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

body {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
  min-height: 100vh;
  color: #fff;
  overflow-x: hidden;
}

/* Simplified Background - ONLY 4 bubbles */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bubble {
  position: absolute;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 50%;
  z-index: -1;
}

@keyframes simpleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* Hide bubbles on mobile to prevent visual issues */
@media (max-width: 991px) {
  .background-animation {
    display: none;
  }
}

/* Navbar */
.navbar {
  position: fixed;
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #3b82f6;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1100;
}

.hamburger {
  width: 25px;
  height: 3px;
  background: #3b82f6;
  margin: 3px 0;
  transition: 0.3s;
}

.mobile-menu.active .hamburger:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu.active .hamburger:nth-child(2) {
  opacity: 0;
}

.mobile-menu.active .hamburger:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Main Container */
.main-container {
  padding-top: 80px;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* Content Sections - FIXED no extra space */
.content-section {
  display: none;
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  padding: 2rem 0;
}

.content-section.active {
  display: block;
  opacity: 1;
  transform: translateX(0);
}

/* Home Section - RESTORED ORIGINAL SIDE BY SIDE LAYOUT */
.home-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  min-height: calc(100vh - 120px);
  padding: 2rem;
  border-radius: 25px;
  border: 2px solid #3b82f6;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

/* Desktop - Add corner decorations */
.home-section::before,
.home-section::after {
  display: none;
}

.profile-section {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* Animated Glowing Ring Behind Profile */
.profile-section::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: linear-gradient(45deg, 
    rgba(59, 130, 246, 0.4) 0%, 
    rgba(147, 51, 234, 0.4) 25%,
    rgba(59, 130, 246, 0.4) 50%,
    rgba(147, 51, 234, 0.4) 75%,
    rgba(59, 130, 246, 0.4) 100%);
  background-size: 400% 400%;
  animation: gradientRotate 8s ease infinite;
  filter: blur(20px);
  z-index: 0;
}

/* Rotating Border Effect */
.profile-section::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: rgba(59, 130, 246, 0.8);
  border-right-color: rgba(147, 51, 234, 0.6);
  animation: rotateBorder 4s linear infinite;
  z-index: 0;
}

@keyframes gradientRotate {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes rotateBorder {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.profile-section img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
  transition: transform 0.3s;
  position: relative;
  z-index: 1;
  border: 3px solid rgba(59, 130, 246, 0.3);
}

.profile-section img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 50px rgba(59, 130, 246, 0.8);
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem;
}

.hero-content h1 {
  font-size: 4rem;
  margin: 0;
  color: #fff;
  line-height: 1.2;
}

.highlight {
  color: #3b82f6;
}

.hero-description {
  font-size: 1.4rem;
  color: #cbd5e1;
  margin: 0;
}

.cta-button {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform 0.3s;
  text-decoration: none;
  display: inline-block;
  width: fit-content;
}

.cta-button:hover {
  transform: translateY(-3px);
}

.social-links {
  display: flex;
  gap: 20px;
}

.social-box {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 55px;
  height: 55px;
  transition: transform 0.3s;
  border-radius: 10px;
}

.social-box img {
  width: 28px;
  height: 28px;
}

.social-box:hover {
  transform: translateY(-5px);
}

.social-box.linkedin:hover {
  border-color: #0A66C2;
  box-shadow: 0 0 15px rgba(10, 102, 194, 0.6);
}

.social-box.github:hover {
  border-color: #fff;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.social-box.email:hover {
  border-color: #d93025;
  box-shadow: 0 0 15px rgba(217, 48, 37, 0.6);
}

/* Content Boxes with Animated Border Only */
.content-box {
  background: rgba(10, 14, 39, 0.9);
  border-radius: 20px;
  padding: 3rem;
  backdrop-filter: blur(10px);
  border: 2px solid rgba(59, 130, 246, 0.3);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  animation: borderColorChange 4s ease-in-out infinite;
}

/* Animated Border Color Shift */
@keyframes borderColorChange {
  0%, 100% {
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3),
                0 0 20px rgba(59, 130, 246, 0.2);
  }
  50% {
    border-color: rgba(147, 51, 234, 0.5);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3),
                0 0 30px rgba(147, 51, 234, 0.3);
  }
}

.content-box h2 {
  color: #3b82f6;
  margin-bottom: 2rem;
  font-size: 2.5rem;
  text-align: center;
}

.content-box p {
  font-size: 1.2rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 1rem;
}

/* Navigation Buttons with Subtle Glow */
.nav-buttons {
  display: flex;
  justify-content: space-between;
  margin-bottom: 25px;
}

.back-btn,
.next-btn {
  background: rgba(59, 130, 246, 0.1);
  color: #fff;
  padding: 10px 20px;
  min-width: 100px;
  border: 2px solid rgba(59, 130, 246, 0.5);
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

/* Subtle Pulse Animation */
.back-btn::before,
.next-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
  transform: translate(-50%, -50%) scale(0);
  animation: subtlePulse 3s ease-in-out infinite;
  z-index: -1;
}

