/* ================================================================
   CYBERSECURITY PORTFOLIO — style.css
   Theme: Dark / Hacker / Terminal CLI
   Colors: Neon Green, Cyber Blue, Crimson Red on Deep Black
   ================================================================ */

/* ── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Base palette */
  --bg-primary: #0a0a0f;
  --bg-secondary: #0d0d14;
  --bg-card: rgba(17, 17, 25, 0.85);
  --bg-card-hover: rgba(22, 22, 31, 0.95);
  --bg-terminal: rgba(12, 12, 18, 0.9);
  --bg-terminal-bar: #1a1a24;

  /* Text */
  --text-primary: #e0e0e8;
  --text-secondary: #8a8a9a;
  --text-muted: #55556a;

  /* Accent colors */
  --green: #00e676;
  --green-rgb: 0, 230, 118;
  --green-dim: #00cc6a;
  --green-glow: rgba(0, 230, 118, 0.35);
  --blue: #00b4ff;
  --blue-rgb: 0, 180, 255;
  --blue-dim: #0090cc;
  --blue-glow: rgba(0, 180, 255, 0.3);
  --red: #ff2d55;
  --red-dim: #cc2244;
  --red-glow: rgba(255, 45, 85, 0.3);
  --yellow: #ffd60a;
  --yellow-glow: rgba(255, 214, 10, 0.3);
  --purple: #bf5af2;
  --purple-glow: rgba(191, 90, 242, 0.3);

  /* Borders */
  --border: #1e1e2a;
  --border-glow: rgba(0, 230, 118, 0.15);

  /* Typography */
  --font-mono: 'Fira Code', 'Courier New', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --nav-height: 60px;
  --section-padding: 100px 0;
  --container-width: 1200px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-med: 0.35s ease;
  --transition-slow: 0.6s ease;
}

[data-theme="amber"] {
  --green: #ffb000;
  --green-rgb: 255, 176, 0;
  --green-dim: #cc8e00;
  --green-glow: rgba(255, 176, 0, 0.35);
  --blue: #ffa500;
  --blue-rgb: 255, 165, 0;
  --blue-dim: #cc8400;
  --blue-glow: rgba(255, 165, 0, 0.3);
  --border-glow: rgba(255, 176, 0, 0.15);
}

body.booting {
  overflow: hidden;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

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

/* ── Boot Screen ───────────────────────────────────────────── */
.boot-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #050508;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 40px;
  transition: opacity 0.6s ease-out;
}
.boot-screen--done {
  opacity: 0;
  pointer-events: none;
}
.boot-screen__inner {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.boot-line {
  margin-bottom: 6px;
  opacity: 0;
}
.boot-line--visible {
  opacity: 1;
}
.boot-line--ready {
  margin-top: 16px;
  color: var(--green);
}
.boot-ok {
  color: var(--green);
  float: right;
}

/* ── Scanlines Overlay ─────────────────────────────────────── */
.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* ── Matrix Canvas ─────────────────────────────────────────── */
#matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.06;
}

/* ── Container ─────────────────────────────────────────────── */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Utility Classes ───────────────────────────────────────── */
.highlight-green { color: var(--green); }
.highlight-blue  { color: var(--blue); }
.highlight-red   { color: var(--red); }

/* ── Glitch Effect ─────────────────────────────────────────── */
.glitch {
  position: relative;
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
}
.glitch:hover::before {
  opacity: 0.8;
  color: var(--red);
  animation: glitch-1 0.3s linear;
  clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
}
.glitch:hover::after {
  opacity: 0.8;
  color: var(--blue);
  animation: glitch-2 0.3s linear;
  clip-path: polygon(0 66%, 100% 66%, 100% 100%, 0 100%);
}

@keyframes glitch-1 {
  0%   { transform: translate(0); }
  20%  { transform: translate(-3px, 3px); }
  40%  { transform: translate(3px, -3px); }
  60%  { transform: translate(-2px, 1px); }
  80%  { transform: translate(2px, -2px); }
  100% { transform: translate(0); }
}
@keyframes glitch-2 {
  0%   { transform: translate(0); }
  20%  { transform: translate(3px, -3px); }
  40%  { transform: translate(-3px, 3px); }
  60%  { transform: translate(2px, -1px); }
  80%  { transform: translate(-2px, 2px); }
  100% { transform: translate(0); }
}

