/*
Theme Name: WhatInfoTech Custom
Theme URI: https://whatinfotech.com
Author: WhatInfoTech Team
Author URI: https://whatinfotech.com
Description: A mobile-first, high-performance custom WordPress theme with perfect image responsiveness & developer tools.
Version: 7.0.0
License: GNU General Public License v2 or later
Text Domain: whatinfotech-theme
*/

/* ==========================================================================
   1. Design Tokens & CSS Variables
   ========================================================================== */
:root {
  /* Brand Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;

  /* Color System */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-accent: #06b6d4;
  --color-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --color-gradient-glow: linear-gradient(135deg, rgba(99,102,241,0.15) 0%, rgba(6,182,212,0.15) 100%);
  --color-shimmer: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0) 100%);

  /* Default Dark Theme (Theme Default) */
  --color-bg: #0b0f19;
  --color-surface: #111827;
  --color-surface-hover: #1f2937;
  --color-text: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.12);

  /* Glassmorphism & Elevation */
  --glass-bg: rgba(17, 24, 39, 0.94);
  --glass-border: rgba(255, 255, 255, 0.12);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 40px -10px rgba(99, 102, 241, 0.3);
  --shadow-neon: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 35px rgba(99, 102, 241, 0.35);

  /* Radius System */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light Mode Overrides — Triggered via Toggle Button */
html.light-mode {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --glass-bg: rgba(255, 255, 255, 0.94);
  --glass-border: rgba(226, 232, 240, 0.8);
  --shadow-neon: 0 20px 50px rgba(15, 23, 42, 0.12), 0 0 30px rgba(99, 102, 241, 0.18);
}

/* ==========================================================================
   2. Reset & Image Responsiveness (Fixes Cropping on Mobile)
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}

/* Fluid Responsive Image System — No Cropping on Mobile */
img, video, iframe {
  max-width: 100% !important;
  height: auto !important;
  display: block;
}

article img, .entry-content img, .single-post-content img {
  max-width: 100% !important;
  height: auto !important;
  object-fit: contain !important;
  border-radius: var(--radius-md);
  margin: 1.5rem auto;
}

.post-card-thumb {
  width: 100%;
  height: 200px;
  background: var(--color-surface-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.post-card-thumb img {
  max-width: 100% !important;
  max-height: 100% !important;
  width: auto !important;
  height: auto !important;
  object-fit: contain !important;
  object-position: center !important;
  margin: 0 auto !important;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (max-width: 768px) {
  .post-card-thumb {
    height: 180px;
  }
}

.post-card:hover .post-card-thumb img {
  transform: scale(1.04);
}

.post-featured-image {
  width: 100%;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-hover);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
}

.post-featured-image img {
  max-width: 100% !important;
  height: auto !important;
  max-height: 480px !important;
  object-fit: contain !important;
  margin: 0 auto !important;
}

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

a:hover {
  color: var(--color-primary-dark);
}

pre, code {
  max-width: 100%;
  overflow-x: auto;
  font-family: var(--font-mono);
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: #ffffff !important;
  padding: 0.75rem 1.25rem;
  z-index: 9999;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 3px solid var(--color-primary) !important;
  outline-offset: 2px !important;
}

/* ==========================================================================
   3. Tech Pillar Animations & Synapse Nodes
   ========================================================================== */
.synapse-node {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #6366f1;
  box-shadow: 0 0 12px #6366f1, 0 0 25px #06b6d4;
  animation: pulseNode 3s infinite ease-in-out;
}

.synapse-node.central {
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  box-shadow: 0 0 20px rgba(99,102,241,0.6);
  animation: floatLevitate 4s ease-in-out infinite;
}

@keyframes pulseNode {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 1; box-shadow: 0 0 20px #06b6d4; }
}

.cyber-shield-ring {
  width: 90px;
  height: 90px;
  border: 2px dashed #06b6d4;
  border-radius: 50%;
  position: absolute;
  animation: rotateShield 10s linear infinite;
}

