/* ============================================================
   CYBERPUNK PORTFOLIO — GLOBAL STYLESHEET
   style.css
   
   Link this file in every page with:
   <link rel="stylesheet" href="style.css">
   
   Table of Contents:
   1.  CSS Variables (Design Tokens)
   2.  Reset & Base
   3.  Scrollbar
   4.  Navigation
   5.  Hero
   6.  Section Shared Styles
   7.  About
   8.  CTF Write-Ups
   9.  Articles
   10. Certifications
   13. Contact
   14. Footer
   15. Utilities
   16. Responsive
============================================================ */


/* ════════════════════════════════════════
   1. CSS VARIABLES (Design Tokens)
   ════════════════════════════════════════ */
:root {
  /* — Color Palette — */
  --purple-deep:    #0E093D;
  --purple-mid:     #170D85;
  --purple-vivid:   #5F1CBD;
  --magenta:        #D34AE8;
  --magenta-soft:   #c040d8;
  --green-neon:     #4DFA54;
  --yellow-neon:    #D5FA4D;
  --black:          #06040F;
  --white:          #F0EEF8;
  --grey-dim:       #2a2545;
  --scanline-color: rgba(13, 8, 40, 0.18);

  /* — Glow Effects — */
  --glow-purple:  0 0 8px #5F1CBD, 0 0 20px #5F1CBD55;
  --glow-magenta: 0 0 8px #D34AE8, 0 0 24px #D34AE888;
  --glow-green:   0 0 8px #4DFA54, 0 0 20px #4DFA5466;
  --glow-yellow:  0 0 8px #D5FA4D, 0 0 20px #D5FA4D55;

  /* — Typography — */
  --font-mono:    'Share Tech Mono', monospace;
  --font-display: 'Orbitron', monospace;
  --font-body:    'Rajdhani', sans-serif;
}


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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: default;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed; inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    var(--scanline-color) 3px,
    var(--scanline-color) 4px
  );
  pointer-events: none;
  z-index: 9999;
  animation: scanPulse 8s ease-in-out infinite;
}

@keyframes scanPulse {
  0%, 100% { opacity: .6; }
  50%       { opacity: .35; }
}

/* Noise texture overlay */
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9998;
  opacity: .5;
}


/* ════════════════════════════════════════
   3. SCROLLBAR
   ════════════════════════════════════════ */
::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--purple-vivid); border-radius: 3px; }


/* ════════════════════════════════════════
   4. NAVIGATION
   ════════════════════════════════════════ */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 2rem;
  background: rgba(6, 4, 15, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--purple-vivid);
  box-shadow: 0 0 20px #5F1CBD44;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 900;
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
  letter-spacing: .15em;
  text-decoration: none;
}

.nav-logo span {
  color: var(--green-neon);
  text-shadow: var(--glow-green);
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: .1em;
  transition: color .2s, text-shadow .2s;
  position: relative;
}

.nav-links a::before {
  content: '//';
  color: var(--purple-vivid);
  margin-right: .25rem;
}

.nav-links a:hover {
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
}

/* Hamburger button */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--magenta);
  border-radius: 2px;
  transition: all .3s;
}

/* Mobile dropdown menu */
.mobile-menu {
  display: none;
  position: fixed; top: 52px; left: 0; right: 0;
  background: rgba(6, 4, 15, .97);
  border-bottom: 1px solid var(--purple-vivid);
  padding: 1.5rem 2rem;
  z-index: 999;
}

.mobile-menu.open { display: block; }

.mobile-menu a {
  display: block;
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--white);
  text-decoration: none;
  padding: .6rem 0;
  border-bottom: 1px solid var(--grey-dim);
  letter-spacing: .1em;
}

.mobile-menu a::before {
  content: '//';
  color: var(--purple-vivid);
  margin-right: .5rem;
}


/* ════════════════════════════════════════
   5. HERO
   ════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

/* Animated grid background */
#hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(95, 28, 189, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 28, 189, .12) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: gridScroll 20s linear infinite;
}

@keyframes gridScroll {
  0%   { background-position: 0 0; }
  100% { background-position: 48px 48px; }
}

/* Deep background gradient */
#hero::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 20% 50%, rgba(23, 13, 133, .5) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 85% 20%, rgba(211, 74, 232, .15) 0%, transparent 60%),
    linear-gradient(180deg, #06040F 0%, #0E093D 60%, #06040F 100%);
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--green-neon);
  text-shadow: var(--glow-green);
  letter-spacing: .2em;
  margin-bottom: 1rem;
  animation: fadeSlideUp .8s ease both;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.02em;
  margin-bottom: .5rem;
  animation: fadeSlideUp .8s .15s ease both;
}

