/*
Theme Name: Apple Newsroom Blog
Theme URI: https://apple.com/newsroom
Author: Antigravity Studio
Author URI: https://apple.com
Description: Giao diện WordPress cao cấp phong cách Apple.com dành cho Blog công nghệ, sáng tạo, đời sống số. Tối ưu SEO, hỗ trợ Dark/Light mode, hiệu ứng kính mờ Glassmorphism, typography chuẩn SF Pro và chuẩn chỉnh cho trải nghiệm đọc tinh tế.
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: apple-blog
Tags: blog, tech, apple-style, dark-mode, responsive-layout, featured-images, translation-ready
*/

/* ==========================================================================
   1. DESIGN TOKENS & CSS VARIABLES (APPLE DESIGN SYSTEM)
   ========================================================================== */
:root {
  /* Apple Light Mode Palette */
  --bg-body: #f5f5f7;
  --bg-surface: #ffffff;
  --bg-surface-translucent: rgba(255, 255, 255, 0.8);
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-secondary: #e8e8ed;
  --bg-input: rgba(0, 0, 0, 0.04);
  
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --text-inverse: #ffffff;

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.14);
  
  --accent-color: #0071e3;
  --accent-hover: #0077ed;
  --accent-gradient: linear-gradient(135deg, #0071e3 0%, #47a6ff 100%);
  --accent-purple: #af52de;
  --accent-orange: #ff9500;
  --badge-bg: rgba(0, 113, 227, 0.08);
  --badge-text: #0071e3;

  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.09);
  --shadow-card-hover: 0 24px 60px rgba(0, 0, 0, 0.12);

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 980px;

  --nav-height: 64px;
  --container-max: 1200px;
  --container-narrow: 840px;

  --ease-apple: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease-apple);
  --transition-smooth: 0.35s var(--ease-apple);
  --transition-slow: 0.6s var(--ease-apple);
}

/* Apple Dark Mode Palette */
[data-theme="dark"] {
  --bg-body: #000000;
  --bg-surface: #161617;
  --bg-surface-translucent: rgba(22, 22, 23, 0.8);
  --bg-card: #161617;
  --bg-card-hover: #1c1c1e;
  --bg-secondary: #2c2c2e;
  --bg-input: rgba(255, 255, 255, 0.08);
  
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --text-inverse: #000000;

  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-medium: rgba(255, 255, 255, 0.2);

  --accent-color: #2997ff;
  --accent-hover: #52aaff;
  --accent-gradient: linear-gradient(135deg, #2997ff 0%, #70b8ff 100%);
  --badge-bg: rgba(41, 151, 255, 0.15);
  --badge-text: #2997ff;

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.7);
  --shadow-card-hover: 0 30px 70px rgba(0, 0, 0, 0.85);
}

/* ==========================================================================
   2. RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

button, input, textarea, select {
  font-family: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

.apple-container {
  width: 90%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.apple-container-narrow {
  width: 90%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================================
   3. APPLE NAVIGATION HEADER
   ========================================================================== */
#apple-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent-gradient);
  z-index: 1001;
  transition: width 0.1s linear;
}

.apple-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--bg-surface-translucent);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

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

.apple-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.apple-brand-icon {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.apple-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.apple-nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.apple-nav-list a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.apple-nav-list a:hover,
.apple-nav-list .current-menu-item > a {
  color: var(--text-primary);
}

.apple-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.apple-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.apple-btn-icon:hover {
  background: var(--bg-secondary);
  transform: scale(1.05);
}

.apple-btn-icon svg {
  width: 17px;
  height: 17px;
}

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

/* ==========================================================================
   4. APPLE SEARCH MODAL
   ========================================================================== */
.apple-search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 120px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.apple-search-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.apple-search-box {
  width: 90%;
  max-width: 640px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  transform: translateY(-20px) scale(0.98);
  transition: transform var(--transition-smooth);
}

.apple-search-modal.active .apple-search-box {
  transform: translateY(0) scale(1);
}

.apple-search-form {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-input);
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  border: 1px solid var(--border-subtle);
}

.apple-search-form input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.apple-search-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--text-tertiary);
}

/* ==========================================================================
   5. HERO & BANNER SECTION (APPLE NEWSROOM STYLE)
   ========================================================================== */
.apple-hero {
  padding: 60px 0 30px;
  text-align: center;
}

.apple-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-color);
  margin-bottom: 14px;
  background: var(--badge-bg);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.apple-hero-title {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.apple-hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 400;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
  letter-spacing: -0.01em;
}

/* Filter Pills */
.apple-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.apple-filter-pill {
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.apple-filter-pill:hover,
.apple-filter-pill.active {
  background: var(--text-primary);
  color: var(--text-inverse);
  border-color: var(--text-primary);
  transform: translateY(-1px);
}

/* ==========================================================================
   6. BENTO GRID & POST CARDS
   ========================================================================== */
.apple-posts-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}

/* Featured Big Card (Spans 12 columns) */
.apple-card-featured {
  grid-column: span 12;
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-smooth);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  min-height: 480px;
}

.apple-card-featured:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-medium);
}

.apple-featured-media {
  position: relative;
  overflow: hidden;
  height: 100%;
}

.apple-featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.apple-card-featured:hover .apple-featured-media img {
  transform: scale(1.035);
}

.apple-featured-content {
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--bg-card);
}

.apple-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-color);
  background: var(--badge-bg);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  width: fit-content;
  margin-bottom: 16px;
}

