@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-primary: #060b18;
  --bg-secondary: #0c1225;
  --bg-card: rgba(15, 23, 50, 0.6);
  --bg-glass: rgba(15, 25, 55, 0.45);
  --border-glass: rgba(100, 160, 255, 0.1);
  --accent-cyan: #00d4ff;
  --accent-purple: #a855f7;
  --accent-blue: #3b82f6;
  --accent-pink: #ec4899;
  --accent-green: #22c55e;
  --gradient-main: linear-gradient(135deg, #00d4ff, #a855f7);
  --gradient-card: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(168,85,247,0.08));
  --text-primary: #e8edf5;
  --text-secondary: #8892a8;
  --text-muted: #5a6478;
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-glow: 0 0 30px rgba(0,212,255,0.15);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  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; }

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 16px 0;
  background: rgba(6, 11, 24, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition);
}
.navbar.scrolled { padding: 10px 0; box-shadow: 0 4px 30px rgba(0,0,0,0.4); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-decoration: none; }
.nav-logo span { font-weight: 400; opacity: 0.7; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: var(--transition); position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--gradient-main); transition: var(--transition); border-radius: 1px; }
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text-primary); transition: var(--transition); border-radius: 1px; }
.nav-cta { padding: 8px 20px; background: var(--gradient-main); color: var(--bg-primary); font-weight: 600; font-size: 0.85rem; border-radius: var(--radius-sm); text-decoration: none; transition: var(--transition); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 4px 20px rgba(0,212,255,0.3); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden;
  padding: 120px 24px 80px;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
#particles-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-glow {
  position: absolute; width: 600px; height: 600px; border-radius: 50%;
  filter: blur(120px); opacity: 0.15; z-index: 0;
}
.hero-glow-1 { background: var(--accent-cyan); top: -200px; right: -100px; }
.hero-glow-2 { background: var(--accent-purple); bottom: -200px; left: -100px; }
.hero-content { max-width: 1200px; margin: 0 auto; width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-text { display: flex; flex-direction: column; gap: 24px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px;
  background: var(--bg-glass); border: 1px solid var(--border-glass); border-radius: 100px;
  font-size: 0.8rem; color: var(--accent-cyan); width: fit-content;
  backdrop-filter: blur(10px);
}
.hero-badge .dot { width: 6px; height: 6px; background: var(--accent-green); border-radius: 50%; animation: pulse 2s infinite; }
.hero-name { font-family: var(--font-heading); font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; line-height: 1.1; }
.hero-name .gradient { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-title-wrapper { height: 36px; overflow: hidden; }
.hero-title { font-size: 1.2rem; color: var(--text-secondary); font-weight: 400; }
.hero-title .typed-text { color: var(--accent-cyan); font-family: var(--font-mono); }
.hero-title .cursor { display: inline-block; width: 2px; height: 1.2em; background: var(--accent-cyan); margin-left: 2px; animation: blink 1s infinite; vertical-align: text-bottom; }
.hero-desc { font-size: 1rem; color: var(--text-secondary); max-width: 520px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  padding: 14px 32px; background: var(--gradient-main); color: var(--bg-primary);
  font-weight: 600; font-size: 0.95rem; border: none; border-radius: var(--radius-sm);
  cursor: pointer; text-decoration: none; transition: var(--transition);
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-glow); }
.btn-secondary {
  padding: 14px 32px; background: transparent; color: var(--text-primary);
  font-weight: 600; font-size: 0.95rem; border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); cursor: pointer; text-decoration: none;
  transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
  backdrop-filter: blur(10px);
}
.btn-secondary:hover { border-color: var(--accent-cyan); background: rgba(0,212,255,0.05); transform: translateY(-3px); }
.hero-stats { display: flex; gap: 32px; margin-top: 16px; }
.hero-stat { text-align: center; }
.hero-stat .number { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-stat .label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-avatar-wrapper {
  width: 340px; height: 340px; border-radius: 50%; position: relative;
  display: flex; align-items: center; justify-content: center;
}
.hero-avatar-ring {
  position: absolute; inset: -4px; border-radius: 50%;
  background: var(--gradient-main); padding: 3px;
  animation: spin 8s linear infinite;
}
.hero-avatar-ring::before {
  content: ''; display: block; width: 100%; height: 100%; border-radius: 50%;
  background: var(--bg-primary);
}
.hero-avatar {
  width: 320px; height: 320px; border-radius: 50%; object-fit: cover; position: relative; z-index: 1;
  border: 3px solid var(--bg-primary);
}
.hero-avatar-placeholder {
  width: 320px; height: 320px; border-radius: 50%; position: relative; z-index: 1;
  background: var(--gradient-card); border: 3px solid var(--bg-primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-size: 6rem; font-weight: 800;
  background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.floating-badge {
  position: absolute; padding: 8px 16px; border-radius: var(--radius-sm);
  background: var(--bg-glass); backdrop-filter: blur(15px);
  border: 1px solid var(--border-glass); font-size: 0.8rem;
  color: var(--text-primary); z-index: 2; white-space: nowrap;
  animation: float 3s ease-in-out infinite;
}
.floating-badge:nth-child(3) { top: 10%; right: -20px; animation-delay: 0s; }
.floating-badge:nth-child(4) { bottom: 15%; left: -30px; animation-delay: 1s; }
.floating-badge:nth-child(5) { top: 50%; right: -40px; animation-delay: 2s; }
.floating-badge .icon { margin-right: 6px; }

