/* ==========================================================================
   NASIRUDIN — Automation & Industrial Digitalization Engineer
   CSS Stylesheet — Industrial Dark Theme
   Author: Nasirudin | Version: 1.0
   ========================================================================== */

/* ─── Custom Properties ──────────────────────────────────────────────────── */
:root {
  --bg-primary:      #020c18;
  --bg-secondary:    #041022;
  --bg-card:         rgba(6, 22, 46, 0.7);
  --bg-glass:        rgba(0, 212, 255, 0.04);

  --accent-cyan:     #00d4ff;
  --accent-blue:     #0066ff;
  --accent-teal:     #00ffd5;
  --accent-amber:    #ffb400;
  --accent-glow:     rgba(0, 212, 255, 0.25);

  --text-primary:    #e8f4ff;
  --text-secondary:  #7a9ab8;
  --text-muted:      #3a5a78;

  --border-subtle:   rgba(0, 212, 255, 0.12);
  --border-active:   rgba(0, 212, 255, 0.45);

  --font-display:    'Orbitron', 'Rajdhani', sans-serif;
  --font-body:       'Exo 2', sans-serif;
  --font-mono:       'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:       4px;
  --radius-md:       8px;
  --radius-lg:       16px;
  --radius-xl:       24px;

  --shadow-glow:     0 0 30px rgba(0, 212, 255, 0.15), 0 0 60px rgba(0, 102, 255, 0.08);
  --shadow-card:     0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.08);
  --transition:      all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

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

/* ─── Scrollbar ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-cyan); border-radius: 3px; opacity: 0.5; }

/* ─── Noise / Texture Overlay ────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ─── Animated Background Grid ───────────────────────────────────────────── */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
  animation: gridShift 20s linear infinite;
}

@keyframes gridShift {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

/* ─── Ambient Glow Orbs ──────────────────────────────────────────────────── */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 12s ease-in-out infinite;
}
.orb-1 {
  width: 600px; height: 600px;
  top: -200px; left: -200px;
  background: radial-gradient(circle, rgba(0,102,255,0.12) 0%, transparent 70%);
  animation-delay: 0s;
}
.orb-2 {
  width: 500px; height: 500px;
  bottom: -150px; right: -150px;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
  animation-delay: -6s;
}
.orb-3 {
  width: 400px; height: 400px;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  background: radial-gradient(circle, rgba(0,255,213,0.04) 0%, transparent 70%);
  animation-delay: -3s;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-40px) scale(1.05); }
}

/* ─── Section Wrappers ───────────────────────────────────────────────────── */
section { position: relative; z-index: 1; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Section Header ─────────────────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 4px 14px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.section-title span {
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-line {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  margin: 16px auto 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(2, 12, 24, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo .logo-bracket {
  color: var(--accent-cyan);
  font-weight: 300;
}
.nav-logo .logo-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 1px;
  background: var(--accent-cyan);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--accent-cyan); }
.nav-links a:hover::after { left: 14px; right: 14px; }

.nav-cta {
  font-family: var(--font-mono) !important;
  font-size: 11px !important;
  color: var(--accent-cyan) !important;
  border: 1px solid var(--border-active) !important;
  background: rgba(0,212,255,0.06) !important;
  padding: 8px 18px !important;
  border-radius: var(--radius-sm) !important;
}
.nav-cta:hover {
  background: rgba(0,212,255,0.15) !important;
  box-shadow: 0 0 20px rgba(0,212,255,0.2) !important;
}
.nav-cta::after { display: none !important; }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
  transition: var(--transition);
}
.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;
  align-items: center;
  padding: 100px 24px 60px;
  position: relative;
  overflow: hidden;
}
.hero-scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0.3;
  animation: scanLine 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes scanLine {
  0%   { top: 0; opacity: 0; }
  10%  { opacity: 0.3; }
  90%  { opacity: 0.3; }
  100% { top: 100%; opacity: 0; }
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 80px;
  align-items: center;
}
.hero-content { animation: fadeInLeft 1s ease both; }
.hero-visual  { animation: fadeInRight 1s ease 0.2s both; }

