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

:root {
  --bg-primary: #0b0c15; 
  --bg-secondary: #161822;
  --bg-card: rgba(255, 255, 255, 0.03); 
  
  --accent-cyan: #64ffda; 
  --accent-purple: #bd93f9;
  
  --text-primary: #ccd6f6; 
  --text-secondary: #8892b0; 
  --text-soft: #a8b2d1; 
  
  --border: rgba(255, 255, 255, 0.1); 
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* --- NETWORK CANVAS --- */
#network-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: radial-gradient(circle at center, #111425 0%, #0b0c15 100%);
  pointer-events: none;
}

/* --- CURSOR GLOW --- */
#cursorGlow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(100, 255, 218, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: screen;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}

/* DİL BUTONU */
.lang-toggle {
  position: fixed;
  top: 25px;
  right: 25px;
  z-index: 1000;
  background: rgba(11, 12, 21, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.lang-toggle:hover {
  background: rgba(100, 255, 218, 0.1);
  box-shadow: 0 0 15px rgba(100, 255, 218, 0.2);
}

/* HERO SECTION - SOLA YASLI */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Hero Content Flex Yapısı */
.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem; /* Yazı ve resim arası boşluk */
}

/* Sol taraf: Yazılar */
.hero-text {
  flex: 1;
  text-align: left;
}

/* Sağ taraf: Fotoğraf */
.hero-image {
  flex: 0 0 auto;
}

/* --- PROFİL FOTOĞRAFI (DİKDÖRTGEN) --- */
.profile-pic {
  width: 320px; /* Genişlik */
  height: auto; /* Oran bozulmasın diye auto */
  border-radius: 20px; /* Hafif yuvarlak köşeli dikdörtgen */
  object-fit: cover;
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 30px rgba(100, 255, 218, 0.2); /* Neon glow */
  animation: floatImage 5s ease-in-out infinite; /* Yavaşça süzülme */
  display: block;
}

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

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.typewriter {
  font-size: clamp(1.2rem, 3vw, 2rem);
  color: var(--accent-cyan);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 2.5rem;
  font-weight: 500;
  min-height: 2.8rem;
}

.cursor {
  display: inline-block;
  width: 10px;
  height: 4px;
  background: var(--accent-cyan);
  animation: blink 1s infinite;
  margin-left: 5px;
  vertical-align: middle;
}

@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }

/* BUTTONS */
.cta-buttons {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: flex-start;
  margin-top: 1rem;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  font-size: 0.9rem;
}

.btn-primary {
  background: transparent;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}
.btn-primary:hover {
  background: rgba(100, 255, 218, 0.1);
  transform: translateY(-3px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--text-secondary);
}
.btn-secondary:hover {
  border-color: var(--text-primary);
  background: rgba(255,255,255,0.05);
  transform: translateY(-3px);
}

/* SCROLL ARROW */
.scroll-arrow {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  cursor: pointer;
}
.scroll-arrow span {
  display: block;
  width: 20px;
  height: 20px;
  border-bottom: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
  transform: rotate(45deg);
  margin: -10px;
  animation: scrollAnimate 2s infinite;
}
.scroll-arrow span:nth-child(2) { animation-delay: -0.2s; }
.scroll-arrow span:nth-child(3) { animation-delay: -0.4s; }

@keyframes scrollAnimate {
  0% { opacity: 0; transform: rotate(45deg) translate(-20px, -20px); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: rotate(45deg) translate(20px, 20px); }
}

/* SECTIONS */
section { padding: 8rem 0; opacity: 0; transform: translateY(40px); transition: all 1s cubic-bezier(0.645, 0.045, 0.355, 1); }
section.visible, section.hero { opacity: 1; transform: translateY(0); }

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 3rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
}
.section-title::after {
  content: "";
  display: block;
  width: 200px;
  height: 1px;
  background: var(--bg-card);
  background: rgba(255,255,255,0.1);
}

/* CARDS */
.about-content, .project-card, .contact-box-styled {
  background: rgba(17, 34, 64, 0.4);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
  text-align: left;
}

.about-content p { color: var(--text-secondary); margin-bottom: 1.2rem; font-size: 1.1rem; }
.about-content strong { color: var(--accent-cyan); }

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
}

.skill-tag {
  font-family: 'JetBrains Mono', monospace;
  padding: 0.6rem 1.2rem;
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  border-radius: 4px;
  font-size: 0.85rem;
  cursor: default;
  transition: 0.3s;
}
.skill-tag:hover { background: rgba(100, 255, 218, 0.1); transform: translateY(-3px); }

/* PROJE KARTLARI */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

a.card-link { text-decoration: none; display: block; height: 100%; color: inherit; }

.project-card:hover, .contact-box-styled:hover {
  transform: translateY(-7px);
  border-color: var(--accent-cyan);
  background: rgba(17, 34, 64, 0.8);
}

.project-card h3 { 
  font-size: 1.5rem; 
  margin-bottom: 1rem; 
  color: var(--text-primary); 
  transition: color 0.3s;
}
.project-card:hover h3 { color: var(--accent-cyan); }

.project-card p { color: var(--text-secondary); margin-bottom: 1.5rem; font-size: 1rem; }

.project-tags { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: auto; }
.project-tag { 
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem; 
  color: var(--text-secondary);
}

/* CONTACT SECTION - KUTU STİLİ */
.contact-box-styled {
  max-width: 600px; 
  margin: 0 auto; 
  text-align: center;
  position: relative;
  z-index: 10;
}

.contact-email-btn {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: 'JetBrains Mono', monospace;
  padding: 1rem 2rem;
  border: 1px solid var(--accent-cyan);
  border-radius: 4px;
  transition: all 0.3s ease;
  background: transparent;
  text-decoration: none;
  margin-bottom: 2rem;
  word-break: break-all;
  position: relative;
  z-index: 100;
  cursor: pointer;
}

.contact-email-btn:hover {
  background: rgba(100, 255, 218, 0.1);
  box-shadow: 0 5px 20px rgba(100, 255, 218, 0.15);
  transform: translateY(-3px);
}

.social-links { display: flex; justify-content: center; gap: 2rem; }
.social-link { 
  width: auto; height: auto; border: none; background: none; 
  color: var(--text-secondary); transition: 0.3s; padding: 10px;
  position: relative;
  z-index: 100;
  cursor: pointer;
}
.social-link:hover { color: var(--accent-cyan); transform: translateY(-5px); }

footer { text-align: center; padding: 2rem 0; color: var(--text-secondary); font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; }

/* MOBİL UYUMLULUK */
@media (max-width: 768px) {
  .hero-content {
    flex-direction: column-reverse; /* Mobilde resim üste, yazı alta */
    text-align: center;
    gap: 2rem;
  }
  .hero-text { text-align: center; }
  .cta-buttons { justify-content: center; }
  .section-title { justify-content: center; }
  .about-content, .contact-box-styled { text-align: center; }
  .skills-grid { justify-content: center; }
  
  .hero h1 { font-size: 2.5rem; }
  .profile-pic { width: 100%; max-width: 280px; } /* Mobilde boyut ayarı */
  .lang-toggle { top: 20px; right: 20px; }
  .contact-email-btn { font-size: 1rem; padding: 0.8rem; }
}