/* ==========================================================================
   Invoice generator – main stylesheet
   Tokens → base → layout → header → tool → content → footer → utilities
   ========================================================================== */

@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-latin-ext.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --desk: #e6ecea;
  --desk-2: #dbe3e0;
  --paper: #ffffff;
  --ink: #16323a;
  --ink-2: #4c636a;
  --ink-3: #5c7075;
  --rule: #cbd7d3;
  --rule-2: #e3eae8;
  --green: #0e7a5b;
  --green-hover: #0b664c;
  --green-ink: #ffffff;
  --green-soft: #dcefe7;
  --carbon-1: #d2e2dc;
  --carbon-2: #c3d4cf;
  --error: #b3361f;
  --error-soft: #fbe9e5;
  --shadow: 0 1px 2px rgba(22, 50, 58, .06), 0 8px 24px -12px rgba(22, 50, 58, .18);

  --font: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif;
  --step--1: .8125rem;
  --step-0: 1rem;
  --step-1: 1.1875rem;
  --step-2: 1.5rem;
  --step-3: 2rem;
  --step-4: clamp(2rem, 1.4rem + 2.4vw, 2.875rem);

  --radius-s: 6px;
  --radius-m: 10px;
  --wrap: 1180px;
  --measure: 68ch;
  --header-h: 64px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --desk: #0f181a;
  --desk-2: #142023;
  --paper: #172427;
  --ink: #e3ece9;
  --ink-2: #a3b6b2;
  --ink-3: #8fa3a3;
  --rule: #2b3e41;
  --rule-2: #213235;
  --green: #3fc497;
  --green-hover: #5cd3aa;
  --green-ink: #07211a;
  --green-soft: #183a31;
  --carbon-1: #1d3134;
  --carbon-2: #233a3d;
  --error: #ff8a72;
  --error-soft: #3a1f1a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -14px rgba(0, 0, 0, .6);
  color-scheme: dark;
}

/* Scripts that Instrument Sans doesn't cover get their best system fonts. */
:lang(ar), :lang(ur) { --font: "Segoe UI", "Noto Sans Arabic", "Noto Naskh Arabic", Tahoma, system-ui, sans-serif; }
:lang(ur) { --font: "Noto Nastaliq Urdu", "Jameel Noori Nastaleeq", "Segoe UI", "Noto Sans Arabic", Tahoma, sans-serif; }
:lang(hi) { --font: "Instrument Sans", "Nirmala UI", "Noto Sans Devanagari", "Mangal", system-ui, sans-serif; }
:lang(bn) { --font: "Instrument Sans", "Nirmala UI", "Noto Sans Bengali", "Vrinda", system-ui, sans-serif; }
:lang(th) { --font: "Instrument Sans", "Leelawadee UI", "Noto Sans Thai", "Thonburi", system-ui, sans-serif; }
:lang(zh) { --font: "Instrument Sans", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif; }
:lang(ja) { --font: "Instrument Sans", "Hiragino Sans", "Yu Gothic UI", "Meiryo", "Noto Sans JP", sans-serif; }
:lang(ko) { --font: "Instrument Sans", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif; }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background: var(--desk);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--green); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--green-hover); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 600; letter-spacing: -.012em; text-wrap: balance; }
p { margin: 0 0 1em; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; border-radius: 3px; }
::selection { background: var(--green-soft); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; inset-inline-start: 12px; top: -48px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: var(--radius-s); z-index: 100; }
.skip-link:focus { top: 12px; color: var(--paper); }
.wrap { width: min(100% - 32px, var(--wrap)); margin-inline: auto; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  min-height: 42px; padding: 0 18px;
  border-radius: var(--radius-s); border: 1px solid var(--rule);
  background: var(--paper); color: var(--ink);
  font-weight: 600; font-size: .9375rem; line-height: 1; text-decoration: none;
  cursor: pointer; transition: background-color .15s, border-color .15s, color .15s;
}
.btn:hover { border-color: var(--ink-3); color: var(--ink); }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--green); border-color: var(--green); color: var(--green-ink); }
.btn-primary:hover { background: var(--green-hover); border-color: var(--green-hover); color: var(--green-ink); }
.btn-quiet { background: transparent; border-color: transparent; color: var(--ink-2); padding-inline: 10px; }
.btn-quiet:hover { background: var(--desk-2); color: var(--ink); border-color: transparent; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--desk) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.header-inner { display: flex; align-items: center; gap: 12px; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.125rem; letter-spacing: -.02em; margin-inline-end: auto; }
.brand:hover { color: var(--ink); }
.brand-mark { width: 30px; height: 30px; flex: none; }
.main-nav { display: flex; align-items: center; gap: 2px; }
.main-nav a { color: var(--ink-2); text-decoration: none; padding: 8px 12px; border-radius: var(--radius-s); font-weight: 500; font-size: .9375rem; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--ink); background: var(--desk-2); }
.main-nav a.nav-ai { color: var(--green); border: 1px solid color-mix(in srgb, var(--green) 45%, transparent); margin-inline-start: 6px; display: inline-flex; gap: 6px; align-items: center; }
.main-nav a.nav-ai:hover, .main-nav a.nav-ai[aria-current="page"] { background: var(--green-soft); color: var(--green); }
.nav-ai svg { width: 16px; height: 16px; }
.header-tools { display: flex; align-items: center; gap: 4px; margin-inline-start: 8px; }
.icon-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-s); background: transparent; border: 1px solid transparent; color: var(--ink-2); cursor: pointer; }
.icon-btn:hover { background: var(--desk-2); color: var(--ink); }
.icon-btn svg { width: 20px; height: 20px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* Language menu (works without JavaScript) */
.lang-menu { position: relative; }
.lang-menu > summary { list-style: none; display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 10px; border-radius: var(--radius-s); cursor: pointer; color: var(--ink-2); font-weight: 500; font-size: .9375rem; }
.lang-menu > summary::-webkit-details-marker { display: none; }
.lang-menu > summary:hover, .lang-menu[open] > summary { background: var(--desk-2); color: var(--ink); }
.lang-menu > summary svg { width: 20px; height: 20px; }
.lang-list { position: absolute; inset-inline-end: 0; top: calc(100% + 6px); width: min(440px, calc(100vw - 24px)); max-height: min(70vh, 520px); overflow: auto; margin: 0; padding: 8px; list-style: none; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); box-shadow: var(--shadow); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2px; z-index: 50; }
.lang-list a { display: block; padding: 8px 10px; border-radius: var(--radius-s); color: var(--ink); text-decoration: none; font-size: .9375rem; }
.lang-list a:hover { background: var(--desk); }
.lang-list a[aria-current="true"] { background: var(--green-soft); color: var(--green); font-weight: 600; }
.menu-toggle { display: none; }

