:root{color-scheme:light;--green:#195a4a;--green-dark:#124638;--mint:#e5eee8;--ink:#23302b;--muted:#6f7d75;--bg:#f6f7f4;--card:#fff;--line:#e6eae5;--orange:#e6a95b;--red:#b43e39;--shadow:0 12px 34px #173e3012;font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);min-height:100dvh}.app-shell{min-height:100dvh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:calc(env(safe-area-inset-top) + 14px) max(20px,env(safe-area-inset-right)) 12px max(20px,env(safe-area-inset-left));background:#f6f7f4ed;backdrop-filter:blur(16px);border-bottom:1px solid #e8ebe6}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--green);font-size:15px;font-weight:700;letter-spacing:.11em}.brand img{width:38px;height:38px;border-radius:11px}.brand small{font-size:11px;letter-spacing:.16em}.top-actions{display:flex;align-items:center;gap:7px}.trip-picker,.icon-button{border:0;background:transparent;color:var(--green);font-family:inherit;font-size:14px;font-weight:600;padding:10px 8px;cursor:pointer}.icon-button{font-size:24px}.main-content{width:min(100%,820px);margin:0 auto;padding:26px 20px calc(28px + env(safe-area-inset-bottom));flex:1}.loading,.empty{text-align:center;padding:12vh 0;color:var(--muted)}.empty img{width:min(240px,65vw);border-radius:32px;margin-bottom:28px}.empty h1{color:var(--ink);font-size:clamp(28px,7vw,42px);line-height:1.1;margin:0 0 12px}.empty p{max-width:480px;margin:0 auto 26px;color:var(--muted);line-height:1.6}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:20px}.page-heading h1{font-size:clamp(25px,6vw,34px);line-height:1.15;margin:0}.page-heading p{color:var(--muted);margin:7px 0 0}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;margin-bottom:13px;box-shadow:var(--shadow)}.card-title,.eyebrow{font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}.big-total{font-size:32px;font-weight:700;margin:5px 0}.subtle{color:var(--muted);font-size:13px}.row{display:flex;align-items:center;gap:12px}.between{justify-content:space-between}.expense-card h3{margin:0 0 5px;font-size:17px}.expense-meta{font-size:13px;color:var(--muted);line-height:1.5}.amount{font-size:17px;font-weight:700;white-space:nowrap}.category{display:inline-flex;align-items:center;background:var(--mint);color:var(--green);border-radius:99px;padding:5px 9px;font-size:12px;font-weight:600;margin-top:10px}.button{border:0;border-radius:14px;padding:14px 17px;background:var(--green);color:#fff;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;min-height:48px}.button:hover{background:var(--green-dark)}.button.secondary{background:var(--mint);color:var(--green)}.button.ghost{background:transparent;color:var(--green);border:1px solid var(--line)}.button.danger{background:#fff1ef;color:var(--red)}.button.small{padding:9px 12px;min-height:38px;font-size:13px}.wide{width:100%}.button-row{display:flex;gap:10px;flex-wrap:wrap}.bottom-nav{position:sticky;bottom:0;z-index:3;display:grid;grid-template-columns:repeat(4,1fr);padding:7px max(12px,env(safe-area-inset-right)) calc(7px + env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));background:#fffffff2;backdrop-filter:blur(16px);border-top:1px solid var(--line)}.bottom-nav button{border:0;background:none;padding:10px 3px;border-radius:12px;color:var(--muted);font-family:inherit;font-size:12px;font-weight:600}.bottom-nav button.active{color:var(--green);background:var(--mint)}.dialog{border:0;padding:0;border-radius:22px;width:min(560px,calc(100% - 26px));max-height:min(88dvh,850px);box-shadow:0 24px 80px #10251d40}.dialog::backdrop{background:#14211da6;backdrop-filter:blur(2px)}.dialog-form{position:relative;padding:25px;max-height:88dvh;overflow:auto}.dialog-close{position:absolute;right:13px;top:8px;width:38px;height:38px;border:0;background:transparent;font-size:28px;color:var(--muted);cursor:pointer}.dialog h2{font-size:23px;margin:0 40px 8px 0}.dialog p{color:var(--muted);line-height:1.5;margin:0 0 18px}.field{display:grid;gap:7px;margin:14px 0;color:var(--ink);font-weight:600;font-size:13px}.field