/* Dual Performance — coach prescription builder.
 *
 * Built entirely from the dashboard's own custom properties (--surface,
 * --surface2, --border, --text, --muted, --dim, --mono …) and NO hardcoded
 * colours, so it follows the light/dark theme switch automatically the way
 * .po-modal does. Structure, radii, micro-label typography and the amber
 * primary all mirror the existing modal system deliberately — this should read
 * as another dashboard modal, not a bolted-on tool. */

/* ── Overlay ──
   Centred, like .po-overlay. On mobile it becomes a full-height sheet. */
.rx-overlay{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:9100;display:flex;align-items:center;justify-content:center;padding:20px}
.rx-overlay.hidden{display:none}
.rx-panel{background:var(--surface);border:1px solid var(--border-mid);border-radius:12px;width:100%;max-width:860px;max-height:min(88vh,900px);display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 70px rgba(0,0,0,.5)}

/* ── Header — mirrors .po-modal-head ── */
.rx-head{background:var(--surface2);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--border);flex-shrink:0}
.rx-head-main{display:flex;align-items:center;gap:11px;min-width:0}
.rx-coach-pill{display:inline-flex;align-items:center;gap:5px;background:linear-gradient(90deg,#dc2626,#991b1b);color:#fff;font-family:var(--mono);font-size:8px;font-weight:800;text-transform:uppercase;letter-spacing:.12em;padding:4px 8px;border-radius:4px;white-space:nowrap;flex-shrink:0}
.rx-title-block{min-width:0}
.rx-title{font-family:var(--mono);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rx-sub{font-family:var(--mono);font-size:9px;color:var(--dim);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rx-head-actions{display:flex;align-items:center;gap:7px;flex-shrink:0}

/* ── Buttons — .po-btn language, amber primary like .po-btn.save ── */
.rx-btn{background:var(--surface);border:1px solid var(--border-mid);color:var(--text);font-family:var(--mono);font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:7px 12px;border-radius:6px;cursor:pointer;transition:all .15s;white-space:nowrap}
.rx-btn:hover{border-color:var(--amber);color:var(--amber-text)}
.rx-btn:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.rx-btn:disabled{opacity:.4;cursor:not-allowed}
.rx-btn-primary{background:#f59e0b;border-color:#f59e0b;color:#000}
.rx-btn-primary:hover{background:#fbbf24;border-color:#fbbf24;color:#000}
.rx-btn-quiet{background:transparent;border-color:transparent;color:var(--dim)}
.rx-btn-quiet:hover{color:var(--text);border-color:var(--border-mid)}
.rx-btn-tiny{padding:5px 9px;font-size:8px}
.rx-x{background:none;border:none;color:var(--dim);font-size:20px;line-height:1;cursor:pointer;padding:0 4px}
.rx-x:hover{color:var(--text)}

.rx-save-state{font-family:var(--mono);font-size:8px;text-transform:uppercase;letter-spacing:.1em;color:var(--dim)}
.rx-save-state.is-saving{color:var(--amber-text)}

/* ── Edit scope (§18) ── */
.rx-scopebar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:9px 16px;border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0}
.rx-scope-label{font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--dim)}
.rx-scope-options{display:flex;gap:4px}
.rx-scope-opt{background:transparent;border:1px solid var(--border-mid);color:var(--muted);font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;padding:6px 11px;border-radius:5px;cursor:pointer;transition:all .15s}
.rx-scope-opt:hover{border-color:var(--amber);color:var(--amber-text)}
.rx-scope-opt.is-active{background:var(--amber-bg);border-color:var(--amber-border);color:var(--amber-text)}
.rx-scope-opt:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.rx-scope-hint{font-size:11px;color:var(--dim)}

/* ── Body ── */
.rx-body{overflow-y:auto;padding:16px;flex:1;-webkit-overflow-scrolling:touch;background:var(--surface)}
.rx-loading,.rx-empty,.rx-error{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--dim);text-align:center;padding:34px 12px;display:flex;flex-direction:column;align-items:center;gap:14px}
.rx-error{color:var(--red-text);text-transform:none;letter-spacing:0;font-size:12px}

