:root{
  --paper:#F6F2E7; --paper2:#EFE9D8; --ink:#20261F; --ink-soft:#5B6157;
  --green:#1F3D2B; --green2:#2E5940; --red:#A63D40; --line:#C9C0A8;
}
*{box-sizing:border-box;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Georgia,'Iowan Old Style',serif;}
.num{font-family:'Courier New',ui-monospace,monospace;}
a{color:var(--green2);}
header{padding:.9rem 1.2rem;border-bottom:2px solid var(--ink);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem;}
header h1{font-size:1.3rem;margin:0;}
header h1 span{color:var(--green2);}
.user-box{font-size:.85rem;color:var(--ink-soft);}
.user-box a{margin-left:.6rem;}
.topnav{display:flex;gap:0;border-bottom:1px solid var(--line);overflow-x:auto;background:var(--paper2);}
.topnav a{font-family:Georgia,serif;font-size:.95rem;color:var(--ink-soft);text-decoration:none;padding:.7rem 1.1rem;border-bottom:2px solid transparent;white-space:nowrap;}
.topnav a.active{color:var(--ink);border-bottom-color:var(--green2);font-weight:bold;}

/* ===== Sidebar layout ===== */
.layout{display:flex;align-items:flex-start;min-height:calc(100vh - 60px);}
.sidebar{width:220px;flex-shrink:0;background:var(--paper2);border-right:1px solid var(--line);padding:.6rem 0;position:sticky;top:0;align-self:flex-start;max-height:100vh;overflow-y:auto;}
.sidebar .nav-single{display:block;padding:.55rem 1rem;color:var(--ink-soft);text-decoration:none;font-size:.92rem;}
.sidebar .nav-single.active{color:var(--ink);font-weight:bold;background:var(--paper);border-left:3px solid var(--green2);}
.sidebar details{border-top:1px solid var(--line);}
.sidebar details:first-of-type{border-top:none;}
.sidebar summary{padding:.55rem 1rem;cursor:pointer;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;color:var(--ink-soft);list-style:none;display:flex;justify-content:space-between;align-items:center;}
.sidebar summary::-webkit-details-marker{display:none;}
.sidebar summary::after{content:'▸';font-size:.7rem;transition:transform .15s;}
.sidebar details[open] summary::after{transform:rotate(90deg);}
.sidebar details a{display:block;padding:.45rem 1rem .45rem 1.6rem;color:var(--ink-soft);text-decoration:none;font-size:.88rem;}
.sidebar details a.active{color:var(--ink);font-weight:bold;background:var(--paper);border-left:3px solid var(--green2);padding-left:calc(1.6rem - 3px);}
.sidebar details a:hover,.sidebar .nav-single:hover{background:var(--paper);}
.sidebar-toggle{display:none;background:none;border:1px solid var(--line);border-radius:3px;padding:.3rem .6rem;cursor:pointer;font-family:inherit;}
main{padding:1.2rem 1.5rem;flex:1;min-width:0;max-width:1100px;}

