/* ==========================================================================
   FIND FACEBOOK ID MASTER STYLESHEET (ToolVerse Universal Design System)
   Compliant with design.md (Dual Theme: Light #F8FAFC, Dark #090C15)
   ========================================================================== */

/* 1. Global CSS Custom Properties */
:root {
  --bg-main: #F8FAFC;
  --bg-gradient-1: rgba(238, 242, 255, 0.85);
  --bg-gradient-2: rgba(243, 232, 255, 0.75);
  --bg-gradient-3: rgba(224, 231, 255, 0.50);

  --glass-bg: rgba(255, 255, 255, 0.90);
  --glass-border: rgba(226, 232, 240, 0.85);
  --glass-card-bg: rgba(255, 255, 255, 0.92);

  --accent-indigo: #4F46E5;
  --accent-violet: #7C3AED;
  --accent-purple: #9333EA;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-rose: #F43F5E;
  --accent-blue: #2563EB;
  --accent-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  --accent-glow: rgba(79, 70, 229, 0.28);

  --text-primary: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-dim: #94A3B8;

  --input-bg: #FFFFFF;
  --input-border: #E2E8F0;
  --focus-ring: rgba(99, 102, 241, 0.25);

  --card-shadow: 0 10px 30px -5px rgba(79, 70, 229, 0.06), 0 4px 12px -2px rgba(0, 0, 0, 0.03);
  --card-shadow-hover: 0 20px 40px -10px rgba(79, 70, 229, 0.14);

  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* 2. Reset & Base Foundation */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  color: var(--text-body);
  background-color: var(--bg-main);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* 3. Atmospheric Ambient Mists Background */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image: 
    radial-gradient(circle at 18% 12%, var(--bg-gradient-1) 0%, transparent 45%),
    radial-gradient(circle at 82% 24%, var(--bg-gradient-2) 0%, transparent 50%),
    radial-gradient(circle at 50% 82%, var(--bg-gradient-3) 0%, transparent 55%);
  background-color: var(--bg-main);
}

/* Universal Layout Container */
.max-w-7xl {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.max-w-4xl {
  width: 100%;
  max-width: 896px;
  margin-left: auto;
  margin-right: auto;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   FLOATING THEME TOGGLE
   ========================================================================== */
.floating-theme-toggle {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 1000;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-theme-toggle:hover {
  transform: translateY(-2px) scale(1.05);
  color: var(--accent-indigo, #4F46E5);
  border-color: var(--accent-indigo, #4F46E5);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.2);
}

.floating-theme-toggle:active {
  transform: scale(0.96);
}

.floating-theme-toggle .material-symbols-outlined {
  font-size: 1.35rem;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

/* Logo Group */
.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-icon-box {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-anchor {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-anchor:hover,
.nav-anchor.active {
  color: var(--accent-indigo);
}

/* Actions Group */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-icon-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-body);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon-toggle:hover {
  background: #FFFFFF;
  color: var(--accent-indigo);
  transform: translateY(-1px);
}

.btn-gradient-sm {
  background: var(--accent-gradient);
  color: #FFFFFF;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-gradient-sm:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ==========================================================================
   BLOCK 2: STANDARDIZED TOOL HERO HEADER
   ========================================================================== */
.tool-hero-section {
  padding-top: 3.5rem;
  padding-bottom: 2.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Breadcrumb Pill */
.breadcrumb-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  margin-bottom: 1.75rem;
}

.breadcrumb-pill a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color 0.15s ease;
}

.breadcrumb-pill a:hover {
  color: var(--accent-indigo);
}

.breadcrumb-sep {
  color: var(--text-dim);
}

.breadcrumb-active {
  color: var(--accent-indigo);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.live-pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.3);
    opacity: 0.7;
  }
}

/* Hero Title Group */
.hero-title-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.hero-icon-box {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 12px 28px var(--accent-glow), 0 0 0 4px rgba(79, 70, 229, 0.12);
  transition: all 0.3s ease;
}

.hero-icon-box .material-symbols-outlined {
  font-size: 2.35rem;
}

.hero-h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ==========================================================================
   BLOCK 3: INTERACTIVE TOOL WORKSPACE CANVAS
   ========================================================================== */
.workspace-wrapper {
  margin-bottom: 4rem;
}

.glass-card {
  background: var(--glass-card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: var(--card-shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.workspace-card {
  padding: 2.25rem;
  border: 1px solid rgba(79, 70, 229, 0.12);
}

.search-control-container {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Box Title Area */
.urls-title-header {
  margin-bottom: 0.85rem;
  text-align: left;
}

.urls-box-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin: 0;
  text-align: left;
}

.urls-title-divider {
  display: none;
}

/* Textarea Card */
.search-box-canvas-card {
  border-radius: 16px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.search-box-canvas-card:focus-within {
  border-color: var(--accent-indigo);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.urls-canvas-textarea {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  padding: 1.15rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-primary);
  resize: vertical;
  min-height: 130px;
}

.urls-canvas-textarea::placeholder {
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

