:root {
  /* Default Dark Theme */
  --bg: #06070d;
  --surface: #0e1019;
  --card: #13151f;
  --accent: #00e5ff;
  --accent2: #ff2d6b;
  --accent3: #7b61ff;
  --text: #e8eaf2;
  --muted: #7a7f96;
  --border: rgba(255, 255, 255, 0.07);
  --glow: 0 0 40px rgba(0, 229, 255, 0.15);
  --nav-bg: rgba(6, 7, 13, 0.85);
}

[data-theme='light'] {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --card: #ffffff;
  --accent: #0070f3;
  --accent2: #eb00ff;
  --accent3: #7928ca;
  --text: #111827;
  --muted: #4b5563;
  --border: rgba(0, 0, 0, 0.08);
  --glow: 0 10px 30px rgba(0, 0, 0, 0.04);
  --nav-bg: rgba(245, 247, 250, 0.85);
}

    *,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{background:var(--bg);color:var(--text);font-family:'DM Sans',sans-serif;overflow-x:hidden}
    body::before{content:'';position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");pointer-events:none;z-index:9999;opacity:.35}
    nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:18px 6%;background:var(--nav-bg);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
    .logo-img{height:38px;filter:brightness(1.2)}
    .nav-links{display:flex;gap:36px;list-style:none}
    .nav-links a{color:var(--muted);text-decoration:none;font-family:'Space Mono',monospace;font-size:13px;letter-spacing:.08em;transition:color .3s}
    .nav-links a:hover{color:var(--accent)}
    .nav-burger{display:none;font-size:22px;cursor:pointer;color:var(--text)}
    .mobile-menu{display:none;flex-direction:column;position:fixed;top:73px;left:0;right:0;background:var(--nav-bg);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:99}
    .mobile-menu.open{display:flex}
    .mobile-menu a{color:var(--text);text-decoration:none;padding:16px 6%;border-bottom:1px solid var(--border);font-family:'Space Mono',monospace;font-size:14px}

    /* Theme Toggle Styling */
    .theme-toggle {
        background: var(--card);
        border: 1px solid var(--border);
        color: var(--text);
        width: 40px;
        height: 40px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        margin-left: 20px;
        font-size: 16px;
        box-shadow: var(--glow);
    }
    
    .theme-toggle:hover {
        transform: scale(1.1) rotate(15deg);
        border-color: var(--accent);
        color: var(--accent);
    }

    [data-theme='light'] .logo-img {
        filter: invert(1) brightness(0.2) contrast(1.2);
    }
    
    [data-theme='light'] .hero-bg {
        background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(0, 112, 243, 0.05) 0%, transparent 70%),
                    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(121, 40, 202, 0.05) 0%, transparent 60%);
    }