@keyframes subtlePulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.5;
  }
}

.back-btn:hover,
.next-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
  border-color: #3b82f6;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.skill-box {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-left: 4px solid #3b82f6;
  padding: 1.5rem;
  border-radius: 15px;
  text-align: center;
  transition: transform 0.3s;
}

.skill-box:hover {
  transform: translateY(-5px);
  background: rgba(59, 130, 246, 0.25);
}

.skill-box h3 {
  color: #3b82f6;
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.skill-icons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.skill-icons img {
  width: 45px;
  height: 45px;
  transition: transform 0.3s;
}

.skill-icons img:hover {
  transform: scale(1.2);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.project-card {
  display: block;
  background: rgba(59, 130, 246, 0.15);
  padding: 1.5rem;
  border-radius: 15px;
  border-left: 4px solid #3b82f6;
  color: #fff;
  text-decoration: none;
  transition: transform 0.3s;
}

.project-card h3 {
  margin-bottom: 0.8rem;
  color: #3b82f6;
}

.project-card p {
  color: #cbd5e1;
  font-size: 1rem;
  line-height: 1.6;
}

.project-card:hover {
  transform: translateY(-5px);
  background: rgba(59, 130, 246, 0.25);
}

/* Certifications */
.cert-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.cert-list li {
  background: rgba(59, 130, 246, 0.15);
  padding: 1.4rem 1.8rem;
  border-radius: 16px;
  font-size: 1.05rem;
  cursor: pointer;
  transition: transform 0.3s;
  line-height: 1.6;
}

.cert-list li:hover {
  transform: translateY(-5px);
  background: rgba(59, 130, 246, 0.25);
}

.cert-list li strong {
  color: #3b82f6;
  font-size: 1.1rem;
}

.certificate-paragraph {
  margin-top: 0.5rem;
  color: #cbd5e1;
}

/* Certification Popup */
.cert-popup {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.cert-popup-content {
  background: rgba(10, 14, 39, 0.98);
  padding: 2rem;
  border-radius: 20px;
  position: relative;
  max-width: 900px;
  max-height: 90vh;
  overflow: auto;
  text-align: center;
  box-shadow: 0 10px 50px rgba(59, 130, 246, 0.4);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.cert-popup-content .close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 2rem;
  color: #ecebeb;
  cursor: pointer;
  background: none;
  border: none;
}

.cert-popup-content .close-btn:hover {
  color: #3b82f6;
}

.cert-full {
  max-width: 100%;
  max-height: 80vh;
  display: block;
  margin: 2rem auto 0;
  border-radius: 12px;
}

/* Contact Form */
.contact-form {
  display: grid;
  gap: 1.5rem;
  max-width: 600px;
  margin: 0 auto;
}

.contact-form input,
.contact-form textarea {
  padding: 1.2rem;
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-radius: 15px;
  font-size: 1.1rem;
  background: rgba(59, 130, 246, 0.05);
  color: #fff;
  transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #3b82f6;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
  padding: 1.2rem 2rem;
  border: none;
  border-radius: 15px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform 0.3s;
}

.contact-form button:hover {
  transform: translateY(-3px);
}

/* ===================================== */
/* RESPONSIVE - MOBILE & TABLET */
/* ===================================== */

@media (max-width: 991px) {
  .mobile-menu {
    display: flex;
  }

  /* FIXED MOBILE MENU - PERFECTLY CENTERED */
  .nav-links {
    position: fixed;
    top: 50vh !important;
    left: 50vw !important;
    transform: translate(-50%, -50%) scale(0) !important;
    flex-direction: column;
    background: rgba(10, 14, 39, 0.98);
    padding: 2.5rem 2rem;
    gap: 1rem;
    border-radius: 20px;
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
    border: 2px solid rgba(59, 130, 246, 0.4);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 85%;
    max-width: 350px;
    z-index: 9999;
    margin: 0 !important;
  }

  .nav-links.active {
    transform: translate(-50%, -50%) scale(1) !important;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    font-size: 1.15rem;
    padding: 0.9rem 1.5rem;
    width: 100%;
    text-align: center;
    display: block;
    border-radius: 10px;
  }

  .main-container {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    padding-top: 70px;
  }

  /* MOBILE HOME - FULL SCREEN COVERAGE */
  .home-section {
    grid-template-columns: 1fr;
    padding: 2rem 0.5rem;
    text-align: center;
    gap: 0;
    min-height: calc(100vh - 90px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 15px;
    margin: 0;
    width: 100%;
  }

  /* Full width decorative corners for mobile */
  .home-section::before {
    content: "";
    position: absolute;
    top: 20px;
    left: 20px;
    width: 60px;
    height: 60px;
    border-top: 3px solid rgba(59, 130, 246, 0.4);
    border-left: 3px solid rgba(59, 130, 246, 0.4);
    border-radius: 10px 0 0 0;
    display: block;
  }

  .home-section::after {
    content: "";
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-bottom: 3px solid rgba(59, 130, 246, 0.4);
    border-right: 3px solid rgba(59, 130, 246, 0.4);
    border-radius: 0 0 10px 0;
    display: block;
  }

