/* Layout: a working app, not a landing page — slim top bar, page header with one primary action,
   dense hairline tables; the issued invoice is printed paper and stays white in both themes.
   Palette per the plan's §9.2: ink text, one pine green for actions, gold only for amounts due. */
:root {
  --canvas: #f4f5f3;
  --panel: #ffffff;
  --ink: #17201c;
  --ink-2: #4a5751;
  --ink-3: #78847e;
  --rule: #e2e6e3;
  --rule-strong: #c9d0cc;
  --brand: #0d5c3f;
  --brand-hover: #0a4b33;
  --brand-ink: #ffffff;
  --brand-tint: #eaf3ee;
  --amount: #7a5200;
  --alert: #b42318;
  --alert-tint: #fdf0ef;
  --hover: #f2f5f3;

  --paper: #ffffff;
  --paper-ink: #15201b;
  --paper-2: #56635c;
  --paper-3: #8a958f;
  --paper-rule: #e3e8e5;
  --paper-band: #f5f7f6;
  --paper-amount: #6f4a00;
  --paper-mark: rgba(13, 92, 63, 0.05);

  --font: "IBM Plex Sans Arabic", "Segoe UI", Tahoma, "Geeza Pro", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --t-xs: 0.75rem;
  --t-sm: 0.8125rem;
  --t-md: 0.9375rem;
  --t-lg: 1.0625rem;
  --t-xl: 1.375rem;
  --t-2xl: 1.75rem;
  --r: 6px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: #0f1513;
    --panel: #161e1b;
    --ink: #e5ebe8;
    --ink-2: #aab6b0;
    --ink-3: #7f8b85;
    --rule: #26302c;
    --rule-strong: #35413c;
    --brand: #45c08d;
    --brand-hover: #5dcf9f;
    --brand-ink: #07160f;
    --brand-tint: #17302a;
    --amount: #e2b65c;
    --alert: #f97066;
    --alert-tint: #3a1815;
    --hover: #1c2622;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --canvas: #0f1513;
  --panel: #161e1b;
  --ink: #e5ebe8;
  --ink-2: #aab6b0;
  --ink-3: #7f8b85;
  --rule: #26302c;
  --rule-strong: #35413c;
  --brand: #45c08d;
  --brand-hover: #5dcf9f;
  --brand-ink: #07160f;
  --brand-tint: #17302a;
  --amount: #e2b65c;
  --alert: #f97066;
  --alert-tint: #3a1815;
  --hover: #1c2622;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { direction: rtl; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--t-md);
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 0 24px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, p, dl, dd { margin: 0; }
h1 { font-size: var(--t-2xl); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; text-wrap: balance; }
h2 { font-size: var(--t-lg); font-weight: 600; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.ltr { direction: ltr; unicode-bidi: isolate; }
.muted { color: var(--ink-3); }
.cur { font-size: 0.72em; font-weight: 500; color: var(--ink-3); margin-inline-start: 2px; }

.shell { max-width: 1180px; margin: 0 auto; }

/* ---------- top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 14px;
  border-bottom: 1px solid var(--rule);
}
.brand { display: flex; align-items: center; gap: 10px; background: none; border: 0; padding: 0; }
.seal {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--brand);
  box-shadow: inset 0 0 0 2px var(--canvas), inset 0 0 0 3px var(--brand);
  color: var(--brand);
  font-size: 0.68rem;
  font-weight: 700;
  transform: rotate(-10deg);
}
.brand-name { font-size: var(--t-xl); font-weight: 700; letter-spacing: -0.02em; }
.org { display: grid; justify-items: end; text-align: end; min-width: 0; }
.org-name { font-weight: 600; font-size: var(--t-sm); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.org-vat { color: var(--ink-3); font-size: var(--t-xs); }
.demo-note { padding-block: 10px 0; color: var(--ink-3); font-size: var(--t-xs); }

