/* ============================================================
   NGUYENNGOCCHAU.TECH — Main Stylesheet
   Modern Dark Theme with Vibrant Accents
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg-primary:   #050c1a;
  --bg-secondary: #091525;
  --bg-card:      #0d1e35;
  --bg-card-hover:#112440;

  --accent-blue:  #3b82f6;
  --accent-teal:  #14b8a6;
  --accent-purple:#8b5cf6;
  --accent-amber: #f59e0b;
  --accent-pink:  #ec4899;
  --accent-green: #10b981;

  --grad-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --grad-hero:    linear-gradient(135deg, #050c1a 0%, #091525 50%, #0d1e35 100%);
  --grad-glow:    radial-gradient(ellipse at center, rgba(59,130,246,.18) 0%, transparent 70%);

  --text-primary:   #f0f6ff;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;

  --border:       rgba(59,130,246,.15);
  --border-hover: rgba(59,130,246,.4);

  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;

  --shadow-card: 0 4px 24px rgba(0,0,0,.4);
  --shadow-glow: 0 0 40px rgba(59,130,246,.2);

  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --transition-slow: all .6s cubic-bezier(.4,0,.2,1);
}

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

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

body {
  font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ---------- Utilities ---------- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.highlight {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(5,12,26,.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  transition: var(--transition);
}
.nav-logo:hover { transform: scale(1.05); }
.logo-bracket { color: var(--accent-blue); }
.nav-links {
  display: flex;
  gap: 36px;
}
.nav-link {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--grad-primary);
  border-radius: 2px;
  transition: width .3s ease;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

/* CV Button in Navbar */
.btn-cv-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--grad-primary);
  color: #fff !important;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(59,130,246,0.3);
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: none;
  cursor: pointer;
}
.btn-cv-nav:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(59,130,246,0.5);
}

.header-contact-info {
  border-left: 1px solid var(--border);
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.4;
}
.header-contact-info .h-phone {
  font-size: 0.85rem;
  color: var(--accent-blue);
  font-weight: 700;
  letter-spacing: 0.5px;
}
.header-contact-info .h-email {
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.header-cv-btn {
  display: flex;
  align-items: center;
  padding-left: 10px;
}

@media (max-width: 768px) {
  .header-contact-info {
    border-left: none;
    padding-left: 0;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 20px;
    margin-top: 10px;
  }
  .header-cv-btn {
    padding-left: 0;
    justify-content: center;
    padding-bottom: 10px;
  }
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--grad-hero);
  padding: 100px 24px 60px;
}

/* Background Effects */
.hero-bg { position: absolute; inset: 0; pointer-events: none; }

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .5;
  animation: float 6s ease-in-out infinite;
}
.glow-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,130,246,.3) 0%, transparent 70%);
  top: -100px; left: -100px;
  animation-delay: 0s;
}
.glow-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(139,92,246,.25) 0%, transparent 70%);
  top: 30%; right: -80px;
  animation-delay: 2s;
}
.glow-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(20,184,166,.2) 0%, transparent 70%);
  bottom: -50px; left: 30%;
  animation-delay: 4s;
}

@keyframes float {
  0%,100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(20px,-20px) scale(1.05); }
  66%      { transform: translate(-10px,10px) scale(.98); }
}

/* Particles */
.hero-particles { position: absolute; inset: 0; }
.particle {
  position: absolute;
  background: var(--accent-blue);
  border-radius: 50%;
  animation: particleFloat linear infinite;
  opacity: 0;
}

@keyframes particleFloat {
  0%   { transform: translateY(0) rotate(0deg); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(-800px) rotate(720deg); opacity: 0; }
}

/* Hero Layout */
.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 64px;
  max-width: 1100px;
  width: 100%;
}

/* Avatar */
.hero-avatar-wrap {
  position: relative;
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-40px);
  animation: slideInLeft .8s cubic-bezier(.4,0,.2,1) .3s forwards;
}

@keyframes slideInLeft {
  to { opacity: 1; transform: translateX(0); }
}

.avatar-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid transparent;
}
.ring-outer {
  inset: -12px;
  border-color: rgba(59,130,246,.4);
  animation: spin 12s linear infinite;
  border-top-color: var(--accent-blue);
  border-right-color: var(--accent-purple);
}
.ring-inner {
  inset: -6px;
  border-color: rgba(139,92,246,.3);
  animation: spin 8s linear infinite reverse;
  border-bottom-color: var(--accent-teal);
}
@keyframes spin { to { transform: rotate(360deg); } }

