/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette */
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --background-dark: #0f172a;
  --background-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--background-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh; /* Ekran yüksekliği kadar minimum yükseklik */
  display: flex; /* Esnek kutu modelini etkinleştir */
  flex-direction: column; /* Öğeleri dikey olarak (alt alta) sırala */
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Main Content */
.main-content {
  flex: 1;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo .logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

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

.nav-link:hover {
  color: var(--text-primary);
}

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

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

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

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--spacing-3xl) var(--spacing-lg);
  padding-top: 100px; /* Navbar yüksekliği kadar boşluk bırak */
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/hero_background.png') center/cover;
  opacity: 0.3;
  z-index: -1;
}

.hero-background::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0.1;
}

.hero-content {
  color: var(--text-secondary);
  max-width: 800px;
  z-index: 1;
}

.profile-container {
  margin-bottom: var(--spacing-2xl);
}

.profile-photo-wrapper {
  position: relative;
  display: inline-block;
}

.profile-photo {
  width: 400px;
  height: 400px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid transparent;
  background: var(--gradient-primary);
  padding: 4px;
  transition: var(--transition-normal);
}


.profile-photo:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.profile-glow {
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  background: var(--gradient-primary);
  border-radius: 50%;
  opacity: 0.3;
  filter: blur(20px);
  z-index: -1;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.05); }
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

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

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

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-lg);
}

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

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

.btn-secondary:hover {
  border-color: var(--primary-color);
  background: rgba(99, 102, 241, 0.1);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border: 2px solid var(--text-secondary);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

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

/* Section Styles */
.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
}

/* Education Section */
.education-card {
  background: var(--background-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  max-width: 600px;
  margin: 0 auto;
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.education-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  color: white;
  flex-shrink: 0;
}

.education-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.education-year {
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.education-school {
  color: var(--text-secondary);
}

/* Skills Section */
.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.skill-badge {
  display: inline-block;
  background: var(--background-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  transition: var(--transition-normal);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.skill-badge:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* Experience Section */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  height: 100%;
  width: 2px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-3xl);
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-date {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  white-space: nowrap;
}

.timeline-content {
  width: calc(50% - 40px);
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-right: 80px;
  text-align: left;
}

.timeline-item:nth-child(odd) .timeline-image {
  margin-left: 80px;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: 80px;
}

.experience-card {
  background: var(--background-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  min-height: 200px;
}

.experience-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.experience-header h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
}

.experience-logo img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.experience-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
  line-height: 1.7;
  font-weight: 500;
}

.experience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tag {
  background: rgba(139, 92, 246, 0.1);
  color: var(--secondary-color);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-full);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
}

/* Projects Section - DÜZELTME */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.project-card {
  background: var(--background-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  width: 100%;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.project-image {
  height: 200px;
  background-color: var(--background-card);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

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

.project-img:hover {
  transform: scale(1.05);
}

.project-placeholder {
  font-size: var(--font-size-4xl);
  color: white;
  opacity: 0.8;
}

.project-content {
  padding: var(--spacing-xl);
}

.project-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.project-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.tech-tag {
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-color);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-full);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: var(--spacing-md);
}

.project-link {
  color: var(--text-secondary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  transition: var(--transition-normal);
}

.project-link:hover {
  color: var(--primary-color);
}

/* Contact Section */
.contact-section {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.contact-description {
  color: var(--text-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-3xl);
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

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

.contact-details h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  text-align: center;
}

  .contact-details p {
  color: var(--text-secondary);
  text-align: center;
}


.contact-form {
  background: var(--background-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--background-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: var(--transition-normal);
}

.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-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

/* Footer */
.footer {
  background: var(--background-card);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-left p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.footer-right {
  display: flex;
  align-items: center;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 45px;
  height: 45px;
  background: var(--background-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-normal);
  font-size: var(--font-size-lg);
}

.social-link:hover {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.timeline-image {
  width: calc(50% - 40px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.timeline-image img {
  width: 100%;
  max-width: 450px;
  height: auto;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease;
}

/* Arvis görseli solda, yazı sağda */
.timeline-item.arvis-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: row-reverse;
}

.timeline-image.arvis-image {
  width: calc(50% - 40px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.timeline-image.arvis-image img {
  max-width: 450px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

