/* ============================================================================
   Luxembourg Invoice Generator
   Prefix: lxi-   Accent: #0e7490 (deep cyan) + amber #9a6212

   Layout intent: a two-column studio. The form on the left, a live A4 sheet
   on the right, so a change to a VAT number or a supply type is visible on
   the document immediately rather than after a "generate" step.

   The sheet is deliberately exempt from the site's dark theme. Paper is
   white, the PDF will be white, and a dark preview of a light document
   teaches the user the wrong thing about what they are about to send. Every
   other surface follows the theme.

   On a phone the two columns cannot coexist, so they become tabs: Edit and
   Preview, with Edit first.
   ============================================================================ */

.lxi-page {
  --lxi-accent: #0e7490;
  --lxi-accent-deep: #0b5a70;
  --lxi-accent-soft: rgba(14, 116, 144, .09);
  --lxi-accent-line: rgba(14, 116, 144, .22);
  --lxi-amber: #9a6212;
  --lxi-amber-soft: rgba(154, 98, 18, .11);

  --lxi-bg: #eef3f5;
  --lxi-grad:
    radial-gradient(900px 460px at 6% -10%, rgba(14, 116, 144, .10), transparent 58%),
    radial-gradient(760px 400px at 100% 0%, rgba(154, 98, 18, .05), transparent 54%);

  --lxi-surface: #ffffff;
  --lxi-soft: #f3f7f8;
  --lxi-text: #12222a;
  --lxi-text-2: #52646d;
  --lxi-text-3: #7f9099;
  --lxi-border: #dbe4e8;
  --lxi-border-strong: #bccbd1;

  --lxi-ok: #0f7b4f;
  --lxi-ok-soft: rgba(15, 123, 79, .1);
  --lxi-warn: #9a6212;
  --lxi-warn-soft: rgba(154, 98, 18, .12);
  --lxi-danger: #b42318;
  --lxi-danger-soft: rgba(180, 35, 24, .09);

  --lxi-r-lg: 18px;
  --lxi-r-md: 12px;
  --lxi-r-sm: 8px;
  --lxi-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --lxi-shadow: 0 1px 2px rgba(18, 34, 42, .05), 0 10px 28px rgba(18, 34, 42, .07);

  background: var(--lxi-bg) !important;
  background-image: var(--lxi-grad) !important;
  background-attachment: fixed !important;
  color: var(--lxi-text);
}

[data-theme="dark"] .lxi-page {
  --lxi-accent: #38bdf8;
  --lxi-accent-deep: #7dd3fc;
  --lxi-accent-soft: rgba(56, 189, 248, .12);
  --lxi-accent-line: rgba(56, 189, 248, .28);
  --lxi-amber: #e0a94e;
  --lxi-amber-soft: rgba(224, 169, 78, .12);

  --lxi-bg: #06141b;
  --lxi-grad:
    radial-gradient(900px 460px at 6% -10%, rgba(56, 189, 248, .10), transparent 58%),
    radial-gradient(760px 400px at 100% 0%, rgba(224, 169, 78, .05), transparent 54%);

  --lxi-surface: #0d1c24;
  --lxi-soft: #112630;
  --lxi-text: #e7f1f5;
  --lxi-text-2: #9fb3bc;
  --lxi-text-3: #748b95;
  --lxi-border: #1d3540;
  --lxi-border-strong: #2b4854;

  --lxi-ok: #4ade80;
  --lxi-ok-soft: rgba(74, 222, 128, .12);
  --lxi-warn: #fbbf24;
  --lxi-warn-soft: rgba(251, 191, 36, .12);
  --lxi-danger: #f87171;
  --lxi-danger-soft: rgba(248, 113, 113, .12);

  --lxi-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .38);
}

/* ---------------------------------------------------------------- shell -- */

.lxi-wrap {
  width: min(1360px, 94vw);
  margin: 0 auto;
  padding: calc(var(--header-overlap, 5.5rem) + 1rem) 0 4rem;
}

.lxi-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  align-items: center;
  font-size: .82rem;
  font-weight: 700;
  color: var(--lxi-text-3);
  margin-bottom: 1rem;
}
.lxi-crumb a { color: var(--lxi-text-2); }
.lxi-crumb a:hover { color: var(--lxi-accent); text-decoration: underline; }

.lxi-hero {
  background: var(--lxi-surface);
  border: 1px solid var(--lxi-border);
  border-radius: var(--lxi-r-lg);
  box-shadow: var(--lxi-shadow);
  padding: clamp(1.25rem, 3vw, 2.25rem);
  margin-bottom: 1.25rem;
}

