:root {
  /* Apple-inspired Light Workspace */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 1);
  
  /* Stark contrast text */
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #a1a1a6;
  
  /* Electric Neon Accents */
  --accent: #2997ff;
  --accent-hover: #0077ed;
  --neon-cyan: #00ffff;
  --neon-purple: #bf5af2;
  --neon-pink: #ff375f;
  --accent-gradient: linear-gradient(135deg, var(--accent), var(--neon-purple), var(--neon-pink));
  
  /* Premium Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(0, 0, 0, 0.05);
  --glass-blur: blur(20px);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.04);
  
  /* Core */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Inter', -apple-system, sans-serif;
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

html { scroll-behavior: smooth; }
::selection { background-color: var(--accent); color: #fff; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: #d2d2d7; border-radius: 4px; }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-bottom: 3rem; text-align: center; }

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Background Animations */
.background-animations {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  overflow: hidden; z-index: 0; pointer-events: none;
}
.glow-orb {
  position: absolute; border-radius: 50%; filter: blur(90px);
  opacity: 0.3; animation: float 25s infinite ease-in-out alternate;
}
.orb-1 { width: 50vw; height: 50vw; background: var(--neon-cyan); top: -10%; left: -10%; }
.orb-2 { width: 60vw; height: 60vw; background: var(--neon-purple); bottom: -20%; right: -10%; animation-delay: -5s; }
.orb-3 { width: 40vw; height: 40vw; background: var(--neon-pink); top: 30%; left: 40%; animation-delay: -10s; }
@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(10vw, 5vw) scale(1.1); }
  100% { transform: translate(-5vw, 10vw) scale(0.9); }
}

/* Spline Container */
.spline-container {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; pointer-events: auto;
  overflow: hidden;
}
.spline-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  /* Physically cuts a 180x70px rectangle out of the bottom right corner where the logo is */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 70px), calc(100% - 180px) calc(100% - 70px), calc(100% - 180px) 100%, 0 100%);
}

/* Loading Screen */
#loading-screen {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: var(--bg-primary); z-index: 9999;
  display: flex; justify-content: center; align-items: center;
  transition: opacity 0.5s ease;
}
.loader {
  width: 40px; height: 40px;
  border: 3px solid #e5e5ea; border-bottom-color: var(--accent);
  border-radius: 50%; animation: rotation 1s linear infinite;
}
@keyframes rotation { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* Navigation */
nav {
  position: fixed; top: 0; width: 100%; padding: 1.5rem 5%;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 1000; transition: var(--transition-smooth);
}
nav.scrolled {
  background: var(--glass-bg); backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border); padding: 1rem 5%;
}
.logo { font-weight: 900; font-size: 1.2rem; text-decoration: none; color: var(--text-primary); letter-spacing: 1.5px; }
.nav-links { display: flex; gap: 2.5rem; }
.nav-links a {
  color: var(--text-secondary); text-decoration: none; font-size: 0.95rem;
  font-weight: 500; transition: color 0.3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.admin-btn {
  padding: 0.6rem 1.2rem; background: var(--text-primary);
  border-radius: 40px; text-decoration: none; color: #fff;
  font-size: 0.85rem; font-weight: 600; transition: var(--transition-smooth);
}
.admin-btn:hover { background: var(--accent); transform: scale(1.05); }

/* Reveal Animations */
.reveal { opacity: 0; transform: translateY(60px); transition: var(--transition-smooth); }
.reveal.revealed { opacity: 1; transform: translateY(0); }

/* Common Layout */
section { padding: 10rem 5%; min-height: 100vh; display: flex; flex-direction: column; justify-content: center; position: relative; }
.container { max-width: 1200px; margin: 0 auto; width: 100%; position: relative; z-index: 2; }

