/* ═══════════════════════════════════════════════════════════
   Aatish Sharma — InfoSec Portfolio
   Cyber Terminal Theme
   ═══════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0d1321;
  --bg-card: rgba(13, 19, 33, 0.85);
  --neon-green: #00ff41;
  --neon-cyan: #00e5ff;
  --neon-magenta: #ff2d75;
  --neon-yellow: #f0e130;
  --text-primary: #e0e6ed;
  --text-secondary: #8892a4;
  --text-muted: #4a5568;
  --border-glow: rgba(0, 255, 65, 0.25);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-body: 'Inter', -apple-system, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glow-green: 0 0 15px rgba(0, 255, 65, 0.3), 0 0 30px rgba(0, 255, 65, 0.1);
  --glow-cyan: 0 0 15px rgba(0, 229, 255, 0.3), 0 0 30px rgba(0, 229, 255, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

::selection {
  background: var(--neon-green);
  color: var(--bg-primary);
}

/* ── Utility ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-title {
  font-family: var(--font-mono);
  font-size: 2rem;
  margin-bottom: 48px;
  text-align: center;
  color: var(--text-primary);
}
.section-title .prompt {
  color: var(--neon-green);
  margin-right: 8px;
}

/* Glassmorphism card */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glow-green);
  border-color: var(--neon-green);
}

/* Fade-in on scroll */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Background Canvases ── */
#matrix-canvas,
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}
#particle-canvas { display: none; }
body.particles-active #matrix-canvas { display: none; }
body.particles-active #particle-canvas { display: block; }

/* ══════════════════════════
   NAVBAR
   ══════════════════════════ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 64px;
  transition: background var(--transition);
}

.nav-brand a {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--neon-green);
}
.nav-brand .blink {
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 6px;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--neon-green);
  background: rgba(0, 255, 65, 0.08);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--neon-green);
  border-radius: 2px;
  transition: all var(--transition);
}

.bg-toggle-btn {
  background: none;
  border: 1px solid var(--text-muted);
  color: var(--text-secondary);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition);
}
.bg-toggle-btn:hover,
.bg-toggle-btn.active {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

/* ══════════════════════════
   HERO
   ══════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 64px;
}

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

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--neon-green);
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeSlideUp 0.8s 0.3s forwards;
}

.hero-name {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeSlideUp 0.8s 0.6s forwards;
  position: relative;
}

/* Glitch effect */
.glitch {
  position: relative;
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.glitch::before {
  color: var(--neon-cyan);
  animation: glitch-1 3s infinite linear alternate-reverse;
  clip-path: inset(0 0 80% 0);
}
.glitch::after {
  color: var(--neon-magenta);
  animation: glitch-2 3s infinite linear alternate-reverse;
  clip-path: inset(80% 0 0 0);
}

@keyframes glitch-1 {
  0%, 95% { transform: translate(0); }
  96% { transform: translate(-3px, 2px); }
  97% { transform: translate(3px, -2px); }
  98% { transform: translate(-1px, 1px); }
  99% { transform: translate(2px, -1px); }
  100% { transform: translate(0); }
}
@keyframes glitch-2 {
  0%, 95% { transform: translate(0); }
  96% { transform: translate(3px, -2px); }
  97% { transform: translate(-3px, 2px); }
  98% { transform: translate(1px, -1px); }
  99% { transform: translate(-2px, 1px); }
  100% { transform: translate(0); }
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: 32px;
  min-height: 2em;
  opacity: 0;
  animation: fadeSlideUp 0.8s 0.9s forwards;
}
.hero-tagline .cursor {
  color: var(--neon-green);
  animation: blink 0.8s step-end infinite;
}

.hero-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeSlideUp 0.8s 1.2s forwards;
}
.hero-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 1.3rem;
  padding: 12px;
  border: 1px solid var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.hero-links a:hover {
  color: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: var(--glow-green);
}
.btn-download {
  font-family: var(--font-mono);
  font-size: 0.9rem !important;
  padding: 12px 20px !important;
  background: rgba(0, 255, 65, 0.08);
  border-color: var(--neon-green) !important;
  color: var(--neon-green) !important;
}
.btn-download:hover {
  background: rgba(0, 255, 65, 0.18) !important;
}

