:root{
    --paper:#EFF1EC;
    --paper-alt:#E5E9E1;
    --card:#FBFBF9;
    --ink:#1E2A2C;
    --ink-soft:#5B6B67;
    --ink-faint:#93A29C;
    --line:#D7DCD1;
    --accent:#B8863A;
    --accent-soft:#F0E4C9;
    --done:#3F7268;
    --done-soft:#DCE8E3;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--paper);
    color:var(--ink);
    font-family:'Inter',sans-serif;
    min-height:100vh;
    -webkit-font-smoothing:antialiased;
  }
  .app{
    display:grid;
    grid-template-columns:300px 1fr;
    min-height:100vh;
  }

  /* ---------- Sidebar ---------- */
  .sidebar{
    background:var(--paper-alt);
    border-right:1px solid var(--line);
    padding:28px 20px;
    display:flex;
    flex-direction:column;
    gap:28px;
    overflow-x:hidden;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
  }
  .brand-mark{
    width:34px;height:34px;
    border-radius:8px;
    background:var(--ink);
    color:var(--paper);
    font-family:'IBM Plex Mono',monospace;
    font-weight:600;
    font-size:13px;
    display:flex;align-items:center;justify-content:center;
    letter-spacing:0.5px;
    flex:none;
  }
  .brand h1{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:20px;
    margin:0;
    letter-spacing:-0.01em;
  }
  .group-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin:0 0 10px 4px;
    gap:8px;
  }
  .group-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.08em;
    color:var(--ink-faint);
    text-transform:uppercase;
    margin:0;
  }
  .group-add-btn{
    flex:none;
    width:22px;height:22px;
    border-radius:6px;
    border:1px solid var(--line);
    background:var(--card);
    color:var(--ink-soft);
    font-size:15px;
    line-height:1;
    cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    transition:background .12s ease, color .12s ease;
  }
  .group-add-btn:hover{background:var(--accent-soft);color:#7A5A22;border-color:var(--accent-soft);}
  .add-entity-row{
    display:flex;
    gap:6px;
    padding:4px 2px 10px;
  }
  .add-entity-row input{
    flex:1;
    min-width:0;
    font-family:'Inter',sans-serif;
    font-size:13px;
    padding:7px 9px;
    border:1px solid var(--line);
    border-radius:6px;
    background:var(--card);
    outline:none;
  }
  .add-entity-row input:focus{border-color:var(--accent);}
  .add-entity-row button{
    flex:none;
    font-size:12px;
    font-weight:600;
    padding:0 10px;
    border:none;
    border-radius:6px;
    background:var(--ink);
    color:var(--paper);
    cursor:pointer;
  }
  .group + .group{
    margin-top:4px;
    padding-top:22px;
    border-top:1px dashed var(--line);
  }
  ul.entity-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
  .entity-item{
    display:flex;
    align-items:center;
    gap:6px;
    padding:9px 10px;
    border-radius:7px;
    cursor:pointer;
    border-left:3px solid transparent;
    transition:background .12s ease, border-color .12s ease;
  }
  .entity-item:hover{background:#DEE3D8;}
  .entity-item.active{
    background:var(--card);
    border-left:3px solid var(--accent);
    box-shadow:0 1px 2px rgba(30,42,44,0.06);
  }
  .entity-name{
    flex:1;
    min-width:0;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    font-size:14px;
    font-weight:500;
    color:var(--ink);
  }
  .entity-item.active .entity-name{font-weight:600;}
  .entity-badge{
    flex:none;
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    font-weight:600;
    color:var(--ink-soft);
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:20px;
    min-width:24px;
    text-align:center;
    padding:2px 6px;
  }
  .entity-badge.zero{color:var(--ink-faint);}
  .entity-item.active .entity-badge{
    background:var(--accent-soft);
    border-color:var(--accent-soft);
    color:#7A5A22;
  }
  .entity-remove{
    flex:none;
    opacity:0;
    background:none;
    border:none;
    color:var(--ink-faint);
    font-size:15px;
    cursor:pointer;
    padding:0 2px;
    transition:opacity .12s ease, color .12s ease;
  }
  .entity-item:hover .entity-remove{opacity:1;}
  .entity-remove:hover{color:#B04A3F;}

  /* ---------- Board ---------- */
  .board{
    padding:40px 56px;
    max-width:760px;
  }
  .board-header{
    display:flex;
    align-items:baseline;
    gap:14px;
    margin-bottom:26px;
  }
  .board-header h2{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:30px;
    margin:0;
    letter-spacing:-0.01em;
  }
  .tally{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--ink-soft);
    background:var(--paper-alt);
    border:1px solid var(--line);
    padding:3px 9px;
    border-radius:20px;
  }

