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

:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --bg: #f5f5f5;
  --card: #ffffff;
  --border: #ddd;
  --text: #222;
  --muted: #888;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding: 0;
  min-height: 100vh;
}

#app-root { max-width: 600px; margin: 0 auto; padding: 16px; }

.screen { animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

h1 { font-size: 1.4rem; margin-bottom: 16px; color: var(--text); }
h2 { font-size: 1.1rem; margin-bottom: 4px; }
h3 { font-size: 0.95rem; color: var(--text); margin-bottom: 4px; }

label { display: block; margin-bottom: 12px; font-size: 0.85rem; font-weight: 600; color: var(--text); }
input, textarea, select {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 1rem; background: var(--card); outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(26,115,232,0.15); }
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; }
.business-screen input[type=text], .business-screen textarea,
.client-screen input[type=text], .client-screen textarea { text-transform: capitalize; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 20px; border: none; border-radius: var(--radius);
  font-size: 1rem; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }

.nav-buttons { display: flex; gap: 8px; margin-top: 20px; justify-content: space-between; }

.logo-upload { margin-bottom: 12px; }
.logo-preview { max-width: 120px; max-height: 60px; display: block; margin-bottom: 8px; }
.pro-gate { background: #f0f4ff; border: 1px dashed var(--primary); border-radius: var(--radius); padding: 20px; text-align: center; margin-bottom: 16px; }
.business-screen #next-btn { width: 100%; }
.pro-gate p { font-size: 0.9rem; color: var(--text); margin-bottom: 8px; }
.pro-gate .btn { margin-top: 8px; }
.free-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; margin-bottom: 20px; }
.free-card p { font-size: 0.9rem; color: var(--text); margin-bottom: 4px; }

.items-header { display: grid; grid-template-columns: 2fr 60px 80px 50px 60px; gap: 4px; font-size: 0.75rem; font-weight: 600; color: var(--muted); padding: 0 4px 4px; }
.item-row { display: grid; grid-template-columns: 2fr 60px 80px 50px 60px 30px; gap: 4px; align-items: center; margin-bottom: 6px; }
.item-row input { padding: 8px; margin-top: 0; font-size: 0.9rem; }
.item-total { font-size: 0.9rem; font-weight: 600; text-align: right; padding-right: 4px; }
.taxable-label { display: flex; align-items: center; gap: 2px; font-size: 0.75rem; color: var(--muted); cursor: pointer; justify-content: center; }
.taxable-label input { width: 16px; height: 16px; margin: 0; padding: 0; cursor: pointer; }
.btn-icon { background: none; border: none; color: #c00; font-size: 1.2rem; cursor: pointer; padding: 4px; }
#add-item { margin: 8px 0; font-size: 0.85rem; }

.items-summary { margin: 12px 0; padding: 8px 4px; border-top: 2px solid var(--text); }
.summary-row { display: flex; justify-content: space-between; align-items: center; padding: 3px 0; font-size: 0.9rem; }
.summary-row.total { border-top: 2px solid var(--text); margin-top: 4px; padding-top: 8px; font-size: 1.1rem; }
.tax-rate { width: 60px; display: inline; margin-top: 0; padding: 4px 6px; font-size: 0.9rem; }
.tax-rate-group { white-space: nowrap; }

.estimate-page {
  background: var(--card); padding: 24px; border-radius: var(--radius);
  margin-bottom: 16px; box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.estimate-page .preview-logo { max-width: 150px; max-height: 60px; margin-bottom: 12px; }
.preview-header { margin-bottom: 16px; }
.preview-header p { font-size: 0.85rem; color: var(--text); }
.preview-client { margin-bottom: 16px; padding: 12px; background: #fafafa; border-radius: 4px; }
.preview-client p { font-size: 0.85rem; color: var(--text); }

.estimate-table { width: 100%; border-collapse: collapse; margin-bottom: 12px; }
.estimate-table th { text-align: left; font-size: 0.75rem; color: var(--text); padding: 6px 4px; border-bottom: 1px solid var(--border); }
.estimate-table td { padding: 6px 4px; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.estimate-table td:last-child, .estimate-table th:last-child { text-align: right; }
.estimate-table tfoot td { border-bottom: none; padding-top: 8px; font-size: 1rem; }

.preview-notes { font-size: 0.85rem; color: var(--text); margin: 8px 0; padding: 8px; background: #fafafa; border-radius: 4px; }
.valid-until { font-size: 0.8rem; color: var(--text); margin-top: 8px; }

.watermark { text-align: center; font-size: 0.75rem; color: #ccc; margin-top: 16px; padding-top: 12px; border-top: 1px solid #eee; }

#share-result { margin-top: 12px; font-size: 0.85rem; color: var(--muted); text-align: center; }

#pro-badge {
  position: fixed; top: 8px; right: 8px; z-index: 999;
  background: var(--primary); color: #fff;
  font-size: 11px; font-weight: 700; padding: 3px 10px;
  border-radius: 12px; letter-spacing: 0.3px;
}

@media print {
  body { background: none; padding: 0; }
  .nav-buttons, #pro-badge, #share-result { display: none !important; }
  .estimate-page { box-shadow: none; padding: 0; margin: 0; }
  .watermark { display: block !important; }
}

@media (max-width: 480px) {
  .item-row { grid-template-columns: 1fr 1fr auto; gap: 4px; position: relative; }
  .item-row .item-desc { grid-column: 1 / -1; }
  .item-row .item-total { text-align: right; padding-right: 0; }
  .items-header { grid-template-columns: 1fr 60px 50px 60px; }
  .items-header span:first-child { display: none; }
  .summary-row { font-size: 0.85rem; }
  .summary-row.total { font-size: 1rem; }
}