/* ===== CSS Variables ===== */
:root{
  --primary-color:#6366f1;
  --primary-dark:#4f46e5;
  --secondary-color:#8b5cf6;
  --accent-color:#ec4899;
  --text-primary:#1f2937;
  --text-secondary:#6b7280;
  --bg-primary:#ffffff;
  --bg-secondary:#f9fafb;
  --bg-dark:#111827;
  --gradient-1:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
  --gradient-2:linear-gradient(135deg,#f093fb 0%,#f5576c 100%);
  --gradient-3:linear-gradient(135deg,#4facfe 0%,#00f2fe 100%);
  --shadow-sm:0 2px 4px rgba(0,0,0,0.1);
  --shadow-md:0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg:0 10px 25px rgba(0,0,0,0.15);
  --shadow-xl:0 20px 40px rgba(0,0,0,0.2);

  /* navbar height used by mobile nav offsets */
  --nav-height:70px;
}

/* ===== Reset & Base Styles ===== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Poppins',sans-serif;
  color:var(--text-primary);
  background-color:var(--bg-primary);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  /* ensure content doesn't hide under fixed navbar on small screens */
  padding-top:var(--nav-height);
}

/* ===== Containers & Sections ===== */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:100px 0;position:relative}
.section-title{
  font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:60px;
  background:var(--gradient-1);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  position:relative;
}
.section-title::after{
  content:'';position:absolute;bottom:-10px;left:50%;transform:translateX(-50%);
  width:80px;height:4px;background:var(--gradient-1);border-radius:2px;
}

/* ===== Navigation ===== */
.navbar{
  position:fixed;top:0;left:0;width:100%;
  height:var(--nav-height);
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-sm);
  z-index:1000;transition:all .3s ease;
}
.navbar.scrolled{box-shadow:var(--shadow-md)}
.nav-container{
  max-width:1200px;margin:0 auto;padding:1rem 20px;
  display:flex;justify-content:space-between;align-items:center;height:100%;
}
.logo{font-size:1.5rem;font-weight:800}
.logo-text{
  background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.nav-menu{display:flex;list-style:none;gap:2rem;align-items:center}
.nav-menu a{display:inline-block}
.nav-link{
  text-decoration:none;color:var(--text-primary);font-weight:500;transition:color .3s ease;position:relative;padding:6px 0;
}
.nav-link::after{
  content:'';position:absolute;bottom:-5px;left:0;width:0;height:2px;background:var(--gradient-1);transition:width .3s ease;
}
.nav-link:hover{color:var(--primary-color)}
.nav-link:hover::after{width:100%}

/* hamburger */
.hamburger{display:none;flex-direction:column;cursor:pointer;gap:5px}
.hamburger span{
  width:25px;height:3px;background:var(--text-primary);border-radius:3px;transition:all .3s ease;
}

/* ===== Hero Section ===== */
.hero{
  min-height:calc(100vh - var(--nav-height));
  display:flex;align-items:center;justify-content:center;position:relative;overflow:visible;
  padding-top:calc(var(--nav-height) + 10px);padding-bottom:40px;
}
.hero-background{position:absolute;top:0;left:0;width:100%;height:100%;z-index:-1}
.animated-bg{
  width:100%;height:100%;
  background:linear-gradient(135deg,#667eea 0%,#764ba2 50%,#f093fb 100%);
  background-size:400% 400%;animation:gradientShift 15s ease infinite;opacity:.1;
}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

.hero-content{
  max-width:1200px;margin:0 auto;padding:0 20px;
  display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;
}
.hero-text{animation:fadeInUp 1s ease;width:100%;visibility:visible;opacity:1}
.hero-title{margin-bottom:1.5rem}
.greeting{display:block;font-size:1.5rem;font-weight:400;color:var(--text-secondary);margin-bottom:.5rem}
.name{
  display:block;font-size:3.5rem;font-weight:800;background:var(--gradient-1);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2;
}
.hero-subtitle{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem}
.hero-description{font-size:1.1rem;color:var(--text-secondary);margin-bottom:2rem}