.apple-featured-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.apple-featured-excerpt {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.apple-post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-top: auto;
}

.apple-author-thumb {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.apple-dot-separator {
  opacity: 0.4;
}

/* Secondary Bento Cards (Spans 6 columns or 4 columns) */
.apple-card-medium {
  grid-column: span 6;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.apple-card-medium:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-medium);
}

.apple-card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-secondary);
}

.apple-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.apple-card-medium:hover .apple-card-media img {
  transform: scale(1.04);
}

.apple-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.apple-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.apple-card-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.apple-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-color);
  transition: gap var(--transition-fast);
}

.apple-read-more:hover {
  gap: 10px;
  color: var(--accent-hover);
}

.apple-read-more svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.apple-read-more:hover svg {
  transform: translateX(3px);
}

/* ==========================================================================
   7. PAGINATION (APPLE PILL STYLE)
   ========================================================================== */
.apple-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 40px 0 80px;
}

.apple-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.apple-pagination .page-numbers:hover,
.apple-pagination .page-numbers.current {
  background: var(--text-primary);
  color: var(--text-inverse);
  border-color: var(--text-primary);
}

/* ==========================================================================
   8. SINGLE POST VIEW (EDITORIAL MAGAZINE)
   ========================================================================== */
.apple-single-article {
  padding: 40px 0 80px;
}

.apple-single-header {
  text-align: center;
  max-width: 860px;
  margin: 0 auto 36px;
}

.apple-single-title {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 16px 0 24px;
  color: var(--text-primary);
}

.apple-single-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.apple-single-meta .author-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text-primary);
}

.apple-single-meta img.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.apple-single-hero-media {
  max-width: 1100px;
  margin: 0 auto 48px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.apple-single-hero-media img {
  width: 100%;
  max-height: 640px;
  object-fit: cover;
}

/* Article Typography (Apple Clean Prose) */
.apple-prose {
  font-size: 1.18rem;
  line-height: 1.8;
  color: var(--text-primary);
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.apple-prose p {
  margin-bottom: 28px;
}

.apple-prose h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 48px 0 20px;
  line-height: 1.25;
}

.apple-prose h3 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 36px 0 16px;
  line-height: 1.3;
}

.apple-prose blockquote {
  position: relative;
  margin: 40px 0;
  padding: 24px 32px;
  background: var(--bg-surface);
  border-left: 4px solid var(--accent-color);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 1.25rem;
  font-style: italic;
  font-weight: 400;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.apple-prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-input);
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}

.apple-prose pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin: 32px 0;
  box-shadow: var(--shadow-sm);
}

.apple-prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.92rem;
}

.apple-prose ul, .apple-prose ol {
  margin: 0 0 28px 24px;
}

.apple-prose li {
  margin-bottom: 10px;
}

/* Post Tags & Share Bar */
.apple-post-footer {
  max-width: var(--container-narrow);
  margin: 50px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.apple-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.apple-tag-pill {
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.apple-tag-pill:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.apple-share-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.apple-share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

.apple-share-btn svg {
  width: 16px;
  height: 16px;
}

/* Author Bio Card */
.apple-author-card {
  max-width: var(--container-narrow);
  margin: 40px auto 0;
  padding: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 24px;
}

.apple-author-card img {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-subtle);
}

.apple-author-info h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.apple-author-info p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Post Comments */
.apple-comments-area {
  max-width: var(--container-narrow);
  margin: 60px auto 0;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
}

.apple-comments-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.comment-list {
  list-style: none;
  margin-bottom: 48px;
}

.comment-list .comment {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.comment-meta .fn {
  font-weight: 600;
  font-style: normal;
}

.comment-meta .comment-metadata a {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

.comment-content {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Comment Form */
#respond {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

#reply-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.comment-form p {
  margin-bottom: 16px;
}

.comment-form label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  outline: none;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.comment-form input:focus,
.comment-form textarea:focus {
  border-color: var(--accent-color);
}

.comment-form input[type="submit"] {
  display: inline-block;
  background: var(--accent-color);
  color: #ffffff;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.comment-form input[type="submit"]:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* ==========================================================================
   9. FOOTER SECTION (APPLE CLEAN TIERS)
   ========================================================================== */
.apple-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-top: 60px;
}

.apple-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  margin-bottom: 48px;
}

.apple-footer-col h5 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.apple-footer-col ul {
  list-style: none;
}

.apple-footer-col li {
  margin-bottom: 10px;
}

.apple-footer-col a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.apple-footer-col a:hover {
  color: var(--text-primary);
}

.apple-footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.apple-footer-legal a {
  margin-left: 14px;
  color: var(--text-tertiary);
}

.apple-footer-legal a:hover {
  color: var(--text-secondary);
}

/* Back to Top Pill */
.apple-back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-smooth);
  z-index: 900;
}

.apple-back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.apple-back-to-top:hover {
  transform: translateY(-3px);
  background: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
}

/* Toast Notification */
.apple-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text-primary);
  color: var(--text-inverse);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-smooth);
  z-index: 2500;
}

.apple-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   10. RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 992px) {
  .apple-card-featured {
    grid-template-columns: 1fr;
  }
  .apple-card-medium {
    grid-column: span 12;
  }
  .apple-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .apple-nav-list {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-120%);
    transition: transform var(--transition-smooth);
    box-shadow: var(--shadow-lg);
  }

  .apple-nav-list.active {
    transform: translateY(0);
  }

  .apple-mobile-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .apple-featured-content {
    padding: 28px;
  }

  .apple-footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .apple-footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}