:root{--bg: #f4f6f8;--card: #ffffff;--text: #1c2430;--text-soft: #66707d;--border: #e4e8ed;--accent: #059669;--accent-soft: #d9f2e8;--accent-text: #04714f;--pending: #b45309;--pending-soft: #fdeed7;--danger: #c2410c;--shadow: 0 1px 3px rgba(20, 30, 40, .07), 0 4px 14px rgba(20, 30, 40, .05);--radius: 16px;--nav-height: 64px}@media(prefers-color-scheme:dark){:root{--bg: #11161c;--card: #1b222b;--text: #e8ecf1;--text-soft: #97a1ac;--border: #2a333e;--accent: #10b981;--accent-soft: #123c2f;--accent-text: #4ade9d;--pending: #f0a64a;--pending-soft: #3c2c14;--danger: #f97350;--shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 4px 14px rgba(0, 0, 0, .25)}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.45;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}.app{max-width:480px;margin:0 auto;min-height:100dvh}.page{padding:16px 16px calc(var(--nav-height) + env(safe-area-inset-bottom) + 24px)}.page-header{padding:12px 4px 16px}.page-header h1{margin:0;font-size:1.7rem;font-weight:750;letter-spacing:-.02em}.page-header p{margin:4px 0 0;color:var(--text-soft);font-size:.95rem}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:12px}.card-title{margin:0 0 10px;font-size:1.05rem;font-weight:700}.request-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px}.request-name{font-weight:700}.request-amount{font-size:1.25rem;font-weight:750;font-variant-numeric:tabular-nums}.request-description{margin:6px 0 0;font-size:1rem}.request-notes{margin:4px 0 0;color:var(--text-soft);font-size:.9rem}.request-meta{margin:8px 0 0;color:var(--text-soft);font-size:.82rem}.request-actions{display:flex;justify-content:space-between;align-items:center;margin-top:10px}.request-actions:empty{display:none}.paid-details{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:.9rem;color:var(--text-soft)}.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:.78rem;font-weight:700}.badge-pending{background:var(--pending-soft);color:var(--pending)}.badge-paid{background:var(--accent-soft);color:var(--accent-text)}.btn{border:none;border-radius:12px;padding:13px 18px;font-size:1rem;font-weight:650;font-family:inherit;cursor:pointer;transition:transform .05s ease,opacity .15s ease}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45;cursor:default}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--card);color:var(--text);border:1.5px solid var(--border)}.btn-small{padding:9px 16px;font-size:.92rem}.btn-block{width:100%;margin-top:6px}.btn-link{background:none;border:none;padding:6px 0;color:var(--accent-text);font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer}.form-card{display:flex;flex-direction:column;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field>span,.field-label{font-size:.85rem;font-weight:650;color:var(--text-soft)}input,textarea,select{width:100%;border:1.5px solid var(--border);border-radius:12px;padding:12px 14px;font-size:1rem;font-family:inherit;background:var(--bg);color:var(--text);-webkit-appearance:none;-moz-appearance:none;appearance:none}input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}textarea{resize:none}.amount-input{display:flex;align-items:center;border:1.5px solid var(--border);border-radius:12px;background:var(--bg);padding-left:14px}.amount-input span{color:var(--text-soft);font-weight:650}.amount-input input{border:none;background:none;padding-left:6px;font-size:1.15rem;font-weight:650}.amount-input:focus-within{outline:2px solid var(--accent);outline-offset:-1px}.amount-input input:focus{outline:none}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1.5px solid var(--border);background:var(--bg);color:var(--text);border-radius:999px;padding:9px 16px;font-size:.95rem;font-weight:600;font-family:inherit;cursor:pointer}.chip-active{background:var(--accent);border-color:var(--accent);color:#fff}.summary-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.summary-card{display:flex;flex-direction:column;gap:2px;margin-bottom:0}.summary-value{font-size:1.45rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.summary-label{font-size:.82rem;font-weight:650;color:var(--text-soft)}.summary-people ul{list-style:none;margin:8px 0 0;padding:0}.summary-people li{display:flex;justify-content:space-between;padding:7px 0;font-weight:600}.summary-people li+li{border-top:1px solid var(--border)}.summary-person-amount{font-variant-numeric:tabular-nums}.search-row{display:flex;gap:8px;margin-bottom:12px}.search-input{flex:1;background:var(--card)}.filter-toggle{white-space:nowrap;padding:10px 14px;font-size:.92rem}.filter-active{border-color:var(--accent);color:var(--accent-text)}.filter-card{display:flex;flex-direction:column;gap:12px}.filter-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}.result-summary{margin:0 4px 10px;color:var(--text-soft);font-size:.88rem;font-weight:600}.sheet-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0f1473;display:flex;align-items:flex-end;justify-content:center;z-index:50;animation:fade-in .15s ease}.sheet{background:var(--card);width:100%;max-width:480px;border-radius:20px 20px 0 0;padding:10px 20px calc(20px + env(safe-area-inset-bottom));max-height:85dvh;overflow-y:auto;display:flex;flex-direction:column;gap:12px;animation:slide-up .2s ease}.sheet-handle{width:40px;height:4px;border-radius:2px;background:var(--border);margin:4px auto 2px}.sheet h2{margin:0;font-size:1.25rem}.sheet-subtitle{margin:-6px 0 0;color:var(--text-soft);font-size:.92rem}.sheet-actions{display:grid;grid-template-columns:1fr 1.6fr;gap:10px;margin-top:4px}@keyframes slide-up{0%{transform:translateY(40px);opacity:.5}to{transform:translateY(0);opacity:1}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.bottom-nav{position:fixed;bottom:0;left:0;right:0;margin:0 auto;max-width:480px;height:calc(var(--nav-height) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--card);border-top:1px solid var(--border);display:flex;z-index:40}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;background:none;border:none;color:var(--text-soft);font-size:.72rem;font-weight:650;font-family:inherit;cursor:pointer}.nav-item svg{width:24px;height:24px}.nav-item.active{color:var(--accent-text)}.success-card{text-align:center;padding:32px 20px}.success-check{width:56px;height:56px;margin:0 auto 14px;border-radius:50%;background:var(--accent-soft);color:var(--accent-text);display:flex;align-items:center;justify-content:center}.success-check svg{width:30px;height:30px}.success-title{margin:0;font-size:1.2rem;font-weight:750}.success-detail{margin:6px 0 0;color:var(--text-soft)}.success-card .btn{margin-top:20px}.empty-card{text-align:center;padding:36px 20px}.empty-card p{margin:0;font-weight:700}.empty-detail{margin-top:4px!important;color:var(--text-soft);font-weight:400!important;font-size:.92rem}.status-message{text-align:center;color:var(--text-soft);padding:24px 0}.error{color:var(--danger);font-size:.92rem;margin:4px 0}.member-list{list-style:none;margin:0;padding:0}.member-list li{padding:9px 0;font-weight:600}.member-list li+li{border-top:1px solid var(--border)}.future-list{margin:0;padding-left:20px;color:var(--text-soft)}.future-list li{padding:3px 0}.hint{color:var(--text-soft);font-size:.9rem;margin:8px 0 0}.hint code{background:var(--bg);padding:2px 6px;border-radius:6px;font-size:.85em}