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

/* ===== CSS VARIABLES ===== */
:root {
  --bg: #0a0a0f;
  --bg2: #0f0f1a;
  --card: rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.08);
  --text: #f0f0f5;
  --muted: #8888aa;
  --accent: #00d4aa;
  --accent2: #00b894;
  --accent-glow: rgba(0,212,170,0.18);
  --white: #ffffff;
  --font: 'Inter', sans-serif;
  --radius: 16px;
  --radius-sm: 8px;
  --nav-h: 72px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --shadow: 0 8px 40px rgba(0,0,0,0.4);
  --shadow-accent: 0 0 40px rgba(0,212,170,0.15);
}

/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:var(--font)}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--accent);border-radius:4px}

/* ===== TYPOGRAPHY ===== */
h1{font-size:clamp(3rem,7vw,6rem);font-weight:900;line-height:1.05;letter-spacing:-0.03em}
h2{font-size:clamp(2rem,4vw,3.5rem);font-weight:800;letter-spacing:-0.02em}
h3{font-size:1.5rem;font-weight:700}
h4{font-size:1.1rem;font-weight:600}
p{line-height:1.75;color:var(--muted)}

/* ===== LAYOUT ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:120px 0}

/* ===== GRADIENT TEXT ===== */
.gradient-text{background:linear-gradient(135deg,var(--accent),#7b61ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-size:0.95rem;font-weight:600;transition:var(--transition);letter-spacing:0.01em}
.btn-primary{background:var(--accent);color:#000;box-shadow:0 0 20px rgba(0,212,170,0.3)}
.btn-primary:hover{background:#00f0c2;transform:translateY(-2px);box-shadow:0 0 40px rgba(0,212,170,0.5)}
.btn-outline{border:1.5px solid var(--card-border);color:var(--text);background:var(--card);backdrop-filter:blur(10px)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:0.85rem}

/* ===== TAGS ===== */
.tag{display:inline-block;padding:4px 12px;border-radius:50px;font-size:0.75rem;font-weight:600;background:rgba(0,212,170,0.1);color:var(--accent);border:1px solid rgba(0,212,170,0.2)}

/* ===== SECTION HEADER ===== */
.section-header{text-align:center;margin-bottom:64px}
.section-label{display:inline-block;font-size:0.8rem;font-weight:700;letter-spacing:0.15em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.section-header p{max-width:560px;margin:16px auto 0}

/* ===== FADE-IN ANIMATION ===== */
.fade-up{opacity:0;transform:translateY(40px);transition:opacity 0.7s ease,transform 0.7s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ===== NAV ===== */
nav{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);display:flex;align-items:center;transition:var(--transition)}
nav.scrolled{background:rgba(10,10,15,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--card-border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.nav-logo{font-size:1.2rem;font-weight:800;letter-spacing:-0.02em;color:var(--white)}
.nav-logo span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:8px 16px;border-radius:8px;font-size:0.9rem;font-weight:500;color:var(--muted);transition:var(--transition)}
.nav-links a:hover,.nav-links a.active{color:var(--white);background:var(--card)}
.nav-cta{padding:10px 22px;background:var(--accent);color:#000;border-radius:50px;font-size:0.85rem;font-weight:700;transition:var(--transition)}
.nav-cta:hover{background:#00f0c2;transform:translateY(-1px)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}

/* ===== HERO ===== */
#hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:var(--nav-h)}
.hero-bg{position:absolute;inset:0;z-index:0}
.mesh-gradient{position:absolute;inset:0;background:
  radial-gradient(ellipse 80% 80% at 20% 50%, rgba(0,212,170,0.12) 0%, transparent 60%),
  radial-gradient(ellipse 60% 60% at 80% 20%, rgba(123,97,255,0.1) 0%, transparent 60%),
  radial-gradient(ellipse 50% 50% at 60% 80%, rgba(0,212,170,0.06) 0%, transparent 60%);
  animation:meshPulse 8s ease-in-out infinite alternate}
@keyframes meshPulse{from{opacity:0.7}to{opacity:1}}
.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.02) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black,transparent)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:50px;border:1px solid var(--card-border);background:var(--card);backdrop-filter:blur(10px);font-size:0.8rem;font-weight:600;color:var(--muted);margin-bottom:24px}
.hero-badge::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--accent);animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0.3}}
.hero-title{margin-bottom:16px}
.hero-title em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:clamp(1rem,2vw,1.25rem);color:var(--muted);margin-bottom:40px;font-weight:400;max-width:480px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:48px}
.stat{text-align:left}
.stat-num{font-size:1.8rem;font-weight:800;color:var(--white)}
.stat-label{font-size:0.8rem;color:var(--muted);font-weight:500;margin-top:2px}
.hero-visual{display:flex;justify-content:center;align-items:center}
.portrait-ring{position:relative;width:340px;height:340px}
.portrait-ring::before{content:'';position:absolute;inset:-3px;border-radius:50%;background:conic-gradient(var(--accent),#7b61ff,var(--accent));animation:spin 8s linear infinite}
.portrait-ring::after{content:'';position:absolute;inset:0;border-radius:50%;background:var(--bg);transform:scale(0.98)}
.portrait-img{position:absolute;inset:4px;border-radius:50%;background:linear-gradient(135deg,var(--bg2),#1a1a2e);z-index:1;display:flex;align-items:center;justify-content:center;overflow:hidden}
.portrait-img img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.portrait-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--muted);font-size:0.85rem}
.portrait-placeholder svg{width:80px;height:80px;opacity:0.4}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.floating-card{position:absolute;background:rgba(10,10,20,0.9);backdrop-filter:blur(20px);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:12px 16px;font-size:0.8rem;animation:float 4s ease-in-out infinite}
.floating-card.fc1{bottom:-10px;left:-60px;animation-delay:0s}
.floating-card.fc2{top:-10px;right:-60px;animation-delay:2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.fc-label{color:var(--muted);font-size:0.7rem;margin-bottom:4px}
.fc-value{color:var(--white);font-weight:700}
.scroll-hint{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--muted);font-size:0.75rem;animation:float 3s ease-in-out infinite;z-index:1;pointer-events:none}
.scroll-hint-line{width:1px;height:40px;background:linear-gradient(to bottom,var(--accent),transparent)}

