@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600&family=Inter:wght@300;400;500&display=swap');
:root,html[data-theme="dark"]{
--bg:#0a0a0f;--surface:#141419;--surface-el:#1a1a22;--surface-glass:rgba(20,20,25,0.72);
--text:#f5f0eb;--text-sec:#8a8494;--text-dim:#5a5468;
--accent:#c9a87c;--accent-glow:#e8c9a0;--accent2:#b8739e;
--grad:linear-gradient(135deg,#c9a87c,#b8739e);--grad-bg:linear-gradient(135deg,#1a1a22,#0f0f16);
--glass-border:rgba(201,168,124,0.12);--glass-border2:rgba(201,168,124,0.06);
--radius:24px;--radius-sm:14px;--radius-full:999px;
--shadow:0 20px 60px rgba(0,0,0,0.4);--glow:0 0 40px rgba(201,168,124,0.15);
--transition:0.35s cubic-bezier(0.4,0,0.2,1);
--nav-scroll-bg:rgba(10,10,15,0.85);
--mobile-nav-bg:rgba(10,10,15,0.97);
}
html[data-theme="light"]{
--bg:#faf7f4;--surface:#ffffff;--surface-el:#f5f0eb;--surface-glass:rgba(255,255,255,0.78);
--text:#2a2024;--text-sec:#6b5e68;--text-dim:#9a8e94;
--accent:#a07850;--accent-glow:#c9a87c;--accent2:#9b6088;
--grad:linear-gradient(135deg,#a07850,#9b6088);--grad-bg:linear-gradient(135deg,#f5f0eb,#faf7f4);
--glass-border:rgba(160,120,80,0.15);--glass-border2:rgba(160,120,80,0.08);
--shadow:0 20px 60px rgba(42,32,36,0.08);--glow:0 0 40px rgba(160,120,80,0.12);
--nav-scroll-bg:rgba(250,247,244,0.88);
--mobile-nav-bg:rgba(250,247,244,0.97);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden;min-height:100vh;}
h1,h2,h3,h4,h5,h6{font-family:'Sora',sans-serif;line-height:1.15;font-weight:400;}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
button,input,textarea,select{font:inherit;border:none;outline:none;background:none;color:inherit;}
img{max-width:100%;display:block;}
.container{width:min(1200px,calc(100% - 48px));margin:0 auto;}

/* ===== NAVIGATION ===== */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:20px 0;transition:background var(--transition),backdrop-filter var(--transition);}
.site-nav.scrolled{background:var(--nav-scroll-bg);backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border2);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:min(1200px,calc(100% - 48px));margin:0 auto;}
.nav-brand{display:flex;flex-direction:column;gap:2px;}
.nav-brand-name{font-family:'Sora',sans-serif;font-weight:600;font-size:1.05rem;letter-spacing:0.04em;text-transform:lowercase;color:var(--text);}
.nav-brand-role{font-size:0.75rem;color:var(--text-sec);letter-spacing:0.04em;}
.nav-links{display:flex;gap:32px;list-style:none;}
.nav-links a{font-size:0.9rem;color:var(--text-sec);position:relative;padding:4px 0;letter-spacing:0.02em;}
.nav-links a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--grad);border-radius:2px;transition:width var(--transition);}
.nav-links a:hover,.nav-links a.active{color:var(--text);}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.nav-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;z-index:110;}
.nav-hamburger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition);}
.nav-right{display:flex;align-items:center;gap:12px;}
.theme-toggle{width:38px;height:38px;border-radius:50%;border:1px solid var(--glass-border);background:var(--surface-glass);backdrop-filter:blur(8px);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition);font-size:1rem;}
.theme-toggle:hover{border-color:var(--accent);transform:scale(1.08);}
.moon-icon{width:18px;height:18px;border-radius:50%;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);background:transparent;}
html[data-theme="dark"] .moon-icon{box-shadow:inset -6px -4px 0 0 var(--text);transform:rotate(-20deg);}
html[data-theme="light"] .moon-icon{box-shadow:inset -18px -18px 0 0 var(--text);transform:rotate(90deg);}

