/* Existing CSS (BuildyBot viewer layout) */
:root {
  --app-header-height: 48px;
  --app-header-bg: var(--nav-bg);
  --app-header-text: var(--nav-text);
  --app-header-border: var(--border-color);
  --app-header-font-size: 0.88rem;
  --app-header-padding-x: 1rem;
  --app-back-btn-bg: transparent;
  --app-back-btn-color: var(--nav-text);
  --app-back-btn-hover-bg: rgba(255, 255, 255, 0.12);
  --app-back-btn-radius: var(--radius-sm);
  --app-body-bg: var(--bg);
  --app-body-padding: 0;
}

.app-viewer-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  display: flex;
  align-items: center;
  height: var(--app-header-height);
  background: var(--app-header-bg);
  color: var(--app-header-text);
  border-bottom: 1px solid var(--app-header-border);
  padding: 0 var(--app-header-padding-x);
  gap: 0.75rem;
  font-size: var(--app-header-font-size);
  transition: background-color var(--transition-speed, 0.2s) ease,
              border-color var(--transition-speed, 0.2s) ease;
}

.app-viewer-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  background: var(--app-back-btn-bg);
  color: var(--app-back-btn-color);
  border: none;
  border-radius: var(--app-back-btn-radius);
  font-size: inherit;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease;
}

.app-viewer-back:hover,
.app-viewer-back:focus-visible {
  background: var(--app-back-btn-hover-bg);
  color: var(--app-back-btn-color);
  text-decoration: none;
}

.app-viewer-back i { font-size: 1.1em; }
.app-viewer-sep { width: 1px; height: 1.2rem; background: currentColor; opacity: 0.25; flex-shrink: 0; }
.app-viewer-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.app-viewer-actions { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.app-viewer-body { flex: 1; background: var(--app-body-bg); padding: var(--app-body-padding); min-height: calc(100vh - var(--app-header-height)); }

@media (max-width: 575.98px) {
  .app-viewer-header { gap: 0.5rem; --app-header-padding-x: 0.65rem; }
  .app-viewer-back span { display: none; }
}

/* ============================================================
   INVOICE MAKER — APP STYLES
   ============================================================ */

:root{
  --bg: #0b1220;
  --panel: #0f1a2e;
  --panel-2: #0c1628;
  --text: #e7eefc;
  --muted: rgba(231,238,252,0.72);
  --border: rgba(231,238,252,0.12);
  --border-2: rgba(231,238,252,0.18);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 12px;
  --radius-sm: 10px;
  --focus: 0 0 0 3px rgba(84, 182, 255, 0.25);

  --primary: #4aa3ff;
  --primary-2: #2b82f6;
  --danger: #ff5c7a;
  --ok: #39d98a;

  --nav-bg: rgba(15,26,46,0.92);
  --nav-text: var(--text);
  --border-color: var(--border);
  --transition-speed: 0.2s;

  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{ box-sizing: border-box; }
html, body { height: 100%; }
body{
  margin:0;
  font-family: var(--sans);
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% 0%, rgba(74,163,255,0.10), transparent 60%),
              radial-gradient(900px 700px at 100% 20%, rgba(57,217,138,0.08), transparent 55%),
              var(--bg);
}

.app{ min-height: 100vh; display:flex; flex-direction:column; }

.layout{
  display:grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 14px;
  padding: 14px;
  align-items: start;
}

@media (max-width: 1024px){
  .layout{ grid-template-columns: 1fr; }
  .pane-preview{ order: 2; }
}

.pane{ min-width:0; }
.pane-editor{ display:flex; flex-direction:column; gap: 14px; }
.pane-preview{ position: sticky; top: calc(var(--app-header-height) + 14px); align-self:start; height: calc(100vh - var(--app-header-height) - 28px); overflow:auto; padding-right: 6px; }
@media (max-width: 1024px){
  .pane-preview{ position: relative; top: 0; height: auto; overflow: visible; padding-right: 0; }
}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent 42%),
              var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: clip;
}

.card-header{
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  display:flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.02);
}
.card-title{ font-weight: 700; letter-spacing: 0.2px; }
.header-inline{ margin-left:auto; display:flex; gap: 8px; align-items:center; }

.sticky-head{ position: sticky; top: 0; z-index: 5; }

.divider{ height: 1px; background: var(--border); margin: 12px 0; }

.grid{ padding: 12px 14px; display:grid; gap: 12px; }
.grid.one{ grid-template-columns: 1fr; }
.grid.two{ grid-template-columns: 1fr 1fr; }
.grid.three{ grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 640px){
  .grid.two, .grid.three{ grid-template-columns: 1fr; }
}
.span2{ grid-column: 1 / -1; }

