/* ===================== TOKENS ===================== */
:root{
  --bg:#0B0E14;
  --bg-soft:#0F1420;
  --surface:#141a26;
  --surface-2:#1a2130;
  --border:#242c3d;
  --text:#E7E9EE;
  --text-muted:#8B93A7;
  --accent:#7C6FF0;
  --accent-soft:rgba(124,111,240,0.14);
  --accent-2:#F2B84B;
  --accent-2-soft:rgba(242,184,75,0.14);
  --accent-3:#4FD1C5;
  --shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
  --radius: 14px;
  --maxw: 1120px;
  --font-display: 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}
html[data-theme="light"]{
  --bg:#F4F5F9;
  --bg-soft:#EBEDF4;
  --surface:#FFFFFF;
  --surface-2:#F0F1F7;
  --border:#DFE2EC;
  --text:#171B26;
  --text-muted:#5B6273;
  --accent:#5D4FDB;
  --accent-soft:rgba(93,79,219,0.10);
  --accent-2:#B9791A;
  --accent-2-soft:rgba(185,121,26,0.12);
  --accent-3:#0E9488;
  --shadow: 0 20px 50px -25px rgba(30,34,60,0.25);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .4s ease, color .4s ease;
}
::selection{background:var(--accent);color:#fff;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
img{max-width:100%;display:block;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
section{position:relative;padding:120px 0;}
.eyebrow{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.06em;
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{content:'';width:22px;height:1px;background:var(--accent);display:inline-block;}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(28px,4vw,42px);
  font-weight:700;
  letter-spacing:-0.02em;
  margin-bottom:14px;
}
.section-sub{color:var(--text-muted);max-width:560px;margin-bottom:56px;font-size:15.5px;}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; scroll-behavior:auto !important;}
}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ===================== NAV ===================== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 0;
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 28px;
  display:flex;align-items:center;justify-content:space-between;
  background:rgba(20,26,38,0.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--border);
  border-radius:16px;
  padding:12px 20px;
  transition:background .4s ease,border-color .4s ease;
}
html[data-theme="light"] .nav-inner{background:rgba(255,255,255,0.6);}
.logo{
  font-family:var(--font-mono);font-weight:600;font-size:17px;
  display:flex;align-items:center;gap:8px;
}
.logo .dot{width:8px;height:8px;border-radius:50%;background:var(--accent-3);box-shadow:0 0 10px var(--accent-3);}
.nav-links{display:flex;gap:28px;align-items:center;}
.nav-links a{
  font-size:14px;color:var(--text-muted);font-weight:500;
  position:relative;padding:4px 0;transition:color .25s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a::after{
  content:'';position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--accent);
  transition:width .25s ease;
}
.nav-links a:hover::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.theme-toggle{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);color:var(--text);display:flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:14px;transition:all .25s ease;
}
.theme-toggle:hover{border-color:var(--accent);color:var(--accent);}
.btn{
  font-family:var(--font-body);font-weight:600;font-size:14px;
  padding:10px 18px;border-radius:10px;border:1px solid transparent;
  cursor:pointer;display:inline-flex;align-items:center;gap:8px;
  transition:transform .2s ease, box-shadow .2s ease, background .25s ease, border-color .25s ease;
}
.btn:active{transform:scale(0.97);}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{box-shadow:0 10px 30px -8px var(--accent);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.nav-cta{display:none;}
@media(min-width:900px){.nav-cta{display:inline-flex;}}
.hamburger{
  display:flex;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;color:var(--text);
}
@media(min-width:900px){.hamburger{display:none;} .nav-links{display:flex;}}
@media(max-width:899px){
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    background:var(--surface);border:1px solid var(--border);border-radius:14px;
    flex-direction:column;padding:18px;gap:16px;align-items:flex-start;
    display:none;
  }
  .nav-links.open{display:flex;}
}

