/* 
  Tech Simpld - Interactive Tools Stylesheet
  Aesthetic: Deep Charcoal/Slate (#0f172a), Dark Slate Cards (#1e293b), Subtle Borders (#334155), Tech-Yellow (#facc15)
  Pure client-side responsive layout with zero external framework dependencies.
*/

:root {
  /* Tech Simpld Tools Theme Tokens */
  --tools-bg-canvas: #0f172a;
  --tools-card-bg: #1e293b;
  --tools-card-bg-elevated: #243248;
  --tools-card-inner: #152033;
  --tools-border: #334155;
  --tools-border-focus: #475569;
  --tools-border-active: #facc15;
  
  --tools-yellow: #facc15;
  --tools-yellow-hover: #eab308;
  --tools-yellow-glow: rgba(250, 204, 21, 0.2);
  --tools-yellow-dark: #854d0e;
  --tools-yellow-subtle: rgba(250, 204, 21, 0.1);
  
  --tools-text-primary: #f8fafc;
  --tools-text-secondary: #cbd5e1;
  --tools-text-muted: #94a3b8;
  --tools-text-dark: #0f172a;
  
  --tools-accent-cyan: #38bdf8;
  --tools-accent-green: #4ade80;
  --tools-accent-purple: #a855f7;
  
  --tools-radius-sm: 6px;
  --tools-radius-md: 10px;
  --tools-radius-lg: 16px;
  
  --tools-code-bg: #0b1120;
  --tools-code-border: #1e293b;
}

/* Page Scaffolding */
.tools-page {
  background-color: var(--tools-bg-canvas);
  color: var(--tools-text-primary);
  min-height: calc(100vh - 160px);
  padding-bottom: 4rem;
}

.tools-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Compact Workspace Header */
.tools-hero {
  padding: 1.75rem 0 1.25rem;
  border-bottom: 1px solid var(--tools-border);
  margin-bottom: 1.5rem;
}

.tools-hero-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.tools-title {
  font-family: var(--font-title, 'Outfit', sans-serif);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--tools-text-primary);
  line-height: 1.15;
  margin-bottom: 0.35rem;
}

.tools-title span {
  color: var(--tools-yellow);
  background: linear-gradient(135deg, #facc15 0%, #fbbf24 60%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tools-subtitle {
  font-size: 0.975rem;
  color: var(--tools-text-secondary);
  max-width: 680px;
  margin: 0;
  line-height: 1.5;
}

.tools-count-meta {
  font-family: 'Consolas', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--tools-yellow);
  background-color: var(--tools-yellow-subtle);
  border: 1px solid rgba(250, 204, 21, 0.35);
  border-radius: var(--tools-radius-sm);
  padding: 0.4rem 0.75rem;
  white-space: nowrap;
}

/* App-Style Two-Column Workspace */
.tools-workspace-shell {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
}

.tools-sidebar-rail {
  position: sticky;
  top: 5.5rem;
  background-color: var(--tools-card-bg);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-lg);
  padding: 1rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.sidebar-rail-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Sidebar Search / Filter Input */
.sidebar-search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.sidebar-search-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--tools-text-muted);
  pointer-events: none;
}

.sidebar-search-input {
  width: 100%;
  min-height: 44px;
  padding: 0.55rem 2.2rem 0.55rem 2.25rem;
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-sm);
  color: var(--tools-text-primary);
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.875rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sidebar-search-input::placeholder {
  color: var(--tools-text-muted);
}

.sidebar-search-input:focus {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
  border-color: var(--tools-yellow);
  box-shadow: 0 0 0 3px var(--tools-yellow-subtle);
}

.sidebar-search-kbd {
  position: absolute;
  right: 0.6rem;
  font-family: 'Consolas', monospace;
  font-size: 0.725rem;
  color: var(--tools-text-muted);
  background-color: var(--tools-card-bg);
  border: 1px solid var(--tools-border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  pointer-events: none;
}

.sidebar-search-input:focus + .sidebar-search-kbd {
  display: none;
}

/* Sidebar Category Groups & Tool Buttons */
.tools-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.sidebar-nav-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.sidebar-nav-group[hidden],
.tool-tab-btn[hidden],
.sidebar-empty-state[hidden] {
  display: none !important;
}

.sidebar-group-heading {
  font-size: 0.725rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--tools-text-muted);
  padding: 0 0.5rem 0.25rem;
}

