:root{
  --bg:#14161A;
  --surface:#1C1F24;
  --surface-2:#24282E;
  --surface-3:#2C3138;
  --border:#33383F;
  --text:#ECEAE4;
  --text-muted:#8B909A;
  --text-faint:#565B63;
  --accent:#C9A34E;
  --accent-dim:#8f7538;
  --accent-soft:rgba(201,163,78,.14);
  --expense:#C4593F;
  --expense-soft:rgba(196,89,63,.15);
  --income:#5B8C6E;
  --income-soft:rgba(91,140,110,.15);
  --radius:16px;
  --radius-sm:10px;
  --font-display: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Cascadia Mono', 'Roboto Mono', Consolas, monospace;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  overscroll-behavior-y:none;
}
button, input, select{ font-family:inherit; color:inherit; }
button{ cursor:pointer; }

@media (prefers-reduced-motion:no-preference){
  .sheet-overlay .sheet{ animation:sheet-in .22s ease-out; }
  .fab:active{ transform:scale(.94); }
}
@keyframes sheet-in{
  from{ transform:translateY(16px); opacity:0; }
  to{ transform:translateY(0); opacity:1; }
}

/* ---------- topbar ---------- */
.topbar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; justify-content:space-between;
  padding: calc(14px + var(--safe-top)) 18px 12px;
  background:linear-gradient(var(--bg) 80%, transparent);
}
.topbar__brand{ display:flex; align-items:center; gap:8px; }
.brand-mark{
  font-family:var(--font-display);
  font-size:22px; color:var(--accent);
  border:1.5px solid var(--accent-dim);
  border-radius:50%;
  width:30px; height:30px;
  display:flex; align-items:center; justify-content:center;
}
.brand-name{
  font-family:var(--font-display);
  font-size:19px; letter-spacing:.02em;
}
.icon-btn{
  background:transparent; border:none; color:var(--text-muted);
  width:38px; height:38px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
}
.icon-btn:active{ background:var(--surface-2); }
.icon-btn--danger{ color:var(--expense); }

/* ---------- main / views ---------- */
#app{
  padding: 4px 18px calc(120px + var(--safe-bottom));
  max-width:560px;
  margin:0 auto;
}
.view[hidden]{ display:none; }

.section-head{
  display:flex; align-items:center; justify-content:space-between;
  margin: 10px 0 16px;
}
.section-head h2{ font-family:var(--font-display); font-size:20px; margin:0; font-weight:400; }
.subhead{
  font-size:13px; text-transform:uppercase; letter-spacing:.08em;
  color:var(--text-faint); margin: 22px 2px 10px;
  font-weight:600;
}

/* ---------- today / stamp ---------- */
.today-head{ padding: 10px 0 22px; text-align:center; }
.today-date{
  color:var(--text-muted); font-size:14px; margin:0 0 18px;
  letter-spacing:.02em;
}
.stamp{
  --stamp-size: 200px;
  width:var(--stamp-size); height:var(--stamp-size);
  margin:0 auto;
  border-radius:50%;
  border:2px solid var(--accent);
  outline: 1px dashed var(--accent-dim);
  outline-offset: 8px;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  transform: rotate(-3deg);
  position:relative;
}
.stamp__currency{ font-family:var(--font-mono); font-size:20px; color:var(--accent); vertical-align:top; }
.stamp__amount{
  font-family:var(--font-mono); font-size:40px; font-weight:600;
  color:var(--text); letter-spacing:-0.02em;
}
.stamp__label{
  font-size:11px; text-transform:uppercase; letter-spacing:.12em;
  color:var(--text-muted); margin-top:6px;
}

/* ---------- lists / rows ---------- */
.list{ display:flex; flex-direction:column; gap:10px; }
.row{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:14px 16px;
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
}
.row__main{ min-width:0; }
.row__title{ font-size:15px; font-weight:600; }
.row__meta{
  font-size:12.5px; color:var(--text-muted); margin-top:2px;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.row__amount{
  font-family:var(--font-mono); font-size:16px; font-weight:600;
  white-space:nowrap;
}
.row__amount.is-expense{ color:var(--expense); }
.row__amount.is-income{ color:var(--income); }
.row__delete{
  background:none; border:none; color:var(--text-faint);
  font-size:18px; line-height:1; padding:4px 6px;
}
.row__delete:active{ color:var(--expense); }
.row--tappable{ }
.row--tappable:active{ background:var(--surface-2); }

.empty-state{
  text-align:center; color:var(--text-faint);
  font-size:14px; padding: 40px 20px; line-height:1.5;
}

/* ---------- accounts / people ---------- */
.balance-pill{
  font-family:var(--font-mono); font-size:13px; font-weight:600;
  padding:3px 9px; border-radius:20px; white-space:nowrap;
}
.balance-pill.owes-you{ background:var(--income-soft); color:var(--income); }
.balance-pill.you-owe{ background:var(--expense-soft); color:var(--expense); }
.balance-pill.settled{ background:var(--surface-2); color:var(--text-faint); }

