/**
 * Author Personal Blog - Global Stylesheet
 * File: assets/css/global.css
 * 
 * Scope: Design Tokens (:root), Resets, Zero-Overflow Guards, Accessibility,
 *        Unified Layout Grid, Buttons, Category Badges, Header & 4-Tier Menu,
 *        Off-Canvas Mobile Drawer, Page Banner & Breadcrumbs, and Site Footer.
 * Loaded Everywhere: Included across all templates.
 */

/* ==========================================================================
   1. CSS Custom Properties (:root Design Tokens)
   ========================================================================== */
:root {
  /* Brand Color Palette */
  --apb-color-primary: #0d5c63;
  /* Deep Regal Teal */
  --apb-color-primary-hover: #084349;
  /* Darkened Teal */
  --apb-color-primary-light: #e6f4f5;
  /* Soft Tint Teal */

  --apb-color-accent: #e07a5f;
  /* Warm Terra Cotta / Coral */
  --apb-color-accent-hover: #c86348;
  /* Darker Coral */
  --apb-color-accent-light: #fdf2ef;
  /* Light Coral Tint */

  --apb-color-price: var(--apb-color-accent, #e07a5f);
  --apb-color-sticky-bg: var(--apb-color-accent-light, #fdf2ef);
  /* Tint for Sticky Posts */
  --apb-color-sticky-border: var(--apb-color-accent, #e07a5f);
  /* Accent Border for Sticky Posts */

  --apb-color-heading: #1e293b;
  /* Slate 800 - Deep Heading */
  --apb-color-text: #475569;
  /* Slate 600 - Body Copy */
  --apb-color-text-muted: #64748b;
  /* Slate 500 - Secondary Meta */
  --apb-color-text-light: #94a3b8;
  /* Slate 400 - Subtle Text */

  --apb-color-bg-body: #f8fafc;
  /* Slate 50 - Canvas Background */
  --apb-color-bg-card: #ffffff;
  /* Clean White Card Surface */
  --apb-color-bg-alt: #f1f5f9;
  /* Slate 100 - Secondary Surfaces */
  --apb-color-bg: var(--apb-color-bg-body, #f8fafc);
  --apb-color-surface: var(--apb-color-bg-card, #ffffff);
  --apb-color-surface-alt: var(--apb-color-bg-alt, #f1f5f9);
  --apb-color-border: #e2e8f0;
  /* Slate 200 - Borders */
  --apb-color-border-dark: #cbd5e1;
  /* Slate 300 - Divider Borders */

  /* Focus & Accessibility Indicators */
  --apb-focus-ring-color: #e07a5f;
  --apb-focus-ring-width: 3px;
  --apb-focus-ring-offset: 2px;

  /* Typography System */
  --apb-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --apb-font-serif: 'Playfair Display', Georgia, Cambria, 'Times New Roman', serif;

  /* Fluid Scaled Font Sizes (clamp) */
  --apb-font-size-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);
  /* 11px - 12px */
  --apb-font-size-sm: clamp(0.8125rem, 0.77rem + 0.2vw, 0.875rem);
  /* 13px - 14px */
  --apb-font-size-base: clamp(0.9375rem, 0.9rem + 0.25vw, 1.05rem);
  /* 15px - 16.8px */
  --apb-font-size-md: clamp(1.0625rem, 1rem + 0.35vw, 1.2rem);
  /* 17px - 19.2px */
  --apb-font-size-lg: clamp(1.15rem, 1.05rem + 0.5vw, 1.35rem);
  /* 18.4px - 21.6px */
  --apb-font-size-xl: clamp(1.25rem, 1.15rem + 0.6vw, 1.5rem);
  /* 20px - 24px */
  --apb-font-size-2xl: clamp(1.45rem, 1.25rem + 1vw, 1.875rem);
  /* 23.2px - 30px */
  --apb-font-size-3xl: clamp(1.75rem, 1.4rem + 1.6vw, 2.35rem);
  /* 28px - 37.6px */
  --apb-font-size-4xl: clamp(2rem, 1.6rem + 2.2vw, 3.25rem);
  /* 32px - 52px */

  /* Dedicated Fluid Heading Scales (H1 - H6) */
  --apb-font-size-h1: clamp(2rem, 4vw + 0.5rem, 3.25rem);
  /* 32px - 52px */
  --apb-font-size-h2: clamp(1.65rem, 3vw + 0.35rem, 2.5rem);
  /* 26.4px - 40px */
  --apb-font-size-h3: clamp(1.35rem, 2.2vw + 0.25rem, 1.875rem);
  /* 21.6px - 30px */
  --apb-font-size-h4: clamp(1.15rem, 1.5vw + 0.2rem, 1.5rem);
  /* 18.4px - 24px */
  --apb-font-size-h5: clamp(1.025rem, 1vw + 0.15rem, 1.25rem);
  /* 16.4px - 20px */
  --apb-font-size-h6: clamp(0.875rem, 0.75rem + 0.3vw, 1.05rem);
  /* 14px - 16.8px */

  --apb-line-height-h1: 1.12;
  --apb-line-height-h2: 1.2;
  --apb-line-height-h3: 1.25;
  --apb-line-height-h4: 1.3;
  --apb-line-height-h5: 1.35;
  --apb-line-height-h6: 1.4;

  --apb-letter-spacing-h1: -0.02em;
  --apb-letter-spacing-h2: -0.015em;
  --apb-letter-spacing-h3: -0.01em;
  --apb-letter-spacing-h4: 0em;
  --apb-letter-spacing-h5: 0.02em;
  --apb-letter-spacing-h6: 0.05em;

  --apb-heading-font-weight: 700;
  --apb-heading-font-weight-heavy: 800;
  --apb-heading-margin-bottom: 0.75rem;

  --apb-font-weight-normal: 400;
  --apb-font-weight-medium: 500;
  --apb-font-weight-semibold: 600;
  --apb-font-weight-bold: 700;
  --apb-font-weight-extrabold: 800;

  --apb-line-height-tight: 1.2;
  --apb-line-height-base: 1.65;
  --apb-line-height-relaxed: 1.8;

  /* Layout & Spacing */
  --apb-container-width: 1200px;
  --apb-container-padding: clamp(1rem, 4vw, 2rem);
  --apb-section-spacing: clamp(2.75rem, 5vw + 1rem, 5rem);

  --apb-space-1: 0.25rem;
  --apb-space-2: 0.5rem;
  --apb-space-3: 0.75rem;
  --apb-space-4: 1rem;
  --apb-space-5: 1.25rem;
  --apb-space-6: 1.5rem;
  --apb-space-8: 2rem;
  --apb-space-10: 2.5rem;
  --apb-space-12: 3rem;

  /* Borders & Radius */
  --apb-radius-sm: 4px;
  --apb-radius-md: 8px;
  --apb-radius-lg: 14px;
  --apb-radius-full: 9999px;

  /* Box Shadows */
  --apb-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --apb-shadow-md: 0 4px 8px -2px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --apb-shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.1), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
  --apb-shadow-dropdown: 0 16px 36px -4px rgba(15, 23, 42, 0.15), 0 4px 10px -2px rgba(15, 23, 42, 0.05);
  --apb-shadow-card: 0 4px 12px 0 rgba(15, 23, 42, 0.05);
  --apb-shadow-card-hover: 0 16px 28px -6px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --apb-transition-fast: 0.15s ease;
  --apb-transition-base: 0.25s ease;
  --apb-transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. Global Reset & Zero-Overflow Guards
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  overflow-x: hidden;
  position: relative;
  font-family: var(--apb-font-sans);
  font-size: var(--apb-font-size-base);
  line-height: var(--apb-line-height-base);
  color: var(--apb-color-text);
  background-color: var(--apb-color-bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
video,
canvas,
audio,
iframe,
picture {
  display: block;
  max-width: 100%;
  height: auto;
}

svg {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

.apb-meta-icon {
  width: 14px;
  height: 14px;
  display: inline-block;
  vertical-align: -2px;
  margin-right: 4px;
  flex-shrink: 0;
}

