html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
}

/* Navbar base styles */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#navbar .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #333;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 25px;
  transition: right 0.3s ease;
}

.nav-links li a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links li a:hover {
  color: #6a82fb;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  z-index: 1100; /* make sure it's above nav-links */
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: #333;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hamburger animation when active */
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 60px; /* below navbar */
    right: -100%;
    width: 220px;
    height: calc(100vh - 60px);
    flex-direction: column;
    background: rgba(255,255,255,0.97);
    padding: 20px;
    gap: 20px;
  }

  .nav-links.show {
    right: 0;
  }

  .hamburger {
    display: flex;
  }
}

/* ---------- About Section ---------- */
.about-section {
  padding: 60px 20px;
  background: #ffffff;
}

.about-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  max-width: 1200px;
  margin: auto;
  flex-wrap: wrap; /* ensures wrapping on small screens */
}

.about-photo img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #ffffff;
}

/* Text */
.about-text {
  max-width: 700px;
  text-align: justify; /* makes paragraph text justified */
}

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #333;
}

.about-text p {
  font-size: 1rem;
  color: #555;
  line-height: 1.6;
  margin-bottom: 25px;
}

/* Buttons */
.about-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap; /* ensures buttons wrap on small screens */
  justify-content: flex-start;
}

.about-buttons .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 500;
  text-decoration: none;
  color: #fff;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
  min-width: 120px; /* prevents collapse on very small screens */
  justify-content: center;
}

/* Individual button colors */
.about-buttons .linkedin {
  background: #0077b5;
}

.about-buttons .leetcode {
  background: #f89f1b;
}

.about-buttons .github {
  background: #24292f;
}

/* Hover Lift + Shine */
.about-buttons .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}

.about-buttons .btn::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -75%;
  width: 50%;
  height: 200%;
  background: rgba(255,255,255,0.2);
  transform: rotate(25deg);
  transition: all 0.7s;
}

.about-buttons .btn:hover::before {
  left: 125%;
}

/* Icon inside button */
.about-buttons .btn-icon {
  width: 16px;
  height: 16px;
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
  .about-container {
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .about-container {
    flex-direction: column;
    gap: 25px;
    text-align: center;
  }

  .about-photo img {
    width: 120px;
    height: 120px;
  }

  .about-text {
    max-width: 100%;
  }

  .about-buttons {
    justify-content: center;
  }

  .about-buttons .btn {
    min-width: 140px;
    padding: 12px 18px;
  }
}

@media (max-width: 480px) {
  .about-photo img {
    width: 100px;
    height: 100px;
  }

  .about-text h2 {
    font-size: 1.6rem;
  }

  .about-text p {
    font-size: 0.95rem;
  }

  .about-buttons .btn {
    font-size: 0.85rem;
    min-width: 120px;
    padding: 10px 14px;
  }
}


/* ---------- Skills Section ---------- */

.skills-section {
  padding: 40px 10px;
  text-align: center;
  background: #ffffff;
}

.skills-section h2 {
  margin-bottom: 25px;
  font-size: 2rem;
  color: #333;
}

/* Row wrapper */
.skills-row {
  position: relative;
  overflow: hidden;
  width: 100%;
  margin: 30px 0;       /* extra spacing between rows */
}

/* Long track */
.skills-track {
  display: flex;
  align-items: center;
  gap: 40px;            /* consistent spacing between icons */
  width: max-content;
}

.skills-track img {
  height: 50px;
  width: auto;
  max-width: 100%;
  transition: transform 0.3s;
}

.skills-track img:hover {
  transform: scale(1.15);
}

/* Animations (scroll across 100%) */
.scroll-right .skills-track {
  animation: scrollRight 40s linear infinite;
}

.scroll-left .skills-track {
  animation: scrollLeft 40s linear infinite;
}

@keyframes scrollRight {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

@keyframes scrollLeft {
  from { transform: translateX(0); }
  to   { transform: translateX(-100%); }
}

/* Responsiveness */
@media (max-width: 1024px) {
  .skills-track img { height: 40px; }
  .skills-section h2 { font-size: 1.8rem; }
}

@media (max-width: 768px) {
  .skills-track img { height: 35px; gap: 30px; }
  .skills-section h2 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .skills-track img { height: 28px; gap: 20px; }
  .skills-section h2 { font-size: 1.3rem; }
}

/* project cards design from here*/
.projects-section {
  padding: 50px 10px;
  background: #ffffff;
  text-align: center;
}

.projects-section h2 {
  margin-bottom: 40px;
  font-size: 2rem;
  color: #333;
}