/* Buttons */
.hero-buttons{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}
.btn{
  padding:12px 30px;border-radius:50px;text-decoration:none;font-weight:600;
  transition:all .3s ease;display:inline-block;border:2px solid transparent;
}
.btn-primary{background:var(--gradient-1);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-secondary{background:transparent;color:var(--primary-color);border-color:var(--primary-color)}
.btn-secondary:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px)}
.btn-resume{background:var(--gradient-2);color:#fff;box-shadow:var(--shadow-md);display:inline-flex;align-items:center;gap:.5rem}
.btn-resume i{font-size:1rem}
.btn-resume:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}

/* Social links (rounded buttons) */
.social-links{display:flex;gap:1rem;flex-wrap:wrap;justify-content:flex-start;visibility:visible;opacity:1}
.social-link{
  width:45px;height:45px;border-radius:50%;background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;
  color:var(--primary-color);font-size:1.2rem;transition:all .3s ease;text-decoration:none;
}
.social-link:hover{background:var(--gradient-1);color:#fff;transform:translateY(-3px);box-shadow:var(--shadow-md)}
.social-link .fa-linkedin{color:#0077b5}
.social-link .fa-github{color:#333}
.social-link .fa-envelope{color:#ea4335}
.social-link .fa-phone{color:#34a853}
.social-link:hover .fa-linkedin,.social-link:hover .fa-github,.social-link:hover .fa-envelope,.social-link:hover .fa-phone{color:#fff}

/* profile card */
.hero-image{display:flex;justify-content:center;align-items:center;animation:fadeInRight 1s ease}
.profile-card{
  width:320px;height:320px;border-radius:50%;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.12);backdrop-filter:blur(12px);animation:float 4s ease-in-out infinite;box-shadow:0 20px 45px rgba(99,102,241,0.25);
}
.profile-card::before{
  content:"";position:absolute;inset:-4px;border-radius:inherit;padding:4px;
  background:linear-gradient(135deg,#667eea,#764ba2,#f093fb);background-size:300% 300%;animation:borderGlow 8s ease infinite;z-index:-1;
}
.profile-card::after{
  content:"";position:absolute;width:140%;height:140%;background:radial-gradient(circle,rgba(118,75,162,0.25),transparent 70%);
  filter:blur(40px);z-index:-2;
}
.profile-photo{width:100%;height:100%;object-fit:cover;border-radius:50%;transition:.4s ease;border:6px solid rgba(255,255,255,.3)}
.profile-photo:hover{transform:scale(1.08)}
@keyframes borderGlow{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}

/* scroll indicator */
.scroll-indicator{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--text-secondary);
  animation:bounce 2s infinite;
}
.scroll-indicator i{font-size:1.5rem}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-10px)}}

/* ===== About Section ===== */
.about{background:var(--bg-secondary)}
.about-content{max-width:800px;margin:0 auto}
.about-description{font-size:1.1rem;color:var(--text-secondary);margin-bottom:1.5rem;line-height:1.8}
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-top:2rem}
.info-item{display:flex;align-items:center;gap:1rem;padding:1rem;background:white;border-radius:10px;box-shadow:var(--shadow-sm);transition:all .3s ease}
.info-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.info-item i{font-size:1.5rem;color:var(--primary-color)}

/* ===== Timeline / Education ===== */
.timeline{max-width:800px;margin:0 auto;position:relative;padding-left:2rem}
.timeline::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gradient-1)}
.timeline-item{position:relative;margin-bottom:3rem;padding-left:3rem;animation:fadeInUp .6s ease}
.timeline-marker{position:absolute;left:-1.65rem;top:0;width:20px;height:20px;border-radius:50%;background:var(--gradient-1);border:4px solid white;box-shadow:var(--shadow-md)}
.timeline-content{background:white;padding:2rem;border-radius:15px;box-shadow:var(--shadow-md);transition:all .3s ease}
.timeline-content:hover{transform:translateX(10px);box-shadow:var(--shadow-lg)}
.timeline-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.5rem;flex-wrap:wrap;gap:1rem}
.timeline-icon-wrapper{display:flex;align-items:center;justify-content:center;width:50px;height:50px;min-width:50px;background:var(--gradient-1);border-radius:12px;box-shadow:0 4px 12px rgba(102,126,234,.3);transition:all .3s ease}
.timeline-icon-wrapper:hover{transform:scale(1.1) rotate(5deg);box-shadow:0 6px 20px rgba(102,126,234,.4)}
.timeline-icon{font-size:1.5rem;color:white}
.timeline-institute-logo{width:100%;height:100%;object-fit:contain;border-radius:8px;padding:8px}
.timeline-title-wrapper{flex:1;display:flex;flex-direction:row;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.timeline-header h3{font-size:1.5rem;color:var(--text-primary);font-weight:600;margin:0}
.timeline-date{background:var(--gradient-1);color:white;padding:4px 12px;border-radius:15px;font-size:.85rem;font-weight:500;white-space:nowrap;display:inline-block}
.timeline-institution{font-size:1.1rem;font-weight:600;color:var(--primary-color);margin-bottom:.25rem}
.timeline-location{color:var(--text-secondary);margin-bottom:1rem}
.timeline-badge{display:inline-block;background:var(--bg-secondary);color:var(--primary-color);padding:5px 15px;border-radius:20px;font-weight:600;margin-top:.5rem}

