/* CSS Variables */
:root {
  --primary: #8b5cf6;
  --primary-light: #a78bfa;
  --primary-dark: #7c3aed;
  --secondary: #f3f4f6;
  --background: #ffffff;
  --foreground: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card: #ffffff;
  --card-border: #f3f4f6;
  --gradient-start: #8b5cf6;
  --gradient-mid: #a855f7;
  --gradient-end: #ec4899;
  --purple: #8b5cf6;
  --violet: #a855f7;
  --pink: #ec4899;
  --blue: #3b82f6;
  --green: #22c55e;
  --yellow: #eab308;
  --orange: #f97316;
}

.dark {
  --primary: #a78bfa;
  --primary-light: #c4b5fd;
  --primary-dark: #8b5cf6;
  --secondary: #374151;
  --background: #0f172a;
  --foreground: #f8fafc;
  --muted: #94a3b8;
  --border: #334155;
  --card: #1e293b;
  --card-border: #334155;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}

.dark .navbar {
  background: rgba(15, 23, 42, 0.8);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
}

.nav-links a {
  padding: 0.5rem 1rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.375rem;
  transition: all 0.2s;
}

.nav-links a:hover {
  color: var(--foreground);
  background: var(--secondary);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--foreground);
  transition: background 0.2s;
}

.theme-toggle:hover {
  background: var(--secondary);
}

.theme-toggle .moon-icon {
  display: none;
}

.dark .theme-toggle .sun-icon {
  display: none;
}

.dark .theme-toggle .moon-icon {
  display: block;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05), transparent, rgba(168, 85, 247, 0.1));
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 20%;
  width: 400px;
  height: 400px;
  background: rgba(139, 92, 246, 0.15);
  border-radius: 50%;
  filter: blur(80px);
  animation: pulse 4s ease-in-out infinite;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 20%;
  right: 20%;
  width: 300px;
  height: 300px;
  background: rgba(168, 85, 247, 0.15);
  border-radius: 50%;
  filter: blur(80px);
  animation: pulse 4s ease-in-out infinite 1s;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

.floating-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: rgba(139, 92, 246, 0.2);
  border-radius: 50%;
  animation: float 10s linear infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(0) translateX(20px); }
  75% { transform: translateY(20px) translateX(10px); }
}

.hero-content {
  position: relative;
  text-align: center;
  padding: 2rem;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.highlight {
  color: var(--primary);
  font-weight: 600;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  animation: bounce 2s ease-in-out infinite;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 0.5rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(139, 92, 246, 0.5);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--foreground);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
}

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

.badge-secondary {
  background: var(--secondary);
  color: var(--foreground);
}

.badge-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}

/* Section Styles */
section {
  padding: 6rem 0;
}

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

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin: 1rem 0;
}

.section-description {
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto;
}

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

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

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-text {
  color: var(--muted);
  margin-bottom: 1rem;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.about-tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--foreground);
}

.about-tag svg {
  color: var(--primary);
}

.stats-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

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

.stat-item {
  text-align: center;
  padding: 1rem;
  border-radius: 0.75rem;
  background: rgba(139, 92, 246, 0.05);
  transition: transform 0.2s;
}

.stat-item:hover {
  transform: scale(1.05);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.stat-value.purple { color: var(--purple); }
.stat-value.violet { color: var(--violet); }
.stat-value.pink { color: var(--pink); }
.stat-value.blue { color: var(--blue); }

.stat-label {
  font-size: 0.875rem;
  color: var(--muted);
}

/* Skills Section */
.skills {
  background: rgba(139, 92, 246, 0.02);
}

.dark .skills {
  background: rgba(139, 92, 246, 0.05);
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .skills-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.skills-category-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--foreground);
}

.skills-category-title svg {
  color: var(--primary);
}

.skill-bars {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.skill-bar-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
}

.skill-name {
  font-weight: 500;
}

.skill-percent {
  color: var(--muted);
}

.skill-bar {
  height: 8px;
  background: var(--secondary);
  border-radius: 9999px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--violet));
  border-radius: 9999px;
  width: 0;
  animation: fillBar 1s ease-out forwards;
}

@keyframes fillBar {
  to { width: var(--progress); }
}

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

.soft-skill-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.soft-skill-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

.soft-skill-card svg {
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.soft-skill-card h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.soft-skill-card p {
  font-size: 0.75rem;
  color: var(--muted);
}

/* Education Section */
.education {
  background: var(--background);
}

.education-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.education-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--violet));
}

.education-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.education-icon svg {
  color: white;
}

.education-content {
  flex: 1;
}

.education-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.education-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.education-specialization {
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.education-institution {
  color: var(--muted);
  margin-bottom: 1rem;
}

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

.education-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--foreground);
}

.education-meta-item svg {
  color: var(--primary);
}

/* Projects Section */
.projects {
  background: rgba(139, 92, 246, 0.02);
}

.dark .projects {
  background: rgba(139, 92, 246, 0.05);
}

.project-card {
  max-width: 900px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .project-card {
    grid-template-columns: 1fr 1fr;
  }
}

.project-visual {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(168, 85, 247, 0.2));
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.project-icon-wrapper {
  width: 128px;
  height: 128px;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  border-radius: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 40px -10px rgba(139, 92, 246, 0.4);
  animation: float 6s ease-in-out infinite;
}

.project-icon-wrapper svg {
  color: white;
}

.project-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 1rem 0;
}

.project-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.project-features li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.75rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.project-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-badge {
  padding: 0.25rem 0.75rem;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Certifications Section */
.certifications {
  background: var(--background);
}

.certifications-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .certifications-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.certification-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.certification-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

.certification-icon {
  width: 56px;
  height: 56px;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.certification-icon.yellow {
  background: linear-gradient(135deg, #eab308, #ca8a04);
  color: white;
}

.certification-icon.orange {
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: white;
}

.certification-content h4 {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.certification-content p {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

/* Contact Section */
.contact {
  background: rgba(139, 92, 246, 0.02);
}

.dark .contact {
  background: rgba(139, 92, 246, 0.05);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 2rem;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

.contact-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.contact-icon.purple {
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: white;
}

.contact-icon.green {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
}

.contact-icon.blue {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
}

.contact-card h4 {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.contact-card a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  word-break: break-all;
  transition: color 0.2s;
}

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

.contact-cta {
  text-align: center;
  margin-top: 3rem;
}

/* Footer */
.footer {
  background: var(--card);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 640px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-content p {
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: var(--muted);
  transition: color 0.2s;
}

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

/* Animations */
.animate-fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-left {
  opacity: 0;
  transform: translateX(-60px);
  animation: slideLeft 0.6s ease-out forwards;
}

.animate-slide-right {
  opacity: 0;
  transform: translateX(60px);
  animation: slideRight 0.6s ease-out forwards;
}

.animate-scale {
  opacity: 0;
  transform: scale(0.9);
  animation: scaleIn 0.5s ease-out forwards;
}

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

@keyframes slideLeft {
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideRight {
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  to { opacity: 1; transform: scale(1); }
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .education-card {
    flex-direction: column;
    text-align: center;
  }
  
  .education-icon {
    margin: 0 auto;
  }
  
  .education-header {
    justify-content: center;
  }
  
  .education-meta {
    justify-content: center;
  }
}