.apb-btn-icon {
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

a {
  color: var(--apb-color-primary);
  text-decoration: none;
  transition: color var(--apb-transition-fast), background-color var(--apb-transition-fast), border-color var(--apb-transition-fast);
}

a:hover {
  color: var(--apb-color-accent);
}

:focus-visible {
  outline: var(--apb-focus-ring-width) solid var(--apb-focus-ring-color);
  outline-offset: var(--apb-focus-ring-offset);
  border-radius: var(--apb-radius-sm);
}

ul,
ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

:where(button, input, textarea, select) {
  font: inherit;
  max-width: 100%;
}

:where(button, input[type="button"], input[type="submit"], input[type="reset"]) {
  cursor: pointer;
  border: none;
  background: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--apb-color-heading);
  font-family: var(--apb-font-serif);
  font-weight: var(--apb-heading-font-weight);
  margin-top: 0;
  margin-bottom: var(--apb-heading-margin-bottom);
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: normal;
}

h1 {
  font-size: var(--apb-font-size-h1);
  line-height: var(--apb-line-height-h1);
  letter-spacing: var(--apb-letter-spacing-h1);
  font-weight: var(--apb-heading-font-weight-heavy);
}

h2 {
  font-size: var(--apb-font-size-h2);
  line-height: var(--apb-line-height-h2);
  letter-spacing: var(--apb-letter-spacing-h2);
}

h3 {
  font-size: var(--apb-font-size-h3);
  line-height: var(--apb-line-height-h3);
  letter-spacing: var(--apb-letter-spacing-h3);
}

h4 {
  font-size: var(--apb-font-size-h4);
  line-height: var(--apb-line-height-h4);
  letter-spacing: var(--apb-letter-spacing-h4);
}

h5 {
  font-size: var(--apb-font-size-h5);
  line-height: var(--apb-line-height-h5);
  letter-spacing: var(--apb-letter-spacing-h5);
}

h6 {
  font-size: var(--apb-font-size-h6);
  line-height: var(--apb-line-height-h6);
  letter-spacing: var(--apb-letter-spacing-h6);
  text-transform: uppercase;
}

p,
span,
li,
a {
  overflow-wrap: break-word;
  word-wrap: break-word;
}

/* ==========================================================================
   3. Accessibility & WordPress Core Classes
   ========================================================================== */
.screen-reader-text,
.apb-screen-reader-text,
.apb-sr-only {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  -webkit-clip-path: inset(50%);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  width: 1px;
  word-wrap: normal !important;
}

.screen-reader-text:focus,
.apb-screen-reader-text:focus {
  background-color: var(--apb-color-surface, #ffffff);
  border-radius: var(--apb-radius-sm, 4px);
  box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
  clip: auto !important;
  -webkit-clip-path: none;
  clip-path: none;
  color: var(--apb-color-primary, #0d5c63);
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  height: auto;
  left: 5px;
  line-height: normal;
  padding: 15px 23px 14px;
  text-decoration: none;
  top: 5px;
  width: auto;
  z-index: 100000;
}

/* Post Author Comment Highlight */
.bypostauthor {
  display: block;
}

.comment.bypostauthor > .comment-body,
.comment-list .bypostauthor > article {
  position: relative;
  border-left: 3px solid var(--apb-color-primary, #0d5c63);
}

/* WordPress Standard Alignment Classes */
.alignleft {
  float: left;
  margin-right: 1.5em;
  margin-bottom: 1.5em;
  max-width: 100%;
}

.alignright {
  float: right;
  margin-left: 1.5em;
  margin-bottom: 1.5em;
  max-width: 100%;
}

.aligncenter {
  clear: both;
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 1.5em;
  text-align: center;
}

.alignnone {
  margin: 0.5em 0;
}

/* WordPress Standard Captions */
.wp-caption {
  margin-bottom: 1.5em;
  max-width: 100%;
  text-align: center;
  border: 1px solid var(--apb-color-border-subtle, #e2e8f0);
  background: var(--apb-color-surface-subtle, #f8fafc);
  padding: 6px;
  border-radius: var(--apb-radius-sm, 6px);
}

.wp-caption img[class*="wp-image-"] {
  display: block;
  margin-left: auto;
  margin-right: auto;
  max-width: 100%;
  height: auto;
  border-radius: calc(var(--apb-radius-sm, 6px) - 2px);
}

.wp-caption-text,
.gallery-caption,
.wp-block-image figcaption,
.wp-block-gallery figcaption {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--apb-color-text-muted, #64748b);
  margin-top: 0.5rem;
  margin-bottom: 0.25rem;
  text-align: center;
  font-style: italic;
}

.apb-skip-link {
  position: absolute;
  top: -100px;
  left: var(--apb-space-4);
  background: var(--apb-color-primary);
  color: #ffffff;
  padding: var(--apb-space-3) var(--apb-space-5);
  font-weight: var(--apb-font-weight-semibold);
  font-size: var(--apb-font-size-sm);
  z-index: 9999;
  border-radius: var(--apb-radius-sm);
  box-shadow: var(--apb-shadow-lg);
  transition: top var(--apb-transition-fast);
}

.apb-skip-link:focus {
  top: var(--apb-space-4);
  color: #ffffff;
}

/* Unified Container & Layout Grid */
.apb-container,
.site-content>.container {
  width: 100%;
  max-width: var(--apb-container-width, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
}

.apb-section,
.apb-front-section {
  padding-block: var(--apb-section-spacing, clamp(3rem, 6vw, 5.5rem));
  position: relative;
}

.apb-front-section-alt {
  background-color: var(--apb-color-bg-alt, var(--apb-color-surface-alt, #f1f5f9));
}

.apb-front-section-white {
  background-color: var(--apb-color-bg-card, var(--apb-color-surface, #ffffff));
}

.apb-main-content {
  padding-block: clamp(2rem, 4vw, 3.5rem);
}

.apb-content-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  align-items: start;
  width: 100%;
}

/* Left Sidebar Layout */
body.apb-sidebar-left .apb-content-layout,
body.layout-left-sidebar .apb-content-layout,
.apb-content-layout.apb-layout-left-sidebar {
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr);
}

body.apb-sidebar-left .apb-content-layout>.apb-latest-posts,
body.apb-sidebar-left .apb-content-layout>article,
body.layout-left-sidebar .apb-content-layout>.apb-latest-posts,
body.layout-left-sidebar .apb-content-layout>article,
.apb-content-layout.apb-layout-left-sidebar>.apb-latest-posts,
.apb-content-layout.apb-layout-left-sidebar>article {
  order: 2;
}

body.apb-sidebar-left .apb-content-layout>.apb-sidebar,
body.layout-left-sidebar .apb-content-layout>.apb-sidebar,
.apb-content-layout.apb-layout-left-sidebar>.apb-sidebar {
  order: 1;
}

/* No Sidebar Layout: Full-width Expansion */
body.apb-no-sidebar .apb-main-layout,
body.apb-no-sidebar .site-content,
body.apb-no-sidebar .apb-content-grid-wrap,
body.apb-no-sidebar .apb-content-layout,
body.layout-no-sidebar .apb-content-layout,
.apb-content-layout.apb-layout-no-sidebar {
  display: block;
  width: 100%;
  max-width: var(--apb-container-width, 1200px);
  margin-inline: auto;
}

body.apb-no-sidebar .apb-content-layout>.apb-latest-posts,
body.apb-no-sidebar .apb-content-layout>article,
body.apb-no-sidebar #primary,
body.apb-no-sidebar .apb-primary-area,
body.layout-no-sidebar .apb-content-layout>.apb-latest-posts,
body.layout-no-sidebar .apb-content-layout>article,
.apb-layout-no-sidebar>.apb-latest-posts,
.apb-layout-no-sidebar>article {
  width: 100%;
  max-width: 100%;
  float: none;
}

body.apb-no-sidebar #secondary,
body.apb-no-sidebar .apb-sidebar-area,
body.apb-no-sidebar .apb-sidebar,
body.layout-no-sidebar .apb-sidebar,
.apb-layout-no-sidebar>.apb-sidebar {
  display: none;
}