@media (max-width: 800px){
  .layout{flex-direction:column;}
  .sidebar{position:static;width:100%;max-height:none;display:none;border-right:none;border-bottom:1px solid var(--line);}
  .sidebar.open{display:block;}
  .sidebar-toggle{display:inline-block;}
  main{padding:1rem;}
}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:.8rem;margin-bottom:1.4rem;}
.card{background:var(--paper2);border:1px solid var(--line);border-radius:4px;padding:.8rem 1rem;}
.card .label{font-size:.78rem;color:var(--ink-soft);}
.card .val{font-size:1.35rem;margin-top:.2rem;}
.pos{color:var(--green2);} .neg{color:var(--red);}
h2{font-size:1.1rem;border-bottom:1px solid var(--line);padding-bottom:.4rem;margin-top:1.6rem;}
h3{font-size:1rem;margin:1.4rem 0 .5rem;}
h4{font-size:.9rem;margin:1rem 0 .3rem;color:var(--ink-soft);}
form.row{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;align-items:flex-end;}
form.row .field{display:flex;flex-direction:column;gap:.2rem;font-size:.78rem;color:var(--ink-soft);}
input,select{font-family:inherit;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:.4rem .5rem;border-radius:3px;font-size:.92rem;}
button.btn,input[type=submit]{background:var(--green);color:var(--paper);border:none;padding:.45rem .9rem;border-radius:3px;cursor:pointer;font-family:Georgia,serif;font-size:.92rem;}
button.btn:hover,input[type=submit]:hover{background:var(--green2);}
button.link{background:none;border:none;color:var(--red);cursor:pointer;font-size:.85rem;text-decoration:underline;padding:0;font-family:inherit;}
table{width:100%;border-collapse:collapse;font-size:.9rem;margin-bottom:1.2rem;}
th{text-align:left;font-weight:normal;color:var(--ink-soft);border-bottom:1px solid var(--ink);padding:.4rem .3rem;font-size:.8rem;}
td{padding:.4rem .3rem;border-bottom:1px solid var(--line);}
.bar-row{display:flex;align-items:center;gap:.6rem;margin-bottom:.5rem;font-size:.85rem;}
.bar-track{flex:1;background:var(--paper2);border:1px solid var(--line);height:14px;border-radius:3px;overflow:hidden;}
.bar-fill{height:100%;background:var(--green2);}
.bar-fill.over{background:var(--red);}
.empty{color:var(--ink-soft);font-style:italic;padding:1rem 0;}
.error{background:#F3DEDF;border:1px solid var(--red);color:var(--red);padding:.6rem .8rem;border-radius:4px;margin-bottom:1rem;}
.ok{background:#DEEAE0;border:1px solid var(--green2);color:var(--green);padding:.6rem .8rem;border-radius:4px;margin-bottom:1rem;}
.login-wrap{max-width:340px;margin:4rem auto;padding:1.5rem;background:var(--paper2);border:1px solid var(--line);border-radius:6px;}
.login-wrap h1{font-size:1.2rem;margin-top:0;}
.login-wrap form{display:flex;flex-direction:column;gap:.7rem;}

/* ===== Settings ===== */
.settings-section{background:var(--paper2);border:1px solid var(--line);border-radius:6px;padding:1rem 1.2rem;margin-bottom:1rem;}
.settings-section h3{margin-top:0;border-bottom:1px solid var(--line);padding-bottom:.4rem;}
.settings-hint{font-size:.8rem;color:var(--ink-soft);}
.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.8rem;}
.settings-grid label{display:flex;flex-direction:column;gap:.25rem;font-size:.8rem;color:var(--ink-soft);}
.settings-grid label.checkbox-label{flex-direction:row;align-items:center;gap:.4rem;font-size:.9rem;color:var(--ink);}

/* ===== Simple bar chart (no JS/library needed) ===== */
.chart{display:flex;align-items:flex-end;gap:1rem;height:160px;padding:.5rem 0 0;margin-bottom:1rem;}
.chart-bar{display:flex;flex-direction:column;align-items:center;flex:1;height:100%;justify-content:flex-end;gap:.3rem;}
.chart-bar .bar{width:100%;max-width:56px;border-radius:3px 3px 0 0;}
.chart-bar .bar.income{background:var(--green2);}
.chart-bar .bar.expense{background:var(--red);}
.chart-bar .bar-label{font-size:.72rem;color:var(--ink-soft);text-align:center;}
.chart-bar .bar-value{font-size:.72rem;font-family:'Courier New',ui-monospace,monospace;}
.chart-legend{display:flex;gap:1rem;font-size:.8rem;color:var(--ink-soft);margin-bottom:.6rem;}
.chart-legend span{display:inline-flex;align-items:center;gap:.3rem;}
.chart-legend i{width:10px;height:10px;border-radius:2px;display:inline-block;}