:root {
--primary: #000000;
  --primary-light: #1f2937;
  --secondary: #374151;
  --dark: #111827;
  --light: #f9fafb;
  --gray: #6b7280;
  --dark-gray: #4b5563;
  --shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 12px 22px rgba(0, 0, 0, 0.18);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light);
  scroll-behavior: smooth;
}

header {
  background: linear-gradient(135deg, #bfdbfe, #dbeafe);
  padding: 3rem 0 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.profile-img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid white;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.profile-img:hover {
  transform: scale(1.05);
}

h1 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-size: 2.5rem;
  font-weight: 700;
}

.tagline {
  font-size: 1.25rem;
  color: var(--dark-gray);
  font-weight: 500;
}

section {
  padding: 4rem 0;
}

h2 {
  color: var(--primary);
  margin-bottom: 2.5rem;
  font-size: 2rem;
  text-align: center;
  position: relative;
}

h2::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--secondary);
  border-radius: 2px;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--dark);
}

.skills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.skill {
  background-color: white;
  padding: 0.7rem 1.4rem;
  border-radius: 30px;
  color: var(--primary);
  font-weight: 600;
  border: 1px solid #a5b4fc;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.skill:hover {
  background-color: var(--primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}

.project-card {
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
  background: white;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.project-img {
  height: 200px;
  background-color: #bfdbfe;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: var(--transition);
}

.project-card:hover .project-img img {
  transform: scale(1.05);
}

.project-info {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-details {
  margin-bottom: 1.5rem;
}

.project-details h3 {
  color: var(--dark);
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

.project-details p {
  color: var(--dark-gray);
  font-size: 1rem;
  line-height: 1.6;
}

.download-container {
  margin-top: auto;
  text-align: center;
}

.kişisel-apk, .ruhsal-apk, .yesil_sepet, .kimhaklı {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  border-radius: 30px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  margin-top: 1rem;
}

.kişisel-apk {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
}

.ruhsal-apk {
  background: linear-gradient(135deg, var(--secondary), #22d3ee);
  color: white;
}

.yesil_sepet {
  background: linear-gradient(135deg, #7c3aed, #a78bfa);
  color: white;
}
.kimhaklı {
    background: linear-gradient(135deg, #3aed99, #8b9bfa);
    color: white;
}
.kişisel-apk:hover, .ruhsal-apk:hover, .yesil_sepet:hover ,.kimhaklı:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

footer {
  background-color: var(--dark);
  color: white;
  text-align: center;
  padding: 2.5rem 0;
  margin-top: 3rem;
}

footer p {
  margin-bottom: 0.5rem;
}

footer a {
  color: var(--light);
  text-decoration: none;
  transition: var(--transition);
}

footer a:hover {
  color: var(--secondary);
}
.social-icons {
    margin-top: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-icon {
    color: #ffffff;
    background-color: #333;
    padding: 10px;
    border-radius: 50%;
    font-size: 18px;
    text-decoration: none;
    transition: background-color 0.3s, transform 0.3s;
}

.social-icon:hover {
    transform: scale(1.1);
}

.social-icon.instagram {
    background-color: #E1306C;
}

.social-icon.linkedin {
    background-color: #0077B5;
}

.social-icon.github {
    background-color: #24292e;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

section {
  animation: fadeIn 0.8s ease forwards;
}

@media (max-width: 768px) {
  .projects {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .tagline {
    font-size: 1.1rem;
  }
  
  section {
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.5rem;
  }
  
  .skill {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
  
  .project-card {
    border-radius: 8px;
  }
}