.hero-name .line1 { color: var(--white); }

.hero-name .line2 {
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
  position: relative;
}

/* Glitch effect on name */
.hero-name .line2::before,
.hero-name .line2::after {
  content: attr(data-text);
  position: absolute; top: 0; left: 0;
  width: 100%;
}

.hero-name .line2::before {
  color: var(--green-neon);
  clip: rect(0, 900px, 0, 0);
  animation: glitch1 4s infinite linear;
  text-shadow: none;
  opacity: .6;
}

.hero-name .line2::after {
  color: var(--yellow-neon);
  clip: rect(0, 900px, 0, 0);
  animation: glitch2 3.7s 1.5s infinite linear;
  text-shadow: none;
  opacity: .5;
}

@keyframes glitch1 {
  0%, 95%, 100% { clip: rect(0, 900px, 0, 0); transform: none; }
  96%           { clip: rect(24px, 900px, 46px, 0); transform: translateX(-4px); }
  97%           { clip: rect(60px, 900px, 82px, 0); transform: translateX(4px); }
  98%           { clip: rect(12px, 900px, 30px, 0); transform: translateX(-2px); }
  99%           { clip: rect(0, 900px, 0, 0); transform: none; }
}

@keyframes glitch2 {
  0%, 96%, 100% { clip: rect(0, 900px, 0, 0); transform: none; }
  97%           { clip: rect(40px, 900px, 60px, 0); transform: translateX(6px); }
  98%           { clip: rect(8px, 900px, 28px, 0); transform: translateX(-3px); }
  99%           { clip: rect(0, 900px, 0, 0); transform: none; }
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(.8rem, 2vw, 1rem);
  color: var(--yellow-neon);
  text-shadow: var(--glow-yellow);
  letter-spacing: .18em;
  margin-bottom: 1rem;
  animation: fadeSlideUp .8s .3s ease both;
}

.hero-roles {
  font-family: var(--font-mono);
  font-size: clamp(.68rem, 1.5vw, .82rem);
  letter-spacing: .12em;
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.hero-roles .role-line {
  display: flex;
  align-items: baseline;
  gap: 0;
  animation: fadeSlideUp .8s ease both;
}

.hero-roles .role-line:nth-child(1) { animation-delay: .45s; }
.hero-roles .role-line:nth-child(2) { animation-delay: .6s; }
.hero-roles .role-line:nth-child(3) { animation-delay: .75s; }

.hero-roles .role-prompt {
  color: var(--magenta);
}

.hero-roles .role-text {
  color: rgba(240,238,248,.7);
}

.hero-roles .role-dots {
  color: rgba(95,28,189,.6);
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  padding: 0 .4em;
}

.hero-roles .role-status {
  color: var(--green-neon);
  text-shadow: var(--glow-green);
  white-space: nowrap;
}

.hero-bio {
  font-size: 1.1rem;
  color: rgba(240, 238, 248, .7);
  max-width: 560px;
  margin-bottom: 2.5rem;
  font-weight: 300;
  animation: fadeSlideUp .8s .45s ease both;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeSlideUp .8s .6s ease both;
}

/* Hero avatar */
.hero-avatar {
  position: absolute;
  right: 4vw; top: 50%;
  transform: translateY(-50%);
  width: clamp(225px, 35vw, 450px);
  aspect-ratio: 0;
  border-radius: 4px;
  overflow: hidden;
  border: 2px solid var(--purple-vivid);
  box-shadow: var(--glow-purple), 0 0 60px rgba(95, 28, 189, .3);
  animation: fadeSlideLeft .8s .3s ease both;
  z-index: 2;
}

.hero-avatar::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(95, 28, 189, .34) 0%,
    rgba(211, 74, 232, .11) 50%,
    rgba(77, 250, 84, .06) 100%
  );
  z-index: 2;
}

.avatar-img-placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(160deg, #170D85 0%, #2a1060 60%, #0E093D 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .5rem;
}

.avatar-icon {
  font-size: 4rem;
  filter: drop-shadow(0 0 12px #D34AE8);
}

.avatar-label {
  font-family: var(--font-mono);
  font-size: .65rem;
  color: var(--magenta);
  letter-spacing: .15em;
  text-shadow: var(--glow-magenta);
}

/* Corner decorations on avatar */
.corner {
  position: absolute;
  width: 20px; height: 20px;
  z-index: 3;
}

.corner-tl {
  top: 0; left: 0;
  border-top: 2px solid var(--green-neon);
  border-left: 2px solid var(--green-neon);
}

