/* ==========================================================================
   ToolBox Web - Comprehensive Modern Design System
   ========================================================================== */

/* --- CSS Variables & Theming --- */
:root {
  /* Color Palette - Light Mode (Default) */
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-elevated: #f1f5f9;
  --bg-surface-secondary: #f1f5f9;
  --bg-subtle: #e2e8f0;
  --bg-input: #ffffff;

  --text-main: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --border-color: #e2e8f0;
  --border-subtle: #cbd5e1;
  --border-focus: #6366f1;

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-active: #3730a3;
  --primary-light: #eef2ff;
  --primary-text: #ffffff;

  --accent: #06b6d4;
  --accent-hover: #0891b2;
  --accent-light: #ecfeff;

  --success: #10b981;
  --success-light: #ecfdf5;
  --success-border: #a7f3d0;
  --success-text: #065f46;

  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;

  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #991b1b;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.25);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --max-width: 1240px;
  --header-height: 72px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-base: #0b0f19;
  --bg-surface: #111827;
  --bg-elevated: #1f2937;
  --bg-surface-secondary: #1f2937;
  --bg-subtle: #2d3748;
  --bg-input: #151d2e;

  --text-main: #f8fafc;
  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --border-color: #1f293d;
  --border-subtle: #374151;
  --border-focus: #818cf8;

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-active: #4338ca;
  --primary-light: rgba(99, 102, 241, 0.18);
  --primary-text: #ffffff;

  --accent: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-light: rgba(34, 211, 238, 0.15);

  --success: #34d399;
  --success-light: rgba(52, 211, 153, 0.15);
  --success-border: rgba(52, 211, 153, 0.3);
  --success-text: #6ee7b7;

  --warning: #fbbf24;
  --warning-light: rgba(251, 191, 36, 0.15);
  --warning-border: rgba(251, 191, 36, 0.3);
  --warning-text: #fde68a;

  --danger: #f87171;
  --danger-hover: #ef4444;
  --danger-light: rgba(248, 113, 113, 0.15);
  --danger-border: rgba(248, 113, 113, 0.3);
  --danger-text: #fca5a5;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 8px 10px -6px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.35);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Typography Elements */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--primary-hover);
}

/* Utility Containers */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.main-content {
  flex: 1 0 auto;
  padding-bottom: 4rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="dark"] .site-header {
  background-color: rgba(17, 24, 39, 0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand-logo:hover {
  color: var(--text-main);
}

.brand-logo svg {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  flex-shrink: 0;
}

.brand-logo .brand-highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Navigation Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

/* Categories Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.5rem;
  min-width: 240px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 0.5rem;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  background-color: var(--bg-elevated);
  color: var(--primary);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
  transform: scale(1.05);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
}

.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

/* Mobile Hamburger Toggle */
.mobile-toggle-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 4.5rem 0 3.5rem;
  text-align: center;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  max-width: 680px;
  margin: 0 auto 2rem;
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-trust-item svg {
  color: var(--success);
}

/* ==========================================================================
   Buttons & Controls
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-text);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}
.btn-primary:active {
  background-color: var(--primary-active);
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--bg-elevated);
  color: var(--text-main);
  border-color: var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-subtle);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background-color: var(--primary-light);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}
.btn-danger:hover {
  background-color: var(--danger-hover);
}

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-icon {
  padding: 0.6rem;
  width: 40px;
  height: 40px;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ==========================================================================
   Cards & Tool Grid
   ========================================================================== */
.section {
  padding: 3.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2.5rem;
}

.section-title {
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-color);
}

.category-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.4rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.tool-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.tool-card:hover .tool-card-icon {
  background-color: var(--primary);
  color: #ffffff;
  transform: scale(1.08);
}

.tool-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.tool-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.tool-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-elevated);
  color: var(--text-muted);
}

.tool-card-action {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.tool-card:hover .tool-card-action svg {
  transform: translateX(3px);
}

