/* ============================================
   Faturas IA — Styles
   Design Direction: ART DECO LUXE (Hard Rule #16 — unique, never reused)
   Brief: deep navy/charcoal + gold/brass + ivory; high-contrast display serif in
   tracked CAPS; strict symmetry, thin gold rules, geometric chevron/sunburst
   ornament, framed panels. Signature = deco corner frame + framed monogram on
   the document header.
   ============================================ */

:root {
  /* Surfaces */
  --navy: #0d1626;
  --navy-2: #0a111e;
  --panel-bg: #131f33;
  --panel-2: #18263d;
  --paper: #f6f1e6;            /* the invoice "paper" */
  --paper-line: #d9cfb6;

  /* Lines / borders */
  --line-gold: rgba(200,162,74,.34);
  --line-gold-soft: rgba(200,162,74,.18);
  --line-soft: rgba(244,239,227,.10);

  /* Gold / brass */
  --gold: #c8a24a;
  --gold-bright: #e7ca7e;
  --gold-deep: #9a7b32;

  /* Ivory text */
  --ivory: #f4efe3;
  --ivory-2: #d6cdb8;
  --ivory-3: #9a9683;
  --ink: #0c1320;              /* text on gold */

  /* Status (deco-toned) */
  --danger: #cf6552;
  --danger-soft: rgba(207,101,82,.14);
  --good: #6fae86;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Radius — deco favors sharp; keep small */
  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;

  /* Type */
  --serif: "Cormorant Garamond", Didot, "Bodoni MT", "Hoefler Text", Garamond, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Aliases used by the static legal pages (privacy-policy.html, data-deletion.html),
     mapped onto the Art Deco palette so they stay on-theme. */
  --bg: var(--navy);
  --bg-elev: var(--navy-2);
  --bg-card: var(--panel-bg);
  --border: var(--line-gold-soft);
  --text: var(--ivory);
  --text-muted: var(--ivory-2);
  --text-dim: var(--ivory-3);
  --accent: var(--gold-bright);
  --accent-pink: var(--gold);
  --low: var(--danger);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--navy);
  color: var(--ivory);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Deco background: deep navy with faint gold sunburst + vignette */
.bg-gradient {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(circle at 50% -10%, rgba(200,162,74,.10), transparent 45%),
    radial-gradient(circle at 50% 120%, rgba(200,162,74,.06), transparent 45%),
    repeating-conic-gradient(from 90deg at 50% 0%, rgba(200,162,74,.035) 0deg 4deg, transparent 4deg 16deg),
    var(--navy);
}

/* ---------- Screens ---------- */
.screen { display: none; min-height: 100vh; }
.screen.active { display: block; }

#gate-screen.active,
#key-screen.active {
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-lg);
}

/* ---------- Gate ---------- */
.gate-container {
  width: 100%; max-width: 460px; padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  position: relative;
  border: 1px solid var(--line-gold);
  background: linear-gradient(180deg, rgba(24,38,61,.9), rgba(19,31,51,.92));
  box-shadow: 0 30px 80px rgba(0,0,0,.5), inset 0 0 0 4px rgba(200,162,74,.06);
}
.gate-container::before,
.gate-container::after {
  content: ""; position: absolute; width: 26px; height: 26px;
  border: 2px solid var(--gold);
}
.gate-container::before { top: 10px; left: 10px; border-right: 0; border-bottom: 0; }
.gate-container::after { bottom: 10px; right: 10px; border-left: 0; border-top: 0; }

.gate-header { margin-bottom: var(--space-xl); }

/* Deco diamond above the title */
.gate-header::before {
  content: "✦"; display: block; color: var(--gold);
  font-size: 22px; letter-spacing: .3em; margin-bottom: var(--space-md);
}

.gradient-text {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(34px, 7vw, 48px);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ivory);
  line-height: 1.05;
}
.gradient-text::after {
  content: ""; display: block; width: 64px; height: 1px; margin: 14px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.subtitle {
  color: var(--ivory-2); font-size: 15px; margin-top: var(--space-md);
  font-weight: 400;
}

.community-badge {
  display: inline-block; margin-top: var(--space-lg);
  padding: 7px 16px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold-bright);
  border: 1px solid var(--line-gold);
  background: rgba(200,162,74,.06);
}

