:root{--hs-orange:#ff7a59;--hs-orange-soft:#ffe6df;--hs-orange-tint:#fff5f1;--hs-text:#2e3e51;--hs-text-soft:#516f90;--hs-text-mute:#99acc2;--hs-line:#ebeef0;--hs-line-strong:#cbd6e2;--hs-bg:#fff;--hs-bg-tint:#f5f8fa;--hs-success:#00a4bd;--hs-danger:#f2545b;--shadow-sm:0 1px 2px rgba(46,62,81,.06);--shadow-md:0 4px 12px rgba(46,62,81,.08);--shadow-lg:0 12px 32px rgba(46,62,81,.12);--r-sm:6px;--r-md:10px;--r-lg:14px}*{box-sizing:border-box}body,html{height:100%}body{background:var(--hs-bg);color:var(--hs-text);font:14px/1.45 -apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,Helvetica Neue,Arial,sans-serif;margin:0}.loading{align-items:center;color:var(--hs-text-mute);display:flex;height:100vh;justify-content:center}.loader{font-size:14px}.app{display:grid;grid-template-areas:"left calendar" "footer footer";grid-template-columns:360px 1fr;grid-template-rows:1fr auto;height:100vh}.left{border-right:1px solid var(--hs-line);grid-area:left;overflow-y:auto;padding:20px}.left h2{color:var(--hs-text-soft);font-size:11px;font-weight:600;letter-spacing:.06em;margin:0 0 10px;text-transform:uppercase}.left section+section{margin-top:24px}.left details.left-section{margin:0}.left details.left-section+details.left-section,.left details.left-section+section,.left section+details.left-section{margin-top:16px}.left details.left-section>summary{align-items:center;border-radius:var(--r-sm);cursor:pointer;display:flex;gap:6px;list-style:none;padding:4px 0;user-select:none}.left details.left-section>summary::-webkit-details-marker{display:none}.left details.left-section>summary:hover{color:var(--hs-text)}.left details.left-section>summary h2{margin:0}.left details.left-section>summary .caret{color:var(--hs-text-mute);display:inline-block;font-size:11px;transition:transform .15s ease}.left details.left-section[open]>summary .caret{transform:rotate(90deg)}.left 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.num{color:var(--hs-text-mute);font-size:12px;font-weight:400;margin-left:4px}.cal-grid .head.today{color:var(--hs-orange)}.time-label{color:var(--hs-text-mute);font-size:11px;padding:4px 8px 0 0;text-align:right}.cell,.time-label{border-right:1px solid var(--hs-line)}.cell{border-bottom:1px solid var(--hs-line);cursor:pointer;min-height:64px;padding:4px;position:relative;transition:background .1s}.cell:hover{background:var(--hs-orange-tint)}.cell.unavailable{cursor:default}.cell.unavailable,.cell.unavailable:hover{background:repeating-linear-gradient(45deg,transparent,transparent 6px,var(--hs-bg-tint) 6px,var(--hs-bg-tint) 12px)}.cell.move-target{background:var(--hs-orange-soft);outline:2px dashed var(--hs-orange);outline-offset:-4px}.cell.today-col{background:var(--hs-bg-tint)}.cell.today-col:hover{background:var(--hs-orange-tint)}.placed{background:var(--hs-orange);border-radius:var(--r-sm);box-shadow:var(--shadow-sm);color:#fff;cursor:pointer;display:flex;flex-direction:column;font-size:12px;gap:2px;height:100%;line-height:1.25;padding:6px 8px;transition:transform .08s,box-shadow .12s,opacity .12s}.placed:hover{box-shadow:var(--shadow-md)}.placed.dim{opacity:.35}.placed.selected{outline:2px solid var(--hs-text);outline-offset:1px}.placed .code{font-size:11px;font-weight:700;letter-spacing:.02em}.placed .trainer{font-size:11px;opacity:.9}.placed .x{align-items:center;background:hsla(0,0%,100%,.18);border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;font-size:12px;height:18px;justify-content:center;line-height:1;position:absolute;right:4px;top:4px;width:18px}.placed 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0}.chip{align-items:center;background:var(--hs-bg-tint);border:1px solid var(--hs-line);border-radius:999px;color:var(--hs-text);display:inline-flex;font-size:12px;gap:4px;padding:2px 8px 2px 10px}.chip .x{background:none;border:none;color:var(--hs-text-mute);cursor:pointer;font-size:13px;padding:0 2px}.chip .x:hover{color:var(--hs-danger)}.trainer-filter{display:flex;flex-wrap:wrap;gap:6px}.trainer-pill{align-items:center;background:var(--hs-bg);border:1px solid var(--hs-line-strong);border-radius:999px;color:var(--hs-text);cursor:pointer;display:inline-flex;font-size:12px;gap:6px;padding:4px 10px;user-select:none}.trainer-pill.on{background:var(--hs-text);border-color:var(--hs-text);color:#fff}.popover{background:var(--hs-bg);border:1px solid var(--hs-line);border-radius:var(--r-md);box-shadow:var(--shadow-md);padding:14px}.popover h3{font-size:13px;font-weight:600;margin:0 0 8px}.attendee-block{display:flex;flex-direction:column;gap:10px}.attendee-divider{background:var(--hs-line);height:1px;margin:4px 0 0}.search-results{display:flex;flex-direction:column;gap:4px;margin-top:6px;max-height:220px;overflow-y:auto}.search-row{align-items:center;background:var(--hs-bg-tint);border-radius:var(--r-sm);display:flex;gap:8px;justify-content:space-between;padding:6px 8px}.search-row .name{font-size:13px}.search-row .em{color:var(--hs-text-soft);font-size:11px}.footer{align-items:center;background:var(--hs-bg-tint);border-top:1px solid var(--hs-line);display:flex;grid-area:footer;justify-content:space-between;padding:14px 24px}.footer .status{color:var(--hs-text-soft);font-size:13px}.alert{border-radius:var(--r-sm);font-size:13px;margin:0 0 12px;padding:10px 12px}.alert.danger{background:#ffe6e6;border:1px solid #f9c8cb;color:#b3242b}.alert.success{background:#def6f7;border:1px solid #b6e9ec;color:#006c80}.alert.info{background:#fff5f1;border:1px solid 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