/* Hero Section */
#hero { text-align: center; height: 100vh; padding: 0; display: flex; align-items: center; justify-content: center; }
#home { text-align: center; height: 100vh; padding: 0; display: flex; align-items: center; justify-content: center; }
.hero-content { pointer-events: none; }
.hero-content .social-links, .hero-content .scroll-indicator { pointer-events: auto; }
#hero h1 { font-size: clamp(4rem, 10vw, 9rem); margin-bottom: 0.5rem; letter-spacing: -0.05em; }
.subtitle-container { font-size: clamp(1.2rem, 3vw, 2.5rem); color: var(--text-secondary); height: 3.5rem; margin-bottom: 3rem; font-weight: 500; }
.typing-cursor {
  display: inline-block; width: 3px; height: 1.1em;
  background-color: var(--accent); vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero-tagline { color: var(--text-secondary); max-width: 600px; margin: 0 auto 4rem; font-size: 1.2rem; }
.social-links { display: flex; justify-content: center; gap: 1.5rem; }
.social-links a {
  color: var(--text-primary); font-size: 1.5rem; transition: var(--transition-spring);
  display: flex; align-items: center; justify-content: center;
  width: 54px; height: 54px; border-radius: 50%;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur); box-shadow: var(--glass-shadow);
}
.social-links a:hover {
  color: #fff; background: var(--text-primary); border-color: var(--text-primary);
  transform: translateY(-5px) scale(1.1);
}
.scroll-indicator {
  position: absolute; bottom: 3rem; left: 50%; transform: translateX(-50%);
  animation: bounce 2s infinite; color: var(--text-tertiary); font-size: 1.5rem;
}
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); } 40% { transform: translateY(-10px) translateX(-50%); } 60% { transform: translateY(-5px) translateX(-50%); } }

/* About Section */
#about { background: var(--bg-secondary); }
#about .container { display: grid; grid-template-columns: 1fr 1.2fr; gap: 6rem; align-items: center; }
.about-image {
  background: var(--bg-card); border-radius: var(--radius-lg); padding: 1.5rem;
  box-shadow: 0 30px 60px rgba(0,0,0,0.08); border: 1px solid var(--glass-border);
}
.about-image-inner {
  background: var(--bg-secondary); border-radius: calc(var(--radius-lg) - 1rem);
  aspect-ratio: 4/5; display: flex; justify-content: center; align-items: center;
  font-size: 6rem; font-weight: 800; color: var(--text-tertiary); overflow: hidden;
}
.profile-photo {
  width: 100%; height: 100%; object-fit: cover;
}
.about-text p { color: var(--text-secondary); font-size: 1.25rem; margin-bottom: 2.5rem; font-weight: 400; line-height: 1.7; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius-md); padding: 2rem 1.5rem; text-align: center;
  box-shadow: var(--glass-shadow); transition: var(--transition-smooth);
}
.stat-card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
.stat-number { font-size: 3rem; font-weight: 800; color: var(--text-primary); margin-bottom: 0.5rem; letter-spacing: -0.05em; }
.stat-label { font-size: 0.85rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; }

/* Skills Section */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; }
.skill-category {
  background: var(--bg-card); border-radius: var(--radius-lg); padding: 3rem;
  border: 1px solid var(--glass-border); transition: var(--transition-smooth);
  box-shadow: var(--glass-shadow);
}
.skill-category:hover { transform: translateY(-8px); box-shadow: 0 30px 60px rgba(0,0,0,0.06); }
.skill-category h3 { margin-bottom: 2rem; color: var(--text-primary); font-size: 1.5rem; }
.skill-item { margin-bottom: 1.5rem; }
.skill-info { display: flex; justify-content: space-between; margin-bottom: 0.8rem; font-size: 1rem; font-weight: 600; }
.skill-bar { width: 100%; height: 6px; background: var(--bg-secondary); border-radius: 3px; overflow: hidden; }
.skill-progress { height: 100%; background: var(--accent-gradient); width: 0; transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1); border-radius: 3px; }