.scroll-down {
  display: block;
  margin-top: 60px;
  color: var(--text-muted);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
  opacity: 0;
  animation: fadeSlideUp 0.8s 1.5s forwards, bounce 2s 2.3s infinite;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-12px); }
  60% { transform: translateY(-6px); }
}

/* ══════════════════════════
   ABOUT
   ══════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
  align-items: start;
}

.about-text {
  padding: 32px;
}
.about-text p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}
.about-text strong {
  color: var(--neon-cyan);
}

/* ── About decrypt toggle ── */
.about-teaser p {
  margin-bottom: 8px;
}
.about-decrypt-btn {
  margin-top: 20px;
  padding: 12px 28px;
  background: transparent;
  border: 1px solid var(--neon-green);
  color: var(--neon-green);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 10;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.about-decrypt-btn:hover {
  background: rgba(0,255,65,0.1);
  box-shadow: 0 0 15px rgba(0,255,65,0.25);
}
.about-decrypt-btn.decrypted {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.about-full {
  margin-top: 16px;
  animation: aboutReveal 0.6s ease forwards;
}
@keyframes aboutReveal {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  padding: 24px;
  text-align: center;
}
.stat-card i {
  font-size: 1.8rem;
  color: var(--neon-green);
  margin-bottom: 12px;
  display: block;
}
.stat-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--neon-cyan);
  display: block;
}
.stat-number.highlight {
  display: inline;
  font-size: inherit;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
  display: block;
}

/* ══════════════════════════
   TIMELINE (Education & Experience)
   ══════════════════════════ */
.timeline {
  position: relative;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--neon-green), transparent);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
}
.timeline-item.left {
  left: 0;
  text-align: right;
}
.timeline-item.right {
  left: 50%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 30px;
  width: 14px;
  height: 14px;
  background: var(--neon-green);
  border: 3px solid var(--bg-primary);
  border-radius: 50%;
  box-shadow: var(--glow-green);
  z-index: 1;
}
.timeline-item.left::before { right: -7px; }
.timeline-item.right::before { left: -7px; }

.timeline-content {
  padding: 24px;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--neon-green);
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.timeline-subtitle {
  color: var(--neon-cyan);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.timeline-gpa {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.timeline-gpa i { color: var(--neon-yellow); margin-right: 6px; }

.timeline-location {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.timeline-location i { margin-right: 6px; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}
.timeline-item.right .tags { justify-content: flex-start; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 10px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 20px;
  color: var(--neon-cyan);
}

.experience-list {
  list-style: none;
  padding: 0;
  text-align: left;
}
.experience-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}
.experience-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--neon-green);
}
.experience-list strong { color: var(--neon-cyan); }

/* ══════════════════════════
   SKILLS
   ══════════════════════════ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.skill-category {
  padding: 28px;
}
.skill-category h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--neon-green);
  margin-bottom: 16px;
}
.skill-category h3 i {
  margin-right: 8px;
}

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

.skill-pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 14px;
  background: rgba(0, 255, 65, 0.06);
  border: 1px solid rgba(0, 255, 65, 0.2);
  border-radius: 20px;
  color: var(--neon-green);
  transition: all var(--transition);
}
.skill-pill:hover {
  background: rgba(0, 255, 65, 0.15);
  box-shadow: 0 0 12px rgba(0, 255, 65, 0.2);
  transform: scale(1.05);
}
.skill-pill.accent {
  border-color: rgba(0, 229, 255, 0.2);
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.06);
}
.skill-pill.accent:hover {
  background: rgba(0, 229, 255, 0.15);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
}

/* ══════════════════════════
   CERTIFICATIONS
   ══════════════════════════ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.cert-card {
  padding: 32px;
  text-align: center;
}
.cert-icon {
  font-size: 2.5rem;
  color: var(--neon-cyan);
  margin-bottom: 16px;
}
.cert-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ══════════════════════════
   PROJECTS
   ══════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  position: relative;
  min-height: 280px;
  perspective: 1000px;
  cursor: pointer;
}
.project-card .project-front,
.project-card .project-back {
  padding: 28px;
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  transition: transform 0.6s ease;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.project-card .project-front {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
}
.project-card .project-back {
  background: var(--bg-secondary);
  border: 1px solid var(--neon-green);
  transform: rotateY(180deg);
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.project-card:hover .project-front { transform: rotateY(180deg); }
.project-card:hover .project-back { transform: rotateY(360deg); }

