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

:root{
  --bg:#ffffff;
  --text:#111418;
  --muted:#687076;
  --accent:#2563eb;
  --ring:#2f6feb;
  --line:#e6e8eb;
  --pill:#f6f8fa;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --shadow: 0 10px 40px rgba(0,0,0,0.1);
}

/* Base */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.6;
  -webkit-overflow-scrolling:touch;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
p{margin:0 0 1em 0}

/* Touch device optimizations */
button, .pill, .icon-btn, .scroll-btn, .indicator{
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
}

/* Layout */
.container{width:min(1200px,92vw);margin:0 auto;padding:48px 24px}
.hero{display:flex;align-items:center;justify-content:center;min-height:100vh;text-align:center;position:relative}
.stack{display:flex;flex-direction:column;align-items:center;gap:32px}

/* Fixed Navigation */
.nav-fixed{
  position:fixed;top:20px;left:50%;transform:translateX(-50%);
  z-index:1000;backdrop-filter:blur(10px);
  background:rgba(255,255,255,0.95);border-radius:50px;
  padding:8px;box-shadow:var(--shadow);
  transition:all 0.3s ease;
}
.pill-nav{
  display:flex;gap:8px;flex-wrap:wrap;justify-content:center
}
.pill{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:25px;
  background:transparent;border:none;
  font-weight:500;letter-spacing:.1em;font-size:.85rem;
  color:var(--text);text-transform:capitalize;
  transition:all .3s ease;cursor:pointer;
}
.pill:hover, .pill.active{
  background:var(--accent);color:#fff;
  transform:translateY(-1px);
}

/* Hero Enhancements */
.hero-bg{
  position:absolute;top:0;left:0;right:0;bottom:0;
  background:var(--gradient);opacity:0.02;z-index:-1;
}
.avatar{
  width:180px;height:180px;border-radius:50%;object-fit:cover;
  filter:drop-shadow(0 12px 32px rgba(0,0,0,.15));
  border:8px solid #fff;
  transition:transform 0.3s ease;
}
.avatar:hover{transform:scale(1.05)}

/* Typography */
.name{
  font-size:clamp(32px,5vw,48px);font-weight:700;letter-spacing:.02em;
  margin:0;background:var(--gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.subtitle{
  color:var(--muted);
  letter-spacing:.3em;font-size:.9rem;
  line-height:1.4;text-transform:uppercase;
  margin:8px 0 0 0;
}
.intro{
  max-width:600px;color:var(--muted);
  font-size:1.1rem;line-height:1.6;
  margin:16px 0 0 0;text-align:center;
}

/* Socials */
.socials{display:flex;gap:20px;margin-top:24px;flex-wrap:wrap;justify-content:center}
.icon-btn{
  width:50px;height:50px;border-radius:50%;
  border:2px solid var(--line);display:inline-grid;place-items:center;
  background:#fff;transition:all .3s ease;
}
.icon-btn:hover{
  transform:translateY(-3px);
  box-shadow:0 8px 25px rgba(47,111,235,.2);
  border-color:var(--accent);
}
.icon{width:22px;height:22px;display:block}

/* Section Styling */
section{scroll-margin-top:100px;padding:80px 0}
.section{position:relative}
.section-header{text-align:center;margin-bottom:60px}
.section-title{
  font-size:2.5rem;font-weight:700;margin:0 0 16px 0;
  color:var(--text);position:relative;
}
.section-subtitle{
  color:var(--muted);font-size:1.1rem;
  max-width:600px;margin:0 auto;
}

/* About Section */
.about-content{display:block}
.skills-section{width:100%}
.about-text{font-size:1.1rem;line-height:1.7}
.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.skill{
  background:var(--pill);border:1px solid var(--line);
  padding:12px 16px;border-radius:12px;text-align:center;
  font-weight:500;transition:all 0.3s ease;
}
.skill:hover{
  background:var(--accent);color:#fff;
  transform:translateY(-2px);
}

/* Students Feedback Section */
.feedback-content{display:flex;flex-direction:column;gap:60px}

/* Communication Highlights */
.highlights-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px}
.highlight-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:32px;text-align:center;transition:all 0.3s ease;
  box-shadow:0 4px 20px rgba(0,0,0,.05);
}
.highlight-card:hover{
  transform:translateY(-8px);
  box-shadow:0 20px 60px rgba(0,0,0,.1);
  border-color:var(--accent);
}
.highlight-icon{font-size:3rem;margin-bottom:20px}
.highlight-title{
  font-size:1.1rem;font-weight:600;margin:0 0 16px 0;
  color:var(--text);
}
.highlight-desc{
  color:var(--muted);line-height:1.6;margin:0;
  font-size:0.95rem;
}

