/* ==============================================================================
   TITAN IT - THE ULTIMATE ENTERPRISE IT & TROUBLESHOOTING ENCYCLOPEDIA
   STYLESHEET (CSS 3) - Modern, Responsive, Cyber-Clean Dark & Light Themes
   ============================================================================== */

:root {
  /* Color Palette - Dark Mode Default */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.9);
  --bg-modal: #111827;
  --bg-input: #1e293b;

  --border-color: #374151;
  --border-focus: #3b82f6;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --text-inverse: #111827;

  /* Accents */
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-purple: #8b5cf6;

  /* Severity Badges */
  --sev-critical-bg: rgba(244, 63, 94, 0.15);
  --sev-critical-text: #fb7185;
  --sev-critical-border: rgba(244, 63, 94, 0.35);

  --sev-high-bg: rgba(245, 158, 11, 0.15);
  --sev-high-text: #fbbf24;
  --sev-high-border: rgba(245, 158, 11, 0.35);

  --sev-medium-bg: rgba(59, 130, 246, 0.15);
  --sev-medium-text: #60a5fa;
  --sev-medium-border: rgba(59, 130, 246, 0.35);

  --sev-low-bg: rgba(16, 185, 129, 0.15);
  --sev-low-text: #34d399;
  --sev-low-border: rgba(16, 185, 129, 0.35);

  /* Code Block Colors */
  --code-bg: #090d16;
  --code-text: #38bdf8;
  --code-border: #1e293b;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.2);

  /* Spacing & Layout */
  --sidebar-width: 290px;
  --header-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 'Courier New', Courier, monospace;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
body.light-theme {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(248, 250, 252, 1);
  --bg-modal: #ffffff;
  --bg-input: #f1f5f9;

  --border-color: #e2e8f0;
  --border-focus: #2563eb;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  --text-inverse: #f8fafc;

  --code-bg: #1e293b;
  --code-text: #38bdf8;
  --code-border: #cbd5e1;

  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.12);
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 15px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* Emergency Broadcast Banner */
.emergency-banner {
  background: linear-gradient(90deg, #991b1b, #dc2626, #b91c1c);
  color: #fff;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 1000;
  position: relative;
}
.emergency-content {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.emergency-badge {
  background: rgba(0,0,0,0.3);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border: 1px solid rgba(255,255,255,0.4);
}
.emergency-link {
  color: #fff;
  text-decoration: underline;
  cursor: pointer;
  font-weight: 700;
  transition: opacity 0.2s;
}
.emergency-link:hover {
  opacity: 0.85;
}
.banner-close-btn {
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1.1rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.banner-close-btn:hover {
  background: rgba(0, 0, 0, 0.2);
}

/* Master Header */
.master-header {
  height: var(--header-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 900;
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 20px;
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 250px;
}
.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.3rem;
  box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
}
.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}
.brand-version {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--sev-medium-bg);
  color: var(--accent-blue);
  font-weight: 700;
  border: 1px solid var(--sev-medium-border);
}
.brand-text p {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Global Live Search Bar */
.search-wrapper {
  flex: 1;
  max-width: 650px;
  position: relative;
}
.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
  font-size: 1rem;
}
.global-search-input {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 10px 42px 10px 40px;
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}
.global-search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  background-color: var(--bg-secondary);
}
.search-shortcut {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-tertiary);
  color: var(--text-dim);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  border: 1px solid var(--border-color);
  pointer-events: none;
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-main);
  transition: var(--transition);
  text-decoration: none;
  user-select: none;
  white-space: nowrap;
}
.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-dim);
}
.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  border: 1px solid #1e40af;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}
.btn-emerald {
  background: linear-gradient(135deg, #059669, #047857);
  color: #fff;
  border: 1px solid #065f46;
}
.btn-emerald:hover {
  background: linear-gradient(135deg, #047857, #065f46);
}
.btn-icon-only {
  width: 38px;
  height: 38px;
  padding: 0;
  justify-content: center;
  border-radius: var(--radius-md);
}

/* App Layout Grid */
.app-container {
  display: flex;
  min-height: calc(100vh - var(--header-height));
}

/* Left Sidebar - Navigation & Filters */
.app-sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 8px;
  padding-left: 8px;
}

.category-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.category-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.category-nav-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-main);
}
.category-nav-item.active {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.15), rgba(6, 182, 212, 0.08));
  color: var(--accent-blue);
  font-weight: 600;
  border-color: rgba(59, 130, 246, 0.3);
}
.category-nav-item-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.cat-icon {
  font-size: 1.05rem;
  width: 20px;
  text-align: center;
}
.cat-count {
  font-size: 0.72rem;
  padding: 1px 7px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  color: var(--text-dim);
  font-weight: 600;
}
.category-nav-item.active .cat-count {
  background: rgba(59, 130, 246, 0.2);
  color: var(--accent-blue);
}

/* Quick Tools in Sidebar */
.tools-quick-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tool-quick-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}
.tool-quick-btn:hover {
  border-color: var(--accent-blue);
  background-color: var(--bg-tertiary);
  transform: translateX(2px);
}

/* Main Content Area */
.main-content {
  flex: 1;
  padding: 24px 32px 60px;
  max-width: 1400px;
  margin: 0 auto;
  overflow-y: auto;
}

/* Hero / Announcement Card */
.hero-hub-card {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.3) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
.hero-hub-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-hub-left h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  background: linear-gradient(90deg, #60a5fa, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-hub-left p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 700px;
}
.hero-hub-badges {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.stat-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-main);
}
.stat-pill-highlight {
  color: var(--accent-cyan);
}
.hero-hub-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

/* Control Bar: Filters & View Modes */
.controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}
.filter-pills-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-pill {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.filter-pill:hover {
  border-color: var(--accent-blue);
  color: var(--text-main);
}
.filter-pill.active {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.view-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Issue Grid Cards */
.issues-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 20px;
}