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

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-teal);
  margin-bottom: 24px;
  padding: 6px 14px;
  background: rgba(0,255,213,0.06);
  border: 1px solid rgba(0,255,213,0.2);
  border-radius: 2px;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-teal);
  box-shadow: 0 0 8px var(--accent-teal);
  animation: pulse 1.5s ease-in-out infinite;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.hero-name .name-accent {
  display: block;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-teal) 50%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease infinite;
  background-size: 200% 200%;
}
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%       { background-position: 100% 50%; }
}

.hero-headline {
  font-family: var(--font-body);
  font-size: clamp(14px, 2vw, 18px);
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 28px;
  border-left: 2px solid var(--accent-cyan);
  padding-left: 16px;
  line-height: 1.4;
}
.hero-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bg-primary);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-cyan));
  opacity: 0;
  transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,255,0.4); }
.btn-primary:hover::before { opacity: 1; }
.btn-primary span { position: relative; z-index: 1; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: transparent;
  border: 1px solid var(--border-active);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(0,212,255,0.08);
  box-shadow: 0 0 20px rgba(0,212,255,0.15);
  transform: translateY(-2px);
}

/* Hero Stats Bar */
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}
.hero-stat-item { text-align: left; }
.stat-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 900;
  color: var(--accent-cyan);
  line-height: 1;
  display: block;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 4px;
  display: block;
}

/* Hero Visual — Profile Card */
.hero-profile-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card), 0 0 60px rgba(0,212,255,0.08);
  overflow: hidden;
}
.hero-profile-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-teal), transparent);
}
.profile-img-wrapper {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto 24px;
}
.profile-img-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: conic-gradient(var(--accent-cyan), var(--accent-blue), var(--accent-teal), var(--accent-cyan));
  animation: spinRing 4s linear infinite;
}
@keyframes spinRing {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.profile-img-ring::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--bg-card);
}
.profile-img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}
.profile-badge {
  position: absolute;
  bottom: 4px; right: 4px;
  width: 28px; height: 28px;
  background: var(--accent-teal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-size: 14px;
  box-shadow: 0 0 12px var(--accent-teal);
}
.profile-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.profile-role {
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
  color: var(--accent-cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.profile-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: rgba(0,212,255,0.06);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 2px;
}

/* Terminal Window decoration */
.terminal-deco {
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  background: rgba(0,212,255,0.03);
  border-top: 1px solid var(--border-subtle);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.terminal-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  flex: 1;
}
.terminal-cursor {
  display: inline-block;
  width: 8px; height: 14px;
  background: var(--accent-cyan);
  animation: blink 1s step-end infinite;
  vertical-align: middle;
  margin-left: 2px;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   ABOUT SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
#about {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(0,212,255,0.02) 50%, transparent);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}
.about-text p strong {
  color: var(--accent-cyan);
  font-weight: 600;
}
.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}
.highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.highlight-card:hover {
  border-color: var(--border-active);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}
.highlight-icon { font-size: 24px; margin-bottom: 10px; }
.highlight-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.highlight-value {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* About Visual — Animated Chart */
.about-visual {
  position: relative;
}
.radar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.radar-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), var(--accent-cyan), transparent);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SKILLS SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
#skills { padding: 100px 0; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.skill-category::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(0,212,255,0.05) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: var(--transition);
}
.skill-category:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}
.skill-category:hover::after { opacity: 1; }

.category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}
.category-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(0,212,255,0.1);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.category-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.skill-list { display: flex; flex-direction: column; gap: 14px; }
.skill-item { }
.skill-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.skill-name {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}
.skill-pct {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-cyan);
}
.skill-bar {
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  width: 0%;
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
}
.skill-fill::after {
  content: '';
  position: absolute;
  right: 0; top: -2px;
  width: 8px; height: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

/* Badge skills */
.skill-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: rgba(0,102,255,0.08);
  border: 1px solid rgba(0,102,255,0.2);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: default;
}
.skill-badge:hover {
  color: var(--accent-cyan);
  border-color: var(--border-active);
  background: rgba(0,212,255,0.08);
  box-shadow: 0 0 12px rgba(0,212,255,0.12);
}

/* ═══════════════════════════════════════════════════════════════════════════
   PROJECTS SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
#projects {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(0,102,255,0.02) 50%, transparent);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative;
  display: flex;
  flex-direction: column;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan), var(--accent-teal));
  opacity: 0;
  transition: var(--transition);
}
.project-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
  transform: translateY(-6px);
}
.project-card:hover::before { opacity: 1; }