    [data-theme='light'] .hero-grid {
        background-image: linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
                          linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    }
    #hero{min-height:100vh;display:flex;align-items:center;padding:120px 6% 80px;position:relative;overflow:hidden}
    .hero-bg{position:absolute;inset:0;z-index:0;background:radial-gradient(ellipse 80% 60% at 60% 40%,rgba(0,229,255,0.06) 0%,transparent 70%),radial-gradient(ellipse 50% 50% at 20% 80%,rgba(123,97,255,0.06) 0%,transparent 60%)}
    .hero-grid{position:absolute;inset:0;z-index: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}
    .hero-content{position:relative;z-index:1;max-width:760px}
    .hero-tag{display:inline-flex;align-items:center;gap:8px;font-family:'Space Mono',monospace;font-size:12px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;border:1px solid rgba(0,229,255,0.3);border-radius:4px;padding:6px 14px;margin-bottom:28px}
    .hero-tag::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
    @keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}
    .hero-title{font-size:clamp(38px,5.5vw,76px);font-weight:700;line-height:1.05;margin-bottom:20px}
    .hero-title .name{color:var(--accent)}
    .hero-title .line2{display:block;color:var(--muted);font-size:.52em;font-weight:300;margin-top:8px}
    .hero-desc{color:var(--muted);font-size:17px;line-height:1.7;margin-bottom:36px;max-width:580px}
    .hero-cta{display:flex;gap:16px;flex-wrap:wrap}
    .btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#06070d;padding:12px 28px;border-radius:6px;font-weight:700;font-size:14px;text-decoration:none;transition:all .3s;letter-spacing:.03em}
    .btn-primary:hover{background:#fff;box-shadow:0 0 30px rgba(0,229,255,0.4);transform:translateY(-2px)}
    .btn-outline{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);color:var(--text);padding:12px 28px;border-radius:6px;font-size:14px;text-decoration:none;transition:all .3s}
    .btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
    .hero-stats{display:flex;gap:48px;margin-top:60px;padding-top:40px;border-top:1px solid var(--border)}
    .stat-num{font-family:'Space Mono',monospace;font-size:32px;font-weight:700;color:var(--accent)}
    .stat-label{font-size:13px;color:var(--muted);margin-top:2px}
    section{padding:100px 6%}
    .section-tag{font-family:'Space Mono',monospace;font-size:11px;letter-spacing:.15em;color:var(--accent);text-transform:uppercase;margin-bottom:12px;display:flex;align-items:center;gap:10px}
    .section-tag::after{content:'';flex:1;height:1px;background:rgba(0,229,255,0.2);max-width:100px}
    .section-title{font-size:clamp(28px,3.5vw,44px);font-weight:700;margin-bottom:16px}
    .section-sub{color:var(--muted);font-size:16px;max-width:560px;line-height:1.7;margin-bottom:60px}
    #about{background:var(--surface)}
    .about-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:80px;align-items:start}
    .about-img-wrap{position:relative}
    .about-img{width:100%;border-radius:12px;display:block;filter:saturate(.9) contrast(1.05)}
    .about-img-frame{position:absolute;inset:-12px;border-radius:16px;border:1px solid rgba(0,229,255,0.2);pointer-events:none}
    .about-img-frame::before{content:'';position:absolute;top:-1px;left:24px;right:24px;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent)}
    .about-body p{color:var(--muted);line-height:1.8;font-size:15px;margin-bottom:18px}
    .tabs{display:flex;margin:28px 0 20px;border-bottom:1px solid var(--border)}
    .tab-btn{font-family:'Space Mono',monospace;font-size:11px;letter-spacing:.1em;color:var(--muted);background:none;border:none;cursor:pointer;padding:10px 20px 10px 0;margin-right:8px;text-transform:uppercase;position:relative;transition:color .3s}
    .tab-btn::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s}
    .tab-btn.active{color:var(--accent)}
    .tab-btn.active::after{transform:scaleX(1)}
    .tab-panel{display:none}
    .tab-panel.active{display:block}
    .tab-panel ul{list-style:none;display:flex;flex-direction:column;gap:14px}
    .tab-panel li{padding-left:16px;border-left:2px solid rgba(0,229,255,0.3)}
    .tab-panel li strong{color:var(--accent);font-size:13px;font-family:'Space Mono',monospace;display:block;margin-bottom:2px}
    .tab-panel li span{color:var(--muted);font-size:14px}
    #skills{background:var(--bg)}
    .skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
    .skill-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:36px 32px;transition:all .4s;position:relative;overflow:hidden}
    .skill-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent3));transform:scaleX(0);transform-origin:left;transition:transform .4s}
    .skill-card:hover{border-color:rgba(0,229,255,0.3);transform:translateY(-4px);box-shadow:var(--glow)}
    .skill-card:hover::before{transform:scaleX(1)}
    .skill-icon{font-size:36px;color:var(--accent);margin-bottom:20px}