.corner-br {
  bottom: 0; right: 0;
  border-bottom: 2px solid var(--yellow-neon);
  border-right: 2px solid var(--yellow-neon);
}

/* Hero stat pills */
.hero-stats {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  animation: fadeSlideUp .8s .75s ease both;
}

.stat-pill {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-left: 2px solid var(--purple-vivid);
  padding-left: .75rem;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--yellow-neon);
  text-shadow: var(--glow-yellow);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: .65rem;
  color: rgba(240, 238, 248, .5);
  letter-spacing: .1em;
  margin-top: .2rem;
}

/* Shared entry animations */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeSlideLeft {
  from { opacity: 0; transform: translate(24px, -50%); }
  to   { opacity: 1; transform: translate(0, -50%); }
}


/* ════════════════════════════════════════
   6. SECTION SHARED STYLES
   ════════════════════════════════════════ */
section {
  padding: 6rem 2rem;
  position: relative;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.section-num {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--green-neon);
  text-shadow: var(--glow-green);
  letter-spacing: .15em;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: .05em;
}

.section-title span {
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--purple-vivid), transparent);
}

/* Section divider rule */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--purple-vivid),
    var(--magenta),
    var(--purple-vivid),
    transparent
  );
  opacity: .4;
}

/* Shared button styles */
.btn {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .12em;
  padding: .75rem 2rem;
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: all .2s;
  border: none;
  display: inline-block;
}

.btn-primary {
  background: var(--purple-vivid);
  color: var(--white);
  border: 1px solid var(--magenta);
  box-shadow: var(--glow-purple), inset 0 0 20px rgba(211, 74, 232, .1);
}

.btn-primary:hover {
  background: var(--magenta);
  box-shadow: var(--glow-magenta);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--green-neon);
  border: 1px solid var(--green-neon);
  box-shadow: var(--glow-green);
}

.btn-outline:hover {
  background: rgba(77, 250, 84, .08);
  transform: translateY(-2px);
  box-shadow: 0 0 16px #4DFA54, 0 0 40px #4DFA5455;
}


/* ════════════════════════════════════════
   7. ABOUT
   ════════════════════════════════════════ */
#about {
  background: rgba(14, 9, 61, .35);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: rgba(240, 238, 248, .75);
  font-weight: 300;
  font-size: 1.05rem;
  margin-bottom: 1rem;
  line-height: 1.85;
}

/* Hidden lore terminal */
.hidden-terminal {
  margin-top: 2rem;
  background: rgba(6,4,15,.85);
  border: 1px solid rgba(95,28,189,.4);
  border-radius: 4px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: .8rem;
}

.hidden-terminal .terminal-bar {
  background: rgba(95,28,189,.15);
  padding: .45rem .85rem;
  display: flex;
  align-items: center;
  gap: .4rem;
  border-bottom: 1px solid rgba(95,28,189,.3);
}

.hidden-terminal .terminal-body {
  padding: .85rem 1rem;
  line-height: 1.9;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  margin-top: .4rem;
}

.terminal-input {
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--green-neon);
  caret-color: var(--green-neon);
  width: 100%;
  letter-spacing: .06em;
}

.terminal-input::placeholder {
  color: rgba(77,250,84,.35);
}

.terminal-output {
  margin-top: .4rem;
  line-height: 1.9;
}

.terminal-output .t-deny  { color: var(--magenta); text-shadow: var(--glow-magenta); }
.terminal-output .t-grant { color: var(--green-neon); text-shadow: var(--glow-green); }
.terminal-output .lore-link {
  color: var(--green-neon);
  text-shadow: var(--glow-green);
  text-decoration: none;
  border-bottom: 1px solid var(--green-neon);
  letter-spacing: .1em;
  transition: text-shadow .2s;
}
.terminal-output .lore-link:hover { text-shadow: 0 0 16px var(--green-neon); }

/* Terminal block component */
.terminal-block {
  background: rgba(6, 4, 15, .8);
  border: 1px solid var(--purple-vivid);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--glow-purple);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1rem;
  background: rgba(95, 28, 189, .2);
  border-bottom: 1px solid var(--purple-vivid);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-r { background: #FF5F57; }
.dot-y { background: #FEBC2E; }
.dot-g { background: #28C840; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: rgba(240, 238, 248, .4);
  letter-spacing: .1em;
  margin-left: auto;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 2;
  color: var(--green-neon);
}

.t-prompt  { color: var(--magenta); }
.t-cmd     { color: var(--white); }
.t-key     { color: var(--yellow-neon); }
.t-val     { color: rgba(240, 238, 248, .7); }
.t-comment { color: #5F1CBD; }

