/* =============================================================================
   FitMind — Training Mode styles
   Full-screen immersive workout experience. All classes prefixed "tm-".
   Tokens only — the single allowed literal family is pure-black shadow rgba.
   ============================================================================= */

/* ── Overlay shell ────────────────────────────────────────────────────────── */
.tm-overlay{
  position:fixed;top:0;left:0;right:0;z-index:850;
  /* Extend into the ~25px paint strip below the layout viewport so the overlay
     reaches the true physical bottom (same technique as the bottom nav). */
  bottom:calc(0px - var(--bottom-strip, 0px));
  display:flex;flex-direction:column;
  background:var(--bg);
  padding-top:var(--safe-top);
  transform:translateY(6%);opacity:0;
  transition:transform 0.38s cubic-bezier(0.32,0.72,0.28,1), opacity 0.3s var(--ease);
  overscroll-behavior:contain;
  -webkit-user-select:none;user-select:none;
  touch-action:manipulation;
}
.tm-overlay.tm-in{transform:translateY(0);opacity:1}
.tm-overlay.tm-closing{transform:translateY(8%);opacity:0;pointer-events:none}

.tm-glow{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(120% 55% at 50% -12%, var(--lime-glow) 0%, transparent 62%),
    radial-gradient(90% 40% at 85% 110%, var(--teal-dim) 0%, transparent 55%);
  opacity:0.8;
}

/* ── Header (glass bar) ───────────────────────────────────────────────────── */
.tm-header{
  position:relative;z-index:3;
  display:flex;align-items:center;gap:var(--space-sm);
  padding:8px var(--space-md);
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
  border-bottom:1px solid var(--glass-border);
}
.tm-icon-btn{
  flex:0 0 auto;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-full);
  background:var(--fill-1);border:1px solid var(--border);
  color:var(--text-secondary);
  transition:background 0.2s var(--ease), color 0.2s var(--ease), transform 0.15s var(--ease);
}
.tm-icon-btn:active{background:var(--fill-3);color:var(--text);transform:scale(0.94)}
.tm-icon-btn svg{width:20px;height:20px}
.tm-header-center{flex:1;min-width:0;text-align:center}
.tm-session-name{
  font-family:var(--font-display);
  font-size:0.62rem;font-weight:700;
  letter-spacing:1.8px;text-transform:uppercase;
  color:var(--text-secondary);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tm-elapsed{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:1.2rem;font-weight:600;
  color:var(--lime);letter-spacing:0.5px;line-height:1.2;
}

/* ── Segmented progress ───────────────────────────────────────────────────── */
.tm-progress-wrap{
  position:relative;z-index:2;
  display:flex;align-items:center;gap:var(--space-sm);
  padding:12px var(--space-md) 10px;
  -webkit-touch-callout:none;
}
.tm-progress{display:flex;gap:4px;flex:1;min-width:0}
.tm-seg{
  flex:1;height:4px;min-width:6px;
  border-radius:var(--radius-full);
  background:var(--fill-2);
  position:relative;overflow:hidden;
}
.tm-seg-current{background:var(--fill-4)}
.tm-seg-fill{
  position:absolute;left:0;top:0;bottom:0;width:0;
  background:var(--lime-vivid);border-radius:inherit;
  transition:width 0.3s var(--ease);
}
.tm-seg-current .tm-seg-fill{animation:tmSegPulse 1.6s ease-in-out infinite}
.tm-seg-done .tm-seg-fill{animation:none}
@keyframes tmSegPulse{0%,100%{opacity:1}50%{opacity:0.45}}
.tm-progress-label{
  flex:0 0 auto;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:0.68rem;color:var(--text-muted);
}

/* ── Stage viewport ───────────────────────────────────────────────────────── */
.tm-viewport{
  flex:1;min-height:0;position:relative;z-index:1;
  overflow-y:auto;overflow-x:hidden;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
  touch-action:pan-y;
}
.tm-stage{
  max-width:480px;margin:0 auto;
  padding:var(--space-lg) var(--space-md) var(--space-2xl);
  will-change:transform;
}
.tm-empty{
  padding:var(--space-2xl) var(--space-md);
  text-align:center;color:var(--text-muted);font-size:0.85rem;
}

