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

:root {
  /* Colors */
  --color-bg: #0a0a0a;
  --color-surface: #0f0f0f;
  --color-surface-elevated: #121212;
  --color-border: #2a2a2a;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a3a3a3;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-accent-light: rgba(59, 130, 246, 0.1);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;

  /* Spacing */
  --spacing-unit: 8px;
  --container-max: 1200px;

  /* Transitions */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: var(--transition-base);
}

.nav-logo:hover {
  color: var(--color-accent);
}

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

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition-base);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width 0.3s ease;
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: var(--transition-base);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  /* background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%); */
  background: linear-gradient(180deg, var(--color-bg) 0%, #131313 100%);
}

.hero-content {
  max-width: 800px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-image {
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease;
}

.hero-image img {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid white;
  box-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
  transition: var(--transition-base);
}

.hero-image img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 60px rgba(59, 130, 246, 0.5);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--color-accent);
  margin-bottom: 3rem;
  animation: fadeInUp 0.8s ease 0.2s both;
  text-shadow: 0 0 15px rgba(5, 73, 199, 0.8);

}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-social {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background-color: var(--color-surface-elevated);
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  font-weight: 600;
  transition: var(--transition-base);
}

.social-btn:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.social-btn svg {
  flex-shrink: 0;
}

.hero-scroll {
  position: absolute;
  bottom: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  animation: fadeInUp 0.8s ease 0.8s both, bounce 2s ease infinite;
}

/* Buttons */
.btn {
  padding: 1rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
  display: inline-block;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

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

.btn-secondary:hover {
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
}

/* Section Styles */
.section {
  padding: 6rem 2rem;
  position: relative;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
}

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

.section-label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  text-wrap: balance;
}

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

.about-text {
  max-width: 900px;
  margin: 0 auto;
}

.about-text p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
  text-wrap: pretty;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.stat {
  text-align: center;
  padding: 2rem;
  background-color: var(--color-surface-elevated);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.stat:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 0 25px rgba(5, 73, 199, 0.25);
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}



/* Photography Section */
.projects {
  background-color: var(--color-bg);
}

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

@media (max-width: 480px) {
  .projects-grid {
    grid-template-columns: 1fr;
    /* 1 kolon yap, taşmayı önle */
  }
}

.project-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 350px;
  /* Sabit yükseklik */
}

.project-item img {
  width: 100%;
  height: 100%;
  /* Kartın tamamını kapla */
  object-fit: cover;
  /* Resim kırpılır ama kartı doldurur */
  transition: var(--transition-smooth);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transition: var(--transition-base);
}

.project-item:hover .project-overlay {
  opacity: 1;
}

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

.project-category {
  font-size: 0.875rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.project-description {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}



/* Skills Section */
.skills {
  background-color: var(--color-surface);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

/* Kategori Kutusu Stilleri (Değişmedi) */
.skill-category {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.skill-category:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 25px rgba(5, 73, 199, 0.25);
  transform: translateY(-4px);
}

/* Kategori Başlığı Stili */
.skill-category-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}


.skill-list-simple {
  list-style: none;
  /* Varsayılan madde işaretlerini kaldır */
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  /* Yetenek öğeleri arasındaki dikey boşluk */
}

.skill-name-item {
  font-size: 1rem;
  color: var(--color-text-primary);
  font-weight: 500;
  position: relative;
  padding-left: 1.5rem;
  /* Sahte madde işareti için boşluk */
  line-height: 1.5;
}

.skill-name-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  /* Nokta boyutu */
  height: 8px;
  /* Nokta boyutu */
  background-color: var(--color-accent);
  /* Ana renginiz */
  border-radius: 50%;
}



/* Education Section */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent) 0%, transparent 100%);
}

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}

.timeline-marker {
  position: absolute;
  left: -1.8rem;
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 3px solid var(--color-bg);
  z-index: 1;
}

.timeline-content {
  padding-left: 2rem;
}

.timeline-date {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 12px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.timeline-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.timeline-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

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

/* Contact Section */
.contact {
  background-color: var(--color-surface);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--color-surface-elevated);
  border-radius: 8px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: var(--transition-base);
  border: 1px solid var(--color-border);
}

.contact-method:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.contact-method svg {
  flex-shrink: 0;
}

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

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-surface-elevated);
  border-radius: 8px;
  color: var(--color-text-secondary);
  transition: var(--transition-base);
  border: 1px solid var(--color-border);
}

.social-link:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  transform: translateY(-4px);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
  padding: 1rem;
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: var(--color-surface);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  padding: 2rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* Responsive Design */
@media (max-width: 968px) {
  .nav-links {
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-surface);
    padding: 2rem;
    gap: 1rem;
    transform: translateX(-100%);
    transition: var(--transition-base);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

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

@media (max-width: 768px) {
  .hero {
    padding: 5rem 1.5rem 3rem;
  }

  .hero-image img {
    width: 160px;
    height: 160px;
  }

  .hero-subtitle {
    margin-bottom: 1rem !important;
  }

  .hero-scroll {
    bottom: 0.8rem !important;
  }

  .section {
    padding: 4rem 1.5rem;
  }

  .section-header {
    margin-bottom: 3rem;
  }

  .project-overlay {
    opacity: 1;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .project-btn {
    opacity: 1 !important;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .hero-social {
    flex-direction: column;
    width: 100%;
  }

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

  .hero-image img {
    width: 160px;
    height: 160px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .timeline {
    padding-left: 1.5rem;
  }

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

.education-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.education-column {
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: var(--transition-base);
}

.education-column:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 0 25px rgba(5, 73, 199, 0.25);

}

.education-column .column-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--color-accent);
  text-align: center;
  border-bottom: 2px solid var(--color-accent-light);
  padding-bottom: 0.5rem;
}

/* Timeline görünümünü koru ama sütunlara özel boşluk ekle */
.education-column .timeline {
  padding-left: 1.5rem;
  position: relative;
}

.education-column .timeline::before {
  left: 0;
  background: linear-gradient(180deg, var(--color-accent) 0%, transparent 100%);
}

.project-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: #0862f6;
  color: #fff;
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
  font-size: 0.875rem;
  text-decoration: none;
  opacity: 0.85;
  transition: opacity 0.1s;
}

.project-btn:hover {
  opacity: 1;
}


/* Mobil uyum */
@media (max-width: 900px) {
  .education-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 425px) {
  .hero-scroll span {
    display: none;
  }

  .hero-image {
    margin-bottom: 0;
    margin-top: 2rem;
  }
}