/* The Shed booking flow — Operate surface.
   Mobile-first stepped flow: service -> date & time -> details -> done.
   Brass accent reserved for selection, primary actions and state. */
.bk-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:1.5rem;align-items:start;margin-top:1.5rem}
.bk-main{min-width:0}
.bk-rail{position:sticky;top:88px}

/* Stepper */
.bk-steps{list-style:none;display:flex;margin:1.75rem 0 0;padding:0}
.bk-steps li{flex:1;display:flex;flex-direction:column;align-items:center;gap:.45rem;
  font-size:.78rem;font-weight:600;color:var(--bone-dim);position:relative;text-align:center;min-width:0}
.bk-steps li::after{content:"";position:absolute;top:17px;left:calc(-50% + 22px);right:calc(50% + 22px);
  height:2px;background:var(--bone-faint)}
.bk-steps li:first-child::after{display:none}
.bk-steps li.done::after{background:var(--brass)}
.bk-dot{width:36px;height:36px;border-radius:50%;border:2px solid var(--bone-faint);
  display:grid;place-items:center;background:var(--surface);color:var(--bone-dim);
  font-weight:700;font-size:.95rem;position:relative;z-index:1;transition:border-color .2s,background .2s,color .2s}
.bk-steps li.done .bk-dot{border-color:var(--brass);color:var(--brass)}
.bk-steps li.done .bk-dot svg{display:block}
.bk-steps li.done .bk-dot span{display:none}
.bk-dot svg{display:none;width:16px;height:16px}
.bk-steps li.now{color:var(--bone)}
.bk-steps li.now .bk-dot{border-color:var(--brass);background:var(--brass);color:var(--brass-ink)}
.bk-steps button.step-jump{background:none;border:0;color:inherit;font:inherit;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:.45rem;padding:0}
.bk-steps li.locked{opacity:.55}
.bk-steps li.locked .step-jump{cursor:default}

/* Panels */
.bk-panel{margin-top:1.5rem}
.bk-panel[hidden]{display:none}
.bk-panel.enter{animation:panelIn .22s cubic-bezier(.2,.7,.2,1)}
@keyframes panelIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.bk-panel h2{font-size:1.35rem;margin-bottom:.25rem}
.bk-sub{color:var(--bone-dim);margin:0 0 1.1rem}
.bk-back{background:none;border:0;color:var(--bone-dim);font-weight:600;font-size:.95rem;
  display:inline-flex;align-items:center;gap:.35rem;cursor:pointer;padding:.5rem 0;margin-bottom:.25rem}
.bk-back:hover{color:var(--brass)}
.bk-back svg{width:16px;height:16px}

/* Service list */
.bk-services{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.bk-service{display:flex;align-items:center;gap:.9rem;width:100%;text-align:left;
  background:var(--surface);border:1px solid var(--bone-faint);border-radius:14px;
  padding:.95rem 1.05rem;cursor:pointer;color:var(--bone);font-size:1rem;
  transition:border-color .18s ease,background .18s ease}
.bk-service:hover{border-color:rgba(200,162,75,.55)}
.bk-service[aria-checked="true"]{border-color:var(--brass);background:rgba(200,162,75,.08)}
.bk-radio{width:22px;height:22px;flex:none;border-radius:50%;border:2px solid var(--bone-faint);
  display:grid;place-items:center;transition:border-color .18s ease}
.bk-radio::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--brass);
  transform:scale(0);transition:transform .18s ease}
.bk-service[aria-checked="true"] .bk-radio{border-color:var(--brass)}
.bk-service[aria-checked="true"] .bk-radio::after{transform:scale(1)}
.bk-service .n{font-weight:700;line-height:1.25}
.bk-service .m{display:block;color:var(--bone-dim);font-size:.88rem;font-weight:400;margin-top:.15rem}
.bk-service .p{margin-left:auto;flex:none;font-family:var(--font-display);font-size:1.35rem;
  color:var(--brass);font-variant-numeric:tabular-nums}

/* Date strip */
.bk-dates{display:flex;gap:.55rem;overflow-x:auto;margin:0 -.1rem;padding:.25rem .1rem 1rem;
  scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:var(--brass) transparent}
.bk-dates::-webkit-scrollbar{height:6px}
.bk-dates::-webkit-scrollbar-thumb{background:rgba(200,162,75,.5);border-radius:3px}
.bk-day{flex:0 0 66px;scroll-snap-align:start;border:1px solid var(--bone-faint);
  background:var(--surface);border-radius:12px;padding:.6rem 0 .65rem;color:var(--bone-dim);
  cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}
.bk-day:hover{border-color:rgba(200,162,75,.55)}
.bk-day .dow{display:block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em}
.bk-day .num{display:block;font-family:var(--font-display);font-size:1.4rem;color:var(--bone);line-height:1.25}
.bk-day .mon{display:block;font-size:.72rem}
.bk-day[aria-pressed="true"]{background:var(--brass);border-color:var(--brass);color:var(--brass-ink)}
.bk-day[aria-pressed="true"] .num,.bk-day[aria-pressed="true"] .dow,.bk-day[aria-pressed="true"] .mon{color:var(--brass-ink)}