/* ── Scroll Animation ──────────────────────────────────────── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================================
   NAVIGATION
   ================================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid;
  border-image: linear-gradient(90deg, transparent 0%, var(--border) 50%, transparent 100%) 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 1000;
  transition: background var(--transition-med);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.96);
  box-shadow: 0 2px 30px rgba(0, 255, 136, 0.05);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--green);
}
.nav__cursor {
  animation: blink 1s step-end infinite;
}

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

.nav__links {
  display: flex;
  gap: 4px;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 4px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.nav__link:hover,
.nav__link.active {
  color: var(--green);
  background: rgba(0, 255, 136, 0.06);
}

[data-theme="amber"] .nav__link:hover,
[data-theme="amber"] .nav__link.active {
  background: rgba(255, 176, 0, 0.06);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav__theme-switch {
  display: flex;
  align-items: center;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.theme-switch__slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 24px;
  transition: .4s;
}

.theme-switch__slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 4px;
  bottom: 4px;
  background-color: var(--green);
  border-radius: 50%;
  transition: .4s;
  box-shadow: 0 0 8px var(--green-glow);
}

[data-theme="amber"] .theme-switch__slider:before {
  transform: translateX(20px);
}


.nav__resume-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bg-primary);
  background: var(--green);
  padding: 8px 16px;
  border-radius: 4px;
  transition: all var(--transition-fast);
  text-decoration: none;
  box-shadow: 0 0 10px var(--green-glow);
}
.nav__resume-btn:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  box-shadow: 0 0 15px var(--green-glow);
}

/* Mobile Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
  transition: all var(--transition-fast);
}
.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ================================================================
   HERO SECTION
   ================================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 40px) 24px 90px;
  position: relative;
}

.hero__terminal {
  width: 100%;
  max-width: 780px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-terminal);
  box-shadow:
    0 0 40px rgba(0, 255, 136, 0.05),
    0 20px 80px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 0.8s ease-out;
}

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

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-terminal-bar);
  border-bottom: 1px solid var(--border);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal__dot--red    { background: #ff5f57; }
.terminal__dot--yellow { background: #febc2e; }
.terminal__dot--green  { background: #28c840; }

.terminal__title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 8px;
}

.terminal__body {
  padding: 24px 20px;
  min-height: 380px;
  max-height: 480px;
  overflow-y: auto;
  scroll-behavior: smooth;
  cursor: text;
}
.terminal__body::-webkit-scrollbar {
  width: 4px;
}
.terminal__body::-webkit-scrollbar-thumb {
  background: var(--border);
}

.terminal__line {
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.terminal__prompt {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--green);
  font-weight: 600;
  white-space: nowrap;
}

.terminal__command {
  color: var(--text-primary);
}

.terminal__output {
  margin: 6px 0 18px 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.terminal__output--interactive {
  padding-left: 14px;
  border-left: 2px solid var(--border);
}

.terminal__output--hint {
  margin-top: -8px;
  margin-bottom: 18px;
}

.term-header { color: var(--green); font-weight: 600; }
.term-cmd { color: var(--green-dim); font-weight: 600; }
.term-name { color: var(--blue); font-size: 1rem; font-weight: 600; }
.term-sub { color: var(--text-primary); }
.term-progress { color: var(--yellow); }
.term-category { color: var(--purple); width: 60px; display: inline-block; }
.term-link { color: var(--blue); text-decoration: underline; text-decoration-color: var(--border); }
.term-link:hover { color: var(--green); text-decoration-color: var(--green); }
.term-error { color: var(--red); }
.term-hint { color: var(--text-muted); font-size: 0.75rem; }

.terminal__input-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.terminal__input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.terminal__mirror {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  white-space: pre;
}

.terminal__input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  color: transparent;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
  caret-color: transparent;
}

