:root{
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE1;
  --ink:#1E2A22;
  --ink-soft:#5B6960;
  --accent:#2F6F5E;
  --accent-ink:#F4FBF8;
  --accent-soft:#DCEAE4;
  --warn:#B5652A;
  --warn-soft:#F4E3D3;
  --border:#E3DFD3;
  --shadow: 0 1px 2px rgba(30,42,34,0.06), 0 6px 20px -8px rgba(30,42,34,0.18);
  color-scheme: light;
  --series-1:#2a78d6;
  --series-2:#eb6834;
  --series-3:#1baf7a;
  --series-4:#eda100;
  --series-5:#e87ba4;
  --series-6:#008300;
  --series-7:#4a3aa7;
  --series-8:#e34948;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#111A15;
    --surface:#182420;
    --surface-2:#1F2E27;
    --ink:#ECE9DF;
    --ink-soft:#9AAB9F;
    --accent:#6FC1A4;
    --accent-ink:#0E1A15;
    --accent-soft:#20342C;
    --warn:#E3A468;
    --warn-soft:#3A2A1C;
    --border:#28372F;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 10px 24px -10px rgba(0,0,0,0.5);
    --series-1:#3987e5;
    --series-2:#d95926;
    --series-3:#199e70;
    --series-4:#c98500;
    --series-5:#d55181;
    --series-6:#008300;
    --series-7:#9085e9;
    --series-8:#e66767;
  }
}
:root[data-theme="dark"]{
  --bg:#111A15;
  --surface:#182420;
  --surface-2:#1F2E27;
  --ink:#ECE9DF;
  --ink-soft:#9AAB9F;
  --accent:#6FC1A4;
  --accent-ink:#0E1A15;
  --accent-soft:#20342C;
  --warn:#E3A468;
  --warn-soft:#3A2A1C;
  --border:#28372F;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 10px 24px -10px rgba(0,0,0,0.5);
  --series-1:#3987e5;
  --series-2:#d95926;
  --series-3:#199e70;
  --series-4:#c98500;
  --series-5:#d55181;
  --series-6:#008300;
  --series-7:#9085e9;
  --series-8:#e66767;
}

*{ box-sizing:border-box; }
[hidden]{ display:none !important; }
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Public Sans', system-ui, sans-serif;
  display:flex;
  justify-content:center;
}
.app{
  width:100%;
  max-width:480px;
  min-height:100%;
  display:flex;
  flex-direction:column;
  background:var(--bg);
}

/* ---------- header ---------- */
header.top{
  position:sticky;
  top: env(safe-area-inset-top, 0px);
  z-index:20;
  background:var(--bg);
  padding: 18px 20px 14px;
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  border-bottom:1px solid var(--border);
}
header.top h1{
  font-family:'Fraunces', serif;
  font-optical-sizing:auto;
  font-weight:600;
  font-size:1.5rem;
  margin:0;
  letter-spacing:-0.01em;
}
header.top .gear{
  background:none;
  border:none;
  color:var(--ink-soft);
  font-size:1.15rem;
  cursor:pointer;
  padding:6px;
  line-height:1;
}
.demo-note{
  font-size:0.72rem;
  color:var(--ink-soft);
  padding: 8px 20px 0;
}

main{
  flex:1;
  padding: 18px 20px 100px;
  display:flex;
  flex-direction:column;
  gap:22px;
}

section.panel{ display:none; flex-direction:column; gap:20px; }
section.panel.active{ display:flex; }

h2.section-title{
  font-family:'Fraunces', serif;
  font-weight:500;
  font-size:1.05rem;
  margin: 0;
  color:var(--ink);
}

/* ---------- cards ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px;
  box-shadow:var(--shadow);
}

/* ---------- form ---------- */
.field{ display:flex; flex-direction:column; gap:6px; }
.field label{
  font-size:0.74rem;
  text-transform:uppercase;
  letter-spacing:0.06em;
  color:var(--ink-soft);
  font-weight:600;
}
input, select{
  font-family:inherit;
  font-size:0.95rem;
  color:var(--ink);
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:9px;
  padding:10px 12px;
  width:100%;
}
input:focus, select:focus, button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:1px;
}
input[type="number"]{ font-family:'IBM Plex Mono', monospace; }

.form-grid{ display:flex; flex-direction:column; gap:14px; }
.row-2{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }

.segmented{
  display:flex;
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:9px;
  padding:3px;
  gap:3px;
}
.segmented button{
  flex:1;
  border:none;
  background:transparent;
  padding:8px 6px;
  border-radius:7px;
  font-size:0.86rem;
  font-family:inherit;
  color:var(--ink-soft);
  cursor:pointer;
}
.segmented button.selected{
  background:var(--accent);
  color:var(--accent-ink);
  font-weight:600;
}

/* ---------- compact split row (estilo Splitwise) ---------- */
#splitSummaryRow{
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:9px;
  padding:10px 12px;
  cursor:pointer;
  text-align:left;
  width:100%;
  font-family:inherit;
}
#splitSummaryRow.show{ display:flex; }
#splitSummaryRow .label-text{
  font-size:0.88rem;
  color:var(--ink);
  line-height:1.3;
}
#splitSummaryRow .chevron{
  color:var(--ink-soft);
  font-size:0.8rem;
  flex-shrink:0;
}

.split-option{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  width:100%;
  background:none;
  border:none;
  border-bottom:1px solid var(--border);
  padding:13px 2px;
  text-align:left;
  font-family:inherit;
  font-size:0.92rem;
  color:var(--ink);
  cursor:pointer;
}
.split-option:last-of-type{ border-bottom:none; }
.split-option .check{
  color:var(--accent);
  font-size:1rem;
  opacity:0;
  flex-shrink:0;
}
.split-option.selected .check{ opacity:1; }

#advancedSplit{ display:none; flex-direction:column; gap:14px; padding-top:4px; }
#advancedSplit.show{ display:flex; }
#owedByField{ display:none; }
#owedByField.show{ display:flex; }

.btn-primary{
  background:var(--accent);
  color:var(--accent-ink);
  border:none;
  border-radius:10px;
  padding:13px;
  font-size:0.98rem;
  font-weight:600;
  font-family:inherit;
  cursor:pointer;
  width:100%;
}
.btn-primary:active{ transform: translateY(1px); }
.btn-ghost{
  background:none;
  border:1px solid var(--border);
  color:var(--ink-soft);
  border-radius:9px;
  padding:9px 12px;
  font-family:inherit;
  font-size:0.84rem;
  cursor:pointer;
}

/* ---------- expense rows ---------- */
.expense-row{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 0;
  border-bottom:1px solid var(--border);
  cursor:pointer;
}
.expense-row:last-child{ border-bottom:none; }
.expense-row .chevron{ color:var(--ink-soft); font-size:0.85rem; flex-shrink:0; }
.settlement-row{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 0;
  border-bottom:1px solid var(--border);
}
.settlement-row:last-child{ border-bottom:none; }

/* ---------- barra de filtros (fecha / tipo) ---------- */
.filter-bar{ margin-bottom:2px; }
.day-row{ display:flex; align-items:center; gap:5px; margin-top:6px; }
.day-row input{ flex:1; min-width:0; }
.day-row .icon-btn{ padding:5px; font-size:0.95rem; flex-shrink:0; border:1px solid var(--border); border-radius:7px; }

