:root {
  --bg-page: #0f172a;
  --bg-surface: #1e293b;
  --bg-elevated: #283548;
  --bg-input: #0f172a;
  --border-subtle: rgba(148, 163, 184, 0.14);
  --border-focus: #6366f1;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --indigo-accent: #6366f1;
  --indigo-soft: rgba(99, 102, 241, 0.15);

  --emerald-accent: #10b981;
  --emerald-soft: rgba(16, 185, 129, 0.15);

  --amber-accent: #f59e0b;
  --amber-soft: rgba(245, 158, 11, 0.15);

  --danger: #ef4444;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.45;
  min-height: 100vh;
  padding: 20px 24px 48px;
}

.app-shell {
  max-width: 1560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 14px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.brand h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Month Controls */
.month-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-input);
  padding: 5px 8px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.month-display {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 185px;
  padding: 2px 12px;
  cursor: pointer;
}

.month-label {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: capitalize;
  pointer-events: none;
  line-height: 1.25;
}

.due-date-label {
  font-size: 0.74rem;
  color: var(--text-muted);
  pointer-events: none;
  line-height: 1.2;
}

.month-picker-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.icon-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-main);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.save-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(15, 23, 42, 0.6);
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
}

.save-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
}

.save-badge.saving .dot {
  background: #f59e0b;
  animation: pulse 0.9s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--indigo-accent);
  color: #fff;
}

.btn-primary:hover {
  background: #4f46e5;
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: #334155;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

/* Summary Strip */
.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.summary-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
  position: relative;
  overflow: hidden;
}

.summary-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}

.summary-card.theme-indigo::before { background: var(--indigo-accent); }
.summary-card.theme-emerald::before { background: var(--emerald-accent); }
.summary-card.theme-amber::before { background: var(--amber-accent); }
.summary-card.theme-grand {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(16, 185, 129, 0.12));
  border-color: rgba(99, 102, 241, 0.35);
}
.summary-card.theme-grand::before { background: #a855f7; }

.summary-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.summary-amount {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.summary-sub {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Main 3-Column Board */
.board-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.person-column {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.person-header {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.person-column.theme-indigo .person-header { background: linear-gradient(to right, rgba(99, 102, 241, 0.12), transparent); }
.person-column.theme-emerald .person-header { background: linear-gradient(to right, rgba(16, 185, 129, 0.12), transparent); }
.person-column.theme-amber .person-header { background: linear-gradient(to right, rgba(245, 158, 11, 0.12), transparent); }

.person-name-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.person-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.theme-indigo .person-dot { background: var(--indigo-accent); }
.theme-emerald .person-dot { background: var(--emerald-accent); }
.theme-amber .person-dot { background: var(--amber-accent); }

.person-name-input {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  width: 100%;
  transition: all 0.15s;
}

.person-name-input:hover {
  border-color: var(--border-subtle);
  background: rgba(15, 23, 42, 0.35);
}

.person-name-input:focus {
  outline: none;
  border-color: var(--border-focus);
  background: var(--bg-input);
}

.person-header-total {
  text-align: right;
  flex-shrink: 0;
}

.person-header-total .label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.person-header-total .val {
  font-size: 1.05rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* Expense Table inside column */
.expense-table-header {
  display: grid;
  grid-template-columns: 1fr 92px 112px 30px;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(15, 23, 42, 0.45);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.expense-list {
  display: flex;
  flex-direction: column;
  divide-y: 1px solid var(--border-subtle);
  min-height: 120px;
}

.empty-state {
  padding: 32px 16px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.expense-row {
  display: grid;
  grid-template-columns: 1fr 92px 112px 30px;
  gap: 8px;
  align-items: center;
  padding: 8px 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  transition: background 0.12s ease;
}

.expense-row:hover {
  background: rgba(255, 255, 255, 0.025);
}

/* Inline Editable Inputs */
.cell-input {
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-main);
  font-size: 0.88rem;
  padding: 5px 7px;
  border-radius: var(--radius-sm);
  transition: all 0.12s ease;
}

.cell-input:hover {
  border-color: var(--border-subtle);
  background: rgba(15, 23, 42, 0.4);
}

.cell-input:focus {
  outline: none;
  border-color: var(--border-focus);
  background: var(--bg-input);
}

.cell-amount {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* Installment x de x widget */
.installment-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px 4px;
}

.installment-box.is-installment {
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(99, 102, 241, 0.1);
}

.inst-input {
  width: 30px;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  font-variant-numeric: tabular-nums;
  padding: 3px 0;
  -moz-appearance: textfield;
}

.inst-input::-webkit-outer-spin-button,
.inst-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.inst-input:focus {
  outline: none;
  background: var(--bg-input);
  border-radius: 3px;
}

.inst-sep {
  font-size: 0.72rem;
  color: var(--text-muted);
  user-select: none;
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.55;
  transition: all 0.15s;
}

.expense-row:hover .delete-btn {
  opacity: 1;
}

.delete-btn:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

/* Quick Add Form inside each column */
.add-expense-form {
  display: grid;
  grid-template-columns: 1fr 92px 112px 34px;
  gap: 8px;
  align-items: center;
  padding: 12px 14px;
  background: rgba(15, 23, 42, 0.65);
  border-top: 1px solid var(--border-subtle);
}

