:root{--bg:oklch(96% .012 45);--surface:oklch(99% .006 45);--surface-2:oklch(92.5% .015 45);--border:oklch(88% .015 45);--text:oklch(23% .02 45);--text-muted:oklch(52% .02 45);--accent:oklch(64% .19 15);--accent-text:oklch(99% .005 15);--accent-soft:oklch(93% .05 15);--positive:oklch(58% .14 190);--positive-soft:oklch(92% .045 190);--shadow:0 2px 10px oklch(30% .02 45/.08), 0 1px 2px oklch(30% .02 45/.05);--radius-sm:10px;--radius-md:14px;--radius-lg:20px;--radius-pill:999px}html[data-theme=dark]{--bg:oklch(19% .014 45);--surface:oklch(24% .015 45);--surface-2:oklch(30% .018 45);--border:oklch(34% .02 45);--text:oklch(94% .008 45);--text-muted:oklch(66% .015 45);--accent:oklch(68% .18 15);--accent-text:oklch(14% .01 15);--accent-soft:oklch(30% .06 15);--positive:oklch(68% .13 190);--positive-soft:oklch(27% .05 190);--shadow:0 2px 12px oklch(0% 0 0/.4)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:Manrope,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;transition:background .25s,color .25s}#root{justify-content:center;min-height:100%;display:flex}input,textarea,button{font-family:inherit}input:focus,textarea:focus,button:focus{outline:none}::placeholder{color:var(--text-muted)}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pop{0%{opacity:0;transform:scale(.85)}to{opacity:1;transform:scale(1)}}.shell{background:var(--bg);flex-direction:column;width:100%;max-width:430px;min-height:100vh;display:flex}.page{flex-direction:column;flex:1;display:flex}.topbar{border-bottom:1px solid var(--border);background:var(--surface);z-index:5;flex-shrink:0;justify-content:space-between;align-items:center;height:58px;padding:0 16px;display:flex;position:sticky;top:0}.topbar-left{align-items:center;gap:10px;min-width:0;display:flex}.topbar-title{color:var(--text);white-space:nowrap;text-overflow:ellipsis;font-size:18px;font-weight:800;overflow:hidden}.icon-btn{color:var(--text);cursor:pointer;background:0 0;border:none;align-items:center;padding:4px 6px 4px 0;font-size:20px;line-height:1;display:flex}.cta-bar{background:var(--surface);border-top:1px solid var(--border);flex-shrink:0;gap:10px;padding:14px 16px;display:flex;position:sticky;bottom:0}.content{flex-direction:column;flex:1;gap:22px;padding:16px;display:flex}.content.with-cta{padding-bottom:110px}.section-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:13px;font-weight:700}.form{flex-direction:column;gap:14px;width:100%;display:flex}.field{flex-direction:column;gap:8px;display:flex}.field label{color:var(--text-muted);font-size:13px;font-weight:600}input[type=text],input[type=tel],input[type=number],select{border-radius:var(--radius-sm);border:1.5px solid var(--border);background:var(--surface);width:100%;color:var(--text);padding:13px 14px;font-size:15px}button{cursor:pointer;border-radius:var(--radius-md);background:var(--accent);color:var(--accent-text);border:none;justify-content:center;align-items:center;gap:8px;padding:15px;font-size:15px;font-weight:700;display:flex}button.secondary{color:var(--text);border:1.5px solid var(--border);background:0 0}button.positive{border:1.5px solid var(--positive);background:var(--positive-soft);color:var(--positive)}button.link{color:var(--text-muted);background:0 0;border:none;padding:4px;font-size:13px;font-weight:600}button:disabled{opacity:.55;cursor:default}.spinner{border:2px solid;border-top-color:#0000;border-radius:50%;width:14px;height:14px;animation:.7s linear infinite spin}.muted{color:var(--text-muted)}.error-banner{background:var(--accent-soft);color:var(--accent);border-radius:var(--radius-sm);padding:12px 14px;font-size:13px;line-height:1.4}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:14px}.card-list{flex-direction:column;gap:8px;display:flex}.trip-card{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);cursor:pointer;align-items:center;gap:12px;padding:16px;display:flex}.avatar-stack{align-items:center;display:flex}.avatar-chip{background:var(--surface-2);border:1.5px solid var(--surface);width:26px;height:26px;color:var(--text);border-radius:50%;justify-content:center;align-items:center;font-size:11px;font-weight:700;display:flex}.avatar-chip.lg{background:var(--accent-soft);width:30px;height:30px;color:var(--accent);flex-shrink:0;font-size:12px}.checkbox-row{cursor:pointer;align-items:center;gap:12px;padding:8px 