/* ===== ABOUT ===== */
#about{background:var(--bg2)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.about-text p{margin-bottom:20px;font-size:1.05rem}
.about-text p strong{color:var(--text)}
.skills-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px;margin-top:32px}
.skill-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:16px;text-align:center;transition:var(--transition)}
.skill-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-accent)}
.skill-icon{font-size:1.5rem;margin-bottom:8px}
.skill-name{font-size:0.8rem;font-weight:600;color:var(--text)}
.edu-timeline{margin-top:48px}
.edu-item{display:flex;gap:20px;margin-bottom:32px;position:relative}
.edu-item::before{content:'';position:absolute;left:19px;top:40px;bottom:-32px;width:1px;background:var(--card-border)}
.edu-item:last-child::before{display:none}
.edu-dot{width:40px;height:40px;border-radius:50%;background:var(--accent-glow);border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}
.edu-content h4{color:var(--text);margin-bottom:4px}
.edu-content span{font-size:0.8rem;color:var(--accent);font-weight:600}
.edu-content p{margin-top:4px;font-size:0.9rem}

/* ===== PROJECTS ===== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px}
.project-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);cursor:pointer;position:relative}
.project-card:hover{border-color:rgba(0,212,170,0.3);transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,0.4),0 0 40px rgba(0,212,170,0.08)}
.card-visual{height:180px;background:linear-gradient(135deg,var(--bg2),#1a1a2e);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.card-visual svg{width:80px;height:80px;opacity:0.4;color:var(--accent)}
.card-visual-bg{position:absolute;inset:0;background:radial-gradient(circle at center,var(--accent-glow),transparent);opacity:0.5}
.card-body{padding:24px}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.card-body h3{color:var(--white);margin-bottom:8px;font-size:1.15rem}
.card-body p{font-size:0.9rem;line-height:1.6}
.card-footer{padding:16px 24px;border-top:1px solid var(--card-border);display:flex;align-items:center;justify-content:space-between}
.card-arrow{color:var(--accent);transition:var(--transition)}
.project-card:hover .card-arrow{transform:translateX(4px)}
.workshop-card{background:linear-gradient(135deg,rgba(0,212,170,0.08),rgba(123,97,255,0.06));border-color:rgba(0,212,170,0.2);grid-column:1/-1}

/* ===== MODAL ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.85);backdrop-filter:blur(10px);z-index:2000;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;visibility:hidden;transition:var(--transition)}
.modal-overlay.open{opacity:1;visibility:visible}
.modal{background:#0f0f1a;border:1px solid var(--card-border);border-radius:var(--radius);width:100%;max-width:760px;max-height:90vh;overflow-y:auto;transform:scale(0.95);transition:var(--transition)}
.modal-overlay.open .modal{transform:scale(1)}
.modal-header{padding:32px 32px 0;display:flex;justify-content:space-between;align-items:start}
.modal-close{width:36px;height:36px;border-radius:50%;background:var(--card);border:1px solid var(--card-border);color:var(--muted);font-size:1.2rem;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.modal-close:hover{color:var(--white);border-color:var(--accent)}
.modal-tabs{display:flex;gap:4px;padding:24px 32px 0;border-bottom:1px solid var(--card-border)}
.modal-tab{padding:10px 20px;border-radius:8px 8px 0 0;font-size:0.875rem;font-weight:600;color:var(--muted);transition:var(--transition);border-bottom:2px solid transparent}
.modal-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.modal-body{padding:32px}
.modal-panel{display:none}
.modal-panel.active{display:block}
pre{background:rgba(0,0,0,0.4);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:20px;overflow-x:auto;font-size:0.82rem;line-height:1.6;color:#a8d8a8}
code{font-family:'JetBrains Mono',monospace;font-size:0.85em;background:rgba(0,212,170,0.1);padding:2px 6px;border-radius:4px;color:var(--accent)}
.wiring-diagram{background:rgba(0,0,0,0.3);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:24px;font-family:monospace;font-size:0.8rem;line-height:1.8;color:#8888aa;white-space:pre}

