/* --- Reset & Genel Ayarlar --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: rgb(22, 22, 22);
  color: rgb(224, 211, 173);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  max-width: 1400px;
  margin: 0 auto;
  /* padding: 40px 20px; */
}

/* --- Başlık Animasyonu --- */
.site-header {
  width: 100%;
  height: 155px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(22, 22, 22);
  border-bottom: 1px solid #30363d;
  position: relative;
  overflow: hidden;
}
.bb-logo {
  display: flex;
  align-items: center;
  gap: 20px;
  font-weight: bold;
}
.bb-wrap {
  position: relative;
  width: 80px;
  height: 60px;
}
.b-top,
.b-bottom {
  position: absolute;
  font-size: 60px;
  opacity: 0;
  color: white;
}
.b-top {
  top: -100px;
  left: 0;
  animation: dropB 1s forwards;
}
.b-bottom {
  bottom: -100px;
  left: 30px;
  animation: riseB 1s forwards 1s;
}
.yazilim {
  display: block;
  font-size: 48px;
  margin-top: 21px;
  letter-spacing: 2px;
  font-weight: 600;
  opacity: 0;
  animation: slideY 2s forwards 1s;
  color: white;
}
@keyframes dropB {
  to {
    top: 0;
    opacity: 1;
  }
}
@keyframes riseB {
  to {
    bottom: 0;
    opacity: 1;
  }
}
@keyframes slideY {
  to {
    opacity: 1;
    transform: translateX(-27px);
  }
}

/* --- Sayfa Linkleri --- */
nav {
  display: flex;
  justify-content: space-around;
  padding: 22px;
  margin-top: 15px;
  font-size: 25px;
  font-weight: 600;
  color: rgb(224, 211, 173);
}
nav a {
  position: relative;
  text-decoration: none;
  color: rgb(224, 211, 173);
}
nav a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: -5px;
  left: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  background-color: rgb(224, 211, 173);
}
nav a:hover::after {
  transform: scaleX(1);
}

/* --- Proje Kartları --- */
.projects-grid {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 60px;
}
.project-card {
  background-color: #272727;
  border: 1px solid rgb(27, 27, 27);
  border-radius: 20px;
  padding: 30px 20px;
  width: 300px;
  text-align: center;
  opacity: 0;
  animation: fadeInUp 0.8s forwards;
}
.project-card:nth-child(1) {
  animation-delay: 0.5s;
}
.project-card:nth-child(2) {
  animation-delay: 0.8s;
}
.project-card h2 {
  margin-bottom: 15px;
  font-size: 1.5rem;
  color: white;
}
.project-card p {
  line-height: 1.6;
  color: rgb(224, 211, 173);
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Buton Stili --- */
.project-btn {
  display: inline-block;
  margin-top: 18px;
  padding: 10px 28px;
  background: #00bcd4;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s;
}
.project-btn:hover {
  background: #0097a7;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .projects-grid {
    flex-direction: column;

    align-items: center;
    margin-bottom: 40px;
  }
  .projects-nav {
    display: flex;
    text-align: center;
    flex-direction: column;
    gap: 10px;
  }
}