:root{--seat-size:72px;--seat-gap:10px;--stagger:calc((var(--seat-size) + var(--seat-gap)) / 2);--text:#18181b;--muted:#71717a;--border:#d4d4d8;--bg:#f4f4f5;--accent:#2563eb;--accent-weak:#dbeafe;--accent-text:#1e3a8a;--danger:#dc2626}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,Yu Gothic,system-ui,sans-serif;font-size:15px;line-height:1.6}h2,h3{margin:0}.app{flex-direction:column;min-height:100vh;display:flex}.app-header{z-index:5;border-bottom:1px solid var(--border);background:#fff;justify-content:space-between;align-items:center;gap:12px;padding:12px 20px;display:flex;position:sticky;top:0}.app-title{color:var(--text);cursor:pointer;background:0 0;border:none;padding:0;font-size:18px;font-weight:700}.app-main{flex:1;width:100%;max-width:920px;margin:0 auto;padding:20px}.login{justify-content:center;padding:48px 16px;display:flex}.login-card{border:1px solid var(--border);background:#fff;border-radius:10px;flex-direction:column;gap:12px;width:100%;max-width:320px;padding:24px;display:flex}.login-title{margin:0;font-size:20px}.page{flex-direction:column;gap:8px;display:flex}.page-head{flex-direction:column;align-items:flex-start;gap:8px;display:flex}.page-title-row{align-items:center;gap:12px;width:100%;display:flex}.page-head .inline-form{width:100%}.page-title{font-size:26px}.card{border:1px solid var(--border);background:#fff;border-radius:10px;flex-direction:column;gap:12px;padding:16px;display:flex}.card-title{font-size:16px}.muted{color:var(--muted);margin:0}.error-text{color:var(--danger);margin:0;font-weight:600}button{font:inherit}.button-primary,.button-sub,.button-danger{cursor:pointer;white-space:nowrap;border-radius:6px;padding:6px 14px}.button-primary{border:1px solid var(--accent);background:var(--accent);color:#fff;font-weight:600}.button-sub{border:1px solid var(--border);color:var(--text);background:#fff}.button-danger{color:var(--danger);background:#fff;border:1px solid #fecaca}.button-primary:disabled,.button-sub:disabled,.button-danger:disabled{opacity:.5;cursor:not-allowed}input[type=text],input:not([type]){border:1px solid var(--border);font:inherit;color:var(--text);background:#fff;border-radius:6px;padding:6px 10px}input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.inline-form{align-items:center;gap:8px;display:flex}.inline-form input,.grow{flex:1;min-width:0}.list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.list-item{border:1px solid var(--border);background:#fff;border-radius:8px;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 12px;display:flex}.list.compact .list-item{background:#fafafa}.item-main{text-align:left;cursor:pointer;background:0 0;border:none;flex:1;min-width:0;padding:0}.item-name{font-weight:600}.item-actions{gap:6px;display:flex}.head-actions{margin-left:auto}.page-fab{padding-bottom:96px}.event-list .list-item{padding:0}.event-row{border-radius:8px;justify-content:space-between;align-items:baseline;gap:20px;width:100%;padding:22px 24px;display:flex}.event-row:hover{background:#f4f4f5}.event-list .item-name{overflow-wrap:anywhere;font-size:19px;font-weight:600}.event-count{color:var(--muted);white-space:nowrap;flex:none;font-size:15px}.row-meta{flex:none;align-items:center;gap:8px;display:inline-flex}.row-arrow{color:var(--muted)}.song-list .list-item{padding:0}.song-dragging{opacity:.6}.song-row{border-radius:8px;justify-content:space-between;align-items:baseline;gap:16px;width:100%;padding:14px 16px;display:flex}.song-row:hover{background:#f4f4f5}.song-row .item-name{font-size:17px}.hamburger{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:8px;flex-direction:column;justify-content:center;gap:4px;width:46px;height:40px;padding:0 11px;display:flex}.hamburger:hover{border-color:var(--accent)}.hamburger span{background:var(--text);border-radius:1px;height:2px;display:block}.panel-backdrop{z-index:40;background:#00000026;position:fixed;inset:0}.side-panel{z-index:41;border-left:1px solid var(--border);background:#fff;flex-direction:column;gap:22px;width:min(380px,100vw);padding:20px;display:flex;position:fixed;top:0;bottom:0;right:0;overflow:hidden;box-shadow:-8px 0 24px #0000001f}.side-panel-head{align-items:center;gap:12px;display:flex}.segmented-control{border:1px solid var(--border);background:#f4f4f5;border-radius:8px;flex:1;gap:2px;padding:2px;display:flex}.segmented-control .segment{color:var(--muted);font:inherit;cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:6px;flex:1;padding:6px 10px;font-size:14px}.segmented-control .segment.active{color:var(--text);background:#fff;font-weight:600;box-shadow:0 1px 2px #0000001f}.side-panel-title{font-size:17px}.panel-section{flex-direction:column;gap:10px;display:flex}.panel-section+.panel-section{border-top:1px solid var(--border);padding-top:18px}.panel-section-fill{flex:1;min-height:0}.panel-section-title{color:var(--muted);margin:0;font-size:14px}.panel-delete{text-align:center;width:100%;padding:10px 14px}.nav-cell{border:1px solid var(--border);text-align:left;cursor:pointer;background:#fff;border-radius:10px;align-items:center;gap:12px;width:100%;padding:20px 22px;display:flex}.nav-cell:hover{background:#f4f4f5}.nav-cell-label{flex:1;font-size:17px;font-weight:600}.nav-cell-meta{color:var(--muted);font-size:15px}.nav-cell-arrow{color:var(--muted);font-size:18px}.page-subtitle{margin-top:-8px;font-size:14px}.link-button{color:var(--accent);font:inherit;cursor:pointer;background:0 0;border:none;padding:0;text-decoration:underline}.fab{z-index:20;background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;padding:0;font-size:26px;line-height:1;transition:transform .15s,box-shadow .15s;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 4px 14px #2563eb59}.fab:hover{transform:scale(1.05);box-shadow:0 6px 18px #2563eb73}.card-title-row{justify-content:space-between;align-items:center;gap:12px;display:flex}.member-picker{flex-direction:column;gap:8px;min-height:0;display:flex}.member-picker-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.member-select{flex-direction:column;flex:1;gap:6px;min-height:0;margin:0;padding:0;list-style:none;display:flex;overflow-y:auto}.modal .member-select{max-height:45vh}.member-option{border:1px solid var(--border);width:100%;color:var(--text);font:inherit;text-align:left;cursor:pointer;background:#fff;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;display:flex}.member-option:hover{border-color:var(--accent)}.member-option.selected{border-color:var(--accent);background:var(--accent-weak)}.member-option-name{overflow-wrap:anywhere}.member-option-check{width:1.4em;color:var(--accent);text-align:center;flex:none;font-size:17px;font-weight:700;line-height:1}.modal-backdrop{z-index:100;background:#0006;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:#fff;border-radius:12px;flex-direction:column;gap:12px;width:100%;max-width:360px;max-height:calc(100vh - 32px);padding:20px;display:flex;overflow-y:auto}.modal-wide{max-width:440px}.modal h2{font-size:17px}.modal-hint{color:var(--muted);margin:0;font-size:13px}.modal-actions{justify-content:flex-end;gap:8px;display:flex}.seat-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.seat-toolbar-group{align-items:center;gap:8px;display:flex}.cols-value{text-align:center;min-width:2ch;font-weight:700}.save-status{min-height:1.5em;color:var(--muted);font-size:13px}.save-status.saved{color:#15803d}.save-status.error{color:var(--danger)}.save-status.unsaved{color:#b45309}.seat-grid-scroll{padding:8px 0 12px;overflow-x:auto}.seat-grid{align-items:center;gap:var(--seat-gap);border:1px solid var(--border);background:#fff;border-radius:12px;flex-direction:column;width:100%;min-width:fit-content;padding:32px 24px;display:flex}.seat-row{gap:var(--seat-gap);min-height:var(--seat-size);transform:translateX(calc(var(--row-shift,0) * var(--stagger)));display:flex}.seat-placeholder{width:var(--seat-size);height:var(--seat-size);flex:0 0 var(--seat-size);border:2px dashed var(--accent);background:var(--accent-weak);opacity:.7;border-radius:50%;animation:.16s seat-placeholder-in}@keyframes seat-placeholder-in{0%{opacity:0;transform:scale(.8)}to{opacity:.7;transform:none}}.seat{cursor:grab;-webkit-user-select:none;user-select:none;touch-action:none;display:flex;position:relative}.seat:active{cursor:grabbing}.seat-hidden{opacity:0}.seat-lifted{top:0;left:calc(var(--lift-index,0) * (var(--seat-size) + var(--seat-gap)));position:absolute}.seat-circle{width:var(--seat-size);height:var(--seat-size);flex:0 