.tool-tab-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 48px;
  padding: 0.6rem 0.75rem;
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: var(--tools-radius-sm);
  color: var(--tools-text-secondary);
  font-family: var(--font-body, 'Inter', sans-serif);
  text-align: left;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.tool-tab-btn:hover {
  background-color: var(--tools-card-bg-elevated);
  border-color: var(--tools-border);
  color: var(--tools-text-primary);
}

.tool-tab-btn:focus-visible {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
}

.tool-tab-btn.active {
  background-color: var(--tools-card-inner);
  border-color: var(--tools-yellow);
  color: var(--tools-text-primary);
}

.tool-tab-btn svg {
  flex-shrink: 0;
  stroke: var(--tools-text-muted);
  transition: stroke 0.15s ease;
}

.tool-tab-btn:hover svg {
  stroke: var(--tools-text-primary);
}

.tool-tab-btn.active svg {
  stroke: var(--tools-yellow);
}

.nav-item-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.nav-item-title {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.25;
  color: inherit;
}

.tool-tab-btn.active .nav-item-title {
  color: var(--tools-yellow);
}

.nav-item-sub {
  font-size: 0.75rem;
  color: var(--tools-text-muted);
  line-height: 1.25;
  margin-top: 0.1rem;
}

/* Sidebar Empty Filter State */
.sidebar-empty-state {
  text-align: center;
  padding: 1.25rem 0.75rem;
  background-color: var(--tools-card-inner);
  border: 1px dashed var(--tools-border);
  border-radius: var(--tools-radius-sm);
}

.sidebar-empty-text {
  font-size: 0.85rem;
  color: var(--tools-text-secondary);
  margin-bottom: 0.75rem;
}

/* Mobile Sticky Switcher Bar */
.mobile-tool-switcher {
  display: none;
}

.tools-workspace-canvas {
  min-width: 0;
}

@media (max-width: 960px) {
  .tools-workspace-shell {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .mobile-tool-switcher {
    display: block;
    position: sticky;
    top: 4.5rem;
    z-index: 40;
    margin-bottom: 1rem;
  }

  .mobile-switcher-trigger {
    width: 100%;
    min-height: 48px;
    padding: 0.75rem 1rem;
    background-color: var(--tools-card-bg);
    border: 1px solid var(--tools-yellow);
    border-radius: var(--tools-radius-md);
    color: var(--tools-text-primary);
    font-family: var(--font-body, 'Inter', sans-serif);
    font-size: 0.925rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
  }

  .mobile-switcher-label {
    font-size: 0.8rem;
    color: var(--tools-text-muted);
    font-weight: 500;
  }

  .mobile-switcher-current {
    color: var(--tools-yellow);
    font-weight: 700;
    margin-right: auto;
    text-align: left;
  }

  .mobile-switcher-chevron {
    color: var(--tools-yellow);
    transition: transform 0.2s ease;
    flex-shrink: 0;
  }

  .mobile-switcher-trigger[aria-expanded="true"] .mobile-switcher-chevron {
    transform: rotate(180deg);
  }

  .tools-sidebar-rail {
    display: none;
    position: static;
    margin-bottom: 0.5rem;
  }

  .tools-sidebar-rail.mobile-open {
    display: block;
  }

  .tools-sidebar-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
  }
}

@media (max-width: 600px) {
  .tools-hero {
    padding: 1.25rem 0 1rem;
  }

  .tools-sidebar-nav {
    grid-template-columns: 1fr;
  }

  .tool-card {
    padding: 1.25rem;
  }
}

/* Tool Sections Container */
.tool-section {
  display: none;
  animation: fadeIn 0.25s ease-in-out;
}

.tool-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}



/* Common Card & Form Styles */
.tool-card {
  background-color: var(--tools-card-bg);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.tool-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid var(--tools-border);
  padding-bottom: 1.25rem;
}

.tool-card-title {
  font-family: var(--font-title, 'Outfit', sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--tools-text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tool-card-title svg {
  color: var(--tools-yellow);
}

.tool-card-desc {
  font-size: 0.925rem;
  color: var(--tools-text-muted);
  margin-top: 0.25rem;
}

/* Form Controls */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--tools-text-secondary);
  margin-bottom: 0.4rem;
}

.form-label .required {
  color: var(--tools-yellow);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-sm);
  color: var(--tools-text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
  border-color: var(--tools-yellow);
  box-shadow: 0 0 0 3px var(--tools-yellow-subtle);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #64748b;
}

.form-hint {
  font-size: 0.775rem;
  color: var(--tools-text-muted);
  margin-top: 0.35rem;
}

