* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

:root {
  --paper: #F7F4ED;
  --paper-raised: #FFFFFF;
  --ink: #1F3A5F;
  --ink-dark: #142A47;
  --ink-light: #4A6585;
  --rust: #C45B3F;
  --rust-light: #E8DCD6;
  --rust-dark: #8A3D28;
  --line: #E3DDCE;
  --line-strong: #CFC6AE;
  --text-primary: #2B2722;
  --text-secondary: #6F6A5E;
  --text-tertiary: #A39D8C;
  --green: #2F6E4E;
  --green-bg: #E3EEE6;
  --amber: #9A6B1F;
  --amber-bg: #F4E9D3;
  --radius: 14px;
  --radius-sm: 8px;
  --font-sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
}

body {
  background: var(--paper);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

button {
  font-family: var(--font-sans);
  cursor: pointer;
}

input, select, textarea {
  font-family: var(--font-sans);
}

/* ===== Header / Ledger nav ===== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: max(14px, env(safe-area-inset-top)) 16px 12px;
}

.topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink-dark);
  letter-spacing: -0.01em;
}
.brand .stamp {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: var(--ink);
  display: flex; align-items: center; justify-content: center;
  color: var(--paper);
  font-size: 14px;
  flex-shrink: 0;
}

.month-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}
.month-nav button {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  transition: background .15s;
}
.month-nav button:active { background: var(--rust-light); }
.month-label {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  min-width: 84px;
  text-align: center;
  color: var(--ink-dark);
}

.icon-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.icon-btn.spinning svg { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.tabs {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  overflow-x: auto;
}
.tab-btn {
  flex: 1;
  padding: 9px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all .15s;
}
.tab-btn.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* ===== Main content ===== */
.content {
  flex: 1;
  padding: 16px 16px max(90px, calc(env(safe-area-inset-bottom) + 80px));
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
}

/* ===== Summary cards ===== */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}
@media (max-width: 480px) {
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .summary-grid .card-balance { grid-column: span 2; }
}
.summary-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.summary-card .label {
  font-size: 11.5px;
  color: var(--text-tertiary);
  margin: 0 0 6px;
  font-weight: 500;
}
.summary-card .value {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}
.summary-card.income .value { color: var(--green); }
.summary-card.expense .value { color: var(--rust-dark); }
.summary-card .sub {
  font-size: 11px;
  color: var(--text-tertiary);
  margin: 4px 0 0;
}

.progress-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--text-secondary);
  background: var(--rust-light);
  padding: 3px 9px;
  border-radius: 100px;
  margin-bottom: 14px;
  font-weight: 500;
}
.progress-pill i { font-size: 13px; color: var(--rust-dark); }

/* ===== Section ===== */
.section-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink-dark);
  margin: 22px 0 10px;
}
.section-title svg { color: var(--ink); }
.section-title .count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
  font-weight: 500;
  margin-left: auto;
}

/* ===== Entry list / ledger rows ===== */
.ledger {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.ledger-group-label {
  padding: 8px 14px;
  background: var(--paper);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--line);
}
.entry-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.entry-row:last-child { border-bottom: none; }
.entry-row.done { background: #FBFAF6; }

.check {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--line-strong);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--paper-raised);
  transition: all .15s;
}
.check.checked {
  background: var(--green);
  border-color: var(--green);
  color: white;
  font-size: 13px;
}

.entry-main {
  flex: 1;
  min-width: 0;
}
.entry-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.entry-row.done .entry-name {
  color: var(--text-tertiary);
  text-decoration: line-through;
}
.entry-meta {
  font-size: 11.5px;
  color: var(--text-tertiary);
  margin-top: 2px;
  display: flex;
  gap: 6px;
  align-items: center;
}
.badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--text-secondary);
  font-weight: 500;
}
.badge.biz { background: var(--amber-bg); color: var(--amber); border-color: transparent; }

.entry-amount {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.entry-amount.income { color: var(--green); }
.entry-amount.expense { color: var(--text-primary); }
.entry-row.done .entry-amount { color: var(--text-tertiary); }

.entry-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}
.entry-actions button {
  width: 26px; height: 26px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.entry-actions button:active { background: var(--paper); }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-tertiary);
}
.empty-state svg { margin-bottom: 10px; display: block; margin-left: auto; margin-right: auto; color: var(--text-tertiary); }
.empty-state p { margin: 0; font-size: 13.5px; }