/* Student Testimonials */
.testimonials-container{position:relative;max-width:100%;overflow:hidden}
.testimonials-scroll{
  display:flex;gap:32px;transition:transform 0.5s ease;
  scroll-behavior:smooth;
}
.testimonial-card{
  background:linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border:1px solid var(--line);border-radius:20px;
  padding:32px;position:relative;transition:all 0.3s ease;
  box-shadow:0 4px 20px rgba(0,0,0,.05);
  flex:0 0 100%;min-width:0;
}
.testimonial-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 40px rgba(0,0,0,.1);
}
.quote-mark{
  position:absolute;top:16px;left:24px;
  font-size:4rem;color:var(--accent);opacity:0.2;
  font-family:Georgia,serif;line-height:1;
}
.testimonial-text{
  margin:20px 0 16px 0;font-style:italic;
  color:var(--text);line-height:1.6;font-size:1.05rem;
}
.testimonial-author{
  color:var(--muted);font-size:0.9rem;font-weight:500;
  display:block;text-align:center;margin:0 60px;
}

/* Scroll Controls */
.scroll-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  background:rgba(255,255,255,0.9);border:1px solid var(--line);
  border-radius:50%;width:50px;height:50px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;color:var(--accent);cursor:pointer;
  transition:all 0.3s ease;z-index:10;
  backdrop-filter:blur(10px);
}
.scroll-btn:hover{
  background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.1);
  transform:translateY(-50%) scale(1.1);
}
.scroll-btn-left{left:-25px}
.scroll-btn-right{right:-25px}

/* Scroll Indicators */
.scroll-indicators{
  display:flex;justify-content:center;gap:8px;margin-top:24px;
}
.indicator{
  width:12px;height:12px;border-radius:50%;
  background:var(--line);cursor:pointer;
  transition:all 0.3s ease;
}
.indicator.active, .indicator:hover{
  background:var(--accent);transform:scale(1.2);
}

/* Enhanced Project Cards */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:32px}
.project-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:32px;transition:all .3s ease;
  box-shadow:0 4px 20px rgba(0,0,0,.05);
}
.project-card:hover{
  transform:translateY(-8px);
  box-shadow:0 20px 60px rgba(0,0,0,.1);
  border-color:var(--accent);
}
.project-header{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.project-icon{font-size:2rem}
.project-title{font-size:1.25rem;font-weight:600;margin:0;color:var(--text)}
.project-desc{color:var(--muted);margin-bottom:20px;line-height:1.6}
.project-tech{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.tech-tag{
  background:var(--pill);color:var(--text);
  padding:4px 12px;border-radius:20px;font-size:0.85rem;
  border:1px solid var(--line);
}
.project-links{display:flex;gap:12px}
.project-link{
  padding:8px 16px;border-radius:8px;font-weight:500;
  transition:all 0.3s ease;border:1px solid var(--line);
}
.project-link.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.project-link.primary:hover{background:#1d4ed8}
.project-link:hover{background:var(--pill)}

/* Experience Timeline */
.timeline{position:relative;padding-left:40px}
.timeline::before{
  content:'';position:absolute;left:20px;top:0;bottom:0;
  width:2px;background:var(--line);
}
.timeline-item{position:relative;margin-bottom:40px;padding-left:40px}
.timeline-item::before{
  content:'';position:absolute;left:-30px;top:8px;
  width:12px;height:12px;border-radius:50%;
  background:var(--accent);border:3px solid #fff;
  box-shadow:0 0 0 3px var(--line);
}
.timeline-date{color:var(--accent);font-weight:600;font-size:0.9rem}
.timeline-title{font-size:1.2rem;font-weight:600;margin:4px 0 8px 0}
.timeline-company{color:var(--muted);margin-bottom:12px}
.timeline-desc{color:var(--muted);line-height:1.6}

/* Contact Section */
.contact-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-info{font-size:1.1rem;line-height:1.7}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px}
.form-group{margin-bottom:24px}
.form-label{display:block;margin-bottom:8px;font-weight:500}
.form-input{
  width:100%;padding:12px 16px;border:1px solid var(--line);
  border-radius:8px;font-size:1rem;transition:border-color 0.3s ease;
}
.form-input:focus{outline:none;border-color:var(--accent)}
.form-textarea{resize:vertical;min-height:120px}
.form-button{
  background:var(--accent);color:#fff;border:none;
  padding:12px 32px;border-radius:8px;font-weight:500;
  cursor:pointer;transition:background 0.3s ease;
}
.form-button:hover{background:#1d4ed8}

/* Animations */
.fade-in{opacity:0;transform:translateY(30px);transition:all 0.6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* Responsive Design */

/* Large Desktop (1200px+) */
@media (min-width:1200px){
  .container{max-width:1400px}
  .hero{min-height:100vh}
  .section-title{font-size:3rem}
  .projects-grid{grid-template-columns:repeat(2,1fr)}
  .highlights-grid{grid-template-columns:repeat(3,1fr)}
}

