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

:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --bg-dark: #0f172a;
  --bg-light: #f8fafc;
  --card-dark: #1e293b;
  --card-light: #ffffff;
  --text-dark: #ffffff;
  --text-light: #1e293b;
  --text-muted-dark: #cbd5e1;
  --text-muted-light: #64748b;
  --border-dark: #334155;
  --border-light: #e2e8f0;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.3);
}

body.light {
  --bg: var(--bg-light);
  --card: var(--card-light);
  --text: var(--text-light);
  --text-muted: var(--text-muted-light);
  --border: var(--border-light);
}

body {
  --bg: var(--bg-dark);
  --card: var(--card-dark);
  --text: var(--text-dark);
  --text-muted: var(--text-muted-dark);
  --border: var(--border-dark);

  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.3s ease, color 0.3s ease;
  line-height: 1.6;
}

/* ==================== HEADER & NAVBAR ==================== */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease;
}

body.light .header {
  background: rgba(248, 250, 252, 0.9);
}

.navbar {
  padding: 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  width: 100%;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width 0.3s ease;
}

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

.controls {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.theme-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  padding: 0.5rem;
}

.theme-btn:hover {
  transform: rotate(20deg) scale(1.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ==================== HERO SECTION ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 100px 2rem 2rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1), transparent);
  animation: float 20s ease-in-out infinite;
  z-index: 0;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  width: 100%;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.hero-text {
  flex: 1;
  animation: slideInLeft 0.8s ease-out;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  min-height: 2.5rem;
  font-weight: 600;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.socials {
  display: flex;
  gap: 1.5rem;
  margin-top: 2rem;
}

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.1);
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  transition: var(--transition);
  font-size: 1.3rem;
  text-decoration: none;
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: slideInRight 0.8s ease-out;
}

.animated-circle {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: 0.3;
  animation: pulse 4s ease-in-out infinite;
  position: relative;
  object-fit: fill;
}

.animated-circle::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: rotate 20s linear infinite;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==================== BUTTONS ==================== */
.btn {
  padding: 12px 30px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.9rem;
}

/* ==================== SECTIONS ==================== */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.container {
  width: 100%;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 3rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==================== ABOUT SECTION ==================== */
.about-section {
  background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.05));
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-text h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.about-subtitle {
  color: var(--primary-color);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.about-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.info-item {
  padding: 1rem;
  background: rgba(99, 102, 241, 0.1);
  border-left: 3px solid var(--primary-color);
  border-radius: 5px;
  transition: var(--transition);
  text-decoration: none;
}

.info-item:hover {
  transform: translateX(5px);
  background: rgba(99, 102, 241, 0.15);
}

/* ==================== SKILLS SECTION ==================== */
.skills-section {
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.05), transparent);
  position: relative;
  overflow: hidden;
}

.skills-section::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1), transparent);
  border-radius: 50%;
  top: -50px;
  right: -50px;
  animation: float 6s ease-in-out infinite;
}

.skills-section::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08), transparent);
  border-radius: 50%;
  bottom: -100px;
  left: -100px;
  animation: float 8s ease-in-out infinite;
  animation-delay: 1s;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 1;
}

.skill-category {
  background: var(--card);
  padding: 2rem;
  border-radius: 15px;
  border: 2px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
  transition: left 0.5s ease;
}

.skill-category:hover::before {
  left: 100%;
}

.skill-category:hover {
  border-color: var(--primary-color);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.3);
  transform: translateY(-8px);
}

.skill-category h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.08));
  border-radius: 12px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  transition: var(--transition);
  cursor: pointer;
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: scaleUp 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  opacity: 0;
}

.skill-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(99, 102, 241, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.skill-item:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
  transform: scale(1.12) translateY(-8px) rotateZ(2deg);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.25);
  border-color: var(--primary-color);
}

.skill-item:hover::before {
  opacity: 1;
}

.skill-icon {
  width: 70px;
  height: 70px;
  margin-bottom: 1rem;
  transition: var(--transition);
  filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.25));
  animation: float 3s ease-in-out infinite;
  position: relative;
  z-index: 1;
}

.skill-item:hover .skill-icon {
  animation: floatHover 0.6s ease-in-out;
  transform: scale(1.15);
}

.skill-item p {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.skill-item:hover p {
  color: var(--primary-color);
}

/* ==================== EDUCATION SECTION ==================== */
.education-section {
  background: linear-gradient(180deg, transparent, rgba(139, 92, 246, 0.05));
}

.education-timeline {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  position: relative;
  padding-left: 2rem;
}

.education-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.education-item {
  display: flex;
  gap: 1.5rem;
  background: var(--card);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.education-item:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow);
  transform: translateX(10px);
}

