:root{
  --bg-color:#050b14;
  --glass-bg:rgba(255,255,255,0.03);
  --glass-border:rgba(255,255,255,0.1);
  --text-main:#f8fafc;
  --text-muted:#94a3b8;
  --accent:#00f0ff;
  --accent-glow:rgba(0,240,255,0.5);
  --radius:20px;
}

*{margin:0;padding:0;box-sizing:border-box;font-family:'Inter',sans-serif;scroll-behavior:smooth}
html{background-color:var(--bg-color);overflow-x:hidden;width:100%}
body{color:var(--text-main);line-height:1.6;max-width:100%;overflow-x:hidden;position:relative;background-color:transparent!important;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:40px 40px}
section{width:100%;overflow:hidden}

#particles-js{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none}
.glass{background:var(--glass-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:0 4px 30px rgba(0,0,0,0.1)}
.glass-pill{background:rgba(255,255,255,0.05);backdrop-filter:blur(15px);border:1px solid var(--glass-border);border-radius:50px;padding:8px 20px}
.glass-btn{background:rgba(255,255,255,0.05);backdrop-filter:blur(15px);border:1px solid var(--glass-border);color:#fff;transition:.3s}
.glass-btn:hover{background:#fff;color:var(--bg-color);transform:translateY(-2px)}

.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-padding{padding:80px 0}
.section-heading{font-size:2.5rem;margin-bottom:50px;text-align:center;font-weight:700;letter-spacing:-1px}
.sub-heading{text-align:center;margin:50px 0 30px;font-size:1.8rem}
.text-justify{text-align:justify}
.navbar{position:fixed;top:20px;left:50%;transform:translateX(-50%);width:min(1200px,calc(100% - 40px));padding:8px 15px;border-radius:50px;overflow:hidden;z-index:1000;will-change:transform}
.navbar.glass{backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
.nav-container{display:flex;justify-content:space-between;align-items:center;width:100%}
.nav-menu{display:flex;gap:5px;position:relative;background:rgba(0,0,0,0.2);padding:5px;border-radius:40px}
.nav-backdrop{position:absolute;top:0;left:0;background:rgba(255,255,255,0.08);border-radius:30px;z-index:1;pointer-events:none;transition:all .4s cubic-bezier(.25,.8,.25,1);opacity:0;border:1px solid rgba(255,255,255,.1)}
.navbar.scrolled{background:rgba(255,255,255,0.02);border-bottom:1px solid rgba(255,255,255,.1)}
.logo{display:flex;align-items:center;gap:12px}
.logo-img{width:45px;height:45px;border-radius:50%;object-fit:cover;border:2px solid var(--glass-border)}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text .tag{font-size:.8rem;font-weight:700;letter-spacing:2px;color:var(--accent)}
.nav-link{text-decoration:none;color:var(--text-muted);padding:8px 20px;border-radius:30px;font-size:.9rem;font-weight:500;position:relative;z-index:2;transition:color .3s}
.nav-link:hover,.nav-link.active{color:#fff}
.hamburger{display:none;cursor:pointer;flex-direction:column;gap:6px;padding:5px}
.bar{width:25px;height:3px;background:#fff;border-radius:2px;transition:.3s}

.mobile-nav{position:fixed;top:95px;left:5%;width:90%;z-index:500;background:rgba(255,255,255,0.02);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:20px;padding:20px;display:flex;flex-direction:column;gap:10px;opacity:0;visibility:hidden;transform:translateY(-20px);pointer-events:none;transition:all .4s cubic-bezier(.2,1,.3,1)}
.mobile-nav.active{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mobile-link{display:block;text-decoration:none;color:rgba(255,255,255,.85);font-size:1.1rem;font-weight:500;padding:14px 20px;border-radius:12px;text-align:center;transition:all .3s cubic-bezier(.25,1,.5,1);background:transparent}
.mobile-link:hover,.mobile-link.active{background:rgba(255,255,255,.12);color:#fff;transform:scale(1.02);box-shadow:0 4px 15px rgba(0,0,0,.1)}

/* Hero */
.hero-section{min-height:100vh;display:flex;align-items:center;padding-top:100px}
.hero-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:.85rem;margin-bottom:20px}
.status-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;box-shadow:0 0 8px var(--accent)}
.hero-title{font-size:4rem;line-height:1.1;font-weight:800;margin-bottom:10px}
.hero-role{font-size:1.5rem;color:var(--accent);margin-bottom:20px;font-weight:500}
.hero-value{max-width:600px;color:var(--text-muted);margin-bottom:40px;font-size:1.1rem}
.hero-cta{display:flex;gap:15px}
.btn{padding:12px 28px;border-radius:50px;font-weight:600;text-decoration:none;display:inline-flex;align-items:center;gap:8px;cursor:pointer;border:none}
.btn-primary{background:#fff;color:var(--bg-color)}
.btn-primary:hover{background:#e2e8f0}

