/* ============ Rutina JK — estilos ============ */
:root{
  --bg:#0b0b0d;
  --bg-soft:#141419;
  --card:#17181d;
  --card-2:#1e1f26;
  --line:#2a2b33;
  --txt:#f4f4f6;
  --muted:#9a9aa6;
  --muted-2:#6f6f7b;
  --accent:#c7f94b;      /* volt */
  --accent-ink:#0b0b0d;
  --danger:#ff6b6b;
  --radius:18px;
  --radius-sm:12px;
  --maxw:640px;
  --safe-b:env(safe-area-inset-bottom, 0px);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--txt);font-family:var(--font);-webkit-font-smoothing:antialiased}
body{overflow-x:hidden;min-height:100vh;line-height:1.45}
img,video{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
a{color:inherit;text-decoration:none}

#app{max-width:var(--maxw);margin:0 auto;padding:0 clamp(14px,4vw,22px) calc(40px + var(--safe-b))}

/* ---------- Header / topbar ---------- */
.topbar{display:flex;align-items:center;gap:12px;padding:clamp(16px,5vw,26px) 0 14px;position:sticky;top:0;background:linear-gradient(var(--bg) 72%,transparent);z-index:20}
.topbar .back{width:40px;height:40px;border-radius:50%;background:var(--card);display:flex;align-items:center;justify-content:center;font-size:20px;flex:0 0 auto;border:1px solid var(--line)}
.topbar .back:active{transform:scale(.94)}
.topbar h1{font-size:clamp(1.05rem,4.4vw,1.35rem);letter-spacing:.02em;font-weight:800}
.topbar .sub{font-size:.72rem;color:var(--muted);font-weight:500;letter-spacing:.04em;text-transform:uppercase}

/* ---------- Home hero ---------- */
.hero{padding:6px 0 18px}
.hero .kicker{color:var(--accent);font-weight:800;letter-spacing:.16em;font-size:.72rem;text-transform:uppercase}
.hero h2{font-size:clamp(1.9rem,8vw,2.9rem);line-height:1.02;font-weight:900;letter-spacing:-.02em;margin:8px 0 10px}
.hero p{color:var(--muted);font-size:clamp(.92rem,3.4vw,1rem);max-width:34ch}
.hero .credit{margin-top:14px;display:inline-flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);padding:7px 12px;border-radius:999px;font-size:.8rem;color:var(--muted)}
.hero .credit b{color:var(--txt);font-weight:700}

/* ---------- Day cards ---------- */
.section-label{display:flex;align-items:center;justify-content:space-between;margin:22px 2px 12px}
.section-label span{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);font-weight:700}
.days{display:grid;gap:12px}
.day-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;overflow:hidden;transition:transform .12s ease,border-color .2s}
.day-card:active{transform:scale(.985)}
.day-card .num{position:absolute;top:-10px;right:6px;font-size:5.2rem;font-weight:900;color:#ffffff08;line-height:1;letter-spacing:-.04em}
.day-card .dtag{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:800}
.day-card h3{font-size:clamp(1.5rem,6.2vw,1.9rem);font-weight:900;letter-spacing:-.01em;margin:2px 0 4px}
.day-card .muscles{color:var(--muted);font-size:.86rem}
.day-card .meta{display:flex;align-items:center;gap:14px;margin-top:14px;font-size:.78rem;color:var(--muted)}
.day-card .meta b{color:var(--txt)}
.progress-ring{margin-left:auto;display:flex;align-items:center;gap:8px;font-weight:800;font-size:.8rem;color:var(--accent)}
.bar{height:5px;border-radius:99px;background:#ffffff12;margin-top:12px;overflow:hidden}
.bar > i{display:block;height:100%;background:var(--accent);width:0;border-radius:99px;transition:width .3s}