/* ===================== HERO ===================== */
.hero{
  min-height:100vh;
  display:flex;align-items:center;
  padding-top:120px;padding-bottom:80px;
  position:relative;
}
#particles{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:0.6;}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.1fr 0.9fr;gap:60px;align-items:center;
}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;}}
.hero-kicker{
  font-family:var(--font-mono);color:var(--accent-3);font-size:13.5px;
  display:flex;align-items:center;gap:10px;margin-bottom:22px;
}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-3);position:relative;}
.pulse-dot::after{
  content:'';position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--accent-3);
  animation:pulse 2s infinite;
}
@keyframes pulse{0%{transform:scale(0.6);opacity:1;}100%{transform:scale(1.8);opacity:0;}}
.hero h1{
  font-family:var(--font-display);
  font-size:clamp(38px,6vw,64px);
  font-weight:700;letter-spacing:-0.03em;line-height:1.05;margin-bottom:18px;
}
.hero h1 span{color:var(--accent);}
.type-line{
  font-family:var(--font-mono);
  font-size:clamp(16px,2.2vw,20px);
  color:var(--text-muted);
  margin-bottom:28px;
  min-height:28px;
}
.type-line .cursor{color:var(--accent);animation:blink 1s step-end infinite;}
@keyframes blink{50%{opacity:0;}}
.hero p.lead{color:var(--text-muted);max-width:520px;margin-bottom:34px;font-size:16px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px;}
.hero-socials{display:flex;gap:14px;}
.social-btn{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);display:flex;align-items:center;justify-content:center;
  transition:all .25s ease;font-size:16px;
}
.social-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-3px);}

.hero-right{display:flex;flex-direction:column;gap:26px;align-items:center;}
.hero-photo{
  width:100%;max-width:320px;aspect-ratio:1/1;border-radius:28px;
  background:linear-gradient(135deg,var(--accent),var(--accent-3));
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);
  font-family:var(--font-display);font-size:72px;font-weight:800;color:#fff;
}
.hero-photo img{width:100%;height:100%;object-fit:cover;border-radius:28px;}
@media(max-width:900px){.hero-photo{max-width:220px;}}

/* terminal card */
.terminal{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--shadow);
  overflow:hidden;
  font-family:var(--font-mono);
  
}
.terminal-bar{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;border-bottom:1px solid var(--border);
  background:var(--surface-2);
}
.terminal-dot{width:11px;height:11px;border-radius:50%;}
.t-red{background:#FF5F57;} .t-yellow{background:#FEBC2E;} .t-green{background:#28C840;}
.terminal-title{margin-left:10px;font-size:12px;color:var(--text-muted);}
.terminal-body{padding:20px;font-size:13.5px;color:var(--text);min-height:230px;}
.terminal-body .line{margin-bottom:10px;color:var(--text-muted);}
.terminal-body .prompt{color:var(--accent-3);}
.terminal-body .cmd{color:var(--text);}
.terminal-body .out{color:var(--accent-2);}
.terminal-body .out2{color:var(--accent);}

/* ===================== ABOUT ===================== */
.about-grid{display:grid;grid-template-columns:0.8fr 1.2fr;gap:60px;align-items:start;}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;}}
.avatar-card{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;
  padding:32px;text-align:center;
}
.avatar-mono{
  width:180px;height:180px;border-radius:50%;margin:0 auto 20px;
  background:linear-gradient(135deg,var(--accent),var(--accent-3));
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:52px;font-weight:700;color:#fff;
  overflow:hidden;
}
.avatar-mono img{
  width:100%;height:100%;object-fit:cover;border-radius:50%;
}
.avatar-card h3{font-family:var(--font-display);font-size:20px;margin-bottom:4px;}
.avatar-card p{color:var(--text-muted);font-size:13.5px;}
.avatar-meta{margin-top:22px;text-align:left;border-top:1px solid var(--border);padding-top:18px;}
.avatar-meta li{
  display:flex;justify-content:space-between;font-size:13px;padding:6px 0;color:var(--text-muted);
}
.avatar-meta li b{color:var(--text);font-weight:500;}
.about-copy p{color:var(--text-muted);margin-bottom:18px;font-size:15.5px;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px;}
.stat-box{
  background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px;text-align:center;
}
.stat-box .num{font-family:var(--font-display);font-size:28px;font-weight:700;color:var(--accent);}
.stat-box .lbl{font-size:12.5px;color:var(--text-muted);margin-top:4px;}