.t-cursor {
  display: inline-block;
  width: 8px; height: 1em;
  background: var(--green-neon);
  animation: blink .9s step-end infinite;
  vertical-align: text-bottom;
}

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


/* ════════════════════════════════════════
   8. CTF WRITE-UPS
   ════════════════════════════════════════ */
#ctf {
  overflow: hidden;
}

#ctf::after {
  content: 'CTF';
  position: absolute;
  right: -2rem; top: 50%;
  transform: translateY(-50%) rotate(90deg);
  font-family: var(--font-display);
  font-size: 12rem;
  font-weight: 900;
  color: rgba(95, 28, 189, .05);
  pointer-events: none;
  white-space: nowrap;
  letter-spacing: .1em;
}

.ctf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.ctf-card {
  background: rgba(6, 4, 15, .8);
  border: 1px solid var(--grey-dim);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color .25s, transform .25s, box-shadow .25s;
  position: relative;
}

.ctf-card:hover {
  border-color: var(--green-neon);
  transform: translateY(-4px);
  box-shadow: var(--glow-green);
}

.ctf-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0E093D 0%, #170D85 50%, #2a1060 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.ctf-img-inner {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 12px var(--green-neon));
  z-index: 2;
}

.ctf-img::before {
  content: '';
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    45deg,
    rgba(95, 28, 189, .08) 0px,
    rgba(95, 28, 189, .08) 1px,
    transparent 1px,
    transparent 12px
  );
}

.ctf-body { padding: 1.25rem; }

.ctf-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: .6rem;
}

.ctf-tag {
  font-family: var(--font-mono);
  font-size: .65rem;
  padding: .2rem .6rem;
  border-radius: 2px;
  background: rgba(95, 28, 189, .3);
  border: 1px solid var(--purple-vivid);
  color: var(--magenta);
  letter-spacing: .1em;
}

.ctf-difficulty {
  font-family: var(--font-mono);
  font-size: .65rem;
  color: var(--yellow-neon);
  text-shadow: var(--glow-yellow);
}

.ctf-title {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .5rem;
}

.ctf-desc {
  font-size: .88rem;
  color: rgba(240, 238, 248, .6);
  font-weight: 300;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.ctf-link {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--green-neon);
  text-decoration: none;
  letter-spacing: .12em;
  transition: text-shadow .2s;
}

.ctf-link:hover  { text-shadow: var(--glow-green); }
.ctf-link::after { content: ' →'; }


/* ════════════════════════════════════════
   9. ARTICLES
   ════════════════════════════════════════ */
#articles {
  background: rgba(14, 9, 61, .3);
}

.articles-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* CTF Navigator Terminal */
.ctf-terminal {
  background: rgba(6,4,15,.9);
  border: 1px solid var(--purple-vivid);
  border-radius: 4px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: .82rem;
  box-shadow: var(--glow-purple);
}

.ctf-terminal .terminal-body {
  padding: .85rem 1rem .25rem;
  min-height: 200px;
  max-height: 650px;
  overflow-y: auto;
  line-height: 1.9;
}

.ctf-terminal .terminal-body::-webkit-scrollbar { width: 4px; }
.ctf-terminal .terminal-body::-webkit-scrollbar-track { background: transparent; }
.ctf-terminal .terminal-body::-webkit-scrollbar-thumb { background: var(--purple-vivid); border-radius: 2px; }

.ctf-cmd-output { color: rgba(240,238,248,.75); }
.ctf-cmd-output .out-label { color: var(--yellow-neon); min-width: 120px; display: inline-block; }
.ctf-cmd-output .out-link  { color: var(--green-neon); text-shadow: var(--glow-green); text-decoration: none; border-bottom: 1px solid var(--green-neon); }
.ctf-cmd-output .out-link:hover { text-shadow: 0 0 16px var(--green-neon); }
.ctf-cmd-output .out-error { color: var(--magenta); }
.ctf-cmd-output .out-dim   { color: rgba(240,238,248,.35); }

.article-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 1.25rem 1.5rem;
  background: rgba(6, 4, 15, .6);
  border: 1px solid var(--grey-dim);
  border-radius: 4px;
  text-decoration: none;
  transition: border-color .25s, background .25s, transform .2s;
  position: relative;
  overflow: hidden;
}

.article-row::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--purple-vivid), var(--magenta));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .25s;
}

.article-row:hover {
  border-color: var(--purple-vivid);
  background: rgba(95, 28, 189, .08);
  transform: translateX(4px);
}