@media (max-width: 900px) {
  .menu-toggle { display: inline-grid; }
  .main-nav { position: absolute; top: var(--header-h); inset-inline: 0; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 16px; background: var(--desk); border-bottom: 1px solid var(--rule); display: none; }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 12px; font-size: 1rem; }
  .main-nav a.nav-ai { margin: 8px 0 0; justify-content: center; }
  .lang-label { display: none; }
  .header-inner { position: relative; }
  .lang-menu { position: static; }
  .lang-list { position: absolute; top: calc(100% + 6px); left: 0; right: 0; inset-inline: 0; width: auto; max-width: none; max-height: calc(100dvh - var(--header-h) - 24px); }
}
@media (max-width: 900px) {
  .lang-list { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2px; padding: 6px; overflow-y: auto; }
  .lang-list a { padding: 8px 10px; min-height: 40px; display: flex; align-items: center; font-size: .95rem; }
}

/* ---------- Language suggestion bar ---------- */
.lang-suggest { background: var(--ink); color: var(--paper); font-size: .9375rem; }
.lang-suggest .wrap { display: flex; align-items: center; gap: 12px; padding-block: 10px; flex-wrap: wrap; }
.lang-suggest a { color: var(--paper); font-weight: 600; }
.lang-suggest button { margin-inline-start: auto; background: transparent; border: 0; color: inherit; cursor: pointer; opacity: .8; font-size: 1.25rem; line-height: 1; padding: 4px 8px; }

/* ---------- Ad slots (collapse until filled) ---------- */
.ad-slot { display: none; }
.ads-on .ad-slot { display: block; margin-block: 24px; text-align: center; }
.ads-on .ad-slot:empty { display: none; }
.ads-on .ad-slot.is-unfilled,
.ads-on .ad-slot:has(ins[data-ad-status="unfilled"]) { display: none; }
.ad-slot ins { display: block; }

/* ---------- Hero ---------- */
.hero { padding-block: 40px 20px; }
.hero h1 { font-size: var(--step-4); letter-spacing: -.028em; margin-bottom: .3em; max-width: 20ch; }
.hero .lead { font-size: var(--step-1); color: var(--ink-2); max-width: 60ch; margin: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 14px; font-size: .9375rem; color: var(--ink-2); }
.hero-actions a { font-weight: 600; }

/* ---------- Tool ---------- */
.tool { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; align-items: start; padding-block: 12px 48px; }
.sheet-stack { position: relative; padding: 0 12px 14px 0; }
.sheet-stack::before, .sheet-stack::after { content: ""; position: absolute; border-radius: 4px; z-index: 0; }
.sheet-stack::before { inset: 14px 0 0 12px; background: var(--carbon-2); }
.sheet-stack::after { inset: 7px 6px 7px 6px; background: var(--carbon-1); }
[dir="rtl"] .sheet-stack { padding: 0 0 14px 12px; }
[dir="rtl"] .sheet-stack::before { inset: 14px 12px 0 0; }

