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

:root {
  --bg: #faf6f0;
  --panel: #ffffff;
  --panel2: #fffdf9;
  --ink: #2d2a26;
  --muted: #8a8378;
  --accent: #e8663c;
  --accent-dark: #d4532a;
  --accent-soft: #fdeee7;
  --green: #3f9d6b;
  --border: #e8e0d4;
  --shadow: 0 2px 10px rgba(80, 60, 40, .08);
  --foot-bg: #241f1a;
}

body.dark {
  --bg: #17140f;
  --panel: #241f1a;
  --panel2: #2a241e;
  --ink: #f0e9df;
  --muted: #a89d8e;
  --accent: #e8663c;
  --accent-dark: #f07a52;
  --accent-soft: #3a2a22;
  --green: #3f9d6b;
  --border: #3d362d;
  --shadow: 0 2px 10px rgba(0, 0, 0, .35);
  --foot-bg: #100d09;
}
body.dark .btn { background: var(--panel); color: var(--ink); }
body.dark .btn-primary { background: var(--accent); color: #fff; }
body.dark .btn-save { background: var(--green); color: #fff; }
body.dark .viewer { background: var(--bg); }
body.dark .thumb { background: var(--panel2); }

html, body { height: 100%; }

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---------- Barra superior ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 20;
}

.brand { display: flex; align-items: center; gap: 8px; font-size: 20px; }
.brand-icon { font-size: 24px; }
.brand-name b { color: var(--accent); }

.top-actions { display: flex; align-items: center; gap: 8px; flex: 1; }
.spacer { flex: 1; }

.btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--accent-soft); border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-save { background: var(--green); border-color: var(--green); color: #fff; font-weight: 600; }
.btn-save:hover { background: #33865a; color: #fff; }
.btn.big { font-size: 17px; padding: 12px 22px; }

/* ---------- Barra de herramientas ---------- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 8px 16px;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
  z-index: 15;
}

.btn-icon { padding: 8px 10px; font-size: 16px; }

/* Buscador */
.search-group { position: relative; }
#searchBox {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink);
  border-radius: 9px;
  padding: 7px 12px;
  font-size: 13px;
  width: 190px;
}
#searchBox:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.search-results {
  position: absolute;
  top: 110%;
  left: 0;
  width: 320px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 26px rgba(0,0,0,.18);
  z-index: 40;
}
.search-hit {
  padding: 8px 12px;
  font-size: 12.5px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  color: var(--ink);
}
.search-hit:hover { background: var(--accent-soft); }
.search-hit b { color: var(--accent); }
.search-hit .hit-page { color: var(--muted); font-size: 11px; }
.search-empty { padding: 10px 12px; font-size: 12.5px; color: var(--muted); }

.tool-group { display: flex; align-items: center; gap: 6px; }
.tool-group.nav { margin-left: auto; }

.tool {
  border: 1px solid transparent;
  background: transparent;
  padding: 7px 11px;
  border-radius: 9px;
  font-size: 13.5px;
  cursor: pointer;
  color: var(--ink);
  transition: all .12s;
  white-space: nowrap;
}
.tool:hover { background: var(--accent-soft); }
.tool.active { background: var(--accent); color: #fff; box-shadow: 0 2px 6px rgba(232,102,60,.35); }

.options label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  color: var(--muted);
}
.options input[type=number] { width: 54px; padding: 4px 6px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; }
.options input[type=color] { width: 32px; height: 26px; border: 1px solid var(--border); border-radius: 6px; padding: 1px; background: #fff; cursor: pointer; }
.options input[type=range] { width: 80px; accent-color: var(--accent); }

.sep { width: 1px; height: 22px; background: var(--border); margin: 0 4px; }
#pageLabel, #zoomLabel { font-size: 13px; color: var(--muted); min-width: 74px; text-align: center; }

/* ---------- Zona de trabajo ---------- */
.workspace { flex: 1; display: flex; min-height: 0; }

.sidebar {
  width: 172px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.sidebar-title { padding: 10px 12px 6px; font-size: 13px; font-weight: 600; }
.sidebar-title small { display: block; font-weight: 400; color: var(--muted); font-size: 10.5px; }

.thumbs { flex: 1; overflow-y: auto; padding: 8px; display: flex; flex-direction: column; gap: 10px; }

.thumb {
  position: relative;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  padding: 4px;
  transition: border-color .12s;
}
.thumb.current { border-color: var(--accent); box-shadow: 0 2px 8px rgba(232,102,60,.25); }
.thumb.dragover { border-color: var(--green); border-style: dashed; }
.thumb canvas { width: 100%; display: block; border-radius: 4px; }
.thumb .tnum {
  position: absolute; bottom: 4px; left: 6px;
  background: rgba(45,42,38,.75); color: #fff;
  font-size: 10.5px; padding: 1px 7px; border-radius: 8px;
}
.thumb .tacts {
  position: absolute; top: 4px; right: 4px;
  display: none; gap: 3px;
}
.thumb:hover .tacts { display: flex; }
.tacts button {
  border: none; background: rgba(45,42,38,.78); color: #fff;
  width: 24px; height: 24px; border-radius: 6px; cursor: pointer; font-size: 12px;
}
.tacts button:hover { background: var(--accent); }

.viewer {
  flex: 1;
  overflow: auto;
  position: relative;
  display: flex;
  justify-content: safe center;
  align-items: flex-start;
  padding: 24px;
}