/* ── Exercise stage ───────────────────────────────────────────────────────── */
.tm-ex-kicker{
  font-size:0.6rem;font-weight:700;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:1.4px;
  margin-bottom:6px;
}
.tm-ex-name{
  font-family:var(--font-display);
  font-size:1.65rem;font-weight:800;letter-spacing:-0.02em;
  color:var(--text);line-height:1.12;
  margin-bottom:var(--space-sm);
  overflow-wrap:break-word;
}
.tm-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:var(--space-sm)}
.tm-chip{
  display:inline-flex;align-items:center;gap:4px;
  padding:5px 10px;border-radius:var(--radius-full);
  background:var(--fill-1);border:1px solid var(--border);
  font-size:0.68rem;font-weight:600;color:var(--text-secondary);
  letter-spacing:0.3px;white-space:nowrap;
}
.tm-chip-target{
  font-family:var(--font-mono);
  background:var(--lime-dim);border-color:transparent;color:var(--lime);
}
.tm-chip-int{background:var(--amber-dim);border-color:transparent;color:var(--amber)}
.tm-chip-uni{
  background:var(--blue-dim);border-color:transparent;color:var(--blue);
  font-size:0.55rem;font-weight:700;letter-spacing:0.6px;text-transform:uppercase;
  padding:3px 8px;vertical-align:middle;
}
/* Next-weight suggestion ("Last: 80 kg × 8 · Try 82.5 kg") */
.tm-suggest{
  display:flex;align-items:center;gap:8px;
  margin:2px 0 var(--space-sm);padding:8px 11px;
  border-radius:10px;background:var(--fill-1);border:1px solid var(--border);
  font-size:0.75rem;color:var(--text-secondary);line-height:1.35;
}
.tm-suggest svg{width:15px;height:15px;flex:0 0 auto;color:var(--text-muted)}
.tm-suggest b{color:var(--text);font-weight:600;font-family:var(--font-mono)}
.tm-suggest.up{background:var(--lime-dim);border-color:transparent}
.tm-suggest.up svg{color:var(--lime)}
.tm-suggest.up b{color:var(--lime)}

.tm-muscles{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:var(--space-sm)}
.tm-muscle-chip{
  padding:3px 8px;border-radius:var(--radius-full);
  background:var(--fill-faint);border:1px solid var(--border);
  font-size:0.6rem;font-weight:600;color:var(--text-muted);
  letter-spacing:0.6px;text-transform:uppercase;
}
.tm-tip{
  display:block;width:100%;max-width:100%;
  text-align:left;padding:0;margin:2px 0 var(--space-md);
  font-size:0.78rem;font-style:italic;line-height:1.5;
  color:var(--ink-3);
}
.tm-tip.collapsed{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Slot for a rest timer carried across exercise navigation */
.tm-stage-rest-slot:empty,.tm-rest-slot:empty{display:none}
.tm-stage-rest-slot{margin-bottom:var(--space-sm)}
.tm-rest-slot{margin:2px 0 6px}

/* ── Set list ─────────────────────────────────────────────────────────────── */
.tm-sets{margin-top:var(--space-xs)}
.tm-set{
  position:relative;
  display:grid;grid-template-columns:34px minmax(0,1fr) 56px;
  gap:var(--space-sm);align-items:center;
  min-height:64px;padding:8px 6px;
  border-bottom:1px solid var(--fill-faint);
  border-radius:var(--radius-md);
  transition:background 0.25s var(--ease);
}
.tm-set.done{background:var(--lime-glow);border-bottom-color:transparent}
.tm-set-num{
  font-family:var(--font-mono);font-size:1.05rem;font-weight:700;
  color:var(--text-muted);text-align:center;
}
.tm-set.done .tm-set-num{color:var(--lime)}
.tm-set-main{min-width:0;display:flex;flex-direction:column;gap:4px}
.tm-set-ref{
  font-size:0.68rem;color:var(--text-muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tm-set-vals{display:flex;gap:var(--space-sm)}
.tm-val-btn{
  display:flex;align-items:baseline;gap:5px;
  min-height:44px;min-width:44px;padding:6px 12px;
  border-radius:var(--radius-md);
  background:var(--fill-1);border:1px solid var(--border);
  transition:background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.15s var(--ease);
}
.tm-val-btn:active{background:var(--fill-3);border-color:var(--border-light);transform:scale(0.97)}
.tm-val{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:1.2rem;font-weight:700;color:var(--text);line-height:1;
}
.tm-unit{
  font-size:0.6rem;font-weight:600;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:0.5px;
}
.tm-val-btn.tm-ghost .tm-val{color:var(--ink-3);font-weight:500}

.tm-done-btn{
  width:56px;height:56px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-full);
  background:var(--fill-1);border:1.5px solid var(--border-light);
  color:var(--ink-4);
  transition:background 0.2s var(--ease), color 0.2s var(--ease),
             border-color 0.2s var(--ease), transform 0.18s var(--ease);
}
.tm-done-btn svg{width:26px;height:26px}
.tm-done-btn:active{transform:scale(0.9)}
.tm-done-btn.done{
  background:var(--lime-vivid);border-color:transparent;color:var(--bg);
  animation:tmSpring 0.45s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes tmSpring{
  0%{transform:scale(0.78)}
  55%{transform:scale(1.12)}
  100%{transform:scale(1)}
}

