:root{--bg:#f6f7f9;--panel:#ffffff;--panel-soft:#f1f4f8;--border:#d9e0ea;--text:#172033;--muted:#667085;--brand:#0f766e;--brand-dark:#115e59;--danger:#b42318;--credit:#047857;--debit:#b42318}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{border:0;cursor:pointer}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--border);background:var(--panel);padding:20px}.sidebar-top{margin-bottom:24px}.brand-group{display:flex;align-items:center;gap:10px}.brand-mark{display:grid;width:34px;height:34px;place-items:center;flex:0 0 auto;border-radius:10px;background:var(--brand);color:#fff;font-size:17px;font-weight:900}.brand{font-size:22px;font-weight:800}.user-name{margin-top:4px;color:var(--muted);font-size:13px}.logout-mobile{display:none}.nav{display:grid;grid-gap:8px;gap:8px}.nav a,.nav button{display:block;width:100%;border-radius:8px;padding:10px 12px;background:transparent;color:var(--muted);text-align:left}.nav a.active,.nav a:hover,.nav button:hover{background:var(--panel-soft);color:var(--text)}.nav a.active{font-weight:700}.logout-desktop{margin-top:10px}.main{min-width:0;padding:28px}.page-header{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:20px}.eyebrow{margin:0 0 4px;color:var(--muted);font-size:13px}.title{margin:0;font-size:28px;line-height:1.2}.grid{display:grid;grid-gap:14px;gap:14px}.stats{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px}.metric-label{color:var(--muted);font-size:13px;margin-bottom:6px}.metric-value{font-size:24px;font-weight:800}.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:14px}.page-actions{display:flex;flex-wrap:wrap;gap:10px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:26px 0 12px}.section-heading h2,.section-heading p{margin:0}.section-heading p{margin-top:4px}.input{width:100%;border:1px solid var(--border);background:#fff;color:var(--text);padding:10px 12px}.button,.input{border-radius:8px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:10px 14px;background:var(--brand);color:#fff;font-weight:700}.button:hover{background:var(--brand-dark)}.button.secondary{background:var(--panel-soft);color:var(--text)}.button.danger{background:var(--danger)}.button.danger:hover{background:#8f1d14}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px 14px;gap:12px 14px}.debt-list{max-height:340px;overflow-y:auto;padding-right:4px;overscroll-behavior:contain;scrollbar-width:thin}.debt-option{display:grid;grid-gap:8px;gap:8px;justify-items:start;width:100%;border-radius:8px;padding:10px 12px;color:var(--text);text-align:left}.debt-option-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;width:100%}.debt-category{display:inline-flex;align-items:center;min-height:26px;border-radius:999px;padding:4px 10px;background:var(--panel-soft);color:var(--brand-dark);font-size:14px;font-weight:700}.debt-amount{display:grid;grid-gap:2px;gap:2px;justify-items:end}.debt-amount>span{color:var(--muted);font-size:12px}.debt-amount strong{color:var(--debit);font-size:18px;line-height:1.1}.debt-option-meta{display:flex;flex-wrap:wrap;gap:4px 10px;color:var(--muted);font-size:14px;font-weight:400;line-height:1.35}.table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--border);border-radius:8px}table{width:100%;border-collapse:collapse}td,th{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}th{color:var(--muted);font-size:13px;font-weight:700}tr:last-child td{border-bottom:0}.muted{color:var(--muted)}.error{color:var(--danger);background:#fff1f0;border:1px solid #fecdca;border-radius:8px;padding:10px 12px}.success{color:var(--credit)}.debit{color:var(--debit)}.credit{color:var(--credit)}.login-page{display:grid;place-items:center;min-height:100vh;padding:24px}.login-card{width:min(420px,100%)}.form{display:grid;grid-gap:12px;gap:12px}.split{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px}@media (max-width:900px){.shell{grid-template-columns:1fr}.sidebar{position:-webkit-sticky;position:sticky;top:0;z-index:10;border-right:0;border-bottom:1px solid var(--border);padding:14px 18px}.sidebar-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}.nav{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}.nav::-webkit-scrollbar{display:none}.nav a,.nav button{width:auto;min-width:max-content;padding:9px 12px;text-align:center}.logout-desktop{display:none}.logout-mobile{display:inline-flex;align-items:center;min-height:36px;border-radius:8px;padding:8px 10px;background:var(--panel-soft);color:var(--text);font-weight:700}.split,.stats{grid-template-columns:1fr}.main{padding:18px 16px 32px}.page-header{align-items:stretch;flex-direction:column}.page-actions{display:grid;grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}}@media (max-width:520px){.sidebar-top{align-items:center;gap:8px;margin-bottom:10px}.page-actions{grid-template-columns:1fr}.main{padding:14px 12px 28px}.title{font-size:24px}.card{border-radius:10px;padding:14px}.metric-value{font-size:22px}.button{min-height:44px}.toolbar{align-items:stretch;flex-direction:column}.toolbar .button,.toolbar .input{width:100%}.debt-list{max-height:300px}.debt-option-top{gap:10px}.debt-amount strong{font-size:17px}.responsive-table{overflow:visible;border:0;background:transparent}.responsive-table table,.responsive-table tbody,.responsive-table td,.responsive-table tr{display:block;width:100%}.responsive-table thead{display:none}.responsive-table tr{margin-bottom:10px;overflow:hidden;border:1px solid var(--border);border-radius:10px;background:var(--panel)}.responsive-table td{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:42px;padding:9px 12px;white-space:normal}.responsive-table td:before{content:attr(data-label);color:var(--muted);font-size:12px;font-weight:700}.responsive-table td:last-child{border-bottom:0}}