/* ==========================================================================
   Base Button Architecture (Standard Single Class Specificity (0, 1, 0))
   ========================================================================== */

/* 1. Core Button Primitives */
.apb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--apb-space-2, 0.5rem);
  padding: 0.65rem 1.4rem;
  font-family: var(--apb-font-sans);
  font-size: var(--apb-font-size-sm);
  font-weight: var(--apb-font-weight-semibold, 600);
  line-height: 1.25;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  border-radius: var(--apb-radius-sm, 4px);
  border: 1px solid transparent;
  box-sizing: border-box;
  transition: all var(--apb-transition-fast, 0.15s ease);
}

.apb-btn:focus-visible {
  outline: var(--apb-focus-ring-width, 2px) solid var(--apb-color-primary);
  outline-offset: var(--apb-focus-ring-offset, 2px);
}

/* 2. Color Variants */
.apb-btn-primary {
  background-color: var(--apb-color-primary);
  border-color: var(--apb-color-primary);
  color: #ffffff;
  box-shadow: var(--apb-shadow-sm);
}

.apb-btn-primary:hover,
.apb-btn-primary:focus {
  background-color: var(--apb-color-primary-hover);
  border-color: var(--apb-color-primary-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--apb-shadow-md);
}

.apb-btn-secondary {
  background-color: transparent;
  border-color: var(--apb-color-border-dark);
  color: var(--apb-color-heading);
}

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

.apb-btn-accent {
  background-color: var(--apb-color-accent);
  border-color: var(--apb-color-accent);
  color: #ffffff;
  box-shadow: var(--apb-shadow-sm);
}

.apb-btn-accent:hover,
.apb-btn-accent:focus {
  background-color: var(--apb-color-accent-hover);
  border-color: var(--apb-color-accent-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--apb-shadow-md);
}

/* 3. Size & Modifier Classes (Declared after .apb-btn to naturally override base padding/font-size) */
.apb-btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: var(--apb-font-size-xs);
  gap: var(--apb-space-1, 0.25rem);
}

.apb-btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: var(--apb-font-size-md);
}

.apb-btn-block {
  display: flex;
  width: 100%;
}

/* Category Badges */
.apb-category-badge {
  display: inline-block;
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--apb-color-primary);
  background-color: var(--apb-color-primary-light);
  padding: 0.25rem 0.65rem;
  border-radius: var(--apb-radius-full);
  transition: all var(--apb-transition-fast);
}

.apb-category-badge:hover {
  background-color: var(--apb-color-primary);
  color: #ffffff;
}

/* Social Media Icons */
.apb-social-list {
  display: flex;
  align-items: center;
  gap: var(--apb-space-2);
  flex-wrap: wrap;
}

.apb-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--apb-radius-full);
  background-color: var(--apb-color-bg-alt);
  color: var(--apb-color-heading);
  border: 1px solid var(--apb-color-border);
  transition: all var(--apb-transition-smooth);
}

.apb-social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

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

/* ==========================================================================
   4. Header & Navigation System (.apb-site-header)
   ========================================================================== */
.apb-site-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--apb-color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.03);
  width: 100%;
}

.apb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--apb-space-4);
  gap: var(--apb-space-4);
  min-width: 0;
  width: 100%;
}

.apb-site-branding {
  display: flex;
  flex-direction: column;
  flex-shrink: 1;
  min-width: 0;
}

.apb-site-title {
  font-family: var(--apb-font-sans);
  font-size: clamp(1.1rem, 3.8vw, 1.6rem);
  font-weight: var(--apb-font-weight-extrabold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--apb-color-heading);
  line-height: 1.15;
  margin: 0;
  overflow-wrap: break-word;
}

.apb-site-title a {
  color: inherit;
}

.apb-site-title a:hover {
  color: var(--apb-color-primary);
}

.apb-site-description,
.apb-site-tagline {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  font-weight: var(--apb-font-weight-medium);
  letter-spacing: 0.02em;
  margin-top: 2px;
  line-height: 1.3;
  margin-bottom: 0;
}

.apb-drawer-header,
.apb-drawer-footer {
  display: none;
}

.apb-primary-nav {
  display: flex;
  align-items: center;
  min-width: 0;
}

.apb-menu {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.8vw, 1.5rem);
}

.apb-menu-item {
  position: relative;
}

.apb-menu-link {
  font-family: var(--apb-font-sans);
  font-size: var(--apb-font-size-sm);
  font-weight: var(--apb-font-weight-semibold);
  color: var(--apb-color-heading);
  padding: var(--apb-space-2) 0;
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  transition: color var(--apb-transition-fast);
  white-space: nowrap;
}

.apb-menu-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--apb-color-primary);
  transition: width var(--apb-transition-base);
}

.apb-menu-link:hover,
.apb-menu-item.apb-current-menu-item>.apb-menu-link {
  color: var(--apb-color-primary);
}

.apb-menu-link:hover::after,
.apb-menu-item.apb-current-menu-item>.apb-menu-link::after {
  width: 100%;
}

.apb-caret-down,
.apb-caret-right {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  transition: transform var(--apb-transition-fast);
  flex-shrink: 0;
}

/* Multi-Level Submenus (Desktop) */
.apb-sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: #ffffff;
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-sm);
  box-shadow: var(--apb-shadow-dropdown);
  padding: var(--apb-space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--apb-transition-fast), transform var(--apb-transition-fast), visibility var(--apb-transition-fast);
  z-index: 200;
}

.apb-sub-menu .apb-sub-menu {
  top: -8px;
  left: 100%;
  transform: translateX(8px);
}

.apb-menu-item:hover>.apb-sub-menu,
.apb-menu-item:focus-within>.apb-sub-menu,
.apb-menu-item.apb-is-open>.apb-sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) translateX(0);
}

.apb-sub-menu .apb-menu-item {
  width: 100%;
}

.apb-sub-menu .apb-menu-link {
  padding: 0.65rem 1.25rem;
  font-size: var(--apb-font-size-sm);
  font-weight: var(--apb-font-weight-medium);
  color: var(--apb-color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  white-space: normal;
}

.apb-sub-menu .apb-menu-link::after {
  display: none;
}

.apb-sub-menu .apb-menu-link:hover,
.apb-sub-menu .apb-menu-item:hover>.apb-menu-link,
.apb-sub-menu .apb-menu-item:focus-within>.apb-menu-link {
  background-color: var(--apb-color-primary-light);
  color: var(--apb-color-primary);
}

/* Header Actions & Mini Cart */
.apb-header-actions {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1rem);
  flex-shrink: 0;
  min-width: 0;
}

.apb-header-socials {
  display: flex;
  align-items: center;
  gap: var(--apb-space-2);
}

.apb-cart-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.apb-cart-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--apb-radius-full);
  background-color: var(--apb-color-bg-alt);
  color: var(--apb-color-heading);
  border: 1px solid var(--apb-color-border);
  transition: all var(--apb-transition-fast);
}

.apb-cart-link svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.apb-cart-link:hover {
  background-color: var(--apb-color-primary);
  color: #ffffff;
  border-color: var(--apb-color-primary);
}