.project-icon {
  font-size: 2.5rem;
  color: var(--neon-green);
  margin-bottom: 16px;
}
.project-card h3 { margin-bottom: 12px; }

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.vuln-badges {
  display: flex;
  gap: 8px;
  margin: 10px 0;
  flex-wrap: wrap;
  justify-content: center;
}
.vuln {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 600;
}
.vuln.high { background: rgba(255, 45, 117, 0.2); color: var(--neon-magenta); border: 1px solid var(--neon-magenta); }
.vuln.medium { background: rgba(240, 225, 48, 0.15); color: var(--neon-yellow); border: 1px solid var(--neon-yellow); }
.vuln.low { background: rgba(0, 229, 255, 0.15); color: var(--neon-cyan); border: 1px solid var(--neon-cyan); }
.vuln-detail { font-family: var(--font-mono); font-size: 0.8rem; color: var(--neon-magenta); margin-bottom: 8px; }

/* ══════════════════════════
   ACHIEVEMENTS
   ══════════════════════════ */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
}

.achievement-card {
  padding: 40px 28px;
  text-align: center;
}
.achievement-icon {
  font-size: 2.5rem;
  color: var(--neon-yellow);
  margin-bottom: 16px;
}
.achievement-card h3 { margin-bottom: 8px; }
.achievement-card p {
  color: var(--text-secondary);
}

/* ══════════════════════════
   TERMINAL
   ══════════════════════════ */
.terminal-window {
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--border-glow);
}
.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27c93f; }
.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

.terminal-body {
  padding: 20px;
  min-height: 300px;
  max-height: 500px;
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.5);
}

.terminal-output {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
}
.terminal-line {
  color: var(--neon-green);
}
.terminal-line.cmd {
  color: var(--text-primary);
}
.terminal-line .cmd-highlight {
  color: var(--neon-cyan);
  font-weight: 600;
}

.terminal-input-line {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.terminal-prompt {
  color: var(--neon-green);
  white-space: nowrap;
}
.terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  caret-color: var(--neon-green);
}

/* ══════════════════════════
   CONTACT GATE
   ══════════════════════════ */
.contact-gate {
  max-width: 520px;
  margin: 0 auto;
  padding: 40px 36px;
  text-align: center;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.gate-icon {
  font-size: 3rem;
  color: var(--neon-cyan);
  margin-bottom: 16px;
}
.contact-gate h3 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--neon-green);
}
.contact-gate p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 28px;
}

.gate-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: left;
}
.gate-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.gate-field label i {
  margin-right: 6px;
  color: var(--neon-green);
}
.gate-field input,
.gate-field select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.gate-field input:focus,
.gate-field select:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 8px rgba(0, 255, 65, 0.15);
}
.gate-field input::placeholder {
  color: var(--text-muted);
}
.gate-field select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.gate-submit {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 14px 24px;
  background: rgba(0, 255, 65, 0.1);
  border: 1px solid var(--neon-green);
  border-radius: var(--radius-sm);
  color: var(--neon-green);
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 4px;
}
.gate-submit:hover {
  background: rgba(0, 255, 65, 0.2);
  box-shadow: var(--glow-green);
  transform: translateY(-2px);
}
.gate-submit:active {
  transform: translateY(0);
}

.gate-welcome {
  max-width: 600px;
  margin: 0 auto 28px;
  padding: 20px 28px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--neon-green);
  border-color: var(--neon-green);
  animation: fadeSlideUp 0.5s ease;
}
.gate-welcome i {
  margin-right: 8px;
}

.contact-details {
  animation: fadeSlideUp 0.6s ease;
}

/* ══════════════════════════
   CONTACT / FOOTER
   ══════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.contact-card i {
  font-size: 1.3rem;
  color: var(--neon-cyan);
}
.contact-card:hover {
  color: var(--neon-green);
}
.contact-card:hover i {
  color: var(--neon-green);
}

.footer {
  text-align: center;
  padding: 32px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-glow);
}
.footer i { color: var(--neon-green); margin: 0 4px; }

/* ══════════════════════════
   PAGE HEADER (for sub-pages)
   ══════════════════════════ */
.page-header {
  padding-top: 100px;
  padding-bottom: 40px;
  text-align: center;
}
.page-header h1 {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.page-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ══════════════════════════
   BLOG STYLES
   ══════════════════════════ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
  padding-bottom: 80px;
}