.about-layout{display:flex;flex-direction:column;gap:30px}
.about-top{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}
.about-bottom{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.card{padding:25px;transition:transform .3s}
.card:hover{transform:translateY(-5px)}
.card h3{margin-bottom:15px;font-size:1.2rem;color:var(--accent)}
.about-text-content{display:flex;flex-direction:column;gap:30px}
.about-subgrid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.check-list{list-style:none}
.check-list li{margin-bottom:8px;padding-left:20px;position:relative}
.check-list li::before{content:'✓';color:var(--accent);position:absolute;left:0}
.stat-item{display:flex;flex-direction:column;align-items:center}
.stat-num{font-size:2.5rem;font-weight:700;color:#fff}
.summary-tags{display:flex;flex-direction:column;gap:5px;font-size:.9rem;color:var(--text-muted);margin-bottom:15px}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{background:rgba(255,255,255,.1);padding:5px 12px;border-radius:15px;font-size:.8rem}
.about-photo{height:100%;min-height:400px}
.photo-wrapper{position:relative;width:100%;height:100%}
.floating-photo{width:100%;height:100%;object-fit:cover;border-radius:var(--radius);position:absolute;z-index:2;animation:floatImg 6s infinite ease-in-out}
@keyframes floatImg{0%,100%{transform:translateY(0)}50%{transform:translateY(-15px)}}

.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:25px}
.skill-card{display:flex;flex-direction:column;justify-content:space-between}
.skill-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.skill-icon{font-size:1.5rem;color:var(--accent)}
.progress-wrapper{margin-top:15px}
.progress-info{display:flex;justify-content:space-between;font-size:.85rem;margin-bottom:5px}
.progress-bar{height:6px;background:rgba(255,255,255,.1);border-radius:3px;overflow:hidden}
.progress-bar .fill{height:100%;background:var(--accent);border-radius:3px;box-shadow:0 0 10px var(--accent)}
.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;margin-bottom:50px}
.project-card{padding:0;overflow:hidden}
.project-thumb img{width:100%;height:230px;object-fit:cover;transition:.5s}
.project-card:hover .project-thumb img{transform:scale(1.05)}
.project-info{padding:10px}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cert-card{display:flex;flex-direction:column;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease;cursor:pointer}
.cert-image{width:100%;height:250px;object-fit:cover;display:block;transition:transform .3s ease}
.cert-content{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1rem;flex-grow:1;justify-content:center}
.cert-content i{font-size:1.8rem;color:var(--accent)}
.cert-content span{font-size:.95rem;font-weight:600;text-align:center}
.cert-card:hover{transform:translateY(-8px);box-shadow:0 8px 32px rgba(0,240,255,.2)}
.cert-card:hover .cert-image{transform:scale(1.05)}
.skill-card,.project-card,.cert-card{will-change:transform,opacity;transform:translateZ(0);backface-visibility:hidden}

.sub-timeline{margin-top:20px;margin-left:20px;padding-left:20px;position:relative}
.timeline::before{content:'';position:absolute;left:0;top:0;width:2px;height:100%;background:rgba(255,255,255,.1);z-index:1;transition:clip-path 2s cubic-bezier(.4,0,.2,1);clip-path:inset(0 0 100% 0)}

.sub-timeline::before{content:'';position:absolute;top:-25px;left:-50px;width:50px;height:45px;border-bottom:2px dashed rgba(0,240,255,.4);border-left:2px dashed rgba(0,240,255,.4);border-radius:0 0 0 15px;z-index:-1;transition:clip-path 1.5s ease-in-out;transition-delay:.8s;clip-path:polygon(0 0,100% 0,100% 0,0 0)}

.sub-timeline::after{content:'';position:absolute;left:0;top:20px;bottom:0;border-left:2px dashed rgba(0,240,255,.4);z-index:1;transition:clip-path 2s cubic-bezier(.4,0,.2,1);transition-delay:1.5s;clip-path:inset(0 0 100% 0)}

.timeline.is-revealed::before{clip-path:inset(0 0 0 0)}
.sub-timeline.line-active::before{clip-path:polygon(0 0,100% 0,100% 100%,0 100%)}
.sub-timeline.line-active::after{clip-path:inset(0 0 0 0)}