.apb-cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: var(--apb-radius-full);
  background-color: var(--apb-color-accent);
  color: #ffffff;
  font-family: var(--apb-font-sans);
  font-size: 0.6875rem;
  font-weight: var(--apb-font-weight-bold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  border: 2px solid #ffffff;
}

.apb-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1010;
  flex-shrink: 0;
}

.apb-nav-toggle-bar {
  width: 100%;
  height: 2.5px;
  background-color: var(--apb-color-heading);
  border-radius: 2px;
  transition: all var(--apb-transition-fast);
}

/* ==========================================================================
   Header Layout Preset Architectures (Layout 2, Layout 3, Layout 4)
   ========================================================================== */

/* --- Layout 2: Centered Prestige & Split Brand (.apb-header-preset-prestige) --- */
.apb-header-preset-prestige {
  padding: 0;
}

.apb-prestige-top-bar {
  padding: clamp(1.25rem, 2.5vw, 2rem) 0;
  text-align: center;
  border-bottom: 1px solid var(--apb-color-border);
  background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
}

.apb-prestige-brand-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.apb-prestige-logo {
  margin-bottom: var(--apb-space-2);
}

.apb-prestige-title {
  font-family: var(--apb-font-serif);
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  font-weight: var(--apb-font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
  line-height: 1.2;
}

.apb-prestige-title a {
  color: var(--apb-color-heading);
  text-decoration: none;
  transition: color var(--apb-transition-fast);
}

.apb-prestige-title a:hover {
  color: var(--apb-color-primary);
}

.apb-prestige-tagline {
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-semibold);
  color: var(--apb-color-accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: var(--apb-space-1) 0 0 0;
}

.apb-prestige-nav-bar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--apb-color-border);
  padding: var(--apb-space-1) 0;
}

.apb-prestige-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--apb-space-4);
  width: 100%;
}

.apb-prestige-socials {
  display: flex;
  align-items: center;
  gap: var(--apb-space-2);
  flex-shrink: 0;
}

.apb-prestige-nav {
  display: flex;
  justify-content: center;
  flex: 1 1 auto;
}

.apb-prestige-menu-list {
  justify-content: center;
  margin: 0 auto;
}

.apb-prestige-menu-list .apb-menu-link {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-semibold);
}

.apb-prestige-actions {
  display: flex;
  align-items: center;
  gap: var(--apb-space-3);
  flex-shrink: 0;
}

.apb-prestige-cta-btn {
  border-radius: var(--apb-radius-full);
  white-space: nowrap;
}

/* --- Layout 3: High-Converting Minimalist (.apb-header-preset-cta) --- */
.apb-cta-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--apb-space-3);
  gap: var(--apb-space-4);
  width: 100%;
}

.apb-monogram-brand-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.apb-monogram-brand {
  display: flex;
  align-items: center;
  gap: var(--apb-space-3);
  text-decoration: none;
}

.apb-monogram-circle {
  width: 44px;
  height: 44px;
  border-radius: var(--apb-radius-full);
  background: linear-gradient(135deg, var(--apb-color-primary), var(--apb-color-accent));
  color: #ffffff;
  font-family: var(--apb-font-serif);
  font-size: 1.25rem;
  font-weight: var(--apb-font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(13, 92, 99, 0.25);
  flex-shrink: 0;
}

.apb-monogram-text {
  display: flex;
  flex-direction: column;
}

.apb-monogram-title {
  font-family: var(--apb-font-sans);
  font-size: var(--apb-font-size-md);
  font-weight: var(--apb-font-weight-extrabold);
  color: var(--apb-color-heading);
  margin: 0;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.apb-monogram-brand:hover .apb-monogram-title {
  color: var(--apb-color-primary);
}

.apb-monogram-tagline {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  margin: 0;
  line-height: 1.2;
}

.apb-cta-nav {
  display: flex;
  align-items: center;
  justify-content: center;
}

.apb-cta-header-actions {
  display: flex;
  align-items: center;
  gap: var(--apb-space-3);
  flex-shrink: 0;
}

.apb-cta-highlight-btn {
  border-radius: var(--apb-radius-full);
  box-shadow: 0 2px 8px rgba(13, 92, 99, 0.25);
  white-space: nowrap;
}

.apb-header-search-link {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--apb-radius-full);
  background-color: var(--apb-color-bg-alt);
  color: var(--apb-color-heading);
  border: 1px solid var(--apb-color-border);
  transition: all var(--apb-transition-fast);
}

.apb-header-search-link:hover {
  background-color: var(--apb-color-primary);
  color: #ffffff;
  border-color: var(--apb-color-primary);
}

/* --- Layout 4: Top Bar Announcement + Clean Nav (.apb-header-preset-announcement) --- */
.apb-header-preset-announcement {
  padding: 0;
}

.apb-top-alert-bar {
  background: linear-gradient(90deg, #0d5c63 0%, #1e293b 100%);
  color: #ffffff;
  padding: 0.5rem 0;
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-medium);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.apb-top-alert-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--apb-space-2);
  text-align: center;
  flex-wrap: wrap;
}

.apb-alert-badge {
  background-color: var(--apb-color-accent);
  color: #ffffff;
  font-weight: var(--apb-font-weight-bold);
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--apb-radius-sm);
  font-size: 10px;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
}

.apb-alert-message {
  color: #ffffff;
}

.apb-alert-link {
  color: #ffffff;
  text-decoration: underline;
  font-weight: var(--apb-font-weight-bold);
  margin-left: 4px;
  transition: color var(--apb-transition-fast);
}

.apb-alert-link:hover {
  color: var(--apb-color-accent-light);
}

.apb-announcement-main-bar {
  padding-block: var(--apb-space-3);
  background-color: #ffffff;
}

.apb-announcement-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--apb-space-4);
  width: 100%;
}

.apb-announcement-right-group {
  display: flex;
  align-items: center;
  gap: var(--apb-space-4);
  flex-shrink: 0;
}

/* ==========================================================================
   5. Page Banner & Breadcrumbs (.apb-page-header)
   ========================================================================== */
.apb-page-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--apb-color-border);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  width: 100%;
}

.apb-page-header-inner {
  display: flex;
  flex-direction: column;
  gap: var(--apb-space-3);
  max-width: 860px;
}

.apb-breadcrumbs {
  display: flex;
  align-items: center;
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
}

.apb-breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--apb-space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.apb-breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: var(--apb-space-2);
}

.apb-breadcrumb-item a {
  color: var(--apb-color-text-muted);
  font-weight: var(--apb-font-weight-medium);
  transition: color var(--apb-transition-fast);
}

.apb-breadcrumb-item a:hover {
  color: var(--apb-color-primary);
  text-decoration: underline;
}

.apb-breadcrumb-separator {
  color: var(--apb-color-border-dark);
  user-select: none;
  font-size: 0.75rem;
}

.apb-breadcrumb-current {
  color: var(--apb-color-heading);
  font-weight: var(--apb-font-weight-semibold);
}

.apb-page-title {
  font-size: clamp(2rem, 4.5vw + 0.5rem, 3.25rem);
  font-family: var(--apb-font-serif);
  font-weight: var(--apb-font-weight-extrabold);
  line-height: 1.15;
  color: var(--apb-color-heading);
  margin: 0;
  overflow-wrap: break-word;
}

.apb-page-subtitle {
  font-size: var(--apb-font-size-md);
  color: var(--apb-color-text);
  line-height: var(--apb-line-height-base);
  margin: var(--apb-space-1) 0 0 0;
  max-width: 680px;
}

/* In-Page Search Refinement Form & Query Badges */
.apb-search-form {
  display: flex;
  align-items: center;
  gap: var(--apb-space-2);
  max-width: 540px;
  width: 100%;
  margin-top: var(--apb-space-2);
}