.cyber-shield-icon {
  font-size: 2.5rem;
  z-index: 2;
  animation: pulseGlow 2.5s infinite;
}

.binary-stream {
  position: absolute;
  bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #06b6d4;
  letter-spacing: 2px;
  opacity: 0.8;
  animation: streamText 2s linear infinite;
}

@keyframes rotateShield {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes streamText {
  0% { opacity: 0.3; }
  50% { opacity: 1; }
  100% { opacity: 0.3; }
}

.java-thread-bar {
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
  height: 24px;
  display: flex;
  align-items: center;
}

.java-thread-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #ef4444);
  color: #fff;
  font-size: 0.7rem;
  line-height: 24px;
  padding-left: 8px;
  font-weight: 600;
  border-radius: 4px;
  animation: threadPulse 2s ease-in-out infinite alternate;
}

@keyframes threadPulse {
  0% { filter: brightness(1); }
  100% { filter: brightness(1.3); box-shadow: 0 0 10px rgba(245,158,11,0.5); }
}

/* Command Palette Items */
.cmd-k-item {
  display: block;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition-fast);
  text-decoration: none;
}

.cmd-k-item:hover {
  background: var(--color-gradient-glow);
  color: var(--color-primary);
  transform: translateX(4px);
}

/* Keyframe Animations */
@keyframes floatLevitate {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(0.5deg); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 15px rgba(99, 102, 241, 0.2); }
  50% { box-shadow: 0 0 35px rgba(99, 102, 241, 0.5); }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes blinkCursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Typography & Gradient Effects */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.02em;
  word-break: break-word;
}

h1 { font-size: clamp(1.85rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.4rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.1rem; }

.gradient-text {
  background: var(--color-gradient);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  animation: gradientShift 6s ease infinite;
}

/* macOS Code Window UI */
.mac-editor-window {
  background: var(--color-surface);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-neon);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.mac-editor-window:hover {
  border-color: var(--color-primary);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.18), 0 0 40px rgba(99, 102, 241, 0.28);
}

.mac-window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: rgba(15, 23, 42, 0.04);
  border-bottom: 1px solid var(--color-border);
}

.mac-dots {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.mac-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.mac-dot.close { background: #ef4444; }
.mac-dot.minimize { background: #f59e0b; }
.mac-dot.expand { background: #10b981; }

.mac-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.stat-badge {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.mac-window-body {
  padding: 1.75rem;
}

@media (max-width: 640px) {
  .mac-window-body { padding: 1rem; }
}

.tool-action-bar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.tool-btn-sm {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.825rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.tool-btn-sm:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Header & Single Menu Architecture */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text);
}

.site-logo span {
  color: var(--color-primary);
}

.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
}

.nav-menu a {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.5rem 0.85rem;
  min-height: 44px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
}

.nav-menu a:hover,
.nav-menu li.current-menu-item > a {
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.08);
  transform: translateY(-1px);
}

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

.btn-header {
  position: relative;
  overflow: hidden;
  background: var(--color-gradient);
  color: #ffffff !important;
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  min-height: 44px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
  transition: var(--transition-bounce);
  display: inline-flex;
  align-items: center;
}

.btn-header::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: var(--color-shimmer);
  transform: translateX(-100%);
}

.btn-header:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 22px rgba(99, 102, 241, 0.4);
}

.btn-header:hover::after {
  animation: shimmer 1s ease forwards;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
}

@media (max-width: 900px) {
  .btn-header { display: none !important; }
  .mobile-menu-toggle {
    display: flex !important;
    flex-shrink: 0 !important;
    position: relative !important;
    z-index: 1002 !important;
  }
}

@media (max-width: 768px) {
  .cmd-k-text, .cmd-k-shortcut {
    display: none !important;
  }
  .header-search-btn {
    padding: 0.45rem !important;
    border-radius: 50% !important;
    width: 36px !important;
    height: 36px !important;
    justify-content: center !important;
  }
}