.sheet {
  position: relative; z-index: 1;
  background: var(--paper);
  border-radius: 4px;
  box-shadow: var(--shadow);
  padding: clamp(18px, 4vw, 48px);
  border-top: 5px solid var(--sheet-accent, var(--green));
}
.f-input, .f-area, .f-label {
  width: 100%; border: 1px solid transparent; background: transparent; border-radius: var(--radius-s);
  padding: 7px 9px; color: var(--ink); line-height: 1.45;
  transition: border-color .15s, background-color .15s;
}
.f-input, .f-area { border-color: var(--rule-2); }
.f-input:hover, .f-area:hover, .f-label:hover { border-color: var(--rule); }
.f-input:focus, .f-area:focus, .f-label:focus { outline: none; border-color: var(--green); background: color-mix(in srgb, var(--green-soft) 35%, transparent); }
.f-area { resize: vertical; min-height: 84px; display: block; }
.f-label { color: var(--ink-2); font-size: .875rem; font-weight: 500; padding-block: 4px; }
.f-input::placeholder, .f-area::placeholder { color: var(--ink-3); opacity: 1; }
.is-invalid { border-color: var(--error) !important; background: var(--error-soft) !important; }
.field-error { color: var(--error); font-size: .8125rem; margin: 4px 2px 0; }

.sheet-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 28px; }
.logo-drop { position: relative; display: grid; place-items: center; width: 180px; height: 96px; border: 1.5px dashed var(--rule); border-radius: var(--radius-m); color: var(--ink-3); font-size: .875rem; text-align: center; cursor: pointer; padding: 8px; background: var(--desk); transition: border-color .15s; }
.logo-drop:hover, .logo-drop.is-drag { border-color: var(--green); color: var(--green); }
.logo-drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.logo-drop img { position: absolute; inset: 8px; width: calc(100% - 16px); height: calc(100% - 16px); max-width: none; object-fit: contain; object-position: center; }
.logo-drop.has-logo { border-style: solid; border-color: transparent; background: transparent; }
.logo-remove { position: absolute; top: -10px; inset-inline-end: -10px; width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--rule); background: var(--paper); color: var(--ink-2); cursor: pointer; display: none; place-items: center; z-index: 2; font-size: 16px; line-height: 1; }
.logo-drop.has-logo + .logo-remove, .logo-wrap:hover .logo-remove { display: grid; }
.logo-wrap { position: relative; }
.logo-wrap:not(:has(.has-logo)) .logo-remove { display: none; }

.doc-title-box { text-align: end; flex: 1; max-width: 320px; }
.doc-title { font-size: clamp(1.6rem, 1.1rem + 2vw, 2.4rem); font-weight: 700; letter-spacing: -.02em; text-align: end; color: var(--ink); padding: 2px 8px; }
.doc-number { display: flex; align-items: center; gap: 4px; margin-top: 6px; justify-content: flex-end; }
.doc-number .f-label { width: auto; max-width: 70px; text-align: end; }
.doc-number .f-input { max-width: 170px; text-align: end; }

.sheet-parties { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 300px); gap: 28px; margin-bottom: 30px; }
.party-grid { display: grid; gap: 14px; }
.party-pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }
.meta-rows { display: grid; gap: 6px; align-content: start; }
.meta-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 6px; align-items: center; }
.meta-row .f-label { text-align: end; }
.balance-chip { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 6px; align-items: center; background: var(--green-soft); border-radius: var(--radius-s); padding: 8px 9px 8px 0; margin-top: 6px; }
.balance-chip .f-label { text-align: end; color: var(--ink); font-weight: 600; }
.balance-chip output { font-weight: 700; font-size: 1.0625rem; padding-inline: 9px; text-align: end; }

/* line items */
.items { margin-bottom: 26px; }
.items-head, .item-row { display: grid; grid-template-columns: minmax(0, 1fr) 90px 120px 120px 34px; gap: 8px; align-items: start; }
.items-head { background: var(--ink); border-radius: var(--radius-s); padding: 4px; margin-bottom: 8px; }
.items-head .f-label { color: var(--paper); font-weight: 600; }
.items-head .f-label:focus { background: transparent; border-color: var(--green-soft); }
.items-head .f-label:hover { border-color: color-mix(in srgb, var(--paper) 30%, transparent); }
.items-head .al-end, .item-row .al-end { text-align: end; }
.item-row { padding: 6px 4px; border-bottom: 1px solid var(--rule-2); }
.item-row .f-area { min-height: 40px; resize: none; overflow: hidden; }
.item-row .amount { padding: 8px 9px; text-align: end; font-weight: 600; }
.item-remove { width: 34px; height: 36px; border: 0; background: transparent; color: var(--ink-3); cursor: pointer; border-radius: var(--radius-s); display: grid; place-items: center; }
.item-remove:hover { color: var(--error); background: var(--error-soft); }
.item-remove svg { width: 18px; height: 18px; }
.add-line { margin-top: 12px; color: var(--green); border-color: color-mix(in srgb, var(--green) 40%, transparent); }
.add-line:hover { color: var(--green); background: var(--green-soft); border-color: var(--green); }
.cell-caption { display: none; }

