:root {
  color-scheme: light;
  --bg: #f4f6f5;
  --surface: #ffffff;
  --paper: #ffffff;
  --ink: #17211d;
  --muted: #64706a;
  --line: #d8dfdc;
  --line-strong: #b8c4bf;
  --accent: #0f766e;
  --accent-strong: #0a5e58;
  --accent-soft: #e8f5f2;
  --warm: #b86112;
  --warm-soft: #fff1df;
  --danger: #b42318;
  --shadow: 0 18px 45px rgba(24, 38, 32, 0.1);
  --radius: 8px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(15, 118, 110, 0.08), transparent 260px),
    var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px clamp(18px, 4vw, 44px);
  border-bottom: 1px solid rgba(15, 118, 110, 0.16);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.1;
}

h2 {
  margin-bottom: 0;
  font-size: 16px;
}

h3 {
  margin-bottom: 10px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.topbar-actions,
.section-heading,
.section-heading.with-action {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.section-heading {
  justify-content: space-between;
  margin: 26px 0 12px;
  padding-top: 2px;
}

.section-heading:first-child {
  margin-top: 0;
}

.button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 9px 14px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
  line-height: 1;
  transition: transform 140ms ease, border-color 140ms ease, background-color 140ms ease, color 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.74);
}

.button.compact {
  min-height: 34px;
  padding: 7px 11px;
  font-size: 13px;
}

.button.ghost {
  width: 100%;
  max-width: 34px;
  min-width: 34px;
  min-height: 34px;
  padding: 7px;
  color: var(--danger);
  font-size: 12px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.78fr);
  gap: 20px;
  padding: 22px clamp(18px, 4vw, 44px) 42px;
}

.workspace > * {
  min-width: 0;
}

.panel,
.invoice-paper {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel {
  border-radius: var(--radius);
}

.form-panel {
  overflow: hidden;
  padding: clamp(16px, 2.6vw, 26px);
}

.preview-shell {
  position: sticky;
  top: 18px;
  align-self: start;
  display: grid;
  gap: 14px;
}

.totals-panel {
  display: grid;
  grid-template-columns: 1.35fr 1fr 0.75fr;
  gap: 12px;
  padding: 14px;
}

.totals-panel > div {
  min-width: 0;
}

.mini-label {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.totals-panel strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 19px;
}

.field-grid {
  display: grid;
  gap: 12px;
}

.field-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.field-grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.party-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

fieldset {
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

legend {
  padding: 0 6px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0;
}

label {
  display: grid;
  gap: 6px;
  min-width: 0;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

label + label,
fieldset .field-grid {
  margin-top: 12px;
}

input,
select,
textarea {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 9px 10px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 600;
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

textarea {
  min-height: 88px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.14);
}

.table-wrap {
  contain: paint;
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
}

.item-editor {
  min-width: 690px;
  table-layout: fixed;
}

th {
  background: #eef3f1;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 9px;
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.item-editor input,
.item-editor textarea {
  min-height: 36px;
  padding: 7px 8px;
}

.item-editor textarea {
  min-height: 48px;
  resize: vertical;
}

.item-editor .description-cell {
  width: 220px;
}

.item-editor .number-cell {
  width: 74px;
}

.item-editor th,
.item-editor td {
  padding: 6px;
}

.item-editor th:nth-child(6),
.item-editor td:nth-child(6) {
  width: 100px;
}

.item-editor th:nth-child(7),
.item-editor td:nth-child(7) {
  width: 44px;
}

.line-amount {
  display: block;
  min-width: 0;
  padding-top: 8px;
  font-size: 13px;
  font-weight: 900;
  text-align: right;
}

.invoice-paper {
  min-height: 720px;
  border-radius: 4px;
  padding: clamp(22px, 4vw, 34px);
  background: var(--paper);
}

.preview-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  padding-bottom: 20px;
  border-bottom: 3px solid var(--accent);
}

.preview-title {
  margin-bottom: 8px;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.status-chip {
  display: inline-flex;
  border-radius: 6px;
  padding: 5px 8px;
  background: var(--warm-soft);
  color: var(--warm);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.preview-meta {
  min-width: 170px;
  text-align: right;
}

.preview-meta dl,
.summary-list {
  margin: 0;
}

.preview-meta div,
.summary-list div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  padding: 5px 0;
}

.preview-meta dt,
.summary-list dt {
  color: var(--muted);
  font-weight: 800;
}

.preview-meta dd,
.summary-list dd {
  margin: 0;
  font-weight: 900;
}

.preview-parties {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 24px;
}

.address-block {
  overflow-wrap: anywhere;
}

.address-block p {
  margin: 0;
}

.address-block .name {
  margin-bottom: 4px;
  font-size: 16px;
  font-weight: 900;
}

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

.preview-table {
  margin-top: 24px;
  font-size: 13px;
}

.preview-table th,
.preview-table td {
  padding: 9px 7px;
}

.preview-table th {
  background: var(--accent);
  color: #ffffff;
}

.preview-table .num {
  text-align: right;
  white-space: nowrap;
}

.preview-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.45fr);
  gap: 22px;
  align-items: start;
  margin-top: 22px;
}

.document-details {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.document-details strong {
  color: var(--ink);
}

.summary-list .grand {
  margin-top: 5px;
  border-top: 2px solid var(--ink);
  border-bottom: 0;
  padding-top: 9px;
  font-size: 18px;
}

.preview-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 13px;
}

.preview-notes p {
  margin-bottom: 0;
  overflow-wrap: anywhere;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 10;
  max-width: min(360px, calc(100vw - 36px));
  border: 1px solid rgba(15, 118, 110, 0.28);
  border-radius: 6px;
  padding: 10px 12px;
  background: #f7fffd;
  color: var(--accent-strong);
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 800;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

@media (max-width: 1120px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .preview-shell {
    position: static;
  }
}

@media (max-width: 780px) {
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions {
    justify-content: stretch;
  }

  .topbar-actions .button {
    flex: 1;
  }

  .field-grid.two,
  .field-grid.three,
  .field-grid.four,
  .party-grid,
  .preview-parties,
  .preview-summary,
  .preview-notes {
    grid-template-columns: 1fr;
  }

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

  .preview-header {
    grid-template-columns: 1fr;
  }

  .preview-meta {
    text-align: left;
  }
}

@media print {
  body {
    background: #ffffff;
  }

  .topbar,
  .form-panel,
  .totals-panel,
  .toast {
    display: none;
  }

  .workspace {
    display: block;
    padding: 0;
  }

  .preview-shell {
    display: block;
  }

  .invoice-paper {
    min-height: auto;
    border: 0;
    box-shadow: none;
  }
}