/* ===== EXPERIENCE ===== */
#experience{background:var(--bg2)}
.exp-grid{display:grid;grid-template-columns:2fr 1fr;gap:48px;align-items:start}
.cert-list{display:flex;flex-direction:column;gap:12px}
.cert-item{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:16px 20px;display:flex;align-items:center;gap:12px;transition:var(--transition)}
.cert-item:hover{border-color:rgba(0,212,170,0.2);transform:translateX(4px)}
.cert-icon{font-size:1.2rem}
.cert-name{font-size:0.875rem;font-weight:600;color:var(--text)}
.cert-org{font-size:0.75rem;color:var(--muted)}

/* ===== RESUME ===== */
.resume-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.timeline-item{display:flex;gap:20px;margin-bottom:32px;position:relative}
.timeline-item::before{content:'';position:absolute;left:19px;top:40px;bottom:-32px;width:1px;background:var(--card-border)}
.timeline-item:last-child::before{display:none}
.timeline-dot{width:40px;height:40px;border-radius:50%;background:var(--accent-glow);border:2px solid var(--accent);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.7rem;color:var(--accent)}
.timeline-content h4{color:var(--text)}
.timeline-content .time{font-size:0.8rem;color:var(--accent);font-weight:600;display:block;margin-bottom:4px}
.timeline-content p{font-size:0.875rem;margin-top:4px}
.resume-download{text-align:center;margin-top:48px;padding:48px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius)}

/* ===== BLOG ===== */
#blog{background:var(--bg2)}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.blog-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.blog-card:hover{transform:translateY(-4px);border-color:rgba(0,212,170,0.2)}
.blog-img{height:160px;background:linear-gradient(135deg,#1a1a2e,#0f0f1a);display:flex;align-items:center;justify-content:center;font-size:2.5rem}
.blog-body{padding:24px}
.blog-meta{display:flex;gap:16px;margin-bottom:12px;font-size:0.75rem;color:var(--muted)}
.blog-body h3{font-size:1.1rem;color:var(--white);margin-bottom:8px}
.blog-body p{font-size:0.875rem}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.contact-form{display:flex;flex-direction:column;gap:20px}
.form-group{display:flex;flex-direction:column;gap:8px}
.form-group label{font-size:0.85rem;font-weight:600;color:var(--text)}
.form-group input,.form-group textarea{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:14px 18px;color:var(--text);font-family:var(--font);font-size:0.9rem;transition:var(--transition);resize:none}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.form-group textarea{height:140px}
.social-links{display:flex;flex-direction:column;gap:16px;margin-top:32px}
.social-link{display:flex;align-items:center;gap:16px;padding:20px 24px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);transition:var(--transition)}
.social-link:hover{border-color:rgba(0,212,170,0.3);transform:translateX(4px)}
.social-link-icon{width:44px;height:44px;border-radius:10px;background:var(--accent-glow);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.social-link-info h4{font-size:0.95rem;color:var(--text)}
.social-link-info p{font-size:0.8rem}
.form-success{display:none;padding:16px 20px;background:rgba(0,212,170,0.1);border:1px solid rgba(0,212,170,0.3);border-radius:var(--radius-sm);color:var(--accent);font-size:0.875rem;text-align:center}
.form-success.show{display:block}

/* ===== FOOTER ===== */
footer{background:var(--bg);border-top:1px solid var(--card-border);padding:48px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-logo{font-size:1.1rem;font-weight:800;color:var(--white)}
.footer-logo span{color:var(--accent)}
footer p{font-size:0.85rem}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:0.85rem;color:var(--muted);transition:var(--transition)}
.footer-links a:hover{color:var(--accent)}

/* ===== MOBILE NAV ===== */
.mobile-menu{position:fixed;inset:0;background:rgba(10,10,15,0.97);backdrop-filter:blur(20px);z-index:999;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:32px;opacity:0;visibility:hidden;transition:var(--transition)}
.mobile-menu.open{opacity:1;visibility:visible}
.mobile-menu a{font-size:2rem;font-weight:700;color:var(--text);transition:var(--transition)}
.mobile-menu a:hover{color:var(--accent)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;text-align:center;gap:60px}
  .hero-sub{margin:0 auto 40px}
  .hero-actions{justify-content:center}
  .hero-stats{justify-content:center}
  .hero-visual{order:-1}
  .portrait-ring{width:280px;height:280px}
  .about-grid{grid-template-columns:1fr}
  .exp-grid{grid-template-columns:1fr}
  .resume-layout{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  section{padding:80px 0}
  .nav-links{display:none}
  .nav-cta{display:none}
  .hamburger{display:flex}
  .projects-grid{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .workshop-card{grid-column:1}
}
@media(max-width:480px){
  .portrait-ring{width:220px;height:220px}
  .hero-actions{flex-direction:column;align-items:center}
  .modal{border-radius:12px}
  .modal-header,.modal-body{padding:20px}
  .modal-tabs{padding:16px 20px 0}
}