0 var(--seat-size);aspect-ratio:1;overflow-wrap:anywhere;text-align:center;border:2px solid var(--border);color:var(--text);background:#fafafa;border-radius:50%;justify-content:center;align-items:center;padding:6px;font-weight:600;line-height:1.25;display:flex;overflow:hidden;box-shadow:0 1px 2px #00000014}.seat-circle.dragging{cursor:grabbing;transform:scale(1.08);box-shadow:0 8px 20px #00000040}.seat-remove{border:1px solid var(--border);width:22px;height:22px;color:var(--muted);cursor:pointer;opacity:0;background:#fff;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:14px;line-height:1;transition:opacity .15s;display:flex;position:absolute;top:-6px;right:-6px}.seat:hover .seat-remove,.seat:focus-within .seat-remove,.seat-remove:focus-visible{opacity:1}@media (hover:none){.seat-remove{opacity:1}}@media (width<=600px){:root{--seat-size:60px}.app-main{padding:12px}}.seat-circle.red{color:#991b1b;background:#fee2e2;border-color:#ef4444}.seat-circle.blue{color:#1e3a8a;background:#dbeafe;border-color:#2563eb}.seat-circle.yellow{color:#713f12;background:#fef9c3;border-color:#ca8a04}.seat-circle.green{color:#14532d;background:#dcfce7;border-color:#16a34a}.seat-circle.purple{color:#4c1d95;background:#f3e8ff;border-color:#9333ea}.seat-circle.orange{color:#7c2d12;background:#ffedd5;border-color:#ea580c}.seat-circle.cyan{color:#164e63;background:#cffafe;border-color:#0891b2}.seat-circle.pink{color:#831843;background:#fce7f3;border-color:#db2777}.seat-circle.empty{color:#0000;box-shadow:none;background:0 0;border-style:dashed;border-color:#cbd5e1}.seat-audience{color:var(--muted);flex-direction:column;align-self:stretch;align-items:center;gap:3px;font-size:13px;display:flex}.seat-audience-line{border-top:1px solid var(--border);align-self:stretch}.seat-stage{color:var(--text);justify-content:space-between;align-self:stretch;font-size:15px;font-weight:700;display:flex}.seat-legend{color:var(--text);flex-wrap:wrap;justify-content:center;gap:6px 18px;margin-top:10px;font-size:13px;display:flex}.legend-item{align-items:center;gap:6px;display:inline-flex}.legend-dot{border-radius:50%;flex:none;width:12px;height:12px}.legend-dot-red{background:#ef4444}.legend-dot-blue{background:#2563eb}.legend-dot-yellow{background:#eab308}.legend-dot-green{background:#16a34a}.legend-dot-purple{background:#9333ea}.legend-dot-orange{background:#ea580c}.legend-dot-cyan{background:#0891b2}.legend-dot-pink{background:#db2777}.group-name-row{align-items:center;gap:8px;display:flex}.group-name-row input{flex:1;min-width:0}.part-remove{border:1px solid var(--border);width:24px;height:24px;color:var(--muted);cursor:pointer;background:#fff;border-radius:50%;flex:none;padding:0;font-size:14px;line-height:1}.part-add{color:var(--accent);font:inherit;cursor:pointer;background:0 0;border:none;align-self:flex-end;padding:0}.member-option-row{align-items:center;gap:6px;display:flex}.member-option-row .member-option{flex:1;width:auto;min-width:0}.member-color{border:1.5px dashed var(--border);cursor:pointer;background:#fff;border-radius:50%;flex:none;width:22px;height:22px}.member-color-red{background:#ef4444;border-color:#ef4444}.member-color-blue{background:#2563eb;border-color:#2563eb}.member-color-yellow{background:#eab308;border-color:#eab308}.member-color-green{background:#16a34a;border-color:#16a34a}.member-color-purple{background:#9333ea;border-color:#9333ea}.member-color-orange{background:#ea580c;border-color:#ea580c}.member-color-cyan{background:#0891b2;border-color:#0891b2}.member-color-pink{background:#db2777;border-color:#db2777}.member-color-red,.member-color-blue,.member-color-yellow,.member-color-green,.member-color-purple,.member-color-orange,.member-color-cyan,.member-color-pink{border-style:solid}.share-url-row{align-items:center;gap:8px;display:flex}.share-url-row input{flex:1;min-width:0}.copy-section{border-top:1px solid var(--border);flex-direction:column;gap:8px;padding-top:12px;display:flex}.copy-section .list{max-height:140px;overflow-y:auto}