.sheet-foot { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 340px); gap: 28px; }
.notes-col { display: grid; gap: 14px; align-content: start; }
.totals { display: grid; gap: 4px; align-content: start; }
.total-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 6px; align-items: center; }
.total-row .f-label { text-align: end; }
.total-row output { text-align: end; padding: 7px 9px; font-weight: 600; }
.total-row.is-grand { border-top: 1px solid var(--rule); margin-top: 6px; padding-top: 8px; }
.total-row.is-grand output { font-size: 1.125rem; font-weight: 700; }
.adj-input { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px; }
.adj-input .f-input { text-align: end; }
.adj-type { min-height: 38px; border: 1px solid var(--rule-2); border-radius: var(--radius-s); background: var(--paper); padding: 0 4px; font-size: .8125rem; color: var(--ink-2); cursor: pointer; }
.adj-amount { grid-column: 2; text-align: end; font-size: .875rem; color: var(--ink-2); padding: 0 9px 2px; }
.adj-row.is-off .adj-amount { display: none; }
.adj-row.is-off .adj-input .f-input { display: none; }
.adj-row.is-off .adj-input { grid-template-columns: 1fr; justify-items: end; }
.adj-row.is-off .f-label { color: var(--ink-3); text-decoration: line-through; text-decoration-color: var(--rule); }

/* side panel */
.panel { position: sticky; top: calc(var(--header-h) + 16px); display: grid; gap: 16px; }
.panel-card { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); padding: 16px; display: grid; gap: 14px; }
.panel-total { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.panel-total span { color: var(--ink-2); font-size: .875rem; }
.panel-total strong { font-size: 1.375rem; letter-spacing: -.01em; }
.panel-field { display: grid; gap: 6px; }
.panel-field > label, .panel-field > span { font-size: .8125rem; font-weight: 600; color: var(--ink-2); }
.select, .panel-field select { width: 100%; height: 40px; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); padding: 0 10px; color: var(--ink); }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; border: 1px solid var(--rule); border-radius: var(--radius-s); overflow: hidden; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label { text-align: center; padding: 8px 6px; font-size: .875rem; cursor: pointer; color: var(--ink-2); }
.seg label + input + label, .seg input + label ~ label { border-inline-start: 1px solid var(--rule); }
.seg input:checked + label { background: var(--ink); color: var(--paper); font-weight: 600; }
.seg input:focus-visible + label { outline: 2px solid var(--green); outline-offset: -2px; }
.swatches { display: flex; gap: 8px; flex-wrap: wrap; }
.swatch { width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--paper); box-shadow: 0 0 0 1px var(--rule); cursor: pointer; padding: 0; }
.swatch[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--ink); }
.panel-links { display: grid; gap: 2px; }
.panel-links .btn { justify-content: flex-start; }
.panel-note { font-size: .8125rem; color: var(--ink-3); margin: 0; line-height: 1.5; }

/* currency picker */
.cur-picker { position: relative; }
.cur-button { width: 100%; height: 40px; display: flex; align-items: center; justify-content: space-between; gap: 8px; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); padding: 0 10px; cursor: pointer; text-align: start; }
.cur-button .code { font-weight: 700; }
.cur-button .name { color: var(--ink-2); font-size: .875rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.cur-pop { position: absolute; inset-inline: 0; top: calc(100% + 6px); background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); box-shadow: var(--shadow); z-index: 30; padding: 8px; display: none; min-width: 280px; }
.cur-pop.is-open { display: block; }
.cur-search { width: 100%; height: 40px; border: 1px solid var(--rule); border-radius: var(--radius-s); padding: 0 10px; background: var(--desk); }
.cur-list { list-style: none; margin: 8px 0 0; padding: 0; max-height: 300px; overflow: auto; }
.cur-group { font-size: .75rem; color: var(--ink-3); padding: 8px 8px 4px; font-weight: 600; }
.cur-opt { display: flex; gap: 10px; align-items: baseline; padding: 8px; border-radius: var(--radius-s); cursor: pointer; }
.cur-opt .code { font-weight: 700; width: 42px; flex: none; }
.cur-opt .sym { color: var(--ink-3); margin-inline-start: auto; flex: none; }
.cur-opt[aria-selected="true"], .cur-opt:hover { background: var(--desk); }
.cur-opt.is-current .code { color: var(--green); }
.cur-empty { padding: 12px 8px; color: var(--ink-3); font-size: .875rem; }

