:root {
  --primary-color: #ff5e5e;
  --primary-hover: #e53e3e;
  --secondary-color: #4fd1c5;
  --accent-color: #ffd700;
  --text-primary: #2d3748;
  --text-secondary: #718096;
  --bg-primary: #f8fafc;
  --bg-secondary: #edf2f7;
  --border-color: #e2e8f0;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --primary-color: #ff8787;
  --primary-hover: #ff6b6b;
  --secondary-color: #81e6d9;
  --accent-color: #ffe68a;
  --text-primary: #e2e8f0;
  --text-secondary: #a0aec0;
  --bg-primary: #1a202c;
  --bg-secondary: #2d3748;
  --border-color: #4a5568;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: var(--transition);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 0.75rem 0;
}

[data-theme="dark"] .navbar {
  background: rgba(26, 32, 44, 0.15);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-link {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--primary-hover);
  transform: translateY(-2px);
}

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

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.2rem;
  padding: 0.5rem;
}

.theme-toggle:hover,
.theme-toggle:focus {
  color: var(--primary-hover);
  transform: scale(1.15);
}

.hero {
  padding: 7rem 1rem 4rem;
  background: linear-gradient(135deg, #fefcbf, #e6fffa);
  text-align: center;
  position: relative;
}

[data-theme="dark"] .hero {
  background: linear-gradient(135deg, #2d3748, #1a202c);
}

.particle-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.profile-img {
  width: 10rem;
  height: 10rem;
  border: 3px solid var(--primary-color);
  border-radius: 50%;
  object-fit: cover;
  transition: var(--transition);
}

.profile-img:hover {
  transform: scale(1.1);
}

.text-gradient {
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.typing-animation {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  border-right: 2px solid var(--primary-color);
  animation: typing 3.5s steps(40, end) infinite, blink 0.8s step-end infinite;
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  from,
  to {
    border-right-color: transparent;
  }
  50% {
    border-right-color: var(--primary-color);
  }
}

.social-link {
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-link:hover,
.social-link:focus {
  color: var(--primary-hover);
  transform: translateY(-3px);
}

.section-title,
.subsection-title {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-title::after,
.subsection-title::after {
  content: "";
  display: block;
  width: 50px;
  height: 2px;
  background: var(--primary-color);
  margin: 0.75rem auto;
}

.bg-gradient {
  background: linear-gradient(135deg, #fefcbf, #e6fffa);
  position: relative;
}

[data-theme="dark"] .bg-gradient {
  background: linear-gradient(135deg, #2d3748, #1a202c);
}

.bg-gradient::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.08;
  z-index: -1;
}

.glassmorphic {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition);
}

[data-theme="dark"] .glassmorphic {
  background: rgba(26, 32, 44, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.modern-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  transition: var(--transition);
}

.modern-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .modern-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.skill-item i {
  color: var(--text-primary);
  transition: var(--transition);
}

.skill-item p {
  font-size: 0.9rem;
  font-weight: 500;
  margin: 0.5rem 0;
}

.skill-item:hover i {
  color: var(--primary-hover);
  transform: scale(1.2);
}

.project-card {
  text-align: center;
  cursor: pointer;
}

.project-icon i {
  color: var(--primary-color);
  transition: var(--transition);
}

.project-card:hover .project-icon i {
  transform: scale(1.2);
}

.education-card,
.experience-card,
.certification-card {
  max-width: 100%;
}

.education-card h4,
.experience-card h4,
.certification-card h4 {
  font-size: 1rem;
  font-weight: 600;
}

.education-card p,
.experience-card p,
.certification-card p {
  font-size: 0.9rem;
}

.form-control {
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 94, 94, 0.2);
}

.btn-primary {
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border: none;
  border-radius: 0.5rem;
  color: #fff;
  font-weight: 500;
  transition: var(--transition);
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 94, 94, 0.3);
}

.footer {
  background: linear-gradient(90deg, #2d3748, #1a202c);
  position: relative;
}

[data-theme="dark"] .footer {
  background: linear-gradient(90deg, #1a202c, #2d3748);
}

.wave {
  position: absolute;
  top: -30px;
  left: 0;
  width: 100%;
  height: 30px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%232D3748' fill-opacity='1' d='M0,192L48,181.3C96,171,192,149,288,160C384,171,480,213,576,213.3C672,213,768,171,864,149.3C960,128,1056,128,1152,149.3C1248,171,1344,213,1392,234.7L1440,256L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,0,320Z'%3E%3C/path%3E%3C/svg%3E");
  background-size: cover;
}

[data-theme="dark"] .wave {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%231A202C' fill-opacity='1' d='M0,192L48,181.3C96,171,192,149,288,160C384,171,480,213,576,213.3C672,213,768,171,864,149.3C960,128,1056,128,1152,149.3C1248,171,1344,213,1392,234.7L1440,256L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,0,320Z'%3E%3C/path%3E%3C/svg%3E");
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--primary-hover);
}

.back-to-top {
  background: var(--primary-color);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  bottom: 1.5rem;
  right: 1.5rem;
  position: fixed;
  transition: var(--transition);
}

.back-to-top:hover,
.back-to-top:focus {
  transform: scale(1.2);
}

@media (max-width: 768px) {
  .hero {
    padding: 6rem 1rem 3rem;
  }
  .profile-img {
    width: 7rem;
    height: 7rem;
  }
  .hero-title {
    font-size: 2rem;
  }
  .section-title,
  .subsection-title {
    font-size: 1.5rem;
  }
  .nav-link {
    padding: 0.5rem 0.8rem;
  }
  .timeline .row {
    flex-direction: column;
  }
  .timeline .col-md-6 {
    order: unset;
  }
}

@media (max-width: 576px) {
  .skills-list {
    row-gap: 0.75rem;
  }
  .skill-item p {
    font-size: 0.8rem;
  }
  .education-card p,
  .experience-card p,
  .certification-card p {
    font-size: 0.85rem;
  }
}