:root{
  --text:#2C2C2B; --text-2:#7D7A75; --canvas:#FFFFFF; --soft:#F9F8F7;
  --surface-2:#F0EFED; --border:#E6E5E3;
  --blue:#2783DE; --blue-soft:#E5F2FC;
  --green:#46A171; --green-soft:#E8F1EC;
  --orange:#D5803B; --orange-soft:#FBEBDE;
  --red:#E56458; --red-soft:#FCE9E7;
  --nav-h:64px; --radius:12px;
  --shadow:0 1px 2px rgba(0,0,0,.05), 0 4px 12px rgba(0,0,0,.04);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root{
    --text:#FFFFFF; --text-2:rgba(255,255,255,.65); --canvas:#191919;
    --soft:#202020; --surface-2:#383836; --border:rgba(255,255,255,.20);
    --blue:#5E9FE8; --blue-soft:rgba(94,159,232,.12);
    --green:#72BC8F; --green-soft:rgba(114,188,143,.12);
    --orange:#DE9255; --orange-soft:rgba(222,146,85,.12);
    --red:#E97366; --red-soft:rgba(233,115,102,.12);
    --shadow:0 1px 2px rgba(0,0,0,.4);
  }
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--sans); font-size:16px; line-height:1.5;
  color:var(--text); background:var(--soft);
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;cursor:pointer}
input,select{font-family:inherit;font-size:16px;color:var(--text)}
#app{max-width:520px;margin:0 auto;min-height:100%;background:var(--soft);position:relative}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;padding-top:calc(14px + env(safe-area-inset-top));
  background:var(--canvas);border-bottom:1px solid var(--border);
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--blue),#1a5fb0);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px}
.brand-text span{font-size:12px;color:var(--text-2)}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--canvas);color:var(--text);
  display:flex;align-items:center;justify-content:center;
}
.icon-btn.ghost{border-color:transparent;background:transparent;color:var(--text-2)}
.icon-btn:active{background:var(--surface-2)}

/* Content */
.content{padding:16px;padding-bottom:calc(var(--nav-h) + 90px + env(safe-area-inset-bottom))}
.view{display:flex;flex-direction:column;gap:16px}
.hidden{display:none !important}

/* Balance card */
.balance-card{
  background:linear-gradient(135deg,var(--blue),#1a5fb0);
  color:#fff;border-radius:16px;padding:22px;
  box-shadow:0 8px 24px rgba(39,131,222,.28);
}
.balance-label{font-size:13px;opacity:.85}
.balance-value{display:block;font-size:32px;font-weight:700;margin-top:4px;letter-spacing:-.5px}
.balance-foot{margin-top:12px;font-size:12px;opacity:.8}

/* Month picker */
.month-picker{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--canvas);border:1px solid var(--border);
  border-radius:var(--radius);padding:6px 10px;
}
.month-picker strong{font-size:15px}

/* Stat grid */
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat-card{
  background:var(--canvas);border:1px solid var(--border);
  border-radius:var(--radius);padding:14px;
}
.stat-card.profit{grid-column:1 / -1}
.stat-cap{font-size:12px;color:var(--text-2);display:flex;align-items:center;gap:6px}
.stat-cap::before{content:"";width:8px;height:8px;border-radius:50%}
.stat-card.in .stat-cap::before{background:var(--green)}
.stat-card.out .stat-cap::before{background:var(--red)}
.stat-card.profit .stat-cap::before{background:var(--blue)}
.stat-num{display:block;font-size:20px;font-weight:700;margin-top:6px;letter-spacing:-.3px}
.stat-card.in .stat-num{color:var(--green)}
.stat-card.out .stat-num{color:var(--red)}

/* Panels */
.panel{background:var(--canvas);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.panel-head h2{font-size:15px;font-weight:600}
.link-btn{background:none;border:none;color:var(--blue);font-size:13px;font-weight:500}

/* Chart */
.chart-wrap{height:170px;width:100%}
.chart-wrap svg{width:100%;height:100%;overflow:visible}
.chart-legend{display:flex;gap:18px;margin-top:12px;font-size:12px;color:var(--text-2)}
.chart-legend i.dot{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px;vertical-align:middle}
.dot.in{background:var(--green)}
.dot.out{background:var(--red)}
.bar-label{font-size:10px;fill:var(--text-2)}

/* Transaction list */
.tx-list{list-style:none;display:flex;flex-direction:column}
.tx-group-head{font-size:12px;color:var(--text-2);font-weight:600;padding:14px 2px 6px;text-transform:uppercase;letter-spacing:.4px}
.tx-item{
  display:flex;align-items:center;gap:12px;padding:12px 4px;
  border-top:1px solid var(--border);cursor:pointer;min-height:44px;
}
.tx-list .tx-item:first-child{border-top:none}
.tx-ico{
  width:40px;height:40px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.tx-ico.in{background:var(--green-soft)}
.tx-ico.out{background:var(--red-soft)}
.tx-main{flex:1;min-width:0}
.tx-title{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tx-meta{font-size:12px;color:var(--text-2);margin-top:2px}
.tx-amt{font-size:14px;font-weight:600;white-space:nowrap}
.tx-amt.in{color:var(--green)}
.tx-amt.out{color:var(--red)}