/* mobile action bar */
.mobile-bar { display: none; }

@media (max-width: 1040px) {
  .tool { grid-template-columns: minmax(0, 1fr); }
  .panel { position: static; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
}
@media (max-width: 720px) {
  .hero { padding-block: 24px 8px; }
  .sheet-stack { padding: 0 6px 8px 0; }
  .sheet-stack::before { inset: 8px 0 0 6px; }
  .sheet-stack::after { inset: 4px 3px 4px 3px; }
  .sheet-head { flex-direction: column-reverse; gap: 16px; }
  .doc-title-box { max-width: none; width: 100%; text-align: start; }
  .doc-title { text-align: start; }
  .doc-number { justify-content: flex-start; }
  .doc-number .f-label { text-align: start; }
  .doc-number .f-input { text-align: start; max-width: none; }
  .logo-drop { width: 150px; height: 80px; }
  .sheet-parties, .sheet-foot { grid-template-columns: minmax(0, 1fr); }
  .party-pair { grid-template-columns: minmax(0, 1fr); }
  .meta-row, .balance-chip, .total-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); }
  .items-head { display: none; }
  .item-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 34px; grid-template-areas: "desc desc rm" "qty rate rate" "amt amt amt"; gap: 6px; padding: 10px 0; }
  .item-row .c-desc { grid-area: desc; }
  .item-row .c-qty { grid-area: qty; }
  .item-row .c-rate { grid-area: rate; }
  .item-row .c-amt { grid-area: amt; }
  .item-row .item-remove { grid-area: rm; }
  .item-row .amount { text-align: end; }
  .cell-caption { display: block; font-size: .75rem; color: var(--ink-3); padding-inline: 2px; }
  .mobile-bar { display: flex; position: fixed; inset-inline: 0; bottom: 0; z-index: 35; gap: 12px; align-items: center; justify-content: space-between; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: var(--paper); border-top: 1px solid var(--rule); box-shadow: 0 -8px 24px -16px rgba(0,0,0,.35); }
  .mobile-bar .mb-total { display: grid; line-height: 1.2; }
  .mobile-bar .mb-total span { font-size: .75rem; color: var(--ink-2); }
  .mobile-bar .mb-total strong { font-size: 1.125rem; }
  .has-mobile-bar .site-footer { padding-bottom: 96px; }
}

/* ---------- Content ---------- */
.section { padding-block: 48px; border-top: 1px solid var(--rule); }
.section h2 { font-size: var(--step-3); letter-spacing: -.022em; }
.section-intro { color: var(--ink-2); max-width: var(--measure); font-size: var(--step-1); }
.prose { max-width: var(--measure); min-width: 0; overflow-wrap: break-word; }
.prose h2 { font-size: var(--step-2); margin-top: 1.8em; }
.prose h3 { font-size: var(--step-1); margin-top: 1.6em; }
.prose ul, .prose ol { padding-inline-start: 1.3em; margin: 0 0 1.1em; }
.prose li { margin-bottom: .45em; }
.prose li::marker { color: var(--green); }
.prose table { width: 100%; border-collapse: collapse; margin: 0 0 1.3em; font-size: .9375rem; }
.prose th, .prose td { text-align: start; padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.prose th { font-weight: 600; background: var(--desk-2); }
.table-scroll { overflow-x: auto; margin-bottom: 1.3em; }
.table-scroll table { margin: 0; min-width: 520px; }
.callout { border-inline-start: 3px solid var(--green); background: var(--paper); padding: 14px 18px; border-radius: 0 var(--radius-s) var(--radius-s) 0; margin: 0 0 1.3em; }
[dir="rtl"] .callout { border-radius: var(--radius-s) 0 0 var(--radius-s); }
.callout p:last-child { margin: 0; }

.steps { list-style: none; counter-reset: step; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr)); gap: 28px; }
.steps li { counter-increment: step; position: relative; padding-top: 52px; }
.steps li::before { content: counter(step); position: absolute; top: 0; inset-inline-start: 0; width: 38px; height: 38px; border-radius: 50%; border: 1.5px solid var(--ink); display: grid; place-items: center; font-weight: 700; font-variant-numeric: tabular-nums; }
.steps li::after { content: ""; position: absolute; top: 19px; inset-inline-start: 50px; inset-inline-end: -14px; border-top: 1.5px dashed var(--rule); }
.steps li:last-child::after { display: none; }
.steps h3 { font-size: var(--step-1); margin-bottom: .35em; }
.steps p { color: var(--ink-2); margin: 0; }

.feature-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 0 48px; margin-top: 24px; }
.feature { padding: 20px 0; border-top: 1px solid var(--rule); }
.feature h3 { font-size: var(--step-1); margin-bottom: .3em; }
.feature p { color: var(--ink-2); margin: 0; }