/* ===== HERO ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding:120px 0 80px;overflow:hidden;}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.4;animation:orbFloat 20s ease-in-out infinite;}
html[data-theme="light"] .hero-orb{opacity:0.25;}
.hero-orb-1{width:500px;height:500px;background:radial-gradient(circle,rgba(201,168,124,0.3),transparent);top:-10%;right:-5%;animation-delay:0s;}
.hero-orb-2{width:400px;height:400px;background:radial-gradient(circle,rgba(184,115,158,0.25),transparent);bottom:-5%;left:-8%;animation-delay:-7s;}
.hero-orb-3{width:300px;height:300px;background:radial-gradient(circle,rgba(201,168,124,0.15),transparent);top:40%;left:30%;animation-delay:-14s;}
.hero-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:60px;align-items:center;}
/* Editorial Hero Typography */
.editorial-title{font-size:clamp(2rem,3.5vw,3.2rem);font-weight:400;letter-spacing:-0.01em;margin-bottom:16px;color:var(--text);font-family:'Sora',sans-serif;}
.editorial-subtitle{font-size:0.95rem;font-weight:400;color:var(--text-sec);letter-spacing:0.1em;text-transform:uppercase;margin-bottom:24px;display:flex;align-items:center;gap:12px;font-family:'Inter',sans-serif;}
.editorial-subtitle .dot{width:4px;height:4px;border-radius:50%;background:var(--accent);display:inline-block;opacity:0.6;}
.editorial-text{font-size:1.05rem;line-height:1.8;color:var(--text-sec);font-weight:400;max-width:520px;margin-bottom:48px;font-family:'Inter',sans-serif;}

.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center;}
/* Hero visual — WebGL Container */
.hero-visual{position:relative;z-index:2;width:100%;aspect-ratio:1;max-width:420px;justify-self:center;display:flex;align-items:center;justify-content:center;overflow:visible;}
#three-hero-container{width:100%;height:100%;}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-full);font-weight:400;font-size:0.9rem;letter-spacing:0.04em;cursor:pointer;transition:all var(--transition);position:relative;overflow:hidden;font-family:'Inter',sans-serif;}
.btn-primary{background:var(--grad);color:#0a0a0f;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow);}
.btn-secondary{border:1px solid var(--glass-border);background:var(--surface-glass);backdrop-filter:blur(12px);color:var(--text);}
.btn-secondary:hover{border-color:var(--accent);background:rgba(201,168,124,0.08);transform:translateY(-2px);}
.btn-ghost{background:transparent;border:1px solid transparent;color:var(--text-sec);}
.btn-ghost:hover{color:var(--text);border-color:var(--glass-border);background:var(--surface-glass);}
.btn-sm{padding:10px 20px;font-size:0.82rem;}

/* ===== CUSTOM CURSOR ===== */
* { cursor: none; }
#custom-cursor { position: fixed; top: 0; left: 0; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; pointer-events: none; z-index: 9999; transform: translate(-50%, -50%); transition: width 0.2s, height 0.2s, background 0.2s; }
#custom-cursor-follower { position: fixed; top: 0; left: 0; width: 32px; height: 32px; border: 1px solid rgba(201,168,124,0.4); border-radius: 50%; pointer-events: none; z-index: 9998; transform: translate(-50%, -50%); transition: width 0.2s, height 0.2s, border-color 0.2s; }
body:hover #custom-cursor-follower { width: 32px; height: 32px; }
a:hover ~ #custom-cursor, button:hover ~ #custom-cursor, .btn:hover ~ #custom-cursor { transform: translate(-50%, -50%) scale(1.5); background: transparent; border: 1px solid var(--accent); }
a:hover ~ #custom-cursor-follower, button:hover ~ #custom-cursor-follower, .btn:hover ~ #custom-cursor-follower { width: 48px; height: 48px; border-color: var(--accent); background: rgba(201,168,124,0.1); }