.page { padding-block: 22px 8px; }
.page-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 14px 24px; margin-bottom: 20px; }
.page-head .sub { color: var(--ink-3); font-size: var(--t-sm); margin-top: 2px; }
.back {
  background: none;
  border: 0;
  padding: 0;
  margin-bottom: 4px;
  color: var(--ink-3);
  font-size: var(--t-sm);
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
.back::before { content: "→"; }
.back:hover { color: var(--ink); }
.doc-no { font-weight: 500; color: var(--ink-2); }

/* ---------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 16px;
  border-radius: var(--r);
  border: 1px solid var(--rule-strong);
  background: var(--panel);
  font-weight: 500;
  font-size: var(--t-sm);
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}
.btn:hover { background: var(--hover); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); font-weight: 600; height: 40px; padding: 0 20px; font-size: var(--t-md); }
.btn.primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); }
.btn.wide { width: 100%; }
.text-btn { background: none; border: 0; padding: 0; color: var(--brand); font-weight: 500; font-size: inherit; }
.text-btn:hover { text-decoration: underline; text-underline-offset: 3px; }
.text-btn.danger { color: var(--alert); }

/* ---------- list */
.figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--rule);
  margin-bottom: 18px;
}
.figures > div { padding: 14px 18px; border-inline-start: 1px solid var(--rule); min-width: 0; }
.figures > div:first-child { border-inline-start: 0; padding-inline-start: 0; }
.figures dt { font-size: var(--t-xs); color: var(--ink-3); }
.figures dd { font-size: var(--t-xl); font-weight: 600; letter-spacing: -0.01em; }
@media (max-width: 640px) {
  .figures { grid-template-columns: 1fr 1fr; }
  .figures > div:nth-child(3) { grid-column: 1 / -1; border-inline-start: 0; border-top: 1px solid var(--rule); padding-inline-start: 0; }
}

.filters { display: flex; gap: 2px 18px; overflow-x: auto; overflow-y: hidden; border-bottom: 1px solid var(--rule); margin-bottom: 4px; scrollbar-width: thin; }
.filters button {
  background: none;
  border: 0;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  color: var(--ink-2);
  font-size: var(--t-sm);
  white-space: nowrap;
}
.filters button.on { color: var(--ink); font-weight: 600; border-bottom-color: var(--ink); }
.filters .count { color: var(--ink-3); font-weight: 400; margin-inline-start: 4px; }

.rows { display: grid; background: var(--panel); border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; }
.row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1.7fr) minmax(0, 1fr) 96px 120px 84px;
  gap: 12px;
  align-items: center;
  padding: 11px 16px;
  border: 0;
  border-top: 1px solid var(--rule);
  background: none;
  text-align: start;
  width: 100%;
  font-size: var(--t-sm);
}
.row.head { border-top: 0; color: var(--ink-3); font-size: var(--t-xs); padding-block: 9px; cursor: default; }
button.row:hover { background: var(--hover); }
.row .who { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .kind, .row .date { color: var(--ink-2); }
.row .amount { font-weight: 500; }
/* Amounts read left-to-right so a credit note's minus sign stays in front of the number. */
.num { direction: ltr; unicode-bidi: isolate; display: inline-block; }
.row .amount, .i-total { direction: ltr; text-align: left; }
.row .amount.minus { color: var(--ink-2); }
.state { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); }
.state i { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.empty { padding: 28px 16px; color: var(--ink-3); text-align: center; }
@media (max-width: 720px) {
  .row.head { display: none; }
  .row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "who amount" "meta meta";
    row-gap: 2px;
  }
  .row .who { grid-area: who; }
  .row .amount { grid-area: amount; }
  .row .doc-no, .row .kind, .row .date, .row .state { grid-row: 2; font-size: var(--t-xs); color: var(--ink-3); }
  .row .doc-no { grid-column: 1 / -1; }
  .row .kind, .row .date, .row .state { display: none; }
}

