:root {
  --bg: #f3f5f8;
  --panel: #ffffff;
  --text: #172033;
  --muted: #6b7280;
  --line: #dde3ea;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --shadow: 0 12px 30px rgba(23, 32, 51, .10);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif; color: var(--text); background: var(--bg); }
button { font: inherit; cursor: pointer; border: 0; }
.hidden { display: none !important; }
.topbar { height: 78px; background: var(--panel); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; position: sticky; top: 0; z-index: 10; }
.topbar h1 { margin: 0; font-size: 24px; }
.topbar p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.top-actions { display: flex; gap: 10px; }
.primary, .ghost { border-radius: 9px; padding: 10px 14px; transition: .15s ease; }
.primary { background: var(--primary); color: #fff; font-weight: 700; }
.primary:hover { background: var(--primary-dark); }
.ghost { background: #eef2f7; color: var(--text); }
.ghost:hover { background: #e2e8f0; }
main { min-height: calc(100vh - 78px); }
.upload-card { display: grid; place-items: center; min-height: calc(100vh - 78px); padding: 32px; }
.drop-zone { width: min(720px, 100%); background: var(--panel); border: 2px dashed #aab7c8; border-radius: 20px; padding: 64px 28px; text-align: center; box-shadow: var(--shadow); transition: .15s ease; }
.drop-zone.dragover { border-color: var(--primary); background: #eff6ff; transform: translateY(-2px); }
.drop-icon { width: 74px; height: 74px; border-radius: 18px; margin: 0 auto 18px; display: grid; place-items: center; background: #fee2e2; color: #b91c1c; font-weight: 900; }
.drop-zone h2 { margin: 0 0 6px; }
.drop-zone p { color: var(--muted); }
.drop-zone small { display: block; margin-top: 18px; color: var(--muted); }
.workspace { display: grid; grid-template-columns: 240px minmax(420px, 1fr) 330px; grid-template-rows: minmax(460px, calc(100vh - 310px)) 220px; gap: 12px; padding: 12px; }
.sidebar, .viewer-panel, .recap-panel, .thumbs-panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.sidebar { grid-column: 1; grid-row: 1 / span 2; }
.viewer-panel { grid-column: 2; grid-row: 1; display: flex; flex-direction: column; }
.recap-panel { grid-column: 3; grid-row: 1 / span 2; padding: 16px; overflow: auto; }
.thumbs-panel { grid-column: 2; grid-row: 2; }
.sidebar-head, .thumbs-head { padding: 14px 16px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.sidebar-head h2, .recap-panel h2 { margin: 0; font-size: 18px; }
.sidebar-head span { background: #e0e7ff; color: #3730a3; padding: 4px 8px; border-radius: 999px; font-size: 12px; font-weight: 800; }
.invoice-list { padding: 8px; overflow: auto; height: calc(100% - 52px); }
.invoice-card { border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin-bottom: 8px; cursor: pointer; }
.invoice-card.active { border-color: var(--primary); background: #eff6ff; }
.invoice-card strong { display: block; }
.invoice-card small { color: var(--muted); }
.viewer-toolbar, .modal-toolbar { min-height: 52px; padding: 8px 12px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 8px; }
.spacer { flex: 1; }
.viewer-wrap { position: relative; flex: 1; overflow: auto; display: grid; place-items: start center; padding: 20px; background: #cbd5e1; }
#mainCanvas, #modalCanvas { background: #fff; box-shadow: 0 6px 24px rgba(0,0,0,.18); max-width: none; }
.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); background: #111827; color: white; padding: 12px 18px; border-radius: 999px; z-index: 100; }
.thumbs-head { align-items: flex-start; }
.thumbs-head span { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }
.kbd-help { color: var(--muted); font-size: 12px; text-align: right; }
.thumbs { display: flex; gap: 14px; overflow-x: auto; padding: 14px; height: 165px; align-items: flex-start; }
.thumb-wrap { position: relative; flex: 0 0 auto; }
.thumb { width: 94px; height: 132px; object-fit: contain; background: #fff; border: 2px solid transparent; border-radius: 8px; box-shadow: 0 3px 10px rgba(0,0,0,.15); cursor: pointer; }
.thumb.active { border-color: var(--primary); }
.thumb-label { text-align: center; font-size: 12px; margin-top: 4px; }
.split-marker { position: absolute; left: -9px; top: -8px; bottom: 19px; width: 4px; background: var(--primary); border-radius: 4px; }
.split-marker::before { content: "Nouvelle facture"; position: absolute; top: -18px; left: -2px; color: var(--primary); font-size: 9px; white-space: nowrap; font-weight: 800; }
.recap-card { border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-bottom: 10px; }
.recap-card.active { border-color: var(--primary); }
.recap-card label { display: block; color: var(--muted); font-size: 11px; margin-top: 7px; }
.recap-card input { width: 100%; border: 1px solid var(--line); border-radius: 7px; padding: 7px 8px; margin-top: 3px; }
.recap-card .pages { font-size: 12px; color: var(--muted); }
.modal { position: fixed; inset: 0; z-index: 50; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(15,23,42,.82); }
.modal-card { position: absolute; inset: 4vh 4vw; background: var(--panel); border-radius: 14px; display: flex; flex-direction: column; overflow: hidden; }
.modal-close { position: absolute; top: 8px; right: 10px; z-index: 2; width: 34px; height: 34px; border-radius: 50%; background: #111827; color: #fff; font-size: 24px; }
.modal-canvas-wrap { flex: 1; overflow: auto; background: #94a3b8; padding: 24px; display: grid; place-items: start center; }
.progress-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.72); z-index: 90; display: grid; place-items: center; }
.progress-card { width: min(480px, calc(100% - 32px)); background: white; border-radius: 16px; padding: 24px; box-shadow: var(--shadow); }
.progress-card h3 { margin-top: 0; }
.progress-bar { height: 12px; background: #e5e7eb; border-radius: 999px; overflow: hidden; }
.progress-bar > div { height: 100%; width: 0%; background: var(--primary); transition: width .15s ease; }
.progress-card p { margin-bottom: 0; color: var(--muted); }
@media (max-width: 1100px) {
  .workspace { grid-template-columns: 210px 1fr; grid-template-rows: 520px 240px auto; }
  .recap-panel { grid-column: 1 / span 2; grid-row: 3; max-height: 420px; }
}
@media (max-width: 760px) {
  .topbar { height: auto; padding: 12px; align-items: flex-start; gap: 10px; }
  .workspace { display: block; padding: 8px; }
  .sidebar, .viewer-panel, .recap-panel, .thumbs-panel { margin-bottom: 10px; }
  .sidebar { max-height: 220px; }
  .viewer-panel { min-height: 520px; }
  .thumbs-panel { min-height: 220px; }
  .top-actions { flex-wrap: wrap; justify-content: flex-end; }
}
.excluded-summary { margin: 8px; padding: 8px 10px; border-radius: 9px; background: #fef2f2; color: #991b1b; font-size: 12px; }
.invoice-card em { display:block; margin-top:7px; color:var(--muted); font-size:10px; font-style:normal; opacity:.65; }
.invoice-card.drop-target { border-color: var(--success); background:#f0fdf4; transform:scale(1.01); }
.thumb-wrap.dragging { opacity:.4; }
.thumb-wrap.excluded .thumb { filter:grayscale(1); opacity:.32; border-color:var(--danger); }
.excluded-badge { display:none; position:absolute; top:48px; left:14px; right:14px; text-align:center; padding:4px; border-radius:6px; background:rgba(220,38,38,.92); color:white; font-size:11px; font-weight:800; transform:rotate(-8deg); pointer-events:none; }
.thumb-wrap.excluded .excluded-badge { display:block; }