.timeline-item.sub-item{margin-bottom:30px}
.timeline-item.sub-item:last-child{margin-bottom:0}
.timeline-dot.sub-dot{width:10px;height:10px;left:-25px;top:24px;background:var(--bg-color);border:2px solid var(--accent);box-shadow:0 0 8px var(--accent-glow)}
.timeline{position:relative;max-width:800px;margin:0 auto;padding-left:30px}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-dot{position:absolute;left:-35px;top:20px;width:12px;height:12px;background:var(--accent);border-radius:50%;box-shadow:0 0 10px var(--accent)}
.timeline-date{font-size:.9rem;color:var(--accent);margin-bottom:5px;font-weight:600}
.timeline-content .role{color:var(--text-muted);font-size:.9rem;margin-bottom:10px;font-style:italic}

/* Contact */
.contact-wrapper{display:grid;grid-template-columns:1fr 1.5fr;gap:30px}
.social-links{display:flex;gap:15px;margin-top:20px;flex-wrap:wrap}
.social-btn{width:45px;height:45px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.1);color:#fff;text-decoration:none;transition:.3s}
.social-btn:hover{background:var(--accent);transform:scale(1.1);color:var(--bg-color)}
.form-group{margin-bottom:15px}
.form-group label{display:block;margin-bottom:5px;font-size:.9rem;color:var(--text-muted)}
.glass-input{width:100%;background:rgba(0,0,0,.2);border:1px solid rgba(255,255,255,.1);padding:12px;border-radius:12px;color:#fff;outline:none;transition:.3s}
.glass-input:focus{border-color:var(--accent);background:rgba(0,0,0,.4)}

/* Footer */
.glass-footer{text-align:center;padding:30px;margin-top:50px;font-size:.9rem;color:var(--text-muted);border-top:1px solid var(--glass-border)}

/* Hamburger active state */
.hamburger.is-active .bar:nth-child(1){transform:translateY(8.5px) rotate(45deg)}
.hamburger.is-active .bar:nth-child(2){opacity:0;transform:translateX(-20px)}
.hamburger.is-active .bar:nth-child(3){transform:translateY(-8.5px) rotate(-45deg)}

/* Project link */
.project-link{position:relative;display:inline-block;text-decoration:none;color:inherit;transition:color .3s}
.project-link:hover{color:var(--accent)}
.project-link h3{margin:0;padding:0;display:inline-block;transition:all .3s;font-size:1.3rem;font-weight:600}
.project-link:hover h3{color:var(--accent)}
.project-link::after{content:'↗';margin-left:8px;font-size:.9em;opacity:0;transition:opacity .3s;display:inline-block;vertical-align:middle}
.project-link:hover::after{opacity:1}

/* Responsive */
@media (max-width:768px){
  .nav-menu{display:none}
  .hamburger{display:flex}
  .project-info{text-align:center}
  .hero-title{font-size:2.2rem}
  .hero-role{font-size:1.2rem}
  .about-layout,.about-text-content,.about-subgrid,.contact-wrapper{gap:20px}
  .card{padding:20px;margin-bottom:0}
  .about-top{display:flex;flex-direction:column-reverse;gap:20px}
  .about-bottom{grid-template-columns:1fr;gap:20px}
  .about-photo{min-height:350px}
  .floating-photo{position:relative}
  .cert-grid{grid-template-columns:repeat(2,1fr);gap:15px}
  .cert-image{height:120px}
  .cert-content{padding:.8rem}
  .cert-content i{font-size:1.5rem}
  .cert-content span{font-size:.85rem}
  .about-grid,.about-subgrid{grid-template-columns:1fr}
  .contact-wrapper{display:flex;flex-direction:column-reverse;gap:30px}
  .sub-timeline{margin-left:10px;padding-left:15px;overflow:visible!important}
  .sub-timeline::before{left:-40px;width:40px}
  .timeline-dot.sub-dot{left:-20px}
  .social-links{justify-content:center;width:100%;margin-top:.5rem}
  .contact{display:block!important;visibility:visible!important;opacity:1!important}
  .sub-timeline::after{left:-2px}
  *{-webkit-tap-highlight-color:transparent}
}

.timeline-content{will-change:transform,opacity}
.timeline,.timeline-item,.sub-timeline{overflow:visible!important}
#error-msg {color: #ff4d4d;font-size: 0.9rem;font-weight: 600;margin-bottom: 12px;display: none;animation: fadeIn 0.3s ease-in-out;}
@keyframes fadeIn {from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); }}
@keyframes shakeAlert {0%, 100% { transform: translateX(0); }20% { transform: translateX(-10px); }40% { transform: translateX(10px); }60% { transform: translateX(-10px); }80% { transform: translateX(10px); }}
#error-msg.shake-now {animation: shakeAlert 0.4s ease-in-out !important;}