/* Hidden picker inputs */
.tm-hi{
  position:absolute;left:-9999px;top:0;width:1px;height:1px;
  opacity:0;pointer-events:none;
}

/* ── Footer nav + machine busy ────────────────────────────────────────────── */
.tm-footer{
  position:relative;z-index:3;
  display:flex;align-items:center;gap:var(--space-sm);
  padding:10px var(--space-md) calc(10px + var(--safe-bottom));
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
  border-top:1px solid var(--glass-border);
}
.tm-nav-btn{
  flex:0 0 auto;width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-full);
  background:var(--fill-1);border:1px solid var(--border);
  color:var(--text-secondary);
  transition:background 0.2s var(--ease), color 0.2s var(--ease), transform 0.15s var(--ease);
}
.tm-nav-btn:active{background:var(--fill-3);color:var(--text);transform:scale(0.94)}
.tm-nav-btn svg{width:20px;height:20px}
.tm-busy-btn{
  flex:1;min-width:0;min-height:48px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:0 var(--space-md);
  border-radius:var(--radius-full);
  background:var(--fill-1);border:1px solid var(--border);
  color:var(--text-secondary);
  font-size:0.78rem;font-weight:600;letter-spacing:0.2px;
  transition:background 0.2s var(--ease), color 0.2s var(--ease), transform 0.15s var(--ease), opacity 0.2s var(--ease);
}
.tm-busy-btn:active{background:var(--fill-3);color:var(--text);transform:scale(0.98)}
.tm-busy-btn svg{width:16px;height:16px;flex:0 0 auto}
.tm-busy-btn span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tm-overlay.tm-finishing .tm-busy-btn{opacity:0.35;pointer-events:none}

/* ── Celebration ──────────────────────────────────────────────────────────── */
.tm-celebrate{
  position:fixed;inset:0;z-index:6;
  display:flex;align-items:center;justify-content:center;
  pointer-events:none;
}
.tm-celebrate-ring{
  width:96px;height:96px;border-radius:var(--radius-full);
  display:flex;align-items:center;justify-content:center;
  background:var(--lime-vivid);color:var(--bg);
  box-shadow:0 12px 40px rgba(0,0,0,0.35), 0 0 0 14px var(--lime-dim);
  animation:tmCelebrate 0.6s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
.tm-celebrate-ring svg{width:44px;height:44px}
@keyframes tmCelebrate{
  0%{transform:scale(0.3);opacity:0}
  40%{transform:scale(1.08);opacity:1}
  78%{transform:scale(1);opacity:1}
  100%{transform:scale(1);opacity:0}
}

/* ── Closing state ────────────────────────────────────────────────────────── */
.tm-finish{
  display:flex;flex-direction:column;align-items:center;
  text-align:center;padding-top:var(--space-2xl);
}
.tm-finish-badge{
  width:84px;height:84px;border-radius:var(--radius-full);
  display:flex;align-items:center;justify-content:center;
  background:var(--lime-vivid);color:var(--bg);
  box-shadow:0 14px 44px rgba(0,0,0,0.3), 0 0 0 12px var(--lime-dim);
  margin-bottom:var(--space-lg);
}
.tm-finish-badge svg{width:38px;height:38px}
.tm-finish-title{
  font-family:var(--font-display);
  font-size:1.45rem;font-weight:800;letter-spacing:-0.02em;
  color:var(--text);margin-bottom:6px;
}
.tm-finish-sub{font-size:0.85rem;color:var(--text-secondary);margin-bottom:var(--space-lg)}
.tm-finish-stats{
  display:flex;gap:var(--space-sm);
  width:100%;max-width:340px;margin-bottom:var(--space-xl);
}
.tm-finish-stat{
  flex:1;display:flex;flex-direction:column;gap:6px;
  padding:var(--space-md);
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);
}
.tm-finish-val{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:1.5rem;font-weight:600;color:var(--text);line-height:1;
}
.tm-finish-key{
  font-size:0.62rem;font-weight:600;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:1px;
}
.tm-primary-btn{
  width:100%;max-width:340px;min-height:54px;
  border-radius:var(--radius-full);
  background:var(--lime-vivid);color:var(--bg);
  font-size:0.95rem;font-weight:700;letter-spacing:0.2px;
  box-shadow:0 10px 30px rgba(0,0,0,0.25);
  transition:transform 0.15s var(--ease), opacity 0.2s var(--ease);
  margin-bottom:var(--space-sm);
}
.tm-primary-btn:active{transform:scale(0.97)}
.tm-quiet-btn{
  width:100%;max-width:340px;min-height:48px;
  border-radius:var(--radius-full);
  background:var(--fill-1);border:1px solid var(--border);
  color:var(--text-secondary);
  font-size:0.85rem;font-weight:600;
  transition:background 0.2s var(--ease), color 0.2s var(--ease), transform 0.15s var(--ease);
}
.tm-quiet-btn:active{background:var(--fill-3);color:var(--text);transform:scale(0.98)}