.blog-card {
  padding: 28px;
  cursor: pointer;
}
.blog-card .blog-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  display: flex;
  gap: 16px;
}
.blog-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  transition: color var(--transition);
}
.blog-card:hover h3 { color: var(--neon-green); }
.blog-card .blog-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 14px;
}
.blog-card .blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Blog Post full view */
.blog-post {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 80px;
}
.blog-post-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-glow);
}
.blog-post-header h1 {
  font-family: var(--font-mono);
  font-size: 2rem;
  margin-bottom: 12px;
}
.blog-post-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-secondary);
}
.blog-post-content h2 {
  color: var(--neon-green);
  font-family: var(--font-mono);
  margin: 32px 0 16px;
}
.blog-post-content h3 {
  color: var(--neon-cyan);
  margin: 24px 0 12px;
}
.blog-post-content code {
  font-family: var(--font-mono);
  background: rgba(0, 255, 65, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--neon-green);
  font-size: 0.9em;
}
.blog-post-content pre {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin: 20px 0;
}
.blog-post-content pre code {
  background: none;
  padding: 0;
}
.blog-post-content blockquote {
  border-left: 3px solid var(--neon-cyan);
  padding-left: 20px;
  margin: 20px 0;
  color: var(--text-muted);
  font-style: italic;
}
.blog-post-content ul, .blog-post-content ol {
  margin: 16px 0;
  padding-left: 24px;
}
.blog-post-content li {
  margin-bottom: 8px;
}
.blog-post-content strong { color: var(--text-primary); }
.blog-post-content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 16px 0;
}
.blog-post-content a {
  border-bottom: 1px dashed var(--neon-cyan);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--neon-green);
  margin-bottom: 24px;
}

/* ══════════════════════════
   CTF STYLES
   ══════════════════════════ */
.ctf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
  padding-bottom: 80px;
}

.ctf-card {
  padding: 28px;
  cursor: pointer;
}
.ctf-card .ctf-difficulty {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 12px;
}
.ctf-card .ctf-difficulty.easy { background: rgba(0, 255, 65, 0.15); color: var(--neon-green); }
.ctf-card .ctf-difficulty.medium { background: rgba(240, 225, 48, 0.15); color: var(--neon-yellow); }
.ctf-card .ctf-difficulty.hard { background: rgba(255, 45, 117, 0.15); color: var(--neon-magenta); }
.ctf-card h3 { margin-bottom: 10px; }
.ctf-card:hover h3 { color: var(--neon-green); }
.ctf-card .ctf-platform {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* ══════════════════════════
   CONTENT LIBRARY
   ══════════════════════════ */
.library-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.library-controls input,
.library-controls select {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition);
}
.library-controls input:focus,
.library-controls select:focus {
  border-color: var(--neon-green);
}
.library-controls input { flex: 1; min-width: 200px; }
.library-controls select { min-width: 160px; }

.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  padding-bottom: 80px;
}

.library-card {
  padding: 24px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.library-card .library-category {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 10px;
  background: rgba(0, 229, 255, 0.12);
  color: var(--neon-cyan);
}
.library-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.library-card:hover h3 { color: var(--neon-green); }
.library-card .library-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-bottom: 12px;
}
.library-card .library-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Library content viewer */
.library-viewer {
  max-width: 900px;
  margin: 0 auto;
  padding-bottom: 80px;
}
.library-viewer-content {
  padding: 32px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.library-viewer-content h1,
.library-viewer-content h2,
.library-viewer-content h3 { color: var(--neon-green); margin: 24px 0 12px; }
.library-viewer-content code {
  font-family: var(--font-mono);
  background: rgba(0, 255, 65, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--neon-green);
}
.library-viewer-content pre {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin: 16px 0;
}
.library-viewer-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.library-viewer-content th,
.library-viewer-content td {
  padding: 10px 14px;
  border: 1px solid var(--border-glow);
  text-align: left;
}
.library-viewer-content th {
  background: rgba(0, 255, 65, 0.08);
  color: var(--neon-green);
  font-family: var(--font-mono);
}
.library-viewer-content img { max-width: 100%; border-radius: var(--radius-sm); }

