/* RESET & TEMEL */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: #000;
  color: #e0e0e0;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* HEADER */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #333;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: #fff;
}

.logo {
  width: 40px;
  height: 40px;
  background: radial-gradient(circle at 30% 30%, #8b5cf6, #5a67d8);
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(90, 103, 216, 0.5);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: #ccc;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
  color: #5a67d8;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
}

.btn-primary {
  background: linear-gradient(135deg, #5a67d8, #4c51bf);
  color: white;
  box-shadow: 0 4px 15px rgba(90, 103, 216, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(90, 103, 216, 0.5);
}

.btn-ghost {
  border: 1px solid #5a67d8;
  color: #5a67d8;
}

.btn-ghost:hover {
  background: #5a67d8;
  color: white;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

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

.hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #8b5cf6, #5a67d8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1.2rem;
  color: #aaa;
  margin-bottom: 2rem;
}

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

/* SECTIONS */
.section {
  padding: 4rem 0;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  color: #5a67d8;
  text-align: center;
  margin-bottom: 2rem;
}

.card {
  background: rgba(26, 26, 26, 0.9);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid #333;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.manifesto-card p {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

/* PROJELER */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.project-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 1rem;
}

.card h3 {
  color: #5a67d8;
  margin: 1rem 0 0.5rem;
}

/* FOOTER */
.site-footer {
  background: #111;
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: #666;
  border-top: 1px solid #333;
}

/* STARFIELD */
#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* MOBİL BUTONLAR - EN ALTTA, SABİT DEĞİL */
.mobile-bottom-nav {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  width: 90%;
  max-width: 400px;
  margin: 3rem auto 2rem;
  padding: 1rem;
  background: rgba(26, 26, 26, 0.95);
  border-radius: 24px;
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.nav-row {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.4rem;
}

.nav-btn {
  min-width: 78px;
  padding: 0.65rem 0.4rem;
  background: linear-gradient(135deg, #5a67d8, #4c51bf);
  color: white;
  text-decoration: none;
  border-radius: 16px;
  font-size: 0.72rem;
  font-weight: 600;
  text-align: center;
  transition: all 0.25s ease;
  box-shadow: 0 3px 10px rgba(90, 103, 216, 0.4);
}

.nav-btn:hover, .nav-btn.active {
  background: linear-gradient(135deg, #4c51bf, #434190);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(90, 103, 216, 0.5);
}

/* MOBİL */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    flex-direction: column;
    padding: 1rem 0;
    display: none;
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-bottom-nav {
    display: flex;
  }
  .hero-title {
    font-size: 2.5rem;
  }
}