:root{
  --paper:#FAF7EF; --paper-line:#E4DCC6; --ink:#1C2B45; --ink-soft:#4A5568;
  --gold:#B8862B; --gold-deep:#8A6215; --maroon:#7C2E2E; --maroon-bg:#F5E6E1;
  --green:#2F6B4F; --green-bg:#E3EEE4; --blue:#2B5C7C; --plum:#5C3B6B;
  --card:#FFFDF8; --border:#DCD3B8; --shadow:0 1px 0 rgba(28,43,69,0.05);
  --topbar-h:52px; --bottomnav-h:64px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;height:100%;}
body{font-family:'Inter',sans-serif;background:var(--paper);color:var(--ink);}

.app-shell{display:flex;min-height:100vh;}
.main{flex:1;padding:26px 30px 40px;min-width:0;}

/* ---------- Desktop sidebar (hidden on mobile) ---------- */
.tabindex{width:190px;flex-shrink:0;background:linear-gradient(180deg,#F1EAD6,#EDE4CC);
  border-right:1px solid var(--paper-line);padding:22px 0;display:flex;flex-direction:column;gap:2px;}
.brand{font-family:'Fraunces',serif;font-weight:600;font-size:16px;color:var(--ink);
  padding:0 16px 18px 18px;line-height:1.15;border-bottom:1px solid var(--paper-line);margin-bottom:12px;}
.brand span{display:block;font-family:'IBM Plex Mono',monospace;font-weight:400;font-size:10px;
  letter-spacing:.06em;color:var(--ink-soft);margin-top:3px;text-transform:uppercase;}
.tab{position:relative;text-align:left;background:none;border:none;cursor:pointer;text-decoration:none;
  padding:10px 14px 10px 18px;font-family:'Inter',sans-serif;font-size:13px;font-weight:500;color:var(--ink-soft);
  display:flex;align-items:center;gap:9px;border-radius:0 20px 20px 0;margin-right:12px;transition:background .12s ease,color .12s ease;}
.tab .dot{width:7px;height:7px;border-radius:50%;flex-shrink:0;}
.tab:hover{background:rgba(28,43,69,0.05);color:var(--ink);}
.tab.active{background:var(--card);color:var(--ink);font-weight:600;box-shadow:var(--shadow);}
.tab.active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent,var(--gold));border-radius:0 3px 3px 0;}
.user-box{margin-top:auto;padding:14px 18px 0;border-top:1px solid var(--paper-line);}
.user-name{font-size:12.5px;font-weight:600;margin-bottom:2px;}
.logout-link{font-size:12px;color:var(--maroon);text-decoration:none;}
.logout-link:hover{text-decoration:underline;}

/* ---------- Mobile top bar + bottom nav (hidden on desktop) ---------- */
.mobile-topbar,.bottom-nav{display:none;}

.page-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:4px;flex-wrap:wrap;gap:8px;}
.page-title{font-family:'Fraunces',serif;font-weight:600;font-size:24px;}
.page-sub{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink-soft);}
.rule{height:1px;background:repeating-linear-gradient(90deg,var(--paper-line) 0 6px, transparent 6px 10px);margin:12px 0 20px;}
.section-h{font-family:'Fraunces',serif;font-size:16px;margin:4px 0 10px;}

.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:22px;}
.metric{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 16px;min-width:0;}
.metric .label{font-size:11px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.metric .val{font-family:'IBM Plex Mono',monospace;font-size:19px;font-weight:600;overflow-wrap:break-word;}
.metric.pos .val{color:var(--green);}
.metric.neg .val{color:var(--maroon);}

.entry-form{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px 18px;margin-bottom:20px;}
.entry-form h3{font-family:'Fraunces',serif;font-size:15px;font-weight:600;margin:0 0 12px;}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;align-items:end;}
.field label{display:block;font-size:11px;color:var(--ink-soft);margin-bottom:4px;}
.field input,.field select{width:100%;height:38px;border:1px solid var(--border);border-radius:6px;
  padding:0 10px;font-family:'Inter',sans-serif;font-size:14px;background:#fff;color:var(--ink);}
.field input:focus,.field select:focus{outline:2px solid var(--gold);outline-offset:-1px;}
.btn{height:38px;padding:0 18px;border-radius:6px;border:1px solid var(--ink);background:var(--ink);
  color:var(--paper);font-size:14px;font-weight:500;cursor:pointer;font-family:'Inter',sans-serif;}
.btn:hover{background:#0f1c30;}
.err{color:var(--maroon);font-size:12px;margin-top:8px;}

/* ---------- Ledger table (desktop) / card list (mobile, see media query) ---------- */
table.ledger{width:100%;border-collapse:collapse;font-size:13px;}
table.ledger thead th{text-align:left;font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-soft);font-weight:600;padding:0 10px 8px;border-bottom:1px solid var(--ink);}
table.ledger tbody td{padding:11px 10px;border-bottom:1px solid var(--paper-line);vertical-align:middle;}
table.ledger tbody tr:hover{background:rgba(184,134,43,0.06);}
.num{font-family:'IBM Plex Mono',monospace;text-align:right;white-space:nowrap;}
.name-cell{font-weight:500;}
.sub{font-size:11px;color:var(--ink-soft);margin-top:2px;}
.pill{display:inline-block;font-size:10.5px;font-weight:600;padding:4px 10px;border-radius:20px;}
.pill.paid{background:var(--green-bg);color:var(--green);}
.pill.unpaid{background:var(--maroon-bg);color:var(--maroon);}
.del{background:none;border:none;cursor:pointer;color:var(--ink-soft);font-size:18px;line-height:1;
  padding:6px 10px;border-radius:4px;min-width:36px;min-height:36px;}
.del:hover{color:var(--maroon);background:var(--maroon-bg);}
.empty{text-align:center;padding:34px 10px;color:var(--ink-soft);font-size:13px;}

