/* ============================================
   CYBER BLOG - Core Stylesheet
   Author: Customize with your name
   ============================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Rajdhani:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ── CSS Variables (Dark Mode Default) ── */
:root {
  --bg-primary:     #0a0d14;
  --bg-secondary:   #0f1319;
  --bg-card:        #141920;
  --bg-hover:       #1a2030;
  --border:         #1e2d40;
  --border-glow:    #00ff9d33;

  --text-primary:   #e2e8f0;
  --text-secondary: #8899aa;
  --text-muted:     #4a5568;

  --accent-green:   #00ff9d;
  --accent-cyan:    #00d4ff;
  --accent-purple:  #7c3aed;
  --accent-red:     #ff4757;
  --accent-yellow:  #ffd700;

  --glow-green:  0 0 20px #00ff9d55, 0 0 40px #00ff9d22;
  --glow-cyan:   0 0 20px #00d4ff55, 0 0 40px #00d4ff22;
  --glow-purple: 0 0 20px #7c3aed55;

  --font-mono:    'JetBrains Mono', 'Share Tech Mono', monospace;
  --font-display: 'Rajdhani', sans-serif;
  --font-body:    'Rajdhani', sans-serif;

  --radius:    8px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── All 4 themes (light, redteam, blueteam + light) defined in css/themes.css ── */
/* ── Imported via <link> in every HTML page. This :root block = dark mode default. ── */

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent-green); border-radius: 3px; }

a { color: var(--accent-cyan); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-green); }

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

/* ── Utility ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::before {
  content: '//';
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 1.2rem;
  opacity: 0.8;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), transparent);
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--border-glow);
  border: 1px solid var(--accent-green);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-green);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition);
}

.tag:hover {
  background: var(--accent-green);
  color: var(--bg-primary);
  box-shadow: var(--glow-green);
}

.tag.active {
  background: var(--accent-green);
  color: var(--bg-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--accent-green);
  color: var(--bg-primary);
  border: 1px solid var(--accent-green);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent-green);
  box-shadow: var(--glow-green);
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
}

.btn-outline:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  box-shadow: var(--glow-cyan);
}

/* ── Grid Scan Line Texture ── */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,255,157,0.015) 2px,
    rgba(0,255,157,0.015) 4px
  );
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] body::before { display: none; }

/* ── NAVBAR ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s ease;
}

[data-theme="light"] #navbar {
  background: rgba(240, 244, 248, 0.9);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo span { color: var(--text-secondary); }
.nav-logo .cursor {
  display: inline-block;
  width: 8px; height: 16px;
  background: var(--accent-green);
  animation: blink 1s step-end infinite;
  vertical-align: middle;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--accent-green);
  transition: width 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-green);
}

.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

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

/* Theme Toggle */
.theme-toggle {
  width: 44px; height: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.theme-toggle::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent-green);
  transition: transform 0.3s ease;
  box-shadow: var(--glow-green);
}

[data-theme="light"] .theme-toggle::after {
  transform: translateX(20px);
  background: var(--accent-cyan);
}

/* Search Bar */
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-search input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.4rem 0.8rem 0.4rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-primary);
  width: 180px;
  transition: var(--transition);
  outline: none;
}

.nav-search input:focus {
  border-color: var(--accent-green);
  box-shadow: var(--glow-green);
  width: 220px;
}

.nav-search input::placeholder { color: var(--text-muted); }

.search-icon {
  position: absolute;
  left: 0.6rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  pointer-events: none;
}

/* Mobile Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--accent-green);
  transition: var(--transition);
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0,255,157,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(0,212,255,0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, rgba(124,58,237,0.05) 0%, transparent 50%);
  pointer-events: none;
}

/* Grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--accent-green);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-green);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease both;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: var(--glow-green);
  animation: pulse 2s ease infinite;
}

@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.3)} }

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.6s 0.1s ease both;
}

.hero-name .highlight {
  color: var(--accent-green);
  text-shadow: var(--glow-green);
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  min-height: 2rem;
  animation: fadeInUp 0.6s 0.2s ease both;
}

.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--accent-cyan);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 0.8s step-end infinite;
}

.hero-desc {
  max-width: 540px;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 2.5rem;
  line-height: 1.8;
  animation: fadeInUp 0.6s 0.3s ease both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s 0.4s ease both;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 4rem;
  animation: fadeInUp 0.6s 0.5s ease both;
}

.stat {
  text-align: center;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-green);
  display: block;
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Hero Terminal */
.hero-terminal {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), var(--glow-green);
  animation: fadeInRight 0.8s 0.3s ease both;
  max-width: 480px;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 12px; height: 12px;
  border-radius: 50%;
}