/* ---------- Day view: blocks ---------- */
.day-head{margin:2px 0 6px}
.day-head .dtag{color:var(--accent);font-size:.72rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.day-head h2{font-size:clamp(2rem,9vw,2.8rem);font-weight:900;letter-spacing:-.02em;line-height:1}
.day-head p{color:var(--muted);margin-top:6px;font-size:.9rem}

.block{margin-top:22px}
.block .bhead{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:10px}
.block .bhead .bt{font-size:1.05rem;font-weight:800}
.block .bhead .bm{font-size:.72rem;color:var(--muted-2);text-transform:uppercase;letter-spacing:.1em;font-weight:700}
.block .guide{display:inline-flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.chip{background:var(--card-2);border:1px solid var(--line);border-radius:999px;padding:5px 11px;font-size:.76rem;color:var(--muted);font-weight:600}
.chip b{color:var(--txt)}
.chip.sug{border-style:dashed;color:var(--muted-2)}
.divider{display:flex;align-items:center;gap:12px;margin:26px 0 4px;color:var(--muted-2);font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;font-weight:700}
.divider::before,.divider::after{content:"";height:1px;background:var(--line);flex:1}

/* ---------- Exercise list rows ---------- */
.ex-list{display:grid;gap:10px}
.ex-row{display:flex;align-items:center;gap:13px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:9px;transition:transform .1s,border-color .2s}
.ex-row:active{transform:scale(.99)}
.ex-row.done{border-color:var(--accent);background:linear-gradient(90deg,#c7f94b12,transparent)}
.ex-row .thumb{width:62px;height:80px;border-radius:9px;background:var(--card-2) center/cover no-repeat;flex:0 0 auto;position:relative;overflow:hidden}
.ex-row .thumb::after{content:"▶";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:.8rem;color:#fff;background:#0007;opacity:.85}
.ex-row.done .thumb::after{content:"✓";color:var(--accent);background:#000a}
.ex-row .info{min-width:0;flex:1}
.ex-row .info .n{font-weight:700;font-size:.98rem;line-height:1.2}
.ex-row .info .t{color:var(--muted);font-size:.76rem;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ex-row .info .en{color:var(--muted-2);font-size:.72rem;font-style:italic}
.ex-row .idx{font-size:.9rem;font-weight:800;color:var(--muted-2);width:22px;text-align:center;flex:0 0 auto}

/* ---------- Exercise detail ---------- */
.ex-video{position:relative;border-radius:var(--radius);overflow:hidden;background:#000;margin-top:6px;aspect-ratio:3/4;max-height:64vh;margin-inline:auto;width:100%;max-width:420px}
.ex-video video{width:100%;height:100%;object-fit:cover}
.ex-title{margin:16px 2px 0}
.ex-title .en{color:var(--muted-2);font-size:.82rem;font-style:italic}
.ex-title h2{font-size:clamp(1.5rem,6.5vw,2rem);font-weight:900;letter-spacing:-.01em;line-height:1.05;margin:2px 0 8px}
.target{display:inline-block;background:#c7f94b18;color:var(--accent);border:1px solid #c7f94b33;padding:4px 11px;border-radius:999px;font-size:.76rem;font-weight:700}
.cue{margin:14px 0;color:#dcdce2;font-size:clamp(.95rem,3.6vw,1.05rem);line-height:1.55;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:12px;padding:13px 15px}

/* set tracker */
.tracker{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:15px;margin-top:8px}
.tracker .thead{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.tracker .thead .lbl{font-weight:800;font-size:.95rem}
.tracker .thead .edit{font-size:.78rem;color:var(--accent);font-weight:700;padding:5px 8px}
.sets{display:grid;gap:8px}
.set-row{display:flex;align-items:center;gap:12px;background:var(--card-2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.set-row .sn{font-weight:800;color:var(--muted);font-size:.82rem;width:52px}
.set-row .reps{color:var(--muted);font-size:.82rem}
.set-row .chk{margin-left:auto;width:30px;height:30px;border-radius:9px;border:2px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:.95rem;color:transparent;transition:.15s}
.set-row.on{border-color:var(--accent)}
.set-row.on .chk{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.set-row.on .sn{color:var(--txt)}
.rest-btn{margin-top:12px;width:100%;background:var(--card-2);border:1px solid var(--line);border-radius:12px;padding:12px;font-weight:700;color:var(--txt);display:flex;align-items:center;justify-content:center;gap:8px}
.rest-btn:active{transform:scale(.99)}