/* Projects Section */
#projects { background: var(--bg-secondary); }
.project-showcase { display: flex; flex-direction: column; gap: 8rem; }
.project-card {
  display: grid; grid-template-columns: 1fr; gap: 4rem;
  background: var(--bg-card); border-radius: var(--radius-lg); padding: 4rem;
  border: 1px solid var(--glass-border); transition: var(--transition-smooth);
  box-shadow: 0 20px 40px rgba(0,0,0,0.04);
}
.project-card:hover { transform: translateY(-10px); box-shadow: 0 40px 80px rgba(0,0,0,0.1); }
@media (min-width: 1024px) {
  .project-card { grid-template-columns: 1fr; }
}
.project-media {
  border-radius: var(--radius-md); overflow: hidden;
  height: 50vh; min-height: 300px; max-height: 600px;
  background: var(--bg-secondary); position: relative;
}
.project-media img, .project-media video { width: 100%; height: 100%; object-fit: cover; }
.project-content h3 { font-size: 3rem; margin-bottom: 1.5rem; }
.project-content p { color: var(--text-secondary); margin-bottom: 2.5rem; font-size: 1.2rem; line-height: 1.7; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 1rem; }
.tech-tag {
  background: var(--bg-secondary); border: 1px solid var(--glass-border);
  padding: 0.6rem 1.2rem; border-radius: 30px; font-size: 0.85rem;
  color: var(--text-primary); font-weight: 600;
}
.project-date {
  color: var(--accent); font-weight: 900; font-size: 0.95rem; margin-bottom: 0.5rem;
  text-transform: uppercase; letter-spacing: 1px; display: flex; align-items: center; gap: 0.5rem;
}
.project-links {
  display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap;
}
.proj-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--bg-secondary); padding: 0.8rem 1.2rem; border-radius: var(--radius-sm);
  color: var(--text-primary); text-decoration: none; font-weight: 600; font-size: 0.95rem;
  transition: var(--transition-smooth); border: 1px solid var(--glass-border);
}
.proj-link:hover {
  background: var(--text-primary); color: #fff; transform: translateY(-3px); box-shadow: var(--glass-shadow);
}

/* Image Slider */
.slider-container {
  width: 100%; height: 100%; overflow: hidden; position: relative;
}
.slider-track {
  display: flex; height: 100%;
}
.slide-img-full {
  height: 100%; object-fit: cover;
}

/* Experience Section */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 50%; transform: translateX(-50%); width: 2px; height: 100%; background: #e5e5ea; }
.timeline-item { margin-bottom: 5rem; position: relative; width: 50%; padding-right: 4rem; }
.timeline-item:nth-child(even) { margin-left: auto; padding-right: 0; padding-left: 4rem; }
.timeline-dot {
  position: absolute; right: -12px; top: 0; width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg-primary); border: 4px solid var(--text-primary);
  box-shadow: 0 0 0 4px rgba(29, 29, 31, 0.1);
}
.timeline-item:nth-child(even) .timeline-dot { left: -12px; right: auto; }
.timeline-content {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius-md); padding: 3rem;
  box-shadow: var(--glass-shadow); transition: var(--transition-smooth);
}
.timeline-content:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
.timeline-date { color: var(--accent); font-size: 1rem; font-weight: 700; margin-bottom: 1rem; display: block; letter-spacing: 1px; }
.timeline-content h3 { margin-bottom: 0.5rem; font-size: 1.8rem; }
.timeline-content h4 { color: var(--text-secondary); font-weight: 600; margin-bottom: 1.5rem; font-size: 1.1rem; }
.timeline-content p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.6; }

/* Education Section */
#education { background: var(--bg-secondary); }
.education-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 3rem; margin-bottom: 5rem; }
.edu-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 3rem; border: 1px solid var(--glass-border); box-shadow: var(--glass-shadow); }
.edu-card h3 { color: var(--text-primary); font-size: 1.5rem; margin-bottom: 0.5rem; }
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
.cert-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  padding: 2rem 1.5rem; border-radius: var(--radius-md); text-align: center;
  font-size: 1rem; font-weight: 600; color: var(--text-secondary);
  transition: var(--transition-smooth); box-shadow: var(--glass-shadow);
}
.cert-card:hover { color: var(--text-primary); border-color: var(--text-primary); transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.06); }

