/* =============================================
   FUTURISTIC PORTFOLIO — Design System
   ============================================= */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Palette */
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1629;
  --bg-card: rgba(15, 22, 41, 0.6);
  --bg-glass: rgba(15, 22, 41, 0.35);

  --cyan-primary: #00f0ff;
  --cyan-dim: #00b8c5;
  --cyan-glow: rgba(0, 240, 255, 0.35);
  --magenta-primary: #ff00e5;
  --magenta-glow: rgba(255, 0, 229, 0.3);
  --purple-primary: #a855f7;
  --purple-glow: rgba(168, 85, 247, 0.3);
  --blue-accent: #3b82f6;
  --green-accent: #22d3ee;
  --gold-accent: #f59e0b;

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-heading: #f1f5f9;

  --border-glass: rgba(0, 240, 255, 0.12);
  --border-hover: rgba(0, 240, 255, 0.4);

  /* Fonts */
  --font-heading: 'Orbitron', sans-serif;
  --font-sub: 'Rajdhani', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-max: 1200px;

  /* Transitions */
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* Animated background grid */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  pointer-events: none;
  animation: gridPulse 8s ease-in-out infinite alternate;
}

@keyframes gridPulse {
  0% { opacity: 0.4; }
  100% { opacity: 1; }
}

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

/* ---------- Utility ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-primary), var(--magenta-primary));
  border-radius: 3px;
  box-shadow: 0 0 12px var(--cyan-glow);
}

.section-subtitle {
  font-family: var(--font-sub);
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 50px;
  letter-spacing: 1px;
}

section {
  padding: var(--section-padding);
  position: relative;
  z-index: 1;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Floating Particles ---------- */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* =============================================
   NAVIGATION
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition-fast);
  backdrop-filter: blur(0px);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-glass);
  padding: 10px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--cyan-primary);
  text-decoration: none;
  letter-spacing: 3px;
  text-shadow: 0 0 20px var(--cyan-glow);
  transition: var(--transition-fast);
}

.nav-logo:hover {
  text-shadow: 0 0 30px var(--cyan-glow), 0 0 60px var(--cyan-glow);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 8px;
}

.nav-links a {
  font-family: var(--font-sub);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 8px 18px;
  border-radius: 6px;
  position: relative;
  transition: var(--transition-fast);
}

.nav-links a::before {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--cyan-primary);
  transform: translateX(-50%);
  transition: width 0.3s ease;
  box-shadow: 0 0 8px var(--cyan-glow);
}

.nav-links a:hover {
  color: var(--cyan-primary);
}

.nav-links a:hover::before {
  width: 60%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--cyan-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  filter: saturate(1.5) hue-rotate(-10deg);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(10, 14, 26, 0.4) 0%,
    rgba(10, 14, 26, 0.7) 50%,
    var(--bg-primary) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
}

.hero-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--cyan-primary);
  box-shadow:
    0 0 30px var(--cyan-glow),
    0 0 60px rgba(0, 240, 255, 0.15),
    inset 0 0 20px rgba(0, 240, 255, 0.1);
  margin-bottom: 30px;
  animation: avatarFloat 6s ease-in-out infinite;
}

@keyframes avatarFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-greeting {
  font-family: var(--font-sub);
  font-size: 1.1rem;
  color: var(--cyan-primary);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 10px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.3s forwards;
}

.hero-name {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.8rem);
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.15;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.5s forwards;
}

.hero-name .highlight {
  background: linear-gradient(135deg, var(--cyan-primary), var(--magenta-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-family: var(--font-sub);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 36px;
  line-height: 1.6;
  opacity: 0;
  animation: fadeInUp 0.8s 0.7s forwards;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s 0.9s forwards;
}

/* Buttons */
.btn-primary {
  font-family: var(--font-sub);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 36px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--cyan-primary), var(--cyan-dim));
  color: var(--bg-primary);
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: var(--transition-fast);
  box-shadow: 0 0 20px var(--cyan-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px var(--cyan-glow), 0 8px 30px rgba(0, 0, 0, 0.3);
}

.btn-outline {
  font-family: var(--font-sub);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 36px;
  border: 1.5px solid var(--cyan-primary);
  border-radius: 8px;
  background: transparent;
  color: var(--cyan-primary);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
}

.btn-outline:hover {
  background: rgba(0, 240, 255, 0.08);
  transform: translateY(-3px);
  box-shadow: 0 0 20px var(--cyan-glow);
}

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

/* Hero scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: scrollBounce 2s infinite;
}

.scroll-indicator span {
  font-family: var(--font-sub);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.scroll-indicator .arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--cyan-primary);
  border-bottom: 2px solid var(--cyan-primary);
  transform: rotate(45deg);
  box-shadow: 4px 4px 8px var(--cyan-glow);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* =============================================
   ABOUT SECTION
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 30px;
}

.stat-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 25px var(--cyan-glow);
  transform: translateY(-5px);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan-primary), var(--magenta-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-family: var(--font-sub);
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 4px;
}

.about-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-orb {
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%,
    rgba(0, 240, 255, 0.15),
    rgba(168, 85, 247, 0.08),
    transparent 70%);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: orbPulse 5s ease-in-out infinite alternate;
}

