:root {
  --bg: #f3f0e8;
  --surface: #fffdf9;
  --ink: #1a2421;
  --muted: #5c6b66;
  --border: #ddd8cc;
  --income: #2d6a4f;
  --income-bg: #d8f3dc;
  --expense: #9b2226;
  --expense-bg: #fde8e8;
  --accent: #3d5a80;
  --accent-hover: #2c4260;
  --shadow: 0 8px 24px rgba(26, 36, 33, 0.08);
  --radius: 14px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  font-family: 'DM Sans', system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}

body {
  padding-bottom: calc(12px + var(--safe-bottom));
}

#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
}

.screen {
  display: none;
  padding: 1rem 1rem 2rem;
  animation: fadeIn 0.25s ease;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* Login */
.login-card {
  margin-top: 12vh;
  padding: 2rem 1.5rem;
  background: var(--surface);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  text-align: center;
}

.logo-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 56px;
}

h1 {
  margin: 0;
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

h2, h3 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.35rem 0 1.25rem;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.35rem;
  text-align: left;
}

input:not([type="radio"]):not([type="checkbox"]),
select,
textarea {
  width: 100%;
  font: inherit;
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
}

input:not([type="radio"]):not([type="checkbox"]):focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.btn {
  font: inherit;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  transition: transform 0.12s, background 0.12s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
  width: 100%;
  margin-top: 1rem;
}

.btn-secondary {
  background: var(--border);
  color: var(--ink);
}

.btn-block {
  width: 100%;
  margin-top: 0.75rem;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  cursor: pointer;
}

.error {
  color: var(--expense);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.hidden { display: none !important; }

/* Users */
.user-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.user-list li button {
  width: 100%;
  text-align: left;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.inline-form {
  display: flex;
  gap: 0.5rem;
}

.inline-form input { flex: 1; }
.inline-form .btn { width: auto; margin-top: 0; padding: 0 1rem; }

/* App header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.greeting {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
}

#user-name {
  font-size: 1.25rem;
}

/* Tabs */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.35rem;
  background: var(--surface);
  padding: 0.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 1rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab {
  font: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.55rem;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.tab[data-tab="add"] {
  font-size: 1.25rem;
  line-height: 1;
}

.tab.active {
  background: var(--ink);
  color: var(--bg);
}

.panel { display: none; }
.panel.active { display: block; }

/* Balance */
.balance-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.balance-panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.balance-cell {
  padding: 0.55rem 0.65rem;
  min-width: 0;
}

.balance-cell:first-child {
  background: var(--ink);
  color: var(--bg);
}

.balance-cell--personal {
  background: var(--accent);
  color: var(--bg);
}

.balance-tag {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: 0.8;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.amount-md {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.25;
  display: block;
  margin-top: 0.15rem;
}

.balance-flow {
  display: flex;
  gap: 0.35rem;
  margin-top: 0.2rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  opacity: 0.85;
  line-height: 1.2;
}

.balance-flow [data-expense] {
  opacity: 0.9;
}

.section-head h3 {
  font-size: 0.95rem;
  max-width: 55%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stats-balance-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.stats-balance-mini {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
}

.stats-balance-mini .balance-tag {
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.stats-balance-mini .amount-md {
  font-size: 1rem;
}

.stats-balance-mini--family .amount-md { color: var(--ink); }
.stats-balance-mini--personal .amount-md { color: var(--accent); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.month-picker {
  width: auto;
  font-size: 0.85rem;
  padding: 0.4rem 0.5rem;
}

/* Transactions */
.tx-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.tx-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.tx-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.tx-item.income .tx-icon { background: var(--income-bg); }
.tx-item.expense .tx-icon { background: var(--expense-bg); }

.tx-main { flex: 1; min-width: 0; }

.tx-title {
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tx-meta {
  font-size: 0.78rem;
  color: var(--muted);
}

.tx-amount {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
}

.tx-item.income .tx-amount { color: var(--income); }
.tx-item.expense .tx-amount { color: var(--expense); }

.tx-delete {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.1rem;
  padding: 0.25rem;
  cursor: pointer;
  opacity: 0.5;
}

.empty {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 2rem 0;
}

/* Add form */
.add-modes {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.mode-btn {
  flex: 1;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
}

.mode-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.tx-form .field { margin-bottom: 0.75rem; }

.type-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  margin-bottom: 1rem;
  padding: 0.3rem;
  background: var(--border);
  border-radius: 12px;
}

.type-toggle label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  min-height: 44px;
  padding: 0.65rem 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  margin: 0;
  text-align: center;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.type-toggle input[type="radio"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 1;
}

.type-toggle label span {
  position: relative;
  z-index: 0;
  pointer-events: none;
}

.type-toggle label:has(input:checked) {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(26, 36, 33, 0.12);
}

.type-toggle label:has(input[value="expense"]:checked) {
  color: var(--expense);
}

.type-toggle label:has(input[value="income"]:checked) {
  color: var(--income);
}

.amount-field input {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.35rem;
  font-weight: 600;
}

.btn-voice {
  width: 100%;
  background: var(--expense);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.btn-voice.recording,
.btn-voice.listening {
  animation: pulse 1s infinite;
}

.hint-warn {
  color: var(--expense);
  font-size: 0.8rem;
}

@keyframes pulse {
  50% { opacity: 0.7; }
}

.hint {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.receipt-upload {
  display: block;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  margin: 0.75rem 0;
  background: var(--surface);
}

.receipt-upload input { display: none; }

.receipt-preview img {
  max-width: 100%;
  max-height: 200px;
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.ai-status {
  font-size: 0.85rem;
  color: var(--accent);
  text-align: center;
  margin-top: 0.5rem;
}

.chart-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.chart-block h3 {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.category-bars {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.cat-row {
  display: grid;
  grid-template-columns: 1fr 3fr auto;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.8rem;
}

.cat-bar-wrap {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.cat-bar {
  height: 100%;
  background: var(--expense);
  border-radius: 4px;
  transition: width 0.4s ease;
}

.cat-amount {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--muted);
}

.toast {
  position: fixed;
  bottom: calc(1rem + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--bg);
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  font-size: 0.85rem;
  z-index: 100;
  max-width: 90%;
  text-align: center;
}

.toast.show {
  display: block;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(8px); }
}