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

:root {
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

body.rtl {
  direction: rtl;
  text-align: right;
}

body.rtl .nav-menu {
  flex-direction: row-reverse;
}

body.rtl .hero-content {
  text-align: right;
}

body.rtl .about-stats {
  flex-direction: row-reverse;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Language Toggle */
.language-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
}

.lang-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: var(--border-radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-light);
}

.lang-btn:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 999;
  padding: 15px 0;
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

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

.nav-menu a:hover {
  color: var(--primary-color);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.floating-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 80px;
  height: 80px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 120px;
  height: 120px;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.shape-3 {
  width: 60px;
  height: 60px;
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

.hero-content {
  color: white;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.name-highlight {
  background: linear-gradient(45deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 20px;
}

.btn {
  padding: 12px 30px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: white;
  color: var(--primary-color);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--primary-color);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-card {
  width: 300px;
  height: 300px;
  perspective: 1000px;
}

.card-inner {
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: cardFloat 4s ease-in-out infinite;
  transform-style: preserve-3d;
}

.profile-avatar {
  font-size: 120px;
  color: rgba(255, 255, 255, 0.8);
}

@keyframes cardFloat {
  0%, 100% {
    transform: rotateY(0deg) rotateX(0deg);
  }
  25% {
    transform: rotateY(5deg) rotateX(5deg);
  }
  50% {
    transform: rotateY(0deg) rotateX(10deg);
  }
  75% {
    transform: rotateY(-5deg) rotateX(5deg);
  }
}

/* Section Styles */
section {
  padding: 100px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text-primary);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 2px;
}

/* About Section */
.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.stat-item {
  text-align: center;
  padding: 30px;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.stat-item h3 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.stat-item p {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Education Section */
.education-card {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
  display: flex;
  align-items: center;
  gap: 30px;
  transition: var(--transition);
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.education-icon {
  font-size: 60px;
  color: var(--primary-color);
  min-width: 80px;
}

.education-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.institution {
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.gpa {
  background: var(--primary-color);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  display: inline-block;
  font-weight: 600;
}

/* Skills Section */
.skills {
  background: var(--bg-secondary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.skill-item {
  background: white;
  padding: 30px;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.skill-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 4px;
  background: var(--bg-gradient);
  transition: var(--transition);
}

.skill-item:hover::before {
  left: 0;
}

.skill-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
}

.skill-icon {
  font-size: 50px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.skill-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.skill-item p {
  color: var(--text-secondary);
}

/* Works Section */
.works-content {
  text-align: center;
}

.videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.video-item {
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
}

.video-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.video-placeholder {
  height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.video-placeholder i {
  font-size: 60px;
  margin-bottom: 15px;
  opacity: 0.8;
}

.btn-github {
  background: #333;
  color: white;
  font-size: 1.1rem;
  padding: 15px 30px;
}

.btn-github:hover {
  background: #555;
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Contact Section*/
.contact {
  background: var(--bg-secondary);
}

.contact-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.contact-item {
  background: white;
  padding: 40px 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.contact-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.contact-icon {
  font-size: 50px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.contact-details h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.contact-details a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1.1rem;
  transition: var(--transition);
}

.contact-details a:hover {
  color: var(--primary-color);
}

.btn-cv {
  background: var(--accent-color);
  color: white;
  font-size: 1.1rem;
  padding: 15px 30px;
}

.btn-cv:hover {
  background: #0891b2;
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  text-align: center;
  padding: 30px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .about-stats {
    flex-direction: row;
    justify-content: space-around;
  }
  
  .education-card {
    flex-direction: column;
    text-align: center;
  }
  
  .nav-menu {
    display: none;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .videos-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .profile-card {
    width: 250px;
    height: 250px;
  }
  
  .profile-avatar {
    font-size: 80px;
  }
  
  .education-card {
    padding: 30px 20px;
  }
  
  .skill-item {
    padding: 20px;
  }
  
  .contact-item {
    padding: 30px 20px;
  }
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}

/* Loading Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease-out;
}

/* 3D Hover Effects */
.skill-item, .contact-item, .education-card, .stat-item {
  transform-style: preserve-3d;
}

.skill-item:hover, .contact-item:hover, .education-card:hover, .stat-item:hover {
  transform: translateY(-10px) rotateX(5deg);
}

/* Gradient Text Animation */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.name-highlight {
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}