:root {
  --bg: #f7f5f2;
  --panel: #ffffff;
  --border: #e2ddd5;
  --text: #2b2723;
  --muted: #746a5e;
  --accent: #a8791f;
  --accent-dark: #8a6216;
  --accent-darker: #74510f;
  --danger: #b3402c;
  --radius: 8px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
}

* { box-sizing: border-box; }

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

header.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

header.topbar h1 {
  font-size: 18px;
  margin: 0;
  letter-spacing: 0.02em;
}

nav.tabs {
  display: flex;
  gap: 6px;
}

nav.tabs a {
  padding: 8px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

nav.tabs a.active {
  background: var(--accent-dark);
  color: #fff;
}

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

main {
  max-width: 980px;
  margin: 24px auto;
  padding: 0 24px 60px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.panel h2 {
  margin-top: 0;
  font-size: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  align-items: end;
}

#payment-form .form-grid {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

input, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}

input:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
}

/* Checkboxes should stay their native size, not stretch to 100% width. */
input[type="checkbox"] {
  width: auto;
  padding: 0;
  margin: 0;
  cursor: pointer;
  accent-color: var(--accent);
}

button {
  cursor: pointer;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent-dark);
  outline-offset: 2px;
}

button.primary {
  background: var(--accent-dark);
  color: #fff;
}
button.primary:hover:not(:disabled) { background: var(--accent-darker); }

button.secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}
button.secondary:hover:not(:disabled) { background: #f1ede7; }

button.link {
  background: none;
  color: var(--accent);
  padding: 10px 12px;
}
button.danger-link {
  background: none;
  color: var(--danger);
  padding: 10px 12px;
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tbody tr:hover { background: #faf8f5; }

.row-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.row-between h2 { margin: 0; }

.button-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

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

.empty-state {
  color: var(--muted);
  font-size: 14px;
  padding: 16px 0;
  text-align: center;
}

.error-banner {
  background: #fbe9e6;
  color: var(--danger);
  border: 1px solid #f0c6be;
  border-radius: 6px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 14px;
  display: none;
}

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--text);
  color: #fff;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.2s ease;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

.row-actions { white-space: nowrap; }

#import-file-input { display: none; }

.remove-item-btn {
  background: none;
  color: var(--danger);
  font-size: 18px;
  line-height: 1;
  padding: 10px 12px;
}

.invoice {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  background: #fffdfa;
}

.paid-stamp {
  position: absolute;
  top: 150px;
  right: 30px;
  color: #2e7d46;
  border: 3px solid #2e7d46;
  border-radius: 6px;
  padding: 2px 14px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transform: rotate(-12deg);
  opacity: 0.85;
  pointer-events: none;
}

.invoice-header {
  border-bottom: 2px solid var(--accent);
  padding-bottom: 16px;
  margin-bottom: 16px;
}

.invoice-header .brand-center {
  text-align: center;
  margin-bottom: 12px;
}

.invoice-header .brand-center h3 {
  margin: 0 0 4px 0;
  font-size: 22px;
  color: var(--accent-dark);
  letter-spacing: 0.03em;
}

.invoice-header .brand-center .brand-address {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.invoice-header .brand-center .brand-phones {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.invoice-header .meta-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
}

.invoice-header .meta-row strong {
  color: var(--text);
  font-size: 15px;
}

.invoice-client {
  margin-bottom: 20px;
  font-size: 14px;
}

.invoice-client .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 4px;
}

.invoice-client .name {
  font-size: 16px;
  font-weight: 600;
}

.invoice-client .detail-line {
  color: var(--muted);
  font-size: 13px;
}

.invoice table {
  margin-bottom: 4px;
}

.invoice tfoot td {
  border-bottom: none;
  border-top: 1px solid var(--border);
  font-weight: 600;
}

.invoice tfoot td.cash-incl {
  border-top: none;
  font-weight: 400;
  font-size: 12px;
  color: var(--muted);
  padding-top: 0;
}

.invoice tfoot tr.grand-total td {
  font-size: 15px;
  color: var(--accent-dark);
  border-top: 2px solid var(--accent);
}

.invoice-footer {
  margin-top: 28px;
  text-align: center;
}

.invoice-qr {
  display: block;
  width: 110px;
  height: 110px;
  margin: 0 auto 8px;
  /* Browsers may drop backgrounds when printing; keep the QR solid black. */
  print-color-adjust: exact;
  -webkit-print-color-adjust: exact;
}

.invoice-website {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.invoice-empty {
  color: var(--muted);
  text-align: center;
  padding: 30px 0;
  font-size: 14px;
}

.toggle-row {
  display: flex;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.toggle-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}

.toggle-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: relative;
  width: 36px;
  height: 20px;
  background: #d8d2c8;
  border-radius: 999px;
  transition: background 0.15s ease;
  flex-shrink: 0;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.15s ease;
}

.toggle-switch:has(input:disabled) {
  opacity: 0.5;
  cursor: not-allowed;
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--accent);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(16px);
}

.balance-summary {
  display: flex;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.balance-tile {
  background: #fdf8ef;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  min-width: 180px;
}

.balance-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 6px;
}

.balance-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent-dark);
}

.dashboard-tiles .balance-tile {
  flex: 1 1 180px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}

.stat-tile {
  background: #fffdfa;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
}

.stat-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 6px;
}

.stat-value {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

@media (max-width: 640px) {
  header.topbar {
    padding: var(--space-3) var(--space-4);
  }

  main {
    padding: 0 var(--space-4) var(--space-7);
    margin: var(--space-4) auto;
  }

  .panel {
    padding: var(--space-4);
  }

  .row-between {
    align-items: flex-start;
  }

  .balance-tile {
    flex: 1 1 140px;
    padding: var(--space-3) var(--space-4);
  }
}