.lxi-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 .6rem;
  font-size: .74rem;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--lxi-accent);
}
.lxi-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--lxi-accent);
}

.lxi-h1 {
  margin: 0 0 .7rem;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}

.lxi-lede {
  margin: 0;
  max-width: 68ch;
  color: var(--lxi-text-2);
  font-size: clamp(.96rem, 1.5vw, 1.05rem);
}

.lxi-trust {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  font-size: .84rem;
  font-weight: 700;
  color: var(--lxi-text-2);
}

/* ---------------------------------------------------------------- tabs --- */

/* Only visible on narrow screens, where the two panes cannot sit together. */
.lxi-tabs {
  display: none;
  gap: .4rem;
  background: var(--lxi-surface);
  border: 1px solid var(--lxi-border);
  border-radius: 999px;
  padding: .3rem;
  margin-bottom: 1rem;
}
.lxi-tabs button {
  flex: 1;
  border: 0;
  background: transparent;
  border-radius: 999px;
  padding: .55rem .8rem;
  font-weight: 800;
  font-size: .88rem;
  color: var(--lxi-text-2);
  cursor: pointer;
}
.lxi-tabs button[aria-pressed="true"] {
  background: var(--lxi-accent);
  color: #fff;
}

/* --------------------------------------------------------------- studio -- */

.lxi-studio {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  gap: 1.25rem;
  align-items: start;
}

.lxi-panel {
  background: var(--lxi-surface);
  border: 1px solid var(--lxi-border);
  border-radius: var(--lxi-r-lg);
  box-shadow: var(--lxi-shadow);
  padding: clamp(1rem, 2.2vw, 1.5rem);
  margin-bottom: 1.25rem;
}

.lxi-panel__title {
  margin: 0 0 .25rem;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}
.lxi-panel__note {
  margin: 0 0 1rem;
  font-size: .86rem;
  color: var(--lxi-text-2);
}

.lxi-h3 {
  margin: 1.5rem 0 .7rem;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--lxi-text-3);
  border-top: 1px solid var(--lxi-border);
  padding-top: 1.1rem;
}
.lxi-h3:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }

/* ---------------------------------------------------------------- form --- */

.lxi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .85rem;
}
.lxi-field { display: flex; flex-direction: column; gap: .32rem; min-width: 0; }
.lxi-field--wide { grid-column: 1 / -1; }

.lxi-label {
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--lxi-text-2);
}

.lxi-input,
.lxi-select,
.lxi-textarea {
  width: 100%;
  border: 1px solid var(--lxi-border-strong);
  border-radius: var(--lxi-r-sm);
  background: var(--lxi-soft);
  color: var(--lxi-text);
  padding: .55rem .65rem;
  font-size: .92rem;
}
.lxi-textarea { resize: vertical; min-height: 74px; line-height: 1.45; }
.lxi-input:focus-visible,
.lxi-select:focus-visible,
.lxi-textarea:focus-visible {
  outline: 2px solid var(--lxi-accent);
  outline-offset: 1px;
  background: var(--lxi-surface);
}
.lxi-input--mono { font-family: var(--lxi-mono); letter-spacing: .04em; }

.lxi-hint { font-size: .76rem; color: var(--lxi-text-3); line-height: 1.4; }

/* Validation feedback under the VAT and IBAN fields. The three states are
   genuinely different — a checksum that passes is not the same claim as a
   shape that looks right — so they do not share a colour. */
.lxi-check {
  display: flex;
  align-items: flex-start;
  gap: .4rem;
  font-size: .76rem;
  font-weight: 700;
  line-height: 1.4;
}
.lxi-check[data-level="verified"] { color: var(--lxi-ok); }
.lxi-check[data-level="format"] { color: var(--lxi-amber); }
.lxi-check[data-level="invalid"] { color: var(--lxi-danger); }
.lxi-check[data-level="empty"] { display: none; }
.lxi-check::before { font-weight: 900; }
.lxi-check[data-level="verified"]::before { content: "✓"; }
.lxi-check[data-level="format"]::before { content: "≈"; }
.lxi-check[data-level="invalid"]::before { content: "✕"; }