/* ── Bottom sheets inside the overlay ─────────────────────────────────────── */
.tm-scrim{
  position:absolute;inset:0;z-index:10;
  background:var(--scrim);
  opacity:0;transition:opacity 0.28s var(--ease);
}
.tm-scrim.open{opacity:1}
.tm-sheet{
  position:absolute;left:0;right:0;bottom:0;z-index:11;
  max-height:72%;overflow-y:auto;
  -webkit-overflow-scrolling:touch;overscroll-behavior:contain;
  background:var(--glass-bg-strong);
  -webkit-backdrop-filter:blur(30px);backdrop-filter:blur(30px);
  border-top:1px solid var(--glass-border);
  border-radius:var(--radius-xl) var(--radius-xl) 0 0;
  padding:10px var(--space-md) calc(var(--space-md) + var(--safe-bottom));
  transform:translateY(100%);
  transition:transform 0.32s cubic-bezier(0.32,0.72,0.28,1);
  box-shadow:0 -14px 44px rgba(0,0,0,0.35);
}
.tm-sheet.open{transform:translateY(0)}
.tm-sheet-grip{
  width:36px;height:4px;border-radius:var(--radius-full);
  background:var(--fill-4);margin:2px auto 14px;
}
.tm-sheet-title{
  font-family:var(--font-display);
  font-size:1rem;font-weight:700;color:var(--text);
  margin-bottom:4px;
}
.tm-sheet-hint{font-size:0.72rem;color:var(--text-muted);margin-bottom:var(--space-md)}
.tm-sheet-item{
  display:flex;align-items:center;gap:12px;
  width:100%;min-height:52px;padding:0 var(--space-md);
  border-radius:var(--radius-md);
  background:var(--fill-1);
  font-size:0.9rem;font-weight:600;color:var(--text);
  text-align:left;margin-bottom:6px;
  transition:background 0.2s var(--ease), transform 0.15s var(--ease);
}
.tm-sheet-item:active{background:var(--fill-3);transform:scale(0.985)}
.tm-sheet-item svg{width:18px;height:18px;flex:0 0 auto;color:var(--lime)}
.tm-sheet-item.tm-danger{color:var(--red)}
.tm-sheet-item.tm-danger svg{color:var(--red)}

/* Reorder rows */
.tm-reorder-row{
  display:flex;align-items:center;gap:10px;
  min-height:56px;padding:6px 6px 6px 10px;
  border-radius:var(--radius-md);
  border:1px solid transparent;margin-bottom:4px;
  transition:background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.tm-reorder-row.current{background:var(--lime-glow);border-color:var(--lime-dim)}
.tm-reorder-row.complete .tm-reorder-name{color:var(--text-muted)}
.tm-reorder-status{
  width:38px;flex:0 0 auto;text-align:center;
  font-size:0.68rem;color:var(--text-secondary);
  display:flex;align-items:center;justify-content:center;
}
.tm-reorder-status svg{width:18px;height:18px;color:var(--lime)}
.tm-reorder-name{
  flex:1;min-width:0;
  font-size:0.85rem;font-weight:600;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tm-reorder-arrows{display:flex;gap:4px;flex:0 0 auto}
.tm-arrow{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);
  background:var(--fill-1);border:1px solid var(--border);
  color:var(--text-secondary);
  transition:background 0.2s var(--ease), opacity 0.2s var(--ease), transform 0.15s var(--ease);
}
.tm-arrow:active{background:var(--fill-3);transform:scale(0.94)}
.tm-arrow:disabled{opacity:0.3;pointer-events:none}
.tm-arrow svg{width:18px;height:18px}

/* ── Stacking fixes while Training Mode is open ───────────────────────────────
   PickerSheet (z 300) and the floating rest timer render on <body>; lift them
   above the overlay (z 850) only while Training Mode is active. */
body.tm-open .picker-backdrop{z-index:930}
body.tm-open .picker-sheet{z-index:931}
body.tm-open .rest-inline-floating{z-index:920}

/* ── Reduced motion ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce){
  .tm-overlay,.tm-sheet,.tm-scrim,.tm-seg-fill,
  .tm-icon-btn,.tm-nav-btn,.tm-busy-btn,.tm-val-btn,
  .tm-done-btn,.tm-set,.tm-arrow,.tm-sheet-item,
  .tm-primary-btn,.tm-quiet-btn,.tm-reorder-row{
    transition:none !important;
  }
  .tm-overlay{transform:none;opacity:1}
  .tm-overlay.tm-closing{opacity:0}
  .tm-seg-current .tm-seg-fill,
  .tm-done-btn.done,
  .tm-celebrate-ring{
    animation:none !important;
  }
  .tm-celebrate{display:none}
}