/* Trainer Hub — tokens derive from the validated dataviz reference palette.
   Gym theme (gyms.theme jsonb) overrides --brand/--accent/--radius at runtime. */

:root {
  color-scheme: light;
  /* surfaces & ink (dataviz chrome) */
  --surface-1: #fcfcfb;
  --plane: #f9f9f7;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  /* categorical series (validated order) */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
  /* status (reserved) */
  --good: #0ca30c;
  --good-text: #006300;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  /* brand (overridden by gym theme) */
  --brand: #16324f;
  --brand-ink: #ffffff;
  --accent: #2a78d6;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(11,11,11,.05), 0 4px 16px rgba(11,11,11,.06);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--plane); color: var(--ink); font-size: 15px; line-height: 1.45; }
button { font: inherit; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); }

/* ---------- shell ---------- */
#app { min-height: 100dvh; display: flex; flex-direction: column; }

.topbar {
  background: var(--brand); color: var(--brand-ink);
  padding: 10px 16px; display: flex; align-items: center; gap: 12px;
  position: sticky; top: 0; z-index: 20;
}
.topbar .logo { font-weight: 700; letter-spacing: .2px; font-size: 16px; display: flex; gap: 8px; align-items: center; }
.topbar .logo .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.topbar .spacer { flex: 1; }
.topbar .who { font-size: 13px; opacity: .85; }
.topbar button.ghost { background: rgba(255,255,255,.12); color: var(--brand-ink); border: 0; border-radius: 8px; padding: 6px 10px; font-size: 13px; }

.layout { display: flex; flex: 1; min-height: 0; }
.main { flex: 1; padding: 20px clamp(14px, 3vw, 32px) 96px; max-width: 1060px; margin: 0 auto; width: 100%; }

/* trainer sidebar (desktop) */
.sidenav { width: 210px; padding: 18px 10px; border-right: 1px solid var(--border); background: var(--surface-1); display: none; flex-direction: column; gap: 2px; }
.sidenav a { display: flex; gap: 10px; align-items: center; padding: 9px 12px; border-radius: 9px; color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: 14px; }
.sidenav a.active { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--ink); }
.sidenav a .n { font-size: 16px; width: 20px; text-align: center; }
.sidenav .badge { margin-left: auto; }

/* client bottom tabs (mobile-first) */
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; background: var(--surface-1); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar a { flex: 1; text-align: center; padding: 8px 2px 9px; text-decoration: none; color: var(--muted); font-size: 11px; font-weight: 600; }
.tabbar a .ic { display: block; font-size: 19px; line-height: 1.2; }
.tabbar a.active { color: var(--accent); }
.tabbar a { position: relative; }
.tabbar .badge, .sidenav .badge { background: var(--critical); color: #fff; font-size: 10px; border-radius: 99px; padding: 1px 5px; font-weight: 700; }
.tabbar .badge { position: absolute; top: 3px; right: 22%; }

@media (min-width: 900px) {
  .role-trainer .sidenav { display: flex; }
  .role-trainer .tabbar { display: none; }
}

/* ---------- primitives ---------- */
.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.card + .card, .stack > * + * { margin-top: 14px; }
.card h3 { margin: 0 0 10px; font-size: 15px; }
.row { display: flex; gap: 12px; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.grid2 { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 720px) { .grid2 { grid-template-columns: 1fr 1fr; } }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }

h1.page { font-size: 21px; margin: 2px 0 4px; }
.sub { color: var(--ink-2); font-size: 13.5px; margin: 0 0 16px; }
.k { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.small { font-size: 13px; color: var(--ink-2); }
.tiny { font-size: 12px; color: var(--muted); }

.btn { border: 0; border-radius: 9px; padding: 9px 15px; font-weight: 600; font-size: 14px; background: var(--accent); color: #fff; }
.btn.big { width: 100%; padding: 13px; font-size: 15px; border-radius: 11px; }
.btn.sec { background: color-mix(in srgb, var(--accent) 11%, transparent); color: var(--accent); }
.btn.quiet { background: transparent; color: var(--ink-2); border: 1px solid var(--border); }
.btn.danger { background: var(--critical); }
.btn:disabled { opacity: .5; cursor: default; }

.chip { display: inline-flex; align-items: center; gap: 5px; border-radius: 99px; padding: 2px 9px; font-size: 12px; font-weight: 600; background: color-mix(in srgb, var(--accent) 11%, transparent); color: var(--accent); }
.chip.virtual { background: color-mix(in srgb, var(--series-3) 14%, transparent); color: #0d7a53; }
.chip.warn { background: color-mix(in srgb, var(--warning) 22%, transparent); color: #8a5b00; }
.chip.crit { background: color-mix(in srgb, var(--critical) 12%, transparent); color: var(--critical); }
.chip.good { background: color-mix(in srgb, var(--good) 13%, transparent); color: var(--good-text); }
.chip.neutral { background: #efeeea; color: var(--ink-2); }

.avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; flex: none; }

input.field, select.field, textarea.field {
  width: 100%; border: 1px solid var(--baseline); border-radius: 9px; padding: 9px 11px; background: #fff; font-size: 14px;
}
input.field:focus, select.field:focus, textarea.field:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); border-color: var(--accent); }
label.lbl { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-2); margin: 10px 0 4px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.tbl th { text-align: left; color: var(--muted); font-size: 12px; font-weight: 600; padding: 6px 8px; border-bottom: 1px solid var(--grid); }
table.tbl td { padding: 7px 8px; border-bottom: 1px solid var(--grid); font-variant-numeric: tabular-nums; }