.weight-row{display:flex;align-items:center;gap:10px;margin-top:12px}
.weight-row label{font-size:.82rem;color:var(--muted);font-weight:600}
.weight-row input{flex:1;background:var(--card-2);border:1px solid var(--line);border-radius:10px;padding:10px 12px;color:var(--txt);font-size:.95rem;min-width:0}
.weight-row input:focus{outline:none;border-color:var(--accent)}

.edit-panel{display:none;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.edit-panel.open{display:flex}
.edit-panel .f{flex:1;min-width:120px}
.edit-panel label{display:block;font-size:.72rem;color:var(--muted);margin-bottom:4px;font-weight:600}
.edit-panel input{width:100%;background:var(--card-2);border:1px solid var(--line);border-radius:10px;padding:9px 11px;color:var(--txt);font-size:.95rem}
.edit-panel input:focus{outline:none;border-color:var(--accent)}

/* nav prev/next */
.ex-nav{display:flex;gap:10px;margin-top:18px}
.ex-nav button{flex:1;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;font-weight:800;font-size:.9rem;color:var(--txt)}
.ex-nav button.next{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.ex-nav button:disabled{opacity:.35}
.ex-nav button:active{transform:scale(.98)}
.ex-count{text-align:center;color:var(--muted-2);font-size:.78rem;margin-top:14px;font-weight:600}

/* ---------- Buttons ---------- */
.btn{border-radius:12px;padding:13px 16px;font-weight:800;font-size:.92rem;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn.solid{background:var(--accent);color:var(--accent-ink)}
.btn.ghost{background:var(--card-2);border:1px solid var(--line);color:var(--txt)}
.btn:active{transform:scale(.98)}

/* offline download */
.offline-card{margin-top:26px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.offline-card .oh{display:flex;align-items:center;gap:10px;font-weight:800;font-size:.95rem;margin-bottom:6px}
.offline-card p{color:var(--muted);font-size:.82rem;margin-bottom:12px}
.offline-card .bar{margin-bottom:12px}
.foot{margin-top:34px;text-align:center;color:var(--muted-2);font-size:.74rem;line-height:1.7}
.foot a{color:var(--muted)}

/* ---------- Rest overlay ---------- */
.rest-overlay{position:fixed;inset:0;background:#0b0b0deb;backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:50;padding:24px}
.rest-overlay[hidden]{display:none}
.rest-card{text-align:center;width:100%;max-width:320px}
.rest-label{color:var(--muted);text-transform:uppercase;letter-spacing:.16em;font-size:.8rem;font-weight:700}
.rest-time{font-size:clamp(4.5rem,26vw,7rem);font-weight:900;letter-spacing:-.03em;line-height:1;margin:10px 0 22px;color:var(--accent);font-variant-numeric:tabular-nums}
.rest-actions{display:flex;gap:12px;justify-content:center;margin-bottom:16px}
.rest-actions .btn{flex:1}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(24px + var(--safe-b));transform:translateX(-50%);background:var(--accent);color:var(--accent-ink);padding:11px 18px;border-radius:999px;font-weight:800;font-size:.85rem;z-index:60;box-shadow:0 8px 30px #0008;opacity:0;transition:opacity .2s,transform .2s;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* fade-in de vistas */
.view{animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- Desktop ---------- */
@media (min-width:700px){
  .days{grid-template-columns:1fr 1fr}
  .hero h2{font-size:3rem}
}