.faq-list { max-width: 820px; margin-top: 20px; }
.faq-list details { border-bottom: 1px solid var(--rule); }
.faq-list summary { cursor: pointer; list-style: none; padding: 18px 40px 18px 0; position: relative; font-weight: 600; font-size: 1.0625rem; }
[dir="rtl"] .faq-list summary { padding: 18px 0 18px 40px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: ""; position: absolute; inset-inline-end: 8px; top: 50%; width: 10px; height: 10px; border-inline-end: 2px solid var(--ink-2); border-bottom: 2px solid var(--ink-2); transform: translateY(-70%) rotate(45deg); transition: transform .2s; }
.faq-list details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq-list .answer { padding: 0 0 18px; color: var(--ink-2); max-width: var(--measure); }
.faq-list .answer p:last-child { margin: 0; }

.content-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 8px; }

/* page header for inner pages */
.page-head { padding-block: 40px 28px; }
.page-head h1 { font-size: var(--step-4); letter-spacing: -.028em; max-width: 24ch; }
.page-head .lead { font-size: var(--step-1); color: var(--ink-2); max-width: 62ch; margin: 0; }
.breadcrumb { font-size: .875rem; color: var(--ink-3); margin-bottom: 14px; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0; }
.breadcrumb li + li::before { content: "/"; margin-inline-end: 6px; color: var(--rule); }
.breadcrumb a { color: var(--ink-2); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.page-body { padding-bottom: 64px; }
.updated { font-size: .875rem; color: var(--ink-3); }

/* guide layout */
.guide-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 56px; align-items: start; }
.guide-nav { position: sticky; top: calc(var(--header-h) + 24px); }
.guide-nav p { font-size: .875rem; font-weight: 600; color: var(--ink-2); margin-bottom: 8px; }
.guide-nav ol { list-style: none; padding: 0; margin: 0; counter-reset: g; border-inline-start: 1px solid var(--rule); }
.guide-nav li { counter-increment: g; }
.guide-nav a { display: flex; gap: 10px; padding: 8px 14px; color: var(--ink-2); text-decoration: none; font-size: .9375rem; margin-inline-start: -1px; border-inline-start: 2px solid transparent; }
.guide-nav a::before { content: counter(g); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.guide-nav a:hover { color: var(--ink); }
.guide-nav a[aria-current="page"] { color: var(--ink); font-weight: 600; border-inline-start-color: var(--green); }
.guide-pager { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; margin-top: 48px; max-width: var(--measure); }
.guide-pager a { display: grid; gap: 2px; padding: 16px; border: 1px solid var(--rule); border-radius: var(--radius-m); text-decoration: none; color: var(--ink); background: var(--paper); }
.guide-pager a:hover { border-color: var(--green); }
.guide-pager span { font-size: .8125rem; color: var(--ink-3); }
.guide-pager .next { text-align: end; grid-column: 2; }
.toc { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); padding: 16px 20px; margin-bottom: 28px; max-width: var(--measure); }
.toc p { font-weight: 600; margin-bottom: 6px; font-size: .9375rem; }
.toc ol { margin: 0; padding-inline-start: 1.2em; font-size: .9375rem; }
.toc li { margin-bottom: 3px; }
@media (max-width: 900px) {
  .guide-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .guide-nav { position: static; }
}

/* AI page */
.ai-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 420px); gap: 48px; align-items: start; }
.ai-box { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); padding: 22px; box-shadow: var(--shadow); display: grid; gap: 14px; }
.ai-box h2 { font-size: var(--step-1); margin: 0; }
.ai-buttons { display: grid; gap: 8px; }
.ai-buttons .btn { justify-content: flex-start; }
.ai-example { background: var(--desk); border-radius: var(--radius-s); padding: 12px 14px; font-size: .9375rem; color: var(--ink-2); margin: 0; }
@media (max-width: 900px) { .ai-layout { grid-template-columns: minmax(0, 1fr); } }

/* history */
.history-toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; align-items: center; }
.history-toolbar .spacer { flex: 1; }
.history-table { width: 100%; border-collapse: collapse; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); overflow: hidden; }
.history-table th, .history-table td { padding: 12px 14px; text-align: start; border-bottom: 1px solid var(--rule-2); font-size: .9375rem; }
.history-table th { font-size: .8125rem; color: var(--ink-2); font-weight: 600; background: var(--desk-2); }
.history-table td.al-end, .history-table th.al-end { text-align: end; }
.history-table .row-actions { display: flex; gap: 4px; justify-content: flex-end; }
.history-empty { background: var(--paper); border: 1.5px dashed var(--rule); border-radius: var(--radius-m); padding: 40px 24px; text-align: center; }
.history-empty p { color: var(--ink-2); }
@media (max-width: 720px) {
  .history-table thead { display: none; }
  .history-table tr { display: grid; grid-template-columns: minmax(0, 1fr) auto; padding: 10px 4px; border-bottom: 1px solid var(--rule-2); }
  .history-table td { border: 0; padding: 4px 10px; }
  .history-table td.c-actions { grid-column: 1 / -1; }
}

/* contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; max-width: 980px; }
.contact-card { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); padding: 22px; }
.form-field { display: grid; gap: 6px; margin-bottom: 14px; }
.form-field label { font-weight: 600; font-size: .9375rem; }
.form-field input, .form-field textarea, .form-field select { width: 100%; border: 1px solid var(--rule); border-radius: var(--radius-s); padding: 10px 12px; background: var(--paper); }
.form-field textarea { min-height: 140px; resize: vertical; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }

/* 404 */
.notfound { padding-block: 72px; max-width: 640px; }
.notfound .code { font-size: clamp(4rem, 3rem + 6vw, 7rem); font-weight: 700; letter-spacing: -.05em; line-height: 1; color: var(--carbon-2); margin-bottom: 8px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--rule); padding-block: 40px 32px; font-size: .9375rem; color: var(--ink-2); background: var(--desk-2); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 32px; }
.footer-grid h2 { font-size: .9375rem; color: var(--ink); margin-bottom: 10px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.footer-grid a { color: var(--ink-2); text-decoration: none; }
.footer-grid a:hover { color: var(--ink); text-decoration: underline; }
.footer-about p { max-width: 36ch; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--rule); font-size: .875rem; }
.linklike { background: none; border: 0; padding: 0; color: var(--ink-2); cursor: pointer; text-decoration: underline; text-underline-offset: .18em; }
.linklike:hover { color: var(--ink); }
@media (max-width: 800px) { .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .footer-about { grid-column: 1 / -1; } }

/* ---------- Toast ---------- */
.toast { position: fixed; inset-inline: 0; bottom: 24px; margin-inline: auto; width: max-content; max-width: calc(100% - 32px); background: var(--ink); color: var(--paper); padding: 12px 18px; border-radius: var(--radius-m); box-shadow: var(--shadow); z-index: 60; font-size: .9375rem; opacity: 0; transform: translateY(8px); transition: opacity .2s, transform .2s; pointer-events: none; }
.toast.is-on { opacity: 1; transform: none; }
@media (max-width: 720px) { .has-mobile-bar .toast { bottom: 88px; } }

/* ---------- Motion & print ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
@media print {
  .site-header, .site-footer, .panel, .ad-slot, .mobile-bar, .hero, .section, .lang-suggest { display: none !important; }
  body { background: #fff; }
  .sheet { box-shadow: none; }
  .sheet-stack::before, .sheet-stack::after { display: none; }
}

/* Amounts keep their own reading order inside right-to-left text. */
.num, output { unicode-bidi: plaintext; }

/* Right-to-left: the document title sits on the right, like the PDF. */
[dir="rtl"] .sheet-head { flex-direction: row-reverse; }
[dir="rtl"] .doc-title-box, [dir="rtl"] .doc-title { text-align: start; }
[dir="rtl"] .doc-number { justify-content: flex-start; }
[dir="rtl"] .doc-number .f-label, [dir="rtl"] .doc-number .f-input { text-align: start; }
@media (max-width: 720px) { [dir="rtl"] .sheet-head { flex-direction: column-reverse; } }
.paid-warn { grid-column: 1 / -1; text-align: end; margin: 0 9px 4px; }

/* Long words (German compounds, URLs, emails) must never push the page sideways on phones. */
body { overflow-wrap: break-word; }
h1, h2, h3, .lead, .prose, .page-head, .callout, td, th { overflow-wrap: break-word; hyphens: auto; }
.prose a, .prose code { overflow-wrap: anywhere; }
/* A closed language menu takes no space at all. */
.lang-menu:not([open]) .lang-list { display: none; }

.site-footer a, .site-footer li { overflow-wrap: anywhere; }

/* ===================== Document types, presets, line tax, sharing, status ===================== */
.doc-tabs { margin-bottom: 14px; }
.doc-tabs ul { list-style: none; margin: 0; padding: 4px; display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); width: max-content; max-width: 100%; }
.doc-tabs ul::-webkit-scrollbar { display: none; }
.doc-tabs a { display: block; white-space: nowrap; padding: 8px 14px; border-radius: var(--radius-s); color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: .9375rem; }
.doc-tabs a:hover { background: var(--desk); color: var(--ink); }
.doc-tabs a[aria-current="page"] { background: var(--ink); color: var(--paper); }

.terms-box { display: grid; gap: 6px; min-width: 0; }
.terms-box .terms-preset { padding-inline-end: 28px; }
.terms-box input[hidden] { display: none; }
[data-row][hidden] { display: none !important; }

.check { display: flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--ink-2); cursor: pointer; margin: 4px 0 2px; }
.check input { width: 18px; height: 18px; accent-color: var(--green); flex: none; }