/* ===== Experience ===== */
.experience{background:var(--bg-secondary)}
.experience-card{max-width:900px;margin:0 auto;background:white;border-radius:20px;padding:2.5rem;box-shadow:var(--shadow-lg);transition:all .3s ease}
.experience-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-xl)}
.exp-header{display:flex;align-items:flex-start;gap:1.5rem;margin-bottom:2rem;padding-bottom:2rem;border-bottom:2px solid var(--bg-secondary)}
.exp-icon{width:60px;height:60px;border-radius:15px;background:var(--gradient-1);display:flex;align-items:center;justify-content:center;color:white;font-size:1.5rem;flex-shrink:0}
.exp-info{flex:1}
.exp-info h3{font-size:1.5rem;margin-bottom:.5rem;color:var(--text-primary)}
.exp-company{font-size:1.2rem;font-weight:600;color:var(--primary-color);margin-bottom:.25rem}
.exp-location{color:var(--text-secondary)}
.exp-date{background:var(--gradient-1);color:white;padding:8px 20px;border-radius:25px;font-size:.9rem;font-weight:500;white-space:nowrap}
.exp-list{list-style:none}
.exp-list li{display:flex;align-items:flex-start;gap:1rem;margin-bottom:1rem;color:var(--text-secondary);line-height:1.6}
.exp-list li i{color:var(--primary-color);margin-top:5px;flex-shrink:0}

/* ===== Projects ===== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}
.project-card{background:white;border-radius:20px;padding:2.5rem;box-shadow:var(--shadow-md);transition:all .3s ease;position:relative;overflow:hidden}
.project-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:5px;background:var(--gradient-1);transform:scaleX(0);transition:transform .3s ease}
.project-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-xl)}
.project-card:hover::before{transform:scaleX(1)}
.project-icon{width:60px;height:60px;border-radius:15px;background:var(--gradient-1);display:flex;align-items:center;justify-content:center;color:white;font-size:1.5rem;margin-bottom:1.5rem}
.project-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.5rem;flex-wrap:wrap;gap:1rem}
.project-header h3{font-size:1.5rem;color:var(--text-primary);font-weight:600}
.project-role{background:var(--bg-secondary);color:var(--primary-color);padding:5px 15px;border-radius:20px;font-size:.85rem;font-weight:600}
.project-period{color:var(--text-secondary);font-size:.9rem;margin-bottom:1rem}
.project-description{color:var(--text-secondary);margin-bottom:1.5rem;line-height:1.6}
.project-features{list-style:none;margin-bottom:1.5rem}
.project-features li{color:var(--text-secondary);margin-bottom:.75rem;padding-left:1.5rem;position:relative;line-height:1.6}
.project-features li::before{content:'✓';position:absolute;left:0;color:var(--primary-color);font-weight:bold}
.project-tech{display:flex;flex-wrap:wrap;gap:.5rem}
.tech-tag{background:var(--bg-secondary);color:var(--primary-color);padding:5px 12px;border-radius:15px;font-size:.85rem;font-weight:500}