.tool-card-action svg {
  transition: transform var(--transition-fast);
}

/* ==========================================================================
   Tool Workspace Layout (Individual Tool Pages)
   ========================================================================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 1.5rem 0 1.25rem;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-muted);
}
.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs span.separator {
  color: var(--text-light);
}

.tool-header {
  margin-bottom: 2rem;
}

.tool-header-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.tool-header-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
}

.tool-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 800px;
}

/* Main Interactive Tool Container */
.tool-workspace {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
}

/* Drag & Drop Zone */
.dropzone {
  border: 2px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem 1.5rem;
  text-align: center;
  background-color: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.dropzone-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1rem;
  color: var(--primary);
  opacity: 0.85;
}

.dropzone-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.dropzone-hint {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.form-control,
.form-select {
  width: 100%;
  padding: 0.65rem 0.95rem;
  font-size: 0.95rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
  outline: none;
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

textarea.font-mono {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Range Slider */
.slider-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-group input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
  cursor: pointer;
}

.slider-val {
  min-width: 48px;
  font-weight: 700;
  font-family: var(--font-mono);
  text-align: right;
  color: var(--primary);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.form-check input {
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* Controls Grid */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

/* Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

/* Preview Panels */
.preview-container {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-top: 1.5rem;
  overflow: hidden;
  text-align: center;
}

.preview-container img,
.preview-container canvas {
  max-width: 100%;
  max-height: 480px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: inline-block;
  vertical-align: middle;
}

/* Tabs */
.tab-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ==========================================================================
   Step-by-Step Guide & Tool Info Section
   ========================================================================== */
.tool-info-section {
  margin-top: 3.5rem;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0 3rem;
}

.step-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.5rem 0 3rem;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.1rem 1.25rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.faq-question:hover {
  background-color: var(--bg-elevated);
}

.faq-question svg {
  transition: transform var(--transition-normal);
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  display: none;
  line-height: 1.6;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ==========================================================================
   AdSense-Ready Placeholder Slots
   ========================================================================== */
.ad-slot {
  margin: 2.5rem 0;
  padding: 1.5rem;
  background-color: var(--bg-elevated);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
  min-height: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.ad-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
  margin-bottom: 0.4rem;
}

.ad-placeholder-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.ad-banner-slot {
  width: 100%;
  max-width: 970px;
  margin-left: auto;
  margin-right: auto;
  min-height: 100px;
}

/* ==========================================================================
   Informational & Legal Content Pages
   ========================================================================== */
.prose {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  margin: 2rem 0 3rem;
  line-height: 1.7;
}

.prose h1, .prose h2, .prose h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.prose h1:first-child {
  margin-top: 0;
}

.prose ul, .prose ol {
  margin-left: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose-alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  border-left: 4px solid;
}

.prose-alert-info {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--text-main);
}

.prose-alert-warning {
  background-color: var(--warning-light);
  border-color: var(--warning);
  color: var(--warning-text);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 4.5rem 0 2rem;
  margin-top: auto;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  max-width: 320px;
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.social-btn svg {
  width: 18px;
  height: 18px;
}

/* ==========================================================================
   Toast Notification System
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 420px;
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.25rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideInUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.toast-success {
  border-left: 4px solid var(--success);
}
.toast.toast-error {
  border-left: 4px solid var(--danger);
}
.toast.toast-info {
  border-left: 4px solid var(--primary);
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Search & Filter Bar (Tools Catalog)
   ========================================================================== */
.catalog-toolbar {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.search-box-wrapper {
  position: relative;
  margin-bottom: 1.25rem;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 3rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background-color: var(--bg-elevated);
  color: var(--text-main);
}

.search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.filter-pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-pill {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background-color: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover,
.filter-pill.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.catalog-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.no-results {
  text-align: center;
  padding: 4rem 1.5rem;
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-xl);
  margin-bottom: 3rem;
  display: none;
}

/* ==========================================================================
   Animations & Motion Sensitivity
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}