.article-row:hover::before { transform: scaleY(1); }

.article-date {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--green-neon);
  text-shadow: var(--glow-green);
  white-space: nowrap;
  letter-spacing: .08em;
}

.article-title {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 700;
  color: var(--white);
}

.article-subtitle {
  font-size: .85rem;
  color: rgba(240, 238, 248, .5);
  margin-top: .2rem;
  font-weight: 300;
}

.article-arrow {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--magenta);
  transition: transform .2s;
}

.article-row:hover .article-arrow { transform: translateX(4px); }


/* ════════════════════════════════════════
   10. CERTIFICATIONS
   ════════════════════════════════════════ */
#certs {
  overflow: hidden;
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.cert-card {
  background: rgba(6, 4, 15, .7);
  border: 1px solid var(--grey-dim);
  border-radius: 4px;
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: border-color .25s, box-shadow .25s;
}

.cert-card:hover {
  border-color: var(--yellow-neon);
  box-shadow: var(--glow-yellow);
}

.cert-badge {
  font-size: 2rem;
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px var(--yellow-neon));
}

.cert-name {
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 700;
  color: var(--yellow-neon);
  letter-spacing: .05em;
  margin-bottom: .25rem;
  line-height: 1.3;
}

.cert-org {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: rgba(240, 238, 248, .45);
  letter-spacing: .08em;
}


/* ════════════════════════════════════════
   13. CONTACT
   ════════════════════════════════════════ */
#contact {
  background: rgba(14, 9, 61, .5);
  text-align: center;
  overflow: hidden;
}

#contact::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(95, 28, 189, .15) 0%, transparent 70%);
  pointer-events: none;
}

.contact-tagline {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--green-neon);
  text-shadow: var(--glow-green);
  letter-spacing: .25em;
  margin-bottom: 1.5rem;
}

.contact-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 1rem;
}

.contact-title span {
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
}

.contact-sub {
  font-size: 1.05rem;
  color: rgba(240, 238, 248, .6);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.social-btn {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  padding: .65rem 1.4rem;
  border-radius: 2px;
  border: 1px solid var(--grey-dim);
  background: rgba(6, 4, 15, .6);
  color: var(--white);
  text-decoration: none;
  transition: all .2s;
  display: flex;
  align-items: center;
  gap: .5rem;
}

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


/* ════════════════════════════════════════
   14. FOOTER
   ════════════════════════════════════════ */
footer {
  padding: 2rem;
  border-top: 1px solid var(--grey-dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: rgba(240, 238, 248, .35);
  letter-spacing: .1em;
}

.footer-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--purple-vivid);
  letter-spacing: .08em;
}


/* ════════════════════════════════════════
   15. UTILITIES
   ════════════════════════════════════════ */

/* Use on any page's hero-like banner (subpages) */
.page-hero {
  min-height: 40vh;
  display: flex;
  align-items: flex-end;
  padding: 6rem 2rem 3rem;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 20% 50%, rgba(23, 13, 133, .4) 0%, transparent 70%),
    linear-gradient(180deg, #06040F 0%, #0E093D 80%, #06040F 100%);
}

.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(95, 28, 189, .1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 28, 189, .1) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: gridScroll 20s linear infinite;
}

/* Inline code / mono text highlight */
.mono {
  font-family: var(--font-mono);
  color: var(--green-neon);
  font-size: .9em;
}

/* Neon text helpers */
.text-magenta { color: var(--magenta); text-shadow: var(--glow-magenta); }
.text-green   { color: var(--green-neon); text-shadow: var(--glow-green); }
.text-yellow  { color: var(--yellow-neon); text-shadow: var(--glow-yellow); }
.text-purple  { color: var(--purple-vivid); text-shadow: var(--glow-purple); }


/* ════════════════════════════════════════
   16. RESPONSIVE
   ════════════════════════════════════════ */
@media (max-width: 768px) {
  nav { padding: .75rem 1rem; }
  .nav-links   { display: none; }
  .hamburger   { display: flex; }

  #hero        { padding: 5rem 1.25rem 3rem; }
  .hero-avatar { display: none; }
  .hero-stats  { gap: 1rem; }

  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .ctf-grid    { grid-template-columns: 1fr; }
  .certs-grid  { grid-template-columns: 1fr 1fr; }

  .article-row {
    grid-template-columns: 1fr auto;
    gap: .75rem;
  }
  .article-date { display: none; }

  section { padding: 4rem 1.25rem; }

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

  #ctf::after { display: none; }
}

@media (max-width: 480px) {
  .certs-grid  { grid-template-columns: 1fr; }
  .hero-cta    { flex-direction: column; }
  .btn         { text-align: center; }
}