/* ===== Skills ===== */
.skills{background:var(--bg-secondary)}
.skills-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}
.skill-category{background:white;padding:2rem;border-radius:15px;box-shadow:var(--shadow-md);transition:all .3s ease}
.skill-category:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.category-title{display:flex;align-items:center;gap:1rem;font-size:1.3rem;margin-bottom:1.5rem;color:var(--text-primary)}
.category-title i{color:var(--primary-color);font-size:1.5rem}
.skill-tags{display:flex;flex-wrap:wrap;gap:.75rem}
.skill-tag{background:rgba(255,255,255,.9);color:var(--text-primary);padding:8px 16px;border-radius:20px;font-size:.9rem;font-weight:500;transition:all .3s ease;display:inline-flex;align-items:center;gap:.5rem;border:1px solid rgba(102,126,234,.2);box-shadow:0 2px 8px rgba(0,0,0,.08)}
.skill-tag i{font-size:1rem}
.skill-icon{width:22px;height:22px;object-fit:contain;display:inline-block;vertical-align:middle;margin-right:.5rem;transition:transform .3s ease}
.skill-tag:hover .skill-icon{transform:scale(1.15)}
.skill-tag:hover{transform:scale(1.05);box-shadow:0 4px 12px rgba(102,126,234,.2);border-color:rgba(102,126,234,.4);background:rgba(255,255,255,1)}

/* ===== Activities ===== */
.activities-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}
.activity-card{background:white;padding:2.5rem;border-radius:20px;box-shadow:var(--shadow-md);transition:all .3s ease;text-align:center}
.activity-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-xl)}
.activity-icon{width:80px;height:80px;margin:0 auto 1.5rem;border-radius:50%;background:var(--gradient-1);display:flex;align-items:center;justify-content:center;color:white;font-size:2rem}
.activity-card h3{font-size:1.5rem;margin-bottom:.5rem;color:var(--text-primary)}
.activity-org{font-weight:600;color:var(--primary-color);margin-bottom:.5rem}
.activity-period{color:var(--text-secondary);font-size:.9rem;margin-bottom:1rem}
.activity-description{color:var(--text-secondary);line-height:1.6}

/* ===== Contact Section ===== */
.contact{background:var(--bg-secondary)}
.contact-content{max-width:700px;margin:0 auto;text-align:center;padding:0 10px}
.contact-description{font-size:1.1rem;color:var(--text-secondary);margin-bottom:2rem}
.contact-details{
  display:flex;flex-direction:column;gap:1.5rem;align-items:center; /* center items on mobile */
  width:100%;
}

/* contact item: use flex so icon + text layout remains consistent on all sizes */
.contact-item{
  display:flex;align-items:center;gap:1rem;padding:1.5rem;background:white;border-radius:15px;box-shadow:var(--shadow-md);
  text-decoration:none;color:var(--text-primary);transition:all .3s ease;width:100%;max-width:720px;
}
.contact-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);color:var(--primary-color)}
.contact-item i{font-size:1.5rem;color:var(--primary-color);flex-shrink:0}

/* ensure the text doesn't wrap oddly and sits nicely */
.contact-item span{display:inline-block;white-space:normal;font-size:1rem}

/* ===== Footer ===== */
.footer{background:var(--bg-dark);color:white;text-align:center;padding:2rem 0}
.footer-social-links{display:flex;justify-content:center;align-items:center;gap:1.5rem;margin-bottom:1.5rem;flex-wrap:wrap}
.footer-social-link{
  width:45px;height:45px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:white;font-size:1.2rem;transition:all .3s ease;text-decoration:none;border:2px solid rgba(255,255,255,.2)
}
.footer-social-link:hover{background:var(--gradient-1);border-color:transparent;transform:translateY(-3px);box-shadow:0 5px 15px rgba(102,126,234,.4)}
.footer-note{color:var(--text-secondary);font-size:.9rem;margin-top:.5rem}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeInRight{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}
[data-aos]{opacity:0;transition:all .6s ease}
[data-aos].aos-animate{opacity:1}

/* ===== Responsive Design ===== */

/* Desktop -> Tablet breakpoint */
@media (max-width:968px){
  .hero{min-height:auto;padding-top:calc(var(--nav-height) + 10px);padding-bottom:40px}
  .hero-content{grid-template-columns:1fr;text-align:center;gap:2rem;padding:0 20px}
  .hero-image{order:-1;margin-bottom:2rem}
  .name{font-size:2.5rem}
  .social-links{justify-content:center;flex-wrap:wrap;margin-top:1.5rem}
  .nav-menu{
    position:fixed;left:-100%;top:var(--nav-height);flex-direction:column;background:white;width:100%;text-align:center;transition:all .3s ease;box-shadow:var(--shadow-lg);padding:2rem 0;
  }
  .nav-menu.active{left:0}
  .hamburger{display:flex}
  .hamburger.active span:nth-child(1){transform:rotate(45deg) translate(8px,8px)}
  .hamburger.active span:nth-child(2){opacity:0}
  .hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-7px)}
  .section-title{font-size:2rem}
  .projects-grid{grid-template-columns:1fr}
  .skills-container{grid-template-columns:1fr}
}