  .main-navigation {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 1.25rem;
    display: none !important;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
  }

  .main-navigation.is-active {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  .nav-menu {
    flex-direction: column;
    align-items: flex-start !important;
    gap: 0.5rem !important;
    width: 100%;
  }

  .nav-menu li { width: 100%; }

  .nav-menu a {
    display: flex !important;
    width: 100%;
    padding: 0.75rem 1rem !important;
    font-size: 1.05rem !important;
    min-height: 44px;
  }
}

/* Containers & Layout System */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
}

@media (min-width: 1024px) {
  .container {
    padding: 0 3rem;
  }
}

.section {
  padding: 4.5rem 0;
}

@media (max-width: 640px) {
  .section { padding: 2.5rem 0; }
  .container { padding: 0 1rem; }
}

.hero-section {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

@media (max-width: 640px) {
  .hero-section { padding: 2rem 0 1.5rem; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
}

.animated-float {
  animation: floatLevitate 5s ease-in-out infinite;
  transition: var(--transition-smooth);
}

.animated-float:hover {
  animation-play-state: paused;
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 20px 50px rgba(99, 102, 241, 0.3) !important;
}

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  background: #a5b4fc;
  margin-left: 4px;
  vertical-align: middle;
  animation: blinkCursor 1s infinite;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--color-primary);
  font-size: 0.825rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  transition: var(--transition-bounce);
}

.hero-badge:hover {
  transform: scale(1.05);
  background: rgba(99, 102, 241, 0.15);
}

.hero-title {
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
}

.hero-buttons {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .hero-buttons { justify-content: center; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; width: 100%; }
  .hero-buttons a { width: 100%; text-align: center; }
}

.btn-primary {
  position: relative;
  overflow: hidden;
  background: var(--color-gradient);
  color: #ffffff !important;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.975rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
  transition: var(--transition-bounce);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: var(--color-shimmer);
  transform: translateX(-100%);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.45);
}

.btn-primary:hover::after {
  animation: shimmer 1s ease forwards;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text) !important;
  border: 1px solid var(--color-border);
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.975rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.reveal-fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  animation: autoRevealFallback 0s 1.5s forwards;
}

.reveal-fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
  animation: none;
}

@keyframes autoRevealFallback {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
}

.feature-card {
  position: relative;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--color-gradient);
  opacity: 0;
  transition: var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.3);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-gradient-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1rem;
  transition: var(--transition-bounce);
}

.feature-card:hover .feature-icon {
  transform: scale(1.15) rotate(5deg);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.75rem;
}

@media (max-width: 640px) {
  .post-grid { grid-template-columns: 1fr; }
}

.post-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.post-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.3);
}

.post-card-content {
  padding: 1.35rem;
}

.post-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.stats-section {
  background: var(--color-surface);
  border-y: 1px solid var(--color-border);
  padding: 3rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.35rem;
  transition: var(--transition-bounce);
}

.stat-item:hover .stat-number {
  transform: scale(1.1);
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; gap: 1.75rem; }
}

.footer-col h4 {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

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

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  display: inline-block;
  min-height: 44px;
  line-height: 44px;
  transition: var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   11. Single Post Content — Tech Aesthetics & Rich Formatting
   ========================================================================== */
.single-article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  box-shadow: var(--shadow-md);
  position: relative;
  width: 100%;
}

@media (min-width: 1024px) {
  .single-article-card {
    padding: 4rem 3.5rem;
  }
}

.single-post-content img,
.post-featured-image img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .single-article-card {
    padding: 1.75rem 1.25rem;
  }
}

/* Tag & Category Pills */
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: var(--transition-fast);
}

.cat-pill {
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.cat-pill:hover {
  background: var(--color-primary);
  color: #fff;
}