    .skill-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
    .skill-card p{color:var(--muted);font-size:14px;line-height:1.7}
    #experience{background:var(--surface)}
    .timeline{position:relative;padding-left:32px}
    .timeline::before{content:'';position:absolute;left:0;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,var(--accent),var(--accent3),transparent)}
    .timeline-item{position:relative;margin-bottom:56px}
    .timeline-dot{position:absolute;left:-38px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(0,229,255,0.5)}
    .tl-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
    .tl-company{font-family:'Space Mono',monospace;font-size:11px;color:var(--accent);letter-spacing:.1em;text-transform:uppercase}
    .tl-date{font-size:12px;color:var(--muted);background:rgba(255,255,255,0.05);padding:3px 10px;border-radius:4px}
    .tl-title{font-size:20px;font-weight:700;margin-bottom:10px}
    .tl-items{display:flex;flex-direction:column;gap:8px;margin-top:12px}
    .tl-item{display:flex;align-items:flex-start;gap:10px;color:var(--muted);font-size:14px;line-height:1.6}
    .tl-item::before{content:'\25B8';color:var(--accent);flex-shrink:0;margin-top:1px}
    #projects{background:var(--bg)}
    .projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:28px}
    .project-card{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:all .4s;position:relative}
    .project-card:hover{border-color:rgba(0,229,255,0.3);transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,0.5),var(--glow)}
    .project-img{width:100%;height:200px;object-fit:cover;display:block;transition:transform .5s}
    .project-card:hover .project-img{transform:scale(1.04)}
    .project-overlay{position:absolute;top:0;left:0;right:0;height:200px;background:linear-gradient(180deg,transparent 30%,rgba(6,7,13,0.9) 100%);pointer-events:none}
    .project-emoji{height:200px;background:linear-gradient(135deg,#0e1019,#1a2035);display:flex;align-items:center;justify-content:center;font-size:56px}
    .project-body{padding:24px}
    .project-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
    .tag{font-size:11px;font-family:'Space Mono',monospace;background:rgba(0,229,255,0.08);color:var(--accent);border:1px solid rgba(0,229,255,0.2);border-radius:4px;padding:3px 10px}
    .project-body h3{font-size:18px;font-weight:700;margin-bottom:8px}
    .project-body p{color:var(--muted);font-size:14px;line-height:1.6}
    #contact{background:var(--surface)}
    .contact-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:80px;align-items:start}
    .contact-info h3{font-size:22px;margin-bottom:28px}
    .contact-item{display:flex;align-items:center;gap:14px;margin-bottom:20px;color:var(--muted);font-size:15px}
    .contact-item i{color:var(--accent);width:20px}
    .social-row{display:flex;gap:16px;margin-top:32px}
    .social-btn{width:44px;height:44px;border-radius:8px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:18px;text-decoration:none;transition:all .3s}
    .social-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-3px)}
    .contact-form{display:flex;flex-direction:column;gap:16px}
    .contact-form input,.contact-form textarea{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:14px 18px;color:var(--text);font-size:15px;font-family:'DM Sans',sans-serif;outline:none;transition:border-color .3s}
    .contact-form input:focus,.contact-form textarea:focus{border-color:var(--accent)}
    .contact-form textarea{resize:vertical;min-height:140px}
    .contact-form button{background:var(--accent);color:#06070d;border:none;border-radius:8px;padding:14px 32px;font-size:15px;font-weight:700;cursor:pointer;transition:all .3s;font-family:'DM Sans',sans-serif}
    .contact-form button:hover{background:#fff;box-shadow:0 0 30px rgba(0,229,255,0.4)}
    #form-msg{color:#61b752;font-size:14px}
    footer{text-align:center;padding:28px 6%;background:var(--bg);border-top:1px solid var(--border);color:var(--muted);font-size:13px}
    footer span{color:var(--accent2)}
    @media(max-width:900px){.about-grid,.contact-grid{grid-template-columns:1fr;gap:48px}.hero-stats{gap:28px}.nav-links{display:none}.nav-burger{display:block}}
    @media(max-width:600px){section{padding:70px 5%}.hero-stats{flex-wrap:wrap;gap:20px}}
    .reveal{opacity:0;transform:translateY(28px);transition:opacity .6s,transform .6s}
    .reveal.visible{opacity:1;transform:none}

.project-links {
  display: flex;
  align-items: center;
  margin-top: 15px;
}

.project-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: 0.3s;
}

.project-links a:hover {
  text-decoration: underline;
}

.btn-demo {
  margin-left: 15px;
  background: rgba(0,229,255,0.08);
  padding: 5px 12px;
  border-radius: 6px;
  border: 1px solid rgba(0,229,255,0.2) !important;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-demo:hover {
  background: var(--accent);
  color: #06070d !important;
}