@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600;700&display=swap');
:root{--ink:#292a2c;--muted:#676767;--green:#3281ff;--green-dark:#2e57a9;--aqua:#009fff;--surface:#fff;--canvas:#f3f6fb;--line:#dfe7f3;--danger:#d95c5c;--shadow:0 10px 30px rgba(46,87,169,.10)}
*{box-sizing:border-box}html{font-family:'Open Sans',sans-serif;color:var(--ink);background:var(--canvas)}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit}.muted{color:var(--muted)}
.topbar{height:68px;background:var(--green-dark);color:white;display:flex;align-items:center;padding:0 max(18px,calc((100vw - 1120px)/2));gap:20px;position:sticky;top:0;z-index:10;box-shadow:0 4px 15px #1d468733}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700}.brand img{width:42px;height:42px;filter:brightness(0) invert(1)}.brand span{font-size:15px}.event-name{margin-left:auto;text-align:right;display:flex;flex-direction:column}.event-name small{color:#cfe2ff;font-size:10px;text-transform:uppercase;letter-spacing:.12em}.event-name strong{max-width:38vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.icon-button{border:0;background:#ffffff18;color:white;border-radius:50%;width:38px;height:38px;font-size:20px}.icon-button:hover{background:#ffffff2b}
.app-shell{max-width:1120px;margin:0 auto;padding:0 24px 60px}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);padding:22px 0 0;overflow:auto}.tab{border:0;background:transparent;color:var(--muted);padding:13px 18px;border-bottom:3px solid transparent;font-weight:700;white-space:nowrap}.tab.active{color:var(--green-dark);border-color:var(--green)}.panel{display:none;padding-top:32px}.panel.active{display:block}.section-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.section-head h1,.dialog-head h2{margin:2px 0 0;font-size:28px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--green-dark);font-size:11px;font-weight:700}
.primary{border:0;background:var(--green);color:#fff;border-radius:10px;padding:13px 18px;font-weight:700;box-shadow:0 5px 15px #2563a83b}.primary:hover{background:var(--green-dark)}.primary:focus-visible{outline:3px solid #8ec5ff;outline-offset:2px}.primary:disabled{opacity:.5;cursor:not-allowed}.compact{padding:10px 15px}.text-link{display:block;text-align:center;margin-top:20px;color:var(--green-dark);font-weight:700;text-decoration:none}
.expense-list{display:grid;gap:10px}.expense-card{display:grid;grid-template-columns:44px minmax(0,1fr) auto auto;align-items:center;gap:14px;background:var(--surface);padding:15px;border-radius:12px;box-shadow:var(--shadow)}.expense-icon,.avatar{width:42px;height:42px;border-radius:12px;background:#3281ff20;color:var(--green-dark);display:grid;place-items:center;font-weight:700}.expense-main,.expense-value{display:flex;flex-direction:column}.expense-main span,.expense-value span,.balance-card span{font-size:12px;color:var(--muted);margin-top:3px}.expense-value{text-align:right}.expense-actions{display:flex;align-items:center}.delete-button,.edit-button,.person-card button{border:0;background:transparent;color:#8b96a6;font-size:20px;padding:6px}.delete-button:hover,.person-card button:hover{color:var(--danger)}.edit-button:hover{color:var(--green)}
.empty{background:var(--surface);border:2px dashed var(--line);border-radius:16px;text-align:center;padding:70px 20px;color:var(--muted)}.empty span{font-size:44px;color:var(--green)}.empty h3{color:var(--ink);margin-bottom:5px}.empty p{margin:0}.empty.small{padding:30px}
.inline-form{display:flex;gap:10px;max-width:520px;margin-bottom:22px}.inline-form input{flex:1}.people-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}.person-card{background:#fff;border-radius:12px;padding:14px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow)}.person-card button{margin-left:auto}
.balance-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin-bottom:30px}.balance-card{display:flex;justify-content:space-between;align-items:center;background:#fff;padding:18px;border-radius:13px;box-shadow:var(--shadow);border-left:4px solid}.balance-card>div{display:flex;flex-direction:column}.balance-card.positive{border-color:var(--green)}.balance-card.positive b{color:var(--green-dark)}.balance-card.negative{border-color:#ea8a82}.balance-card.negative b{color:#c6534a}.settlement-list{display:grid;gap:10px}.settlement-list>div{display:grid;grid-template-columns:1fr auto 1fr auto;align-items:center;gap:12px;background:#fff;border-radius:12px;padding:16px;box-shadow:var(--shadow)}.settlement-list span{color:var(--muted)}
.share-card{background:#fff;padding:24px;border-radius:14px;box-shadow:var(--shadow);max-width:720px}.copy-row{display:flex;gap:8px}.copy-row input{flex:1;min-width:0}
.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#1e5799 0%,#2989d8 30%,#207cca 67%,#7db9e8 100%)}.auth-card{background:#fff;width:min(440px,100%);padding:36px;border-radius:18px;box-shadow:0 24px 70px #11172266}.auth-logo{display:block;width:76px;height:76px;background:var(--green);padding:14px;border-radius:17px;margin-bottom:22px}.auth-logo img{display:block;width:100%;height:100%;filter:brightness(0) invert(1)}.auth-card h1{margin:0 0 8px;font-size:29px}.stack{display:grid;gap:15px;margin-top:24px}.stack label{font-size:13px;font-weight:700}.stack input,.stack select,.inline-form input,.copy-row input{display:block;width:100%;margin-top:7px;border:1px solid #d8dde1;border-radius:9px;padding:12px;background:#fff;color:var(--ink);outline:none}.stack input:focus,.stack select:focus,.inline-form input:focus{border-color:var(--aqua);box-shadow:0 0 0 3px #57c8c526}.alert{background:#fff0ef;color:#a33b34;padding:11px 13px;border-radius:9px;margin-top:18px;font-size:13px}
dialog{border:0;border-radius:18px;padding:0;width:min(620px,calc(100% - 28px));box-shadow:0 25px 80px #1b202c66}dialog::backdrop{background:#20252dcc;backdrop-filter:blur(3px)}dialog form{padding:25px}.dialog-head{display:flex;justify-content:space-between;align-items:start}.close{border:0;background:#edf0f1;border-radius:50%;width:36px;height:36px;font-size:22px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}fieldset{border:1px solid var(--line);border-radius:12px;padding:15px}legend{font-size:13px;font-weight:700}.select-all{border:0;background:transparent;color:var(--green-dark);font-weight:700;padding:0 0 10px}.checks{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.checks label{font-weight:400}.checks input{width:auto;display:inline;margin:0 7px 0 0}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--ink);color:white;padding:11px 17px;border-radius:10px;opacity:0;pointer-events:none;transition:.2s;z-index:30}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:650px){.brand span{display:none}.topbar{height:60px;padding:0 14px}.brand img{width:38px;height:38px}.app-shell{padding:0 14px 40px}.tabs{padding-top:10px}.tab{padding:12px 13px}.panel{padding-top:22px}.section-head h1{font-size:24px}.expense-card{grid-template-columns:40px minmax(0,1fr) auto}.expense-icon{width:38px;height:38px}.expense-value{grid-column:2;text-align:left}.expense-actions{grid-column:3;grid-row:1/3;flex-direction:column}.settlement-list>div{grid-template-columns:1fr auto}.settlement-list span{display:none}.settlement-list b{text-align:right}.copy-row,.inline-form{flex-direction:column}.form-grid{grid-template-columns:1fr}.checks{grid-template-columns:1fr 1fr}.auth-card{padding:28px 22px}}