/* --------------------------------------------------------------- lines --- */

.lxi-lines { display: flex; flex-direction: column; gap: .6rem; }

.lxi-line {
  display: grid;
  grid-template-columns: minmax(0, 2.6fr) 4.5rem 4.5rem minmax(0, 1.3fr) 3.9rem 4.5rem 2rem;
  gap: .4rem;
  align-items: end;
  padding: .6rem;
  border: 1px solid var(--lxi-border);
  border-radius: var(--lxi-r-md);
  background: var(--lxi-soft);
}
.lxi-line .lxi-label { font-size: .68rem; }
.lxi-line .lxi-input,
.lxi-line .lxi-select { background: var(--lxi-surface); padding: .42rem .5rem; font-size: .86rem; }

.lxi-line__total {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: .86rem;
  text-align: right;
  padding-bottom: .48rem;
  white-space: nowrap;
}

.lxi-remove {
  border: 1px solid var(--lxi-border-strong);
  background: var(--lxi-surface);
  color: var(--lxi-text-3);
  border-radius: var(--lxi-r-sm);
  width: 2rem;
  height: 2.15rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}
.lxi-remove:hover { color: var(--lxi-danger); border-color: var(--lxi-danger); }

/* -------------------------------------------------------------- actions -- */

.lxi-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: 1.1rem;
}

.lxi-btn {
  border-radius: 999px;
  border: 1px solid var(--lxi-border-strong);
  background: var(--lxi-surface);
  color: var(--lxi-text);
  font-weight: 800;
  font-size: .87rem;
  padding: .55rem 1rem;
  cursor: pointer;
}
.lxi-btn:hover { border-color: var(--lxi-accent); color: var(--lxi-accent); }
.lxi-btn[disabled] { opacity: .55; cursor: progress; }
.lxi-btn--primary {
  background: var(--lxi-accent);
  border-color: var(--lxi-accent);
  color: #fff;
}
.lxi-btn--primary:hover { background: var(--lxi-accent-deep); border-color: var(--lxi-accent-deep); color: #fff; }
.lxi-btn--ghost { background: transparent; }

.lxi-status {
  margin-top: .8rem;
  font-size: .84rem;
  font-weight: 700;
  min-height: 1.2em;
}
.lxi-status[data-tone="good"] { color: var(--lxi-ok); }
.lxi-status[data-tone="bad"] { color: var(--lxi-danger); }
.lxi-status[data-tone="info"] { color: var(--lxi-text-2); }

/* ------------------------------------------------------------ warnings --- */

.lxi-warnings { list-style: none; margin: 0 0 1rem; padding: 0; display: grid; gap: .45rem; }
.lxi-warning {
  display: flex;
  gap: .5rem;
  align-items: flex-start;
  font-size: .83rem;
  line-height: 1.45;
  border-radius: var(--lxi-r-sm);
  border: 1px solid transparent;
  border-left-width: 3px;
  padding: .5rem .65rem;
}
.lxi-warning[data-level="error"] {
  background: var(--lxi-danger-soft);
  border-left-color: var(--lxi-danger);
  color: var(--lxi-text);
}
.lxi-warning[data-level="info"] {
  background: var(--lxi-accent-soft);
  border-left-color: var(--lxi-accent);
  color: var(--lxi-text);
}
.lxi-warning b { font-weight: 900; }

.lxi-clean {
  display: flex;
  gap: .5rem;
  align-items: center;
  font-size: .85rem;
  font-weight: 800;
  color: var(--lxi-ok);
  background: var(--lxi-ok-soft);
  border-radius: var(--lxi-r-sm);
  padding: .55rem .7rem;
  margin-bottom: 1rem;
}

/* ------------------------------------------------------------- preview --- */

.lxi-panel--preview { position: sticky; top: 1rem; }

.lxi-stage {
  background: var(--lxi-soft);
  border: 1px solid var(--lxi-border);
  border-radius: var(--lxi-r-md);
  padding: 1rem;
  overflow: auto;
}

/* The sheet is a fixed A4 width scaled to fit its column, so the preview is
   a true proportional view of the printed page rather than a reflow of it. */
.lxi-fit { transform-origin: top left; }

.lxi-sheet {
  width: 210mm;
  min-height: 297mm;
  background: #ffffff;
  color: #17222b;
  box-shadow: 0 6px 24px rgba(15, 30, 40, .16);
  padding: 16mm 15mm;
  font-size: 9.6pt;
  line-height: 1.5;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

/* Paper stays paper in dark mode. See the note at the top of this file. */
[data-theme="dark"] .lxi-sheet { background: #ffffff; color: #17222b; }