/* Input Helper Toolbar */
.input-helper-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.85rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.badge-url-count {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(100, 116, 139, 0.08);
  padding: 0.3rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
}

.badge-url-count.badge-full {
  color: var(--accent-indigo);
  background: rgba(79, 70, 229, 0.08);
  border-color: rgba(79, 70, 229, 0.2);
}

.badge-url-count.badge-warning {
  color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
}

.helper-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-helper-link {
  background: transparent;
  border: none;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-indigo);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  transition: all 0.15s ease;
}

.btn-helper-link:hover {
  background: rgba(79, 70, 229, 0.08);
}

.btn-helper-clear {
  color: var(--text-muted);
}

.btn-helper-clear:hover {
  color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.08);
}

/* Submit Action Button */
.btn-submit-action {
  width: 100%;
  background: var(--accent-gradient);
  color: #FFFFFF;
  border: none;
  border-radius: 14px;
  padding: 1rem 1.75rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  box-shadow: 0 8px 24px var(--accent-glow);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-submit-action:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(79, 70, 229, 0.4);
}

.btn-submit-action:active:not(:disabled) {
  transform: translateY(0);
}

.btn-submit-action:disabled {
  opacity: 0.75;
  cursor: not-allowed;
}

.spin-loader {
  animation: spin 1s infinite linear;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   STREAMLINED RESULT SECTION & TABLE
   ========================================================================== */
.result-showcase-section {
  margin-top: 2.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.result-header-row {
  margin-bottom: 1.5rem;
  text-align: center;
}

.result-center-heading {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.result-table-card {
  width: 100%;
  border-radius: 18px;
  border: 1px solid var(--input-border);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  background: #FFFFFF;
}

.status-result-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.status-result-table th {
  background: #F1F5F9;
  font-family: var(--font-display);
  font-size: 0.925rem;
  font-weight: 700;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text-primary);
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--input-border);
  border-right: 1px solid var(--input-border);
}

.status-result-table th:last-child {
  border-right: none;
}

.status-result-table td {
  padding: 1.1rem 1.15rem;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--input-border);
  border-right: 1px solid var(--input-border);
  vertical-align: middle;
}

.status-result-table td:last-child {
  border-right: none;
}

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

.status-result-table tr:hover td {
  background-color: rgba(248, 250, 252, 0.85);
}

/* 2 Clean Table Columns: Facebook URL & Facebook ID */
.status-result-table th.col-fb-url,
.status-result-table td.col-fb-url {
  width: 55%;
  text-align: center;
}

.status-result-table th.col-fb-id,
.status-result-table td.col-fb-id {
  width: 45%;
  text-align: center;
}

/* 1. Facebook URL Column */
.fb-url-link {
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease, text-decoration 0.15s ease;
  display: inline-block;
  max-width: 100%;
  word-break: break-all;
}

.fb-url-link:hover {
  color: var(--accent-indigo);
  text-decoration: underline;
}

/* 3. Facebook ID & 1-Click Copy */
.fbid-action-group {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.fbid-number-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.btn-copy-id {
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.2);
  color: var(--accent-indigo);
  border-radius: 6px;
  padding: 0.25rem 0.45rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-copy-id:hover {
  background: var(--accent-indigo);
  color: #FFFFFF;
}

.btn-copy-id .material-symbols-outlined {
  font-size: 0.95rem;
}

/* 4. Direct Link Column */
.profile-dest-link {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease, text-decoration 0.15s ease;
  display: inline-block;
  max-width: 100%;
  word-break: break-all;
}

.profile-dest-link:hover {
  color: var(--accent-indigo);
  text-decoration: underline;
}

/* ==========================================================================
   BLOCK 4: EDUCATIONAL CONTENT & SEO SECTION
   ========================================================================== */
.guide-seo-section {
  padding-top: 2rem;
  padding-bottom: 3.5rem;
}

.section-h2 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section-sub {
  font-size: 0.975rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 620px;
  margin: 0 auto 2.25rem auto;
}

/* 3 Steps Guide Grid */
.steps-guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.step-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1.85rem 1.65rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.step-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow);
}

.step-number-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-gradient);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 10px var(--accent-glow);
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.8875rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* 4 Key Diagnostic Features */
.feature-benefit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 4rem;
}

.feature-box {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1.65rem 1.35rem;
  transition: all 0.3s ease;
}

.feature-box:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: var(--card-shadow-hover);
}

.feature-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.15rem;
}

.feature-icon-wrapper .material-symbols-outlined {
  font-size: 1.45rem;
}

.feature-box-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.feature-box-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   BLOCK 4: FAQ ACCORDION SECTION
   ========================================================================== */
.faq-accordion-container {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-item.active {
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.06);
}

.faq-trigger-btn {
  width: 100%;
  background: transparent;
  border: none;
  padding: 1.25rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
}

.faq-question-text {
  font-family: var(--font-display);
  font-size: 1.025rem;
  font-weight: 700;
  color: var(--text-primary);
}