input,.field select,.field textarea,.input{width:100%;border:1px solid #d9dfd9;background:#fff;border-radius:12px;padding:12px 13px;font-family:inherit;font-size:15px;font-weight:400;color:var(--ink);outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px #195a4a1b}.field-help{font-size:12px;color:var(--muted);font-weight:400}.check-list{display:grid;gap:8px}.person-check{display:grid;grid-template-columns:auto 1fr minmax(90px,130px) 53px;align-items:center;gap:9px;padding:9px 10px;border:1px solid var(--line);border-radius:12px;font-size:14px}.person-check input[type=checkbox],.person-check input[type=radio]{accent-color:var(--green);width:18px;height:18px}.person-check input[type=number]{width:100%;padding:8px 9px;border:1px solid var(--line);border-radius:9px}.segment{display:grid;grid-template-columns:1fr 1fr;gap:5px;background:#eff1ed;padding:5px;border-radius:13px;margin:11px 0}.segment button{border:0;background:transparent;color:var(--muted);padding:11px 5px;border-radius:10px;font-family:inherit;font-size:13px;font-weight:600}.segment button.active{color:var(--green);background:white;box-shadow:0 2px 8px #163e2e14}.chart-wrap{display:grid;grid-template-columns:190px 1fr;align-items:center;gap:20px}.pie{width:190px;aspect-ratio:1;border-radius:50%;position:relative;background:conic-gradient(var(--green) 0 100%);display:grid;place-items:center}.pie::after{content:'';position:absolute;width:98px;aspect-ratio:1;border-radius:50%;background:white}.pie-center{z-index:1;text-align:center;font-size:12px;color:var(--muted)}.pie-center b{display:block;color:var(--ink);font-size:17px}.legend{display:grid;gap:12px}.legend-item{display:grid;grid-template-columns:12px 1fr auto;gap:8px;align-items:center;font-size:13px}.swatch{width:10px;height:10px;border-radius:50%}.progress{height:7px;background:#edf0ec;border-radius:99px;overflow:hidden;margin-top:7px}.progress span{display:block;height:100%;border-radius:99px}.member-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.member-row:last-child{border:0}.member-name{font-weight:600}.badge{font-size:11px;color:var(--green);background:var(--mint);padding:5px 8px;border-radius:99px}.balance-positive{color:var(--green);font-weight:600}.balance-negative{color:var(--red);font-weight:600}.payment-pending{border-left:3px solid var(--orange)}.toast{position:fixed;z-index:9;bottom:calc(82px + env(safe-area-inset-bottom));left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:.2s;background:#24332d;color:#fff;border-radius:12px;padding:12px 16px;max-width:calc(100% - 32px);font-size:14px;box-shadow:var(--shadow)}.toast.show{opacity:1;transform:translate(-50%,0)}.error{color:var(--red);font-size:13px;margin-top:9px}.divider{height:1px;background:var(--line);margin:16px 0}.trip-list{display:grid;gap:8px}.trip-item{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px;text-align:left;color:var(--ink);font-family:inherit;font-size:15px;font-weight:500;cursor:pointer}.trip-item.selected{border-color:var(--green);background:var(--mint)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.text-link{border:0;background:transparent;color:var(--green);font-family:inherit;font-size:14px;font-weight:600;padding:8px;cursor:pointer}.notice{border-radius:13px;background:#f0f3ef;padding:13px;color:var(--muted);font-size:13px;line-height:1.5}.code{font-family:ui-monospace,monospace;font-size:18px;letter-spacing:.04em;overflow-wrap:anywhere;background:#f1f3f0;padding:15px;border-radius:12px;color:var(--green);font-weight:700}
@media(max-width:560px){.main-content{padding:21px 15px calc(24px + env(safe-area-inset-bottom))}.topbar{padding-left:max(15px,env(safe-area-inset-left));padding-right:max(15px,env(safe-area-inset-right))}.chart-wrap{grid-template-columns:1fr;justify-items:center}.legend{width:100%}.person-check{grid-template-columns:auto 1fr minmax(80px,115px) 45px}.dialog-form{padding:23px 18px}.two-col{grid-template-columns:1fr}.page-heading .button{min-width:max-content}}