/* Loop görseli solda, yazı sağda */
.timeline-item.loop-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: row-reverse;
}

.timeline-image.loop-image {
  width: calc(50% - 40px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.timeline-image.loop-image img {
  max-width: 00px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}




/* Responsive Design */
@media (max-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    flex-direction: column !important;
    align-items: flex-start;
    padding-left: 50px;
  }
  
  .timeline-date {
    position: static;
    transform: none;
    margin-bottom: var(--spacing-md);
    align-self: flex-start;
  }
  
  .timeline-content {
    width: 100%;
    margin: 0 !important;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .footer-left p {
    margin-bottom: var(--spacing-md);
  }
  
  .social-links {
    justify-content: center;
  }
  
  .projects-grid {
    grid-template-columns: 1fr !important;
    gap: var(--spacing-lg);
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }
  
  .profile-photo {
    width: 150px;
    height: 150px;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
}

/* Isolated Tooltip for douloop.com */
.tooltip-douloop {
  position: relative;
  display: inline-block;
}

.tooltip-douloop .tooltip-text {
  visibility: hidden;
  opacity: 0;
  background-color: var(--background-card);
  color: var(--text-primary);
  font-size: 1.125rem; /* 18px */
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: 9999;
}

.tooltip-douloop:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* Tooltip for LinkedIn link */
.tooltip-linkedin {
  position: relative;
  display: inline-block;
}

.tooltip-linkedin .tooltip-text-linkedin {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--background-card);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: var(--font-size-base); /* büyütülmüş */
  white-space: nowrap;
  z-index: 9999;
  box-shadow: var(--shadow-lg);
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.tooltip-linkedin:hover .tooltip-text-linkedin {
  visibility: visible;
  opacity: 1;
}

/* Kırmızı yazı stili isteğe bağlı */
.linkedin-link {
  color: var(--accent-color); /* veya örnek: #0e76a8 → LinkedIn mavisi */
  font-weight: 500;
  text-decoration: none;
}

.linkedin-link:hover {
  text-decoration: underline;
  color: #0e76a8;
}

/* Tooltip for GitHub link */
.tooltip-github {
  position: relative;
  display: inline-block;
}

.tooltip-github .tooltip-text-github {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--background-card);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: var(--font-size-base);
  white-space: nowrap;
  z-index: 9999;
  box-shadow: var(--shadow-lg);
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.tooltip-github:hover .tooltip-text-github {
  visibility: visible;
  opacity: 1;
}

/* GitHub link stili */
.github-link {
  color: var(--accent-color); /* İstersen: #f4f4f4 ya da beyaz da olabilir */
  font-weight: 500;
  text-decoration: none;
}

.github-link:hover {
  text-decoration: underline;
  color: #ffffff;
}



.timeline-item:first-child .timeline-date {
  margin-top: 0;
}

.timeline-item:last-child .timeline-date {
  margin-bottom: 0;
}

.timeline-item:first-child .timeline-content {
  padding-top: 0;
}

.timeline-item:last-child .timeline-content {
  padding-bottom: 0;
}

.timeline-item:first-child {
  margin-top: 0;
}

.timeline-item:last-child {
  margin-bottom: 0;
}




.timeline-item:first-child .timeline-date {
  margin-top: 0;
}

.timeline-item:last-child .timeline-date {
  margin-bottom: 0;
}

.timeline-item:first-child .timeline-content {
  padding-top: 0;
}

.timeline-item:last-child .timeline-content {
  padding-bottom: 0;
}

.timeline-item:first-child {
  margin-top: 0;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline::before {
  top: 0;
  height: 100%;
}



 



.section-title {
  text-align: center;
}




.hero-content {
  text-align: center;
}

.profile-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
}








.timeline-image img {
  border-radius: 50%;
  object-fit: cover;
}



.timeline-item:nth-child(odd) .timeline-image img,
.timeline-item:nth-child(even) .timeline-image img {
  border-radius: 50%;
  object-fit: cover;
}



.timeline-image img {
  border-radius: 50%;
  object-fit: cover;
}


/* Timeline Image Styles */
.timeline-image {
  width: calc(50% - 40px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-image img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.timeline-image img:hover {
  transform: scale(1.05);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-xl);
}

/* Arvis ve Shell özel stilleri */
.arvis-image img,
.shell-image img {
  border-radius: var(--radius-lg) !important;
}

