body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #0f172a;
  color: #f1f5f9;
}

.container {
  flex: 1;
  display: flex;
  flex-direction: column;
}

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

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background-color: #1e293b;
  color: white;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.4em;
  font-weight: bold;
}

.nav-container {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.nav-links li a {
  color: white;
  font-weight: 500;
}

.nav-links li a.active,
.nav-links li a:hover {
  color: #60a5fa;
}

#darkModeToggle {
  background: none;
  border: none;
  font-size: 1.3em;
  cursor: pointer;
  color: yellow;
  padding: 6px;
  transition: transform 0.2s ease;
}

#darkModeToggle:hover {
  transform: scale(1.1);
}

/* Projeler */
.projects {
  padding: 20px 40px;
  max-width: 1200px;
  margin: auto;
  text-align: center;
}

.projects h1 {
  font-size: 2em;
  color: #3b82f6;
  margin-bottom: 40px;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.card {
  background-color: #1e293b;
  padding: 20px;
  border-radius: 10px;
  width: 300px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  text-align: left;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.card h3 {
  color: #60a5fa;
  font-size: 1.2em;
  margin: 0 0 10px 0;
}

.card p {
  font-size: 0.95em;
  color: #cbd5e1;
  margin-bottom: 10px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.tech-tags span {
  background-color: #334155;
  color: #f1f5f9;
  font-size: 0.75em;
  padding: 4px 8px;
  border-radius: 6px;
}

.links a {
  font-size: 0.9em;
  color: #93c5fd;
  display: inline-block;
  margin-top: 6px;
}

.links a:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  background-color: #1e293b;
  color: #94a3b8;
  font-size: 0.9em;
  margin-top: auto;
}

/* Dark Mode */
body.dark-mode {
  background-color: #f8fafc;
  color: #1e293b;
}

body.dark-mode .navbar {
  background-color: #e2e8f0;
  color: #1e293b;
}

body.dark-mode .nav-links li a {
  color: #1e293b;
}

body.dark-mode .nav-links li a:hover,
body.dark-mode .nav-links li a.active {
  color: #2563eb;
}

body.dark-mode .card {
  background-color: #ffffff;
  color: #1e293b;
}

body.dark-mode .card h3 {
  color: #1e40af;
}

body.dark-mode .card p {
  color: #334155;
}

body.dark-mode .tech-tags span {
  background-color: #cbd5e1;
  color: #1e293b;
}

body.dark-mode .links a {
  color: #2563eb;
}

body.dark-mode footer {
  background-color: #e2e8f0;
  color: #475569;
}

/* Responsive */
@media (max-width: 768px) {
  .cards {
    flex-direction: column;
    align-items: center;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  #darkModeToggle {
    align-self: flex-start;
  }
}

/* ... önceki stiller aynen korunmalı ... */

.category-title {
  font-size: 1.5em;
  color: #38bdf8;
  margin: 40px 0 20px;
  text-align: center;
}

/* Responsive: kategori başlıkları uyumlu */
@media (max-width: 768px) {
  .category-title {
    font-size: 1.3em;
  }
}

.links a.placeholder {
  color: #f87171;
  /* kırmızı ton */
  font-style: italic;
  cursor: not-allowed;
}

.links a.placeholder:hover {
  text-decoration: none;
}