/* ======================================================================
   CSS for Grayscale PDF Tool
   Same design spirit as other PDF tools (blue accent, clean, modern)
   ====================================================================== */

.tool-wrapper[data-tool="grayscale-pdf"] {
  font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: #1e293b;
}

/* -------- Error & Loading -------- */
.tool-wrapper[data-tool="grayscale-pdf"] .error-message {
  display: none;
  background: #fef2f2;
  border-left: 4px solid #dc2626;
  padding: 1rem 1.25rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
  color: #991b1b;
  font-size: 0.95rem;
  font-weight: 500;
}

.tool-wrapper[data-tool="grayscale-pdf"] .loading-indicator {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 0.75rem;
  padding: 1rem 1.5rem;
  margin: 1rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #0369a1;
  font-weight: 500;
}

.tool-wrapper[data-tool="grayscale-pdf"] .loading-indicator i {
  font-size: 1.25rem;
}

/* -------- Controls -------- */
.tool-wrapper[data-tool="grayscale-pdf"] .controls {
  background: #ffffff;
  border-radius: 1rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #e9edf2;
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
}

.tool-wrapper[data-tool="grayscale-pdf"] .control-group {
  flex: 1 1 200px;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.tool-wrapper[data-tool="grayscale-pdf"] .control-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: #1e293b;
}

.tool-wrapper[data-tool="grayscale-pdf"] .control-group select {
  padding: 0.5rem 0.75rem;
  border: 1px solid #d1d9e6;
  border-radius: 0.5rem;
  background: #fff;
  font-size: 0.9rem;
  color: #1e293b;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.tool-wrapper[data-tool="grayscale-pdf"] .control-group select:focus {
  border-color: #0067b8;
  box-shadow: 0 0 0 3px rgba(0, 103, 184, 0.12);
}

.tool-wrapper[data-tool="grayscale-pdf"] .control-group input[type="range"] {
  width: 100%;
  margin: 0.2rem 0;
  accent-color: #0067b8;
  cursor: pointer;
}

.tool-wrapper[data-tool="grayscale-pdf"] .range-value {
  font-weight: 600;
  color: #0067b8;
  background: #f0f7ff;
  padding: 0.1rem 0.6rem;
  border-radius: 1rem;
  font-size: 0.8rem;
  margin-left: 0.3rem;
}

/* -------- Action Buttons -------- */
.tool-wrapper[data-tool="grayscale-pdf"] .action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn {
  padding: 0.6rem 1.8rem;
  border-radius: 2rem;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn:active {
  transform: scale(0.97);
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-primary {
  background: #0067b8;
  color: #ffffff;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-primary:hover:not(:disabled) {
  background: #005499;
  box-shadow: 0 4px 12px rgba(0, 103, 184, 0.25);
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-secondary {
  background: #f1f5f9;
  color: #1e293b;
  border: 1px solid #d1d9e6;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-secondary:hover {
  background: #e2e8f0;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-success {
  background: #0b7e3d;
  color: #ffffff;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-success:hover:not(:disabled) {
  background: #096633;
  box-shadow: 0 4px 12px rgba(11, 126, 61, 0.25);
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-success:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* -------- Preview Section (2 columns) -------- */
.tool-wrapper[data-tool="grayscale-pdf"] .preview-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.tool-wrapper[data-tool="grayscale-pdf"] .preview-column {
  background: #ffffff;
  border-radius: 1rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #e9edf2;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tool-wrapper[data-tool="grayscale-pdf"] .preview-title {
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-wrapper[data-tool="grayscale-pdf"] .preview-title i {
  color: #0067b8;
}

.tool-wrapper[data-tool="grayscale-pdf"] .page-info {
  font-size: 0.85rem;
  color: #64748b;
  margin-bottom: 0.5rem;
}

.tool-wrapper[data-tool="grayscale-pdf"] .page-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-icon {
  background: #f1f5f9;
  border: 1px solid #d1d9e6;
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
  color: #1e293b;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-icon:hover:not(:disabled) {
  background: #e2e8f0;
}

.tool-wrapper[data-tool="grayscale-pdf"] .btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---- Canvas Container (معاينة الصفحة بالكامل وأصغر) ---- */
.tool-wrapper[data-tool="grayscale-pdf"] .canvas-container {
  width: 100%;
  border-radius: 0.5rem;
  overflow: auto;
  background: #f8fafc;
  border: 1px solid #e9edf2;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 150px;
  max-height: 420px;  /* تم تقليل الارتفاع لتكون المعاينة أصغر */
  padding: 6px;
}

.tool-wrapper[data-tool="grayscale-pdf"] .canvas-container canvas {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  display: block;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  background: #ffffff;
}

/* -------- Progress Bar -------- */
.tool-wrapper[data-tool="grayscale-pdf"] .progress-container {
  background: #e9edf2;
  border-radius: 2rem;
  height: 24px;
  margin: 1.5rem 0;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.tool-wrapper[data-tool="grayscale-pdf"] .progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #0067b8, #3b8fd9);
  border-radius: 2rem;
  transition: width 0.4s ease;
}

.tool-wrapper[data-tool="grayscale-pdf"] .progress-text {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: #0f172a;
  letter-spacing: 0.3px;
}

/* -------- Success Message -------- */
.tool-wrapper[data-tool="grayscale-pdf"] .success-message {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 0.75rem;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #065f46;
  font-weight: 500;
}

.tool-wrapper[data-tool="grayscale-pdf"] .success-message i {
  color: #0b7e3d;
  font-size: 1.5rem;
}

/* -------- Responsive -------- */
@media (max-width: 900px) {
  .tool-wrapper[data-tool="grayscale-pdf"] .preview-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .tool-wrapper[data-tool="grayscale-pdf"] .canvas-container {
    max-height: 350px; /* أصغر على الشاشات المتوسطة */
  }
}

@media (max-width: 600px) {
  .tool-wrapper[data-tool="grayscale-pdf"] .controls {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 1.25rem;
  }

  .tool-wrapper[data-tool="grayscale-pdf"] .control-group {
    flex: 1 1 auto;
    min-width: unset;
  }

  .tool-wrapper[data-tool="grayscale-pdf"] .action-buttons {
    flex-direction: column;
  }

  .tool-wrapper[data-tool="grayscale-pdf"] .action-buttons .btn {
    justify-content: center;
  }

  .tool-wrapper[data-tool="grayscale-pdf"] .preview-column {
    padding: 0.75rem;
  }

  .tool-wrapper[data-tool="grayscale-pdf"] .canvas-container {
    min-height: 120px;
    max-height: 280px; /* أصغر على الموبايل */
  }
}