/* ===== GLASS CARDS ===== */
.glass-card{background:var(--surface-glass);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius);padding:32px;transition:all var(--transition);position:relative;}
.glass-card::before{content:'';position:absolute;inset:0;border-radius:var(--radius);background:linear-gradient(135deg,rgba(201,168,124,0.05),transparent 50%);pointer-events:none;opacity:0;transition:opacity var(--transition);}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(201,168,124,0.2);box-shadow:var(--glow);}
.glass-card:hover::before{opacity:1;}

/* ===== SECTION LAYOUTS ===== */
.page-section{padding:100px 0;position:relative;}
.section-header{margin-bottom:60px;}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:0.78rem;color:var(--accent);letter-spacing:0.16em;text-transform:uppercase;font-weight:600;margin-bottom:16px;}
.section-eyebrow::before{content:'';width:24px;height:1px;background:var(--accent);}
.section-title{font-size:clamp(2rem,3.5vw,3.2rem);max-width:700px;letter-spacing:-0.01em;}
.section-subtitle{color:var(--text-sec);font-size:1.05rem;max-width:600px;margin-top:16px;line-height:1.8;}

/* ===== PROJECT CARDS ===== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:28px;}
.project-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.project-card-header{padding:32px 32px 20px;border-bottom:1px solid var(--glass-border2);}
.project-category{font-size:0.75rem;color:var(--accent);text-transform:uppercase;letter-spacing:0.14em;font-weight:600;}
.project-card h3{font-size:1.5rem;margin:12px 0 6px;}
.project-tagline{color:var(--text-sec);font-size:0.9rem;}
.project-card-body{padding:24px 32px;flex:1;}
.project-card-body p{color:var(--text-sec);font-size:0.9rem;line-height:1.7;}
.project-highlights{list-style:none;margin-top:16px;}
.project-highlights li{position:relative;padding-left:20px;color:var(--text-sec);font-size:0.85rem;margin-bottom:8px;}
.project-highlights li::before{content:'';position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--accent);}
.project-card-footer{padding:20px 32px;border-top:1px solid var(--glass-border2);display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;}
.tech-tag{padding:4px 12px;border-radius:var(--radius-full);font-size:0.72rem;border:1px solid var(--glass-border);color:var(--text-sec);background:rgba(201,168,124,0.04);}
.project-link{color:var(--accent);font-weight:600;font-size:0.85rem;display:inline-flex;align-items:center;gap:6px;}
.project-link:hover{color:var(--accent-glow);}

/* ===== SKILLS ===== */
.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px;}
.skill-category{padding:32px;}
.skill-category-icon{width:48px;height:48px;border-radius:14px;background:rgba(201,168,124,0.1);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.2rem;}
.skill-category h3{font-size:1.15rem;margin-bottom:20px;}
.skill-item{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--glass-border2);}
.skill-item:last-child{border:none;}
.skill-name{font-size:0.9rem;color:var(--text);}
.skill-level{font-size:0.72rem;padding:3px 10px;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:0.08em;font-weight:600;}
.skill-level.advanced{color:#c9a87c;background:rgba(201,168,124,0.12);border:1px solid rgba(201,168,124,0.2);}
.skill-level.intermediate{color:#b8739e;background:rgba(184,115,158,0.12);border:1px solid rgba(184,115,158,0.2);}
.skill-level.beginner,.skill-level.learning{color:var(--text-sec);background:rgba(138,132,148,0.1);border:1px solid rgba(138,132,148,0.2);}

