/* ==========================================================================
   Fijate Tools - Escáner de Documentos con Corrección de Perspectiva
   Estilos específicos de la herramienta
   ========================================================================== */

:root {
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Colores adaptables para tema claro */
  --bg-scanner-card: #ffffff;
  --bg-scanner-dropzone: #f8fafc;
  --bg-scanner-dropzone-hover: #f1f5f9;
  --border-scanner-subtle: #e2e8f0;
  --border-scanner-strong: #cbd5e1;
  --text-scanner-main: #0f172a;
  --text-scanner-muted: #475569;
  --accent-scanner: #2563eb;
  --accent-scanner-hover: #1d4ed8;
  --accent-scanner-light: #eff6ff;
  --success-scanner: #059669;
  --danger-scanner: #dc2626;
  --canvas-bg: #0b0f17;
  --modal-bg: #ffffff;
  --modal-overlay: rgba(15, 23, 42, 0.65);
}

[data-theme="dark"] {
  --bg-scanner-card: #131b2e;
  --bg-scanner-dropzone: #0d1424;
  --bg-scanner-dropzone-hover: #162137;
  --border-scanner-subtle: #26334d;
  --border-scanner-strong: #334466;
  --text-scanner-main: #f1f5f9;
  --text-scanner-muted: #94a3b8;
  --accent-scanner: #3b82f6;
  --accent-scanner-hover: #60a5fa;
  --accent-scanner-light: rgba(59, 130, 246, 0.15);
  --success-scanner: #10b981;
  --danger-scanner: #ef4444;
  --canvas-bg: #070a10;
  --modal-bg: #162035;
  --modal-overlay: rgba(3, 7, 18, 0.8);
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body, #f8fafc);
  color: var(--text-scanner-main);
  margin: 0;
  padding: 0;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

[data-theme="dark"] body {
  background-color: #0b1120;
}

/* Acotación de títulos para no contaminar cabecera institucional ni pie */
.tool-layout h1,
.tool-layout h2,
.tool-layout h3,
.tool-layout h4 {
  font-family: var(--font-heading);
  letter-spacing: -0.015em;
  color: var(--text-scanner-main);
  margin-top: 0;
}

.mono {
  font-family: var(--font-mono);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ==========================================================================
   Contenedor y tarjeta principal
   ========================================================================== */

.scanner-card {
  background: var(--bg-scanner-card);
  border: 1px solid var(--border-scanner-subtle);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
  margin-bottom: 2rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

@media (max-width: 640px) {
  .scanner-card {
    padding: 1rem;
    border-radius: 0.75rem;
  }
}

/* Badge de privacidad */
.privacy-badge {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  border-radius: 0.625rem;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--text-scanner-main);
  font-size: 0.875rem;
  line-height: 1.45;
  margin-bottom: 1.5rem;
}

.privacy-badge svg {
  flex-shrink: 0;
  color: var(--accent-scanner);
}

/* ==========================================================================
   Paso 1: Dropzone y subida
   ========================================================================== */

.upload-dropzone {
  border: 2px dashed var(--border-scanner-strong);
  background: var(--bg-scanner-dropzone);
  border-radius: 0.875rem;
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.upload-dropzone:hover,
.upload-dropzone.drag-active {
  border-color: var(--accent-scanner);
  background: var(--bg-scanner-dropzone-hover);
  transform: translateY(-2px);
}

.dropzone-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--accent-scanner-light);
  color: var(--accent-scanner);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.dropzone-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.dropzone-subtitle {
  color: var(--text-scanner-muted);
  font-size: 0.9375rem;
  margin-bottom: 1.75rem;
  max-width: 480px;
}

.dropzone-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  width: 100%;
}

@media (max-width: 640px) {
  .dropzone-actions {
    flex-direction: column;
  }
}