.field label{
  display:block;
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0 0 6px;
}
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="date"],
.field input[type="number"],
.field select,
.field textarea{
  width:100%;
  padding: 10px 10px;
  border-radius: 10px;
  border: 1px solid var(--border-2);
  background: rgba(0,0,0,0.18);
  color: var(--text);
  outline: none;
}
.field textarea{ resize: vertical; min-height: 84px; }
.field input:focus, .field select:focus, .field textarea:focus{ box-shadow: var(--focus); border-color: rgba(74,163,255,0.55); }

.field.compact label{ margin-bottom: 4px; }
.field.compact select{ padding: 8px 10px; }

.row{ display:flex; gap: 8px; align-items:center; }
.row > *{ flex: 1; }
.row > button{ flex: 0 0 auto; }

.hint{ margin-top: 6px; font-size: 0.78rem; color: rgba(231,238,252,0.6); }

.btn{
  border: 1px solid var(--border-2);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 9px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, border-color 0.15s ease;
  user-select: none;
  white-space: nowrap;
}
.btn:hover{ background: rgba(255,255,255,0.07); border-color: rgba(231,238,252,0.28); }
.btn:active{ transform: translateY(1px); }
.btn:focus-visible{ outline:none; box-shadow: var(--focus); }
.btn-primary{
  background: linear-gradient(180deg, rgba(74,163,255,0.22), rgba(74,163,255,0.10));
  border-color: rgba(74,163,255,0.55);
}
.btn-primary:hover{ background: linear-gradient(180deg, rgba(74,163,255,0.30), rgba(74,163,255,0.12)); }
.btn-ghost{ background: rgba(255,255,255,0.02); }

.icon-btn{
  border: 1px solid var(--border-2);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  width: 34px; height: 34px;
  border-radius: 10px;
  cursor:pointer;
}
.icon-btn:hover{ background: rgba(255,255,255,0.07); }

.chip{
  font-size: 0.78rem;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-2);
  color: rgba(231,238,252,0.85);
  background: rgba(0,0,0,0.20);
}
.chip.ok{ border-color: rgba(57,217,138,0.5); color: rgba(57,217,138,0.95); }
.chip.warn{ border-color: rgba(255,200,87,0.55); color: rgba(255,200,87,0.95); }

.block{
  border: 1px dashed rgba(231,238,252,0.18);
  background: rgba(0,0,0,0.12);
  border-radius: 10px;
  padding: 10px;
  color: rgba(231,238,252,0.86);
  min-height: 54px;
}

.table-wrap{ padding: 0 14px 10px; overflow:auto; }
table{ border-collapse: collapse; width: 100%; }
.items th, .items td{
  border-bottom: 1px solid rgba(231,238,252,0.10);
  padding: 8px 8px;
  vertical-align: middle;
}
.items thead th{
  position: sticky; top: 0;
  background: rgba(15,26,46,0.94);
  z-index: 2;
  font-size: 0.78rem;
  color: rgba(231,238,252,0.65);
  text-align:left;
}
.items .col-qty, .items .col-price, .items .col-total{ width: 110px; }
.items .col-taxable{ width: 64px; text-align:center; }
.items .col-actions{ width: 42px; text-align:right; }
.items input[type="text"], .items input[type="number"]{
  width: 100%;
  padding: 8px 9px;
  border-radius: 10px;
  border: 1px solid rgba(231,238,252,0.14);
  background: rgba(0,0,0,0.18);
  color: var(--text);
}
.items input:focus{ box-shadow: var(--focus); border-color: rgba(74,163,255,0.55); outline:none; }
.items .num{ text-align:right; font-family: var(--mono); }
.items .line-total{ font-family: var(--mono); text-align:right; }
.trash{
  border:none;
  background: transparent;
  color: rgba(231,238,252,0.72);
  cursor:pointer;
  padding: 6px 8px;
  border-radius: 10px;
}
.trash:hover{ background: rgba(255,92,122,0.12); color: rgba(255,92,122,0.95); }

.footer-row{
  padding: 10px 14px 14px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.kbd-hint{ color: rgba(231,238,252,0.65); font-size: 0.8rem; display:flex; gap: 8px; align-items:center; flex-wrap: wrap; }
.kbd{
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid rgba(231,238,252,0.18);
  background: rgba(0,0,0,0.18);
  color: rgba(231,238,252,0.85);
}

.seg{
  display:flex;
  border: 1px solid rgba(231,238,252,0.18);
  border-radius: 10px;
  overflow:hidden;
  flex: 0 0 auto;
}
.seg-btn{
  padding: 9px 10px;
  border: none;
  background: rgba(0,0,0,0.20);
  color: rgba(231,238,252,0.78);
  cursor:pointer;
  width: 40px;
}
.seg-btn.active{
  background: rgba(74,163,255,0.22);
  color: rgba(231,238,252,0.98);
}