.project-header {
  padding: 24px 24px 0;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.project-icon-wrap {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: rgba(0,212,255,0.08);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  transition: var(--transition);
}
.project-card:hover .project-icon-wrap {
  background: rgba(0,212,255,0.15);
  border-color: var(--border-active);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}
.project-meta { flex: 1; }
.project-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.project-type {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
}

.project-body { padding: 20px 24px; flex: 1; }
.project-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.project-features { list-style: none; margin-bottom: 20px; }
.project-features li {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  padding: 3px 0 3px 16px;
  position: relative;
}
.project-features li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-size: 14px;
  line-height: 1;
  top: 3px;
}

.project-tech { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 0; }
.tech-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--accent-blue);
  background: rgba(0,102,255,0.08);
  border: 1px solid rgba(0,102,255,0.18);
  padding: 3px 8px;
  border-radius: 2px;
}

.project-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.project-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-teal);
}
.status-led {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-teal);
  box-shadow: 0 0 8px var(--accent-teal);
  animation: pulse 2s ease-in-out infinite;
}
.project-link {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.project-link:hover { text-shadow: 0 0 10px var(--accent-cyan); }

/* ═══════════════════════════════════════════════════════════════════════════
   EXPERIENCE SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
#experience { padding: 100px 0; }
.experience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.exp-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.exp-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 2px 0 0 2px;
  opacity: 0;
  transition: var(--transition);
}
.exp-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}
.exp-card:hover::before { opacity: 1; }

.exp-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}
.exp-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.exp-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.exp-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.exp-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 3px 8px;
  border-radius: 2px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONTACT SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
#contact {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(0,212,255,0.02) 50%, transparent);
}
.contact-wrapper {
  max-width: 800px;
  margin: 0 auto;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 56px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan), var(--accent-teal), var(--accent-blue));
  background-size: 200% 100%;
  animation: gradientMove 3s linear infinite;
}
@keyframes gradientMove {
  0%   { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}
.contact-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.contact-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 48px;
  line-height: 1.7;
}
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}
.contact-link-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  background: rgba(0,212,255,0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition);
  text-align: left;
}
.contact-link-item:hover {
  border-color: var(--border-active);
  background: rgba(0,212,255,0.08);
  box-shadow: 0 0 20px rgba(0,212,255,0.1);
  transform: translateX(4px);
}
.contact-link-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0,212,255,0.1);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-link-info { flex: 1; }
.contact-link-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 3px;
}
.contact-link-value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-cyan);
  font-weight: 500;
}
.contact-link-arrow {
  font-size: 16px;
  color: var(--text-muted);
  transition: var(--transition);
}
.contact-link-item:hover .contact-link-arrow {
  color: var(--accent-cyan);
  transform: translateX(4px);
}

/* ═══════════════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 24px;
  position: relative;
  z-index: 1;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.footer-copy span { color: var(--accent-cyan); }
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent-cyan); }

/* ═══════════════════════════════════════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
   ═══════════════════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ═══════════════════════════════════════════════════════════════════════════
   BACK TO TOP
   ═══════════════════════════════════════════════════════════════════════════ */
#back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  background: rgba(0,212,255,0.1);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  text-decoration: none;
}
#back-top.visible {
  opacity: 1;
  pointer-events: auto;
}
#back-top:hover {
  background: rgba(0,212,255,0.2);
  box-shadow: 0 0 20px rgba(0,212,255,0.3);
  transform: translateY(-2px);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE
   ═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .hero-inner    { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual   { max-width: 400px; margin: 0 auto; width: 100%; }
  .about-grid    { grid-template-columns: 1fr; }
  .experience-grid { grid-template-columns: 1fr; }
  .hero-stats    { gap: 20px; }
  .contact-card  { padding: 36px 24px; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(2,12,24,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 999;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a { padding: 12px 16px; font-size: 13px; }
  .nav-toggle   { display: flex; }

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

  .hero-stats { flex-wrap: wrap; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { justify-content: center; }
}

@media (max-width: 480px) {
  section { padding-left: 0; padding-right: 0; }
  .section-title { font-size: 26px; }
  .hero-name { font-size: 36px; }
  #back-top { bottom: 16px; right: 16px; }
}