.lxi-sheet__head {
  display: flex;
  justify-content: space-between;
  gap: 10mm;
  align-items: flex-start;
  border-bottom: 2px solid var(--lxi-doc-accent, #0e7490);
  padding-bottom: 5mm;
  margin-bottom: 6mm;
}
.lxi-sheet__doctype {
  margin: 0 0 1mm;
  font-size: 20pt;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--lxi-doc-accent, #0e7490);
  line-height: 1.05;
}
.lxi-sheet__meta { text-align: right; font-size: 8.8pt; min-width: 52mm; }
.lxi-sheet__meta dl { display: grid; grid-template-columns: auto auto; gap: .8mm 4mm; margin: 0; justify-content: end; }
.lxi-sheet__meta dt { color: #5c6b76; }
.lxi-sheet__meta dd { margin: 0; font-weight: 700; }

.lxi-sheet__parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8mm;
  margin-bottom: 6mm;
}
.lxi-party__label {
  font-size: 7.4pt;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #7b8b96;
  margin: 0 0 1.5mm;
}
.lxi-party__name { font-weight: 900; font-size: 10.6pt; margin: 0 0 1mm; }
.lxi-party__lines { margin: 0; white-space: pre-line; color: #3b4a55; }
.lxi-party__ids { margin: 2mm 0 0; font-size: 8.4pt; color: #3b4a55; }
.lxi-party__ids span { display: block; }

.lxi-sheet__supply {
  font-size: 8.4pt;
  font-weight: 800;
  color: var(--lxi-doc-accent, #0e7490);
  background: color-mix(in srgb, var(--lxi-doc-accent, #0e7490) 8%, #ffffff);
  border-radius: 3px;
  padding: 2mm 3mm;
  margin-bottom: 5mm;
}

.lxi-sheet table { width: 100%; border-collapse: collapse; }

.lxi-items { margin-bottom: 5mm; font-size: 8.8pt; }
.lxi-items th {
  text-align: left;
  font-size: 7.4pt;
  font-weight: 900;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: #6c7c87;
  border-bottom: 1px solid #d6dee4;
  padding: 0 2mm 1.6mm 0;
}
.lxi-items td { padding: 1.8mm 2mm 1.8mm 0; border-bottom: 1px solid #eef2f5; vertical-align: top; }
.lxi-items .lxi-num { text-align: right; padding-right: 0; font-variant-numeric: tabular-nums; white-space: nowrap; }
.lxi-items .lxi-desc { font-weight: 600; }

.lxi-sheet__foot { display: grid; grid-template-columns: 1fr 78mm; gap: 8mm; align-items: start; }

.lxi-vatsum { font-size: 8.2pt; }
.lxi-vatsum caption {
  text-align: left;
  font-size: 7.4pt;
  font-weight: 900;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: #6c7c87;
  padding-bottom: 1.4mm;
}
.lxi-vatsum th, .lxi-vatsum td { padding: 1.1mm 2mm 1.1mm 0; border-bottom: 1px solid #eef2f5; }
.lxi-vatsum th { text-align: left; font-weight: 700; color: #5c6b76; }
.lxi-vatsum td { text-align: right; font-variant-numeric: tabular-nums; }

.lxi-totals { font-size: 9.2pt; }
.lxi-totals th { text-align: left; font-weight: 600; color: #4a5b66; padding: 1.2mm 0; }
.lxi-totals td { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; padding: 1.2mm 0; }
.lxi-totals tr.is-total th, .lxi-totals tr.is-total td {
  border-top: 1.5px solid var(--lxi-doc-accent, #0e7490);
  font-size: 11.5pt;
  font-weight: 900;
  padding-top: 2mm;
  color: var(--lxi-doc-accent, #0e7490);
}

.lxi-sheet__mention {
  margin: 6mm 0 0;
  font-size: 8.4pt;
  font-weight: 700;
  border: 1px solid var(--lxi-doc-accent, #0e7490);
  border-radius: 3px;
  padding: 2.5mm 3mm;
  color: #26333d;
}

.lxi-sheet__blocks { display: grid; grid-template-columns: 1fr 1fr; gap: 8mm; margin-top: 6mm; font-size: 8.4pt; }
.lxi-block h4 {
  margin: 0 0 1.5mm;
  font-size: 7.4pt;
  font-weight: 900;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: #7b8b96;
}
.lxi-block p { margin: 0; white-space: pre-line; color: #3b4a55; }
.lxi-block dl { display: grid; grid-template-columns: auto 1fr; gap: .6mm 3mm; margin: 0; }
.lxi-block dt { color: #6c7c87; }
.lxi-block dd { margin: 0; font-weight: 700; font-family: var(--lxi-mono); font-size: 8pt; }