/* ===== SECTIONS COMMON ===== */
section { padding: 100px 24px; position: relative; }
.section-container { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px;
  background: var(--bg-glass); border: 1px solid var(--border-glass); border-radius: 100px;
  font-size: 0.8rem; color: var(--accent-cyan); margin-bottom: 16px;
  font-family: var(--font-mono); backdrop-filter: blur(10px);
}
.section-title {
  font-family: var(--font-heading); font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700; margin-bottom: 16px;
}
.section-title .gradient { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-subtitle { color: var(--text-secondary); max-width: 600px; margin: 0 auto; font-size: 1rem; }

/* ===== ABOUT ===== */
.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; }
.about-quote {
  padding: 20px 24px; border-left: 3px solid var(--accent-cyan);
  background: var(--bg-glass); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic; color: var(--accent-cyan); font-size: 0.95rem; margin: 24px 0;
}
.about-stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.stat-card {
  padding: 28px; background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-md); backdrop-filter: blur(15px); text-align: center;
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-5px); border-color: rgba(0,212,255,0.3); box-shadow: var(--shadow-glow); }
.stat-card .value { font-family: var(--font-heading); font-size: 2.2rem; font-weight: 700; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-card .desc { font-size: 0.8rem; color: var(--text-secondary); margin-top: 4px; }

/* ===== EXPERIENCE ===== */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 24px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple)); }
.timeline-item { padding-left: 72px; margin-bottom: 48px; position: relative; }
.timeline-dot {
  position: absolute; left: 15px; top: 8px; width: 20px; height: 20px;
  border-radius: 50%; border: 3px solid var(--accent-cyan);
  background: var(--bg-primary); z-index: 1;
}
.timeline-item:nth-child(even) .timeline-dot { border-color: var(--accent-purple); }
.timeline-card {
  padding: 28px; background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-md); backdrop-filter: blur(15px); transition: var(--transition);
}
.timeline-card:hover { border-color: rgba(0,212,255,0.25); transform: translateX(5px); }
.timeline-date { font-size: 0.8rem; color: var(--accent-cyan); font-family: var(--font-mono); margin-bottom: 8px; }
.timeline-role { font-family: var(--font-heading); font-size: 1.2rem; font-weight: 600; margin-bottom: 4px; }
.timeline-company { color: var(--accent-purple); font-size: 0.9rem; margin-bottom: 12px; }
.timeline-desc { color: var(--text-secondary); font-size: 0.9rem; }
.timeline-desc li { margin-bottom: 6px; list-style: none; padding-left: 16px; position: relative; }
.timeline-desc li::before { content: '▹'; position: absolute; left: 0; color: var(--accent-cyan); }

/* ===== PROJECTS ===== */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 28px; }
.project-card {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); backdrop-filter: blur(15px);
  overflow: hidden; transition: var(--transition); position: relative;
}
.project-card:hover { transform: translateY(-8px); border-color: rgba(0,212,255,0.3); box-shadow: var(--shadow-glow); }
.project-card-header {
  padding: 28px 28px 0; display: flex; justify-content: space-between; align-items: flex-start;
}
.project-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: var(--gradient-card); display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; border: 1px solid var(--border-glass);
}
.project-links { display: flex; gap: 12px; }
.project-links a {
  color: var(--text-muted); font-size: 1.1rem; transition: var(--transition); text-decoration: none;
}
.project-links a:hover { color: var(--accent-cyan); }
.project-card-body { padding: 20px 28px 28px; }
.project-card-body h3 { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 600; margin-bottom: 10px; }
.project-card-body p { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 16px; line-height: 1.7; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project-tags span {
  padding: 4px 12px; background: rgba(0,212,255,0.08); color: var(--accent-cyan);
  border-radius: 100px; font-size: 0.75rem; font-family: var(--font-mono);
}