.dot-red   { background: #ff5f57; }
.dot-yellow{ background: #febc2e; }
.dot-green { background: #28c840; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 2;
  min-height: 280px;
}

.term-line { display: flex; gap: 0.5rem; }
.term-prompt { color: var(--accent-green); user-select: none; }
.term-cmd { color: var(--text-primary); }
.term-output { color: var(--text-secondary); padding-left: 1.1rem; }
.term-success { color: var(--accent-green); padding-left: 1.1rem; }
.term-info { color: var(--accent-cyan); padding-left: 1.1rem; }
.term-error { color: var(--accent-red); padding-left: 1.1rem; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── SECTION WRAPPERS ── */
section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

section:nth-child(even) {
  background: var(--bg-secondary);
}

/* ── LATEST POSTS ── */
.posts-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background: linear-gradient(180deg, var(--accent-green), var(--accent-cyan));
  transition: height 0.4s ease;
}

.post-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3), var(--glow-green);
}

.post-card:hover::before { height: 100%; }

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.post-read-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.post-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
  line-height: 1.3;
  transition: color 0.3s;
}

.post-card:hover .post-title { color: var(--accent-green); }

.post-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 1.2rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.post-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; }

.read-more {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.read-more::after {
  content: '→';
  transition: transform 0.3s;
}

.post-card:hover .read-more::after { transform: translateX(4px); }

/* ── FEATURED CATEGORIES ── */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--cat-color, var(--accent-green));
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover::after { opacity: 0.05; }

.category-card:hover {
  border-color: var(--cat-color, var(--accent-green));
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.cat-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.cat-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--cat-color, var(--accent-green));
  margin-bottom: 0.25rem;
}

.cat-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── SEARCH RESULTS ── */
#search-results {
  position: fixed;
  top: 70px; right: 2rem;
  width: 380px;
  max-height: 60vh;
  overflow-y: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  z-index: 999;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  display: none;
}

#search-results.active { display: block; }

.search-result-item {
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.search-result-item:hover { background: var(--bg-hover); }

.search-result-title {
  font-family: var(--font-display);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.search-result-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.search-empty {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ── CTF WRITEUPS ── */
.ctf-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.ctf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
}

.ctf-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.ctf-card:hover {
  border-color: var(--accent-purple);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3), var(--glow-purple);
}

.ctf-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.ctf-category {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.cat-web     { background: rgba(0,212,255,0.15); color: var(--accent-cyan);   border: 1px solid var(--accent-cyan); }
.cat-crypto  { background: rgba(255,215,0,0.15);  color: var(--accent-yellow); border: 1px solid var(--accent-yellow); }
.cat-pwn     { background: rgba(255,71,87,0.15);  color: var(--accent-red);   border: 1px solid var(--accent-red); }
.cat-rev     { background: rgba(124,58,237,0.15); color: var(--accent-purple);border: 1px solid var(--accent-purple); }
.cat-misc    { background: rgba(0,255,157,0.15);  color: var(--accent-green); border: 1px solid var(--accent-green); }
.cat-forensics { background: rgba(255,165,0,0.15); color: orange; border: 1px solid orange; }

.ctf-difficulty {
  display: flex;
  gap: 3px;
}

.diff-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
}

.diff-dot.filled { background: var(--accent-yellow); }
.diff-dot.hard   { background: var(--accent-red); }

.ctf-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.ctf-event {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.ctf-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.ctf-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ctf-points {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-yellow);
}

/* ── ABOUT PAGE ── */
.about-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 4rem;
  align-items: start;
}

.profile-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  position: sticky;
  top: 100px;
}

.profile-img-wrapper {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto 1.5rem;
}

.profile-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-green);
  box-shadow: var(--glow-green);
}

.profile-img-wrapper::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--accent-green);
  opacity: 0.3;
  animation: rotateRing 8s linear infinite;
}

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

.profile-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.profile-handle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-green);
  margin-bottom: 1rem;
}

.profile-location {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 1rem;
  transition: var(--transition);
}

.social-link:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: var(--glow-green);
  transform: translateY(-2px);
}

.about-bio {
  margin-bottom: 2rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.skills-section h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  color: var(--accent-cyan);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.skill-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.skill-chip:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  transform: scale(1.03);
}

.skill-chip .skill-icon { font-size: 1rem; }

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-green), var(--accent-purple), transparent);
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: var(--glow-green);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
}

.timeline-title {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.timeline-org {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── BLOG POST PAGE ── */
.post-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 3rem;
  align-items: start;
}

.post-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.post-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 1rem 0;
  letter-spacing: 0.02em;
}

.post-body h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--accent-cyan);
  letter-spacing: 0.03em;
}

.post-body h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--text-primary);
}

.post-body p {
  margin-bottom: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 1.05rem;
}