/* Contact Section */
#contact .container { max-width: 700px; }
.contact-form {
  display: flex; flex-direction: column; gap: 2rem;
  background: var(--bg-card); padding: 4rem; border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border); box-shadow: 0 30px 60px rgba(0,0,0,0.08);
}
.form-group { display: flex; flex-direction: column; gap: 0.8rem; }
.form-group label { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.form-group input, .form-group textarea {
  background: var(--bg-secondary); border: 1px solid transparent;
  padding: 1.2rem; border-radius: var(--radius-sm); color: var(--text-primary);
  font-family: var(--font-primary); font-size: 1rem; transition: all 0.3s ease;
}
.form-group input:focus, .form-group textarea:focus { outline: none; background: var(--bg-primary); border-color: var(--accent); box-shadow: 0 0 0 4px rgba(41, 151, 255, 0.2); }
.submit-btn {
  background: var(--text-primary); color: #fff; border: none; padding: 1.5rem;
  border-radius: var(--radius-sm); font-weight: 700; font-size: 1.1rem; cursor: pointer;
  transition: all 0.3s ease;
}
.submit-btn:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 10px 20px rgba(41, 151, 255, 0.3); }
.contact-info { margin-top: 4rem; text-align: center; color: var(--text-secondary); font-weight: 600; font-size: 1.1rem; display: flex; justify-content: center; gap: 3rem;}

/* Footer */
footer { padding: 3rem; text-align: center; color: var(--text-tertiary); border-top: 1px solid #e5e5ea; font-size: 1rem; background: var(--bg-primary); font-weight: 500; }

/* Mobile Adjustments */
@media (max-width: 768px) {
  nav { padding: 0.8rem 3%; flex-wrap: wrap; height: auto; }
  .logo { font-size: 1rem; margin-bottom: 0.3rem; }
  .nav-links { 
    display: flex; 
    overflow-x: auto; 
    width: 100%; 
    gap: 0.8rem; 
    padding: 0.5rem 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-link { font-size: 0.8rem; white-space: nowrap; padding: 0.4rem 0.6rem; }
  section { padding: 6rem 4% 4rem; min-height: auto; }
  h2 { font-size: clamp(1.8rem, 5vw, 3rem); margin-bottom: 2rem; }
  #about .container { grid-template-columns: 1fr; gap: 2rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 0; }
  .timeline-item { width: 100%; padding-left: 2.5rem; padding-right: 0; }
  .timeline-item:nth-child(even) { padding-left: 2.5rem; }
  .timeline-dot { left: -12px !important; right: auto !important; }
  .project-card { padding: 1rem; gap: 1rem; }
  .project-content h3 { font-size: 1.6rem; }
  .project-media { height: auto; min-height: 220px; max-height: 400px; }
  .project-media img, .project-media video { object-fit: contain; }
  .slider-container { height: 100%; overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .slider-container::-webkit-scrollbar { display: none; }
  .slider-track { animation: none !important; }
  .slide-img-full { flex: 0 0 100%; width: 100%; scroll-snap-align: start; object-fit: contain; }
  .education-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .contact-info { flex-direction: column; gap: 1rem; }
  .contact-form { padding: 2rem; }
  #hero, #home { height: 100vh; padding: 0; }
  #hero h1, #home h1 { font-size: clamp(2.5rem, 8vw, 4rem); }
  .subtitle-container { font-size: clamp(1rem, 3vw, 1.5rem); height: 2.5rem; }
  .hero-tagline { font-size: 1rem; }
  .social-links a { width: 44px; height: 44px; font-size: 1.2rem; }
  .about-image { padding: 1rem; }
}




/* ==========================================================================
   Rich Interactive Certifications Gallery & Lightbox
   ========================================================================== */

.cert-controls-container {
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cert-search-wrapper {
  position: relative;
  max-width: 480px;
  width: 100%;
}

.cert-search-wrapper i {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1rem;
  pointer-events: none;
}

.cert-search-input {
  width: 100%;
  padding: 0.9rem 1.2rem 0.9rem 2.8rem;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.cert-search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(41, 151, 255, 0.25);
  background: rgba(20, 20, 24, 0.85);
}