/* ---------- lista de movimientos (sin scroll horizontal) ---------- */
.ledger-row{
  display:flex; align-items:center; gap:10px;
  padding:11px 0; border-bottom:1px solid var(--border);
  cursor:pointer;
}
.ledger-row:last-child{ border-bottom:none; }
.ledger-row:not([data-id]){ cursor:default; }
.ledger-date{
  display:flex; flex-direction:column; align-items:center;
  width:30px; flex-shrink:0; line-height:1.15;
}
.ledger-date .mon{ font-size:0.64rem; text-transform:uppercase; color:var(--ink-soft); letter-spacing:0.02em; }
.ledger-date .day{ font-size:0.98rem; font-weight:600; font-variant-numeric:tabular-nums; }
.ledger-dot{ width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.ledger-main{ flex:1; min-width:0; }
.ledger-title{
  font-size:0.9rem; font-weight:500;
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.ledger-sub{
  font-size:0.74rem; color:var(--ink-soft); margin-top:1px;
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.ledger-right{ text-align:right; flex-shrink:0; }
.ledger-status{
  font-size:0.68rem; font-weight:600;
}
.ledger-status.positive{ color:var(--accent); }
.ledger-status.negative{ color:var(--warn); }
.ledger-amount{
  font-family:'IBM Plex Mono', monospace; font-variant-numeric: tabular-nums;
  font-weight:600; font-size:0.92rem; white-space:nowrap;
}
.ledger-amount.positive{ color:var(--accent); }
.ledger-amount.negative{ color:var(--warn); }
.expense-cat-dot{
  width:8px; height:8px; border-radius:50%;
  background:var(--accent);
  flex-shrink:0;
}
.expense-main{ flex:1; min-width:0; }
.expense-title{ font-size:0.92rem; font-weight:500; }
.expense-sub{ font-size:0.76rem; color:var(--ink-soft); margin-top:1px; }
.expense-amount{
  font-family:'IBM Plex Mono', monospace;
  font-variant-numeric: tabular-nums;
  font-size:0.94rem;
  font-weight:600;
  white-space:nowrap;
}
.icon-btn{
  background:none; border:none; color:var(--ink-soft);
  font-size:1.05rem; cursor:pointer; padding:6px; line-height:1;
}
.detail-header{ display:flex; justify-content:space-between; align-items:center; }
.detail-actions{ display:flex; gap:4px; }
.detail-cat{
  font-size:0.78rem; text-transform:uppercase; letter-spacing:0.06em;
  color:var(--ink-soft); margin-top:4px;
}
.detail-amount{
  font-family:'Fraunces', serif; font-weight:600; font-size:2.1rem;
  font-variant-numeric: tabular-nums;
}
.detail-meta{ font-size:0.8rem; color:var(--ink-soft); margin-top:2px; }
.detail-breakdown{
  display:flex; flex-direction:column; gap:8px;
  border-top:1px solid var(--border);
  padding-top:14px;
}
.detail-breakdown .line{
  display:flex; justify-content:space-between;
  font-size:0.92rem;
}
.detail-breakdown .line .amt{
  font-family:'IBM Plex Mono', monospace;
  font-variant-numeric: tabular-nums;
}
#cancelEditBtn{ margin-top:-6px; }
.empty-state{
  color:var(--ink-soft);
  font-size:0.86rem;
  text-align:center;
  padding: 18px 0;
}

/* ---------- balance ---------- */
.balance-hero{
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:6px;
  padding: 8px 0 4px;
}
.balance-hero .amount{
  font-family:'Fraunces', serif;
  font-weight:600;
  font-size:2.1rem;
  font-variant-numeric: tabular-nums;
}
.balance-hero .caption{ font-size:0.86rem; color:var(--ink-soft); }
.pill{
  display:inline-block;
  font-size:0.72rem;
  font-weight:600;
  padding:3px 9px;
  border-radius:999px;
  background:var(--accent-soft);
  color:var(--accent);
}
.pill.warn{ background:var(--warn-soft); color:var(--warn); }

/* ---------- gráfico de torta por categoría ---------- */
.donut-wrap{ display:flex; flex-direction:column; align-items:center; gap:18px; }
.donut-svg-holder{ position:relative; width:168px; height:168px; flex-shrink:0; }
.donut-svg{ width:100%; height:100%; }
.donut-center{
  position:absolute; inset:0;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
}
.donut-center-amt{
  font-family:'Fraunces', serif; font-weight:600; font-size:1.1rem;
  font-variant-numeric: tabular-nums;
}
.donut-center-label{
  font-size:0.66rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--ink-soft);
}
.legend-list{ width:100%; display:flex; flex-direction:column; }
.legend-row{
  display:flex; align-items:center; gap:9px;
  padding:8px 0; border-bottom:1px solid var(--border);
  font-size:0.86rem;
}
.legend-row:last-child{ border-bottom:none; }
.legend-row.clickable{ cursor:pointer; margin:0 -8px; padding-left:8px; padding-right:8px; border-radius:8px; }
.legend-row.clickable.selected{ background:var(--surface-2); }
.legend-row.total-legend-row{ font-weight:600; border-bottom-width:2px; }
.legend-row.total-legend-row .legend-name,
.legend-row.total-legend-row .legend-amt{ color:var(--ink); }
.legend-dot{ width:10px; height:10px; border-radius:50%; flex-shrink:0; }
.legend-name{ flex:1; min-width:0; }
.legend-pct{ font-size:0.76rem; color:var(--ink-soft); width:34px; text-align:right; flex-shrink:0; }
.legend-amt{
  font-family:'IBM Plex Mono', monospace; font-variant-numeric: tabular-nums;
  width:76px; text-align:right; flex-shrink:0;
}

/* ---------- bottom nav ---------- */
nav.tabbar{
  position:fixed;
  bottom:0; left:0; right:0;
  display:flex;
  justify-content:center;
  background:var(--bg);
  border-top:1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  z-index:30;
}
nav.tabbar .inner{
  width:100%; max-width:480px;
  display:flex;
}
nav.tabbar button{
  flex:1;
  background:none;
  border:none;
  font-family:inherit;
  color:var(--ink-soft);
  padding:10px 4px 8px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  font-size:0.68rem;
  cursor:pointer;
  letter-spacing:0.01em;
}
nav.tabbar button .icon{ font-size:1.15rem; line-height:1; }
nav.tabbar button.active{ color:var(--accent); font-weight:600; }

