:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 50%, #e0e6ff 100%);
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-accent: #3b82f6;
  --white: #ffffff;
  --white-alpha: rgba(255, 255, 255, 0.6);
  --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
  --border-radius: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--primary-gradient);
  z-index: 1000;
  transition: width 0.3s ease;
  width: 0%;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 999;
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--text-accent);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-gradient);
  border-radius: 2px;
}

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.hero-content {
  text-align: center;
  animation: fadeInUp 1s ease-out;
}

.profile-image {
  margin-bottom: 2rem;
}

.profile-placeholder {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  background: var(--primary-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
  animation: float 3s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.name-first {
  background: linear-gradient(135deg, #1f2937 0%, #6b7280 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.name-last {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

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

.info-item a:hover {
  color: var(--text-accent);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--white);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 50px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  font-weight: 500;
}

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

.hero-card {
  max-width: 800px;
  margin: 0 auto 3rem;
  background: var(--white-alpha);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  animation: slideInUp 1s ease-out 0.3s both;
}

.card-content {
  padding: 3rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.separator {
  height: 1px;
  background: linear-gradient(90deg, transparent, #e5e7eb, transparent);
  margin: 2rem 0;
}

.hero-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.expertise-text {
  color: var(--text-secondary);
  line-height: 1.7;
}

.scroll-indicator {
  font-size: 1.5rem;
  color: var(--text-secondary);
  animation: bounce 2s infinite;
}

/* Sections */
.section {
  padding: 80px 0;
}

.alt-bg {
  background: rgba(255, 255, 255, 0.3);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #1f2937 0%, #6b7280 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Cards */
.card {
  background: var(--white-alpha);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
}

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

.card-header {
  padding: 2rem 2rem 1rem;
}

.card-body {
  padding: 0 2rem 2rem;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.card-subtitle {
  color: var(--text-accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.card-date {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Experience Grid */
.experience-grid {
  display: grid;
  gap: 2rem;
}

.experience-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.experience-responsibilities {
  list-style: none;
}

.experience-responsibilities li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.experience-responsibilities li::before {
  content: "★";
  color: var(--text-accent);
  font-size: 0.8rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

/* Education Grid */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
}

.education-item {
  display: flex;
  gap: 1rem;
}

.education-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.education-content {
  flex: 1;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.skill-category h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  text-transform: capitalize;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
  color: var(--text-secondary);
  border-radius: 25px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-tag:hover {
  background: linear-gradient(135deg, #bfdbfe 0%, #c7d2fe 100%);
  transform: translateY(-1px);
}

.additional-skills {
  margin-top: 3rem;
}

.skill-card {
  background: var(--white-alpha);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.skill-card h4 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
}

.skills-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

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

.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-badge {
  padding: 0.4rem 0.8rem;
  background: var(--white);
  border: 2px solid #e0e7ff;
  color: var(--text-accent);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* Activities Grid */
.activities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.activity-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.activity-icon.community {
  background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
}

.activity-icon.workshop {
  background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
}

.activity-icon.teaching {
  background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

/* Awards Grid */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.5rem;
}

.award-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
}

.award-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.award-text {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer */
.footer {
  background: #1f2937;
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.footer-content h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.footer-content p {
  color: #9ca3af;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: #9ca3af;
  text-decoration: none;
  border: 2px solid #374151;
  border-radius: 8px;
  transition: var(--transition);
}

.footer-btn:hover {
  background: #374151;
  color: white;
}

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

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

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

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .nav-menu {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-info {
    flex-direction: column;
    gap: 1rem;
  }

  .social-links {
    flex-direction: column;
    align-items: center;
  }

  .card-content {
    padding: 2rem;
  }

  .experience-header {
    flex-direction: column;
  }

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

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

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

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

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

  .footer-links {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }

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

  .card-header,
  .card-body {
    padding: 1.5rem;
  }
}