/* ===== TIMELINE ===== */
.timeline{position:relative;padding-left:40px;}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:1px;background:linear-gradient(to bottom,var(--accent),var(--accent2),transparent);}
.timeline-item{position:relative;margin-bottom:48px;}
.timeline-item:last-child{margin-bottom:0;}
.timeline-dot{position:absolute;left:-33px;top:8px;width:12px;height:12px;border-radius:50%;border:2px solid var(--accent);background:var(--bg);z-index:2;}
.timeline-item:hover .timeline-dot{background:var(--accent);box-shadow:0 0 20px rgba(201,168,124,0.4);}
.timeline-date{font-size:0.8rem;color:var(--accent);font-weight:600;letter-spacing:0.06em;margin-bottom:8px;}
.timeline-card{padding:28px;}
.timeline-card h3{font-size:1.2rem;margin-bottom:4px;}
.timeline-card .company{color:var(--accent2);font-weight:500;margin-bottom:12px;font-size:0.95rem;}
.timeline-card .location{color:var(--text-dim);font-size:0.82rem;margin-bottom:16px;}
.timeline-card ul{list-style:none;}
.timeline-card ul li{color:var(--text-sec);font-size:0.88rem;line-height:1.7;padding-left:18px;position:relative;margin-bottom:8px;}
.timeline-card ul li::before{content:'→';position:absolute;left:0;color:var(--accent);}
.timeline-tech{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px;}

/* ===== SERVICES ===== */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px;}
.service-card{padding:36px;text-align:left;}
.service-icon{width:56px;height:56px;border-radius:16px;background:rgba(201,168,124,0.08);border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:24px;transition:all var(--transition);}
.service-card:hover .service-icon{background:rgba(201,168,124,0.15);box-shadow:0 0 30px rgba(201,168,124,0.2);}
.service-card h3{font-size:1.2rem;margin-bottom:12px;}
.service-card>p{color:var(--text-sec);font-size:0.9rem;line-height:1.7;margin-bottom:20px;}
.service-list{list-style:none;}
.service-list li{color:var(--text-dim);font-size:0.82rem;padding:5px 0;padding-left:16px;position:relative;}
.service-list li::before{content:'✦';position:absolute;left:0;color:var(--accent);font-size:0.65rem;}

/* ===== ABOUT ===== */
.about-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:40px;align-items:start;}
.about-text p{color:var(--text-sec);font-size:1rem;line-height:1.8;margin-bottom:20px;}
.about-cards{display:grid;gap:20px;}
.about-card{padding:24px;}
.about-card h4{font-size:0.95rem;color:var(--accent);margin-bottom:12px;text-transform:uppercase;letter-spacing:0.08em;}
.about-card p,.about-card li{color:var(--text-sec);font-size:0.88rem;line-height:1.7;}
.cert-grid{display:grid;gap:16px;margin-top:32px;}
.cert-item{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;}
.cert-item h4{font-size:0.9rem;margin-bottom:2px;}
.cert-item .issuer{font-size:0.78rem;color:var(--text-sec);}
.cert-item .date{font-size:0.75rem;color:var(--text-dim);white-space:nowrap;}
.pub-card{padding:32px;border:1px solid rgba(201,168,124,0.2);background:linear-gradient(135deg,rgba(201,168,124,0.06),rgba(184,115,158,0.04));}
.pub-card h3{font-size:1.1rem;margin-bottom:8px;}
.pub-card .conference{color:var(--accent);font-weight:600;font-size:0.9rem;}
.pub-card .venue{color:var(--text-sec);font-size:0.85rem;margin-top:4px;}
.pub-card .pub-date{color:var(--text-dim);font-size:0.8rem;margin-top:8px;}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start;}
.contact-info{display:grid;gap:20px;}
.contact-item{display:flex;align-items:center;gap:16px;padding:20px;}
.contact-item-icon{width:44px;height:44px;border-radius:12px;background:rgba(201,168,124,0.1);display:flex;align-items:center;justify-content:center;color:var(--accent);flex-shrink:0;font-size:1.1rem;}
.contact-item-text h4{font-size:0.85rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.08em;margin-bottom:4px;}
.contact-item-text p{color:var(--text);font-size:0.95rem;}
.contact-item-text a{color:var(--accent);}
.contact-item-text a:hover{color:var(--accent-glow);}
.social-links{display:flex;gap:12px;margin-top:12px;}
.social-link{width:44px;height:44px;border-radius:12px;border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;transition:all var(--transition);color:var(--text-sec);}
.social-link:hover{border-color:var(--accent);color:var(--accent);background:rgba(201,168,124,0.08);transform:translateY(-2px);}
.contact-form{display:grid;gap:16px;}
.form-group{position:relative;}
.form-group label{font-size:0.8rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.08em;margin-bottom:6px;display:block;}
.form-group input,.form-group textarea{width:100%;padding:14px 18px;border-radius:var(--radius-sm);border:1px solid var(--glass-border);background:var(--surface);color:var(--text);font-size:0.92rem;transition:border-color var(--transition);}
.form-group input:focus,.form-group textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(201,168,124,0.1);}
.form-group textarea{min-height:140px;resize:vertical;}
.form-status{padding:12px 18px;border-radius:var(--radius-sm);font-size:0.88rem;display:none;}
.form-status.success{display:block;background:rgba(100,200,120,0.1);border:1px solid rgba(100,200,120,0.2);color:#8fd4a0;}
.form-status.error{display:block;background:rgba(200,100,100,0.1);border:1px solid rgba(200,100,100,0.2);color:#d49090;}