.date-pill, .read-time-pill {
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.item-tag-pill {
  background: rgba(139, 92, 246, 0.08);
  color: #8b5cf6;
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.item-tag-pill:hover {
  background: #8b5cf6;
  color: #fff;
  transform: translateY(-2px);
}

.mini-tag-pill {
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.mini-tag-pill:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.single-post-content {
  color: var(--color-text);
  font-size: 1.075rem;
  line-height: 1.85;
}

.single-post-content h2,
.single-post-content h3,
.single-post-content h4 {
  color: var(--color-text);
  margin-top: 2.25rem;
  margin-bottom: 1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.single-post-content h2 {
  font-size: 1.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.single-post-content h3 {
  font-size: 1.4rem;
}

.single-post-content p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.single-post-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  transition: color 0.2s;
}

.single-post-content a:hover {
  color: var(--color-accent);
}

.single-post-content pre {
  background: #090d16;
  color: #e2e8f0;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 2rem 0;
  border: 1px solid rgba(99, 102, 241, 0.2);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.3);
  position: relative;
}

.single-post-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.single-post-content p code,
.single-post-content li code {
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-primary);
  padding: 0.2em 0.5em;
  border-radius: 6px;
  font-size: 0.88em;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.single-post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  background: var(--color-gradient-glow);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text);
  font-size: 1.1rem;
}

.single-post-content ul,
.single-post-content ol {
  padding-left: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--color-text-secondary);
}

.single-post-content li {
  margin-bottom: 0.65rem;
}

.single-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.single-post-content th,
.single-post-content td {
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.single-post-content th {
  background: var(--color-surface-hover);
  font-weight: 700;
  color: var(--color-text);
}

.mac-editor-window {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-neon);
  overflow: hidden;
}

.mac-window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--color-surface-hover);
  border-bottom: 1px solid var(--color-border);
  gap: 1rem;
  flex-wrap: wrap;
}

.mac-dots {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.mac-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.mac-dot.close { background: #ef4444; }
.mac-dot.minimize { background: #f59e0b; }
.mac-dot.expand { background: #10b981; }

.mac-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mac-window-body {
  padding: 2rem 2.25rem;
}

@media (max-width: 640px) {
  .mac-window-body {
    padding: 1.25rem 1rem;
  }
}

/* ==========================================================================
   12. Interactive Neural Network Step-by-Step Animation
   ========================================================================== */
.nn-interactive-section {
  padding: 4rem 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
  border-top: 1px solid var(--color-border);
}

.nn-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nn-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.nn-header .nn-tag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-primary);
}

.nn-header h2 {
  margin-top: 0.25rem;
  font-family: var(--font-heading);
}

.nn-header p {
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* Neural Network SVG Diagram */
.nn-diagram-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2rem 1rem;
  position: relative;
  overflow: hidden;
}

.nn-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Neuron Nodes */
.nn-node {
  transition: all 0.4s ease;
  cursor: pointer;
}

.nn-node circle {
  transition: all 0.4s ease;
}

.nn-node:hover circle {
  filter: drop-shadow(0 0 12px currentColor);
  r: 18;
}

.nn-node.active circle {
  filter: drop-shadow(0 0 18px currentColor);
}

.nn-node-label {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--color-text-muted);
  text-anchor: middle;
}

/* Connection Lines */
.nn-connection {
  stroke: var(--color-border);
  stroke-width: 1.2;
  opacity: 0.4;
  transition: all 0.4s ease;
}

.nn-connection.active {
  stroke: #6366f1;
  stroke-width: 2.5;
  opacity: 1;
  filter: drop-shadow(0 0 6px rgba(99, 102, 241, 0.5));
}

/* Data Pulse Animation on Connections */
.nn-pulse {
  fill: none;
  stroke: #06b6d4;
  stroke-width: 3;
  stroke-dasharray: 8 80;
  stroke-linecap: round;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.nn-pulse.active {
  opacity: 1;
  animation: pulseFlow 1.2s linear infinite;
}