.terminal__caret-input {
  color: var(--green);
  animation: blink 0.8s step-end infinite;
  font-size: 0.9rem;
}
.terminal__input:focus + .terminal__caret-input,
.terminal__input:focus ~ .terminal__caret-input {
  display: inline;
}
.terminal__input:not(:focus) + .terminal__caret-input,
.terminal__input:not(:focus) ~ .terminal__caret-input {
  opacity: 0.3;
  animation: none;
}

/* Scroll Indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  animation: float 2.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.hero__scroll-arrow {
  font-size: 0.9rem;
  color: var(--green-dim);
}

/* ================================================================
   SECTION — Shared
   ================================================================ */
.section {
  padding: var(--section-padding);
  position: relative;
}

/* Section backgrounds are kept transparent natively below so the matrix animation remains visible consistently across all pages. */

.section__title {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--green);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.section__subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 48px;
}

/* ================================================================
   EDUCATION
   ================================================================ */
.edu {
  margin-bottom: 60px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-card);
}

.edu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--bg-terminal-bar);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}

.edu__scan {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--blue);
}

.edu__status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--green);
  padding: 3px 10px;
  border: 1px solid var(--green-dim);
  border-radius: 3px;
}

.edu__entries {
  padding: 20px;
}

.edu__entry {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.edu__entry:last-child {
  border-bottom: none;
}

.edu__icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.edu__degree {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 6px;
}

.edu__school,
.edu__year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 3px;
}

/* ================================================================
   SKILLS GRID
   ================================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.skill-card {
  background: rgba(17, 17, 25, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 30px 26px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(var(--green-rgb), 0.02), 0 8px 32px rgba(0, 0, 0, 0.3);
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--green), var(--blue));
  opacity: 0;
  transition: opacity var(--transition-med);
}

.skill-card:hover {
  border-color: rgba(var(--green-rgb), 0.3);
  background: rgba(17, 17, 25, 0.55);
  transform: translateY(-6px);
  box-shadow: inset 0 0 20px rgba(var(--green-rgb), 0.05), 0 12px 40px rgba(var(--green-rgb), 0.12);
}

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

.skill-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.skill-card__icon {
  font-size: 1.4rem;
}

.skill-card__title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-card__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px; /* Reduced from 20px since there's no bar below it */
}

.skill-tag {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 16px;
  border-radius: 8px;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.skill-tag i {
  font-size: 1.15rem;
  color: var(--green);
  transition: all 0.3s ease;
  filter: drop-shadow(0 0 8px var(--green-glow));
}

.skill-tag:hover {
  background: rgba(var(--green-rgb), 0.08);
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 20px rgba(var(--green-rgb), 0.2), inset 0 0 10px rgba(var(--green-rgb), 0.1);
  transform: translateY(-3px) scale(1.02);
}

/* ================================================================
   SKILL TREE / ROADMAP
   ================================================================ */
.roadmap-section {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(var(--green-rgb), 0.02) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(var(--blue-rgb), 0.02) 0%, transparent 60%),
    transparent;
}

.skill-tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

/* Root Node */
.tree-node--root {
  width: 100%;
  max-width: 480px;
}

.node-content {
  padding: 20px 24px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(17, 17, 25, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: inset 0 0 10px rgba(var(--green-rgb), 0.02), 0 4px 16px rgba(0, 0, 0, 0.2);
}

.node-content h3,
.node-content h4 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
  margin: 8px 0 6px;
}
.node-content h4 {
  font-size: 0.82rem;
}

.node-content p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.node-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Status Styles */
.node-content--acquired {
  border-color: var(--green-dim);
  box-shadow: 0 0 20px rgba(var(--green-rgb), 0.08), inset 0 0 20px rgba(var(--green-rgb), 0.03);
}
.node-content--acquired .node-status {
  color: var(--green);
  text-shadow: 0 0 8px var(--green-glow);
}

.node-content--progress {
  border-color: var(--yellow);
  box-shadow: 0 0 20px rgba(255, 214, 10, 0.06);
  animation: pulse-border 2.5s ease-in-out infinite;
}
.node-content--progress .node-status {
  color: var(--yellow);
  animation: blink-status 1.5s step-end infinite;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 15px rgba(255, 214, 10, 0.05); }
  50%      { box-shadow: 0 0 25px rgba(255, 214, 10, 0.12); }
}
@keyframes blink-status {
  50% { opacity: 0.4; }
}