/* ── Taking a session off its shared split ── */
.rx-adopt{max-width:520px;margin:14px auto;text-align:center;background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:24px 22px}
.rx-adopt-title{font-family:var(--mono);font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;margin-bottom:12px;color:var(--text)}
.rx-adopt-body{font-size:12.5px;line-height:1.6;color:var(--muted);margin-bottom:13px}
.rx-adopt-body strong{color:var(--text)}

/* ── Exercise rows ── */
.rx-ex-list{display:flex;flex-direction:column;gap:8px}
.rx-ex{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:11px 12px}
.rx-ex-head{display:flex;align-items:center;gap:7px;margin-bottom:9px}
.rx-group{font-family:var(--mono);font-size:9px;font-weight:800;color:var(--amber-text);background:var(--amber-bg);border:1px solid var(--amber-border);border-radius:4px;padding:4px 7px;flex-shrink:0}
/* The name is chosen from the library, never typed — so it reads as a field
   but behaves as a button. */
.rx-ex-name{flex:1;min-width:0;font-family:var(--mono);font-size:12px;font-weight:700;cursor:pointer}
.rx-ex-name:hover{border-color:var(--amber);color:var(--amber-text)}
/* Same affordance on the dashboard's own New Split editor, whose exercise field
   this module also hooks. */
#pw-ex-list input[data-f="exercise"]{cursor:pointer}
#pw-ex-list input[data-f="exercise"]:hover{border-color:var(--amber)}
.rx-ex-tools{display:flex;gap:3px;flex-shrink:0}
.rx-icon{background:none;border:1px solid var(--border-mid);border-radius:6px;color:var(--dim);width:29px;height:29px;cursor:pointer;font-size:12px;line-height:1;display:flex;align-items:center;justify-content:center;transition:all .15s}
.rx-icon:hover{color:var(--text);border-color:var(--amber)}
.rx-icon:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.rx-icon-danger:hover{color:var(--red-text);border-color:var(--red-text)}

.rx-ex-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(74px,1fr));gap:6px}
.rx-f{display:flex;flex-direction:column;gap:3px}
.rx-f>span{font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--dim)}
/* Matches .po-input, including the amber focus ring. */
.rx-input{width:100%;background:var(--control-bg,var(--bg));border:1px solid var(--border-mid);border-radius:6px;color:var(--control-text,var(--text));font-family:var(--mono);font-size:12px;padding:7px 10px;box-sizing:border-box;outline:none;transition:border-color .15s;min-height:34px}
.rx-input:focus{border-color:var(--amber)}
.rx-input::placeholder{color:var(--control-placeholder,var(--dim));opacity:1}
.rx-num{text-align:center}
.rx-ta{resize:vertical;min-height:42px;line-height:1.5;font-family:var(--sans);font-size:12.5px}

.rx-adv{margin-top:10px;border-top:1px solid var(--border);padding-top:8px}
.rx-adv>summary{font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--dim);cursor:pointer;padding:3px 0}
.rx-adv>summary:hover{color:var(--muted)}
.rx-adv>summary:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.rx-lbl{display:block;font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;margin:10px 0 4px;color:var(--dim)}
.rx-lbl>span{text-transform:none;letter-spacing:0;font-size:9px;opacity:.8;margin-left:6px;font-weight:400}
/* §32: the two note types must never be mistakable for one another. */
.rx-lbl-athlete{color:var(--green-text)}
.rx-lbl-coach{color:var(--coach-text)}
.rx-ta-coach{border-color:var(--coach-border);background:var(--coach-bg)}