/* Buttons */
.tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.65rem 1.2rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--tools-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
  line-height: 1.2;
}

.tool-btn-primary {
  background-color: var(--tools-yellow);
  color: var(--tools-text-dark);
}

.tool-btn-primary:hover {
  background-color: var(--tools-yellow-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--tools-yellow-glow);
}

.tool-btn-secondary {
  background-color: var(--tools-card-bg-elevated);
  border: 1px solid var(--tools-border);
  color: var(--tools-text-primary);
}

.tool-btn-secondary:hover {
  background-color: #334155;
  border-color: var(--tools-border-focus);
}

.tool-btn-ghost {
  background: transparent;
  color: var(--tools-text-secondary);
  border: 1px solid transparent;
}

.tool-btn-ghost:hover {
  background-color: rgba(51, 65, 85, 0.4);
  color: var(--tools-text-primary);
}

.tool-btn-sm {
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  font-size: 0.825rem;
}

/* Tool 1: Docker Compose Generator */
.docker-grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

@media (max-width: 1120px) {
  .docker-grid-layout {
    grid-template-columns: 1fr;
  }
}

/* App Selection Cards Grid */
.app-selection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.app-card {
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  padding: 0.85rem 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  user-select: none;
}

.app-card:hover {
  border-color: var(--tools-border-focus);
  background-color: rgba(30, 41, 59, 0.8);
}

.app-card.selected {
  border-color: var(--tools-yellow);
  background-color: rgba(250, 204, 21, 0.08);
}

.app-card input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid #64748b;
  border-radius: 4px;
  margin-top: 2px;
  flex-shrink: 0;
  display: grid;
  place-content: center;
  cursor: pointer;
  background-color: var(--tools-card-bg);
  transition: all 0.15s ease;
}

.app-card input[type="checkbox"]:checked {
  background-color: var(--tools-yellow);
  border-color: var(--tools-yellow);
}

.app-card input[type="checkbox"]:checked::before {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--tools-text-dark);
  border-bottom: 2px solid var(--tools-text-dark);
  transform: rotate(-45deg) translate(1px, -1px);
}

.app-card-info {
  display: flex;
  flex-direction: column;
}

.app-card-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--tools-text-primary);
}

.app-card.selected .app-card-name {
  color: var(--tools-yellow);
}

.app-card-category {
  font-size: 0.725rem;
  color: var(--tools-text-muted);
}

.app-card-ports {
  font-size: 0.725rem;
  color: var(--tools-accent-cyan);
  margin-top: 0.2rem;
  font-family: monospace;
}

/* Global Config Fieldset */
.config-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

/* Service Config Accordion */
.service-config-item {
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.service-config-header {
  padding: 0.85rem 1.15rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background-color: rgba(30, 41, 59, 0.4);
  font-weight: 600;
  font-size: 0.9rem;
}

.service-config-header:hover {
  background-color: rgba(30, 41, 59, 0.8);
}

.service-config-body {
  padding: 1.15rem;
  border-top: 1px solid var(--tools-border);
  display: none;
}

.service-config-item.open .service-config-body {
  display: block;
}

/* Code Preview Box */
.code-preview-container {
  background-color: var(--tools-code-bg);
  border: 1px solid var(--tools-code-border);
  border-radius: var(--tools-radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.code-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 1rem;
  background-color: #090e1a;
  border-bottom: 1px solid var(--tools-border);
}

.code-tabs {
  display: flex;
  gap: 0.5rem;
}

.code-tab-btn {
  min-height: 44px;
  background: transparent;
  border: none;
  color: var(--tools-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.code-tab-btn.active {
  background-color: var(--tools-card-bg);
  color: var(--tools-yellow);
}

.code-preview-actions {
  display: flex;
  gap: 0.5rem;
}

.code-editor-area {
  position: relative;
  flex-grow: 1;
  min-height: 480px;
  max-height: 700px;
  overflow: auto;
}

.code-pre {
  margin: 0;
  padding: 1.25rem;
  font-family: 'Consolas', 'Fira Code', 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #e2e8f0;
  tab-size: 2;
  white-space: pre;
}

/* Tool 2: Markdown & Frontmatter Formatter */
.formatter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .formatter-grid {
    grid-template-columns: 1fr;
  }
}

.formatter-pane {
  display: flex;
  flex-direction: column;
}

.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pane-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--tools-text-secondary);
}

.formatter-textarea {
  min-height: 420px;
  resize: vertical;
  font-family: 'Consolas', 'Fira Code', monospace;
  font-size: 0.875rem;
  line-height: 1.5;
  background-color: var(--tools-code-bg);
  border: 1px solid var(--tools-border);
}