/* Grid Layout */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: auto;
}

/* Card Styling */
.project-card {
  background: #fff;
  border-radius: 15px;
  overflow: hidden;
  padding: 0;
  text-align: justify;
  text-justify: inter-word;
  line-height: 1.6;
  
  display: flex;
  flex-direction: column;  /* stack elements vertically */
  justify-content: space-between; /* push buttons to bottom */
  
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  min-height: 80%; /* makes all cards equal height in grid */
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 30px rgba(0,0,0,0.392);
}

.project-card img {
  width: 100%;
  height: 150px;           /* fixed height for uniformity */
  object-fit: cover;
}

.project-card h3, 
.project-card p {
  padding: 0 15px;
}

/* ---------- Buttons ---------- */
.card-buttons {
  margin-top: auto;          /* pushes buttons to bottom */
  padding: 10px;             /* reduced padding to make it compact */
  display: flex;
  gap: 8px;                  /* smaller gap between buttons */
  justify-content: center;
  flex-wrap: wrap;           /* so on small screens they wrap instead of stretching */
}

.card-buttons .btn {
  position: relative;
  flex: 1 1 auto;            /* allows equal width distribution */
  min-width: 110px;          /* prevents very tiny buttons */
  max-width: 130px;          /* keeps them compact */
  padding: 8px 14px;         /* smaller padding */
  border-radius: 8px;
  font-size: 0.9rem;         /* slightly smaller text */
  font-weight: 500;
  text-decoration: none;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;   /* centers text+icon */
  gap: 6px;                  /* space between icon and text */
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}


/* Demo Button */
.card-buttons .demo {
  background: linear-gradient(135deg, #6a82fb, #fc5c7d);
  box-shadow: 0 4px 12px rgba(108, 130, 251, 0.3);
}

/* GitHub Button */
.card-buttons .github {
  background: #24292f;
  box-shadow: 0 4px 12px rgba(36, 41, 47, 0.3);
}

/* Hover Lift */
.card-buttons .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}

/* ---------- Shine Effect ---------- */
.card-buttons .btn::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -75%;
  width: 50%;
  height: 200%;
  background: rgba(255,255,255,0.2);
  transform: rotate(25deg);
  transition: all 0.7s;
}

.card-buttons .btn:hover::before {
  left: 125%;
}

/* ---------- Icon Styling ---------- */
.btn-icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
  line-height: 1;
  vertical-align: middle;
}

/* Responsive */
@media (max-width: 1024px) {
  .projects-grid {
    gap: 25px;
  }
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .projects-section h2 {
    font-size: 1.5rem;
  }
}
@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); /* smaller card width */
    gap: 20px; /* spacing between cards */
  }
}

/* ---------- Certifications Section (Distinct from Projects) ---------- */
/* ---------- Certifications (clean icons + smooth shine) ---------- */
.certifications-section {
  padding: 60px 20px;
  background: #ffffff; /* subtle different background to distinguish from projects */
  text-align: center;
}

.certifications-section h2 {
  margin-bottom: 36px;
  font-size: 2rem;
  color: #222;
}

/* Grid: 4 per row on large screens, responsive below */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
  align-items: stretch;   /* 🔑 makes all cards in a row match tallest one */
}

/* card */
.cert-card {
  display: flex;          /* 🔑 flexbox inside card */
  flex-direction: column; /* stack icon, text, button */
  justify-content: space-between; /* push button to bottom */
  background: #fff;
  border-radius: 16px;
  padding: 22px;
  text-align: center;
  box-shadow: 0 8px 22px rgba(20,30,40,0.06);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.cert-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.392);
}

.cert-icon {
  margin-bottom: 14px;
}

/* IMPORTANT: icon images */
.cert-icon img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  display: inline-block;
}

/* headings + text */
.cert-card h3 {
  font-size: 1.05rem;
  margin: 8px 0;
  color: #111;
}
.cert-card p {
  font-size: 0.95rem;
  color: #555;
  margin-bottom: 14px;
  line-height: 1.45;
}

/* Button with smooth transform-based shine */
.cert-btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(90deg,#6a82fb 0%,#fc5c7d 100%);
  position: relative;
  overflow: hidden;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  will-change: transform;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.cert-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(106,130,251,0.14);
}

/* smooth shine using transform (GPU-friendly) */
.cert-btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -50%; /* start offscreen */
  width: 30%;
  height: 100%;
  background: rgba(255,255,255,0.45);
  transform: skewX(-20deg);
  pointer-events: none;
  transition: none; /* remove transition */
}

/* Animate shine on hover using keyframes */
.cert-btn:hover::after {
  animation: shine 0.8s forwards;
}

