:root {
  --bg: #0b0b0c;
  --panel: #121214;
  --panel-2: #18181b;
  --text: #f5f5f5;
  --muted: #a1a1aa;
  --border: #27272a;
  --accent: #ffffff;
  --accent-text: #0b0b0c;
  --soft: #1f1f23;
  --success-bg: #1f2a22;
  --success-text: #d4f7dd;
  --danger: #7f1d1d;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, #1a1a1f 0%, #0b0b0c 40%),
    linear-gradient(180deg, #0b0b0c 0%, #09090b 100%);
  color: var(--text);
}

.wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(18, 18, 20, 0.92);
  box-shadow: var(--shadow);
}

h1 {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.02em;
}

.sub {
  color: var(--muted);
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.5;
  max-width: 760px;
}

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

button,
.tab-link,
.btn-link {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: 0.18s ease;
}

button:hover,
.tab-link:hover,
.btn-link:hover {
  transform: translateY(-1px);
}

.tab-link,
.ghost-btn {
  background: var(--panel-2);
  color: var(--text);
}

.tab-link.active {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

.primary-btn {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

.danger-btn {
  background: #2a1111;
  color: #ffd7d7;
  border-color: #4b1d1d;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
  gap: 22px;
  align-items: start;
}

.card {
  background: rgba(18, 18, 20, 0.96);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 24px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.card p.helper {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.section {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(31,31,35,0.72) 0%, rgba(18,18,20,0.9) 100%);
}

.section:first-of-type {
  margin-top: 0;
}

.section h3 {
  margin: 0 0 14px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.fields.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.field,
.line-item {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

label {
  font-size: 13px;
  font-weight: 700;
  color: #e5e5e5;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #313136;
  border-radius: 14px;
  padding: 12px 13px;
  font-size: 14px;
  background: #0f0f11;
  color: var(--text);
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: #7b7b85;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #66666f;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.08);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.inline-checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid #2f2f34;
  border-radius: 16px;
  padding: 13px 14px;
  background: #101013;
  min-height: 52px;
  color: var(--text);
}

.checkbox input {
  width: auto;
  margin: 0;
  accent-color: #ffffff;
}

.results {
  position: sticky;
  top: 18px;
}

.summary-box {
  background: linear-gradient(180deg, #16161a 0%, #101012 100%);
}

.money {
  font-size: 36px;
  font-weight: 800;
  margin: 10px 0 6px;
  letter-spacing: -0.02em;
}

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

.price-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.compare-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #101013;
  padding: 16px;
}

.compare-card-accent {
  background: #f5f5f5;
  color: #111111;
  border-color: #ffffff;
}

.compare-card-accent .compare-label,
.compare-card-accent .compare-note {
  color: #3f3f46;
}

.compare-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.compare-money {
  font-size: 28px;
  font-weight: 800;
  margin-top: 6px;
}

.compare-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

.breakdown {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed #2d2d32;
}

.breakdown-row.total {
  font-weight: 800;
  font-size: 16px;
  border-bottom: 0;
  padding-top: 8px;
}

.pill {
  display: inline-block;
  background: var(--success-bg);
  color: var(--success-text);
  padding: 8px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  margin-top: 10px;
}

.hidden { display: none; }

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.settings-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.footer-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.quote-box {
  white-space: pre-wrap;
  background: #08080a;
  color: #ececf1;
  border: 1px solid #232327;
  border-radius: 16px;
  padding: 16px;
  font-size: 13px;
  line-height: 1.65;
  margin-top: 16px;
}

.invoice-print-area {
  display: none;
}

.invoice-sheet {
  background: #ffffff;
  color: #111827;
  padding: 32px;
  font-family: Arial, Helvetica, sans-serif;
}

.invoice-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  border-bottom: 2px solid #e5e7eb;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.invoice-title {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 8px;
}

.invoice-meta,
.invoice-block,
.invoice-total-row,
.invoice-line {
  font-size: 14px;
  line-height: 1.5;
}

.invoice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 20px;
}

.invoice-block-title {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: #6b7280;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.invoice-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.invoice-table th,
.invoice-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid #e5e7eb;
  font-size: 14px;
  vertical-align: top;
}

.invoice-table th:last-child,
.invoice-table td:last-child {
  text-align: right;
}

.invoice-totals {
  margin-top: 18px;
  margin-left: auto;
  width: 320px;
  max-width: 100%;
}

.invoice-total-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid #e5e7eb;
}

.invoice-total-row.grand-total {
  font-size: 18px;
  font-weight: 800;
  border-bottom: 2px solid #111827;
}

.invoice-notes {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid #e5e7eb;
  white-space: pre-wrap;
}

@media (max-width: 980px) {
  .grid,
  .fields,
  .fields.three,
  .settings-list,
  .inline-checks,
  .price-compare {
    grid-template-columns: 1fr;
  }

  .results {
    position: static;
  }

  .wrap {
    padding: 16px;
  }

  .topbar,
  .card {
    padding: 18px;
  }
}

@media print {
  body * {
    visibility: hidden !important;
  }

  #invoicePrintArea,
  #invoicePrintArea * {
    visibility: visible !important;
  }

  #invoicePrintArea {
    display: block !important;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: #ffffff;
  }

  .invoice-sheet {
    padding: 20px;
  }
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 14px 0 14px;
}

.mini-summary-card {
  min-width: 0;
  border: 1px solid var(--border);
  background: #101013;
  border-radius: 16px;
  padding: 14px;
}

.summary-cards .mini-summary-card:first-child {
  grid-column: 1 / -1;
  padding: 16px 18px;
}

.summary-cards .mini-summary-card:first-child .mini-summary-value {
  font-size: clamp(30px, 4vw, 42px);
}

.mini-summary-value {
  min-width: 0;
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 800;
  margin-top: 6px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.warning-box {
  margin: 0 0 14px;
  border: 1px solid #5c2e11;
  background: #2a180d;
  color: #ffd9b3;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 700;
}

.conditional-group {
  margin-top: 16px;
  padding: 16px;
  border: 1px dashed #3a3a40;
  border-radius: 16px;
  background: rgba(12, 12, 14, 0.55);
}

.conditional-title {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.conditional-checks {
  margin-top: 10px;
}

@media (max-width: 980px) {
  .summary-cards {
    grid-template-columns: 1fr;
  }

  .summary-cards .mini-summary-card:first-child {
    grid-column: auto;
  }
}