/* ===== Installments ===== */
.inst-row {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}
.inst-row:last-child { border-bottom: none; }
.inst-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}
.inst-name { font-size: 14px; font-weight: 600; color: var(--text-primary); display: flex; align-items: center; gap: 6px; }
.inst-frac { font-family: var(--font-mono); font-size: 12px; color: var(--text-secondary); }
.inst-bar {
  height: 7px;
  background: var(--paper);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 7px;
}
.inst-bar-fill {
  height: 100%;
  background: var(--ink);
  border-radius: 4px;
}
.inst-bar-fill.finishing { background: var(--rust); }
.inst-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--text-tertiary);
}
.inst-bottom .amt { font-family: var(--font-mono); }

/* ===== FAB ===== */
.fab {
  position: fixed;
  bottom: max(20px, calc(env(safe-area-inset-bottom) + 12px));
  right: 20px;
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  border: none;
  font-size: 24px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(31,58,95,0.35);
  z-index: 30;
}
.fab:active { transform: scale(0.94); }

/* ===== Modal/sheet ===== */
.sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20,42,71,0.32);
  z-index: 50;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.sheet {
  background: var(--paper);
  border-radius: 18px 18px 0 0;
  width: 100%;
  max-width: 520px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 18px 18px max(24px, env(safe-area-inset-bottom));
  animation: sheet-up .22s ease-out;
}
@keyframes sheet-up { from { transform: translateY(100%); } to { transform: translateY(0); } }
.sheet-handle {
  width: 36px; height: 4px;
  background: var(--line-strong);
  border-radius: 4px;
  margin: 0 auto 14px;
}
.sheet h3 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-dark);
}

.field { margin-bottom: 13px; }
.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 5px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--paper-raised);
  font-size: 14.5px;
  color: var(--text-primary);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--ink);
}
.field-row { display: flex; gap: 10px; }
.field-row .field { flex: 1; }

.seg {
  display: flex;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  overflow: hidden;
}
.seg button {
  flex: 1;
  padding: 9px 0;
  border: none;
  background: var(--paper-raised);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  border-right: 1px solid var(--line-strong);
}
.seg button:last-child { border-right: none; }
.seg button.active { background: var(--ink); color: var(--paper); }

.sheet-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.btn {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  font-size: 14.5px;
  font-weight: 600;
}
.btn.primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn.danger-text { color: var(--rust-dark); border-color: transparent; flex: none; padding: 12px 16px; }

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.settings-row:last-child { border-bottom: none; }
.settings-row .label-text { font-size: 14px; font-weight: 500; }
.settings-row .label-sub { font-size: 11.5px; color: var(--text-tertiary); margin-top: 2px; }

.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink-dark);
  color: var(--paper);
  padding: 10px 18px;
  border-radius: 100px;
  font-size: 13px;
  z-index: 60;
  white-space: nowrap;
  animation: toast-in .2s ease-out;
}
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }

.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  color: var(--text-tertiary);
  gap: 10px;
}
.loading-screen i { font-size: 26px; animation: spin 0.8s linear infinite; }

.swatch-row { display: flex; gap: 8px; flex-wrap: wrap; }
.swatch {
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  font-size: 12.5px;
  background: var(--paper-raised);
  color: var(--text-secondary);
}
.swatch.active { background: var(--rust-light); border-color: var(--rust); color: var(--rust-dark); font-weight: 600; }

/* ===== Calendar ===== */
.cal-legend {
  display: flex;
  gap: 14px;
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.cal-legend span { display: flex; align-items: center; gap: 5px; }
.cal-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.cal-dot.expense-done { background: var(--rust-dark); }
.cal-dot.expense-upcoming { background: #E7AC98; }
.cal-dot.income { background: var(--ink); }

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 4px;
}
.cal-weekdays span {
  text-align: center;
  font-size: 11px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 18px;
}
.cal-cell {
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-raised);
  min-height: 56px;
  padding: 5px 4px;
  text-align: left;
  font-family: inherit;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cal-cell.empty { visibility: hidden; pointer-events: none; }
.cal-cell.today { border-color: var(--ink); border-width: 1.5px; }
.cal-cell.selected { background: var(--rust-light); border-color: var(--rust); }
.cal-day-num { font-size: 11.5px; color: var(--text-secondary); font-weight: 500; }
.cal-cell.today .cal-day-num { color: var(--ink); font-weight: 700; }
.cal-dots { display: flex; gap: 2px; flex-wrap: wrap; }

.day-list-header {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-dark);
  margin-bottom: 8px;
}