.apb-search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
}

.apb-search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--apb-color-border-dark);
  border-radius: var(--apb-radius-sm);
  background-color: var(--apb-color-bg-alt);
  color: var(--apb-color-heading);
  font-size: var(--apb-font-size-sm);
  transition: border-color var(--apb-transition-fast), box-shadow var(--apb-transition-fast), background-color var(--apb-transition-fast);
}

.apb-search-input:focus {
  outline: none;
  background-color: #ffffff;
  border-color: var(--apb-color-primary);
  box-shadow: 0 0 0 3px rgba(13, 92, 99, 0.15);
}

.apb-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--apb-color-text-muted);
  pointer-events: none;
}

.apb-results-count-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-semibold);
  color: var(--apb-color-primary);
  background-color: var(--apb-color-primary-light);
  padding: 0.3rem 0.75rem;
  border-radius: var(--apb-radius-full);
  margin-top: var(--apb-space-1);
}

/* No Results Empty State Card */
.apb-no-results {
  background-color: var(--apb-color-bg-card);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-md);
  padding: clamp(1.75rem, 5vw, 3rem);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--apb-space-4);
  box-shadow: var(--apb-shadow-sm);
}

.apb-no-results-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--apb-radius-full);
  background-color: var(--apb-color-accent-light);
  color: var(--apb-color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--apb-space-2);
}

.apb-no-results-icon svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
}

.apb-no-results-title {
  font-size: clamp(1.35rem, 2.5vw + 0.3rem, 1.85rem);
  font-family: var(--apb-font-serif);
  color: var(--apb-color-heading);
  margin: 0;
}

.apb-no-results-text,
.apb-no-results-desc {
  font-size: var(--apb-font-size-base);
  color: var(--apb-color-text);
  line-height: var(--apb-line-height-relaxed);
  max-width: 540px;
  margin: 0;
}

.apb-no-results .apb-search-form,
.apb-no-results-search .apb-search-form {
  margin-top: var(--apb-space-2);
  justify-content: center;
}

.apb-quick-topics,
.apb-popular-topics {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: var(--apb-space-2);
  margin-top: var(--apb-space-3);
}

.apb-popular-topics-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--apb-space-2);
}

.apb-quick-topics-label,
.apb-popular-topics-label {
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-bold);
  color: var(--apb-color-heading);
  margin-right: var(--apb-space-1);
}

/* Search Query Highlight Tags */
mark {
  background-color: #fef08a;
  color: #854d0e;
  padding: 0.1em 0.3em;
  border-radius: var(--apb-radius-xs);
  font-weight: 600;
}

/* Category & Topic Pills */
.apb-category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--apb-space-2);
  justify-content: center;
}

.apb-category-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--apb-space-2);
  padding: 0.4rem 0.95rem;
  background-color: var(--apb-color-bg-alt);
  color: var(--apb-color-heading);
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-medium);
  border-radius: var(--apb-radius-full);
  border: 1px solid var(--apb-color-border);
  transition: all var(--apb-transition-fast);
  text-decoration: none;
}

.apb-category-pill:hover {
  background-color: var(--apb-color-primary);
  color: #ffffff;
  border-color: var(--apb-color-primary);
  transform: translateY(-2px);
  box-shadow: var(--apb-shadow-sm);
}

/* ==========================================================================
   5b. 404 Error Page Component (.apb-404-section)
   ========================================================================== */
.apb-404-section {
  padding-block: clamp(3rem, 7vw, 6rem);
  width: 100%;
}

.apb-404-card {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--apb-color-bg-card);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-md);
  padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--apb-shadow-sm);
}

.apb-404-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--apb-color-accent);
  background-color: var(--apb-color-accent-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--apb-radius-full);
  margin-bottom: var(--apb-space-3);
}

.apb-404-code {
  font-family: var(--apb-font-serif);
  font-size: clamp(4.5rem, 12vw, 8.5rem);
  font-weight: var(--apb-font-weight-heavy);
  line-height: 1;
  color: var(--apb-color-primary);
  letter-spacing: -0.04em;
  margin: 0 0 var(--apb-space-2) 0;
  background: linear-gradient(135deg, var(--apb-color-primary) 0%, var(--apb-color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.apb-404-title {
  font-family: var(--apb-font-serif);
  font-size: clamp(1.5rem, 3vw + 0.5rem, 2.25rem);
  font-weight: var(--apb-font-weight-bold);
  color: var(--apb-color-heading);
  line-height: 1.25;
  margin: 0 0 var(--apb-space-4) 0;
}

.apb-404-desc {
  font-size: var(--apb-font-size-base);
  color: var(--apb-color-text);
  line-height: var(--apb-line-height-relaxed);
  max-width: 540px;
  margin: 0 0 var(--apb-space-6) 0;
}

.apb-404-search {
  width: 100%;
  max-width: 500px;
  margin-bottom: var(--apb-space-6);
}

.apb-404-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--apb-space-3);
  flex-wrap: wrap;
  margin-bottom: var(--apb-space-6);
}

/* ==========================================================================
   5c. Single Book Showcase Component (.apb-single-book-container)
   ========================================================================== */
.apb-single-book-container {
  padding-block: clamp(2rem, 4vw, 3.5rem);
  width: 100%;
}

.apb-single-book-spotlight {
  background-color: var(--apb-color-bg-card);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-md);
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--apb-shadow-sm);
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.apb-single-book-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 5vw, 3.75rem);
  align-items: start;
}

/* Left Column: 3D Cover & Actions */
.apb-book-media-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: sticky;
  top: 90px;
}

.apb-book-cover-frame {
  position: relative;
  width: 100%;
  max-width: 340px;
  margin-bottom: var(--apb-space-4);
}

.apb-book-cover-img {
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: var(--apb-radius-sm);
  box-shadow: -10px 15px 30px rgba(15, 23, 42, 0.22);
  transition: transform var(--apb-transition-smooth), box-shadow var(--apb-transition-smooth);
}

.apb-book-cover-frame:hover .apb-book-cover-img {
  transform: scale(1.02) rotate(-1deg);
  box-shadow: -14px 20px 36px rgba(15, 23, 42, 0.28);
}

.apb-book-badge-glossy {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--apb-color-accent);
  color: #ffffff;
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.85rem;
  border-radius: var(--apb-radius-full);
  box-shadow: var(--apb-shadow-sm);
  z-index: 2;
}

.apb-book-pricing-bar {
  width: 100%;
  max-width: 340px;
  background-color: var(--apb-color-bg-alt);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-sm);
  padding: 0.65rem 1rem;
  text-align: center;
  font-size: var(--apb-font-size-sm);
  font-weight: var(--apb-font-weight-semibold);
  color: var(--apb-color-heading);
  margin-bottom: var(--apb-space-4);
}

.apb-retailer-actions {
  display: flex;
  flex-direction: column;
  gap: var(--apb-space-2);
  width: 100%;
  max-width: 340px;
}

.apb-retailer-actions .apb-btn {
  width: 100%;
  justify-content: center;
}

.apb-secondary-retailers-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--apb-space-2);
  width: 100%;
}

.apb-secondary-retailers-grid .apb-btn {
  padding: 0.6rem 0.75rem;
  font-size: var(--apb-font-size-xs);
}

/* Right Column: Meta, Blurb & Praise */
.apb-book-details-column {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.apb-book-series-headline {
  font-size: var(--apb-font-size-xs);
  font-weight: var(--apb-font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--apb-color-accent);
  margin-bottom: var(--apb-space-1);
}

.apb-single-book-h1 {
  font-family: var(--apb-font-serif);
  font-size: clamp(1.85rem, 4vw + 0.3rem, 2.75rem);
  font-weight: var(--apb-font-weight-heavy);
  color: var(--apb-color-heading);
  line-height: 1.18;
  margin: 0 0 var(--apb-space-2) 0;
}