.page-wrap {
  position: relative;
  box-shadow: 0 4px 24px rgba(80,60,40,.18);
  border-radius: 4px;
  background: #fff;
  margin: auto;
}
#pdfCanvas { display: block; border-radius: 4px; }
#overlayCanvas { position: absolute; inset: 0; }

.viewer.tool-pan #overlayCanvas { cursor: grab; }
.viewer.panning #overlayCanvas { cursor: grabbing; }
.viewer.tool-text #overlayCanvas { cursor: text; }
.viewer.tool-highlight #overlayCanvas,
.viewer.tool-whiteout #overlayCanvas,
.viewer.tool-ink #overlayCanvas { cursor: crosshair; }
.viewer.tool-signature #overlayCanvas,
.viewer.tool-image #overlayCanvas { cursor: copy; }

/* Entrada de texto flotante */
.float-text {
  position: absolute;
  border: 1.5px dashed var(--accent);
  background: rgba(255,255,255,.85);
  outline: none;
  font-family: Helvetica, Arial, sans-serif;
  padding: 0 2px;
  min-width: 60px;
  border-radius: 3px;
  z-index: 5;
}

/* ---------- Estado vacío ---------- */
.empty-state { margin: auto; }
.empty-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 48px 56px;
  text-align: center;
  max-width: 440px;
}
.empty-icon { font-size: 54px; margin-bottom: 10px; }
.empty-card h2 { margin-bottom: 8px; font-size: 22px; }
.empty-card p { color: var(--muted); margin-bottom: 20px; font-size: 14.5px; }
.empty-card .hint { margin-top: 18px; margin-bottom: 0; font-size: 12.5px; }

/* Arrastrar y soltar */
body.dragging::after {
  content: "Suelta el PDF para abrirlo 📄";
  position: fixed; inset: 0;
  background: rgba(232,102,60,.14);
  border: 3px dashed var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 600; color: var(--accent-dark);
  z-index: 100; pointer-events: none;
}

/* ---------- Modal ---------- */
.modal-back {
  position: fixed; inset: 0;
  background: rgba(45,42,38,.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal {
  background: var(--panel);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 40px rgba(0,0,0,.25);
}
.modal h3 { margin-bottom: 12px; }
.modal-note { font-size: 13px; color: var(--muted); margin-bottom: 14px; line-height: 1.5; max-width: 380px; }
.modal-row { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.modal-row input[type=range] { flex: 1; accent-color: var(--accent); }
.modal-wide { width: min(620px, 92vw); }
.ocr-text {
  width: 100%;
  height: 220px;
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel2);
  color: var(--ink);
  padding: 10px;
  font-size: 13px;
  font-family: Consolas, monospace;
  resize: vertical;
}
.ocr-progress { font-size: 13px; color: var(--muted); }
.ocr-lang { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.ocr-lang select {
  border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 8px; background: var(--panel); color: var(--ink); font-size: 13px;
}

/* Escaneo */
#scanVideo {
  width: 100%;
  max-height: 380px;
  border-radius: 10px;
  background: #000;
}
.scan-canvas-wrap {
  display: flex;
  justify-content: center;
  background: #1c1916;
  border-radius: 10px;
  padding: 8px;
}
#scanCanvas { max-width: 100%; cursor: crosshair; border-radius: 6px; }
.scan-filters { flex-wrap: wrap; }
.scan-f.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Barra flotante sobre la imagen seleccionada */
.sel-bar {
  position: absolute;
  display: flex;
  gap: 4px;
  background: #2d2a26;
  border-radius: 10px;
  padding: 4px 6px;
  box-shadow: 0 4px 14px rgba(0,0,0,.3);
  z-index: 6;
}
.sel-bar button {
  border: none; background: transparent; color: #fff;
  font-size: 15px; cursor: pointer; padding: 4px 8px; border-radius: 7px;
}
.sel-bar button:hover { background: var(--accent); }

/* Selección de imágenes insertadas */
.sel-hint {
  position: fixed; bottom: 60px; left: 50%; transform: translateX(-50%);
  background: rgba(45,42,38,.85); color: #fff;
  font-size: 12px; padding: 6px 14px; border-radius: 14px;
  pointer-events: none; z-index: 30;
}
#sigCanvas {
  border: 2px dashed var(--border);
  border-radius: 10px;
  background: #fffdf9;
  cursor: crosshair;
  touch-action: none;
}
.modal-actions { display: flex; gap: 8px; margin-top: 14px; }

/* ---------- Pie Casara ---------- */
.appfoot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--foot-bg);
  padding: 8px 16px;
  flex-shrink: 0;
}
.foot-logo { height: 30px; width: auto; display: block; }
.foot-text { color: #cbbfae; font-size: 12px; }
.foot-promo {
  color: #f2d9a7;
  font-size: 12px;
  text-decoration: none;
  border: 1px solid #4a4238;
  padding: 4px 12px;
  border-radius: 20px;
  transition: all .15s;
}
.foot-promo:hover { background: #3a332b; border-color: #f2d9a7; }
.empty-card .promo a { color: var(--accent); text-decoration: none; }

/* Marcas activas en botones de la barra */
.tool.flag-on { background: var(--green); color: #fff; }

/* ---------- Avisos ---------- */
.toasts {
  position: fixed; bottom: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 80;
}
.toast {
  background: var(--ink); color: #fff;
  padding: 11px 18px; border-radius: 12px;
  font-size: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  animation: toastIn .25s ease;
  max-width: 340px;
}
.toast.ok { background: var(--green); }
.toast.err { background: #c0392b; }
@keyframes toastIn { from { transform: translateY(12px); opacity: 0; } to { transform: none; opacity: 1; } }