/* Smaller tablets / large phones */
@media (max-width:768px){
  .section{padding:60px 0}
  .hero{min-height:auto;padding:80px 0 30px}
  .hero-content{padding:0 15px}
  .hero-text{width:100%}
  .name{font-size:2rem}
  .hero-subtitle{font-size:1.2rem}
  .hero-description{font-size:1rem;margin-bottom:1.5rem}
  .hero-buttons{margin-bottom:1.5rem;justify-content:center}
  .social-links{justify-content:center;gap:.75rem;margin-top:1rem}
  .social-link{width:40px;height:40px;font-size:1rem}
  .footer-social-links{gap:1.2rem;margin-bottom:1.2rem}
  .footer-social-link{width:42px;height:42px;font-size:1.1rem}
  .timeline{padding-left:1.5rem}
  .timeline-item{padding-left:2rem}
  .exp-header{flex-direction:column}
  .exp-date{align-self:flex-start}
  .project-header{flex-direction:column;align-items:flex-start}
  /* contact card tweaks for medium widths */
  .contact-content{padding:0 12px}
  .contact-item{padding:1.25rem;border-radius:14px}
}

/* Small phones */
@media (max-width:480px){
  .hero{padding:70px 0 20px}
  .hero-content{padding:0 10px}
  .hero-buttons{flex-direction:column;gap:.75rem}
  .btn{width:100%;text-align:center;padding:12px 20px}
  .social-links{gap:.5rem;margin-top:1rem}
  .social-link{width:38px;height:38px;font-size:.9rem}
  .profile-card{width:250px;height:250px}
  .profile-card i{font-size:6rem}
  .hero-description{font-size:.95rem}
  .footer-social-links{gap:1rem;margin-bottom:1rem}
  .footer-social-link{width:40px;height:40px;font-size:1rem}
  .name{font-size:1.9rem}
  .hero-subtitle{font-size:1.05rem}
  .contact-item{padding:1rem;border-radius:12px}
}

/* Additional mobile fixes and improvements (overrides) */
@media (max-width:600px){
  /* ensure hero content stacks and centers */
  .hero-content{grid-template-columns:1fr;text-align:center}
  .profile-card{width:280px;height:280px;margin:0 auto 20px auto}
  .name{font-size:2.3rem}
  .hero-subtitle{font-size:1.1rem}

  /* contact: center cards and keep consistent width */
  .contact-content{padding:0 10px}
  .contact-details{gap:1rem}
  .contact-item{width:100%;padding:1.2rem;border-radius:12px;max-width:650px}
  .contact-item i{font-size:1.3rem}

  /* footer: avoid breaking icons into multiple rows on very small screens */
  .footer-social-links{flex-wrap:nowrap;justify-content:center;overflow-x:auto;padding-bottom:10px}
  .footer-social-link{min-width:45px;min-height:45px}

  /* navbar padding adjustment for smaller screens */
  .navbar .nav-container{padding:.7rem 15px}
}

/* Very small extra spacing adjustment (fallback) */
@media (max-width:500px){
  .section{padding:60px 0!important}
}
/* ===== FINAL FIX FOR HERO IMAGE + RESUME BUTTON + SOCIAL ICONS ===== */
@media (max-width: 600px) {
    .profile-card {
        width: 220px !important;
        height: 220px !important;
        margin: 0 auto 15px auto !important;
    }

    .hero-buttons {
        margin-top: 10px !important;
        display: flex !important;
        flex-direction: column !important;
        gap: 10px !important;
    }

    .social-links {
        display: flex !important;
        justify-content: center !important;
        margin-top: 10px !important;
        flex-wrap: wrap !important;
    }
}

/* Remove underline from the navbar logo link */
.logo a,
a.logo {
    text-decoration: none;
    color: inherit;
}
/* Optional: keep focus outline for accessibility, or customize if desired */
/* .logo a:focus { outline: 2px solid #667eea; outline-offset: 2px; } */