/* Desktop/Laptop (992px - 1199px) */
@media (max-width:1199px) and (min-width:992px){
  .container{max-width:1100px}
  .projects-grid{grid-template-columns:repeat(2,1fr)}
  .highlights-grid{grid-template-columns:repeat(3,1fr)}
}

/* Tablet/iPad (768px - 991px) */
@media (max-width:991px) and (min-width:768px){
  .container{padding:40px 32px}
  .hero{min-height:85vh}
  .avatar{width:160px;height:160px}
  .section-title{font-size:2.2rem}
  .about-content{grid-template-columns:1fr;gap:50px}
  .contact-content{grid-template-columns:1fr;gap:50px}
  .projects-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .highlights-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .nav-fixed{left:24px;right:24px;transform:none}
  .pill{padding:0 16px;font-size:0.8rem}
  .scroll-btn{width:45px;height:45px}
  .scroll-btn-left{left:-22px}
  .scroll-btn-right{right:-22px}
  .testimonial-author{margin:0 55px}
}

/* Small Tablet/Large Phone (576px - 767px) */
@media (max-width:767px) and (min-width:576px){
  .container{padding:32px 24px}
  .hero{min-height:80vh}
  .avatar{width:140px;height:140px}
  .section-title{font-size:2rem}
  .about-content{grid-template-columns:1fr;gap:40px}
  .contact-content{grid-template-columns:1fr;gap:40px}
  .projects-grid{grid-template-columns:1fr;gap:24px}
  .highlights-grid{grid-template-columns:1fr;gap:24px}
  .nav-fixed{left:20px;right:20px;transform:none;padding:6px}
  .pill-nav{gap:6px}
  .pill{padding:0 14px;height:36px;font-size:0.8rem}
  .scroll-btn{width:42px;height:42px;font-size:1.3rem}
  .scroll-btn-left{left:-21px}
  .scroll-btn-right{right:-21px}
  .testimonial-author{margin:0 52px}
  .timeline{padding-left:30px}
  .timeline-item{padding-left:30px}
}

/* Mobile Phone (up to 575px) */
@media (max-width:575px){
  .container{padding:24px 16px}
  .hero{min-height:75vh;padding:20px 0}
  .avatar{width:120px;height:120px}
  .name{font-size:clamp(24px,6vw,32px)}
  .subtitle{letter-spacing:.15em;font-size:0.8rem}
  .intro{font-size:1rem}
  .section-title{font-size:1.8rem}
  .section-subtitle{font-size:1rem}
  .section{padding:50px 0}
  .about-content{grid-template-columns:1fr;gap:32px}
  .contact-content{grid-template-columns:1fr;gap:32px}
  .projects-grid{grid-template-columns:1fr;gap:20px}
  .highlights-grid{grid-template-columns:1fr;gap:20px}
  .project-card{padding:24px}
  .highlight-card{padding:24px}
  .nav-fixed{left:12px;right:12px;transform:none;padding:4px}
  .pill-nav{gap:4px;flex-wrap:wrap}
  .pill{padding:0 12px;height:32px;font-size:0.75rem}
  .socials{gap:12px;flex-wrap:wrap}
  .icon-btn{width:44px;height:44px}
  .scroll-btn{width:38px;height:38px;font-size:1.1rem}
  .scroll-btn-left{left:-19px}
  .scroll-btn-right{right:-19px}
  .testimonial-author{margin:0 48px;font-size:0.85rem}
  .testimonial-text{font-size:1rem}
  .timeline{padding-left:25px}
  .timeline-item{padding-left:25px;margin-bottom:30px}
  .timeline::before{left:15px}
  .timeline-item::before{left:-25px}
  .form-input{padding:10px 14px}
  .form-button{padding:10px 24px}
}

/* Extra Small Phones (up to 360px) */
@media (max-width:360px){
  .container{padding:20px 12px}
  .hero{min-height:70vh}
  .avatar{width:100px;height:100px}
  .name{font-size:clamp(20px,7vw,28px)}
  .subtitle{font-size:0.75rem;letter-spacing:.1em}
  .intro{font-size:0.9rem}
  .section-title{font-size:1.6rem}
  .section{padding:40px 0}
  .nav-fixed{left:8px;right:8px;padding:3px}
  .pill{padding:0 10px;height:30px;font-size:0.7rem}
  .socials{gap:10px}
  .icon-btn{width:40px;height:40px}
  .icon{width:18px;height:18px}
  .scroll-btn{width:35px;height:35px;font-size:1rem}
  .scroll-btn-left{left:-17px}
  .scroll-btn-right{right:-17px}
  .testimonial-author{margin:0 44px;font-size:0.8rem}
  .project-card{padding:20px}
  .highlight-card{padding:20px}
}