/* ---------- editor */
.editor-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 20px; align-items: start; }
@media (max-width: 920px) { .editor-grid { grid-template-columns: minmax(0, 1fr); } }
.editor-main { background: var(--panel); border: 1px solid var(--rule); border-radius: var(--r); }
.block { padding: 20px 22px; display: grid; gap: 14px; }
.block + .block { border-top: 1px solid var(--rule); }
@media (max-width: 480px) { .block { padding: 16px 14px; } }

.audience { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 520px) { .audience { grid-template-columns: minmax(0, 1fr); } }
.audience label {
  position: relative;
  display: grid;
  gap: 2px;
  padding: 12px 14px;
  padding-inline-start: 40px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r);
  cursor: pointer;
}
.audience input { position: absolute; inset-inline-start: 14px; top: 15px; margin: 0; width: 16px; height: 16px; accent-color: var(--brand); }
.audience span { color: var(--ink-3); font-size: var(--t-xs); }
.audience label.on { border-color: var(--brand); background: var(--brand-tint); }

.field { display: grid; gap: 5px; min-width: 0; }
.field > span { font-size: var(--t-xs); color: var(--ink-2); font-weight: 500; }
.field.narrow { max-width: 360px; }
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.fields .span-2 { grid-column: 1 / -1; }
@media (max-width: 480px) { .fields { grid-template-columns: minmax(0, 1fr); } }
.customer-pick { display: grid; gap: 12px; max-width: 560px; }
.customer-card { color: var(--ink-2); font-size: var(--t-sm); line-height: 1.7; }
.fixed-customer { font-weight: 600; }
.fixed-customer .muted { font-weight: 400; font-size: var(--t-sm); }

input, select {
  width: 100%;
  min-width: 0;
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r);
  background: var(--panel);
  font-size: var(--t-sm);
}
input::placeholder { color: var(--ink-3); }
input:disabled { background: var(--canvas); color: var(--ink-3); }
input:focus, select:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px var(--brand-tint); }
input.ltr { text-align: left; }

.reasons { display: flex; flex-wrap: wrap; gap: 8px; }
.reasons button { border: 1px solid var(--rule-strong); background: var(--panel); border-radius: var(--r); padding: 5px 12px; font-size: var(--t-sm); }
.reasons button.on { border-color: var(--brand); background: var(--brand-tint); color: var(--ink); }

.items-edit { display: grid; gap: 8px; }
.item-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px 96px 76px 132px 96px 30px;
  gap: 8px;
  align-items: center;
}
.item-row.head { font-size: var(--t-xs); color: var(--ink-3); }
.item-row .end, .i-total { text-align: end; }
.i-total { font-size: var(--t-sm); font-weight: 500; }
.i-remove { width: 30px; height: 30px; border: 0; border-radius: var(--r); background: none; color: var(--ink-3); display: grid; place-items: center; }
.i-remove:hover:not(:disabled) { color: var(--alert); background: var(--alert-tint); }
.i-remove:disabled { opacity: 0.25; cursor: default; }
@media (max-width: 760px) {
  .item-row.head { display: none; }
  .item-row {
    grid-template-columns: repeat(3, minmax(0, 1fr)) 30px;
    grid-template-areas: "name name name remove" "qty price disc disc" "tax tax total total";
    padding-bottom: 12px;
    border-bottom: 1px solid var(--rule);
  }
  .i-name { grid-area: name; }
  .i-qty { grid-area: qty; }
  .i-price { grid-area: price; }
  .i-disc { grid-area: disc; }
  .i-tax { grid-area: tax; }
  .i-total { grid-area: total; }
  .i-remove { grid-area: remove; }
}
.add { justify-self: start; background: none; border: 0; padding: 4px 0; color: var(--brand); font-weight: 600; font-size: var(--t-sm); }
.add::before { content: "+"; margin-inline-end: 6px; font-weight: 400; }