  /* Compact Profile Section */
  .profile-section {
    margin-bottom: 1rem;
  }

  .profile-section::before {
    width: 230px;
    height: 230px;
  }

  .profile-section::after {
    width: 210px;
    height: 210px;
  }

  .profile-section img {
    width: 190px;
    height: 190px;
  }

  /* Hero Content - No Extra Gaps */
  .hero-content {
    padding: 0;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
  }

  .hero-content h1 {
    font-size: 2.2rem;
    margin: 0;
    line-height: 1.2;
  }

  .hero-description {
    font-size: 1.1rem;
    margin: 0.3rem 0;
  }

  .cta-button {
    margin: 0.8rem 0;
    padding: 0.85rem 2rem;
    font-size: 1rem;
  }

  .social-links {
    justify-content: center;
    margin-top: 0.5rem;
    gap: 18px;
  }

  .social-box {
    width: 52px;
    height: 52px;
  }

  .content-box {
    padding: 2rem 1.5rem;
  }

  .content-box h2 {
    font-size: 2rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .navbar {
    padding: 0.9rem 0.5rem;
  }

  .logo {
    font-size: 1.3rem;
  }

  .nav-links {
    width: 88%;
    max-width: 320px;
    padding: 2rem 1.5rem;
    top: 50vh !important;
    left: 50vw !important;
  }

  .nav-links a {
    font-size: 1.05rem;
    padding: 0.8rem 1.2rem;
  }

  .main-container {
    padding-top: 65px;
    padding-left: 0.3rem;
    padding-right: 0.3rem;
  }

  /* FULL SCREEN MOBILE HOME */
  .home-section {
    padding: 2rem 0.3rem;
    min-height: calc(100vh - 80px);
    border-radius: 12px;
  }

  .home-section::before {
    top: 15px;
    left: 15px;
    width: 50px;
    height: 50px;
  }

  .home-section::after {
    bottom: 15px;
    right: 15px;
    width: 50px;
    height: 50px;
  }

  .profile-section {
    margin-bottom: 0.8rem;
  }

  .profile-section::before {
    width: 200px;
    height: 200px;
  }

  .profile-section::after {
    width: 180px;
    height: 180px;
  }

  .profile-section img {
    width: 165px;
    height: 165px;
  }

  .hero-content {
    gap: 0.6rem;
  }

  .hero-content h1 {
    font-size: 1.9rem;
  }

  .hero-description {
    font-size: 1rem;
    margin: 0.2rem 0;
  }

  .cta-button {
    padding: 0.8rem 1.8rem;
    font-size: 0.95rem;
    margin: 0.6rem 0;
  }

  .social-links {
    margin-top: 0.4rem;
    gap: 16px;
  }

  .social-box {
    width: 48px;
    height: 48px;
  }

  .social-box img {
    width: 26px;
    height: 26px;
  }

  .content-box {
    padding: 1.5rem 1rem;
  }

  .content-box h2 {
    font-size: 1.8rem;
  }

  .content-box p {
    font-size: 1rem;
  }

  .back-btn,
  .next-btn {
    padding: 8px 14px;
    font-size: 0.9rem;
    min-width: 80px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .skill-icons img {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 479px) {
  .logo {
    font-size: 1.1rem;
  }

  .navbar {
    padding: 0.8rem 0.8rem;
  }

  .nav-links {
    width: 90%;
    max-width: 300px;
    padding: 1.8rem 1.2rem;
    gap: 0.8rem;
    top: 50vh !important;
    left: 50vw !important;
  }

  .nav-links a {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }

  .main-container {
    padding-top: 60px;
  }

  /* EXTRA COMPACT FOR SMALL SCREENS */
  .home-section {
    padding: 1rem 0.6rem;
    min-height: calc(100vh - 70px);
  }

  .profile-section {
    margin-bottom: 0.6rem;
  }

  .profile-section::before {
    width: 180px;
    height: 180px;
  }

  .profile-section::after {
    width: 160px;
    height: 160px;
  }

  .profile-section img {
    width: 145px;
    height: 145px;
  }

  .hero-content {
    gap: 0.5rem;
  }

  .hero-content h1 {
    font-size: 1.7rem;
    line-height: 1.15;
  }

  .hero-description {
    font-size: 0.9rem;
    margin: 0.1rem 0;
  }

  .cta-button {
    padding: 0.75rem 1.6rem;
    font-size: 0.9rem;
    margin: 0.5rem 0;
  }

  .social-links {
    gap: 14px;
    margin-top: 0.3rem;
  }

  .social-box {
    width: 44px;
    height: 44px;
  }

  .social-box img {
    width: 24px;
    height: 24px;
  }

  .content-box {
    padding: 1.2rem 0.8rem;
  }

  .content-box h2 {
    font-size: 1.5rem;
  }

  .back-btn,
  .next-btn {
    padding: 7px 12px;
    font-size: 0.85rem;
    min-width: 70px;
  }

  .skill-icons img {
    width: 35px;
    height: 35px;
  }
}