/* per-line tax column only when switched on */
.th-tax, .c-tax { display: none; }
.sheet.line-tax .th-tax, .sheet.line-tax .c-tax { display: block; }
.th-tax { color: var(--paper); font-weight: 600; font-size: .875rem; padding: 8px 9px; text-align: end; }
.sheet.line-tax .items-head, .sheet.line-tax .item-row { grid-template-columns: minmax(0, 1fr) 80px 110px 76px 110px 34px; }
.tax-group { color: var(--ink-2); }
.tax-group .tg-label { padding: 8px 9px; text-align: end; font-size: .9375rem; }
.tax-group output { padding: 8px 9px; text-align: end; }
@media (max-width: 720px) {
  .sheet.line-tax .item-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 34px; grid-template-areas: "desc desc rm" "qty rate rate" "tax amt amt"; }
  .sheet.line-tax .item-row .c-tax { grid-area: tax; }
}

/* share sheet */
.share-sheet { border: 0; border-radius: var(--radius-m); padding: 22px; width: min(380px, calc(100vw - 32px)); background: var(--paper); color: var(--ink); box-shadow: var(--shadow); }
.share-sheet::backdrop { background: rgba(10, 25, 30, .45); }
.share-sheet h2 { font-size: 1.05rem; margin: 0 32px 16px 0; }
[dir="rtl"] .share-sheet h2 { margin: 0 0 16px 32px; }
.share-actions { display: grid; gap: 8px; }
.share-actions .btn { width: 100%; justify-content: center; min-height: 46px; }
.share-close { position: absolute; top: 12px; inset-inline-end: 12px; width: 34px; height: 34px; border: 0; background: transparent; color: var(--ink-2); border-radius: 50%; cursor: pointer; display: grid; place-items: center; }
.share-close:hover { background: var(--desk); }
.share-close svg { width: 18px; height: 18px; }
.btn-block + .btn-block { margin-top: 8px; }
.mobile-bar .icon-only { width: 46px; min-width: 46px; padding: 0; justify-content: center; }
.mobile-bar .icon-only svg { width: 20px; height: 20px; margin: 0; }

/* My invoices: status, filter, outstanding, backup */
.status { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: .8125rem; font-weight: 600; white-space: nowrap; }
.status-paid { background: color-mix(in srgb, var(--green) 14%, transparent); color: var(--green); }
.status-unpaid { background: var(--desk); color: var(--ink-2); }
.status-overdue { background: color-mix(in srgb, #b4232f 14%, transparent); color: #b4232f; }
[data-theme="dark"] .status-overdue { color: #ff8a93; }
.history-filter { min-height: 38px; padding: 6px 30px 6px 10px; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); color: var(--ink); font: inherit; }
.history-outstanding { margin: 0 0 14px; padding: 12px 14px; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); }
.history-none { color: var(--ink-2); padding: 20px 0; }
.backup-card { margin-top: 28px; padding: 18px 20px; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-m); }
.backup-card h2 { font-size: 1.1rem; margin: 0 0 6px; }
.backup-card p { margin: 0 0 12px; color: var(--ink-2); }
.backup-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.backup-actions label.btn { cursor: pointer; }
.c-type { color: var(--ink-2); white-space: nowrap; }
.doc-links { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.doc-links a { display: inline-block; padding: 10px 16px; border: 1px solid var(--rule); border-radius: var(--radius-m); background: var(--paper); text-decoration: none; font-weight: 500; }
.doc-links a:hover { border-color: var(--green); }
.adj-row[hidden], .total-row[hidden], .meta-row[hidden] { display: none !important; }
.guide-nav-sub { margin-top: 18px !important; }
.guide-nav ul { list-style: none; padding: 0; margin: 0; }
.guide-nav ul a { display: block; padding: 6px 10px; border-radius: var(--radius-s); color: var(--ink-2); text-decoration: none; font-size: .9375rem; }
.guide-nav ul a:hover { background: var(--paper); color: var(--ink); }
.guide-nav ul a[aria-current="page"] { background: var(--paper); color: var(--ink); font-weight: 600; }
.page-head .checked { color: var(--ink-3); font-size: .9rem; margin-top: 8px; }
.country-links, .sources { padding-inline-start: 1.2em; }
.sources a { overflow-wrap: anywhere; }
.guide-nav ul a::before { content: none; }
.guide-nav ul a { padding: 7px 14px; border-radius: 0; margin-inline-start: -1px; border-inline-start: 2px solid transparent; }
.guide-nav ul a[aria-current="page"] { background: transparent; border-inline-start-color: var(--green); }
/* Longer brand name: shrink gracefully on small phones. */
.brand { min-width: 0; }
.brand span { white-space: nowrap; }
@media (max-width: 420px) {
  .header-inner { gap: 6px; }
  .brand { gap: 7px; font-size: 1rem; }
  .brand-mark { width: 26px; height: 26px; }
  .header-tools { gap: 2px; }
}
@media (max-width: 340px) { .brand { font-size: .9375rem; letter-spacing: -.03em; } .brand-mark { width: 24px; height: 24px; } }