.issue-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  backdrop-filter: blur(8px);
}
.issue-card:hover {
  transform: translateY(-3px);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: var(--shadow-lg);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 12px;
}
.card-badges {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.cat-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.2);
}
.sev-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}
.sev-critical {
  background: var(--sev-critical-bg);
  color: var(--sev-critical-text);
  border: 1px solid var(--sev-critical-border);
}
.sev-high {
  background: var(--sev-high-bg);
  color: var(--sev-high-text);
  border: 1px solid var(--sev-high-border);
}
.sev-medium {
  background: var(--sev-medium-bg);
  color: var(--sev-medium-text);
  border: 1px solid var(--sev-medium-border);
}
.sev-low {
  background: var(--sev-low-bg);
  color: var(--sev-low-text);
  border: 1px solid var(--sev-low-border);
}

.bookmark-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.15rem;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.bookmark-btn:hover {
  color: var(--accent-amber);
}
.bookmark-btn.active {
  color: var(--accent-amber);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--text-main);
  cursor: pointer;
}
.card-title:hover {
  color: var(--accent-blue);
}

.card-error-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid rgba(244, 63, 94, 0.2);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.card-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Quick Snippet Box inside card */
.card-quick-code {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  margin-bottom: 16px;
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--code-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-quick-code code {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 85%;
}
.quick-copy-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.95rem;
  padding: 4px 6px;
  border-radius: 4px;
  transition: var(--transition);
}
.quick-copy-icon:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-top: auto;
}
.card-tags-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.tag-badge {
  font-size: 0.7rem;
  color: var(--text-dim);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
}
.view-details-btn {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.view-details-btn:hover {
  color: var(--accent-cyan);
  transform: translateX(3px);
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
}
.empty-icon {
  font-size: 3rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.empty-state h3 {
  font-size: 1.2rem;
  color: var(--text-main);
  margin-bottom: 6px;
}
.empty-state p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* Modal Dialogs - Deep Dive Solutions */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  z-index: 1050;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--bg-modal);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}
.modal-overlay.open .modal-box {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-secondary);
}
.modal-title-group h2 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
  line-height: 1.3;
}
.modal-meta-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.modal-close-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.modal-close-btn:hover {
  background: var(--accent-rose);
  color: #fff;
  border-color: var(--accent-rose);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.solution-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.solution-section-title i {
  color: var(--accent-blue);
}

.solution-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.steps-list {
  list-style: none;
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.step-item {
  counter-increment: step-counter;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.step-number {
  background: var(--accent-blue);
  color: #fff;
  font-weight: 800;
  font-size: 0.8rem;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.step-content {
  flex: 1;
}
.step-title {
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
  font-size: 0.95rem;
}
.step-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 8px;
}

/* Big Code Snippet inside Modal */
.code-wrapper {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 10px 0;
}
.code-header {
  background: rgba(255, 255, 255, 0.03);
  padding: 6px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--code-border);
}
.code-lang-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
}
.code-copy-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  transition: var(--transition);
}
.code-copy-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.code-content {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--code-text);
  overflow-x: auto;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Callout Alert Boxes inside Modal */
.alert-callout {
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.88rem;
  line-height: 1.45;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.alert-callout-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fde68a;
}
.alert-callout-danger {
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fecdd3;
}
.alert-callout-tip {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #a7f3d0;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Interactive Wizard Drawer / Modal */
.wizard-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.wizard-step-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.wizard-badge {
  background: var(--accent-purple);
  color: #fff;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}
.wizard-question {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.wizard-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.wizard-option-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
  color: var(--text-main);
  font-size: 0.92rem;
  font-weight: 600;
}
.wizard-option-btn:hover {
  border-color: var(--accent-purple);
  background: rgba(139, 92, 246, 0.1);
  transform: translateX(4px);
}
.wizard-outcome-card {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
  padding: 20px;
}

/* Tools Drawer / Modal - Subnet Calc & Batch Gen */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 768px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }
}
.tool-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}
.tool-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}
.tool-input, .tool-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  font-family: inherit;
}
.tool-input:focus, .tool-select:focus {
  border-color: var(--accent-blue);
}
.calc-results-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 0.85rem;
}
.calc-results-table th, .calc-results-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}
.calc-results-table th {
  color: var(--text-dim);
  font-weight: 600;
}
.calc-results-table td {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1e293b;
  color: #fff;
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 2000;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  font-size: 0.88rem;
  font-weight: 600;
}
.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}
.toast-success {
  border-left: 4px solid var(--accent-emerald);
}

/* Responsive Rules */
@media (max-width: 1024px) {
  .app-sidebar {
    position: fixed;
    left: -100%;
    z-index: 950;
    transition: left 0.3s ease;
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
  }
  .app-sidebar.mobile-open {
    left: 0;
  }
  .mobile-menu-toggle {
    display: flex !important;
  }
}

.mobile-menu-toggle {
  display: none;
}

@media (max-width: 768px) {
  .master-header {
    padding: 0 14px;
    gap: 10px;
  }
  .brand-text p {
    display: none;
  }
  .main-content {
    padding: 16px;
  }
  .hero-hub-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .issues-grid {
    grid-template-columns: 1fr;
  }
}

/* Print Friendly Styles */
@media print {
  .emergency-banner, .master-header, .app-sidebar, .controls-bar, .hero-hub-actions, .bookmark-btn, .view-details-btn, .quick-copy-icon {
    display: none !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .main-content {
    padding: 0;
    max-width: 100%;
  }
  .issue-card {
    border: 1px solid #ccc;
    page-break-inside: avoid;
    margin-bottom: 20px;
    box-shadow: none;
  }
}