  /* ---------- Finance (collapsed, privacy) ---------- */
  .finance-section{
    margin-top:34px;
    padding-top:26px;
    border-top:1px dashed var(--line);
  }
  .finance-toggle{
    display:flex;
    align-items:center;
    gap:8px;
    font-family:'Inter',sans-serif;
    font-size:13px;
    font-weight:500;
    color:var(--ink-soft);
    background:var(--paper-alt);
    border:1px solid var(--line);
    border-radius:9px;
    padding:9px 14px;
    cursor:pointer;
    transition:background .12s ease, color .12s ease, border-color .12s ease;
  }
  .finance-toggle:hover{background:var(--accent-soft);color:#7A5A22;border-color:var(--accent-soft);}
  .finance-toggle.open{margin-bottom:16px;}
  .finance-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:12px;
    padding:20px 22px 22px;
  }
  .finance-title{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.08em;
    color:var(--ink-faint);
    text-transform:uppercase;
    margin:0 0 16px 0;
  }
  .finance-grid{
    display:grid;
    grid-template-columns:1fr 1fr 1fr;
    gap:14px;
    margin-bottom:20px;
  }
  .finance-field label{
    display:block;
    font-size:11px;
    color:var(--ink-soft);
    margin-bottom:5px;
  }
  .finance-field input{
    width:100%;
    font-family:'Inter',sans-serif;
    font-size:14px;
    padding:9px 11px;
    border:1px solid var(--line);
    border-radius:8px;
    background:var(--paper);
    color:var(--ink);
    outline:none;
    transition:border-color .12s ease, box-shadow .12s ease;
  }
  .finance-field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
  .finance-months-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:10px;
  }
  .finance-months-label{font-size:13px;font-weight:600;color:var(--ink);}
  .year-nav{display:flex;align-items:center;gap:10px;}
  .year-nav button{
    width:22px;height:22px;
    border:1px solid var(--line);
    background:var(--paper);
    border-radius:6px;
    cursor:pointer;
    color:var(--ink-soft);
    display:flex;align-items:center;justify-content:center;
  }
  .year-nav button:hover{background:var(--accent-soft);}
  .year-nav span{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    font-weight:600;
    min-width:38px;
    text-align:center;
  }
  .months-grid{
    display:grid;
    grid-template-columns:repeat(6,1fr);
    gap:6px;
    margin-bottom:14px;
  }
  .month-chip{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    font-weight:600;
    padding:9px 0;
    text-align:center;
    border-radius:7px;
    border:1px solid var(--line);
    background:var(--paper);
    color:var(--ink-soft);
    cursor:pointer;
    transition:background .12s ease, color .12s ease, border-color .12s ease;
  }
  .month-chip:hover{border-color:var(--done);}
  .month-chip.paid{
    background:var(--done);
    border-color:var(--done);
    color:#fff;
  }
  .finance-summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:12.5px;
    color:var(--ink-soft);
    padding-top:12px;
    border-top:1px dashed var(--line);
  }
  .finance-summary strong{color:var(--ink);}

  .section-title{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:17px;
    margin:0 0 14px 0;
  }
  .section-title.extra{color:var(--ink-soft);}

  .add-form{
    display:flex;
    gap:10px;
    margin-bottom:22px;
  }
  .add-form input{
    font-family:'Inter',sans-serif;
    font-size:14px;
    padding:12px 14px;
    border:1px solid var(--line);
    border-radius:9px;
    background:var(--card);
    color:var(--ink);
    outline:none;
    transition:border-color .12s ease, box-shadow .12s ease;
  }
  .add-form input.task-text-input{flex:1;}
  .add-form select{
    flex:none;
    font-family:'Inter',sans-serif;
    font-size:13.5px;
    padding:0 12px;
    border:1px solid var(--line);
    border-radius:9px;
    background:var(--card);
    color:var(--ink);
    outline:none;
    max-width:180px;
  }
  .add-form select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
  .entity-tag{
    flex:none;
    font-family:'Inter',sans-serif;
    font-size:11.5px;
    font-weight:600;
    color:#7A5A22;
    background:var(--accent-soft);
    border-radius:20px;
    padding:2px 9px;
  }
  .task-row.done .entity-tag{opacity:0.6;}
  .add-form input[type="date"]{
    flex:none;
    width:150px;
    color:var(--ink-soft);
    font-size:13px;
  }
  .add-form input:focus{
    border-color:var(--accent);
    box-shadow:0 0 0 3px var(--accent-soft);
  }
  .add-form button{
    font-family:'Inter',sans-serif;
    font-weight:600;
    font-size:14px;
    padding:0 20px;
    border:none;
    border-radius:9px;
    background:var(--ink);
    color:var(--paper);
    cursor:pointer;
    transition:opacity .12s ease;
  }
  .add-form button:hover{opacity:0.85;}