.post-body ul, .post-body ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  line-height: 2;
}

.post-body blockquote {
  border-left: 3px solid var(--accent-green);
  padding: 0.75rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Code blocks */
.post-body pre {
  background: #080b10;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
}

[data-theme="light"] .post-body pre {
  background: #1a1f2e;
}

.post-body pre::before {
  content: attr(data-lang);
  position: absolute;
  top: 0.5rem; right: 0.75rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-card);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--accent-green);
  border: 1px solid var(--border);
}

.post-body pre code {
  background: transparent;
  padding: 0;
  border: none;
  color: inherit;
}

/* Syntax colors */
.kw { color: #c792ea; }
.fn { color: #82aaff; }
.st { color: #c3e88d; }
.cm { color: #546e7a; font-style: italic; }
.nm { color: #f78c6c; }
.op { color: #89ddff; }

/* TOC Sidebar */
.post-toc {
  position: sticky;
  top: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-green);
  margin-bottom: 1rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toc-list a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: block;
  padding: 0.25rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: var(--transition);
}

.toc-list a:hover, .toc-list a.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* ── NEWSLETTER ── */
.newsletter-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.newsletter-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,255,157,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.newsletter-desc {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  max-width: 460px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

.newsletter-input:focus {
  border-color: var(--accent-green);
  box-shadow: var(--glow-green);
}

.newsletter-input::placeholder { color: var(--text-muted); }

/* ── FOOTER ── */
#footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-green);
  margin-bottom: 1rem;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 280px;
}

.footer-col-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.3s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

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

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

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

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-badges {
  display: flex;
  gap: 0.5rem;
}

.footer-badge {
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── PAGE HERO ── */
.page-hero {
  padding: 8rem 0 4rem;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,255,157,0.08) 0%, transparent 60%);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.page-hero-sub {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ── GLITCH EFFECT ── */
.glitch {
  position: relative;
}

.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  pointer-events: none;
}

.glitch::before {
  color: var(--accent-cyan);
  animation: glitch1 3s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 40%, 0 40%);
}

.glitch::after {
  color: var(--accent-red);
  animation: glitch2 3s infinite;
  clip-path: polygon(0 60%, 100% 60%, 100% 100%, 0 100%);
}

@keyframes glitch1 {
  0%,95%,100% { transform: none; opacity: 0; }
  96% { transform: translateX(-3px); opacity: 0.8; }
  98% { transform: translateX(3px); opacity: 0.8; }
}

@keyframes glitch2 {
  0%,95%,100% { transform: none; opacity: 0; }
  97% { transform: translateX(3px); opacity: 0.8; }
  99% { transform: translateX(-3px); opacity: 0.8; }
}

/* ── LOADING ANIMATION ── */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  transition: opacity 0.6s ease, visibility 0.6s;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-green);
}

.loader-bar {
  width: 200px; height: 2px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
}

.loader-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan));
  animation: loadBar 1.5s ease forwards;
}

@keyframes loadBar {
  from { width: 0; }
  to   { width: 100%; }
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .about-layout { grid-template-columns: 1fr; }
  .profile-card { position: static; }
  .post-layout { grid-template-columns: 1fr; }
  .post-toc { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-search { display: none; }
  .hamburger { display: flex; }
  
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
    gap: 1.5rem;
    z-index: 999;
  }

  #hero {
    flex-direction: column;
    text-align: center;
  }

  .hero-grid { opacity: 0.1; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-terminal { display: none; }

  .posts-grid { grid-template-columns: 1fr; }
  .ctf-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
  #search-results { left: 1rem; right: 1rem; width: auto; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.2rem; }
  section { padding: 3rem 0; }
  .categories-grid { grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── UTILITY ANIMATIONS ── */
.fade-in {
  animation: fadeInUp 0.6s ease both;
}

[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].in-view {
  opacity: 1;
  transform: none;
}

/* Stagger delays */
[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }
[data-delay="5"] { transition-delay: 0.5s; }
[data-delay="6"] { transition-delay: 0.6s; }

/* Highlight box */
.callout {
  border: 1px solid var(--accent-cyan);
  background: rgba(0,212,255,0.05);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.callout.warning {
  border-color: var(--accent-yellow);
  background: rgba(255,215,0,0.05);
}

.callout.danger {
  border-color: var(--accent-red);
  background: rgba(255,71,87,0.05);
}

/* Back to top */
#back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-green);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

#back-to-top:hover {
  border-color: var(--accent-green);
  box-shadow: var(--glow-green);
  transform: translateY(-2px);
}

/* Progress bar */
#reading-progress {
  position: fixed;
  top: 60px; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan));
  z-index: 999;
  width: 0;
  transition: width 0.1s ease;
  box-shadow: var(--glow-green);
}