@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

hr {
  background-color: #5ab9bc;
  height: 1px;
  border: #5ab9bc;
  margin: 0;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background-image: linear-gradient(
    to bottom,
    #19417d,
    #006095,
    #007ea7,
    #269cb3
  );
  background-repeat: no-repeat;
  background-attachment: fixed;
}

a {
  text-decoration: none;
  color: white;
}

li {
  list-style: none;
}

.navbar {
  max-width: 1200px;
  margin: 0 auto;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
}

.navbar ul {
  display: flex;
  gap: 30px;
}

.navbar a:hover {
  color: #71e7ea;
  transform: scale(1.05) translateY(-2px);
}

.navbar a {
  display: inline-block;
  transition: 0.3s ease;
}

/* Karşılama Ekranı */

.first {
  height: calc(100vh - 101px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  padding: 0 20px;
}

.first-content h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.first-content h1 span {
  color: #71e7ea;
}

.first-content p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 30px;
  opacity: 0.9;
}

.first-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.btn-primary,
.btn-secondary {
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 500;
  transition: 0.3s ease;
}

.btn-primary {
  background-color: #71e7ea;
  color: #19417d;
}

.btn-primary:hover {
  background-color: white;
  transform: translateY(-3px);
}

.btn-secondary {
  border: 2px solid white;
}

.btn-secondary:hover {
  background-color: white;
  color: #19417d;
  transform: translateY(-3px);
}

.animation {
  opacity: 0;
  transform: translateY(40px);
  animation: fadeUp 0.8s ease forwards;
  animation-delay: 0.2s;
}

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

/* Hakkımda Sayfası */

.about-container {
  height: calc(100vh - 106px);
  margin-top: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.about-content {
  background: rgba(255, 255, 255, 0.1);
  padding: 40px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  max-width: 650px;
  color: white;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-text h2 {
  color: #71e7ea;
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.about-text p {
  line-height: 1.6;
  font-size: 1.1rem;
  margin-bottom: 30px;
}

.skills h3 {
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.skills ul {
  display: flex;
  justify-content: center;
  gap: 15px;
  list-style: none;
}

.skills li {
  background: #71e7ea;
  color: #19417d;
  padding: 8px 25px;
  border-radius: 50px;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.9rem;
  box-shadow: 0 4px 15px rgba(113, 231, 234, 0.3);
}

.social-media {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.social-media h3 {
  color: #71e7ea;
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 25px;
}

.social-icons a {
  color: white;
  font-size: 35px;
  transition: 0.25s ease;
}

.social-icons a:hover {
  color: #71e7ea;
  transform: translateY(-5px) scale(1.2);
  text-shadow: 0 0 15px rgba(113, 231, 234, 0.5);
}

/* Projelerim Sayfası */

.projects-container {
  padding: 40px 10%;
  color: white;
  text-align: center;
  min-height: calc(100vh - 102px);
}

.section-title {
  margin-bottom: 30px;
  font-size: 2.2rem;
  color: #71e7ea;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.project-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 20px;
  backdrop-filter: blur(5px);
  transition: 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: #71e7ea;
  background: rgba(255, 255, 255, 0.12);
}

.project-card h3 {
  color: #71e7ea;
  margin-bottom: 10px;
  font-size: 1.4rem;
}

.project-card p {
  font-size: 0.9rem;
  line-height: 1.4;
  margin-bottom: 15px;
  opacity: 0.9;
}

.project-tags {
  margin-bottom: 20px;
}

.project-tags span {
  font-size: 0.75rem;
  background: rgba(113, 231, 234, 0.2);
  color: #71e7ea;
  padding: 3px 10px;
  border-radius: 15px;
  border: 1px solid #71e7ea;
}

.project-btn {
  text-decoration: none;
  color: #19417d;
  background: #71e7ea;
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: 0.3s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-btn:hover {
  background: white;
  transform: scale(1.05);
}

.filter-buttons {
  margin-bottom: 30px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid #71e7ea;
  background: transparent;
  color: #71e7ea;
  border-radius: 20px;
  cursor: pointer;
  transition: 0.3s;
}

.filter-btn.active, .filter-btn:hover {
  background: #71e7ea;
  color: #19417d;
}

.hide {
  display: none !important;
}

/* Footer */

footer {
  width: 100%;
  padding: 20px 0;
  background: rgba(0, 0, 0, 0.2);
  color: white;
  text-align: center;
  font-size: 0.85rem;
  margin-top: auto;
  border-top: 1px solid rgba(113, 231, 234, 0.2);
  backdrop-filter: blur(5px);
}

footer p {
  margin: 5px 0;
  opacity: 0.8;
}

footer span {
  color: #71e7ea;
  font-weight: 600;
}