.editor-side { position: sticky; top: 16px; }
.side-card { background: var(--panel); border: 1px solid var(--rule); border-radius: var(--r); padding: 18px; display: grid; gap: 14px; }
.side-card > .text-btn { justify-self: start; font-size: var(--t-sm); }
.kv div { display: flex; justify-content: space-between; gap: 12px; font-size: var(--t-sm); }
.kv dt { color: var(--ink-3); }
.kv dd { text-align: end; display: grid; }
.kv small { color: var(--ink-3); font-size: var(--t-xs); }
.sums { display: grid; gap: 6px; padding-top: 12px; border-top: 1px solid var(--rule); }
.sums div { display: flex; justify-content: space-between; gap: 12px; font-size: var(--t-sm); }
.sums dt { color: var(--ink-2); }
.sums .total { margin-top: 4px; padding-top: 10px; border-top: 1px solid var(--rule); align-items: baseline; }
.sums .total dt { color: var(--ink); font-weight: 600; font-size: var(--t-md); }
.sums .total dd { font-size: var(--t-xl); font-weight: 700; color: var(--amount); }
.problems { margin: 0; padding: 10px 12px; padding-inline-start: 28px; background: var(--alert-tint); color: var(--alert); border-radius: var(--r); font-size: var(--t-sm); display: grid; gap: 3px; }
.fine { color: var(--ink-3); font-size: var(--t-xs); }

/* ---------- invoice page */
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.related { color: var(--ink-2); font-size: var(--t-sm); margin: -8px 0 16px; display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: baseline; }

.document {
  position: relative;
  overflow: hidden;
  max-width: 880px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--paper-rule);
  border-radius: 2px;
  padding: 44px 48px 32px;
  display: grid;
  gap: 26px;
  box-shadow: 0 1px 1px rgba(21, 32, 27, 0.04), 0 18px 40px -28px rgba(21, 32, 27, 0.45);
  font-size: var(--t-sm);
}
@media (max-width: 640px) { .document { padding: 22px 18px; gap: 20px; } }
/* On a phone screen the per-line VAT column gives way; the totals still carry the VAT, and print keeps it. */
@media screen and (max-width: 560px) {
  .doc-table .col-vat { display: none; }
  .doc-table th i, .doc-totals dt i { display: none; }
}
.document i { font-style: normal; color: var(--paper-3); font-size: 0.6875rem; margin-inline-start: 4px; letter-spacing: 0.01em; }
.document .faint { color: var(--paper-3); }
.watermark {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 700;
  color: var(--paper-mark);
  transform: rotate(-16deg);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}
.doc-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 16px 32px; }
.doc-seller { display: grid; gap: 2px; color: var(--paper-2); max-width: 48ch; }
.doc-seller-name { color: var(--paper-ink); font-size: var(--t-lg); font-weight: 700; margin-bottom: 4px; }
.doc-title { text-align: end; }
.doc-title-ar { font-size: var(--t-xl); font-weight: 700; }
.doc-title-en { color: var(--paper-3); font-size: var(--t-xs); letter-spacing: 0.12em; text-transform: uppercase; direction: ltr; }
.doc-meta { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 20px; padding-block: 14px; border-block: 1px solid var(--paper-rule); }
@media (max-width: 640px) { .doc-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.doc-meta dt { color: var(--paper-2); font-size: var(--t-xs); }
.doc-meta dd { font-weight: 600; display: grid; }
.doc-meta dd small { color: var(--paper-3); font-weight: 400; font-size: var(--t-xs); }
.doc-parties { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 32px; }
@media (max-width: 640px) { .doc-parties { grid-template-columns: minmax(0, 1fr); } }
.doc-parties > div { display: grid; gap: 1px; color: var(--paper-2); }
.doc-parties .label { color: var(--paper-2); font-size: var(--t-xs); margin-bottom: 4px; }
.doc-parties .strong { color: var(--paper-ink); font-weight: 600; font-size: var(--t-md); }