/* Time slots */
.bk-slots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.6rem;margin-top:.25rem}
.bk-slot{min-height:54px;border:1px solid var(--bone-faint);background:var(--surface);
  border-radius:12px;color:var(--bone);font-weight:700;font-size:1rem;
  font-variant-numeric:tabular-nums;cursor:pointer;
  transition:border-color .15s ease,background .15s ease,color .15s ease}
.bk-slot:hover{border-color:rgba(200,162,75,.55)}
.bk-slot[aria-pressed="true"]{background:var(--brass);border-color:var(--brass);color:var(--brass-ink)}
.bk-slot:focus-visible,.bk-day:focus-visible,.bk-service:focus-visible{outline:3px solid var(--brass);outline-offset:2px}
.bk-sk{height:54px;border-radius:12px;
  background:linear-gradient(100deg,var(--surface) 40%,var(--surface-2) 50%,var(--surface) 60%);
  background-size:200% 100%;animation:shimmer 1.2s linear infinite}
@keyframes shimmer{to{background-position:-200% 0}}

/* Status / empty / error */
.bk-status{display:flex;gap:.8rem;align-items:flex-start;background:var(--surface);
  border:1px solid var(--bone-faint);border-radius:14px;padding:1.1rem 1.2rem;margin-top:.25rem}
.bk-status svg{flex:none;width:22px;height:22px;color:var(--brass);margin-top:.15rem}
.bk-status p{margin:0;color:var(--bone-dim)}
.bk-status p strong{color:var(--bone)}
.bk-status .btn-row{margin-top:.9rem}
.bk-err{border-color:rgba(224,138,109,.5)}
.bk-err svg{color:#e08a6d}

/* Details */
.bk-field{display:grid;gap:.35rem;margin-bottom:.9rem;max-width:26rem}
.bk-field label{font-weight:700}
.bk-field .opt{font-weight:400;color:var(--bone-dim);font-size:.9rem}
.bk-field input{width:100%;min-height:52px;border-radius:12px;border:1px solid var(--bone-faint);
  background:var(--surface);color:var(--bone);padding:.65rem 1rem;font-size:1rem;caret-color:var(--brass)}
.bk-field input:focus{outline:none;border-color:var(--brass);box-shadow:0 0 0 3px rgba(200,162,75,.22)}
.bk-field input[aria-invalid="true"]{border-color:#e08a6d}
.bk-ferr{color:#e8a0a0;font-size:.88rem;font-weight:600;min-height:1.2em;margin:0}
.bk-summary{background:var(--surface);border:1px solid var(--bone-faint);border-radius:14px;
  padding:1.1rem 1.2rem;margin-bottom:1.25rem;display:grid;gap:.55rem}
.bk-summary .row{display:flex;justify-content:space-between;align-items:baseline;gap:1rem}
.bk-summary .k{color:var(--bone-dim);font-size:.9rem}
.bk-summary .v{font-weight:700;text-align:right;font-variant-numeric:tabular-nums}
.bk-summary .v.gold{color:var(--brass);font-family:var(--font-display);font-size:1.25rem}
.bk-change{background:none;border:0;color:var(--brass);font-weight:600;font-size:.85rem;cursor:pointer;padding:0}
.bk-change:hover{text-decoration:underline;text-underline-offset:3px}

/* Actions */
.bk-actions{display:flex;gap:.75rem;margin-top:1.4rem;align-items:center}
.bk-actions .btn{flex:1}
.bk-actions .btn-ghost{flex:0 0 auto}

/* Rail (desktop summary) */
.bk-rail-card{background:var(--surface);border:1px solid var(--bone-faint);border-radius:var(--radius);
  padding:1.3rem;box-shadow:0 10px 28px rgba(0,0,0,.35)}
.bk-rail-card h2{font-size:1.05rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brass);margin-bottom:.9rem}
.bk-rail-card .row{display:flex;justify-content:space-between;gap:1rem;padding:.45rem 0;
  border-bottom:1px dotted var(--bone-faint);font-size:.95rem}
.bk-rail-card .row:last-of-type{border-bottom:0}
.bk-rail-card .k{color:var(--bone-dim)}
.bk-rail-card .v{font-weight:700;text-align:right}
.bk-rail-card .total{font-family:var(--font-display);font-size:1.5rem;color:var(--brass);
  font-variant-numeric:tabular-nums}
.bk-rail-empty{color:var(--bone-dim);font-size:.95rem;margin:0}

/* Success */
.bk-done{text-align:center;padding:1rem 0}
.bk-check{width:76px;height:76px;margin:0 auto 1rem;display:block}
.bk-check circle{stroke:var(--brass);stroke-width:3;fill:rgba(200,162,75,.1)}
.bk-check path{stroke:var(--brass);stroke-width:4;fill:none;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:40;stroke-dashoffset:40;animation:draw .45s ease-out .15s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.bk-ref{display:inline-block;margin-top:.6rem;padding:.5rem 1.1rem;border:1px dashed var(--brass);
  border-radius:10px;font-weight:700;letter-spacing:.12em;font-variant-numeric:tabular-nums;color:var(--brass)}

::selection{background:rgba(200,162,75,.35)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

@media (min-width:721px){
  .bk-slots{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (max-width:900px){
  .bk-layout{grid-template-columns:minmax(0,1fr)}
  .bk-rail{display:none}
}
@media (max-width:720px){
  .bk-actions{position:sticky;bottom:calc(84px + env(safe-area-inset-bottom));z-index:5;
    background:linear-gradient(transparent,var(--ink) 32%);padding:1.4rem 0 .4rem;margin-top:1rem}
  .bk-steps li{font-size:.68rem}
  .bk-dot{width:32px;height:32px}
  .bk-steps li::after{top:15px}
  .bk-slots{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){
  .bk-panel.enter{animation:none}
  .bk-sk{animation:none}
  .bk-check path{animation:none;stroke-dashoffset:0}
  .bk-service,.bk-slot,.bk-day{transition:none}
}