/* ===== FOOTER ===== */
.site-footer{border-top:1px solid var(--glass-border2);padding:40px 0;text-align:center;}
.footer-brand{font-family:'Outfit',sans-serif;font-weight:700;font-size:1rem;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px;}
.footer-copy{color:var(--text-dim);font-size:0.82rem;}
.footer-links{display:flex;justify-content:center;gap:24px;margin-top:16px;}
.footer-links a{color:var(--text-sec);font-size:0.85rem;}
.footer-links a:hover{color:var(--accent);}

/* ===== PARTICLE CANVAS ===== */
#particle-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;}

/* ===== SCROLL ANIMATIONS ===== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity 0.8s ease,transform 0.8s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}
.reveal-delay-1{transition-delay:0.1s;}
.reveal-delay-2{transition-delay:0.2s;}
.reveal-delay-3{transition-delay:0.3s;}
.reveal-delay-4{transition-delay:0.4s;}

/* ===== PAGE TRANSITION ===== */
.page-transition{position:fixed;inset:0;background:var(--bg);z-index:9999;opacity:0;pointer-events:none;transition:opacity 0.4s ease;}
.page-transition.active{opacity:1;pointer-events:all;}

/* ===== ANIMATIONS ===== */
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1);}33%{transform:translate(30px,-20px) scale(1.05);}66%{transform:translate(-20px,15px) scale(0.95);}  }
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:0.5;transform:scale(0.8);}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:translateY(0);}}
@keyframes shimmer{0%{background-position:-200% 0;}100%{background-position:200% 0;}}
.animate-in{animation:fadeInUp 0.7s ease forwards;}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .about-grid,.contact-grid{grid-template-columns:1fr;}
  .hero h1{font-size:clamp(2.2rem,4.5vw,3.5rem);}
  .projects-grid{grid-template-columns:1fr;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{max-width:380px;margin-top:20px;}
}
@media(max-width:768px){
  .nav-links{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:var(--mobile-nav-bg);backdrop-filter:blur(20px);flex-direction:column;align-items:center;justify-content:center;gap:28px;z-index:105;}
  .nav-links.open{display:flex;}
  .nav-hamburger{display:flex;}
  .hero{padding:100px 0 60px;min-height:auto;}
  .page-section{padding:60px 0;}
  .section-title{font-size:1.8rem;}
  .container{width:calc(100% - 32px);}
  .timeline{padding-left:32px;}
  .services-grid,.skills-grid{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .hero-visual{max-width:300px;}
  .hero-float-badge{font-size:0.7rem;padding:6px 12px;}
}
@media(max-width:480px){
  .hero h1{font-size:2rem;}
  .glass-card{padding:20px;}
}