.apb-single-book-tagline {
  font-size: var(--apb-font-size-md);
  color: var(--apb-color-text-muted);
  line-height: 1.45;
  margin-bottom: var(--apb-space-4);
}

.apb-single-book-rating {
  display: flex;
  align-items: center;
  gap: var(--apb-space-2);
  padding-bottom: var(--apb-space-4);
  border-bottom: 1px solid var(--apb-color-border);
  margin-bottom: var(--apb-space-5);
  flex-wrap: wrap;
}

.apb-stars {
  color: var(--apb-color-accent, #e07a5f);
  font-size: var(--apb-font-size-base);
  letter-spacing: 0.1em;
}

.apb-sample-media-actions {
  display: flex;
  gap: var(--apb-space-2);
  flex-wrap: wrap;
  width: 100%;
}

.apb-sample-media-actions .apb-btn {
  flex: 1 1 calc(50% - var(--apb-space-2));
  font-size: var(--apb-font-size-xs);
  padding: 0.5rem 0.75rem;
  justify-content: center;
}

/* Full-Width Book Specifications Section */
.apb-book-specifications-section {
  background-color: var(--apb-color-bg-card);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-md, 12px);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--apb-shadow-sm);
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.apb-book-metadata-table,
.apb-book-specifications-section .apb-book-metadata-table {
  width: 100%;
  background-color: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  margin-bottom: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1.5rem;
}

.apb-meta-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.apb-meta-col-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--apb-color-text-muted);
}

.apb-meta-col-value {
  font-size: var(--apb-font-size-sm);
  font-weight: var(--apb-font-weight-semibold);
  color: var(--apb-color-heading);
  line-height: 1.4;
  word-break: break-word;
}

.apb-book-synopsis {
  font-size: var(--apb-font-size-base);
  color: var(--apb-color-text);
  line-height: var(--apb-line-height-relaxed);
  margin-bottom: var(--apb-space-6);
}

.apb-book-synopsis p {
  margin-bottom: var(--apb-space-4);
}

.apb-book-praise-pullquote {
  background-color: var(--apb-color-primary-light);
  border-left: 4px solid var(--apb-color-primary);
  border-radius: var(--apb-radius-sm);
  padding: 1.25rem 1.5rem;
  margin-bottom: var(--apb-space-6);
}

.apb-praise-quote-text {
  font-family: var(--apb-font-serif);
  font-size: var(--apb-font-size-md);
  font-style: italic;
  color: var(--apb-color-heading);
  line-height: 1.5;
  margin: 0 0 var(--apb-space-2) 0;
}

.apb-praise-citation {
  font-size: var(--apb-font-size-xs);
  font-weight: 700;
  color: var(--apb-color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Extended Sections (Sample, Editions, Reviews) */
.apb-book-extended-section {
  background-color: var(--apb-color-bg-card);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-md);
  padding: clamp(1.75rem, 5vw, 3rem);
  box-shadow: var(--apb-shadow-sm);
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.apb-extended-heading {
  font-family: var(--apb-font-serif);
  font-size: clamp(1.35rem, 2.5vw + 0.3rem, 1.85rem);
  color: var(--apb-color-heading);
  margin: 0 0 var(--apb-space-4) 0;
  padding-bottom: var(--apb-space-3);
  border-bottom: 2px solid var(--apb-color-bg-alt);
}

.apb-editions-comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--apb-space-4);
  margin-top: var(--apb-space-4);
}

.apb-edition-card {
  background-color: var(--apb-color-bg-alt);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-sm);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: var(--apb-space-2);
  transition: transform var(--apb-transition-smooth), border-color var(--apb-transition-smooth);
}

.apb-edition-card:hover {
  transform: translateY(-3px);
  border-color: var(--apb-color-primary);
}

.apb-edition-name {
  font-family: var(--apb-font-serif);
  font-size: var(--apb-font-size-md);
  font-weight: 700;
  color: var(--apb-color-heading);
  margin: 0;
}

.apb-edition-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--apb-color-primary);
}

.apb-edition-specs {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  line-height: 1.6;
}

.apb-reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--apb-space-4);
  margin-top: var(--apb-space-4);
}

.apb-review-card {
  background-color: var(--apb-color-bg-alt);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-sm);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: var(--apb-space-2);
}

.apb-review-rating {
  color: #f59e0b;
  font-size: var(--apb-font-size-sm);
}

.apb-review-text {
  font-size: var(--apb-font-size-sm);
  color: var(--apb-color-text);
  line-height: var(--apb-line-height-relaxed);
  font-style: italic;
}

.apb-review-author {
  font-size: var(--apb-font-size-xs);
  font-weight: 700;
  color: var(--apb-color-heading);
  margin-top: auto;
}

/* Books Grid & Card Shared Utilities */
.apb-books-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  width: 100%;
}

.apb-book-card {
  background-color: var(--apb-color-bg-card);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-md);
  overflow: hidden;
  padding: clamp(0.75rem, 2vw, 1rem);
  display: flex;
  flex-direction: column;
  box-shadow: var(--apb-shadow-sm);
  transition: all var(--apb-transition-smooth);
}

.apb-book-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--apb-shadow-card-hover);
  border-color: var(--apb-color-border-dark);
}

.apb-book-cover-wrap {
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: var(--apb-radius-sm);
  overflow: hidden;
  background-color: var(--apb-color-bg-alt);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  margin-bottom: var(--apb-space-4);
}

.apb-book-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--apb-transition-smooth);
}

.apb-book-card:hover .apb-book-cover {
  transform: scale(1.04);
}

.apb-book-info {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.apb-book-title {
  font-family: var(--apb-font-serif);
  font-size: var(--apb-font-size-md);
  font-weight: var(--apb-font-weight-bold);
  color: var(--apb-color-heading);
  line-height: 1.3;
  margin-bottom: var(--apb-space-1);
}

.apb-book-title a {
  color: inherit;
}

.apb-book-title a:hover {
  color: var(--apb-color-primary);
}

.apb-book-author {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  margin-bottom: var(--apb-space-3);
}

.apb-book-price {
  font-family: var(--apb-font-sans);
  font-size: var(--apb-font-size-base);
  font-weight: var(--apb-font-weight-bold);
  color: var(--apb-color-price);
}

/* CTA Newsletter Banner */
.apb-cta-section {
  padding-block: var(--apb-section-spacing);
  background-color: var(--apb-color-primary);
  color: #ffffff;
  position: relative;
  width: 100%;
  overflow: hidden;
}

.apb-cta-card {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: center;
  width: 100%;
}

.apb-cta-content {
  display: flex;
  flex-direction: column;
  gap: var(--apb-space-4);
}

.apb-cta-title {
  font-size: clamp(1.45rem, 3.5vw + 0.3rem, 2.25rem);
  font-family: var(--apb-font-serif);
  color: #ffffff;
  line-height: 1.22;
  margin: 0;
}

.apb-cta-subtitle {
  font-size: var(--apb-font-size-base);
  color: rgba(255, 255, 255, 0.85);
  line-height: var(--apb-line-height-relaxed);
  max-width: 580px;
  margin: 0;
}

.apb-cta-form {
  display: flex;
  align-items: stretch;
  gap: var(--apb-space-2);
  margin-top: var(--apb-space-2);
  max-width: 520px;
  width: 100%;
}

.apb-cta-input {
  flex: 1;
  min-width: 0;
  padding: 0.85rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--apb-radius-sm);
  background-color: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-size: var(--apb-font-size-sm);
  transition: all var(--apb-transition-fast);
}

.apb-cta-input::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.apb-cta-input:focus {
  outline: none;
  background-color: #ffffff;
  color: var(--apb-color-heading);
  box-shadow: 0 0 0 3px rgba(224, 122, 95, 0.5);
}