.faq-chevron {
  color: var(--text-muted);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent-indigo);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
  padding: 0 1.4rem 1.25rem 1.4rem;
  font-size: 0.9125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   BLOCK 5: RELATED TOOLS SECTION
   ========================================================================== */
.related-tools-section {
  padding: 2.5rem 0 4.5rem 0;
  border-top: 1px solid var(--glass-border);
}

.related-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.tool-link-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.35rem 1.25rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-link-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-indigo);
  box-shadow: var(--card-shadow);
}

.tool-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(79, 70, 229, 0.08);
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
}

.tool-card-icon .material-symbols-outlined {
  font-size: 1.25rem;
}

.tool-card-title {
  font-family: var(--font-display);
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.tool-card-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ==========================================================================
   BLOCK 6: STANDARDIZED FOOTER
   ========================================================================== */
#masterFooter {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--glass-border);
  padding-top: 3.5rem;
  padding-bottom: 2rem;
  margin-top: auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand-p {
  font-size: 0.8875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.85rem;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-links-list a:hover {
  color: var(--accent-indigo);
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.75rem;
  border-top: 1px solid var(--glass-border);
  font-size: 0.8125rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: var(--text-dim);
  text-decoration: none;
}

.footer-bottom-links a:hover {
  color: var(--accent-indigo);
}

/* Toast Banner */
.toast-banner {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  background: #0F172A;
  color: #FFFFFF;
  padding: 0.75rem 1.25rem;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  font-size: 0.875rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transform: translateY(120%);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

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

/* ==========================================================================
   UNIVERSAL DARK THEME COMPANION (html.dark)
   ========================================================================== */
html.dark {
  --bg-main: #090C15;
  --bg-gradient-1: rgba(99, 102, 241, 0.15);
  --bg-gradient-2: rgba(168, 85, 247, 0.12);
  --bg-gradient-3: rgba(59, 130, 246, 0.08);

  --glass-bg: rgba(19, 26, 46, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-card-bg: rgba(15, 22, 41, 0.82);

  --text-primary: #F8FAFC;
  --text-body: #CBD5E1;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --input-bg: rgba(15, 23, 42, 0.85);
  --input-border: rgba(255, 255, 255, 0.1);
  --focus-ring: rgba(99, 102, 241, 0.35);

  --card-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
  --card-shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.7);
}

html.dark body {
  background-color: #090C15;
  color: #CBD5E1;
}

html.dark .navbar-sticky {
  background: rgba(9, 12, 21, 0.85);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

html.dark .badge-url-count {
  background: rgba(15, 23, 42, 0.8);
  border-color: rgba(255, 255, 255, 0.1);
  color: #94A3B8;
}

html.dark .btn-helper-link:hover {
  background: rgba(99, 102, 241, 0.15);
}

html.dark .urls-canvas-textarea {
  color: #F8FAFC;
}

/* DARK MODE TABLE */
html.dark .result-table-card {
  border: 1px solid #33383f;
  background: #1e2227;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

html.dark .status-result-table th {
  background-color: #24282e;
  color: #FFFFFF;
  font-weight: 700;
  border-bottom: 1px solid #33383f;
  border-right: 1px solid #33383f;
}

html.dark .status-result-table td {
  background-color: #1a1e23;
  color: #FFFFFF;
  border-bottom: 1px solid #2a2f36;
  border-right: 1px solid #2a2f36;
}

html.dark .status-result-table tr:hover td {
  background-color: #22262d;
}

html.dark .fb-url-link {
  color: #F8FAFC;
}

html.dark .fb-url-link:hover {
  color: #38BDF8;
  text-decoration: underline;
}

html.dark .fbid-number-text {
  color: #FFFFFF;
}

html.dark .btn-copy-id {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.4);
  color: #A5B4FC;
}

html.dark .btn-copy-id:hover {
  background: var(--accent-indigo);
  color: #FFFFFF;
}

html.dark .step-card,
html.dark .feature-box,
html.dark .tool-link-card,
html.dark .faq-item {
  background: rgba(19, 26, 46, 0.75);
  border-color: rgba(255, 255, 255, 0.08);
}

html.dark .related-tools-section {
  border-top-color: rgba(255, 255, 255, 0.08);
}

html.dark #masterFooter {
  background: rgba(9, 12, 21, 0.9);
  border-top-color: rgba(255, 255, 255, 0.08);
}

html.dark .footer-bottom-bar {
  border-top-color: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .steps-guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-benefit-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-actions .btn-gradient-sm {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-h1 {
    font-size: 2.15rem;
  }

  .hero-icon-box {
    width: 56px;
    height: 56px;
  }

  .hero-icon-box .material-symbols-outlined {
    font-size: 1.85rem;
  }

  .workspace-card {
    padding: 1.35rem;
  }

  .steps-guide-grid {
    grid-template-columns: 1fr;
  }

  .feature-benefit-grid {
    grid-template-columns: 1fr;
  }

  .related-cards-grid {
    grid-template-columns: 1fr;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }

  .status-result-table th,
  .status-result-table td {
    padding: 0.75rem 0.85rem;
    font-size: 0.85rem;
  }

  .fb-url-link,
  .fbid-number-text {
    font-size: 0.825rem;
  }
}