:root{--primary: #4f46e5;--primary-dark: #4338ca;--bg: #f8fafc;--card: #ffffff;--input-bg: #ffffff;--text: #1e293b;--muted: #64748b;--border: #e2e8f0;--danger: #ef4444;--success: #22c55e;--accent-bg: #eef2ff;--accent-text: #4338ca;color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0f172a;--card: #1e293b;--input-bg: #1e293b;--text: #f1f5f9;--muted: #94a3b8;--border: #334155;--accent-bg: #312e81;--accent-text: #c7d2fe;color-scheme:dark}}:root[data-theme=dark]{--bg: #0f172a;--card: #1e293b;--input-bg: #1e293b;--text: #f1f5f9;--muted: #94a3b8;--border: #334155;--accent-bg: #312e81;--accent-text: #c7d2fe;color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent}input,select,button,textarea{font-family:inherit;font-size:1rem;color:var(--text)}.material-symbols-outlined{font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 24;vertical-align:middle;line-height:1}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-content{flex:1;padding:16px 16px 96px;max-width:560px;width:100%;margin:0 auto}.page-loading{padding:40px;text-align:center;color:var(--muted)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(5,1fr);align-items:center;justify-items:center;background:var(--card);border-top:1px solid var(--border);padding:6px 8px calc(6px + env(safe-area-inset-bottom));z-index:20}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:.7rem;color:var(--muted);text-decoration:none;padding:6px 4px;border-radius:12px;width:100%}.nav-item.active{color:var(--primary);font-weight:600}.nav-icon{font-size:1.4rem}.fab{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;text-decoration:none;box-shadow:0 4px 14px #4f46e566;margin-top:-28px;line-height:1}.fab .material-symbols-outlined{font-size:30px}.top-settings-btn{position:fixed;top:calc(12px + env(safe-area-inset-top));right:12px;z-index:15;width:40px;height:40px;border-radius:50%;background:var(--card);color:var(--text);display:flex;align-items:center;justify-content:center;box-shadow:0 1px 4px #00000026;text-decoration:none}.top-settings-btn.active{color:var(--primary)}.auth-page{max-width:400px;margin:40px auto;padding:24px;text-align:center;position:relative}.back-btn{display:flex;align-items:center;gap:4px;font-size:.85rem;color:var(--muted);margin-bottom:12px}.auth-subtitle{color:var(--muted);margin-bottom:24px}.auth-form{display:flex;flex-direction:column;gap:12px}.auth-form input,.auth-form select{padding:14px;border:1px solid var(--border);border-radius:10px;background:var(--input-bg);width:100%;box-sizing:border-box}.password-field{position:relative}.password-field input{width:100%;padding-right:44px}.password-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:8px}.btn-primary{background:var(--primary);color:#fff;border:none;padding:14px;border-radius:10px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}.btn-primary:disabled{opacity:.6}.btn-secondary{background:transparent;border:1px solid var(--border);color:var(--text);padding:10px 14px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}.btn-full{width:100%;display:block}.btn-center{width:fit-content;margin:16px auto 0}.theme-toggle{display:flex;gap:8px}.theme-toggle .tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}.form-error{color:var(--danger);font-size:.9rem}.tabs{display:flex;gap:8px;margin-bottom:16px;justify-content:center}.tab{padding:10px 18px;border-radius:999px;border:1px solid var(--border);background:var(--card);cursor:pointer}.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.card{background:var(--card);border-radius:16px;padding:20px;margin-bottom:16px;box-shadow:0 1px 3px #0000000f}.settlement-tile{text-align:center}.settlement-tile .amount{font-size:2rem;font-weight:700;margin:8px 0}.settlement-tile .amount.settled{color:var(--success)}.settlement-tile .amount.owed{color:var(--danger)}.settlement-transactions{display:flex;flex-direction:column;gap:4px}.settlement-transactions .amount{font-size:1.3rem;margin:0}.suggestion-btn{background:none;border:none;font-family:inherit;cursor:pointer;border-radius:8px;padding:4px 8px}.suggestion-btn:hover,.suggestion-btn:focus-visible{background:var(--accent-bg)}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:8px;text-align:center}.summary-grid .label{font-size:.75rem;color:var(--muted)}.summary-grid .value{font-size:1.1rem;font-weight:600}.expense-form{display:flex;flex-direction:column;gap:16px}.amount-input{font-size:2.5rem;text-align:center;border:none;border-bottom:2px solid var(--border);padding:12px;background:transparent;width:100%}.amount-input:focus{outline:none;border-color:var(--primary)}.field{display:flex;flex-direction:column;gap:6px}.field+.field{margin-top:16px}.field label{font-size:.85rem;color:var(--muted);font-weight:600}.field input,.field select,.field textarea{width:100%;box-sizing:border-box;padding:12px;border:1px solid var(--border);border-radius:10px;background:var(--input-bg);color:var(--text)}.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.category-chip{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 4px;border-radius:12px;border:2px solid transparent;background:var(--bg);cursor:pointer;font-size:.7rem}.category-chip.selected{border-color:var(--primary);background:var(--accent-bg);color:var(--accent-text)}.category-chip .icon{font-size:1.4rem}.toggle-row{display:flex;flex-wrap:wrap;gap:10px}.toggle-row .toggle-btn{min-width:100px}.toggle-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:14px;border-radius:12px;border:2px solid var(--border);background:var(--card);color:var(--text);cursor:pointer;font-weight:600}.toggle-btn.selected{border-color:var(--primary);background:var(--accent-bg);color:var(--accent-text)}.split-options{display:flex;flex-direction:column;gap:8px}.split-option{padding:12px;border-radius:12px;border:2px solid var(--border);cursor:pointer}.split-option.selected{border-color:var(--primary);background:var(--accent-bg);color:var(--accent-text)}.exact-shares{display:flex;flex-direction:column;gap:10px;margin-top:8px}.exact-shares .field{flex:1}.split-slider{width:100%;height:8px;border-radius:999px;background:var(--border);-moz-appearance:none;appearance:none;-webkit-appearance:none;outline:none;margin:8px 0 4px}.split-slider::-webkit-slider-thumb{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--primary);border:3px solid var(--card);box-shadow:0 1px 4px #0000004d;cursor:pointer}.split-slider::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--primary);border:3px solid var(--card);box-shadow:0 1px 4px #0000004d;cursor:pointer}.split-slider-amounts{display:flex;gap:10px}.split-slider-amounts .field{flex:1}.filters{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}.filters select,.filters input{width:100%;box-sizing:border-box;padding:12px;border-radius:10px;border:1px solid var(--border);background:var(--input-bg);color:var(--text)}.expense-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--card);border-radius:12px;margin-bottom:8px;cursor:pointer}.expense-item .cat-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.expense-item .details{flex:1;min-width:0}.expense-item .title{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.expense-item .meta{display:flex;align-items:center;gap:4px;font-size:.8rem;color:var(--muted)}.expense-item .meta .material-symbols-outlined{font-size:1rem}.expense-item .amount-col{text-align:right}.expense-item .amount{font-weight:700}.expense-item .share{font-size:.75rem;color:var(--muted)}.settlement-item{cursor:pointer;background:var(--accent-bg)}.settlement-item .settlement-icon{background:transparent;color:var(--accent-text)}.settlement-item .title{color:var(--accent-text)}.empty-state{text-align:center;color:var(--muted);padding:40px 20px}.member-row{display:flex;align-items:center;gap:10px;padding:10px 0}.household-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--border)}.household-row:last-of-type{border-bottom:none}.household-row-main{display:flex;flex-direction:column;gap:2px}.badge-active{background:var(--accent-bg);color:var(--accent-text);font-size:.75rem;font-weight:600;padding:4px 10px;border-radius:999px}.section-divider{border:none;border-top:1px solid var(--border);margin:16px 0}.category-manage-row{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--border)}.category-manage-row-main{display:flex;align-items:center;gap:10px;flex:1;min-width:0;cursor:pointer;background:none;border:none;padding:0;text-align:left;color:inherit;font:inherit}.category-manage-row-main.editing{color:var(--primary);font-weight:600}.category-manage-row .icon{font-size:1.3rem}.category-manage-row .name{flex:1}.invite-code-row{display:flex;align-items:stretch;gap:8px;margin:8px 0}.invite-code-input{flex:1;min-width:0;font-size:1.4rem;font-weight:700;letter-spacing:3px;text-align:center;padding:12px;border-radius:10px;border:1px solid var(--border);background:var(--accent-bg);color:var(--accent-text)}.invite-link-input{flex:1;min-width:0;font-size:.85rem;padding:12px;border-radius:10px;border:1px solid var(--border);background:var(--input-bg);color:var(--text)}.invite-code-copy-btn{display:flex;align-items:center;justify-content:center;padding:0 16px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);cursor:pointer}.invite-code-hint{font-size:.8rem;color:var(--muted);margin-top:4px}.invite-code-hint.success{color:var(--success)}.invite-code-hint.error{color:var(--danger)}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0}.switch-row .switch-label{display:flex;flex-direction:column;gap:2px}.switch-desc{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--muted);margin:0}.switch-desc .material-symbols-outlined{font-size:1.1rem}.switch{position:relative;display:inline-block;width:48px;height:28px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.switch-track{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--border);border-radius:999px;cursor:pointer;transition:background .15s}.switch-track:before{content:"";position:absolute;width:22px;height:22px;left:3px;top:3px;background:#fff;border-radius:50%;transition:transform .15s}.switch input:checked+.switch-track{background:var(--primary)}.switch input:checked+.switch-track:before{transform:translate(20px)}.page-title{margin-top:0}.offline-banner{background:#fef3c7;color:#92400e;text-align:center;padding:8px;font-size:.85rem}.offline-banner--syncing{background:#dbeafe;color:#1e40af}.install-banner{display:flex;align-items:center;gap:10px;background:var(--accent-bg);color:var(--accent-text);padding:10px 12px;font-size:.85rem}.install-banner-text{flex:1;display:flex;align-items:center;gap:4px;flex-wrap:wrap}.install-banner-btn{padding:8px 14px;white-space:nowrap}.inline-icon{font-size:1rem}.modal-actions{display:flex;gap:10px}.modal-actions button{flex:1}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:flex;align-items:flex-end;justify-content:center;z-index:30}.modal-sheet{background:var(--card);width:100%;max-width:560px;max-height:90vh;overflow-y:auto;border-radius:20px 20px 0 0;padding:20px}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.confirm-sheet{max-width:400px;border-radius:20px;margin-bottom:24px;text-align:center}.confirm-icon{width:56px;height:56px;border-radius:50%;background:var(--accent-bg);color:var(--accent-text);display:flex;align-items:center;justify-content:center;margin:0 auto 12px}.confirm-icon .material-symbols-outlined{font-size:28px}.confirm-icon.danger{background:#fee2e2;color:var(--danger)}:root[data-theme=dark] .confirm-icon.danger{background:#ef44442e}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .confirm-icon.danger{background:#ef44442e}}.confirm-sheet h3{margin:0 0 8px}.confirm-message{color:var(--muted);margin:0 0 20px;font-size:.9rem}.icon-btn{background:none;border:none;font-size:1.4rem;cursor:pointer}.btn-danger{background:var(--danger);color:#fff;border:none;padding:12px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}