.list-item { display: flex; gap: 12px; align-items: center; padding: 11px 4px; border-bottom: 1px solid var(--grid); cursor: pointer; }
.list-item:last-child { border-bottom: 0; }
.list-item:hover { background: color-mix(in srgb, var(--accent) 4%, transparent); }

/* stat tile (dataviz contract) */
.tile { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 13px 15px; }
.tile .label { font-size: 12.5px; color: var(--ink-2); }
.tile .value { font-size: 24px; font-weight: 600; margin-top: 2px; }
.tile .delta { font-size: 12.5px; font-weight: 600; }
.tile .delta.up-good { color: var(--good-text); }
.tile .delta.down-good { color: var(--good-text); }
.tile .delta.bad { color: var(--critical); }

/* ---------- charts ---------- */
.viz { position: relative; }
.viz svg { display: block; width: 100%; height: auto; }
.viz .tooltip {
  position: absolute; pointer-events: none; background: var(--ink); color: #fff;
  border-radius: 8px; padding: 6px 9px; font-size: 12px; line-height: 1.35;
  transform: translate(-50%, calc(-100% - 10px)); white-space: nowrap; opacity: 0; transition: opacity .08s;
  z-index: 5;
}
.viz .tooltip .t-k { opacity: .7; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; font-size: 12.5px; color: var(--ink-2); }
.legend .sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }

/* ---------- workout logger ---------- */
.exercise-block { border: 1px solid var(--grid); border-radius: 11px; padding: 12px; margin-top: 10px; background: #fff; }
.exercise-block h4 { margin: 0; font-size: 14.5px; }
.set-row { display: grid; grid-template-columns: 34px 1fr 1fr 42px; gap: 8px; align-items: center; margin-top: 8px; }
.set-row .setno { color: var(--muted); font-size: 12.5px; font-weight: 700; text-align: center; }
.set-row input { text-align: center; }
.set-row .done { width: 26px; height: 26px; border-radius: 8px; border: 1.5px solid var(--baseline); background: #fff; color: transparent; font-weight: 800; margin: 0 auto; }
.set-row .done.on { background: var(--good); border-color: var(--good); color: #fff; }
.pr-flash { background: color-mix(in srgb, var(--series-4) 18%, transparent); border: 1px solid color-mix(in srgb, var(--series-4) 45%, transparent); border-radius: 10px; padding: 10px 12px; font-weight: 600; font-size: 14px; }

/* ---------- messages ---------- */
.thread { display: flex; flex-direction: column; gap: 8px; padding: 6px 0; }
.msg { max-width: 78%; border-radius: 14px; padding: 8px 12px; font-size: 14px; }
.msg.me { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg.them { align-self: flex-start; background: #efeeea; border-bottom-left-radius: 4px; }
.msg .when { display: block; font-size: 10.5px; opacity: .65; margin-top: 3px; }
.composer { display: flex; gap: 8px; margin-top: 12px; position: sticky; bottom: 74px; }
.role-trainer .composer { bottom: 8px; }

/* ---------- session cards ---------- */
.session { display: flex; gap: 12px; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--grid); }
.session:last-child { border-bottom: 0; }
.session .when { text-align: center; min-width: 52px; }
.session .when .d { font-size: 11px; color: var(--muted); font-weight: 700; text-transform: uppercase; }
.session .when .t { font-size: 15px; font-weight: 700; }

/* ---------- login ---------- */
.login-wrap { min-height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 20px; background: linear-gradient(160deg, var(--brand), #0c1c2e 70%); }
.login-card { width: 100%; max-width: 400px; background: var(--surface-1); border-radius: 18px; padding: 28px; box-shadow: 0 24px 60px rgba(0,0,0,.35); }
.login-card h1 { margin: 0 0 2px; font-size: 21px; }
.demo-pick { display: grid; gap: 10px; margin-top: 16px; }
.demo-pick button { display: flex; gap: 12px; align-items: center; text-align: left; padding: 13px; border-radius: 12px; border: 1px solid var(--border); background: #fff; }
.demo-pick button:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 5%, #fff); }

/* toast */
#toast-root { position: fixed; bottom: 84px; left: 0; right: 0; display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 60; pointer-events: none; }
.toast { background: var(--ink); color: #fff; border-radius: 10px; padding: 10px 16px; font-size: 14px; font-weight: 500; box-shadow: var(--shadow); animation: toast-in .18s ease-out; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* modal */
.modal-scrim { position: fixed; inset: 0; background: rgba(11,11,11,.45); z-index: 40; display: flex; align-items: flex-end; justify-content: center; }
.modal { background: var(--surface-1); border-radius: 18px 18px 0 0; width: 100%; max-width: 640px; max-height: 88dvh; overflow: auto; padding: 20px; }
@media (min-width: 720px) { .modal-scrim { align-items: center; } .modal { border-radius: 18px; } }

.empty { text-align: center; color: var(--muted); padding: 28px 10px; font-size: 14px; }
.mode-pill { font-size: 11px; font-weight: 700; letter-spacing: .05em; background: rgba(255,255,255,.15); border-radius: 99px; padding: 2px 8px; }