/* ---------- Forms ---------- */
.gate-form { margin-top: var(--space-xl); text-align: left; }
.form-group { margin-bottom: var(--space-lg); }

label {
  display: block; font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ivory-3); margin-bottom: 8px; font-weight: 600;
}

input, select, textarea {
  width: 100%; padding: 13px 14px;
  background: var(--navy-2);
  border: 1px solid rgba(200,162,74,.30);
  border-radius: var(--radius-sm);
  box-shadow: inset 0 1px 3px rgba(0,0,0,.3);
  color: var(--ivory); font-size: 15px; font-family: var(--sans);
  outline: none; transition: border-color .2s, box-shadow .2s;
}
input::placeholder, textarea::placeholder { color: var(--ivory-3); }
input:focus, select:focus, textarea:focus {
  border-color: var(--gold);
  box-shadow: inset 0 1px 3px rgba(0,0,0,.3), 0 0 0 3px rgba(200,162,74,.14);
}
select { appearance: none; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--gold) 50%), linear-gradient(135deg, var(--gold) 50%, transparent 50%);
  background-position: calc(100% - 18px) 19px, calc(100% - 13px) 19px;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}

/* ---------- Buttons ---------- */
.btn-primary {
  width: 100%; padding: 14px 20px; cursor: pointer;
  font-family: var(--serif); font-size: 16px; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink);
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  border: 1px solid var(--gold-deep); border-radius: var(--radius-sm);
  transition: transform .15s, box-shadow .2s, filter .2s;
  box-shadow: 0 6px 20px rgba(200,162,74,.18);
}
.btn-primary:hover:not(:disabled) { filter: brightness(1.06); box-shadow: 0 8px 26px rgba(200,162,74,.28); }
.btn-primary:active:not(:disabled) { transform: translateY(1px); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; }

.btn-secondary {
  width: 100%; padding: 13px 20px; cursor: pointer;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase; font-weight: 600;
  color: var(--gold-bright);
  background: transparent; border: 1px solid var(--line-gold);
  border-radius: var(--radius-sm); transition: background .2s, border-color .2s;
}
.btn-secondary:hover { background: rgba(200,162,74,.08); border-color: var(--gold); }

.btn-danger {
  padding: 12px 18px; cursor: pointer; font-size: 12px; letter-spacing: .1em;
  text-transform: uppercase; font-weight: 600;
  color: var(--danger); background: var(--danger-soft);
  border: 1px solid rgba(207,101,82,.3); border-radius: var(--radius-sm);
  transition: background .2s;
}
.btn-danger:hover { background: rgba(207,101,82,.22); }

.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; cursor: pointer;
  color: var(--ivory-2); background: transparent;
  border: 1px solid var(--line-gold-soft); border-radius: var(--radius-sm);
  text-decoration: none; transition: border-color .2s, color .2s, background .2s;
}
.btn-icon:hover { color: var(--gold-bright); border-color: var(--gold); background: rgba(200,162,74,.06); }

.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-danger:focus-visible,
.btn-icon:focus-visible,
.seg button:focus-visible,
.mini-btn:focus-visible,
.add-item:focus-visible,
.key-toggle:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 2px;
}

.error-message {
  margin-top: var(--space-md); padding: 11px 14px;
  background: var(--danger-soft); border: 1px solid rgba(207,101,82,.3);
  border-radius: var(--radius-sm); color: var(--danger); font-size: 13px; text-align: center;
}

.gate-footer { margin-top: var(--space-xl); font-size: 13px; color: var(--ivory-3); }
.gate-footer a, .key-info a { color: var(--gold-bright); text-decoration: none; border-bottom: 1px solid var(--line-gold); }
.gate-footer a:hover { color: var(--gold); }

/* ---------- Key screen ---------- */
.key-container {
  width: 100%; max-width: 540px; padding: var(--space-2xl) var(--space-xl);
  position: relative;
  border: 1px solid var(--line-gold);
  background: linear-gradient(180deg, rgba(24,38,61,.9), rgba(19,31,51,.92));
  box-shadow: 0 30px 80px rgba(0,0,0,.5), inset 0 0 0 4px rgba(200,162,74,.06);
}
.key-container::before,
.key-container::after {
  content: ""; position: absolute; width: 26px; height: 26px;
  border: 2px solid var(--gold);
}
.key-container::before { top: 10px; left: 10px; border-right: 0; border-bottom: 0; }
.key-container::after { bottom: 10px; right: 10px; border-left: 0; border-top: 0; }
.key-container h2 {
  font-family: var(--serif); font-size: 30px; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase; text-align: center;
}
.key-container > .subtitle { text-align: center; margin-bottom: var(--space-xl); }