.lxi-sheet__footer {
  margin-top: 8mm;
  padding-top: 3mm;
  border-top: 1px solid #e3e9ed;
  font-size: 7.6pt;
  color: #8b9aa4;
}

/* ---------------------------------------------------------- article -- */

.lxi-disclaimer {
  margin: 1.5rem 0 0;
  padding: .9rem 1.1rem;
  border-radius: var(--lxi-r-md);
  border: 1px solid var(--lxi-border);
  border-left: 3px solid var(--lxi-amber);
  background: var(--lxi-amber-soft);
  font-size: .84rem;
  line-height: 1.55;
  color: var(--lxi-text-2);
  max-width: 88ch;
}
.lxi-disclaimer strong { color: var(--lxi-text); }

.lxi-section { padding: 2.2rem 0 0; }

.lxi-h2 {
  margin: 0 0 .85rem;
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  letter-spacing: -.015em;
  color: var(--lxi-text);
}

.lxi-prose p,
.lxi-prose li {
  color: var(--lxi-text-2);
  font-size: .95rem;
  line-height: 1.7;
}
.lxi-prose p { margin: 0 0 .9rem; max-width: 74ch; }
.lxi-prose ul { margin: 0 0 .9rem; padding-left: 1.15rem; max-width: 74ch; }
.lxi-prose li { margin-bottom: .4rem; }
.lxi-prose strong { color: var(--lxi-text); }
.lxi-prose em { color: var(--lxi-text); font-style: italic; }
.lxi-prose code {
  font-family: var(--lxi-mono);
  font-size: .88em;
  background: var(--lxi-accent-soft);
  color: var(--lxi-accent);
  border-radius: 4px;
  padding: .1em .35em;
}

.lxi-faq { display: grid; gap: .55rem; max-width: 88ch; }
.lxi-faq-item {
  border: 1px solid var(--lxi-border);
  border-radius: var(--lxi-r-md);
  background: var(--lxi-surface);
  padding: .1rem .95rem;
}
.lxi-faq-item summary {
  cursor: pointer;
  font-weight: 800;
  font-size: .92rem;
  padding: .8rem 0;
  color: var(--lxi-text);
}
.lxi-faq-item summary:focus-visible { outline: 2px solid var(--lxi-accent); outline-offset: 2px; }
.lxi-faq-item[open] summary { color: var(--lxi-accent); }
.lxi-faq-item p {
  margin: 0 0 .9rem;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--lxi-text-2);
}

/* ---------------------------------------------------------- responsive -- */

@media (max-width: 1080px) {
  .lxi-studio { grid-template-columns: minmax(0, 1fr); }
  .lxi-tabs { display: flex; }
  .lxi-panel--preview { position: static; }
  .lxi-studio[data-tab="edit"] .lxi-col--preview { display: none; }
  .lxi-studio[data-tab="preview"] .lxi-col--edit { display: none; }
}

@media (max-width: 760px) {
  .lxi-grid { grid-template-columns: minmax(0, 1fr); }
  .lxi-line { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lxi-line .lxi-field--desc { grid-column: 1 / -1; }
  .lxi-line__total { grid-column: 1 / -1; text-align: left; padding-bottom: 0; }
  .lxi-remove { justify-self: end; }
}

/* --------------------------------------------------------------- print -- */

@media print {
  .site-header, .site-footer, .lxi-crumb, .lxi-hero, .lxi-tabs,
  .lxi-col--edit, .lxi-section, .lxi-disclaimer, .lxi-status,
  .related-tools-section, .skip-link { display: none !important; }

  body.lxi-page, body.lxi-page::before { background: #fff !important; }
  .lxi-wrap { width: auto; padding: 0; }
  .lxi-studio { display: block; }
  .lxi-col--preview { display: block !important; }
  .lxi-panel--preview { position: static; box-shadow: none; border: 0; padding: 0; margin: 0; }
  .lxi-panel--preview .lxi-panel__title,
  .lxi-panel--preview .lxi-panel__note,
  .lxi-panel--preview .lxi-actions { display: none !important; }
  .lxi-stage { border: 0; padding: 0; background: #fff; overflow: visible; }
  .lxi-fit { transform: none !important; width: auto !important; height: auto !important; }
  .lxi-sheet { box-shadow: none; width: auto; min-height: 0; padding: 0; }
}

@page { size: A4; margin: 14mm; }