.cert-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.cert-filter-pill {
  padding: 0.55rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.cert-filter-pill:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-1px);
}

.cert-filter-pill.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 4px 15px rgba(41, 151, 255, 0.35);
}

.cert-filter-pill .pill-count {
  font-size: 0.75rem;
  opacity: 0.8;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
}

.cert-filter-pill.active .pill-count {
  background: rgba(255, 255, 255, 0.25);
}

/* Certifications Gallery Grid */
.certifications-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

/* Rich Certificate Card */
@keyframes certCardFadeIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cert-card-rich {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s ease, box-shadow 0.35s ease;
  backdrop-filter: blur(12px);
  position: relative;
  opacity: 1 !important;
  animation: certCardFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.cert-card-rich.reveal {
  opacity: 1 !important;
  transform: none !important;
}

.cert-card-rich:hover {
  transform: translateY(-6px);
  border-color: rgba(41, 151, 255, 0.5);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45), 0 0 24px rgba(41, 151, 255, 0.15);
}

.cert-card-image-box {
  position: relative;
  width: 100%;
  height: 220px;
  background: #09090b;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-card-image-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 10px;
  transition: transform 0.5s ease;
}

.cert-card-rich:hover .cert-card-image-box img {
  transform: scale(1.04);
}

.cert-card-image-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(2px);
}

.cert-card-image-box:hover .cert-card-image-overlay {
  opacity: 1;
}

.cert-overlay-btn {
  padding: 0.6rem 1.2rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  backdrop-filter: blur(8px);
}

.cert-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.cert-badges-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}

.cert-category-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  background: rgba(41, 151, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(41, 151, 255, 0.25);
}

.cert-date-tag {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.cert-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.cert-issuer {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.cert-description {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.cert-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--glass-border);
  gap: 0.5rem;
}

.cert-id-badge {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 170px;
}

.cert-btn-view {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  padding: 0.45rem 0.95rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.cert-btn-view:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}

/* ==========================================================================
   Full-Screen Lightbox Modal
   ========================================================================== */

.cert-lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.cert-lightbox-modal.active {
  opacity: 1;
  visibility: visible;
}

.cert-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(16px);
}

.cert-lightbox-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  max-width: 950px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  z-index: 10;
}

.cert-lightbox-img-pane {
  background: #08080a;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--glass-border);
}

.cert-lightbox-img-pane img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.cert-lightbox-info-pane {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
}

.cert-lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.2rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 20;
  transition: all 0.2s ease;
}

.cert-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.cert-lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  z-index: 20;
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
}

.cert-lightbox-nav-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-50%) scale(1.1);
}

.cert-lightbox-nav-btn.prev { left: 1rem; }
.cert-lightbox-nav-btn.next { right: 1rem; }

@media (max-width: 860px) {
  .cert-lightbox-card {
    grid-template-columns: 1fr;
    max-height: 85vh;
  }
  .cert-lightbox-img-pane {
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
    padding: 1.5rem;
  }
  .cert-lightbox-info-pane {
    padding: 1.5rem;
  }
  .cert-lightbox-nav-btn.prev { left: 0.25rem; }
  .cert-lightbox-nav-btn.next { right: 0.25rem; }
  .certifications-gallery-grid {
    grid-template-columns: 1fr;
  }
}


/* Enhanced Project Showcase Styles */
.project-card {
  opacity: 1 !important;
  animation: certCardFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.project-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.project-category-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  background: rgba(41, 151, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(41, 151, 255, 0.25);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.project-desc-clamp {
  max-height: 140px;
  overflow: hidden;
  position: relative;
  transition: max-height 0.4s ease;
  line-height: 1.7;
  color: var(--text-secondary);
  white-space: pre-line;
  margin-bottom: 0.5rem;
  font-size: 0.98rem;
}

.project-desc-clamp.expanded {
  max-height: 3000px;
}

.project-desc-clamp:not(.expanded)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
  background: linear-gradient(transparent, var(--bg-card));
  pointer-events: none;
}

.project-read-more-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0;
  transition: color 0.2s ease;
}