.education-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  min-width: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  color: white;
  font-size: 1.5rem;
}

.education-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
}

.education-institution {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.education-year {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

.education-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==================== PROJECTS SECTION ==================== */
.projects-section {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.05), transparent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 1;
}

.project-card {
  background: var(--card);
  border-radius: 15px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  animation: slideUpStagger 0.6s ease-out forwards;
  opacity: 0;
}

.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), transparent);
  opacity: 0;
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.project-card:hover {
  border-color: var(--primary-color);
  box-shadow: 0 20px 50px rgba(99, 102, 241, 0.3);
  transform: translateY(-12px) rotateX(2deg);
}

.project-card:hover::before {
  opacity: 1;
}

.project-header {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-card:hover .project-image {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6));
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  z-index: 3;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .project-overlay {
  opacity: 1;
  backdrop-filter: blur(2px);
  pointer-events: auto;
}

.project-card:focus-within .project-overlay {
  opacity: 1;
  backdrop-filter: blur(2px);
  pointer-events: auto;
}

@media (hover: none) {
  .project-overlay {
    opacity: 1;
    pointer-events: auto;
    backdrop-filter: blur(2px);
  }
}

.project-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 2;
}

.project-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--text);
}

.project-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: auto;
}

.tag {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.1));
  color: var(--primary-color);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
}

.tag:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

/* ==================== CONTACT SECTION ==================== */
.contact-section {
  background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.1));
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}

.detail-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.detail-item i {
  color: var(--primary-color);
  font-size: 1.3rem;
  margin-top: 0.3rem;
}

.detail-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.detail-item a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.detail-item a:hover {
  text-decoration: underline;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.social-icon {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  font-size: 1.3rem;
  transition: var(--transition);
  text-decoration: none;
  border: 2px solid var(--primary-color);
}

.social-icon:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-5px) scale(1.1);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group input,
.form-group textarea {
  padding: 12px 15px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-status {
  padding: 12px 15px;
  border-radius: 8px;
  font-size: 0.95rem;
  display: none;
  margin-top: 1rem;
  animation: slideIn 0.3s ease-out;
}

.form-status.success {
  background: rgba(34, 197, 94, 0.1);
  border: 2px solid #22c55e;
  color: #22c55e;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.1);
  border: 2px solid #ef4444;
  color: #ef4444;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== FOOTER ==================== */
.footer {
  background: var(--card);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  position: relative;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-content p {
  margin: 0.5rem 0;
}

.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  text-decoration: none;
}

.scroll-to-top.show {
  opacity: 1;
  pointer-events: auto;
}

.scroll-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* ==================== MODAL ==================== */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--card);
  margin: 5% auto;
  padding: 2rem;
  border-radius: 15px;
  width: 90%;
  max-width: 600px;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: slideUp 0.3s ease;
}

.close {
  position: absolute;
  right: 20px;
  top: 20px;
  font-size: 2rem;
  font-weight: bold;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.close:hover,
.close:focus {
  color: var(--primary-color);
}

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

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(30px);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.05);
  }
}

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

@keyframes floatHover {
  0%, 100% {
    transform: translateY(0px) scale(1.15);
  }
  50% {
    transform: translateY(-10px) scale(1.15);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(99, 102, 241, 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
  }
}

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

@keyframes scaleUp {
  0% {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes slideUpStagger {
  0% {
    opacity: 0;
    transform: translateY(40px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== FADE-IN ANIMATION ==================== */
.fade-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ==================== BACKGROUND ANIMATIONS ==================== */
.about-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.1), transparent);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.about-section {
  position: relative;
  overflow: hidden;
}

.projects-section::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08), transparent);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite;
  animation-delay: 2s;
}

.projects-section {
  position: relative;
  overflow: hidden;
}

.contact-section {
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -250px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08), transparent);
  border-radius: 50%;
  animation: float 9s ease-in-out infinite;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1024px) {
  .nav-links {
    gap: 1.5rem;
  }

  .hero-content {
    gap: 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-image {
    display: none;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }

  .contact-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    left: -100%;
    top: 60px;
    flex-direction: column;
    background-color: var(--card);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    justify-content: flex-start;
    padding-top: 2rem;
    gap: 1rem;
  }

  .nav-links.active {
    left: 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.3rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .section {
    padding: 3rem 1rem;
  }

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

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

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0.8rem 1rem;
  }

  .logo {
    font-size: 1.4rem;
  }

  .controls {
    gap: 0.5rem;
  }

  .hero {
    padding: 80px 1rem 1rem;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .education-timeline {
    padding-left: 1rem;
  }

  .about-text h3 {
    font-size: 1.5rem;
  }

  .scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}