/* ===================== SKILLS ===================== */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media(max-width:860px){.skills-grid{grid-template-columns:1fr;}}
.skill-card{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:26px;
}
.skill-card h4{
  font-family:var(--font-mono);font-size:13px;color:var(--accent-3);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:20px;
}
.skill-item{margin-bottom:16px;}
.skill-item:last-child{margin-bottom:0;}
.skill-top{display:flex;justify-content:space-between;font-size:13.5px;margin-bottom:6px;}
.skill-top span:last-child{color:var(--text-muted);font-family:var(--font-mono);font-size:12px;}
.bar-track{height:6px;background:var(--surface-2);border-radius:6px;overflow:hidden;}
.bar-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,var(--accent),var(--accent-3));width:0%;transition:width 1.2s cubic-bezier(.2,.7,.2,1);}

/* ===================== TIMELINE (experience + education) ===================== */
.timeline{position:relative;padding-left:34px;}
.timeline::before{content:'';position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:var(--border);}
.tl-item{position:relative;padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{position:absolute;left:-34px;top:4px;width:13px;height:13px;border-radius:50%;background:var(--bg);border:2px solid var(--accent);}
.tl-date{font-family:var(--font-mono);font-size:12.5px;color:var(--accent-2);margin-bottom:6px;display:block;}
.tl-card{
  background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px 26px;
}
.tl-card h3{font-family:var(--font-display);font-size:19px;margin-bottom:4px;}
.tl-card .org{color:var(--text-muted);font-size:13.5px;margin-bottom:14px;}
.tl-card ul{padding-left:18px;}
.tl-card ul li{list-style:disc;color:var(--text-muted);font-size:14.5px;margin-bottom:8px;}
.tl-card .cgpa{
  display:inline-block;margin-top:10px;font-family:var(--font-mono);font-size:12px;
  background:var(--accent-soft);color:var(--accent);padding:4px 10px;border-radius:8px;
}
/* Project Cards */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.project-card { overflow: hidden; transition: var(--transition); }
.project-card:hover { transform: translateY(-10px); }
.project-card img { width: 100%; height: 220px; object-fit: cover; }
.project-info { padding: 25px; }
.proj-tag { 
    background: var(--primary-color); color: white; padding: 4px 12px; 
    border-radius: 15px; font-size: 12px; font-weight: 600; 
}
.project-info h3 { margin: 15px 0 10px; }
.proj-tech { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.proj-tech span { 
    font-size: 12px; padding: 5px 10px; border: 1px solid var(--primary-color); 
    border-radius: 5px; color: var(--primary-color);
}

/* ===================== PROJECTS ===================== */
.projects-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
@media(max-width:860px){.projects-grid{grid-template-columns:1fr;}}
.proj-card{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;
  transition:transform .3s ease, border-color .3s ease;
}
.proj-card:hover{transform:translateY(-6px);border-color:var(--accent);}
.proj-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px;}
.proj-icon{
  width:42px;height:42px;border-radius:10px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.proj-card h3{font-family:var(--font-display);font-size:20px;margin:14px 0 10px;}
.proj-card p.role{color:var(--text-muted);font-size:14px;margin-bottom:14px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.tag{
  font-family:var(--font-mono);font-size:11.5px;padding:5px 10px;border-radius:7px;
  background:var(--surface-2);color:var(--text-muted);border:1px solid var(--border);
}
.proj-card ul{padding-left:18px;}
.proj-card ul li{font-size:14px;color:var(--text-muted);list-style:disc;margin-bottom:7px;}