/* ==========================================================================
   Botones canónicos y controles
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-main);
  font-size: 0.9375rem;
  font-weight: 600;
  min-height: 42px;
  padding: 0.5rem 1.25rem;
  border-radius: 0.5rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  text-decoration: none;
  line-height: 1;
}

.btn:focus-visible {
  outline: 2px solid var(--accent-scanner);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--accent-scanner);
  color: #ffffff;
  border-color: var(--accent-scanner);
}

.btn-primary:hover {
  background: var(--accent-scanner-hover);
  border-color: var(--accent-scanner-hover);
}

.btn-secondary {
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent-scanner);
  border-color: rgba(37, 99, 235, 0.25);
}

.btn-secondary:hover {
  background: rgba(37, 99, 235, 0.18);
}

.btn-outline {
  background: transparent;
  color: var(--text-scanner-main);
  border-color: var(--border-scanner-strong);
}

.btn-outline:hover {
  background: var(--bg-scanner-dropzone-hover);
  border-color: var(--text-scanner-muted);
}

.btn-ghost {
  background: transparent;
  color: var(--text-scanner-muted);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--bg-scanner-dropzone-hover);
  color: var(--text-scanner-main);
}

.btn-sm {
  min-height: 36px;
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-lg {
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

@media (max-width: 640px) {
  .btn:not(.btn-sm) {
    width: 100%;
    min-height: 44px;
  }
}

/* ==========================================================================
   Toolbars de paso
   ========================================================================== */

.section-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--border-scanner-subtle);
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.step-indicator {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--text-scanner-main);
}

.toolbar-hint {
  font-size: 0.8125rem;
  color: var(--text-scanner-muted);
}

.toolbar-right {
  display: flex;
  gap: 0.5rem;
}

/* ==========================================================================
   Lienzo de corrección de perspectiva y Lupa de precisión
   ========================================================================== */

.canvas-viewport {
  position: relative;
  width: 100%;
  min-height: 400px;
  max-height: 70vh;
  background: var(--canvas-bg);
  border-radius: 0.75rem;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.4);
  touch-action: none; /* Crucial para drag táctil sin scroll de pantalla */
  cursor: crosshair;
}

#canvas-corners {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

/* Lupa flotante de ultra precisión */
.magnifier-glass {
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 3px solid #ffffff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6), 0 0 0 2px var(--accent-scanner);
  overflow: hidden;
  pointer-events: none;
  z-index: 50;
  transform: translate(-50%, -120%);
  background: #000;
}

#canvas-magnifier {
  display: block;
  width: 140px;
  height: 140px;
}

.magnifier-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.magnifier-crosshair::before,
.magnifier-crosshair::after {
  content: '';
  position: absolute;
  background: #ef4444;
}

.magnifier-crosshair::before {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.magnifier-crosshair::after {
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

/* Barra de control inferior de recorte */
.crop-control-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-scanner-subtle);
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1 1 280px;
}

.control-label {
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
}

/* Desplegables accesibles y responsivos */
.form-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  min-height: 40px;
  padding: 0.5rem 2.5rem 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-scanner-strong);
  background-color: var(--bg-scanner-dropzone);
  color: var(--text-scanner-main);
  font-family: var(--font-main);
  font-size: 0.875rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  cursor: pointer;
}

.form-select:focus {
  outline: 2px solid var(--accent-scanner);
  outline-offset: 1px;
}

.control-actions {
  display: flex;
  gap: 0.75rem;
}

@media (max-width: 640px) {
  .crop-control-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .control-group,
  .control-actions {
    width: 100%;
    flex-direction: column;
  }
}

/* ==========================================================================
   Paso 3: Selector de filtros de limpieza
   ========================================================================== */

.filter-selector-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 840px) {
  .filter-selector-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .filter-selector-grid {
    grid-template-columns: 1fr;
  }
}

.filter-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem;
  border-radius: 0.625rem;
  border: 1px solid var(--border-scanner-subtle);
  background: var(--bg-scanner-dropzone);
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  font-family: var(--font-main);
  color: var(--text-scanner-main);
  min-height: 48px;
}