.rx-add{margin-top:12px;width:100%}

/* ── Run step builder ── */
.rx-steps{display:flex;flex-direction:column;gap:7px}
.rx-step{display:flex;align-items:flex-end;gap:7px;flex-wrap:wrap;background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:10px 11px}
.rx-step.is-child{margin-left:20px;border-left:2px solid var(--amber-border)}
.rx-step-type{font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--amber-text);min-width:70px}
.rx-step .rx-f{min-width:64px}
.rx-step-children{display:flex;flex-direction:column;gap:7px;margin:7px 0}
.rx-step-add{display:flex;gap:5px;flex-wrap:wrap;margin-top:11px}

/* ── Footer — mirrors .po-modal-foot ── */
.rx-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 16px;border-top:1px solid var(--border);background:var(--surface2);flex-shrink:0;flex-wrap:wrap}
.rx-badge{font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.09em;padding:6px 10px;border-radius:5px;border:1px solid}
.rx-badge.is-draft{background:var(--amber-bg);border-color:var(--amber-border);color:var(--amber-text)}
.rx-badge.is-live{background:var(--green-bg);border-color:var(--green-border);color:var(--green-text)}

/* ── Athlete preview (§31) ──
   Reads like the athlete's app, not a coach tool with the buttons hidden. */
.rx-overlay.is-preview .rx-panel{border-color:var(--green-border)}
.rxp-head{border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:14px}
.rxp-day{font-family:var(--mono);font-size:9px;text-transform:uppercase;letter-spacing:.1em;color:var(--dim)}
.rxp-title{font-size:20px;font-weight:800;margin-top:5px;color:var(--text)}
.rxp-meta{font-family:var(--mono);font-size:10px;color:var(--muted);margin-top:4px}
.rxp-list,.rxp-steps{display:flex;flex-direction:column;gap:8px}
.rxp-ex,.rxp-step{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:12px 13px}
.rxp-ex-name{font-size:13.5px;font-weight:700;display:flex;align-items:center;gap:8px;color:var(--text)}
.rxp-group{font-family:var(--mono);font-size:9px;font-weight:800;color:var(--amber-text)}
.rxp-ex-rx{font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:5px}
.rxp-ex-note{font-size:12px;color:var(--muted);margin-top:7px;line-height:1.5;border-left:2px solid var(--border-mid);padding-left:9px}
.rxp-step-type{font-size:13px;font-weight:700;color:var(--text)}
.rxp-children{margin-top:7px;padding-left:11px;border-left:2px solid var(--amber-border);display:flex;flex-direction:column;gap:5px}
.rxp-child{font-family:var(--mono);font-size:11px;color:var(--muted)}
.rxp-empty{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--dim);padding:26px;text-align:center}

/* ── Exercise picker (§15/§16) ──
   Browse by muscle group. Typing is optional, not the way in. */
.rx-picker{position:fixed;inset:0;z-index:9200;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;padding:20px}
.rx-picker.hidden{display:none}
.rx-picker-card{background:var(--surface);border:1px solid var(--border-mid);border-radius:12px;width:100%;max-width:620px;max-height:min(80vh,720px);display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 70px rgba(0,0,0,.5)}
.rx-picker-head{background:var(--surface2);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.rx-picker-title{font-family:var(--mono);font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--text)}
.rx-picker-search{border-radius:0;border-left:none;border-right:none;border-top:none;min-height:44px;font-size:12px;padding:12px 16px}
.rx-picker-panes{display:grid;grid-template-columns:168px 1fr;flex:1;min-height:0}
.rx-picker-cats{border-right:1px solid var(--border);overflow-y:auto;background:var(--bg);padding:6px}
.rx-cat{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;background:transparent;border:1px solid transparent;border-radius:6px;color:var(--muted);font-family:var(--mono);font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:9px 10px;cursor:pointer;text-align:left;transition:all .12s;min-height:36px}
.rx-cat:hover{background:var(--surface2);color:var(--text)}
.rx-cat.is-active{background:var(--amber-bg);border-color:var(--amber-border);color:var(--amber-text)}
.rx-cat:focus-visible{outline:2px solid var(--amber);outline-offset:-2px}
.rx-cat-n{font-size:8px;opacity:.6;font-weight:400}
.rx-picker-results{overflow-y:auto}
.rx-picker-group{font-family:var(--mono);font-size:8px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--dim);padding:10px 14px 4px}
.rx-picker-row{display:flex;flex-direction:column;align-items:flex-start;gap:3px;width:100%;background:transparent;border:none;border-bottom:1px solid var(--border);color:var(--text);padding:11px 14px;cursor:pointer;text-align:left;min-height:44px;transition:background .12s}
.rx-picker-row:hover,.rx-picker-row:focus-visible{background:var(--amber-bg);outline:none}
.rx-picker-name{font-size:13px}
.rx-picker-meta{font-family:var(--mono);font-size:8.5px;color:var(--dim);text-transform:uppercase;letter-spacing:.07em}