.about-orb::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 240, 255, 0.15);
  animation: orbSpin 20s linear infinite;
}

.about-orb::after {
  content: '';
  position: absolute;
  inset: -45px;
  border-radius: 50%;
  border: 1px dashed rgba(168, 85, 247, 0.1);
  animation: orbSpin 30s linear infinite reverse;
}

@keyframes orbPulse {
  0% { box-shadow: 0 0 40px var(--cyan-glow); }
  100% { box-shadow: 0 0 80px var(--purple-glow); }
}

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

.orb-content {
  text-align: center;
  z-index: 1;
}

.orb-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.orb-text {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--cyan-primary);
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* =============================================
   SKILLS SECTION
   ============================================= */
#skills {
  background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary), var(--bg-primary));
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.skill-card {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 36px 28px;
  transition: var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--cyan-primary), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.skill-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 10px 40px rgba(0, 240, 255, 0.1);
}

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

.skill-icon {
  font-size: 2.4rem;
  margin-bottom: 18px;
  display: block;
}

.skill-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 14px;
}

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

.skill-tag {
  font-family: var(--font-sub);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 1px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border-glass);
  background: rgba(0, 240, 255, 0.04);
  color: var(--cyan-primary);
  transition: var(--transition-fast);
}

.skill-tag:hover {
  background: rgba(0, 240, 255, 0.12);
  border-color: var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-glow);
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
  margin-top: 50px;
}

.cert-card {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 30px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: var(--transition-fast);
}

.cert-card:hover {
  border-color: var(--gold-accent);
  box-shadow: 0 0 25px rgba(245, 158, 11, 0.15);
  transform: translateY(-4px);
}

.cert-badge {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.cert-badge.mikrotik {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(0, 240, 255, 0.05));
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.cert-badge.huawei {
  background: linear-gradient(135deg, rgba(255, 0, 229, 0.15), rgba(255, 0, 229, 0.05));
  border: 1px solid rgba(255, 0, 229, 0.2);
}

.cert-badge.toeic {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.05));
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.cert-info h4 {
  font-family: var(--font-sub);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.cert-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* =============================================
   EXPERIENCE / TIMELINE
   ============================================= */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan-primary), var(--magenta-primary), var(--purple-primary));
  box-shadow: 0 0 10px var(--cyan-glow);
}

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 50px;
}

.timeline-dot {
  position: absolute;
  left: 21px;
  top: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--cyan-primary);
  box-shadow: 0 0 15px var(--cyan-glow);
  z-index: 1;
}

.timeline-dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--cyan-primary);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.timeline-card {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 30px;
  transition: var(--transition-fast);
}

.timeline-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 30px var(--cyan-glow);
  transform: translateX(6px);
}

.timeline-date {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.timeline-role {
  font-family: var(--font-sub);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.timeline-company {
  font-family: var(--font-sub);
  font-size: 0.95rem;
  color: var(--magenta-primary);
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* =============================================
   EDUCATION SECTION
   ============================================= */
#education {
  background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.education-card {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 44px;
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  transition: var(--transition-fast);
}

.education-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 40px var(--cyan-glow);
}

.education-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.03) 0%, transparent 50%);
  animation: educGlow 6s ease-in-out infinite alternate;
}

@keyframes educGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-5%, 5%); }
}

.education-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.education-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.12), rgba(168, 85, 247, 0.08));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.education-title h3 {
  font-family: var(--font-sub);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-heading);
}

.education-title p {
  font-size: 0.9rem;
  color: var(--cyan-primary);
  letter-spacing: 0.5px;
}

.education-details {
  position: relative;
  z-index: 1;
}

.education-details li {
  list-style: none;
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
}

.education-details li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--cyan-primary);
  font-size: 1rem;
}

.gpa-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(168, 85, 247, 0.08));
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 30px;
  padding: 10px 22px;
  margin-top: 16px;
  position: relative;
  z-index: 1;
}

.gpa-badge .gpa-label {
  font-family: var(--font-sub);
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.gpa-badge .gpa-value {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan-primary), var(--magenta-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* =============================================
   CONTACT SECTION
   ============================================= */
#contact {
  background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-card {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
  display: block;
}

.contact-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 10px 40px var(--cyan-glow);
}

.contact-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
  display: block;
}

.contact-card h3 {
  font-family: var(--font-sub);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  word-break: break-all;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-glass);
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-text {
  font-family: var(--font-sub);
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.footer-text .highlight {
  color: var(--cyan-primary);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1.2rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--cyan-primary);
  text-shadow: 0 0 12px var(--cyan-glow);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-glass);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-name {
    font-size: clamp(1.6rem, 7vw, 2.4rem);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-visual {
    order: -1;
  }

  .about-orb {
    width: 240px;
    height: 240px;
  }

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

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

  .timeline::before {
    left: 16px;
  }

  .timeline-item {
    padding-left: 50px;
  }

  .timeline-dot {
    left: 8px;
  }

  .education-card {
    padding: 28px 20px;
  }

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

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

  section {
    padding: 70px 0;
  }
}

@media (max-width: 480px) {
  .about-stats {
    grid-template-columns: 1fr;
  }

  .hero-avatar {
    width: 120px;
    height: 120px;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary,
  .btn-outline {
    width: 100%;
    text-align: center;
  }
}