.key-inputs { display: flex; flex-direction: column; gap: var(--space-lg); }
.key-input-group label { margin-bottom: 8px; }
.key-input-wrapper { display: flex; gap: 8px; }
.key-input-wrapper input { flex: 1; }
.key-toggle {
  padding: 0 14px; cursor: pointer; font-size: 11px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--gold-bright);
  background: transparent; border: 1px solid var(--line-gold);
  border-radius: var(--radius-sm); white-space: nowrap;
}
.key-toggle:hover { background: rgba(200,162,74,.08); }
.key-status { margin-top: 7px; font-size: 12px; color: var(--ivory-3); }
.key-status.saved { color: var(--good); }

.key-actions { display: flex; flex-direction: column; gap: 10px; margin-top: var(--space-xl); }
.key-info { margin-top: var(--space-lg); border-top: 1px solid var(--line-soft); padding-top: var(--space-md); }
.key-info summary { cursor: pointer; font-size: 13px; color: var(--gold-bright); letter-spacing: .04em; }
.key-info-content { margin-top: var(--space-md); font-size: 13px; color: var(--ivory-2); display: flex; flex-direction: column; gap: 8px; }
.key-info code { background: var(--navy-2); padding: 2px 7px; border-radius: var(--radius-sm); color: var(--gold-bright); font-size: 12px; border: 1px solid var(--line-soft); }

/* ---------- App shell ---------- */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  border-bottom: 1px solid var(--line-gold);
  background: linear-gradient(180deg, rgba(13,22,38,.96), rgba(13,22,38,.82));
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 50;
}
.app-title {
  font-family: var(--serif); font-size: 24px; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; color: var(--ivory);
}
.app-title::before { content: "✦ "; color: var(--gold); font-size: .7em; vertical-align: middle; }
.header-right { display: flex; gap: 10px; }

.app-main { max-width: 1240px; margin: 0 auto; padding: var(--space-xl); }

.app-footer {
  text-align: center; padding: var(--space-xl); margin-top: var(--space-xl);
  border-top: 1px solid var(--line-gold-soft); color: var(--ivory-3); font-size: 13px;
}
.app-footer strong { color: var(--gold-bright); font-weight: 600; }
.footer-links { margin-top: 8px; }
.footer-links a { color: var(--ivory-3); text-decoration: none; border-bottom: 1px solid var(--line-soft); }
.footer-links a:hover { color: var(--gold-bright); }
.footer-sep { margin: 0 8px; color: var(--line-gold); }

/* ---------- Invoice builder layout ---------- */
.builder { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: var(--space-xl); align-items: start; }

/* Document-type toggle + actions toolbar */
.doc-toolbar {
  grid-column: 1 / -1;
  display: flex; flex-wrap: wrap; gap: var(--space-md);
  align-items: center; justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--line-gold);
  background: linear-gradient(180deg, var(--panel-2), var(--panel-bg));
}
.seg { display: inline-flex; border: 1px solid var(--line-gold); border-radius: var(--radius-sm); overflow: hidden; }
.seg button {
  padding: 9px 18px; cursor: pointer; background: transparent; border: 0;
  color: var(--ivory-3); font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  font-weight: 600; font-family: var(--sans); transition: background .2s, color .2s;
}
.seg button + button { border-left: 1px solid var(--line-gold-soft); }
.seg button.active { background: linear-gradient(180deg, var(--gold-bright), var(--gold)); color: var(--ink); }
.toolbar-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.toolbar-actions .btn-secondary, .toolbar-actions .btn-primary { width: auto; }

/* Editor column */
.editor { display: flex; flex-direction: column; gap: var(--space-lg); }

.panel {
  position: relative;
  border: 1px solid var(--line-gold);
  background: linear-gradient(180deg, var(--panel-2), var(--panel-bg));
  padding: var(--space-lg);
}
.panel-title {
  font-family: var(--serif); font-size: 19px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--gold-bright);
  margin-bottom: var(--space-lg); padding-bottom: 10px;
  border-bottom: 1px solid var(--line-gold-soft);
  display: flex; align-items: center; gap: 10px;
}
.panel-title::before { content: "▰"; color: var(--gold); font-size: .7em; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.grid-2 .full { grid-column: 1 / -1; }
@media (max-width: 540px) { .grid-2 { grid-template-columns: 1fr; } }

.field { margin-bottom: var(--space-md); }
.field:last-child { margin-bottom: 0; }