  ul.task-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
  .task-row{
    display:flex;
    align-items:center;
    gap:12px;
    padding:12px 4px;
    border-bottom:1px solid var(--line);
  }
  .task-row:last-child{border-bottom:none;}
  .checkbox{
    flex:none;
    width:20px;height:20px;
    border-radius:5px;
    border:1.5px solid var(--ink-faint);
    background:var(--card);
    cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    position:relative;
    transition:border-color .12s ease, background .12s ease;
  }
  .checkbox:hover{border-color:var(--done);}
  .checkbox svg{
    width:12px;height:12px;
    opacity:0;
    transform:scale(0.4) rotate(-10deg);
    transition:transform .18s cubic-bezier(.34,1.56,.64,1), opacity .12s ease;
  }
  .task-row.done .checkbox{
    background:var(--done);
    border-color:var(--done);
  }
  .task-row.done .checkbox svg{opacity:1;transform:scale(1) rotate(0deg);}
  .task-text{
    flex:1;
    font-size:14.5px;
    color:var(--ink);
  }
  .task-row.done .task-text{
    color:var(--ink-faint);
    text-decoration:line-through;
    text-decoration-color:var(--ink-faint);
  }
  .task-date{
    flex:none;
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ink-soft);
    background:var(--paper-alt);
    border:1px solid var(--line);
    border-radius:20px;
    padding:2px 8px;
  }
  .task-date.overdue{color:#B04A3F;background:#F5E4E1;border-color:#F0D2CD;}
  .task-row.done .task-date{color:var(--ink-faint);background:var(--paper);}
  .task-remove{
    flex:none;
    opacity:0;
    background:none;
    border:none;
    color:var(--ink-faint);
    font-size:16px;
    cursor:pointer;
    padding:2px 6px;
    transition:opacity .12s ease, color .12s ease;
  }
  .task-row:hover .task-remove{opacity:1;}
  .task-remove:hover{color:#B04A3F;}

  .empty-state{
    color:var(--ink-faint);
    font-size:14px;
    padding:16px 4px;
    font-style:italic;
  }

  .done-section{margin-top:22px;}
  .done-toggle{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--ink-soft);
    background:none;
    border:none;
    cursor:pointer;
    padding:6px 4px;
    display:flex;
    align-items:center;
    gap:6px;
  }
  .done-toggle:hover{color:var(--ink);}
  .chevron{transition:transform .15s ease;}
  .chevron.open{transform:rotate(180deg);}
  ul.task-list.done-list{margin-top:8px;}

  .divider-block{
    margin:34px 0 26px;
    padding-top:26px;
    border-top:1px dashed var(--line);
  }

  @media (max-width:760px){
    .app{grid-template-columns:1fr;}
    .sidebar{
      flex-direction:row;
      overflow-x:auto;
      gap:20px;
      padding:16px;
      border-right:none;
      border-bottom:1px solid var(--line);
    }
    .brand{display:none;}
    .group{flex:none;min-width:200px;}
    .group + .group{margin-top:0;padding-top:0;border-top:none;border-left:1px dashed var(--line);padding-left:20px;}
    .board{padding:28px 20px;max-width:100%;}
    .finance-grid{grid-template-columns:1fr;}
    .months-grid{grid-template-columns:repeat(4,1fr);}
  }

  @media (prefers-reduced-motion: reduce){
    *{transition:none !important; animation:none !important;}
  }

/* ---------- Logout link ---------- */
.logout-link{
  margin-top:auto;
  padding-top:16px;
  font-family:'IBM Plex Mono',monospace;
  font-size:11px;
  color:var(--ink-faint);
  text-decoration:none;
  border-top:1px dashed var(--line);
}
.logout-link:hover{color:var(--ink-soft);}

/* ---------- Auth pages (login / install) ---------- */
.auth-body{
  background:var(--paper);
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:'Inter',sans-serif;
  color:var(--ink);
  padding:20px;
}
.auth-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:36px 34px;
  width:100%;
  max-width:380px;
  box-shadow:0 4px 18px rgba(30,42,44,0.06);
}
.auth-card h1{
  font-family:'Fraunces',serif;
  font-weight:600;
  font-size:24px;
  margin:0 0 6px 0;
}
.auth-msg{font-size:13.5px;color:var(--ink-soft);margin:0 0 18px 0;}
.auth-msg-ok{color:var(--done);}
.auth-error{
  font-size:13px;
  color:#B04A3F;
  background:#F5E4E1;
  border:1px solid #F0D2CD;
  border-radius:8px;
  padding:9px 12px;
  margin:0 0 16px 0;
}
.auth-section{
  font-family:'IBM Plex Mono',monospace;
  font-size:11px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--ink-faint);
  margin:18px 0 10px 0;
}
.auth-section:first-of-type{margin-top:0;}
.auth-form{display:flex;flex-direction:column;gap:12px;}
.auth-form label{
  display:flex;
  flex-direction:column;
  gap:5px;
  font-size:12.5px;
  color:var(--ink-soft);
}
.auth-form input{
  font-family:'Inter',sans-serif;
  font-size:14px;
  padding:11px 13px;
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--paper);
  color:var(--ink);
  outline:none;
}
.auth-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
.auth-form button{
  margin-top:6px;
  font-family:'Inter',sans-serif;
  font-weight:600;
  font-size:14px;
  padding:12px 0;
  border:none;
  border-radius:9px;
  background:var(--ink);
  color:var(--paper);
  cursor:pointer;
}
.auth-form button:hover{opacity:0.88;}
.auth-link{font-size:13.5px;color:var(--accent);text-decoration:none;font-weight:600;}
.auth-link:hover{text-decoration:underline;}