/* ---------- monthly ---------- */
.month-nav{
  display:flex; align-items:center; justify-content:center; gap:16px;
  margin: 12px 0 4px;
}
.month-nav h2{ font-family:var(--font-display); font-weight:400; font-size:19px; min-width:170px; text-align:center; }
.month-nav .icon-btn{ font-size:20px; }
.month-total{
  text-align:center; padding: 16px 0 4px;
}
.month-total__figure{
  font-family:var(--font-mono); font-size:34px; font-weight:600; color:var(--text);
}
.month-total__label{
  display:block; color:var(--text-muted); font-size:12.5px; margin-top:4px;
}
.cat-breakdown{ display:flex; flex-direction:column; gap:12px; }
.cat-row{ }
.cat-row__top{
  display:flex; justify-content:space-between; font-size:14px; margin-bottom:6px;
}
.cat-row__name{ font-weight:600; }
.cat-row__amount{ font-family:var(--font-mono); color:var(--text-muted); }
.cat-row__bar{
  height:6px; border-radius:3px; background:var(--surface-2); overflow:hidden;
}
.cat-row__bar > span{
  display:block; height:100%; background:var(--accent); border-radius:3px;
}

/* ---------- tabbar ---------- */
.tabbar{
  position:fixed; left:0; right:0; bottom:0; z-index:20;
  display:flex;
  background:var(--surface);
  border-top:1px solid var(--border);
  padding: 6px 8px calc(6px + var(--safe-bottom));
}
.tab{
  flex:1; background:none; border:none; color:var(--text-faint);
  display:flex; flex-direction:column; align-items:center; gap:3px;
  padding:8px 4px; border-radius:12px; font-size:11px;
}
.tab.is-active{ color:var(--accent); }
.tab:active{ background:var(--surface-2); }

/* ---------- FAB ---------- */
.fab{
  position:fixed; right:20px; bottom: calc(84px + var(--safe-bottom));
  width:56px; height:56px; border-radius:50%;
  background:var(--accent); color:#1A1300;
  border:none; font-size:28px; font-weight:400;
  box-shadow:0 8px 20px rgba(0,0,0,.4);
  z-index:21;
  display:flex; align-items:center; justify-content:center;
  line-height:0;
}

/* ---------- sheets ---------- */
.sheet-overlay{
  position:fixed; inset:0; z-index:30;
  background:rgba(10,11,13,.6);
  display:flex; align-items:flex-end;
}
.sheet-overlay[hidden]{ display:none; }
.sheet{
  width:100%; max-width:560px; margin:0 auto;
  background:var(--surface-2);
  border-radius:20px 20px 0 0;
  padding: 10px 20px calc(20px + var(--safe-bottom));
  max-height:88vh; overflow-y:auto;
  border:1px solid var(--border); border-bottom:none;
}
.sheet--tall{ max-height:92vh; }
.sheet__grip{
  width:36px; height:4px; border-radius:2px; background:var(--border);
  margin: 4px auto 14px;
}
.sheet h3{
  font-family:var(--font-display); font-weight:400; font-size:20px; margin:0 0 16px;
}
.field{
  display:flex; flex-direction:column; gap:6px; margin-bottom:14px; font-size:13px; color:var(--text-muted);
}
.field em{ font-style:normal; color:var(--text-faint); }
.field input, .field select{
  background:var(--surface); border:1px solid var(--border); color:var(--text);
  border-radius:var(--radius-sm); padding:12px 13px; font-size:16px;
}
.field input:focus, .field select:focus{ outline:2px solid var(--accent); outline-offset:1px; }
.sheet__actions{ display:flex; gap:10px; margin-top:6px; }
.sheet__close{ width:100%; margin-top:14px; }

.btn{
  border-radius:var(--radius-sm); border:1px solid transparent;
  padding:12px 18px; font-size:15px; font-weight:600;
}
.btn--primary{ background:var(--accent); color:#1A1300; flex:1; }
.btn--ghost{ background:transparent; border-color:var(--border); color:var(--text); flex:1; }
.btn--danger{ background:var(--expense-soft); color:var(--expense); border-color:transparent; width:100%; margin-top:10px; }

.detail-head{ display:flex; align-items:center; justify-content:space-between; }
.detail-head h3{ margin:0; }
.detail-balance{
  font-family:var(--font-mono); font-size:15px; margin: 4px 0 18px; color:var(--text-muted);
}
.person-tx-form{
  display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:18px;
}
.person-tx-form input, .person-tx-form select{
  background:var(--surface); border:1px solid var(--border); color:var(--text);
  border-radius:var(--radius-sm); padding:11px 12px; font-size:15px;
}
.person-tx-form select{ grid-column:span 2; }
.person-tx-form button{ grid-column:span 2; }

.settings-actions{ display:flex; flex-direction:column; gap:10px; margin-top:6px; }
.settings-note{ font-size:12.5px; color:var(--text-faint); line-height:1.5; margin-top:16px; }

/* ---------- toast ---------- */
.toast{
  position:fixed; left:50%; bottom: calc(96px + var(--safe-bottom));
  transform:translateX(-50%);
  background:var(--surface-3); color:var(--text);
  padding:10px 18px; border-radius:30px; font-size:13.5px;
  border:1px solid var(--border);
  z-index:40;
}
.toast[hidden]{ display:none; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline:2px solid var(--accent); outline-offset:2px;
}

@media (min-width:600px){
  .stamp{ --stamp-size: 220px; }
}