.hero-avatar {
  width: 280px; height: 280px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 4px solid rgba(59,130,246,.3);
  box-shadow:
    0 0 0 1px rgba(59,130,246,.1),
    0 20px 60px rgba(0,0,0,.6),
    0 0 80px rgba(59,130,246,.15);
  transition: var(--transition);
}
.hero-avatar:hover {
  transform: scale(1.03);
  box-shadow:
    0 0 0 1px rgba(59,130,246,.3),
    0 20px 60px rgba(0,0,0,.7),
    0 0 100px rgba(59,130,246,.3);
}

.avatar-badge {
  position: absolute;
  bottom: 12px; left: 50%;
  transform: translateX(-50%);
  background: rgba(5,12,26,.9);
  border: 1px solid rgba(16,185,129,.4);
  border-radius: 20px;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  font-weight: 600;
  color: #10b981;
  white-space: nowrap;
  backdrop-filter: blur(10px);
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .6; transform: scale(1.3); }
}

/* Hero Text */
.hero-text {
  flex: 1;
  opacity: 0;
  transform: translateX(40px);
  animation: slideInRight .8s cubic-bezier(.4,0,.2,1) .5s forwards;
}
@keyframes slideInRight {
  to { opacity: 1; transform: translateX(0); }
}

.hero-greeting {
  font-size: .95rem;
  color: var(--accent-blue);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.hero-name {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #f0f6ff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.hero-title-icon { font-size: 1.3rem; }
.hero-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent-teal);
}
.typed-cursor {
  font-size: 1.3rem;
  color: var(--accent-teal);
  animation: blink .8s ease-in-out infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.hero-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 32px;
  line-height: 1.8;
}

/* Buttons */
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}
.btn-outline:hover {
  background: rgba(59,130,246,.1);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 24px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  max-width: fit-content;
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  display: block;
  font-size: .73rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
}
.stat-divider {
  width: 1px; height: 40px;
  background: var(--border);
}

/* Scroll indicator */
.scroll-down {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bobDown 2s ease-in-out infinite;
}
@keyframes bobDown {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}
.scroll-mouse {
  width: 26px; height: 40px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 13px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.scroll-wheel {
  width: 4px; height: 8px;
  background: var(--accent-blue);
  border-radius: 2px;
  animation: scrollWheel 1.5s ease-in-out infinite;
}
@keyframes scrollWheel {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

/* ============================================================
   SECTIONS — Common
   ============================================================ */
.section { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent-blue);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.2;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-section { background: var(--bg-secondary); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 64px;
  align-items: center;
}

.about-img-frame {
  position: relative;
  display: inline-block;
}
.about-img {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  object-position: top;
  aspect-ratio: 3/4;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  transition: var(--transition);
}
.about-img:hover { transform: scale(1.02); }

.img-decoration {
  position: absolute;
  border-radius: var(--radius-md);
  pointer-events: none;
}
.deco-1 {
  width: 80px; height: 80px;
  border: 3px solid var(--accent-blue);
  top: -16px; left: -16px;
  border-radius: var(--radius-sm);
  opacity: .6;
  animation: float 4s ease-in-out infinite;
}
.deco-2 {
  width: 50px; height: 50px;
  background: var(--grad-primary);
  bottom: -12px; right: -12px;
  border-radius: 12px;
  opacity: .5;
  animation: float 4s ease-in-out infinite reverse;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition);
}
.about-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.about-name {
  font-size: 1.7rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.about-role {
  font-size: .9rem;
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.about-bio {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  background: rgba(255,255,255,.03);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.info-item:hover {
  border-color: var(--border-hover);
  background: rgba(59,130,246,.05);
}
.info-icon { font-size: 1.2rem; flex-shrink: 0; }
.info-label {
  display: block;
  font-size: .72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 2px;
}
.info-value {
  display: block;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills-section { background: var(--bg-primary); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}
.skill-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .6s ease, transform .6s ease, background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c, #3b82f6), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}
.skill-card:hover::before { opacity: 1; }
.skill-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.skill-icon-wrap {
  width: 60px; height: 60px;
  background: rgba(var(--c, 59,130,246), .12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,.06);
}
.skill-card:hover .skill-icon-wrap { transform: scale(1.1) rotate(-3deg); }
.skill-icon-wrap svg { width: 32px; height: 32px; }

.skill-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.skill-desc {
  font-size: .88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: .72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(59,130,246,.12);
  border: 1px solid rgba(59,130,246,.25);
  color: var(--accent-blue);
}

