/* pages/trainer/shell.css — app shell: shellui topbar, sidebar, tabs, goal card.
   Split from the pre-#149 monolith — rule ORDER preserved; see docs/architecture.md
   ("CSS layers") for the load-order contract each page's <head> follows. */
/* ---- app shell (UX Pilot direction), scoped to the trainer via
   body.shellui so the shared pages above keep their chrome ---- */
.shellui .topbar{
  background:color-mix(in srgb, var(--panel) 82%, transparent);
  backdrop-filter:blur(12px);padding:0 20px;
}
.shellui .brand{min-height:52px;padding:6px 0;margin-bottom:0;gap:13px}
/* Logo and wordmark: components/brand.css (#147). */
.shellui .sub{font-size:12px;font-weight:550}

/* ---- layout: sidebar + content ---- */
/* No min-height:0 here. body is height:100% and a column flex container, so
   a shell allowed to shrink below its content lets a long page run under the
   footer instead of pushing it down — the sticky sidebar sizes itself and
   needs nothing from the parent. */
.shell{flex:1;display:flex;align-items:stretch}
.side{
  width:228px;flex:none;border-right:1px solid var(--line);
  padding:18px 12px 16px;display:flex;flex-direction:column;
  position:sticky;top:52px;align-self:flex-start;
  height:calc(100vh - 52px);overflow-y:auto;scrollbar-width:none;
}
.side::-webkit-scrollbar{display:none}
.tabs{display:flex;flex-direction:column;gap:3px}
.tabs button{
  background:none;border:0;border-radius:11px;color:var(--dim);text-align:left;
  padding:10px 14px;font-size:13px;font-weight:550;cursor:pointer;
}
.tabs button:hover{background:var(--hover);color:var(--ink)}
.tabs button.active{background:var(--accent-soft);color:var(--accent);font-weight:700}
.tabs button:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}

/* the sidebar's contextual block (library pillars + filters) */
.sx-k{
  font-size:9.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mute);padding:0 14px;margin:18px 0 8px;
}
.sx-row{
  display:flex;justify-content:space-between;align-items:baseline;gap:8px;width:100%;
  background:none;border:0;border-radius:9px;padding:7px 14px;cursor:pointer;
  font-size:12.5px;color:var(--dim);text-align:left;
}
.sx-row:hover{background:var(--hover);color:var(--ink)}
.sx-row.on{background:var(--hover);color:var(--ink);font-weight:700}
.sx-row i{font:600 11px var(--display);font-style:normal;color:var(--mute)}
.sx-row:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}
.sx-chips{display:flex;gap:6px;padding:0 14px;flex-wrap:wrap}
.sx-chip{
  background:var(--panel);border:1px solid var(--line);border-radius:8px;
  padding:6px 12px;font-size:11.5px;color:var(--dim);cursor:pointer;
}
.sx-chip.on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:700}
.sx-chip:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}
.sx-field{
  display:block;width:calc(100% - 28px);margin:0 14px;
  background:var(--panel);border:1px solid var(--line);border-radius:9px;
  padding:8px 11px;font-size:12px;color:var(--ink);outline:none;
}
.sx-field:focus{border-color:var(--accent)}
.sx-drill{margin:14px 14px 0}

/* the daily-goal card — the ensō's minutes as the sidebar bar */
.goalcard{
  margin-top:auto;border:1px solid var(--line);background:var(--panel);
  border-radius:15px;padding:14px;
}
.goalcard .gc-k{
  font-size:9.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--dim);margin-bottom:9px;
}
.goalcard .gc-row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:7px}
.goalcard .gc-row b{font-size:11.5px}
.goalcard .gc-row span{font:600 10px var(--display);color:var(--dim)}
.goalcard .gc-bar{height:4px;background:var(--panel2);border-radius:2px;overflow:hidden}
.goalcard .gc-bar i{display:block;height:100%;background:var(--accent);border-radius:2px}

main{flex:1;max-width:1000px;width:100%;margin:0 auto;padding:22px 20px 40px}
.shellui main{max-width:1020px;padding:26px 32px 60px;min-width:0}
@media(min-width:900px){.shellui .foot{margin-left:228px}}

/* ---- the sidebar becomes a bottom tab bar under 900px ---- */
@media(max-width:899px){
  .shell{display:block}
  .side{
    position:fixed;left:0;right:0;bottom:0;top:auto;z-index:30;
    width:auto;height:auto;flex-direction:row;align-items:center;
    border-right:0;border-top:1px solid var(--line);background:var(--panel);
    padding:5px 8px;overflow:visible;
  }
  .tabs{flex-direction:row;flex:1;gap:2px}
  .tabs button{
    flex:1;text-align:center;padding:7px 3px;font-size:10px;font-weight:600;
    white-space:normal;line-height:1.25;border-radius:9px;
  }
  #sidectx,.goalcard{display:none}
  .shellui main{padding:20px 16px 40px}
  .shellui .foot{margin-bottom:54px}
}
.foot{
  border-top:1px solid var(--line);background:var(--panel);padding:8px 20px;
  display:flex;align-items:center;gap:14px;font-size:12px;color:var(--dim)
}
.spacer{flex:1}
.linkbtn{background:none;border:0;color:var(--accent2);cursor:pointer;font-size:12px;padding:2px 4px}
.linkbtn.danger{color:var(--bad)}

h2{font-size:19px;margin:0 0 4px;letter-spacing:-.2px}
h3{font-size:14px;margin:26px 0 10px;color:var(--dim);text-transform:uppercase;letter-spacing:.6px}
p.lede{color:var(--dim);margin:0 0 18px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:14px}
.grid{display:grid;gap:12px}
.g2{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}

.pill{display:inline-block;background:var(--panel2);border:1px solid var(--line);border-radius:99px;padding:2px 10px;font-size:11.5px;color:var(--dim)}
.pill.on{background:var(--accent);border-color:var(--accent);color:#fff}
.pill.good{color:var(--good);border-color:var(--good)}
.pill.warn{color:var(--warn);border-color:var(--warn)}