4px;display:flex}.checkbox-row input[type=checkbox]{width:20px;height:20px;accent-color:var(--accent);cursor:pointer}.share-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:center;gap:10px;padding:10px 12px;display:flex}.share-row.unchecked{opacity:.5}.share-row input[type=number]{border:1.5px solid var(--border);background:var(--bg);width:76px;color:var(--text);text-align:right;border-radius:8px;padding:8px;font-size:13px}.sum-bar{border-radius:10px;padding:10px 12px;font-size:12.5px;font-weight:600}.sum-bar.ok{background:var(--positive-soft);color:var(--positive)}.sum-bar.warn{background:var(--accent-soft);color:var(--accent)}.chip-row{gap:8px;padding-bottom:2px;display:flex;overflow-x:auto}.chip{border-radius:var(--radius-pill);cursor:pointer;white-space:nowrap;background:var(--surface);color:var(--text);border:1.5px solid var(--border);flex-shrink:0;padding:9px 16px;font-size:13px;font-weight:600}.chip.active{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.theme-track{border-radius:var(--radius-pill);background:var(--surface-2);border:1px solid var(--border);cursor:pointer;flex-shrink:0;width:48px;height:26px;position:relative}.theme-knob{border-radius:var(--radius-pill);background:var(--accent);width:20px;height:20px;color:var(--accent-text);justify-content:center;align-items:center;transition:transform .2s;display:flex;position:absolute;top:2px;left:2px}.theme-track.on .theme-knob{transform:translate(22px)}.theme-track svg{width:13px;height:13px}.view-toggle{background:var(--surface-2);border-radius:var(--radius-pill);gap:6px;width:fit-content;padding:3px;display:flex}.view-toggle button{border-radius:var(--radius-pill);color:var(--text-muted);background:0 0;padding:7px 14px;font-size:12.5px;font-weight:700}.view-toggle button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.debt-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);align-items:center;gap:10px;padding:12px 14px;display:flex}.debt-amount{color:var(--accent);margin-left:auto;font-size:15px;font-weight:800}.debt-amount.positive{color:var(--positive)}.even-card{background:var(--positive-soft);border-radius:var(--radius-lg);text-align:center;flex-direction:column;align-items:center;gap:6px;padding:24px;display:flex}.even-mark{border-radius:var(--radius-md);background:var(--positive);width:48px;height:48px;position:relative}.even-mark span{background:var(--bg);border-radius:3px;width:24px;height:4px;position:absolute;left:12px}.logo-mark{border-radius:var(--radius-lg);background:var(--accent);width:56px;height:56px;position:relative}.logo-mark span{background:var(--accent-text);border-radius:3px;width:28px;height:5px;position:absolute;left:10px}.empty-state{text-align:center;flex-direction:column;align-items:center;gap:16px;padding:56px 24px;display:flex}.empty-box{border-radius:var(--radius-lg);background:repeating-linear-gradient(135deg, var(--surface-2), var(--surface-2) 8px, var(--surface) 8px, var(--surface) 16px);border:1px solid var(--border);width:96px;height:96px}.dashed-btn{border-radius:var(--radius-md);border:1.5px dashed var(--border);color:var(--text-muted);background:0 0;padding:14px}.receipt-thumb{width:100px;height:100px;position:relative}.receipt-thumb img{object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--border);width:100%;height:100%}.receipt-thumb button{border:1px solid var(--border);background:var(--surface);width:24px;height:24px;color:var(--text);border-radius:50%;padding:0;font-size:13px;line-height:1;position:absolute;top:-8px;right:-8px}.photo-link{color:var(--accent);cursor:pointer;background:0 0;border:none;align-items:center;gap:6px;margin-top:8px;padding:0;font-size:12px;font-weight:600;display:inline-flex}.photo-modal-overlay{z-index:1000;background:oklch(15% .01 45/.82);justify-content:center;align-items:center;padding:32px;animation:.15s ease-out photo-modal-fade;display:flex;position:fixed;inset:0}@keyframes photo-modal-fade{0%{opacity:0}to{opacity:1}}.photo-modal-close{color:oklch(99% .005 15);cursor:pointer;background:oklch(100% 0 0/.12);border:none;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;display:flex;position:absolute;top:16px;right:16px}.photo-modal-close:hover{background:oklch(100% 0 0/.2)}.photo-modal-img{border-radius:var(--radius-md);max-width:100%;max-height:100%;box-shadow:0 20px 60px oklch(0% 0 0/.5)}