.sample-btns-bar {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.format-controls-bar {
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.format-stat-badge {
  font-size: 0.775rem;
  color: var(--tools-text-muted);
  background-color: rgba(15, 23, 42, 0.6);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--tools-border);
}

/* Tool 3: Subnet & IP Calculator */
.calculator-input-card {
  margin-bottom: 2rem;
}

.ip-input-row {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1fr;
  gap: 1rem;
  align-items: end;
}

@media (max-width: 768px) {
  .ip-input-row {
    grid-template-columns: 1fr;
  }
}

.subnet-presets-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.preset-chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: 9999px;
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
  color: var(--tools-text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: monospace;
}

.preset-chip:hover,
.preset-chip.active {
  border-color: var(--tools-yellow);
  color: var(--tools-yellow);
  background-color: var(--tools-yellow-subtle);
}

/* Subnet Results Metric Grid */
.results-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.metric-card,
.result-metric-card {
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  padding: 1.15rem;
  transition: border-color 0.2s ease;
}

.metric-card:hover,
.result-metric-card:hover {
  border-color: var(--tools-border-focus);
}

.metric-card.highlight {
  border-color: rgba(250, 204, 21, 0.4);
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.8) 0%, rgba(21, 32, 51, 0.9) 100%);
}

.metric-label {
  font-size: 0.775rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tools-text-muted);
  margin-bottom: 0.35rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.metric-value {
  font-family: 'Consolas', monospace;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--tools-text-primary);
  word-break: break-all;
}

.metric-value.yellow,
.metric-value.highlight {
  color: var(--tools-yellow);
}

.metric-subtext {
  font-size: 0.775rem;
  color: var(--tools-text-muted);
  margin-top: 0.3rem;
}

.metric-value.cyan {
  color: var(--tools-accent-cyan);
}

.metric-binary {
  font-family: 'Consolas', monospace;
  font-size: 0.75rem;
  color: var(--tools-text-muted);
  margin-top: 0.35rem;
  letter-spacing: 0.05em;
}

/* Homelab IP Allocation Visualizer */
.allocation-visualizer {
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.alloc-bar-container {
  height: 28px;
  background-color: #0b1120;
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  margin: 1rem 0;
  border: 1px solid var(--tools-border);
}

.alloc-segment {
  height: 100%;
  transition: width 0.3s ease;
  position: relative;
  cursor: pointer;
}

.alloc-segment:hover {
  filter: brightness(1.2);
}

.alloc-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.75rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.825rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Subnet Division Table */
.subnet-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  margin-top: 1rem;
}

.subnet-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.subnet-table th {
  background-color: #0b1120;
  padding: 0.75rem 1rem;
  color: var(--tools-text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--tools-border);
}

.subnet-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
  font-family: monospace;
  color: var(--tools-text-secondary);
}

.subnet-table tr:hover td {
  background-color: rgba(30, 41, 59, 0.5);
  color: var(--tools-text-primary);
}

/* Toast Notification for Clipboard Copy */
.tools-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--tools-yellow);
  color: var(--tools-text-dark);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--tools-radius-sm);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.tools-toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Accessibility & High Contrast Focus */
:focus-visible {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
}

/* Accordion Guides */
.tool-guide-accordion {
  background-color: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-md);
  margin-bottom: 1.75rem;
  overflow: hidden;
  transition: all 0.2s ease;
}

.tool-guide-accordion[open] {
  border-color: rgba(250, 204, 21, 0.4);
  background-color: rgba(21, 32, 51, 0.7);
}

.tool-guide-summary {
  padding: 0.85rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--tools-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  user-select: none;
  list-style: none;
}

.tool-guide-summary:focus-visible {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
}

.tool-guide-summary::-webkit-details-marker {
  display: none;
}

.tool-guide-summary:hover {
  color: var(--tools-text-primary);
  background-color: rgba(30, 41, 59, 0.4);
}

.guide-icon {
  font-size: 1.1rem;
}

.guide-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background-color: var(--tools-yellow-subtle);
  color: var(--tools-yellow);
  margin-left: 0.25rem;
}

.guide-toggle-icon {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--tools-text-muted);
  transition: transform 0.2s ease;
}

.tool-guide-accordion[open] .guide-toggle-icon {
  transform: rotate(180deg);
  color: var(--tools-yellow);
}

.tool-guide-body {
  padding: 1.25rem;
  border-top: 1px solid var(--tools-border);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--tools-text-secondary);
}