/* Line items */
.items-head, .item-row {
  display: grid;
  grid-template-columns: minmax(0,1fr) 70px 110px 110px 36px;
  gap: 8px; align-items: center;
}
.items-head { padding: 0 2px 8px; }
.items-head span { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ivory-3); font-weight: 600; }
.items-head span:nth-child(n+2) { text-align: right; }
.item-row { margin-bottom: 10px; }
.item-row .line-total { text-align: right; font-variant-numeric: tabular-nums; color: var(--ivory-2); font-size: 14px; padding-right: 4px; }
.item-row input { padding: 10px 11px; font-size: 14px; }
.item-row input[type="number"] { text-align: right; }
.row-del {
  width: 34px; height: 38px; display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--danger); background: transparent;
  border: 1px solid rgba(207,101,82,.25); border-radius: var(--radius-sm); font-size: 16px;
}
.row-del:hover { background: var(--danger-soft); }
@media (max-width: 620px) {
  .items-head { display: none; }
  .item-row { grid-template-columns: 1fr 1fr; grid-auto-rows: auto; gap: 6px; padding-bottom: 12px; border-bottom: 1px solid var(--line-soft); }
  .item-row .desc-cell { grid-column: 1 / -1; }
  .item-row .line-total { grid-column: 1 / -1; text-align: left; }
  .item-row .row-del { grid-column: 2; justify-self: end; }
}
.add-item {
  margin-top: 6px; padding: 10px; width: 100%; cursor: pointer;
  background: transparent; border: 1px dashed var(--line-gold);
  border-radius: var(--radius-sm); color: var(--gold-bright);
  font-size: 12px; letter-spacing: .1em; text-transform: uppercase; font-weight: 600;
}
.add-item:hover { background: rgba(200,162,74,.06); }

.hint { font-size: 12px; color: var(--ivory-3); margin-top: 6px; }

/* AI assist panel — subtly warmer to set the optional/assist panel apart */
.ai-panel {
  background: linear-gradient(180deg, rgba(200,162,74,.07), var(--panel-bg));
}
.ai-panel .panel-title::before { content: "✦"; }
.ai-row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-top: var(--space-md); }
.ai-row .field { flex: 1; min-width: 180px; margin: 0; }
.ai-row .btn-primary { width: auto; }
#ai-status { font-size: 13px; margin-top: 10px; min-height: 18px; }
.ai-out {
  margin-top: var(--space-md); padding: var(--space-md);
  border: 1px solid var(--line-gold-soft); background: var(--navy-2);
  display: none;
}
.ai-out.active { display: block; }
.ai-out h4 { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ivory-3); margin: var(--space-md) 0 6px; }
.ai-out h4:first-child { margin-top: 0; }
.ai-out p { font-size: 14px; color: var(--ivory); white-space: pre-wrap; }
.ai-block { margin-bottom: var(--space-md); }
.ai-block:last-child { margin-bottom: 0; }
.mini-btn {
  margin-top: 8px;
  padding: 6px 12px; cursor: pointer; font-size: 11px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--gold-bright); background: transparent; border: 1px solid var(--line-gold);
  border-radius: var(--radius-sm); font-weight: 600;
}
.mini-btn:hover { background: rgba(200,162,74,.08); }

/* ---------- Live preview (the "paper") ---------- */
.preview-wrap { position: sticky; top: 84px; }
.preview-label { font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--ivory-3); margin-bottom: 10px; text-align: center; }

.doc-paper {
  background: var(--paper);
  color: #1c1c1c;
  padding: 40px 38px;
  position: relative;
  box-shadow: 0 30px 70px rgba(0,0,0,.5);
  border: 1px solid #00000018;
}
/* Deco double frame on the paper */
.doc-paper::before {
  content: ""; position: absolute; inset: 14px;
  border: 1px solid var(--gold); pointer-events: none;
}
.doc-paper::after {
  content: ""; position: absolute; inset: 18px;
  border: 1px solid rgba(154,123,50,.4); pointer-events: none;
}
.doc-inner { position: relative; z-index: 1; }

.doc-head { text-align: center; padding-bottom: 18px; border-bottom: 2px solid var(--gold); }
.doc-monogram {
  width: 56px; height: 56px; margin: 0 auto 12px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--gold-deep); transform: rotate(45deg);
  background: #fff;
}
.doc-monogram span { transform: rotate(-45deg); font-family: var(--serif); font-weight: 700; font-size: 22px; color: var(--gold-deep); letter-spacing: .02em; }
.doc-issuer-name { font-family: var(--serif); font-size: 26px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: #1a1a1a; }
.doc-issuer-meta { font-size: 12px; color: #555; margin-top: 4px; line-height: 1.5; white-space: pre-wrap; }
.doc-type-badge {
  display: inline-block; margin-top: 12px; padding: 5px 18px;
  font-size: 12px; letter-spacing: .24em; text-transform: uppercase; font-weight: 700;
  color: var(--gold-deep); border: 1px solid var(--gold-deep);
}

.doc-meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 22px 0; }
.doc-block h5 { font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-deep); margin-bottom: 6px; border-bottom: 1px solid var(--paper-line); padding-bottom: 4px; }
.doc-block p { font-size: 13px; color: #2a2a2a; line-height: 1.55; white-space: pre-wrap; }
.doc-block .muted { color: #736d5a; }

