:root{--bg:#f2f5f8;--card:#fff;--ink:#1b2733;--muted:#64748b;--line:#dbe3ea;--primary:#0e5aa7;--primary-ink:#fff;--ok:#15803d;--err:#b91c1c;--warn:#b45309;font-family:Segoe UI,Heebo,Arial,sans-serif}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0}button{font-family:inherit}.app{flex-direction:column;min-height:100vh;display:flex}.topbar{color:#fff;background:#12324f;justify-content:space-between;align-items:center;gap:16px;padding:12px 24px;display:flex}.brand{flex-direction:column;display:flex}.brand-title{font-size:18px;font-weight:700}.brand-sub{opacity:.75;font-size:12px}.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;border-radius:8px;padding:8px 16px;font-size:14px}.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}.btn.primary:disabled{opacity:.45;cursor:not-allowed}.btn.big{padding:12px 32px;font-size:17px}.btn.ghost{color:#fff;background:0 0;border-color:#fff6}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:0 1px 2px #102a430f}.muted{color:var(--muted)}.error{color:var(--err);font-weight:600}.upload-screen{flex-direction:column;gap:20px;width:100%;max-width:880px;margin:0 auto;padding:28px 20px 60px;display:flex}.intro h1{margin:0 0 8px;font-size:24px}.intro p{margin:6px 0;line-height:1.6}.demo-note{color:var(--muted);font-size:13px}.slots{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;display:grid}.slot{cursor:pointer;transition:border-color .15s,transform 50ms}.slot:hover{border-color:var(--primary)}.slot.done{border-color:var(--ok);background:#f2fbf5}.slot-head{justify-content:space-between;align-items:center;display:flex}.slot-title{font-weight:700}.tag{border:1px solid var(--line);color:var(--muted);border-radius:20px;padding:2px 10px;font-size:11px}.tag.req{color:var(--primary);border-color:var(--primary)}.slot-hint{color:var(--muted);min-height:34px;margin:8px 0;font-size:13px}.slot-status{color:var(--muted);margin:0;font-size:13px}.slot-status.ok{color:var(--ok);font-weight:600}.build h2{margin:0 0 10px;font-size:18px}.day-picker{flex-wrap:wrap;gap:8px;margin:12px 0 20px;display:flex}.day-chip{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:10px;flex-direction:column;align-items:center;padding:8px 14px;display:flex}.day-chip-name{font-size:14px;font-weight:700}.day-chip-date{color:var(--muted);font-size:12px}.day-chip.selected{border-color:var(--primary);background:#e8f1fb}.boost-row{cursor:pointer;align-items:center;gap:8px;margin-bottom:12px;font-size:13.5px;display:flex}.day-strip{flex-wrap:wrap;align-items:center;gap:12px;padding:12px 18px;display:flex}.day-strip .day-picker{margin:0}.day-strip-label{color:var(--muted);white-space:nowrap;font-size:13.5px;font-weight:700}.day-strip .day-chip{padding:5px 11px}.day-strip .day-chip:disabled{cursor:default;opacity:1}.day-strip .day-chip:disabled:not(.selected){opacity:.55;cursor:wait}.day-strip .solver-progress{flex:1;min-width:260px;margin:0}.day-strip .error{width:100%;margin:0}.plan-view{flex-direction:column;gap:12px;padding:16px 20px 40px;display:flex}.plan-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.plan-header h1{margin:0;font-size:20px}.stats{flex-wrap:wrap;gap:10px;display:flex}.stat{border:1px solid var(--line);border-radius:10px;flex-direction:column;align-items:center;min-width:74px;padding:6px 14px;display:flex}.stat-value{font-size:17px;font-weight:800}.stat-label{color:var(--muted);white-space:nowrap;font-size:11px}.stat.warn .stat-value{color:var(--warn)}.qa-strip{cursor:pointer;border:1px solid var(--line);background:#f0fdf4;border-radius:10px;padding:10px 16px;font-size:14px}.qa-strip.has-errors{background:#fef2f2;border-color:#fecaca}.qa-count{margin:0 6px;font-weight:700}.qa-count.err{color:var(--err)}.qa-count.warn{color:var(--warn)}.qa-panel{flex-direction:column;gap:8px;max-height:260px;display:flex;overflow-y:auto}.qa-item{align-items:baseline;gap:10px;font-size:13px;display:flex}.qa-badge{color:var(--err);background:#fee2e2;border-radius:6px;flex-shrink:0;padding:2px 8px;font-size:11px;font-weight:700}.qa-item.warning .qa-badge{color:var(--warn);background:#fef3c7}.qa-check{flex-shrink:0;font-weight:700}.unassigned h3{margin:0 0 8px;font-size:15px}.unassigned p{margin:4px 0;font-size:13px}.grid-wrap{padding-bottom:8px;overflow-x:auto}.grid{align-items:flex-start;gap:10px;min-width:min-content;display:flex}.col{flex-shrink:0;width:210px}.col-head{color:#fff;text-align:center;background:#12324f;border-radius:10px 10px 0 0;padding:10px 12px;position:relative}.col-idx{top:8px;background:#ffffff26;border-radius:6px;padding:1px 7px;font-size:11px;position:absolute;inset-inline-start:10px}.col-name{font-size:14px;font-weight:700}.col-home{opacity:.8;font-size:12px}.col-hours{direction:ltr;unicode-bidi:embed;background:#ffffff1f;border-radius:6px;margin-top:3px;padding:1px 10px;font-size:12px;display:inline-block}.col-body{background:var(--card);border:1px solid var(--line);border-top:0;border-radius:0 0 10px 10px;flex-direction:column;gap:6px;padding:8px;display:flex}.block{border:1px solid var(--line);text-align:start;cursor:pointer;border-inline-start:4px solid var(--muted);background:#fff;border-radius:8px;width:100%;padding:7px 9px}.block:hover{filter:brightness(.97)}.block.selected{outline:2px solid var(--primary)}.block-type{font-size:12.5px;font-weight:700}.block-route{align-items:baseline;gap:6px;margin-top:2px;font-size:12px;display:flex}.block-num{color:var(--muted);font-size:11px}.block-times{color:var(--muted);justify-content:space-between;margin-top:2px;font-size:12px;display:flex}.block-times>:first-child,.times-ltr{direction:ltr;unicode-bidi:embed}.block-score{color:var(--primary);background:#e8f1fb;border-radius:6px;padding:0 6px;font-size:11.5px;font-weight:800}.block-label{color:var(--muted);margin-top:2px;font-size:11px}.block.station{background:#f4fbf6;border-inline-start-color:#16a34a}.block.onboard{background:#f3f7fe;border-inline-start-color:#2563eb}.block.onboard.partial{border-inline-start-color:#7c9ff0}.block.carriage{background:#fef8f1;border-inline-start-color:#ea842c}.block.track{background:#faf5ff;border-inline-start-color:#9333ea}.block.service{background:#fefce8;border-inline-start-color:#ca8a04}.block.special{background:#f8fafc;border-inline-start-color:#475569}.block.travel{cursor:default;background:#f1f5f9;border-inline-start-color:#cbd5e1}.block.travel .block-type{color:var(--muted);font-weight:400}.wa-btn{align-self:center;align-items:center;gap:4px;text-decoration:none;display:inline-flex}.wa-panel{width:640px;max-width:100%;max-height:86vh;position:relative;overflow-y:auto}.wa-panel .close{top:10px;cursor:pointer;color:var(--muted);background:0 0;border:0;font-size:16px;position:absolute;inset-inline-end:12px}.wa-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin:10px 0 14px;display:flex}.wa-status{color:var(--warn);font-size:13px}.wa-status.ok{color:var(--ok)}.wa-results{margin-bottom:10px}.wa-results p{margin:2px 0;font-size:13px}.ok-text{color:var(--ok)}.wa-list{flex-direction:column;gap:12px;display:flex}.wa-item{border:1px solid var(--line);border-radius:10px;padding:10px 12px}.wa-item-head{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.wa-actions{gap:6px;margin-inline-start:auto;display:flex}.wa-open{color:#fff;background:#25d366;border-color:#25d366;text-decoration:none}.wa-text{border:1px solid var(--line);white-space:pre-wrap;background:#f6f8fa;border-radius:8px;max-height:180px;margin:8px 0 0;padding:10px;font-family:inherit;font-size:12.5px;line-height:1.55;overflow-y:auto}.score-overlay{z-index:30;background:#0f1e2d73;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.score-panel{width:420px;max-width:100%;position:relative}.score-panel .close{top:10px;cursor:pointer;color:var(--muted);background:0 0;border:0;font-size:16px;position:absolute;inset-inline-end:12px}.score-panel h3{margin:0 0 4px}.score-big{align-items:baseline;gap:8px;margin:14px 0;display:flex}.score-value{color:var(--primary);font-size:42px;font-weight:800}.score-of{color:var(--muted)}.bars{flex-direction:column;gap:8px;margin-bottom:14px;display:flex}.bar-row{grid-template-columns:120px 1fr 