:root{--bg: #0f1419;--surface: #1a2332;--surface-2: #243044;--border: #2d3f56;--text: #e8eef5;--muted: #8fa3bc;--accent: #22c55e;--accent-dim: #166534;--danger: #ef4444;--warning: #f59e0b;--radius: 12px;--shadow: 0 8px 24px rgba(0, 0, 0, .35);font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.5;color:var(--text);background:var(--bg)}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(34,197,94,.12),transparent),var(--bg)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.02em}p{margin:0}.app-shell{max-width:960px;margin:0 auto;padding:0 16px 48px}.app-header{padding:20px 0 12px}.brand{display:flex;align-items:center;gap:12px}.brand-icon{font-size:2rem;line-height:1}.brand h1{font-size:1.25rem}.brand p{color:var(--muted);font-size:.875rem}.app-nav{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin-bottom:16px;scrollbar-width:none}.app-nav::-webkit-scrollbar{display:none}.nav-link{flex-shrink:0;padding:8px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--muted);font-size:.875rem;font-weight:500;text-decoration:none;transition:background .15s,color .15s,border-color .15s}.nav-link:hover{color:var(--text);text-decoration:none}.nav-link.active{background:var(--accent-dim);border-color:var(--accent);color:#dcfce7}.app-main{min-height:60vh}.page-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.page-header h2{font-size:1.375rem}.filter-bar{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px}.filter-panel{display:flex;flex-direction:column;gap:16px}.field-inline{min-width:160px;margin:0}.status-filter{max-width:280px}.filter-summary{font-size:.875rem}.month-filter{display:flex;flex-direction:column;gap:10px}.month-filter-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.month-filter-nav{display:flex;align-items:center;gap:4px}.month-filter-year{width:5.5rem;min-width:0;padding-left:8px;padding-right:8px;text-align:center}.month-filter-caption{margin:0;font-size:.875rem;color:var(--muted)}.month-filter-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}@media(max-width:520px){.month-filter-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}.month-pill{border:1px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:8px;padding:8px 4px;font-size:.8125rem;font-weight:600;cursor:pointer;transition:border-color .15s,background .15s,color .15s}.month-pill:hover{border-color:var(--accent)}.month-pill-active{background:color-mix(in srgb,var(--accent) 22%,var(--surface-2));border-color:var(--accent);color:#bbf7d0}.month-pill-has-data:not(.month-pill-active){box-shadow:inset 0 -2px 0 var(--accent)}.btn-sm{padding:6px 10px;font-size:.8125rem}.btn-active{border-color:var(--accent);color:#bbf7d0}.btn-icon{min-width:36px;padding:6px 10px;font-size:1.125rem;line-height:1}.header-actions{display:flex;flex-wrap:wrap;gap:8px}.page{display:flex;flex-direction:column;gap:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.card-warning{border-color:var(--warning);background:color-mix(in srgb,var(--warning) 12%,var(--surface))}.card-warning p{margin:0;font-size:.9rem}.card-header{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.card-header h3,.form-card h3{font-size:1rem;margin-bottom:12px}.form-card{display:flex;flex-direction:column;gap:12px}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}@media(min-width:640px){.stat-grid{grid-template-columns:repeat(4,1fr)}}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:4px}.stat-card.stat-accent{border-color:var(--accent);background:linear-gradient(145deg,var(--surface) 0%,rgba(34,197,94,.08) 100%)}.inline-stat{max-width:320px}.stat-label{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.stat-value{font-size:1.25rem}.money-negative{color:#fca5a5}.money-positive{color:#86efac}.muted{color:var(--muted);font-size:.875rem}.break-all{word-break:break-all}.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.list-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.list-row:last-child{border-bottom:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;border:1px solid transparent;font-size:.875rem;font-weight:600;cursor:pointer;text-decoration:none;transition:opacity .15s,transform .1s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:active:not(:disabled){transform:scale(.98)}.btn-primary{background:var(--accent);color:#052e16}.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--border)}.btn-danger{background:#ef444426;color:#fecaca;border-color:#ef444466}.btn-sm{padding:6px 10px;font-size:.75rem}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:.8125rem;color:var(--muted);font-weight:500}.input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:1rem}.input:focus{outline:2px solid rgba(34,197,94,.45);outline-offset:1px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em}.badge-draft{background:#f59e0b33;color:#fcd34d}.badge-confirmed,.badge-valid,.badge-active,.badge-paid{background:#22c55e33;color:#86efac}.badge-settled{background:#3b82f633;color:#93c5fd}.badge-cancelled,.badge-voided,.badge-inactive{background:#94a3b833;color:#cbd5e1}.badge-unpaid,.badge-partial{background:#ef444433;color:#fca5a5}.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}.data-table{width:100%;border-collapse:collapse;font-size:.875rem}.data-table th,.data-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border)}.data-table th{background:var(--surface-2);color:var(--muted);font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.04em}.data-table tr:last-child td{border-bottom:none}.session-list{display:flex;flex-direction:column;gap:10px}.session-card{display:block;color:inherit;text-decoration:none;transition:border-color .15s}.session-card:hover{border-color:var(--accent);text-decoration:none}.session-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.session-cost{margin-top:8px;font-weight:650;color:var(--accent)}.detail-grid{display:grid;grid-template-columns:minmax(100px,auto) 1fr;gap:8px 16px;margin:0}.detail-grid dt{color:var(--muted);font-size:.875rem}.detail-grid dd{margin:0}.detail-row{display:contents}.card-hint{margin:0 0 12px;font-size:.875rem}.checkbox-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;margin-bottom:16px}.checkbox-item{display:flex;align-items:center;gap:8px;padding:8px 10px;background:var(--bg);border-radius:8px;border:1px solid var(--border);cursor:pointer;font-size:.875rem}.checkbox-item-dependent{margin-left:20px;grid-column:1 / -1;max-width:calc(100% - 20px)}.member-indent{display:inline-block;padding-left:1.25rem;border-left:2px solid var(--border)}.action-row{display:flex;flex-wrap:wrap;gap:8px}.back-link{font-size:.875rem;color:var(--muted)}.state-box{text-align:center;padding:48px 24px;color:var(--muted)}.state-title{color:var(--text);font-weight:600;margin-bottom:8px}.state-hint{margin-bottom:16px}.state-error .state-title{color:#fca5a5}.spinner{width:32px;height:32px;margin:0 auto 12px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast{padding:12px 16px;border-radius:10px;font-size:.875rem;font-weight:500}.toast-success{background:#22c55e26;border:1px solid rgba(34,197,94,.35);color:#bbf7d0}.toast-error{background:#ef444426;border:1px solid rgba(239,68,68,.35);color:#fecaca}.qr-preview{margin-bottom:16px}.qr-preview img{max-width:200px;max-height:200px;border-radius:8px;border:1px solid var(--border);display:block;margin-bottom:8px}.config-hint{margin-bottom:12px;font-size:.8125rem;line-height:1.5}.sheets-status{margin-bottom:12px}.validation-errors{margin-bottom:12px;padding:10px 12px;border-radius:8px;background:#ef444414;border:1px solid rgba(239,68,68,.25)}.validation-errors .list{font-size:.8125rem;color:#fecaca}code{font-size:.8125rem;background:var(--bg);padding:2px 6px;border-radius:4px}