.doc-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.doc-table th {
  font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: #fff;
  background: #15233a; padding: 9px 10px; text-align: left;
}
.doc-table th.num, .doc-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.doc-table td { padding: 9px 10px; font-size: 13px; color: #222; border-bottom: 1px solid var(--paper-line); }
.doc-table tr:nth-child(even) td { background: rgba(200,162,74,.07); }
.doc-table .desc { white-space: pre-wrap; }

.doc-totals { margin-top: 16px; margin-left: auto; width: 62%; }
.doc-totals .row { display: flex; justify-content: space-between; font-size: 13px; color: #333; padding: 5px 0; }
.doc-totals .row.grand {
  margin-top: 6px; padding: 10px 12px; font-family: var(--serif); font-size: 19px; font-weight: 700;
  letter-spacing: .06em; color: #15233a; background: rgba(200,162,74,.18);
  border-top: 2px solid var(--gold-deep); border-bottom: 2px solid var(--gold-deep);
}
.doc-totals .row.grand span:first-child { text-transform: uppercase; letter-spacing: .14em; font-size: 13px; align-self: center; }

.doc-pay { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--paper-line); }
.doc-pay h5 { font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-deep); margin-bottom: 6px; }
.doc-pay p { font-size: 13px; color: #2a2a2a; white-space: pre-wrap; line-height: 1.55; }

.doc-foot { margin-top: 26px; text-align: center; font-size: 11px; color: #6e6a58; letter-spacing: .04em; }
.doc-foot::before { content: "✦ ✦ ✦"; display: block; color: var(--gold-deep); letter-spacing: .5em; font-size: 9px; margin-bottom: 8px; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; padding: var(--space-lg); }
.modal-overlay { position: absolute; inset: 0; background: rgba(5,9,16,.78); backdrop-filter: blur(5px); }
.modal-content {
  position: relative; width: 100%; max-width: 480px; padding: var(--space-xl);
  border: 1px solid var(--line-gold);
  background: linear-gradient(180deg, var(--panel-2), var(--panel-bg));
  box-shadow: 0 30px 80px rgba(0,0,0,.6);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-lg); }
.modal-header h3 { font-family: var(--serif); font-size: 22px; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; }
.modal-actions { display: flex; gap: 10px; margin-top: var(--space-lg); }
.modal-actions .btn-primary { width: auto; flex: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .builder { grid-template-columns: 1fr; }
  .preview-wrap { position: static; }
  .app-main { padding: var(--space-lg) var(--space-md); }
}
@media (max-width: 480px) {
  .app-header { padding: var(--space-md); }
  .app-title { font-size: 19px; letter-spacing: .14em; }
  .header-right { gap: 6px; }
  .btn-icon { width: 36px; height: 36px; }
  .doc-toolbar { padding: var(--space-md); }
  .seg { width: 100%; }
  .seg button { flex: 1 1 0; padding: 9px 6px; font-size: 10px; letter-spacing: .06em; }
  .toolbar-actions { width: 100%; }
  .toolbar-actions .btn-secondary, .toolbar-actions .btn-primary { flex: 1 1 0; width: auto; white-space: nowrap; }
  .toolbar-actions .btn-primary { padding: 12px 10px; font-size: 13px; letter-spacing: .08em; }
  .toolbar-actions .btn-secondary { padding: 12px 8px; font-size: 11px; letter-spacing: .08em; }
  .doc-paper { padding: 26px 20px; }
  .doc-meta-grid { grid-template-columns: 1fr; gap: 14px; }
  .doc-totals { width: 100%; }
  .doc-table th, .doc-table td { padding: 7px 6px; font-size: 12px; }
  .doc-issuer-name { font-size: 21px; }
}

/* ---------- Print: isolate the paper ---------- */
@media print {
  @page { margin: 12mm; }
  body { background: #fff; }
  .bg-gradient, .app-header, .app-footer, .editor, .doc-toolbar,
  .preview-label, #feedback-btn, #feedback-modal, .key-info { display: none !important; }
  .screen, #app-screen { display: block !important; }
  .app-main { max-width: none; margin: 0; padding: 0; }
  .builder { display: block; gap: 0; }
  .preview-wrap { position: static; top: 0; }
  .doc-paper { box-shadow: none; border: none; padding: 0; }
  .doc-paper::before { inset: 0; }
  .doc-paper::after { inset: 4px; }
  .doc-table th,
  .doc-table tr:nth-child(even) td,
  .doc-totals .row.grand { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}