.node-content--target {
  border-color: rgba(255, 255, 255, 0.1);
  opacity: 0.55;
  filter: grayscale(0.3);
}
.node-content--target .node-status {
  color: var(--text-muted);
}
.node-content--target:hover {
  opacity: 0.85;
  border-color: rgba(var(--green-rgb), 0.2);
  transform: translateY(-2px);
}

/* Tree Connectors */
.tree-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding: 0;
}

.connector-line--vertical {
  width: 2px;
  height: 40px;
  background: var(--green-dim);
  box-shadow: 0 0 6px var(--green-glow);
}

.connector-split {
  width: 80%;
  max-width: 900px;
  display: flex;
  justify-content: center;
}

.connector-line--horizontal {
  width: 100%;
  height: 2px;
  background: var(--green-dim);
  box-shadow: 0 0 6px var(--green-glow);
}

/* Branches */
.tree-branches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  width: 100%;
  max-width: 1100px;
  margin-top: 0;
  position: relative;
}

.tree-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  position: relative;
}

.tree-branch::before {
  content: '';
  width: 2px;
  height: 30px;
  background: var(--green-dim);
  box-shadow: 0 0 6px var(--green-glow);
}

.branch-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 6px 16px;
  border-radius: 4px;
  margin-bottom: 16px;
  text-align: center;
}

.branch-label--infra {
  color: var(--blue);
  background: rgba(0, 180, 255, 0.08);
  border: 1px solid rgba(0, 180, 255, 0.2);
}
.branch-label--blue {
  color: var(--purple);
  background: rgba(191, 90, 242, 0.08);
  border: 1px solid rgba(191, 90, 242, 0.2);
}
.branch-label--red {
  color: var(--red);
  background: rgba(255, 45, 85, 0.08);
  border: 1px solid rgba(255, 45, 85, 0.2);
}

.branch-nodes {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.branch-nodes .tree-node {
  width: 100%;
}

.node-arrow {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--green-dim);
  transform: rotate(90deg);
  padding: 4px;
}

/* ================================================================
   CTF WRITEUPS
   ================================================================ */
.ctf-section {
  background: transparent;
}

.ctf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.ctf-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-med);
}

.ctf-card:hover {
  border-color: var(--blue-dim);
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(0, 180, 255, 0.06);
}

.ctf-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--bg-terminal-bar);
  border-bottom: 1px solid var(--border);
}

.ctf-card__id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.ctf-card__category {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 3px;
  letter-spacing: 0.5px;
}

.ctf-card__category--forensics {
  color: var(--blue);
  background: rgba(0, 180, 255, 0.1);
  border: 1px solid rgba(0, 180, 255, 0.2);
}
.ctf-card__category--web {
  color: var(--green);
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.2);
}
.ctf-card__category--pwn {
  color: var(--red);
  background: rgba(255, 45, 85, 0.1);
  border: 1px solid rgba(255, 45, 85, 0.2);
}
.ctf-card__category--crypto {
  color: var(--purple);
  background: rgba(191, 90, 242, 0.1);
  border: 1px solid rgba(191, 90, 242, 0.2);
}

.ctf-card__title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 18px 20px 0;
}

.ctf-card__meta {
  display: flex;
  gap: 20px;
  padding: 10px 20px;
  flex-wrap: wrap;
}

.ctf-card__field {
  display: flex;
  gap: 6px;
  align-items: center;
}

.ctf-card__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.ctf-card__value {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.ctf-card__value--easy   { color: var(--green); }
.ctf-card__value--medium { color: var(--yellow); }
.ctf-card__value--hard   { color: var(--red); }

.ctf-card__tools {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px 20px 12px;
}

.ctf-tool {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--green-dim);
  background: rgba(0, 255, 136, 0.04);
  border: 1px solid rgba(0, 255, 136, 0.1);
  padding: 2px 8px;
  border-radius: 3px;
}

.ctf-card__summary {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.ctf-card__summary .ctf-card__label {
  display: block;
  margin-bottom: 6px;
}

.ctf-card__summary p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.ctf-card__footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  text-align: right;
}