/* ── Save as split (§39) ── */
.rx-saveas-card{max-width:420px;max-height:none}
.rx-saveas-body{padding:16px}
.rx-saveas-body .rx-lbl:first-child{margin-top:0}
.rx-saveas-hint{font-size:11.5px;line-height:1.5;color:var(--muted);margin-top:12px}
/* A shared split reaches every athlete — say so in the colour that means care. */
.rx-saveas-hint.is-broad{color:var(--amber-text)}

/* ── Toast ── */
.rx-toast{position:absolute;left:50%;bottom:70px;transform:translate(-50%,10px);background:var(--surface2);border:1px solid var(--border-mid);color:var(--text);font-size:12px;padding:10px 15px;border-radius:8px;opacity:0;pointer-events:none;transition:opacity .18s,transform .18s;max-width:min(440px,88%);text-align:center;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.rx-toast.is-visible{opacity:1;transform:translate(-50%,0)}
.rx-toast.is-ok{border-color:var(--green-border)}
.rx-toast.is-warn{border-color:var(--amber-border)}
.rx-toast.is-bad{border-color:var(--red-border)}

/* ── Entry point injected into the existing Plan Session modal ── */
.rx-open-btn{flex:1;padding:8px;border-radius:6px;font-family:var(--mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;cursor:pointer;border:1px solid var(--amber-border);background:var(--amber-bg);color:var(--amber-text);transition:all .15s}
.rx-open-btn:hover{background:#f59e0b;border-color:#f59e0b;color:#000}
.rx-open-btn:disabled{opacity:.4;cursor:not-allowed}

/* ── Mobile (§51) ──
   Full-height sheet, larger targets, single-column panes. Reordering stays on
   the explicit up/down buttons rather than drag, which is why they exist. */
@media(max-width:760px){
  .rx-overlay,.rx-picker{padding:0;align-items:flex-end}
  .rx-panel,.rx-picker-card{max-width:none;max-height:100vh;height:100vh;border-radius:0;border:none}
  .rx-head{padding:11px 13px;flex-wrap:wrap}
  .rx-head-actions{width:100%;justify-content:space-between;margin-top:4px}
  .rx-body{padding:13px 13px 22px}
  .rx-ex-grid{grid-template-columns:repeat(3,1fr)}
  .rx-input{min-height:42px;font-size:16px} /* 16px stops iOS zooming on focus */
  .rx-icon{width:36px;height:36px}
  .rx-scopebar{padding:9px 13px}
  .rx-scope-options{width:100%}
  .rx-scope-opt{flex:1;text-align:center;padding:9px 4px}
  .rx-step{flex-direction:column;align-items:stretch}
  .rx-step .rx-f{min-width:0}
  /* Categories become a horizontal strip so the exercise list keeps the width. */
  .rx-picker-panes{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .rx-picker-cats{display:flex;gap:5px;overflow-x:auto;border-right:none;border-bottom:1px solid var(--border);padding:8px}
  .rx-cat{width:auto;flex:0 0 auto;white-space:nowrap}
  .rx-picker-row{min-height:50px}
}

@media(prefers-reduced-motion:reduce){
  .rx-toast,.rx-btn,.rx-icon,.rx-cat,.rx-picker-row{transition:none}
}