/* Shell görseli için özel dörtgen stil */
.shell-image img {
  border-radius: var(--radius-md) !important;
  border: 3px solid var(--accent-color);
}

.shell-image img {
  width: 100%;
  max-width: 500px;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md) !important;
  border: 3px solid var(--accent-color);
}

.arvis-image img {
  width: 100%;
  max-width: 500px; /* Genişliğini büyütüyoruz */
  height: auto;     /* Yükseklik orana göre ayarlanır */
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  object-fit: cover; /* Şekli korur, boşluk bırakmaz */
}


/* ================================================================ */
/* TIMELINE GÖRSEL TAŞMA SORUNU İÇİN NİHAİ DÜZENLEME KODU */
/* ================================================================ */

/* 1. Ana taşıyıcı olan .timeline-item'ı esnek hale getiriyoruz. */
.timeline-item {
  display: flex;         /* İçindeki öğeleri esnek bir şekilde hizala */
  align-items: center;   /* Dikey olarak ortala */
  width: 100%;           /* Tüm genişliği kapla */
}

/* 2. Yazı ve görsel sütunlarının genişliğini ayarlıyoruz. */
/* Yazı alanı (.timeline-content) %45 genişlik alsın */
.timeline-item .timeline-content {
  width: 35%;
  flex-shrink: 0; /* Küçülmeye zorlanmasın */
}

/* Görsel alanı (.timeline-image) %55 genişlik alsın */
.timeline-item .timeline-image {
  width: 65%;
  flex-shrink: 0; /* Bu da küçülmeye zorlanmasın */
  padding: 0 40px; /* Görselin kenarlarına biraz boşluk ver */
}

/* 3. Görselin kendisinin bu yeni alana tam sığmasını sağlıyoruz. */
.timeline-item .timeline-image img {
  width: 100%;       /* Kapsayıcısının %100'ü kadar genişle */
  max-width: 100%;   /* Kapsayıcısından daha büyük olamasın */
  height: auto;      /* Oranı koru */
}

/* 4. Ters yöndeki (sağdaki) item için de aynı ayarları yapıyoruz. */
.timeline-item:nth-child(even) {
  flex-direction: row-reverse; /* Sıralamayı ters çevir (görsel solda, yazı sağda) */
}


/* ================================================================ */
/* TIMELINE GÖRSEL TAŞMA SORUNU İÇİN NİHAİ DÜZENLEME KODU */
/* ================================================================ */

/* 1. Ana taşıyıcı olan .timeline-item'ı esnek hale getiriyoruz. */
.timeline-item {
  display: flex;
  align-items: center;
  width: 100%;
}

/* 2. Yazı ve görsel sütunlarının genişliğini ayarlıyoruz. */
.timeline-item .timeline-content {
  width: 35%;
  flex-shrink: 0;
}

.timeline-item .timeline-image {
  width: 65%;
  flex-shrink: 0;
  padding: 0 20px;
}

/* 3. Görselin kendisinin bu yeni alana tam sığmasını sağlıyoruz. */
.timeline-item .timeline-image img {
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* 4. Ters yöndeki (sağdaki) item için de aynı ayarları yapıyoruz. */
.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

/* YENİ EKLENECEK KOD BURADA */
/* 5. Arvis görselinin (sağdaki) yazı alanına boşluk ekleyerek çizgiden uzaklaştırıyoruz. */
.timeline-item:nth-child(even) .timeline-content {
  margin-right: 40px; /* Yazı alanını soldan iterek görseli sağa kaydır */
}


/* Loop görseli için küçültme */
.timeline-image.loop-image img {
  max-width: 300px; /* Genişliği 350px'den 200px'e düşürüldü */
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

/* Sadece "Mühendis Beyinler" görselini küçültmek için CSS kodu */
.timeline-image img[src="images/muhendisbeyinler.jpeg"] {
  width: 300px;  /* İstediğiniz genişlik */
  height: 300px; /* İstediğiniz yükseklik */
  object-fit: cover; /* Resmin oranını koruyarak sığdırır */
}

.experience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;                    /* Etiketler arasında boşluk */
  justify-content: center;     /* Ortala! */
  align-items: center;
  padding-top: 12px;
}

.tag {
  padding: 6px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
}