/* Search & chips */
.search-box{display:flex;align-items:center;gap:8px;background:var(--canvas);border:1px solid var(--border);border-radius:var(--radius);padding:0 12px}
.search-box svg{color:var(--text-2);flex:none}
.search-box input{border:none;outline:none;background:none;width:100%;padding:12px 0}
.filter-chips{display:flex;gap:8px}
.chip{
  border:1px solid var(--border);background:var(--canvas);color:var(--text-2);
  border-radius:20px;padding:8px 16px;font-size:13px;font-weight:500;
}
.chip.active{background:var(--blue);border-color:var(--blue);color:#fff}

/* Empty */
.empty{text-align:center;padding:48px 20px;color:var(--text-2)}
.empty-emoji{font-size:40px;margin-bottom:12px}

/* Report */
.report-summary{background:var(--canvas);border:1px solid var(--border);border-radius:var(--radius);padding:8px 16px}
.rs-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);font-size:14px}
.rs-row:last-child{border-bottom:none}
.rs-row .pos{color:var(--green)}
.rs-row .neg{color:var(--red)}
.rs-row.total{font-size:16px}
.rs-row.total span{font-weight:600}
.rs-row.total strong{font-size:18px}
.cat-bars{display:flex;flex-direction:column;gap:14px}
.cat-row{display:flex;flex-direction:column;gap:6px}
.cat-top{display:flex;justify-content:space-between;font-size:13px}
.cat-top span{color:var(--text)}
.cat-top strong{font-weight:600}
.cat-track{height:8px;background:var(--surface-2);border-radius:6px;overflow:hidden}
.cat-fill{height:100%;border-radius:6px}
.cat-empty{color:var(--text-2);font-size:13px;text-align:center;padding:12px}

/* Buttons */
.btn-primary{background:var(--blue);color:#fff;border:none;border-radius:10px;padding:14px;font-size:15px;font-weight:600;flex:1;min-height:48px}
.btn-primary:active{opacity:.9}
.btn-secondary{background:var(--canvas);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:14px;font-size:15px;font-weight:600;min-height:48px}
.btn-secondary.full{width:100%}
.btn-danger{background:var(--red-soft);color:var(--red);border:none;border-radius:10px;padding:14px 18px;font-size:15px;font-weight:600;min-height:48px}

/* FAB */
.fab{
  position:fixed;right:calc(50% - 260px + 16px);
  bottom:calc(var(--nav-h) + 16px + env(safe-area-inset-bottom));
  width:58px;height:58px;border-radius:18px;border:none;
  background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(39,131,222,.4);
  display:flex;align-items:center;justify-content:center;z-index:30;
}
@media (max-width:551px){.fab{right:16px}}
.fab:active{transform:scale(.94)}

/* Bottom nav */
.bottom-nav{
  position:fixed;bottom:0;left:0;right:0;z-index:25;
  max-width:520px;margin:0 auto;height:calc(var(--nav-h) + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  display:flex;background:var(--canvas);border-top:1px solid var(--border);
}
.nav-item{
  flex:1;background:none;border:none;color:var(--text-2);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;font-weight:500;
}
.nav-item.active{color:var(--blue)}

/* Modal / sheet */
.modal-overlay{
  position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.4);
  display:flex;align-items:flex-end;justify-content:center;
}
.sheet{
  width:100%;max-width:520px;background:var(--canvas);
  border-radius:20px 20px 0 0;padding:8px 20px 24px;
  padding-bottom:calc(24px + env(safe-area-inset-bottom));
  max-height:92vh;overflow-y:auto;animation:slideUp .25s ease;
}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
.sheet-handle{width:40px;height:4px;border-radius:2px;background:var(--surface-2);margin:6px auto 12px}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.sheet-head h2{font-size:18px;font-weight:600}
.sheet-body{display:flex;flex-direction:column;gap:16px}
.type-toggle{display:flex;background:var(--surface-2);border-radius:10px;padding:4px;gap:4px}
.tt-btn{flex:1;border:none;background:none;padding:10px;border-radius:8px;font-size:14px;font-weight:600;color:var(--text-2)}
.tt-btn.active{background:var(--canvas);color:var(--text);box-shadow:var(--shadow)}
.tt-btn[data-type="in"].active{color:var(--green)}
.tt-btn[data-type="out"].active{color:var(--red)}
.field{display:flex;flex-direction:column;gap:6px}
.field>span{font-size:13px;font-weight:500;color:var(--text-2)}
.field>span .opt,.field .opt{font-style:normal;font-weight:400;color:var(--text-2);opacity:.7}
.field input,.field select{
  border:1px solid var(--border);border-radius:10px;padding:12px;background:var(--soft);outline:none;
}
.field input:focus,.field select:focus{border-color:var(--blue)}
.amount-input{display:flex;align-items:center;border:1px solid var(--border);border-radius:10px;background:var(--soft);padding:0 12px}
.amount-input:focus-within{border-color:var(--blue)}
.amount-input em{font-style:normal;color:var(--text-2);font-weight:600;margin-right:8px}
.amount-input input{border:none;background:none;padding:12px 0;width:100%;font-size:20px;font-weight:700}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.sheet-actions{display:flex;gap:12px;margin-top:8px}

/* Toast */
.toast{
  position:fixed;left:50%;transform:translateX(-50%);
  bottom:calc(var(--nav-h) + 90px);z-index:50;
  background:var(--text);color:var(--canvas);
  padding:12px 20px;border-radius:24px;font-size:14px;font-weight:500;
  opacity:0;pointer-events:none;transition:opacity .2s, transform .2s;white-space:nowrap;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px)}