:root {
  --primary-color: #64ffda;
  --secondary-color: #112240;
  --background-color: #0a192f;
  --text-color: #ffffff;
  --highlight-color: #233554;
  --card-color: rgba(17, 34, 64, 0.7);
  --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Light theme variables */
.light-theme {
  --primary-color: #0a192f;
  --secondary-color: #f0f0f0;
  --background-color: #ffffff;
  --text-color: #333333;
  --highlight-color: #e0e0e0;
  --card-color: rgba(240, 240, 240, 0.8);
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: "Space Grotesk", sans-serif;
  overflow-x: hidden;
  transition: var(--transition);
}

/* Navigation */
.navbar {
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(10px);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.light-theme .navbar {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-link {
  color: var(--text-color);
  position: relative;
  margin: 0 1rem;
  transition: var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* Theme toggle button */
#theme-toggle {
  transition: var(--transition);
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  border-radius: 50px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.light-theme #theme-toggle {
  border-color: var(--primary-color);
}

/* Hero Section */
.hire-btn {
  background: linear-gradient(90deg, var(--primary-color), aqua);
  color: var(--secondary-color);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  border: none;
  text-decoration: none;
  margin: 0.5rem 3rem 0rem 3rem;
  z-index: 1;
  transform: translateY(0);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.hire-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.hero {
  padding: 7rem 0 5rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.typing {
  min-height: 2.5rem;
  display: inline-block;
}

.hero img {
  margin-top: -10%;
  box-shadow: 0 0 20px rgba(100, 255, 218, 0.3);
  transition: var(--transition);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
  100% {
    transform: translateY(0px);
  }
}

.hero img:hover {
  box-shadow: 0 0 30px rgba(100, 255, 218, 0.5);
}

/* Skills Section */
.skill-card {
  background: var(--card-color);
  padding: 2rem;
  border-radius: 15px;
  transition: var(--transition);
  border: 1px solid var(--highlight-color);
  backdrop-filter: blur(10px);
  transform: scale(1);
  opacity: 0;
}

.skill-card.animate {
  opacity: 1;
  transform: scale(1);
}

.skill-card:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 0 10px 30px rgba(100, 255, 218, 0.1);
}

#education {
  transition: var(--transition);
}

/* Education Section */
.education-card {
  background: var(--card-color);
  border: 1px solid var(--highlight-color);
  transition: var(--transition);
  height: 250px;
  padding: 30px;
  border-radius: 1.5rem;
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(30px);
}

.education-card.animate {
  opacity: 1;
  transform: translateY(0);
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(100, 255, 218, 0.1);
}

#certificate {
  transition: var(--transition);
}

/* certificate cards */
.certificate-card {
  background: var(--card-color);
  border-radius: 1.5rem;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  height: 400px;
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(30px);
}

.certificate-card.animate {
  opacity: 1;
  transform: translateY(0);
}

.certificate-card img {
  height: 250px;
  width: 100%;
  transition: var(--transition);
}

.certificate-card:hover img {
  transform: scale(1.05);
}

.coming-soon-card-certificate {
  background: var(--bs-primary-rgb);
  border-radius: 1.5rem;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: all 0.5s ease-in;
  backdrop-filter: blur(10px);
}

.coming-soon-card-certificate::before {
  content: "Course is not a Completed now";
  position: absolute;
  font-size: 2rem;
  opacity: 0.05;
  z-index: 0;
}

.coming-soon-card-certificate:hover {
  transform: translateY(-10px);
}

#projects {
  transition: var(--transition);
}

/* Project Cards */
.project-card {
  background: var(--card-color);
  border-radius: 15px;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  height: 560px;
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(30px);
}

.project-card.animate {
  opacity: 1;
  transform: translateY(0);
}

.project-card img {
  height: 400px;
  width: 100%;
  transition: var(--transition);
}

.project-card:hover img {
  transform: scale(1.05);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 5px 15px rgba(100, 255, 218, 0.1);
}

.section-title {
  font-size: 2.5rem;
  color: var(--primary-color);
  position: relative;
  display: inline-block;
  opacity: 0;
  transform: translateX(-30px);
}

.section-title.animate {
  opacity: 1;
  transform: translateX(0);
}

.section-title::after {
  content: "";
  width: 60%;
  height: 3px;
  background: var(--primary-color);
  position: absolute;
  bottom: -15px;
  left: 0;
  transition: width 0.3s ease;
}

.coming-soon-card {
  border: 2px solid var(--bs-primary);
  background: rgba(var(--bs-primary-rgb), 0.05);
  min-height: 252px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.coming-soon-card::before {
  content: "🚧";
  position: absolute;
  font-size: 8rem;
  opacity: 0.05;
  z-index: 0;
}

.coming-soon-text {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(45deg, var(--bs-primary), var(--bs-info));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  z-index: 1;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(30, 30, 40, 0.95);
  color: white;
  padding: 3rem;
  border-radius: 1rem;
  z-index: 9999;
  font-size: 1.8rem;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: none;
  width: 35rem;
  max-width: 50rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: popIn 0.4s ease;
}

.light-theme .popup {
  background: rgba(240, 240, 240, 0.95);
  color: #333;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

@keyframes popIn {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }

  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

.popup .massage {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.popup button {
  background: linear-gradient(90deg, var(#6a11cb), var(#2575fc));
  color: black;
  padding: 1rem 2.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1.6rem;
}

.popup button:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* Light mode form adjustments */
.light-theme .contact-card .form-control {
  background-color: #fff !important;
  color: #333 !important;
  border: 1px solid #ddd;
}

.light-theme .contact-card .form-control::placeholder {
  color: #777;
}

/* Form validation */
.form-control.error {
  border: 2px solid #ff3860;
}

.error-message {
  color: #ff3860;
  font-size: 0.9rem;
  margin-top: 0.25rem;
  display: none;
}

/* Particles background */
#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* Progress bars */
.skill-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  margin-top: 10px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: var(--primary-color);
  border-radius: 3px;
  width: 0;
  transition: width 1.5s ease;
}

/* Scroll indicator */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--primary-color);
  width: 0%;
  z-index: 1000;
  transition: width 0.3s ease;
}

/* Animation classes */
.fade-in {
  animation: fadeIn 1s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.slide-in-left {
  animation: slideInLeft 0.8s ease forwards;
}

@keyframes slideInLeft {
  from {
    transform: translateX(-50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.slide-in-right {
  animation: slideInRight 0.8s ease forwards;
}

@keyframes slideInRight {
  from {
    transform: translateX(50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.slide-in-bottom {
  animation: slideInBottom 0.8s ease forwards;
}

@keyframes slideInBottom {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Social icons */
.social-icon {
  transition: var(--transition);
}

.social-icon:hover {
  transform: translateY(-5px) scale(1.1);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-color);
  color: var(--secondary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

/* Success message */
.success-message {
  display: none;
  color: var(--primary-color);
  font-size: 1.2rem;
  margin-top: 1rem;
  text-align: center;
}

/* Loading spinner */
.submit-loader {
  display: none;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
  margin-left: 10px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .hero img {
    width: 200px !important;
  }
  .hire-btn {
    margin: 0.5rem 1rem;
    padding: 0.8rem 1.5rem;
  }
  .skill-card,
  .certificate-card,
  .project-card {
    margin-bottom: 1.5rem;
  }
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero img {
    width: 150px !important;
  }
  .hire-btn {
    margin: 0.5rem 0;
    width: 100%;
  }
  .navbar-brand {
    font-size: 1.2rem;
  }
}