48px;align-items:center;gap:8px;font-size:12.5px;display:grid}.bar-track{background:#eef2f6;border-radius:20px;height:9px;overflow:hidden}.bar-fill{background:var(--primary);border-radius:20px;height:100%}.bar-val{color:var(--muted);text-align:left;direction:ltr}.explanation{background:#f0f6fd;border:1px solid #d3e4f5;border-radius:8px;margin:0;padding:10px 12px;font-size:13.5px;line-height:1.6}.solver-progress{background:#f0f6fd;border:1px solid #d3e4f5;border-radius:10px;align-items:center;gap:12px;margin-top:12px;padding:12px 14px;display:flex}.hourglass{font-size:26px;line-height:1;animation:2s ease-in-out infinite hourglass-flip}@keyframes hourglass-flip{0%,40%{transform:rotate(0)}60%,to{transform:rotate(180deg)}}.solver-progress-body{flex:1}.solver-progress-text{color:var(--muted);margin-bottom:7px;font-size:13px}.solver-progress-track{background:#e2eaf2;border-radius:20px;height:8px;overflow:hidden}.solver-progress-fill{background:var(--primary);border-radius:20px;height:100%;transition:width 1s linear}.week-summary{margin-top:16px}.ws-scroll{overflow-x:auto}.ws-table{border-collapse:collapse;width:100%;font-size:13px}.ws-table th,.ws-table td{text-align:center;white-space:nowrap;border-bottom:1px solid #eef2f6;padding:7px 10px}.ws-table th{color:var(--muted);font-weight:600}.ws-ok{color:#187a3c;font-weight:700}.ws-gap{color:#b3261e;font-weight:700}.ws-edge{color:var(--muted);font-size:12px}.ws-total td{background:#f7fafd;border-top:2px solid #d3e4f5;font-weight:700}.ws-note{margin-top:8px;font-size:12.5px}.ws-current td{background:#eef6ff;font-weight:700}.ws-surplus{color:#187a3c;background:#e6f4ea;border-radius:8px;margin-inline-start:4px;padding:0 5px;font-size:11px;font-weight:600}.stat-extra{color:#187a3c;vertical-align:2px;background:#e6f4ea;border-radius:8px;margin-inline-start:6px;padding:1px 6px;font-size:11.5px;font-weight:600}.monthly{border-top:1px solid var(--line);margin-top:16px;padding-top:12px}.monthly h3{margin:0 0 10px;font-size:14.5px}.mo-row{align-items:center;gap:10px;margin:7px 0;font-size:13px;display:flex}.mo-label{flex-shrink:0;width:140px;font-weight:600}.mo-track{background:#edf1f5;border-radius:5px;flex:1;min-width:140px;height:10px;position:relative;overflow:hidden}.mo-fill{inset-inline-start:0;background:var(--primary);border-radius:5px;position:absolute;top:0;bottom:0}.mo-fill.week{background:#a7c8e8}.mo-nums{text-align:center;min-width:70px;font-weight:700}.mo-week{color:var(--muted);white-space:nowrap}.btn.edit-on{color:#fff;background:#b45309;border-color:#b45309}.btn.danger{color:var(--err);border-color:var(--err);background:#fff}.block.editable{cursor:pointer}.block.editable:hover{outline:2px dashed var(--primary)}.block-manual{color:#b45309;background:#fef3e2;border-radius:4px;margin-inline-start:6px;padding:0 4px;font-size:11px}.block.add-slot{border:1px dashed var(--line);color:var(--muted);text-align:center;border-inline-start-color:var(--line);background:0 0;font-size:12.5px}.block.add-slot:hover{color:var(--primary);border-color:var(--primary)}.edit-panel{width:460px}.edit-grid{grid-template-columns:1fr 1fr;gap:10px 14px;margin-top:12px;display:grid}.edit-grid label{color:var(--muted);flex-direction:column;gap:4px;font-size:12.5px;display:flex}.edit-grid input,.edit-grid select{color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 10px;font-family:inherit;font-size:14px}.edit-grid input[type=time]{direction:ltr}.edit-wide{grid-column:1/-1}.edit-actions{gap:10px;margin-top:16px;display:flex}.edit-note{margin-top:12px;font-size:12px}.block[draggable=true]{cursor:grab}.block.dragging{opacity:.45}.block.drop-after{outline:2px dashed var(--primary);outline-offset:2px}.col-body.drop-target{background:#eef5fc;border-radius:8px}.drag-note{color:var(--muted);justify-content:space-between;align-items:center;gap:10px;padding:10px 16px;font-size:13.5px;display:flex}.drag-note.is-err{color:var(--err);border-color:var(--err)}.btn.ghost-dark{color:inherit;cursor:pointer;background:0 0;border:none;font-size:14px}.col-body{padding-bottom:48px}