/* ===================== ACHIEVEMENTS ===================== */
.ach-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media(max-width:860px){.ach-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.ach-grid{grid-template-columns:1fr;}}
.ach-card{
  background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:22px;
  display:flex;gap:14px;align-items:flex-start;
}
.ach-icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:9px;background:var(--accent-2-soft);color:var(--accent-2);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.ach-card p{font-size:14px;color:var(--text-muted);}

/* ===================== CERTIFICATES ===================== */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media(max-width:860px){.cert-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.cert-grid{grid-template-columns:1fr;}}
.cert-card{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;
  cursor:pointer;transition:transform .3s ease, border-color .3s ease;
}
.cert-card:hover{transform:translateY(-6px);border-color:var(--accent);}
.cert-thumb{
  width:100%;aspect-ratio:4/3;background:var(--surface-2);position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.cert-thumb img{width:100%;height:100%;object-fit:cover;}
.cert-thumb .cert-fallback{
  display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--text-muted);
  font-size:12.5px;font-family:var(--font-mono);text-align:center;padding:16px;
}
.cert-thumb .cert-fallback i{font-size:26px;color:var(--accent);}
.cert-zoom{
  position:absolute;top:10px;right:10px;width:32px;height:32px;border-radius:8px;
  background:rgba(0,0,0,0.5);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:13px;opacity:0;transition:opacity .25s ease;
}
.cert-card:hover .cert-zoom{opacity:1;}
.cert-info{padding:16px 18px;}
.cert-info h4{font-size:14.5px;margin-bottom:3px;}
.cert-info p{font-size:12.5px;color:var(--text-muted);font-family:var(--font-mono);}

.lightbox{
  position:fixed;inset:0;background:rgba(6,8,14,0.88);
  z-index:2000;display:none;align-items:center;justify-content:center;padding:40px;
}
.lightbox.open{display:flex;}
.lightbox-inner{max-width:900px;width:100%;text-align:center;}
.lightbox-inner img{max-width:100%;max-height:74vh;border-radius:12px;box-shadow:0 30px 80px -20px rgba(0,0,0,0.7);}
.lightbox-caption{color:#E7E9EE;font-family:var(--font-mono);font-size:13.5px;margin-top:16px;}
.lightbox-close{
  position:absolute;top:26px;right:30px;width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.2);color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;
}
.lightbox-close:hover{background:rgba(255,255,255,0.16);}

/* ===================== CONTACT ===================== */
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:50px;}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;}}
.contact-info-item{
  display:flex;gap:16px;align-items:flex-start;margin-bottom:24px;
}
.contact-icon{
  width:44px;height:44px;border-radius:11px;background:var(--surface);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--accent);flex:0 0 44px;
}
.contact-info-item h4{font-size:14.5px;margin-bottom:3px;}
.contact-info-item p, .contact-info-item a{color:var(--text-muted);font-size:14px;}
.form-card{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:32px;
}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13px;margin-bottom:7px;color:var(--text-muted);font-family:var(--font-mono);}
.form-row input, .form-row textarea{
  width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;
  padding:12px 14px;color:var(--text);font-family:var(--font-body);font-size:14.5px;
  transition:border-color .25s ease;
}
.form-row input:focus, .form-row textarea:focus{outline:none;border-color:var(--accent);}
.form-row textarea{resize:vertical;min-height:110px;}
.form-status{font-size:13px;margin-top:6px;color:var(--accent-3);min-height:18px;}

footer{
  border-top:1px solid var(--border);padding:36px 0;text-align:center;
  color:var(--text-muted);font-size:13.5px;
}
footer .foot-links{display:flex;justify-content:center;gap:20px;margin-top:14px;}
footer a:hover{color:var(--accent);}

.back-top{
  position:fixed;bottom:26px;right:26px;width:46px;height:46px;border-radius:50%;
  background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);cursor:pointer;z-index:900;opacity:0;pointer-events:none;
  transition:opacity .3s ease, transform .3s ease;
}
.back-top.show{opacity:1;pointer-events:auto;}
.back-top:hover{transform:translateY(-4px);}