/**
 * ToolFlux Lab - Tool Workspace Design System
 * 
 * Dedicated, distraction-free calculation engine & result presentation hub.
 */

.tool-workspace-page {
  padding-block: var(--space-8) var(--space-16);
}

.tool-header-block {
  margin-bottom: var(--space-6);
}

.tool-header-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.tool-header-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .tool-header-title {
    font-size: var(--text-4xl);
  }
}

.tool-header-desc {
  font-size: var(--text-base);
  color: var(--text-muted);
  max-width: 720px;
}

/* =========================================================
   WORKSPACE CARD (Application Core)
========================================================= */
.workspace-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  margin-bottom: var(--space-12);
  position: relative;
}

@media (min-width: 768px) {
  .workspace-card {
    padding: var(--space-8);
  }
}

/* Two-column layout on Desktop */
.workspace-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .workspace-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: var(--space-10);
  }
}

/* Workspace Inputs Panel */
.workspace-inputs-panel {
  display: flex;
  flex-direction: column;
}

.workspace-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* Workspace Results Hub (Visual Focus & High WCAG Contrast) */
.workspace-results-hub {
  background: var(--surface-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  transition: all var(--transition-fast);
}

.results-hub-header,
.result-hero-display {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.results-hub-label,
.result-hero-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.results-main-display {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.result-hero-value,
.result-hero-val {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-result);
  line-height: 1.15;
  letter-spacing: -0.02em;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
  display: block;
}

@media (min-width: 768px) {
  .result-hero-value,
  .result-hero-val {
    font-size: var(--text-5xl);
  }
}

.result-explanation-text,
.result-explanation {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: var(--space-1);
}

/* Secondary Result Statistics */
.result-sub-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
}

.result-sub-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.sub-stat-label,
.breakdown-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
}

.sub-stat-val,
.breakdown-value {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-result-secondary);
  font-variant-numeric: tabular-nums;
}

.sub-stat-val.text-danger {
  color: var(--danger) !important;
}

.sub-stat-val.text-success {
  color: var(--success) !important;
}

/* Visual Progress / Proportion Bar */
.visual-bar-wrap {
  margin-top: var(--space-2);
}

.visual-bar-header {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
  font-variant-numeric: tabular-nums;
}

.visual-bar-header strong {
  color: var(--text-primary);
}

.visual-bar-track {
  width: 100%;
  height: 10px;
  background: var(--border-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
}

.visual-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width var(--transition-normal);
}

/* Result Breakdown List */
.result-breakdown-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-3);
}

.breakdown-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
}

/* Copy Toast */
.copy-toast,
.copy-feedback-toast {
  position: absolute;
  top: -12px;
  inset-inline-end: 16px;
  background: var(--success);
  color: #FFFFFF;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  z-index: 10;
}

.copy-toast.show,
.copy-feedback-toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   TOOL CONTENT & EDUCATIONAL FOUNDATION
========================================================= */
.tool-content-section {
  max-width: 800px;
  width: 100%;
  margin-bottom: var(--space-12);
  min-width: 0;
  box-sizing: border-box;
}

.tool-article {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.tool-prose {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow-wrap: break-word;
  word-break: break-word;
}

.tool-prose h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--text-main);
  word-break: break-word;
  overflow-wrap: break-word;
}

.tool-prose p {
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
  line-height: 1.7;
  word-break: break-word;
  overflow-wrap: break-word;
}

.formula-box {
  background: var(--surface-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: var(--text-sm);
  color: var(--accent);
  margin-block: var(--space-3);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
  box-sizing: border-box;
  word-break: break-word;
  overflow-wrap: break-word;
}

.tool-guide-section code,
.tool-prose code,
.formula-box code {
  background: var(--surface-hover);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  word-break: break-all;
  overflow-wrap: break-word;
  max-width: 100%;
}

pre,
.tool-guide-section pre,
.card pre {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-sizing: border-box;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: var(--text-xs);
  line-height: 1.5;
  background: var(--surface-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-2) 0;
}

.tool-guide-section strong,
.tool-prose strong {
  color: var(--text-primary);
  word-break: break-word;
}

/* Examples Table */
.examples-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin-block: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.examples-table {
  width: 100%;
  text-align: start;
  font-size: var(--text-sm);
  border-collapse: collapse;
}

.examples-table th {
  background: var(--surface-secondary);
  padding: var(--space-3) var(--space-4);
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.examples-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.examples-table tr:last-child td {
  border-bottom: none;
}

@media (max-width: 640px) {
  .tool-workspace-page {
    padding-block: var(--space-4) var(--space-10);
  }
  .workspace-card {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }
  .tool-content-section .card {
    padding: var(--space-4) !important;
  }
  .workspace-inputs-panel,
  .workspace-results-panel {
    min-width: 0;
    max-width: 100%;
  }
}