.add-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 0.85rem;
  padding: 7px 9px;
  border-radius: var(--radius-sm);
}

.add-input:focus {
  outline: none;
  border-color: var(--border-focus);
}

.add-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--indigo-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.1s, background 0.15s;
}

.theme-emerald .add-btn { background: var(--emerald-accent); }
.theme-amber .add-btn { background: var(--amber-accent); }

.add-btn:hover {
  filter: brightness(1.1);
}

/* Column Footer Totals */
.person-footer {
  padding: 14px 18px;
  background: rgba(15, 23, 42, 0.85);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.person-footer-total {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.person-footer-total span:first-child {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.person-footer-total .total-num {
  font-size: 1.2rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.theme-indigo .total-num { color: #818cf8; }
.theme-emerald .total-num { color: #34d399; }
.theme-amber .total-num { color: #fbbf24; }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 440px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal h3 {
  font-size: 1.1rem;
}

.modal p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  padding: 10px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 6px;
}

.hidden {
  display: none !important;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1e293b;
  border: 1px solid rgba(99, 102, 241, 0.5);
  color: #f8fafc;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  box-shadow: var(--shadow-card);
  z-index: 200;
}

/* Login Screen */
.login-screen {
  min-height: calc(100vh - 68px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 460px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.login-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.login-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

.login-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.profile-tile {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  text-align: left;
  color: var(--text-main);
  transition: all 0.15s ease;
}

.profile-tile:hover {
  border-color: rgba(148, 163, 184, 0.35);
  background: var(--bg-elevated);
}

.profile-tile.active {
  border-color: var(--indigo-accent);
  background: rgba(99, 102, 241, 0.14);
  box-shadow: 0 0 0 1px var(--indigo-accent);
}

.profile-tile-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.92rem;
}

.profile-tile-sub {
  font-size: 0.74rem;
  color: var(--text-muted);
}

.profile-tile-sub.no-pwd {
  color: #f59e0b;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.login-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 0.95rem;
  padding: 10px 12px;
  border-radius: var(--radius-md);
}

.login-input:focus {
  outline: none;
  border-color: var(--border-focus);
}

.login-hint {
  font-size: 0.76rem;
  color: var(--text-dim);
}

.login-error {
  background: rgba(239, 68, 68, 0.14);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: 0.84rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 11px 16px;
  font-size: 0.92rem;
}

.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #e0e7ff;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.4);
  padding: 5px 11px;
  border-radius: 999px;
}

/* Single Person Layout Mode */
.board-grid.single-person-mode {
  grid-template-columns: minmax(0, 820px);
  justify-content: center;
}

.summary-strip.single-person-mode {
  grid-template-columns: minmax(0, 820px);
  justify-content: center;
}

/* Password Config Modal */
.modal-lg {
  max-width: 500px;
}

.password-config-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.password-fields-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pwd-person-row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: rgba(15, 23, 42, 0.45);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.pwd-person-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
}

.pwd-status-tag {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
}

.pwd-status-tag.configured {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.pwd-status-tag.pending {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}

.modal-divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 4px 0;
}

/* Pending Approval Workflow Styles */
.expense-item-wrap {
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  transition: background 0.15s ease;
}

.expense-item-wrap .expense-row {
  border-bottom: none;
}

.expense-item-wrap.is-pending {
  background: rgba(245, 158, 11, 0.06);
  border-left: 3px solid var(--amber-accent);
}

.expense-item-wrap.is-pending-delete {
  background: rgba(239, 68, 68, 0.07);
  border-left: 3px solid var(--danger);
}

.expense-item-wrap.is-pending-delete .cell-input,
.expense-item-wrap.is-pending-delete .inst-input {
  text-decoration: line-through;
  opacity: 0.65;
}

.pending-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 14px 8px;
  font-size: 0.75rem;
}

.pending-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  color: #fbbf24;
}

.is-pending-delete .pending-info {
  color: #f87171;
}

.pending-tag {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.18);
}

.is-pending-delete .pending-tag {
  background: rgba(239, 68, 68, 0.2);
}

.pending-diff {
  color: var(--text-muted);
  font-size: 0.74rem;
}

.pending-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.btn-approve,
.btn-reject {
  border: none;
  border-radius: 5px;
  padding: 3px 9px;
  font-size: 0.73rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: filter 0.15s;
}

.btn-approve {
  background: var(--emerald-accent);
  color: #052e16;
}

.btn-reject {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.btn-approve:hover,
.btn-reject:hover {
  filter: brightness(1.12);
}

/* Responsive */
@media (max-width: 1200px) {
  .board-grid {
    grid-template-columns: 1fr;
  }
  .summary-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  body {
    padding: 12px;
  }
  .summary-strip {
    grid-template-columns: 1fr;
  }
  .profile-grid {
    grid-template-columns: 1fr;
  }
  .expense-table-header,
  .expense-row,
  .add-expense-form {
    grid-template-columns: 1fr 82px 92px 28px;
    gap: 5px;
    padding-left: 10px;
    padding-right: 10px;
  }
}