.filter-card:hover {
  border-color: var(--accent-scanner);
  background: var(--bg-scanner-dropzone-hover);
}

.filter-card.active {
  border-color: var(--accent-scanner);
  background: var(--accent-scanner-light);
  box-shadow: 0 0 0 1px var(--accent-scanner);
}

.filter-icon-box {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 0.5rem;
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent-scanner);
  display: flex;
  align-items: center;
  justify-content: center;
}

.filter-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.filter-title {
  font-size: 0.875rem;
  font-weight: 700;
}

.filter-desc {
  font-size: 0.75rem;
  color: var(--text-scanner-muted);
  line-height: 1.35;
}

/* Deslizadores de ajuste fino */
.slider-controls-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  background: var(--bg-scanner-dropzone);
  border: 1px solid var(--border-scanner-subtle);
  border-radius: 0.625rem;
  padding: 0.875rem 1rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 640px) {
  .slider-controls-panel {
    grid-template-columns: 1fr;
  }
}

.slider-control-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-scanner-main);
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-scanner);
  font-weight: 600;
}

.form-range {
  width: 100%;
  accent-color: var(--accent-scanner);
  cursor: pointer;
  height: 6px;
}

/* Vista previa de resultado */
.preview-container {
  width: 100%;
  min-height: 420px;
  max-height: 75vh;
  background: var(--canvas-bg);
  border-radius: 0.75rem;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.4);
}

#canvas-result {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  background: #ffffff;
}

/* ==========================================================================
   Bandeja multipágina
   ========================================================================== */

.multipage-bar {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-scanner-subtle);
}

.multipage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.875rem;
}

.multipage-title-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.multipage-title {
  font-size: 0.9375rem;
}

.pages-thumbnails-track {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.5rem 0.25rem 0.75rem;
  scrollbar-width: thin;
}

.page-thumb-card {
  position: relative;
  flex: 0 0 110px;
  height: 145px;
  border-radius: 0.5rem;
  border: 2px solid var(--border-scanner-subtle);
  background: #000;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
}

.page-thumb-card:hover {
  border-color: var(--accent-scanner);
}

.page-thumb-card.active {
  border-color: var(--accent-scanner);
  box-shadow: 0 0 0 2px var(--accent-scanner);
}

.page-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #ffffff;
}

.page-thumb-number {
  position: absolute;
  top: 4px;
  left: 4px;
  background: rgba(15, 23, 42, 0.8);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.page-thumb-delete {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(220, 38, 38, 0.85);
  color: #fff;
  border: none;
  border-radius: 4px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.page-thumb-delete:hover {
  background: #dc2626;
}

/* Barra de acciones de exportación */
.export-actions-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-scanner-subtle);
  flex-wrap: wrap;
}

.export-main-col {
  flex: 1 1 260px;
}

.export-secondary-col {
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .export-actions-card {
    flex-direction: column;
    align-items: stretch;
  }
  .export-secondary-col {
    flex-direction: column;
  }
}

/* ==========================================================================
   Modal accesible de avisos y notificaciones
   ========================================================================== */

.feedback-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.feedback-modal-dialog {
  background: var(--modal-bg);
  color: var(--text-scanner-main);
  border: 1px solid var(--border-scanner-subtle);
  border-radius: 1rem;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  animation: modalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.feedback-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-scanner-subtle);
}

.feedback-modal-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0;
}

.feedback-modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-scanner-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
}

.feedback-modal-close:hover {
  color: var(--text-scanner-main);
  background: var(--bg-scanner-dropzone-hover);
}

.feedback-modal-body {
  padding: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--text-scanner-muted);
}

.feedback-modal-footer {
  display: flex;
  justify-content: flex-end;
  padding: 0.875rem 1.25rem;
  border-top: 1px solid var(--border-scanner-subtle);
  background: var(--bg-scanner-dropzone);
}