.ctf-card__status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1px;
}
.ctf-card__status--solved {
  color: var(--green);
  text-shadow: 0 0 8px var(--green-glow);
}

/* ================================================================
   BLOG / FIELD NOTES
   ================================================================ */
.blog-section {
  background: transparent;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.blog-grid--full {
  max-width: 900px;
  margin: 0 auto;
  grid-template-columns: 1fr;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
}

.blog-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--green);
  opacity: 0;
  transition: opacity var(--transition-med);
}

.blog-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 5px 25px rgba(0, 255, 136, 0.05);
}

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

.blog-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.blog-card__date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.blog-card__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.blog-card__tag--blue { color: var(--blue); background: rgba(0, 180, 255, 0.08); border: 1px solid rgba(0, 180, 255, 0.2); }
.blog-card__tag--infra { color: var(--purple); background: rgba(191, 90, 242, 0.08); border: 1px solid rgba(191, 90, 242, 0.2); }
.blog-card__tag--red { color: var(--red); background: rgba(255, 45, 85, 0.08); border: 1px solid rgba(255, 45, 85, 0.2); }

.blog-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.blog-card__excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.blog-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.blog-card__tech {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 3px;
}

.blog-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.blog-card__read-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.blog-card__status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--green);
}

/* Blog Filters and Buttons */
.blog-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
}

.blog-filter {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.blog-filter:hover,
.blog-filter.active {
  color: var(--green);
  border-color: var(--green-dim);
  background: rgba(0, 255, 136, 0.05);
}

.blog-card.hidden {
  display: none !important;
}

.blog-card__btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.blog-card__btn:hover {
  color: var(--text-primary);
  text-shadow: 0 0 8px var(--green-glow);
}

/* ================================================================
   CONTACT
   ================================================================ */
.contact-section {
  background: transparent;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all var(--transition-med);
}

.contact-link:hover {
  border-color: var(--green-dim);
  background: var(--bg-card-hover);
  transform: translateX(6px);
  box-shadow: 0 4px 20px rgba(0, 255, 136, 0.06);
}

.contact-link__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-link__info {
  flex: 1;
  min-width: 0;
}

.contact-link__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 2px;
}

.contact-link__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--green);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-link__arrow {
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: transform var(--transition-fast);
}
.contact-link:hover .contact-link__arrow {
  transform: translateX(4px);
  color: var(--green);
}

/* Terminal Form Block */
.terminal-form-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.terminal-form__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--bg-terminal-bar);
  border-bottom: 1px solid var(--border);
}

.terminal-form__icon {
  font-size: 1.1rem;
}

.terminal-form__title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 1px;
}

.terminal-form {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.terminal-form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.terminal-form__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green);
}

.terminal-form__input,
.terminal-form__textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 8px 0;
  outline: none;
  transition: border-color var(--transition-fast);
}

.terminal-form__input:focus,
.terminal-form__textarea:focus {
  border-bottom-color: var(--green);
}

.terminal-form__textarea {
  resize: vertical;
  min-height: 80px;
}

.terminal-form__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 8px;
}

.terminal-form__btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--bg-primary);
  background: var(--green);
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 0 10px var(--green-glow);
}

.terminal-form__btn:hover {
  background: var(--text-primary);
  box-shadow: 0 0 15px var(--green-glow);
}

/* ================================================================
   PAGE HEADER (for ctf.html, contact.html)
   ================================================================ */
.page-header {
  padding: calc(var(--nav-height) + 60px) 0 48px;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(0, 255, 136, 0.03) 0%, transparent 50%),
    transparent;
  border-bottom: 1px solid;
  border-image: linear-gradient(90deg, transparent 0%, var(--border) 50%, transparent 100%) 1;
}

.page-header__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-bottom: 20px;
}

.page-header__back {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.page-header__back:hover {
  color: var(--green);
}

.page-header__sep {
  color: var(--text-muted);
}

.page-header__current {
  color: var(--green);
}

.page-header__title {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--green);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.page-header__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

.page-header__stats {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.stat-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.stat-chip__label {
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.stat-chip__value {
  font-weight: 600;
}

