:root {
  --bg:      #0D0D0D;   /* Ana arka plan */
  --surface: #141414;   /* İkincil yüzey */
  --card:    #1A1A1A;   /* Kart arka planı */
  --border:  #2A2A2A;   /* İnce çizgiler */
  --border2: #3A3A3A;   /* Biraz daha belirgin çizgiler */
  --muted:   #666666;   /* Soluk metin */
  --subtle:  #888888;   /* Orta ton metin */
  --body:    #C8C8C8;   /* Gövde metin rengi */
  --heading: #F0F0F0;   /* Başlık rengi */
  --white:   #FFFFFF;   /* Tam beyaz */
}


/* ── GENEL SIFIRLAMA ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--body);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}


/* ── NAV (ÜST MENÜ) ───────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 3rem;
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 0.5px solid var(--border);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--white);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--subtle);
  text-decoration: none;
  transition: color 0.2s;
}

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


/* ── HERO (ANA EKRAN) ─────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 3rem;
  position: relative;
  overflow: hidden;
}

/* Hero'daki küçük etiket metni */
.hero-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.hero-tag span { color: var(--subtle); }

/* Ana büyük başlık */
h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1.5rem;
}

h1 .line2 { color: var(--muted); }

/* Hero açıklama paragrafı */
.hero-desc {
  max-width: 440px;
  color: var(--subtle);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

/* Buton grubu */
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary { background: var(--white); color: var(--bg); }
.btn-primary:hover { background: var(--heading); }

.btn-secondary {
  background: transparent;
  color: var(--body);
  border: 0.5px solid var(--border2);
}
.btn-secondary:hover { border-color: var(--subtle); color: var(--white); }

/* "Aşağı kaydır" yazısı */
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 3rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.scroll-line { width: 40px; height: 0.5px; background: var(--border2); }

/* Arka plan grid deseni */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 0.5px, transparent 0.5px),
    linear-gradient(90deg, var(--border) 0.5px, transparent 0.5px);
  background-size: 60px 60px;
  opacity: 0.18;
  pointer-events: none;
}


/* ── BÖLÜM GENEL STİLLERİ ─────────────────────────────────── */
section {
  padding: 7rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
}

/* "00 — hakkımda" gibi küçük etiketler */
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 0.5px;
  background: var(--border2);
}

/* Bölüm başlıkları (h2) */
h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.025em;
  color: var(--heading);
  line-height: 1.1;
  margin-bottom: 3.5rem;
}


/* ── HAKKIMDA BÖLÜMÜ ──────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-text p { color: var(--body); margin-bottom: 1.25rem; font-size: 1rem; }
.about-text p:last-child { margin-bottom: 0; }

/* İstatistik kartları (1.5 yıl, 12+ proje vb.) */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 0.5px solid var(--border);
}

.stat { background: var(--card); padding: 1.75rem; }

.stat-num {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2.4rem;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.4rem;
  letter-spacing: -0.03em;
}

.stat-label { font-size: 0.78rem; color: var(--muted); letter-spacing: 0.05em; }


/* ── YETENEKLER BÖLÜMÜ ────────────────────────────────────── */
#skills .section-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 0.5px solid var(--border);
  margin-top: 3.5rem;
}

.skill-group { background: var(--card); padding: 1.75rem; }

.skill-group-title {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--heading);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.skill-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }

.skill-list li {
  font-size: 0.85rem;
  color: var(--subtle);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skill-list li::before {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border2);
  flex-shrink: 0;
}


/* ── PROJELER BÖLÜMÜ ──────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 0.5px solid var(--border);
}

.project-card {
  background: var(--card);
  padding: 2rem;
  position: relative;
  display: block;
  cursor: default;
}

.project-empty {
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Proje numarası (01, 02 vb.) */
.project-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}

/* "Yakında eklenecek" yazısı */
.coming-soon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--border2);
  text-transform: lowercase;
}

/* Proje eklendiğinde kullanılacak stiller */
.project-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--heading);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--subtle);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.project-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  padding: 0.25rem 0.6rem;
  background: var(--surface);
  border: 0.5px solid var(--border2);
  color: var(--muted);
  border-radius: 1px;
  letter-spacing: 0.04em;
}


/* ── İLETİŞİM BÖLÜMÜ ─────────────────────────────────────── */
#contact {
  max-width: 100%;
  padding: 7rem 3rem;
  border-top: 0.5px solid var(--border);
}

.contact-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--heading);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.contact-links { display: flex; flex-direction: column; gap: 0; }

.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: 0.5px solid var(--border);
  text-decoration: none;
  color: var(--body);
  transition: color 0.2s;
}

.contact-link:first-child { border-top: 0.5px solid var(--border); }
.contact-link:hover { color: var(--white); }
.contact-link span:first-child { font-size: 0.85rem; letter-spacing: 0.03em; }

.contact-link .arrow {
  font-size: 0.85rem;
  color: var(--border2);
  transition: transform 0.2s, color 0.2s;
}

.contact-link:hover .arrow { transform: translate(4px, -4px); color: var(--subtle); }


/* ── FOOTER ───────────────────────────────────────────────── */
footer {
  border-top: 0.5px solid var(--border);
  padding: 2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

footer p {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}


/* ── YANIP SÖNEN İMLEÇ ────────────────────────────────────── */
.cursor {
  display: inline-block;
  width: 3px;
  height: 0.85em;
  background: var(--white);
  margin-left: 4px;
  vertical-align: middle;
  animation: blink 1s step-start infinite;
}

@keyframes blink { 50% { opacity: 0; } }


/* ── MOBİL UYUM ───────────────────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  #hero, section, #contact { padding-left: 1.5rem; padding-right: 1.5rem; }
  .hero-scroll { left: 1.5rem; }
  .about-grid, .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
  h1 { font-size: 3rem; }
}