.project-read-more-btn:hover {
  text-decoration: underline;
  color: #60afff;
}

.proj-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.25s ease;
  text-decoration: none;
  cursor: pointer;
}

.proj-btn-github {
  background: #18191c;
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.proj-btn-github:hover {
  background: #000000;
  border-color: var(--accent);
  box-shadow: 0 4px 15px rgba(41, 151, 255, 0.35);
  transform: translateY(-2px);
}

.proj-btn-sub {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary) !important;
  border: 1px solid var(--glass-border);
}

.proj-btn-sub:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.proj-btn-video {
  background: rgba(255, 60, 60, 0.12);
  color: #ff6b6b !important;
  border: 1px solid rgba(255, 60, 60, 0.3);
}

.proj-btn-video:hover {
  background: #ff4444;
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 60, 60, 0.35);
}

.proj-btn-linkedin {
  background: rgba(10, 102, 194, 0.12);
  color: #4da3ff !important;
  border: 1px solid rgba(10, 102, 194, 0.3);
}

.proj-btn-linkedin:hover {
  background: #0a66c2;
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(10, 102, 194, 0.35);
}

/* ==========================================================================
   PREMIUM ULTRA-SMOOTH ANIMATIONS & VISUAL ENGINE (v47)
   - 100% Hardware-Accelerated (Zero-Lag, 60-120 FPS on all devices)
   - Native Crisp Cursor Preserved Everywhere
   - Apple / Linear / Vercel Pro Aesthetic
   ========================================================================== */

/* Top Reading Scroll Progress Bar (Pure GPU Compositor Layer) */
.scroll-progress-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #2997ff, #00ffff, #bf5af2, #ff375f);
  z-index: 999999;
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 0.08s linear;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(41, 151, 255, 0.55);
}

/* Fluid Animated Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, #2997ff 0%, #00ffff 25%, #bf5af2 60%, #ff375f 85%, #2997ff 100%);
  background-size: 260% 260%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  animation: gradientFlow 9s ease-in-out infinite alternate;
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

/* Premium Card Elevation & Specular Glass Edge (GPU Accelerated) */
.project-card,
.bench-card,
.tax-card,
.cert-card,
.cert-card-rich,
.stat-card,
.exp-card,
.exp-kpi-card,
.interactive-card,
.skill-card-rich,
.emblem-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s ease,
              background-color 0.3s ease !important;
  will-change: transform, box-shadow;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04), inset 0 1px 1px 0 rgba(255, 255, 255, 0.2);
}

.project-card:hover,
.bench-card:hover,
.tax-card:hover,
.cert-card:hover,
.cert-card-rich:hover,
.stat-card:hover,
.exp-card:hover,
.interactive-card:hover,
.skill-card-rich:hover,
.emblem-card:hover {
  transform: translateY(-6px) scale(1.008);
  border-color: rgba(41, 151, 255, 0.45) !important;
  box-shadow: 0 20px 42px -12px rgba(0, 0, 0, 0.14),
              0 0 26px -4px rgba(41, 151, 255, 0.22),
              inset 0 1px 1px 0 rgba(255, 255, 255, 0.45) !important;
}

/* Staggered Scroll Reveal Entrance */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.55s cubic-bezier(0.16, 1, 0.3, 1) !important;
  transition-delay: calc(var(--stagger-index, 0) * 0.038s);
  will-change: opacity, transform;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
  will-change: auto;
}

/* Project Card Media Zoom Polish */
.project-media {
  overflow: hidden;
  border-radius: var(--radius-md);
}

.project-media img,
.project-media video {
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1), filter 0.4s ease;
  will-change: transform;
}

.project-card:hover .project-media img,
.project-card:hover .project-media video {
  transform: scale(1.035);
}

/* Hardware Bench Icon Spring Micro-Interaction */
.bench-icon {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.3s ease;
}

.bench-card:hover .bench-icon {
  transform: scale(1.18) rotate(5deg);
  color: var(--accent) !important;
}

/* Interactive Tech Pills & Tags */
.bench-tag,
.tax-pill,
.tax-applied-pill,
.tech-tag {
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.22s ease,
              border-color 0.22s ease,
              box-shadow 0.22s ease;
}

