@font-face {
  font-family: 'dik-temel-harfler';
  src: url('dik-temel-harfler.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}
html, body {
  font-family: 'dik-temel-harfler', sans-serif;
}
    .hud { display:flex; gap:10px; align-items:center; justify-content:space-between; margin-bottom:10px }
    .stat { font-weight:900; color: var(--muted); }
    .duo { display:grid; grid-template-columns: repeat(2, minmax(120px, 1fr)); gap:16px; justify-items:center; align-items:start; }
    .tile { position:relative; width:120px; height:140px; background:var(--card); border:3px dashed rgba(99,102,241,.25); border-radius:16px; padding:8px; box-shadow:var(--shadow); cursor:pointer; display:flex; flex-direction:column; align-items:center; justify-content:flex-start; transition:transform .08s ease, box-shadow .12s ease, opacity .12s ease, filter .12s ease; }
    .tile:hover{ transform: translateY(-2px); box-shadow: 0 10px 22px rgba(31,41,55,.16), 0 3px 8px rgba(31,41,55,.08); }
    .tile:active{ transform: translateY(0); }
    .tile img{ width:100px; height:100px; object-fit:contain; display:block; }
    .tile figcaption{ text-align:center; font-weight:900; margin-top:6px; font-size:.95rem }
    .tile.done{ opacity:.65; filter: grayscale(.1); }
    .tile.done::after{ content:"✔"; position:absolute; right:6px; bottom:6px; font-size:18px; color: var(--primary-2); text-shadow: 0 1px 0 white; }
    .disabled { pointer-events:none; filter: grayscale(.2); }
a.back {
  display: inline-block;
  padding: 10px 18px;
  background-color: #007BFF; /* mavi buton */
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

a.back:hover {
  background-color: #0056b3; /* hover rengi */
}