/* ============================================================
   EXPERIENCE / TIMELINE
   ============================================================ */
.exp-section { background: var(--bg-secondary); }

.timeline { position: relative; max-width: 820px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute;
  top: 0; left: 28px; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple), transparent);
  border-radius: 2px;
}

.timeline-item {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  flex-shrink: 0;
  width: 58px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 24px;
}
.dot-inner {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--grad-primary);
  box-shadow: 0 0 12px rgba(59,130,246,.5);
  animation: pulse-dot 3s ease-in-out infinite;
}

.timeline-content {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  transition: var(--transition);
}
.timeline-content:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.tl-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.tl-role {
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tl-period {
  font-size: .78rem;
  font-weight: 600;
  color: var(--accent-amber);
  background: rgba(245,158,11,.1);
  border: 1px solid rgba(245,158,11,.25);
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
}
.tl-desc {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: .93rem;
}
.tl-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tl-list li {
  font-size: .9rem;
  color: var(--text-secondary);
  padding: 8px 14px;
  background: rgba(255,255,255,.025);
  border-radius: var(--radius-sm);
  border-left: 2px solid rgba(59,130,246,.3);
  transition: var(--transition);
}
.tl-list li:hover {
  background: rgba(59,130,246,.07);
  border-left-color: var(--accent-blue);
  color: var(--text-primary);
  transform: translateX(4px);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-section { background: var(--bg-primary); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-intro {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  font-size: 1.02rem;
}

.contact-items { 
  display: grid; 
  grid-template-columns: repeat(2, 1fr); 
  gap: 16px; 
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.contact-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}
.ci-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(59,130,246,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.ci-info { flex: 1; }
.ci-label {
  display: block;
  font-size: .72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.ci-value {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Contact Card */
.contact-card {
  position: sticky;
  top: 100px;
}
.contact-card-inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.contact-card-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-primary);
}
.contact-card-inner:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.contact-avatar-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
}
.contact-avatar {
  width: 100px; height: 100px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 3px solid rgba(59,130,246,.4);
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.contact-status-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--accent-green);
  border-right-color: var(--accent-blue);
  animation: spin 4s linear infinite;
}

.contact-name {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.contact-tagline {
  font-size: .85rem;
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 24px;
}

.contact-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 28px;
}
.cbadge {
  font-size: .75rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  background: rgba(59,130,246,.12);
  border: 1px solid rgba(59,130,246,.25);
  color: var(--accent-blue);
}

.cta-text {
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}
.contact-cta { position: relative; }

/* Pulse animation */
.cta-pulse { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 60px; height: 60px; }
.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--accent-green);
  animation: pulsate 2s ease-out infinite;
}
.pulse-ring.delay-1 { animation-delay: .6s; }
.pulse-ring.delay-2 { animation-delay: 1.2s; }
@keyframes pulsate {
  0%   { transform: scale(.8); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}
.pulse-core {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--grad-primary);
  color: #fff;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(59,130,246,.4);
  position: relative;
  z-index: 1;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-content { text-align: center; }
.footer-logo {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
}
.footer-text {
  color: var(--text-secondary);
  font-size: .9rem;
  margin-bottom: 4px;
}
.footer-sub {
  color: var(--text-muted);
  font-size: .8rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid  { grid-template-columns: 1fr; gap: 40px; }
  .about-image-col { display: flex; justify-content: center; }
  .about-img { max-width: 320px; aspect-ratio: 1; border-radius: 50%; }
  .deco-1, .deco-2 { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-card { position: static; }
}

@media (max-width: 768px) {
  .hero-content { flex-direction: column; text-align: center; gap: 40px; }
  .hero-avatar { width: 200px; height: 200px; }
  .ring-outer { inset: -10px; }
  .ring-inner { inset: -5px; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-stats { margin: 0 auto; }

  .nav-links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(5,12,26,.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }

  .skills-grid { grid-template-columns: 1fr; }
  .info-grid   { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .timeline-dot { width: 42px; }
  .section { padding: 72px 0; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2rem; }
  .hero-stats { flex-direction: column; align-items: stretch; }
  .stat-divider { width: 100%; height: 1px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .timeline-content { padding: 20px; }
  .contact-items { grid-template-columns: 1fr; }
}

/* ============================================================
   AOS (Scroll Animation)
   ============================================================ */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
[data-aos="fade-right"] { transform: translateX(-30px); }
[data-aos="fade-left"]  { transform: translateX(30px); }
[data-aos="zoom-in"]    { transform: scale(.9); }
[data-aos].in-view {
  opacity: 1;
  transform: none;
}