.summary{
  margin: 0 14px 14px;
  border: 1px solid rgba(231,238,252,0.14);
  border-radius: 12px;
  background: rgba(0,0,0,0.14);
  padding: 10px;
}
.sticky-summary{ position: sticky; bottom: 10px; z-index: 3; backdrop-filter: blur(6px); }
.sum-row{ display:flex; justify-content: space-between; padding: 6px 4px; }
.sum-total{ border-top: 1px solid rgba(231,238,252,0.14); margin-top: 6px; padding-top: 10px; font-weight: 800; font-size: 1.05rem; }
.actions-row{ display:flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.actions-row .btn{ flex: 1; }
.actions-row .btn-primary{ flex: 1.3; }

.muted{ color: var(--muted); }
.small{ font-size: 0.82rem; }

#paidDetailsWrap{ display:none; }
#paidDetailsWrap.show{ display:block; }

/* PREVIEW */
.preview{
  background: #ffffff;
  color: #0a0f1c;
  border-radius: var(--radius);
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: var(--shadow);
  padding: 22px;
  min-height: 720px;
}
.inv-top{ display:flex; justify-content: space-between; gap: 18px; }
.biz-name{ font-weight: 800; font-size: 1.25rem; letter-spacing: 0.2px; }
.biz-lines{ margin-top: 6px; font-size: 0.92rem; color: rgba(10,15,28,0.72); white-space: pre-line; }
.meta{ text-align:right; }
.meta-title{ font-weight: 900; letter-spacing: 0.12em; font-size: 0.95rem; }
.meta-grid{ margin-top: 10px; display:grid; grid-template-columns: auto auto; gap: 6px 10px; font-size: 0.92rem; }
.meta-label{ color: rgba(10,15,28,0.6); }
.meta-val{ font-weight: 600; }

.inv-bill{ margin-top: 18px; display:flex; justify-content: space-between; gap: 18px; }
.section-label{ font-size: 0.78rem; letter-spacing: 0.08em; font-weight: 800; color: rgba(10,15,28,0.55); text-transform: uppercase; }
.billto-block{ margin-top: 8px; white-space: pre-line; font-size: 0.95rem; }
.amount-due{ margin-top: 8px; font-size: 1.5rem; font-weight: 900; }
.paid-note{ margin-top: 6px; color: rgba(10,15,28,0.7); font-size: 0.92rem; }

.inv-table-wrap{ margin-top: 18px; }
.inv-table{ width:100%; border-collapse: collapse; font-size: 0.95rem; }
.inv-table th, .inv-table td{ border-bottom: 1px solid rgba(0,0,0,0.10); padding: 10px 8px; }
.inv-table thead th{ color: rgba(10,15,28,0.72); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; }
.inv-table .num{ text-align:right; white-space: nowrap; }
.inv-table tbody tr{ break-inside: avoid; }

.inv-bottom{
  margin-top: 18px;
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
}
@media (max-width: 1024px){
  .inv-bottom{ grid-template-columns: 1fr; }
}
.pre{ white-space: pre-line; color: rgba(10,15,28,0.78); font-size: 0.95rem; min-height: 14px; }
.totals-box{
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 12px;
  padding: 12px;
  background: rgba(0,0,0,0.02);
  align-self:start;
}
.trow{ display:flex; justify-content: space-between; padding: 7px 2px; }
.ttotal{ border-top: 1px solid rgba(0,0,0,0.12); padding-top: 10px; margin-top: 6px; font-weight: 900; font-size: 1.1rem; }

.inv-footer{ margin-top: 18px; padding-top: 10px; border-top: 1px dashed rgba(0,0,0,0.18); }
.inv-footer .muted{ color: rgba(10,15,28,0.6); }

/* MODALS */
.modal{
  position: fixed;
  inset: 0;
  display:none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.55);
  padding: 18px;
  z-index: 2000;
}
.modal.show{ display:flex; }
.modal-panel{
  width: min(860px, 100%);
  max-height: min(90vh, 900px);
  overflow: auto;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.modal-head, .modal-foot{
  padding: 12px 14px;
  display:flex;
  align-items:center;
  gap: 10px;
}
.modal-head{ border-bottom: 1px solid var(--border); position: sticky; top: 0; background: rgba(15,26,46,0.98); }
.modal-title{ font-weight: 800; }
.modal-body{ padding: 0; }
.modal-foot{ border-top: 1px solid var(--border); background: rgba(0,0,0,0.10); position: sticky; bottom: 0; }
.modal-foot .spacer{ flex:1; }

.file-btn{ display:inline-flex; align-items:center; justify-content:center; }
#importCustomersInput{ display:none; }

.mini-actions{ display:flex; gap: 8px; flex-wrap: wrap; }

/* PRINT */
@page { margin: 14mm; }
@media print{
  body{ background: #fff !important; }
  .app-viewer-header, .pane-editor, .modal{ display:none !important; }
  .app-viewer-body{ padding:0 !important; min-height: auto; }
  .layout{ padding:0; grid-template-columns: 1fr; }
  .pane-preview{ position: static !important; height: auto !important; overflow: visible !important; padding:0; }
  .preview{
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0;
    min-height: auto;
  }
  .inv-table thead{ display: table-header-group; }
  a[href]:after{ content: ""; }
}