.apb-cta-image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.apb-cta-mockup {
  max-width: min(220px, 80%);
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  border-radius: var(--apb-radius-sm);
  box-shadow: -10px 10px 25px rgba(0, 0, 0, 0.35);
  transform: rotate(-3deg);
  transition: transform var(--apb-transition-smooth);
}

.apb-cta-card:hover .apb-cta-mockup {
  transform: rotate(0deg) scale(1.02);
}

@media (max-width: 860px) {
  .apb-single-book-grid {
    grid-template-columns: 1fr;
  }

  .apb-book-media-column {
    position: static;
  }

  .apb-cta-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .apb-cta-content {
    align-items: center;
  }

  .apb-cta-form {
    flex-direction: column;
    max-width: 100%;
  }

  .apb-books-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .apb-books-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   6. Site Footer (.apb-site-footer & .apb-footer-widget-area)
   ========================================================================== */
.apb-site-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--apb-color-border);
  padding-block: var(--apb-space-10) var(--apb-space-8);
  width: 100%;
}

/* Footer Widget Columns Area (4-Column Legacy Grid) */
.apb-footer-widget-area {
  padding-bottom: var(--apb-space-10);
  margin-bottom: var(--apb-space-8);
  border-bottom: 1px solid var(--apb-color-border);
  width: 100%;
}

.apb-footer-widgets-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem;
  align-items: start;
  width: 100%;
}

/* Flexible distribution when fewer than 4 columns are active */
.apb-footer-widgets-grid:has(> .apb-footer-column:only-child) {
  grid-template-columns: 1fr;
}

.apb-footer-widgets-grid:has(> .apb-footer-column:nth-last-child(2):first-child),
.apb-footer-widgets-grid:has(> .apb-footer-column:nth-last-child(2):first-child ~ .apb-footer-column) {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.apb-footer-widgets-grid:has(> .apb-footer-column:nth-last-child(3):first-child),
.apb-footer-widgets-grid:has(> .apb-footer-column:nth-last-child(3):first-child ~ .apb-footer-column) {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.apb-footer-column {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  min-width: 0;
  width: 100%;
}

/* Footer Individual Widget Containment */
.apb-footer-widget {
  min-width: 0;
  width: 100%;
  font-family: var(--apb-font-sans);
  font-size: var(--apb-font-size-sm);
  color: var(--apb-color-text);
  line-height: var(--apb-line-height-base);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* Defensive Widget Titles */
.apb-footer-widget .apb-widget-title,
.apb-footer-widget .widget-title,
.apb-footer-widget h2,
.apb-footer-widget h3,
.apb-footer-widget h4 {
  font-family: var(--apb-font-serif);
  font-size: var(--apb-font-size-lg);
  font-weight: 700;
  line-height: 1.35;
  color: var(--apb-color-heading);
  margin-top: 0;
  margin-bottom: var(--apb-space-4);
  padding-bottom: var(--apb-space-2);
  position: relative;
  letter-spacing: -0.01em;
  border-bottom: 2px solid var(--apb-color-border);
}

.apb-footer-widget .apb-widget-title::after,
.apb-footer-widget .widget-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 32px;
  height: 2px;
  background-color: var(--apb-color-primary);
}

/* Lists & Navigation Menus inside Footer Widgets */
.apb-footer-widget ul,
.apb-footer-widget ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

.apb-footer-widget li {
  padding: 0.4rem 0;
  line-height: 1.5;
  border-bottom: 1px dashed var(--apb-color-border);
}

.apb-footer-widget li:last-child {
  border-bottom: none;
}

.apb-footer-widget ul ul,
.apb-footer-widget ol ol {
  padding-left: 1rem;
  margin-top: 0.35rem;
}

.apb-footer-widget a {
  color: var(--apb-color-text);
  text-decoration: none;
  transition: color var(--apb-transition-fast);
}

.apb-footer-widget a:hover,
.apb-footer-widget a:focus {
  color: var(--apb-color-primary);
  text-decoration: underline;
}

/* Search & Form Elements */
.apb-footer-widget .search-form,
.apb-footer-widget .wp-block-search {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

.apb-footer-widget .search-form label,
.apb-footer-widget .wp-block-search__label {
  display: block;
  font-weight: 600;
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-heading);
  margin-bottom: 0.5rem;
}

.apb-footer-widget .wp-block-search__inside-wrapper {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.apb-footer-widget input[type="text"],
.apb-footer-widget input[type="search"],
.apb-footer-widget input[type="email"],
.apb-footer-widget input[type="url"],
.apb-footer-widget select,
.apb-footer-widget textarea {
  width: 100%;
  max-width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-sm);
  background-color: #ffffff;
  color: var(--apb-color-text);
  font-size: var(--apb-font-size-sm);
  box-sizing: border-box;
  transition: border-color var(--apb-transition-fast), box-shadow var(--apb-transition-fast);
}

.apb-footer-widget input:focus,
.apb-footer-widget select:focus,
.apb-footer-widget textarea:focus {
  border-color: var(--apb-color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 92, 99, 0.12);
}

.apb-footer-widget button,
.apb-footer-widget input[type="submit"],
.apb-footer-widget .wp-block-search__button {
  background-color: var(--apb-color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--apb-radius-sm);
  padding: 0.625rem 1.25rem;
  font-weight: 600;
  font-size: var(--apb-font-size-sm);
  cursor: pointer;
  transition: background-color var(--apb-transition-fast);
  flex-shrink: 0;
}

.apb-footer-widget button:hover,
.apb-footer-widget input[type="submit"]:hover,
.apb-footer-widget .wp-block-search__button:hover {
  background-color: var(--apb-color-primary-dark, #094348);
}

/* Images & Media Safeguards */
.apb-footer-widget img,
.apb-footer-widget video,
.apb-footer-widget iframe,
.apb-footer-widget svg,
.apb-footer-widget .wp-block-image img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--apb-radius-sm);
}

.apb-footer-widget figure {
  margin: 0 0 1rem 0;
  max-width: 100%;
}

.apb-footer-widget figcaption {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  text-align: center;
  margin-top: 0.35rem;
}

/* Calendar & Tables */
.apb-footer-widget table,
.apb-footer-widget .wp-block-calendar table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--apb-font-size-xs);
  margin-bottom: 0.5rem;
}

.apb-footer-widget td {
  padding: 0.4rem 0.35rem;
  text-align: center;
  border: 1px solid var(--apb-color-border);
}

.apb-footer-widget th {
  padding: 0.4rem 0.35rem;
  text-align: center;
  border: 1px solid var(--apb-color-border);
  background-color: var(--apb-color-bg-body);
  font-weight: 700;
  color: var(--apb-color-heading);
}

.apb-footer-widget .wp-block-calendar nav {
  display: flex;
  justify-content: space-between;
  font-size: var(--apb-font-size-xs);
  padding-top: 0.5rem;
}

/* Block Groups, Columns & Latest Posts */
.apb-footer-widget .wp-block-group,
.apb-footer-widget .wp-block-columns {
  max-width: 100%;
  box-sizing: border-box;
}

.apb-footer-widget .wp-block-latest-posts li,
.apb-footer-widget .widget_recent_entries li {
  margin-bottom: 0.75rem;
  border-bottom: 1px dashed var(--apb-color-border);
  padding-bottom: 0.5rem;
}

.apb-footer-widget .wp-block-latest-posts__post-title {
  font-weight: 600;
  color: var(--apb-color-heading);
}

.apb-footer-widget .wp-block-latest-posts__post-date,
.apb-footer-widget .post-date {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  display: block;
  margin-top: 0.2rem;
}