.global-drop-overlay { position:fixed; inset:0; z-index:120; display:grid; place-items:center; background:rgba(37,99,235,.16); backdrop-filter:blur(3px); pointer-events:none; }
.global-drop-overlay > div { width:min(620px,calc(100% - 40px)); padding:56px 28px; border:3px dashed var(--primary); border-radius:22px; background:rgba(255,255,255,.96); text-align:center; box-shadow:var(--shadow); }
.global-drop-overlay strong { display:block; font-size:28px; color:var(--primary); }
.global-drop-overlay span { display:block; margin-top:8px; color:var(--muted); }
.thumb-wrap.drop-before::before, .thumb-wrap.drop-after::after { content:""; position:absolute; top:-7px; bottom:18px; width:5px; border-radius:5px; background:var(--success); z-index:4; }
.thumb-wrap.drop-before::before { left:-9px; }
.thumb-wrap.drop-after::after { right:-9px; }
.thumb-wrap { cursor:grab; }
.thumb-wrap.dragging { cursor:grabbing; }
.thumb-wrap.selected .thumb { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.22), 0 3px 10px rgba(0,0,0,.15); }
.thumb-wrap.selected:not(.excluded)::after { content: "✓"; position:absolute; top:5px; right:5px; width:22px; height:22px; display:grid; place-items:center; border-radius:50%; background:var(--primary); color:#fff; font-size:13px; font-weight:900; pointer-events:none; }


/* Indicateurs persistants dans la visionneuse et en plein écran */
.viewer-invoice-badge {
  position: sticky;
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 8;
  max-width: calc(100% - 28px);
  padding: 9px 13px;
  border-radius: 9px;
  background: rgba(15, 23, 42, .88);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
  box-shadow: 0 4px 14px rgba(0,0,0,.22);
  pointer-events: none;
  backdrop-filter: blur(4px);
}
.viewer-excluded-overlay {
  position: absolute;
  inset: 0;
  z-index: 7;
  display: grid;
  place-items: center;
  pointer-events: none;
  background:
    repeating-linear-gradient(-45deg, rgba(71,85,105,.19) 0 18px, rgba(148,163,184,.36) 18px 36px),
    rgba(71,85,105,.24);
}
.viewer-excluded-overlay span {
  padding: 16px 28px;
  border: 3px solid rgba(255,255,255,.92);
  border-radius: 12px;
  background: rgba(51,65,85,.88);
  color: #fff;
  font-size: clamp(22px, 4vw, 48px);
  font-weight: 950;
  letter-spacing: .08em;
  transform: rotate(-8deg);
  box-shadow: 0 8px 30px rgba(0,0,0,.28);
}
.modal-canvas-wrap { position: relative; }
.viewer-wrap:fullscreen, .modal-card:fullscreen { background: #64748b; }
.viewer-wrap:fullscreen .viewer-invoice-badge,
.modal-card:fullscreen .viewer-invoice-badge {
  position: fixed;
  top: 18px;
  left: 18px;
  font-size: 16px;
  padding: 11px 15px;
}
.viewer-wrap:fullscreen .viewer-excluded-overlay,
.modal-card:fullscreen .viewer-excluded-overlay { position: fixed; }

.viewer-invoice-badge.excluded-page-label{background:rgba(75,85,99,.92);color:#fff;border:1px solid rgba(255,255,255,.35);}