.progress-wrap{background:var(--paper-line);height:6px;border-radius:4px;overflow:hidden;width:100%;}
.progress-fill{height:100%;background:var(--gold);}
.goal-card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px 18px;margin-bottom:12px;}
.goal-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:9px;gap:10px;flex-wrap:wrap;}
.goal-top .gname{font-weight:600;font-size:14px;}
.goal-top .gnum{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-soft);}

.auth-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;}
.auth-card{width:380px;max-width:100%;background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:30px 28px;}
.auth-title{font-family:'Fraunces',serif;font-size:22px;margin:0 0 4px;}
.auth-sub{font-size:13px;color:var(--ink-soft);margin:0 0 18px;}
.auth-error{background:var(--maroon-bg);color:var(--maroon);font-size:13px;padding:9px 12px;border-radius:6px;margin-bottom:14px;}
.auth-form .field{margin-bottom:12px;}
.auth-form .field input{height:44px;font-size:16px;}
.auth-foot{font-size:13px;color:var(--ink-soft);margin:16px 0 0;text-align:center;}
.auth-foot a{color:var(--ink);font-weight:600;text-decoration:none;}
.auth-foot a:hover{text-decoration:underline;}

/* =========================================================
   MOBILE (<= 768px): app-style shell with top bar + bottom nav
   ========================================================= */
@media (max-width:768px){
  .app-shell{display:block;}
  .tabindex{display:none;}

  .mobile-topbar{
    display:flex; align-items:center; justify-content:space-between;
    height:var(--topbar-h); padding:0 16px;
    background:var(--card); border-bottom:1px solid var(--paper-line);
    position:sticky; top:0; z-index:20;
  }
  .mobile-brand{font-family:'Fraunces',serif;font-weight:600;font-size:16px;color:var(--ink);}
  .mobile-logout{
    color:var(--ink-soft); display:flex; align-items:center; justify-content:center;
    width:36px;height:36px;border-radius:8px;text-decoration:none;
  }
  .mobile-logout:hover{background:var(--maroon-bg);color:var(--maroon);}

  .main{ padding:16px 14px calc(var(--bottomnav-h) + 20px); }
  .page-title{font-size:20px;}

  .bottom-nav{
    display:flex; overflow-x:auto; -webkit-overflow-scrolling:touch;
    position:fixed; left:0; right:0; bottom:0; z-index:30;
    height:var(--bottomnav-h); padding:6px 4px calc(6px + env(safe-area-inset-bottom));
    background:var(--card); border-top:1px solid var(--paper-line);
    box-shadow:0 -2px 10px rgba(28,43,69,0.06);
    scrollbar-width:none;
  }
  .bottom-nav::-webkit-scrollbar{display:none;}
  .bnav-item{
    flex:0 0 auto; width:68px; display:flex; flex-direction:column; align-items:center; justify-content:center;
    gap:3px; text-decoration:none; color:var(--ink-soft); padding:4px 2px; border-radius:10px;
  }
  .bnav-icon{color:var(--ink-soft);}
  .bnav-label{font-size:10px; font-weight:500; white-space:nowrap;}
  .bnav-item.active{color:var(--accent,var(--ink));}
  .bnav-item.active .bnav-icon{color:var(--accent,var(--ink));}
  .bnav-item.active .bnav-label{font-weight:600;}

  .metrics{grid-template-columns:1fr 1fr;gap:10px;}
  .metric{padding:12px;}
  .metric .val{font-size:16px;}

  .entry-form{padding:14px;}
  .form-grid{grid-template-columns:1fr;gap:10px;}
  .field input,.field select{height:44px;font-size:16px;}
  .btn{height:44px;font-size:15px;}

  /* Ledger table -> stacked cards */
  table.ledger thead{display:none;}
  table.ledger, table.ledger tbody, table.ledger tr, table.ledger td{display:block;width:100%;}
  table.ledger{border:none;}
  table.ledger tr{
    background:var(--card); border:1px solid var(--border); border-radius:10px;
    padding:4px 4px; margin-bottom:10px;
  }
  table.ledger tr:hover{background:var(--card);}
  table.ledger td{
    border-bottom:none; padding:8px 10px; display:flex; align-items:center; justify-content:space-between; gap:10px;
  }
  table.ledger td.name-cell{
    display:block; font-size:15px; padding-bottom:4px; border-bottom:1px dashed var(--paper-line);
  }
  table.ledger td[data-label]::before{
    content:attr(data-label); font-size:11px; color:var(--ink-soft); font-weight:500; flex-shrink:0;
  }
  table.ledger td.actions-cell{justify-content:flex-end;}
  table.ledger .num{text-align:right;}
  .goal-card{padding:14px;}
}

@media (min-width:769px){
  .mobile-topbar,.bottom-nav{display:none !important;}
}