* {
  box-sizing: border-box;
}

:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #111827;
  --primary-contrast: #ffffff;
  --danger: #b91c1c;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 16px;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  min-height: 100svh;
}

button, input, textarea, select {
  font: inherit;
}

input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
}

textarea {
  resize: vertical;
  min-height: 88px;
}

button {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  background: #eceff3;
  color: var(--text);
  cursor: pointer;
}

button.primary {
  background: var(--primary);
  color: var(--primary-contrast);
}

button.ghost {
  background: transparent;
  border: 1px solid var(--line);
}

button.danger {
  background: var(--danger);
  color: #fff;
}

button.small {
  padding: 8px 10px;
  font-size: 14px;
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

.hidden {
  display: none !important;
}

.app-shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 14px 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 14px;
}

.topbar h1 {
  margin: 0;
  font-size: 24px;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 14px;
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--bg);
  padding-bottom: 8px;
}

.tab {
  background: #e9edf2;
  font-weight: 700;
}

.tab.active {
  background: var(--primary);
  color: #fff;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 14px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.card h2, .card h3 {
  margin: 0 0 10px;
}

.entry-form {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field.compact {
  min-width: 180px;
}

.field > span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--line);
  background: var(--surface-alt);
  border-radius: 999px;
  padding: 10px 14px;
  min-height: 42px;
}

.chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.inline-options {
  display: grid;
  gap: 8px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox-row input {
  width: auto;
}

.quick-card .stats-grid,
#summaryTab .stats-grid {
  margin-top: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat {
  background: var(--surface-alt);
  border-radius: 14px;
  padding: 14px;
  border: 1px solid var(--line);
}

.stat .label {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 6px;
}

.stat strong {
  font-size: 22px;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}

.history-list {
  display: grid;
  gap: 10px;
}

.history-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: var(--surface-alt);
}

.history-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}

.history-main {
  display: grid;
  gap: 4px;
}

.amount {
  font-weight: 800;
  font-size: 22px;
}

.meta {
  color: var(--muted);
  font-size: 13px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.badge {
  padding: 4px 8px;
  border-radius: 999px;
  background: #e5e7eb;
  font-size: 12px;
}

.history-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.summary-sections {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 18px;
}

.summary-list {
  display: grid;
  gap: 8px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
}

.row {
  display: flex;
  gap: 8px;
}

.row input {
  flex: 1;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.manage-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  padding: 8px 10px;
  border-radius: 999px;
}

.settings-group {
  margin-top: 18px;
}

.backup-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.file-button {
  display: inline-flex;
  align-items: center;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  cursor: pointer;
}

.file-button input {
  display: none;
}

.note {
  color: var(--muted);
  font-size: 13px;
}

.danger-zone {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.dialog-card {
  min-width: min(90vw, 360px);
  border: 0;
  padding: 0;
}

#confirmDialog {
  border: 0;
  border-radius: 16px;
  padding: 0;
}

#confirmDialog::backdrop {
  background: rgba(0, 0, 0, 0.35);
}

.dialog-card p {
  padding: 18px 18px 0;
  margin: 0 0 16px;
}

.dialog-card .actions {
  padding: 0 18px 18px;
  justify-content: flex-end;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 20px 10px;
}

@media (max-width: 720px) {
  .stats-grid,
  .filter-grid,
  .summary-sections {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
  }

  .tabs {
    grid-template-columns: repeat(4, 1fr);
  }

  .tab {
    padding: 12px 8px;
    font-size: 14px;
  }

  .card {
    padding: 14px;
  }
}