@keyframes shine {
  0% {
    left: -50%;
  }
  100% {
    left: 120%;
  }
}


/* responsive breakpoints */
@media (max-width: 1024px) {
  .certifications-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .cert-icon img { width: 48px; height: 48px; }
}

@media (max-width: 480px) {
  .certifications-grid { grid-template-columns: 1fr; gap: 18px; }
  .cert-icon img { width: 44px; height: 44px; }
  .certifications-section { padding: 40px 12px; }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Contact Section */
.contact-section {
  padding: 80px 20px;
  background: #ffffff;
  text-align: center;
}

.contact-section h2 {
  font-size: 2rem;
  margin-bottom: 50px;
  color: #222;
}

/* Grid for 4 cards in row */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Card */
.contact-card {
  background: #fff;
  border-radius: 15px;
  padding: 0;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  height: 320px;
  overflow: hidden;
}

.contact-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}

/* SVG Container */
.contact-svg-container {
  width: 100%;
  height: 140px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: transparent;
  padding: 20px;
}

/* Specific SVG backgrounds */
.contact-card:nth-child(1) .contact-svg-container { background: linear-gradient(135deg, #0077b5 0%, #005885 100%); }
.contact-card:nth-child(2) .contact-svg-container { background: linear-gradient(135deg, #25d366 0%, #1da851 100%); }
.contact-card:nth-child(3) .contact-svg-container { background: linear-gradient(135deg, #d44638 0%, #b23121 100%); }
.contact-card:nth-child(4) .contact-svg-container { background: linear-gradient(135deg, #24292f 0%, #1a1e22 100%); }

/* SVG Image */
.contact-svg {
  width: 90px;
  height: 90px;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

/* Content area */
.contact-content {
  padding: 20px 15px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 100%;
}

.contact-card h3 {
  font-size: 1.2rem;
  margin: 0 0 8px 0;
  color: #333;
  text-align: center;
  font-weight: 600;
}

.contact-card p {
  font-size: 0.9rem;
  color: #666;
  margin: 0 0 15px 0;
  text-align: center;
}

/* Buttons */
.contact-card .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  margin: 0 auto;
}

.contact-card .btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.3);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.contact-card .btn:hover::after {
  left: 100%;
}

.contact-card .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}

.btn svg {
  width: 18px;
  height: 18px;
  position: relative;
  z-index: 1;
}

.btn.linkedin { background: #0077b5; }
.btn.whatsapp { background: #25d366; }
.btn.email { background: #d44638; }
.btn.github { background: #24292f; }

/* Responsive */
@media (max-width: 1024px) {
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-card { height: auto; min-height: 300px; }
  .contact-svg-container { height: 120px; }
  .contact-svg { width: 70px; height: 70px; }
}

/* Container for button positioning */
.resume-button-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 2rem 0;
  padding: 1rem;
}

/* Main button styling */
.resume-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 50px;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
  z-index: 1;
}

/* Glow effect background */
.resume-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
  filter: blur(20px);
}

/* Animated shine effect */
.resume-btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transform: rotate(45deg);
  transition: all 0.5s ease;
}

/* Hover state */
.resume-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.resume-btn:hover::before {
  opacity: 1;
}

.resume-btn:hover::after {
  left: 100%;
}

/* Active/pressed state */
.resume-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.4);
}

/* Icon styling */
.btn-icon {
  display: flex;
  align-items: center;
  transition: transform 0.3s ease;
}

.resume-btn:hover .btn-icon {
  transform: translateY(2px);
  animation: bounce 0.6s ease;
}

/* Text styling */
.btn-text {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  letter-spacing: 0.5px;
}

/* Bounce animation for icon */
@keyframes bounce {
  0%, 100% {
    transform: translateY(2px);
  }
  50% {
    transform: translateY(6px);
  }
}

/* Responsive design for tablets */
@media screen and (max-width: 768px) {
  .resume-btn {
    padding: 0.875rem 1.75rem;
    font-size: 0.95rem;
    gap: 0.625rem;
  }
  
  .btn-icon svg {
    width: 18px;
    height: 18px;
  }
}

/* Responsive design for mobile devices */
@media screen and (max-width: 480px) {
  .resume-button-container {
    margin: 1.5rem 0;
    padding: 0.5rem;
  }
  
  .resume-btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    gap: 0.5rem;
  }
  
  .btn-icon svg {
    width: 16px;
    height: 16px;
  }
}

/* Focus state for accessibility */
.resume-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3), 0 8px 25px rgba(102, 126, 234, 0.6);
}

/* Disabled state (optional) */
.resume-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}