/* ══════════════════════════
   POST ENHANCEMENTS
   ══════════════════════════ */

/* ── Copy-to-Clipboard Button ── */
.blog-post-content pre,
.library-viewer-content pre {
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 255, 65, 0.1);
  border: 1px solid rgba(0, 255, 65, 0.25);
  color: var(--neon-green);
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition), background var(--transition);
  z-index: 2;
  font-family: var(--font-mono);
}
pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover {
  background: rgba(0, 255, 65, 0.2);
}
.copy-btn.copied {
  color: var(--neon-cyan);
  border-color: rgba(0, 229, 255, 0.4);
}

/* ── Callout / Admonition Blocks ── */
.callout {
  border-radius: var(--radius-sm);
  margin: 24px 0;
  overflow: hidden;
  border-left: 4px solid;
}
.callout-header {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.callout-body {
  padding: 12px 16px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.callout-body p { margin: 8px 0; }
.callout-body p:first-child { margin-top: 0; }
.callout-body p:last-child  { margin-bottom: 0; }

/* Note / Info */
.callout-note {
  background: rgba(0, 229, 255, 0.06);
  border-color: var(--neon-cyan);
}
.callout-note .callout-header {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.1);
}

/* Tip */
.callout-tip {
  background: rgba(0, 255, 65, 0.06);
  border-color: var(--neon-green);
}
.callout-tip .callout-header {
  color: var(--neon-green);
  background: rgba(0, 255, 65, 0.1);
}

/* Warning / Caution */
.callout-warning {
  background: rgba(240, 225, 48, 0.06);
  border-color: var(--neon-yellow);
}
.callout-warning .callout-header {
  color: var(--neon-yellow);
  background: rgba(240, 225, 48, 0.1);
}

/* Danger / Important */
.callout-danger {
  background: rgba(255, 45, 117, 0.06);
  border-color: var(--neon-magenta);
}
.callout-danger .callout-header {
  color: var(--neon-magenta);
  background: rgba(255, 45, 117, 0.1);
}

/* ── Table of Contents ── */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 24px 0 32px;
}
.toc-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--neon-green);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.toc li {
  margin: 0;
  line-height: 1.6;
}
.toc li a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition);
  display: inline-block;
  padding: 2px 0;
  border-bottom: none;
}
.toc li a:hover { color: var(--neon-green); }
.toc-h2 { padding-left: 0; }
.toc-h2::before {
  content: '▸ ';
  color: var(--neon-cyan);
  font-family: var(--font-mono);
}
.toc-h3 {
  padding-left: 20px;
}
.toc-h3::before {
  content: '› ';
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── Mermaid Diagram Overrides ── */
.mermaid-diagram {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin: 24px 0;
  text-align: center;
  overflow-x: auto;
}
.mermaid-diagram svg {
  max-width: 100%;
  height: auto;
}

/* ── Highlight.js Theme Overrides (match terminal aesthetic) ── */
.blog-post-content pre code.hljs,
.library-viewer-content pre code.hljs {
  background: transparent;
  padding: 0;
}
.hljs { background: transparent !important; }

/* ── Tables inside posts ── */
.blog-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.92rem;
}
.blog-post-content th,
.blog-post-content td {
  padding: 10px 14px;
  border: 1px solid var(--border-glow);
  text-align: left;
}
.blog-post-content th {
  background: rgba(0, 255, 65, 0.08);
  color: var(--neon-green);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.blog-post-content tr:hover {
  background: rgba(0, 229, 255, 0.04);
}

/* ── Horizontal Rules ── */
.blog-post-content hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
  margin: 32px 0;
}

/* ══════════════════════════
   RESPONSIVE
   ══════════════════════════ */
@media (max-width: 1199px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 23, 0.97);
    flex-direction: column;
    padding: 20px 0;
    gap: 0;
    transform: translateY(-120%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--border-glow);
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .nav-links a {
    padding: 12px 32px;
    display: block;
    width: 100%;
    text-align: center;
  }

  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }

  /* Timeline mobile */
  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; left: 0 !important; padding-left: 50px; padding-right: 16px; text-align: left !important; }
  .timeline-item::before { left: 13px !important; right: auto !important; }
  .tags { justify-content: flex-start !important; }

  .blog-grid, .ctf-grid, .library-grid { grid-template-columns: 1fr; }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in { opacity: 1; transform: none; }
  #matrix-canvas, #particle-canvas { display: none !important; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--neon-green); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon-cyan); }