/* ================================================================
   CTA BUTTON (Terminal-style link)
   ================================================================ */
.section__cta {
  text-align: center;
  margin-top: 40px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  padding: 16px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all var(--transition-med);
  text-decoration: none;
}

.cta-button:hover {
  border-color: var(--green-dim);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 255, 136, 0.08);
}

.cta-button__prompt {
  font-size: 0.75rem;
  color: var(--green);
  font-weight: 600;
}

.cta-button__text {
  font-size: 0.85rem;
  color: var(--text-primary);
}

.cta-button__arrow {
  font-size: 1rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
}
.cta-button:hover .cta-button__arrow {
  transform: translateX(4px);
  color: var(--green);
}

.cta-button--contact {
  margin-top: 24px;
}

/* ================================================================
   CONTACT PREVIEW (Landing page teaser)
   ================================================================ */
.contact-preview-section {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(0, 255, 136, 0.02) 0%, transparent 60%),
    transparent;
  border-top: 1px solid;
  border-image: linear-gradient(90deg, transparent 0%, var(--border) 50%, transparent 100%) 1;
}

.contact-preview {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.contact-preview__text {
  margin-bottom: 32px;
}

.contact-preview__text .section__title {
  margin-bottom: 10px;
}

.contact-preview__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.contact-preview__links {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.contact-preview__pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  padding: 12px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all var(--transition-med);
  text-decoration: none;
}

.contact-preview__pill:hover {
  border-color: var(--green-dim);
  background: var(--bg-card-hover);
  color: var(--green);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 255, 136, 0.08);
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  padding: 40px 0;
  border-top: 1px solid;
  border-image: linear-gradient(90deg, transparent 0%, var(--border) 50%, transparent 100%) 1;
  text-align: center;
}

.footer__text {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.footer__sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .tree-branches {
    grid-template-columns: 1fr;
    gap: 32px;
    max-width: 480px;
  }

  .connector-split {
    display: none;
  }

  .tree-branch::before {
    height: 20px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --nav-height: 56px;
    --section-padding: 70px 0;
  }

  .nav {
    padding: 0 16px;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    padding: 80px 24px 40px;
    gap: 4px;
    border-left: 1px solid var(--border);
    transition: right var(--transition-med);
    z-index: 999;
  }

  .nav__links.open {
    right: 0;
  }

  .nav__link {
    font-size: 0.9rem;
    padding: 12px 16px;
  }

  .hero {
    padding: calc(var(--nav-height) + 24px) 16px 60px;
  }

  .terminal__body {
    padding: 18px 14px;
  }

  .terminal__line {
    font-size: 0.78rem;
  }

  .terminal__result {
    font-size: 0.95rem;
  }

  .terminal__output--mission p {
    font-size: 0.72rem;
  }

  .container {
    padding: 0 16px;
  }

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

  .skill-card {
    padding: 22px 18px;
  }

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

  .branch-nodes {
    gap: 6px;
  }

  .node-content {
    padding: 14px 16px;
  }

  .node-content h3,
  .node-content h4 {
    font-size: 0.78rem;
  }

  .resume-download {
    padding: 14px 24px;
    font-size: 0.82rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .edu__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-header {
    padding: calc(var(--nav-height) + 32px) 0 32px;
  }

  .page-header__title {
    font-size: 1.4rem;
  }

  .page-header__stats {
    gap: 10px;
  }

  .cta-button {
    padding: 12px 18px;
    font-size: 0.8rem;
  }

  .cta-button__prompt {
    display: none;
  }

  .contact-preview__pill {
    padding: 10px 16px;
    font-size: 0.75rem;
  }
}

/* Small mobile */
@media (max-width: 420px) {
  .terminal__prompt {
    font-size: 0.68rem;
  }

  .terminal__line {
    font-size: 0.7rem;
  }

  .section__title {
    font-size: 1.1rem;
  }

  .resume-download {
    display: none; /* Hide old resume button styling on mobile since it's removed */
  }

  .nav__actions {
    margin-top: 24px;
    width: 100%;
    flex-direction: row;
    justify-content: center;
  }
  .nav__resume-btn {
    padding: 10px 20px;
  }

  .contact-preview__links {
    flex-direction: column;
    align-items: center;
  }
}