/* ---------- toast ---------- */
#toast{
  position:fixed;
  left:50%;
  bottom: calc(74px + env(safe-area-inset-bottom, 0px));
  transform:translateX(-50%) translateY(12px);
  background:var(--ink);
  color:var(--bg);
  padding:10px 18px;
  border-radius:99px;
  font-size:0.84rem;
  opacity:0;
  pointer-events:none;
  transition: opacity .2s ease, transform .2s ease;
  z-index:40;
  white-space:nowrap;
}
#toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }

/* ---------- modal ---------- */
.modal-backdrop{
  position:fixed; inset:0;
  background:rgba(15,20,17,0.45);
  display:flex; align-items:flex-end; justify-content:center;
  z-index:50;
}
.modal-backdrop[hidden]{ display:none; }
.modal-sheet{
  background:var(--surface);
  width:100%; max-width:480px;
  border-radius:18px 18px 0 0;
  padding:22px 20px calc(22px + env(safe-area-inset-bottom, 0px));
  display:flex; flex-direction:column; gap:16px;
  box-shadow:var(--shadow);
}
.modal-sheet.scrollable{ max-height:82vh; overflow-y:auto; }
.modal-sheet h3{
  font-family:'Fraunces', serif;
  font-weight:600;
  font-size:1.15rem;
  margin:0;
}
.modal-sheet p.hint{ font-size:0.82rem; color:var(--ink-soft); margin:-8px 0 0; }
.modal-actions{ display:flex; gap:10px; margin-top:4px; }
.modal-actions .btn-ghost{ flex:1; text-align:center; }
.modal-actions .btn-primary{ flex:1; }

@media (max-width:400px){
  .row-2{ grid-template-columns:1fr; }
}

/* ---------- cuenta / grupo ---------- */
.settings-section{
  display:flex;
  flex-direction:column;
  gap:12px;
  border-top:1px solid var(--border);
  padding-top:16px;
}
.settings-section h4{
  font-family:'Fraunces', serif;
  font-weight:500;
  font-size:1rem;
  margin:0;
}
.invite-code{
  font-family:'IBM Plex Mono', monospace;
  font-size:1.35rem;
  letter-spacing:0.12em;
  font-weight:600;
  background:var(--accent-soft);
  color:var(--ink);
  border-radius:9px;
  padding:10px 12px;
  text-align:center;
  user-select:all;
}

.auth-screen{
  position:fixed; inset:0;
  z-index:60;
  background:var(--bg);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
}
.auth-screen[hidden]{ display:none; }
.auth-card{
  width:100%;
  max-width:400px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.auth-card .hint{ font-size:0.85rem; color:var(--ink-soft); margin:-6px 0 0; }
.auth-msg{ font-size:0.85rem; color:var(--warn); margin:0; min-height:1em; }
.auth-msg.ok{ color:var(--accent); }

/* ---------- pantallas completas (detalle) ---------- */
.modal-backdrop.fullscreen{
  background:var(--bg);
  align-items:stretch;
}
.modal-backdrop.fullscreen .modal-sheet{
  background:var(--bg);
  height:100%;
  max-height:none;
  border-radius:0;
  box-shadow:none;
  overflow-y:auto;
  padding-top:0;
}
.modal-backdrop.fullscreen .detail-header{
  position:sticky;
  top:0;
  z-index:1;
  background:var(--bg);
  margin:0 -20px;
  padding:calc(12px + env(safe-area-inset-top, 0px)) 12px 10px;
  border-bottom:1px solid var(--border);
}
.back-btn{
  background:none;
  border:none;
  color:var(--accent);
  font-family:inherit;
  font-size:1rem;
  font-weight:600;
  padding:8px;
  cursor:pointer;
}

.btn-google{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  background:var(--surface);
  color:var(--ink);
  border:1px solid var(--border);
  border-radius:9px;
  padding:11px 12px;
  font-family:inherit;
  font-size:0.95rem;
  font-weight:600;
  cursor:pointer;
}
.auth-divider{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:14px;
  color:var(--ink-soft);
  font-size:0.78rem;
}
.auth-divider::before, .auth-divider::after{
  content:"";
  flex:1;
  border-top:1px solid var(--border);
}