body {
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  background:#fff;      /* Arka plan beyaz */
  color:#000;           /* Yazılar siyah */
}
* { box-sizing:border-box }

/* Menü */
.nav {
  position:fixed;
  top:0; left:0; right:0;
  height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:#f8f8f8;   /* Açık gri menü */
  border-bottom:1px solid #ddd;
  z-index:1000;
}
.nav h1 { margin:0; font-size:18px; color:#333 }
.nav input {
  padding:6px 10px;
  border-radius:6px;
  border:1px solid #ccc;
  background:#fff;
  color:#000;
}
.nav a { color:#333; text-decoration:none; margin-left:10px }

/* Ana içerik */
main { padding-top:70px; max-width:1200px; margin:auto }

/* Slider */
.slider {
  position:relative;
  overflow:hidden;
  border-radius:14px;
  margin:0 10px 10px;
  box-shadow:0 8px 20px rgba(0,0,0,.1);
}
.slides { position:relative; height:400px }
.slide {
  position:absolute; top:0; left:0; width:100%; height:100%;
  display:flex; opacity:0; transform:scale(1.05);
  transition:opacity 1s ease,transform 1s ease;
}
.slide.active { opacity:1; transform:scale(1) }
.slide img { width:55%; object-fit:cover }
.slide .content {
  width:45%; padding:30px;
  display:flex; flex-direction:column; justify-content:center;
  background:#f2f2f2;  /* Açık gri içerik alanı */
}
.slide .content h2 { margin:0 0 10px; font-size:26px; color:#111 }
.slide .content p { margin:0 0 18px; font-size:15px; color:#444 }
.slide .content a {
  padding:10px 16px;
  background:#007bff; color:#fff;
  text-decoration:none; border-radius:6px;
  align-self:flex-start;
}
@media(max-width:768px) {
  .slide{flex-direction:column}
  .slide img{width:100%;height:220px}
  .slide .content{width:100%}
}
.arrow {
  position:absolute; top:50%; transform:translateY(-50%);
  background:rgba(0,0,0,.5);
  border:none; color:#fff; font-size:24px;
  padding:8px; cursor:pointer; z-index:10;
}
.arrow.left{left:10px}
.arrow.right{right:10px}

.thumbnails {
  display:flex; gap:10px; overflow-x:auto;
  padding:10px; margin:0 10px 30px; scroll-behavior:smooth;
}
.thumb { position:relative; flex-shrink:0 }
.thumb img {
  width:120px; height:70px; object-fit:cover;
  border:2px solid transparent; border-radius:8px;
  cursor:pointer; opacity:.6; transition:.3s; display:block;
}
.thumb img.active { border-color:#007bff; opacity:1 }
.thumb .bar {
  position:absolute; bottom:0; left:0; height:4px;
  width:0; background:#007bff;
  border-radius:0 0 6px 6px; transition:none;
}

/* Kartlar */
.grid { display:grid; gap:14px; padding:20px }
@media(min-width:900px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:899px){.grid{grid-template-columns:1fr}}
.card {
  background:#fff; border:1px solid #ddd;
  border-radius:12px; overflow:hidden;
  box-shadow:0 4px 8px rgba(0,0,0,.05);
  display:flex; flex-direction:column;
}
.card img { width:100%; height:160px; object-fit:cover }
.body { padding:12px; flex:1; display:flex; flex-direction:column }
.body h3 { margin:0 0 6px; color:#111 }
.body p { flex:1; margin:0 0 10px; color:#555 }
.body a {
  align-self:flex-start;
  padding:8px 12px;
  background:#007bff; color:#fff;
  text-decoration:none; border-radius:6px;
}

/* Yukarı Çık Butonu */
#toTop {
  position:fixed; bottom:20px; right:20px;
  padding:10px 14px; font-size:18px;
  background:#007bff; color:#fff;
  border:none; border-radius:50%; cursor:pointer;
  display:none; box-shadow:0 4px 12px rgba(0,0,0,.2);
  z-index:2000;
}

/* Yorumlar */
.comments {
  padding:20px; margin-top:30px;
  background:#f8f8f8; border:1px solid #ddd;
  border-radius:12px;
}
.comment {
  background:#fff; border:1px solid #eee;
  padding:12px; border-radius:8px;
  margin-bottom:10px;
}
.comment small { color:#666; display:block; margin-bottom:4px }
.comment strong { color:#007bff }
.comment-form {
  display:flex; flex-direction:column;
  gap:10px; margin-top:15px;
}
.comment-form input,.comment-form textarea {
  padding:8px; border-radius:6px;
  border:1px solid #ccc; background:#fff; color:#000;
}
.comment-form button {
  align-self:flex-start;
  padding:8px 14px;
  background:#007bff; color:#fff;
  border:none; border-radius:6px; cursor:pointer;
}

/* Tema (Dark Mode) */
body.dark {
  background:#0f1115;
  color:#fff;
}
body.dark .nav { background:rgba(15,17,21,.9); border-bottom:1px solid #333; }
body.dark .nav h1, body.dark .nav a { color:#fff; }
body.dark .nav input { background:#111; border:1px solid #333; color:#fff; }
body.dark .slide .content { background:#151923; color:#fff; }
body.dark .card { background:#151923; border:1px solid #232838; color:#fff; }
body.dark .body p { color:#aaa; }
body.dark .comments { background:#151923; border:1px solid #333; }
body.dark .comment { background:#1c212d; border:1px solid #444; }
body.dark footer { background:#151923; color:#aaa; }

/* Tema Butonu */
#themeToggle {
  margin-left:10px;
  padding:6px 10px;
  border:1px solid #ccc;
  border-radius:6px;
  cursor:pointer;
  background:#fff;
}
body.dark #themeToggle { background:#333; border:1px solid #555; color:#fff; }

/* Footer */
footer {
  text-align:center;
  padding:20px;
  background:#f8f8f8;
  border-top:1px solid #ddd;
  margin-top:40px;
}

/* Detay sayfası resim düzeltme */
main img {
  width:100%;
  height:auto;
  border-radius:12px;
  margin-bottom:15px;
  display:block;
}

/* Footer sosyal ikonlar */
footer .social {
  margin-top:10px;
}
footer .social a {
  margin:0 8px;
  font-size:20px;
  color:#007bff;
  text-decoration:none;
}
footer .social a:hover {
  color:#0056b3;
}
body.dark footer .social a { color:#4da3ff; }
body.dark footer .social a:hover { color:#fff; }

/* Menü ve Footer Siyah */
.nav {
  background:#000 !important;
  border-bottom:1px solid #000;
}
.nav h1, .nav a { color:#fff !important; }
.nav input { background:#111; border:1px solid #333; color:#fff; }

footer {
  text-align:center;
  padding:20px;
  background:#000 !important;
  color:#fff !important;
  border-top:1px solid #000;
  margin-top:40px;
}
footer .social a { color:#4da3ff; }
footer .social a:hover { color:#fff; }