:root{--bg: #0b1120;--card: #131c31;--card-2: #1b2740;--line: #24314f;--text: #e6ecf7;--muted: #93a4c3;--accent: #34d399;--accent-ink: #04231a;--danger: #f87171;--radius: 16px;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.45 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,system-ui,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}button,input,select,textarea{font:inherit;color:inherit}.app{min-height:100%;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;padding:max(10px,env(safe-area-inset-top)) 14px 10px;background:#0b1120eb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.brand{font-size:18px;font-weight:700;letter-spacing:.2px;flex:1}.trip-title{flex:1;display:flex;flex-direction:column;overflow:hidden}.trip-title strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.content{flex:1;width:100%;max-width:620px;margin:0 auto;padding:14px 14px calc(96px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px}.tabs{position:sticky;top:52px;z-index:15;display:flex;gap:6px;padding:8px 14px;background:var(--bg);border-bottom:1px solid var(--line);justify-content:center}.tabs button{flex:1;max-width:180px;padding:8px 10px;border:0;border-radius:999px;background:transparent;color:var(--muted);font-weight:600}.tabs button.on{background:var(--card-2);color:var(--text)}.card{width:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;text-align:left;display:flex;flex-direction:column;gap:10px}.section-title{margin:4px 0 0;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);display:flex;justify-content:space-between}.muted{color:var(--muted)}.small{font-size:12.5px}.error{color:var(--danger);font-size:13.5px;margin:4px 0 0}.page-error{padding:24px}.trip-card{flex-direction:row;align-items:center;gap:12px;cursor:pointer}.trip-card-main{flex:1;display:flex;flex-direction:column;gap:3px;min-width:0}.trip-card-total{font-weight:700;color:var(--accent);white-space:nowrap}.day{display:flex;flex-direction:column;gap:8px}.expense{flex-direction:row;align-items:center;gap:12px;padding:12px 14px;cursor:pointer}.expense-icon{font-size:20px}.expense-main{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.expense-main strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.expense-amount{font-weight:700;white-space:nowrap}.paperclip{font-size:12px;opacity:.7}.summary{gap:8px}.cat-row{display:grid;grid-template-columns:1fr 90px auto;align-items:center;gap:10px;font-size:13.5px}.bar{height:6px;background:var(--card-2);border-radius:99px;overflow:hidden}.bar div{height:100%;background:var(--accent)}.cat-total{font-variant-numeric:tabular-nums}.balance-row{display:flex;align-items:center;gap:10px}.balance-name{flex:1;display:flex;flex-direction:column;min-width:0}.balance-net{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-weight:700;font-variant-numeric:tabular-nums}.balance-net.pos{color:var(--accent)}.balance-net.neg{color:var(--danger)}.mini-bar{display:block;width:70px;height:4px;background:var(--card-2);border-radius:99px;overflow:hidden}.mini-bar i{display:block;height:100%}.mini-bar i.pos{background:var(--accent)}.mini-bar i.neg{background:var(--danger)}.transfer,.settlement{display:flex;align-items:center;gap:10px;font-size:14px}.transfer span:first-child,.settlement span:first-child{flex:1}.transfer-amount{font-weight:700;font-variant-numeric:tabular-nums}.member-row{display:flex;align-items:center;gap:10px}.member-name{flex:1;display:flex;flex-direction:column;align-items:flex-start;background:none;border:0;padding:0;text-align:left}.add-member{display:flex;gap:8px;margin-top:4px}.add-member input{flex:1}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-weight:700;flex:none}input,select,textarea{width:100%;padding:11px 12px;background:var(--card-2);border:1px solid var(--line);border-radius:12px;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--accent)}textarea{resize:vertical}.amount-input{font-size:20px;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card-2);font-weight:600;cursor:pointer;text-decoration:none}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:transparent}.btn.ghost{background:transparent}.btn.danger{color:var(--danger)}.btn.tiny{padding:7px 11px;font-size:13px;border-radius:10px}.btn:disabled{opacity:.5}.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:50%;background:var(--card);cursor:pointer;flex:none}.icon-btn.small{width:30px;height:30px;font-size:12px}.fab{position:fixed;right:18px;bottom:calc(20px + env(safe-area-inset-bottom));width:58px;height:58px;border:0;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-size:30px;line-height:1;box-shadow:0 10px 24px #00000073;cursor:pointer;z-index:30}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:var(--card-2);font-size:13px;cursor:pointer}.chip.on{background:var(--accent);color:var(--accent-ink);border-color:transparent}.segmented{display:flex;background:var(--card-2);border:1px solid var(--line);border-radius:12px;overflow:hidden}.segmented button{flex:1;padding:10px;border:0;background:transparent;color:var(--muted);font-weight:600;cursor:pointer}.segmented button.on{background:var(--accent);color:var(--accent-ink)}.split-list{display:flex;flex-direction:column;gap:6px}.split-row{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:12px;background:transparent;opacity:.55;text-align:left;cursor:pointer}.split-row.on{opacity:1;border-color:var(--accent);background:#34d39914}.split-row:not(button){opacity:1;cursor:default}.split-name{flex:1}.split-amount{font-variant-numeric:tabular-nums;font-weight:600}.split-input{width:110px;padding:7px 9px;text-align:right}.split-check{font-size:13px;margin:0}.split-check.ok{color:var(--accent)}.split-check.warn{color:var(--danger)}.receipt-row{display:flex;gap:8px;flex-wrap:wrap}form{display:flex;flex-direction:column;gap:12px}.row{display:flex;gap:10px}.row>*{flex:1}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:12.5px;font-weight:600;color:var(--muted);display:flex;gap:6px}.field-label em{font-weight:400;font-style:normal;opacity:.7}.backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#04081299;display:flex;align-items:flex-end;justify-content:center}.sheet{width:100%;max-width:620px;max-height:92vh;background:var(--bg);border:1px solid var(--line);border-radius:22px 22px 0 0;display:flex;flex-direction:column;animation:rise .18s ease-out}@keyframes rise{0%{transform:translateY(24px);opacity:.6}to{transform:none;opacity:1}}.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 6px}.sheet-head h2{margin:0;font-size:17px}.sheet-body{overflow-y:auto;padding:8px 16px calc(20px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px}.login{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:24px;text-align:center}.login-logo{font-size:54px}.login h1{margin:0;font-size:30px;letter-spacing:-.5px}.login form{width:100%;max-width:320px;margin-top:18px}.empty{text-align:center;padding:42px 16px;color:var(--muted)}.empty-icon{font-size:38px}.empty-title{font-weight:600;color:var(--text);margin:10px 0 4px}.empty-hint{margin:0;font-size:13.5px}.spinner{width:26px;height:26px;margin:42px auto;border:3px solid var(--card-2);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}