/* Tag Clouds & Category Badges */
.apb-footer-widget .tagcloud,
.apb-footer-widget .wp-block-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.apb-footer-widget .tagcloud a,
.apb-footer-widget .wp-block-tag-cloud a {
  display: inline-block;
  font-size: var(--apb-font-size-xs);
  padding: 0.25rem 0.6rem;
  background-color: var(--apb-color-bg-body);
  border: 1px solid var(--apb-color-border);
  border-radius: var(--apb-radius-sm);
  color: var(--apb-color-text);
  text-decoration: none;
  transition: all var(--apb-transition-fast);
}

.apb-footer-widget .tagcloud a:hover,
.apb-footer-widget .wp-block-tag-cloud a:hover {
  background-color: var(--apb-color-primary);
  color: #ffffff;
  border-color: var(--apb-color-primary);
  text-decoration: none;
}

/* Responsive Footer Widgets Grid Breakpoints */
@media (max-width: 1024px) {
  .apb-footer-widgets-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

@media (max-width: 640px) {
  .apb-footer-widgets-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Footer Bottom Bar (.apb-footer-inner) */
.apb-footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--apb-space-6);
}

.apb-footer-socials .apb-social-list {
  justify-content: center;
}

.apb-footer-navigation {
  width: 100%;
}

.apb-footer-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(1rem, 3vw, 2rem);
}

.apb-footer-menu a {
  font-size: var(--apb-font-size-sm);
  font-weight: var(--apb-font-weight-medium);
  color: var(--apb-color-text);
  transition: color var(--apb-transition-fast);
}

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

.apb-footer-copyright {
  font-size: var(--apb-font-size-xs);
  color: var(--apb-color-text-muted);
  margin: 0;
}

/* ==========================================================================
   7. Responsive Rules for Global Elements
   ========================================================================== */
@media (min-width: 768px) and (max-width: 1024px) {
  body:not(.apb-no-sidebar):not(.layout-no-sidebar) .apb-content-layout:not(.apb-layout-no-sidebar) {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1.15fr);
    gap: clamp(1rem, 2vw, 1.75rem);
  }

  body.apb-sidebar-left .apb-content-layout:not(.apb-layout-no-sidebar),
  body.layout-left-sidebar .apb-content-layout:not(.apb-layout-no-sidebar),
  .apb-content-layout.apb-layout-left-sidebar {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.75fr);
  }
}

@media (max-width: 860px) {
  .apb-nav-toggle {
    display: flex;
  }

  .apb-header-actions .apb-header-socials,
  .apb-prestige-socials,
  .apb-announcement-socials {
    display: none;
  }

  .apb-prestige-top-bar {
    padding: clamp(1rem, 2vw, 1.25rem) 0;
  }

  .apb-prestige-nav-inner {
    justify-content: flex-end;
  }

  .apb-prestige-actions {
    width: 100%;
    justify-content: space-between;
  }

  .apb-cta-nav {
    display: none;
  }

  .apb-top-alert-bar {
    padding: 0.4rem 0;
    font-size: 11px;
  }

  /* Off-Canvas Navigation Drawer */
  .apb-primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    background-color: #ffffff;
    box-shadow: -8px 0 28px rgba(15, 23, 42, 0.2);
    display: flex;
    flex-direction: column;
    z-index: 2000;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    padding: 0;
  }

  .apb-primary-nav.apb-nav-active {
    transform: translateX(0);
  }

  .apb-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--apb-color-border);
    background-color: #ffffff;
    flex-shrink: 0;
  }

  .apb-drawer-title {
    font-family: var(--apb-font-sans);
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--apb-color-heading);
  }

  .apb-drawer-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--apb-radius-full);
    background: var(--apb-color-bg-alt);
    color: var(--apb-color-heading);
    border: 1px solid var(--apb-color-border);
    cursor: pointer;
    transition: all var(--apb-transition-fast);
  }

  .apb-drawer-close svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
  }

  .apb-drawer-close:hover {
    background-color: var(--apb-color-accent);
    color: #ffffff;
    border-color: var(--apb-color-accent);
  }

  .apb-menu {
    flex: 1 1 auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .apb-menu-item {
    width: 100%;
    border-bottom: 1px solid var(--apb-color-bg-alt);
  }

  .apb-menu-link {
    width: 100%;
    padding: 0.9rem 0;
    font-size: 0.95rem;
    justify-content: space-between;
    white-space: normal;
  }

  .apb-sub-menu,
  .apb-sub-menu .apb-sub-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--apb-color-primary-light);
    padding-left: 0.75rem;
    padding-block: 0.25rem;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    background-color: var(--apb-color-bg-body);
    width: 100%;
    min-width: 100%;
  }

  .apb-menu-item.apb-dropdown-open>.apb-sub-menu {
    display: block;
  }

  .apb-sub-menu .apb-menu-link {
    padding: 0.65rem 0.5rem;
    font-size: 0.875rem;
  }

  .apb-drawer-footer {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--apb-color-border);
    background-color: var(--apb-color-bg-alt);
    margin-top: auto;
    flex-shrink: 0;
  }

  .apb-drawer-socials-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--apb-color-text-muted);
    margin: 0;
  }

  .apb-drawer-social-list {
    display: flex;
    align-items: center;
    gap: var(--apb-space-2);
  }

  .apb-nav-toggle.apb-is-active .apb-nav-toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .apb-nav-toggle.apb-is-active .apb-nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .apb-nav-toggle.apb-is-active .apb-nav-toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

@media (max-width: 767px) {
  .apb-content-layout {
    grid-template-columns: 1fr;
    gap: var(--apb-space-8);
  }

  .apb-page-header {
    padding-block: clamp(1.5rem, 4vw, 2.5rem);
  }
}

@media (max-width: 480px) {
  .apb-header-inner {
    padding-block: var(--apb-space-3);
  }

  .apb-site-title {
    font-size: clamp(1.05rem, 5vw, 1.35rem);
  }

  .apb-breadcrumb-list {
    gap: 4px;
  }
}

@media (max-width: 360px) {
  .apb-site-tagline {
    display: none;
  }
}

/* ==========================================================================
   8. Floating Scroll to Top Button (.apb-scroll-to-top)
   ========================================================================== */
.apb-scroll-to-top,
#apb-scroll-top {
  position: fixed;
  bottom: clamp(1.25rem, 3vw, 2rem);
  right: clamp(1.25rem, 3vw, 2rem);
  z-index: 999;
  width: 46px;
  height: 46px;
  border-radius: var(--apb-radius-full, 9999px);
  background-color: var(--apb-color-primary, #0d5c63);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  box-shadow: var(--apb-shadow-md, 0 4px 12px rgba(0, 0, 0, 0.15));
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
  transition: opacity var(--apb-transition-normal, 0.3s ease),
    transform var(--apb-transition-normal, 0.3s ease),
    background-color var(--apb-transition-fast, 0.2s ease),
    box-shadow var(--apb-transition-fast, 0.2s ease);
}

.apb-scroll-to-top.is-visible,
#apb-scroll-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.apb-scroll-to-top:hover,
#apb-scroll-top:hover {
  background-color: var(--apb-color-accent, #e07a5f);
  transform: translateY(-3px);
  box-shadow: var(--apb-shadow-lg, 0 8px 24px rgba(0, 0, 0, 0.2));
  color: #ffffff;
}

.apb-scroll-to-top:focus-visible,
#apb-scroll-top:focus-visible {
  outline: 2px solid var(--apb-color-accent, #e07a5f);
  outline-offset: 3px;
  background-color: var(--apb-color-accent, #e07a5f);
}

.apb-scroll-to-top svg,
#apb-scroll-top svg {
  display: block;
  stroke: currentColor;
  transition: transform var(--apb-transition-fast, 0.2s ease);
}

.apb-scroll-to-top:hover svg,
#apb-scroll-top:hover svg {
  transform: translateY(-2px);
}