.doc-table { overflow-x: auto; }
.doc-table table { width: 100%; border-collapse: collapse; }
.doc-table th {
  text-align: end;
  font-weight: 600;
  font-size: var(--t-xs);
  color: var(--paper-2);
  padding: 8px 10px;
  border-bottom: 1.5px solid var(--paper-ink);
  white-space: nowrap;
}
.doc-table th i { display: block; margin: 0; }
.doc-table td { padding: 10px; border-bottom: 1px solid var(--paper-rule); vertical-align: top; }
.doc-table .desc { text-align: start; width: 40%; }
.doc-table th.desc { text-align: start; }
.doc-table td.n { text-align: end; white-space: nowrap; direction: ltr; }
.doc-table td.n .faint { font-size: var(--t-xs); margin-inline-end: 4px; }
.doc-table th:first-child, .doc-table td:first-child { padding-inline-start: 0; }
.doc-table th:last-child, .doc-table td:last-child { padding-inline-end: 0; }

.doc-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 20px 32px; }
.doc-qr { width: 112px; }
.qr { width: 112px; height: 112px; }
.qr svg { display: block; width: 100%; height: 100%; }
.doc-totals { display: grid; gap: 6px; min-width: min(340px, 100%); }
.doc-totals div { display: flex; justify-content: space-between; gap: 20px; }
.doc-totals dt { color: var(--paper-2); }
.doc-totals dd { direction: ltr; }
.doc-totals .grand { margin-top: 6px; padding: 10px 12px; background: var(--paper-band); align-items: baseline; }
.doc-totals .grand dt { color: var(--paper-ink); font-weight: 700; }
.doc-totals .grand dd { color: var(--paper-amount); font-size: var(--t-xl); font-weight: 700; white-space: nowrap; }
.doc-totals .cur { color: var(--paper-3); }
.doc-note { color: var(--paper-3); font-size: var(--t-xs); padding-top: 14px; border-top: 1px solid var(--paper-rule); }

.accountant { max-width: 880px; margin-top: 16px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--panel); }
.accountant summary {
  cursor: pointer;
  list-style: none;
  padding: 12px 16px;
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 10px;
}
.accountant summary::-webkit-details-marker { display: none; }
.accountant summary::before { content: ""; width: 7px; height: 7px; border-inline-start: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(-45deg); transition: transform 0.15s; }
.accountant[open] summary::before { transform: rotate(-135deg); }
.accountant-body { padding: 4px 16px 16px; display: grid; gap: 14px; font-size: var(--t-sm); color: var(--ink-2); }
.accountant-body > p { max-width: 70ch; }
.accountant-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tech { display: grid; gap: 10px; }
.tech div { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 12px; }
@media (max-width: 560px) { .tech div { grid-template-columns: minmax(0, 1fr); gap: 2px; } }
.tech dt { color: var(--ink-3); font-size: var(--t-xs); padding-top: 2px; }
.tech dd { font-family: var(--mono); font-size: var(--t-xs); overflow-wrap: anywhere; text-align: left; display: grid; gap: 2px; }
.tech-note { font-family: var(--font); color: var(--brand); text-align: right; }

/* ---------- when something breaks */
.crash { max-width: 640px; display: grid; gap: 12px; padding: 24px; background: var(--panel); border: 1px solid var(--rule); border-radius: var(--r); }
.crash pre { margin: 0; padding: 10px 12px; background: var(--canvas); border-radius: var(--r); font-family: var(--mono); font-size: var(--t-xs); white-space: pre-wrap; overflow-wrap: anywhere; direction: ltr; text-align: left; max-height: 220px; overflow: auto; }
.crash .actions { margin-top: 4px; }

/* ---------- footer */
.footer {
  margin-top: 32px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px 24px;
  color: var(--ink-3);
  font-size: var(--t-xs);
}
.inline-confirm { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; }
.about { display: grid; gap: 4px; max-width: 72ch; }
.about b { color: var(--ink-2); font-weight: 600; }
.about a { color: var(--brand); text-underline-offset: 3px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ---------- print: the invoice alone, on A4 */
@page { size: A4; margin: 14mm; }
@media print {
  body { background: #fff; padding: 0; }
  .topbar, .demo-note, .footer, .page-head, .related, .accountant { display: none !important; }
  .page { padding: 0; }
  .document { max-width: none; border: 0; box-shadow: none; padding: 0; }
}