.tool-guide-body h4 {
  font-size: 0.95rem;
  color: var(--tools-text-primary);
  margin: 0.75rem 0 0.35rem;
}

.tool-guide-body h4:first-child {
  margin-top: 0;
}

.tool-guide-body ul, .tool-guide-body ol {
  margin-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.tool-guide-body li {
  margin-bottom: 0.25rem;
}

.tool-guide-body code {
  background-color: #0b1120;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  color: var(--tools-yellow);
  font-family: monospace;
  font-size: 0.825rem;
}

/* Tool 4 & 5: Form Controls, Sliders & Meters */
.range-slider-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tool-range-slider {
  flex-grow: 1;
  appearance: none;
  -webkit-appearance: none;
  height: 6px;
  background: #334155;
  border-radius: 3px;
  cursor: pointer;
}

.tool-range-slider:focus-visible {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 4px;
}

.tool-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--tools-yellow);
  cursor: pointer;
  box-shadow: 0 0 10px var(--tools-yellow-glow);
  transition: transform 0.1s ease;
}

.tool-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.range-number-display {
  font-family: monospace;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--tools-yellow);
  min-width: 60px;
  text-align: right;
}

/* Allocation Progress Meter */
.meter-wrapper {
  margin-bottom: 1.25rem;
}

.meter-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.meter-track {
  height: 12px;
  background-color: #0b1120;
  border: 1px solid var(--tools-border);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.meter-bar {
  height: 100%;
  background-color: var(--tools-accent-cyan);
  border-radius: 5px;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.meter-bar.warning {
  background-color: #f59e0b;
}

.meter-bar.danger {
  background-color: #ef4444;
}

.meter-bar.safe {
  background-color: #4ade80;
}

/* Status Pills */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.status-pill.safe {
  background-color: rgba(74, 222, 128, 0.15);
  border: 1px solid rgba(74, 222, 128, 0.4);
  color: #4ade80;
}

.status-pill.warning {
  background-color: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #f59e0b;
}

.status-pill.danger {
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #ef4444;
}

/* Payoff Comparison Card */
.tco-comparison-card {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.9) 0%, rgba(21, 32, 51, 0.95) 100%);
  border: 1px solid rgba(250, 204, 21, 0.35);
  border-radius: var(--tools-radius-md);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.tco-savings-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--tools-yellow);
  font-family: var(--font-title, 'Outfit', sans-serif);
}

/* Proxmox Workload List & Cards */
.proxmox-meters-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1rem;
}

@media (max-width: 680px) {
  .proxmox-meters-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

.proxmox-workloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

.workload-card {
  background-color: var(--tools-card-inner);
  border: 1px solid var(--tools-border);
  border-radius: var(--tools-radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: all 0.2s ease;
}

.workload-card.active {
  border-color: rgba(250, 204, 21, 0.4);
  background: rgba(30, 41, 59, 0.7);
}

.workload-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.workload-checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  color: var(--tools-text-primary);
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
}

.workload-checkbox-label input[type="checkbox"] {
  accent-color: var(--tools-yellow);
  width: 17px;
  height: 17px;
  cursor: pointer;
}

.workload-type-pill {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.workload-type-pill.lxc {
  background-color: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.workload-type-pill.vm {
  background-color: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.workload-specs-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.workload-spec-input-group label {
  display: block;
  font-size: 0.72rem;
  color: var(--tools-text-muted);
  margin-bottom: 0.2rem;
}

.workload-spec-input-group input {
  width: 100%;
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  background-color: #0b1120;
  border: 1px solid var(--tools-border);
  border-radius: 4px;
  color: #e2e8f0;
  font-family: monospace;
}

.workload-spec-input-group input:focus {
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
  border-color: var(--tools-yellow);
}

/* Custom Workload Adder */
.add-custom-workload-box {
  background-color: rgba(15, 23, 42, 0.4);
  border: 1px dashed var(--tools-border);
  border-radius: var(--tools-radius-sm);
  padding: 1rem;
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.add-custom-workload-box input,
.add-custom-workload-box select {
  padding: 0.45rem 0.75rem;
  background-color: #0b1120;
  border: 1px solid var(--tools-border);
  border-radius: 4px;
  color: #e2e8f0;
  font-size: 0.85rem;
}

.add-custom-workload-box input:focus,
.add-custom-workload-box select:focus {
  border-color: var(--tools-yellow);
  outline: 2px solid var(--tools-yellow);
  outline-offset: 2px;
}