.bench-tag:hover,
.tax-pill:hover,
.tax-applied-pill:hover,
.tech-tag:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: rgba(41, 151, 255, 0.08);
  box-shadow: 0 4px 12px rgba(41, 151, 255, 0.15);
}

/* Specular Shimmer Sheen on CTA Buttons */
.btn-primary,
.cta-button,
.hero-cta-btn {
  position: relative;
  overflow: hidden;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.28s ease;
}

.btn-primary::after,
.cta-button::after,
.hero-cta-btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 220%;
  height: 200%;
  background: linear-gradient(
    60deg,
    transparent 40%,
    rgba(255, 255, 255, 0.26) 50%,
    transparent 60%
  );
  transform: translateX(-100%);
  transition: transform 0.75s ease;
  pointer-events: none;
}

.btn-primary:hover::after,
.cta-button:hover::after,
.hero-cta-btn:hover::after {
  transform: translateX(100%);
}

.btn-primary:hover,
.cta-button:hover,
.hero-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(41, 151, 255, 0.45);
}

.btn-primary:active,
.cta-button:active,
.hero-cta-btn:active {
  transform: scale(0.97);
}

/* Tactile Spring on Filter Pills */
.bench-filter-btn,
.cert-filter-pill,
.filter-btn {
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.2s ease,
              border-color 0.2s ease,
              box-shadow 0.2s ease !important;
}

.bench-filter-btn:hover,
.cert-filter-pill:hover,
.filter-btn:hover {
  transform: translateY(-2px);
}

.bench-filter-btn:active,
.cert-filter-pill:active,
.filter-btn:active {
  transform: scale(0.95);
}

.bench-filter-btn.active,
.tax-pill.active,
.cert-filter-pill.active {
  background: var(--accent) !important;
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(41, 151, 255, 0.35) !important;
}

/* Refined Animated Navbar Link Underline */
.nav-link {
  position: relative;
  transition: color 0.25s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              left 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

/* Social Link Icon Elastic Springs */
.social-links a {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              background-color 0.25s ease,
              border-color 0.25s ease,
              box-shadow 0.25s ease !important;
}

.social-links a:hover {
  transform: translateY(-5px) scale(1.12);
  box-shadow: 0 12px 28px -4px rgba(41, 151, 255, 0.35);
  border-color: var(--accent);
}

/* Stat Number Gradient Accent on Hover */
.stat-card:hover .stat-number {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: all 0.35s ease;
}

/* Floating Subtle Breathing for Badges */
@keyframes smoothFloatPill {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.hero-chip-item,
.tax-cat-badge {
  animation: smoothFloatPill 5s ease-in-out infinite;
}

/* Floating Back to Top Button */
.back-to-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s ease, border-color 0.2s ease;
}

.back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 12px 30px rgba(41, 151, 255, 0.3);
  color: var(--accent);
}

/* Respect User Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}



/* ==========================================================================
   MOBILE & CROSS-DEVICE CERTIFICATE & PROJECT VISIBILITY FIXES
   ========================================================================== */
#certifications-gallery {
  opacity: 1 !important;
  visibility: visible !important;
  display: grid !important;
  transform: none !important;
}

.cert-card-rich {
  opacity: 1 !important;
  visibility: visible !important;
  display: flex !important;
  transform: none !important;
}

@media (max-width: 768px) {
  .certifications-gallery-grid {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
    padding: 0 !important;
  }
  
  .cert-card-rich {
    width: 100% !important;
  }
  
  .cert-card-image-box {
    height: 220px !important;
  }

  .cert-controls-container {
    display: flex !important;
    flex-direction: column !important;
    gap: 1rem !important;
  }

  .cert-search-wrapper {
    width: 100% !important;
  }

  .cert-filter-pills {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    padding-bottom: 0.6rem !important;
    gap: 0.5rem !important;
  }

  .cert-filter-pill {
    flex-shrink: 0 !important;
    font-size: 0.8rem !important;
    padding: 0.45rem 0.9rem !important;
  }
}