}

/* ---------- tema claro (opcional) ---------- */
body.light{--bg:#f4f5f8;--bg2:#ffffff;--card:#ffffff;--card2:#eef0f4;--line:#e2e5ec;
  --txt:#16181d;--mut:#5c6572;--mut2:#8b93a5;--shadow:0 6px 24px rgba(20,30,60,.08)}
body.light .topbar{background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(255,255,255,.9) 70%,transparent)}
body.light .tabbar{background:rgba(255,255,255,.92);border-top-color:var(--line)}
body.light .timer-mask{background:rgba(244,245,248,.9)}
body.light input,body.light select,body.light textarea{background:#fff}
body.light .lic{color:var(--mut2)}