:root {
  --bg: #111418;
  --surface: #1b2027;
  --surface-2: #262b33;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #4f8cff;
  --success: #35c07a;
  --danger: #ff5a5a;
  --radius: 14px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-2: #eceef1;
    --text: #1a1d21;
    --muted: #5f6368;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

/* A class rule that sets `display` outranks the UA stylesheet's [hidden]
   rule, so hiding must be stated here to survive the cascade. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  max-width: 480px;
  margin: 0 auto;
}
.brand { font-weight: 600; }
.ghost, a.ghost { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.ghost:hover { color: var(--text); }

.entry, .review {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 18px calc(28px + env(safe-area-inset-bottom));
}

.amount {
  font-size: 3rem;
  font-weight: 600;
  text-align: center;
  padding: 18px 0 22px;
  letter-spacing: 0.5px;
  font-variant-numeric: tabular-nums;
}

.numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.key {
  min-height: 64px;
  font-size: 1.7rem;
  border: none;
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: transform 0.05s ease, background 0.1s ease;
}
.key:active { transform: scale(0.96); background: var(--accent); color: #fff; }
.key-zero { grid-column: span 2; }
.key-back { font-size: 1.5rem; }

.extra-toggle {
  width: 100%;
  margin-top: 12px;
  padding: 10px;
  background: none;
  border: 1px dashed var(--surface-2);
  border-radius: var(--radius);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.95rem;
}
.extra {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}
.extra input {
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--surface-2);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}

.categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 18px;
}
.cat {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 58px;
  padding: 0 16px;
  border: none;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
  text-align: left;
  transition: background 0.15s ease;
}
.cat:active { background: var(--surface-2); }
.cat-icon { font-size: 1.4rem; }
.cat-label { flex: 1; }
.cat-check {
  opacity: 0;
  color: var(--success);
  font-weight: 700;
  font-size: 1.3rem;
  transition: opacity 0.12s ease;
}
.cat.confirmed { background: rgba(53, 192, 122, 0.18); }
.cat.confirmed .cat-check { opacity: 1; }

.recent { margin-top: 26px; }
.recent-title { font-size: 0.95rem; color: var(--muted); font-weight: 500; margin: 0 0 10px; }
.recent-list { display: grid; gap: 6px; }
.rrow {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--surface);
  border-radius: var(--radius);
  font-size: 0.95rem;
}
.rmain { flex: 1; display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.rcat { font-weight: 500; }
.rnote { color: var(--muted); font-size: 0.82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rmeta { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.ramt { font-variant-numeric: tabular-nums; font-weight: 600; }
.rdate { color: var(--muted); font-size: 0.78rem; }

.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: rgba(255, 90, 90, 0.15);
  color: var(--danger);
  font-size: 0.95rem;
}
.banner button {
  border: none;
  border-radius: 8px;
  background: var(--danger);
  color: #fff;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 600;
}

button:disabled { opacity: 0.5; cursor: default; }

/* Review page */
.monthnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
}
.navbtn {
  min-width: 48px;
  min-height: 48px;
  font-size: 1.5rem;
  border: none;
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
}
.month-label { font-size: 1.1rem; font-weight: 600; }
.total {
  font-size: 2.6rem;
  font-weight: 600;
  text-align: center;
  padding: 20px 0 8px;
  font-variant-numeric: tabular-nums;
}
.breakdown { display: grid; gap: 6px; }
.brow, .hrow {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--surface);
  border-radius: var(--radius);
  border: none;
  width: 100%;
  color: var(--text);
  text-align: left;
  font-size: 1rem;
}
.hrow { cursor: pointer; margin-bottom: 6px; }
.hrow:active { background: var(--surface-2); }
.amt { font-variant-numeric: tabular-nums; font-weight: 600; }
.brow .amt { margin-left: auto; }
.section-title { font-size: 1rem; color: var(--muted); margin: 22px 0 10px; }
.hmain { flex: 1; display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.hcat { font-weight: 500; }
.hnote { color: var(--muted); font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hmeta { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.hdate { color: var(--muted); font-size: 0.8rem; }
.empty { color: var(--muted); text-align: center; padding: 16px; }

/* Edit modal */
.modalbg {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px;
  width: 100%;
  max-width: 440px;
  display: grid;
  gap: 12px;
}
.field { display: grid; gap: 4px; font-size: 0.85rem; color: var(--muted); }
.field input, .field select {
  padding: 12px;
  font-size: 1rem;
  border-radius: 10px;
  border: 1px solid var(--surface-2);
  background: var(--bg);
  color: var(--text);
}
.modal-actions { display: flex; gap: 8px; margin-top: 4px; }
.modal-error { margin: 0; color: var(--danger); font-size: 0.9rem; }
.modal-actions button {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
.modal-actions .primary { background: var(--accent); color: #fff; }
.modal-actions .secondary { background: var(--surface-2); color: var(--text); }
.modal-actions .danger { background: var(--danger); color: #fff; }

/* Login page */
.login {
  max-width: 320px;
  margin: 18vh auto 0;
  padding: 0 20px;
  display: grid;
  gap: 12px;
  text-align: center;
}
.login input, .login button {
  padding: 14px;
  font-size: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--surface-2);
}
.login input { background: var(--surface); color: var(--text); }
.login button { background: var(--accent); color: #fff; border: none; cursor: pointer; font-weight: 600; }
.login .err { color: var(--danger); }