@keyframes pulseFlow {
  0% { stroke-dashoffset: 88; }
  100% { stroke-dashoffset: 0; }
}

/* Layer Labels */
.nn-layer-label {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  fill: var(--color-text-muted);
  text-anchor: middle;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nn-layer-label.active {
  fill: var(--color-primary);
}

/* Step Controls */
.nn-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.nn-step-btn {
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  font-family: var(--font-body);
}

.nn-step-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.08);
}

.nn-step-btn.active {
  background: var(--color-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.nn-step-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Step Explanation Box */
.nn-explanation {
  margin-top: 1.5rem;
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  min-height: 80px;
  transition: var(--transition-smooth);
}

.nn-explanation h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.nn-explanation p {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* Glow Animation for Active Neurons */
@keyframes neuronGlow {
  0%, 100% { filter: drop-shadow(0 0 4px currentColor); }
  50% { filter: drop-shadow(0 0 18px currentColor); }
}

.nn-node.active circle {
  animation: neuronGlow 2s ease-in-out infinite;
}

@media (max-width: 640px) {
  .nn-diagram-wrap {
    padding: 1rem 0.5rem;
  }
  .nn-controls {
    gap: 0.5rem;
  }
  .nn-step-btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }
}

/* ==========================================================================
   Mobile Ultra-Responsiveness Overrides (< 768px and < 480px)
   ========================================================================== */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
    max-width: 100% !important;
  }
  
  .post-grid {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }
  
  .single-article-card {
    padding: 1.5rem 1rem !important;
    border-radius: var(--radius-md) !important;
  }
  
  .entry-title {
    font-size: 1.75rem !important;
    line-height: 1.3 !important;
  }
  
  .header-actions {
    gap: 0.35rem !important;
  }

  .btn-header {
    padding: 0.4rem 0.75rem !important;
    font-size: 0.8rem !important;
  }

  pre {
    padding: 1rem !important;
    font-size: 0.825rem !important;
    overflow-x: auto !important;
  }
  
  table {
    display: block;
    overflow-x: auto;
    width: 100%;
  }

  .category-filter-bar {
    padding: 0.5rem !important;
    gap: 0.35rem !important;
  }

  .category-filter-bar .tag-pill {
    font-size: 0.775rem !important;
    padding: 0.25rem 0.65rem !important;
  }

  /* Hero Mac Terminal Visual Responsiveness */
  .hero-visual .animated-float {
    padding: 1.15rem 0.85rem !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: auto !important;
  }

  .hero-visual pre {
    font-size: 0.775rem !important;
    white-space: pre-wrap !important;
    word-break: break-word !important;
  }

  /* Clean Non-overlapping Floating Bottom Bar on Mobile */
  #ai-assistant-widget {
    bottom: 12px !important;
    left: 12px !important;
  }

  #ai-toggle-btn {
    padding: 0.45rem 0.75rem !important;
    font-size: 0.775rem !important;
  }

  .ai-btn-label {
    display: none !important;
  }

  .floating-coffee-widget {
    bottom: 12px !important;
    right: 54px !important;
    padding: 0.45rem 0.75rem !important;
    font-size: 0.775rem !important;
  }

  .coffee-btn-label {
    display: none !important;
  }

  #scroll-to-top-btn {
    bottom: 12px !important;
    right: 12px !important;
    width: 36px !important;
    height: 36px !important;
    font-size: 0.9rem !important;
  }
}

@media (max-width: 480px) {
  h1, .page-title {
    font-size: 1.6rem !important;
  }
  
  h2 {
    font-size: 1.35rem !important;
  }

  .post-card-thumb {
    height: 160px !important;
  }

  .post-card-content {
    padding: 1rem !important;
  }

  .hero-visual .animated-float {
    padding: 1rem 0.75rem !important;
  }
}

/* Category Card Hover Animation */
.cat-card-link:hover .feature-card {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.25);
}