/* ==========================================================================
   OmniTool - Tool Pages & Interactive Workspaces Styles
   Modern SaaS Workspaces, Dropzones, Canvas Previews & Diff Viewers
   ========================================================================== */

/* --- Tool Page Container & Header --- */
.tool-page-container {
  padding: 32px 0 64px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-subtle);
  margin-bottom: 24px;
}
.breadcrumbs a {
  color: var(--text-muted);
}
.breadcrumbs a:hover {
  color: var(--primary);
}
.breadcrumbs-separator {
  color: var(--border-hover);
  user-select: none;
}
.breadcrumbs-current {
  color: var(--text-main);
  font-weight: 600;
}

.tool-hero {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 32px;
}

.tool-hero-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 14px var(--primary-glow);
}
.tool-hero-icon svg {
  width: 32px;
  height: 32px;
}

.tool-hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.tool-hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.tool-privacy-banner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: var(--success-light);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--success);
  margin-top: 16px;
}
.tool-privacy-banner svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* --- Tool Main Workspace Card --- */
.tool-workspace {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 36px;
  margin-bottom: 40px;
  position: relative;
}

@media (max-width: 768px) {
  .tool-workspace {
    padding: 20px;
    border-radius: var(--radius-lg);
  }
}

/* --- Dropzones & File Uploaders --- */
.dropzone {
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  background: var(--bg-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}

.dropzone-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  color: var(--primary);
}

.dropzone-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.dropzone-hint {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* --- Form Controls & Inputs --- */
.tool-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 768px) {
  .tool-grid-2 {
    grid-template-columns: 1fr;
  }
}

.tool-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 768px) {
  .tool-grid-3 {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-subtle);
  font-weight: normal;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
  outline: none;
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
  font-family: var(--font-sans);
  line-height: 1.5;
}
textarea.code-font {
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* Range Sliders */
.slider-container {
  display: flex;
  align-items: center;
  gap: 14px;
}

input[type="range"] {
  flex-grow: 1;
  accent-color: var(--primary);
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--border-color);
  cursor: pointer;
}

.slider-value-badge {
  min-width: 48px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.88rem;
  text-align: center;
}

/* Toggles & Checkboxes */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

/* --- Action Bars --- */
.tool-action-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

/* --- Metrics Grid --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px;
  margin: 20px 0;
}

.metric-card {
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.metric-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* --- Results & Output Box --- */
.result-box {
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 24px;
}

.result-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.result-box-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.result-display-large {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 8px;
}

.result-detail-text {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Transparency Checkerboard */
.checkerboard {
  background-color: #fff;
  background-image: linear-gradient(45deg, #e2e8f0 25%, transparent 25%),
                    linear-gradient(-45deg, #e2e8f0 25%, transparent 25%),
                    linear-gradient(45deg, transparent 75%, #e2e8f0 75%),
                    linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

.preview-container {
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 380px;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin: 16px 0;
  position: relative;
}

.preview-container canvas, .preview-container img {
  max-width: 100%;
  max-height: 380px;
  object-fit: contain;
}

/* --- Diff Viewer --- */
.diff-viewer {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow-x: auto;
  background: var(--bg-card);
}

.diff-line {
  display: flex;
  padding: 4px 10px;
  white-space: pre-wrap;
  word-break: break-all;
}
.diff-line-number {
  width: 40px;
  color: var(--text-subtle);
  user-select: none;
  flex-shrink: 0;
}
.diff-added {
  background: rgba(16, 185, 129, 0.15);
  color: #059669;
}
.diff-removed {
  background: rgba(239, 68, 68, 0.15);
  color: #dc2626;
}

/* --- Color Picker Elements --- */
.color-preview-bar {
  width: 100%;
  height: 64px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
}

.color-palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.color-swatch-chip {
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: transform var(--transition-fast);
}
.color-swatch-chip:hover {
  transform: scale(1.08);
}

/* --- Educational Content & Guide Sections --- */
.tool-info-section {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.guide-steps-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 20px 0;
}

.guide-step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.guide-step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.guide-step-text h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.guide-step-text p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.tool-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.tool-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-muted);
  border-radius: var(--radius-md);
}

.tool-feature-icon {
  color: var(--success);
  flex-shrink: 0;
  margin-top: 2px;
}
.tool-feature-icon svg {
  width: 18px;
  height: 18px;
}

.tool-rich-text {
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.7;
  margin: 24px 0;
}
.tool-rich-text p {
  margin-bottom: 14px;
}
.tool-rich-text h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 20px 0 10px;
}

/* File list table for multi-files (e.g. merge PDF) */
.file-queue-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0;
}

.file-queue-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-muted);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
}

.file-queue-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-remove-btn {
  color: var(--danger);
  cursor: pointer;
  padding: 4px;
}
.file-remove-btn:hover {
  opacity: 0.8;
}