/* ===== SKILLS ===== */
.skills-wrapper { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; }
.skill-category {
  padding: 28px; background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-md); backdrop-filter: blur(15px); transition: var(--transition);
}
.skill-category:hover { border-color: rgba(0,212,255,0.25); }
.skill-category h3 {
  font-family: var(--font-heading); font-size: 1rem; font-weight: 600; margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.skill-category h3 .cat-icon { font-size: 1.3rem; }
.skill-bar-group { display: flex; flex-direction: column; gap: 16px; }
.skill-item label { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 6px; }
.skill-bar { width: 100%; height: 6px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; }
.skill-fill { height: 100%; background: var(--gradient-main); border-radius: 3px; width: 0; transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1); }
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.skill-tag {
  padding: 6px 14px; background: rgba(0,212,255,0.06); border: 1px solid var(--border-glass);
  border-radius: 100px; font-size: 0.8rem; color: var(--text-secondary); transition: var(--transition);
}
.skill-tag:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); background: rgba(0,212,255,0.1); }

/* ===== CERTIFICATIONS ===== */
.certs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.cert-card {
  padding: 28px; background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-md); backdrop-filter: blur(15px); transition: var(--transition);
  display: flex; gap: 20px; align-items: flex-start;
}
.cert-card:hover { transform: translateY(-5px); border-color: rgba(168,85,247,0.3); box-shadow: 0 0 30px rgba(168,85,247,0.1); }
.cert-icon {
  width: 52px; height: 52px; min-width: 52px; border-radius: var(--radius-sm);
  background: var(--gradient-card); display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; border: 1px solid var(--border-glass);
}
.cert-info h3 { font-family: var(--font-heading); font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.cert-info .cert-issuer { color: var(--accent-purple); font-size: 0.85rem; margin-bottom: 6px; }
.cert-info .cert-date { color: var(--text-muted); font-size: 0.8rem; font-family: var(--font-mono); }
a.cert-card { text-decoration: none; color: inherit; cursor: pointer; }
.cert-view {
  font-size: 0.78rem; color: var(--accent-cyan); font-family: var(--font-mono);
  margin-top: 8px; opacity: 0; transition: var(--transition);
}
a.cert-card:hover .cert-view, .pub-card:hover .cert-view { opacity: 1; }

/* ===== PUBLICATIONS ===== */
.pub-card {
  max-width: 700px; margin: 0 auto; padding: 36px; background: var(--bg-glass);
  border: 1px solid var(--border-glass); border-radius: var(--radius-lg);
  backdrop-filter: blur(15px); text-align: center;
}
.pub-card h3 { font-family: var(--font-heading); font-size: 1.2rem; margin-bottom: 12px; }
.pub-card p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 8px; }
.pub-card .pub-venue { color: var(--accent-cyan); font-family: var(--font-mono); font-size: 0.85rem; }

/* ===== CONTACT ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-info h3 { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; }
.contact-info p { color: var(--text-secondary); }
.contact-links { display: flex; flex-direction: column; gap: 16px; margin-top: 8px; }
.contact-link {
  display: flex; align-items: center; gap: 14px; padding: 16px 20px;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); text-decoration: none; color: var(--text-primary);
  transition: var(--transition); backdrop-filter: blur(10px);
}
.contact-link:hover { border-color: var(--accent-cyan); transform: translateX(5px); }
.contact-link .link-icon { font-size: 1.3rem; min-width: 24px; text-align: center; }
.contact-link .link-text { font-size: 0.9rem; }
.contact-link .link-label { font-size: 0.75rem; color: var(--text-muted); }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; color: var(--text-secondary); }
.form-group input, .form-group textarea {
  padding: 14px 18px; background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font-body);
  font-size: 0.95rem; outline: none; transition: var(--transition); backdrop-filter: blur(10px);
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(0,212,255,0.1); }
.form-group textarea { resize: vertical; min-height: 130px; }

/* ===== FOOTER ===== */
.footer {
  padding: 40px 24px; border-top: 1px solid var(--border-glass);
  text-align: center; color: var(--text-muted); font-size: 0.85rem;
}
.footer-socials { display: flex; justify-content: center; gap: 20px; margin-bottom: 16px; }
.footer-socials a {
  width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--bg-glass); border: 1px solid var(--border-glass); color: var(--text-secondary);
  text-decoration: none; font-size: 1.1rem; transition: var(--transition);
}
.footer-socials a:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); transform: translateY(-3px); }

/* ===== ANIMATIONS ===== */
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-text { align-items: center; }
  .hero-desc { margin: 0 auto; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-avatar-wrapper { width: 240px; height: 240px; }
  .hero-avatar, .hero-avatar-placeholder { width: 220px; height: 220px; font-size: 4rem; }
  .floating-badge { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: rgba(6,11,24,0.95); padding: 20px; gap: 16px; border-bottom: 1px solid var(--border-glass); backdrop-filter: blur(20px); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  section { padding: 64px 16px; }
  .skills-wrapper { grid-template-columns: 1fr; }
}