/* الأساسيات */
body {
  font-family: 'Tahoma', Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #fdfdfd;
  color: #333;
  direction: rtl;
}

h1, h2, h3 {
  text-align: center;
  margin: 15px 0;
}

/* الأزرار */
button {
  border: none;
  border-radius: 12px;
  padding: 10px 15px;
  margin: 5px;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 3px 6px rgba(0,0,0,0.15);
}
button:hover {
  transform: scale(1.05);
  box-shadow: 0 5px 10px rgba(0,0,0,0.25);
}
button:active {
  transform: scale(0.95);
}

/* كروت المواد */
#subjects {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  padding: 10px;
}
.subject-card {
  flex: 1 1 calc(45% - 20px);
  min-width: 120px;
  padding: 15px;
  text-align: center;
  border-radius: 16px;
  font-size: 18px;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: transform 0.2s ease;
}
.subject-card:hover {
  transform: scale(1.05);
}

/* التبويبات */
.tabs {
  display: flex;
  justify-content: space-around;
  margin: 10px 0;
}
.tabs button {
  flex: 1;
  margin: 3px;
  font-size: 14px;
}

/* الملاحظات */
.note-box {
  background: #d4edda;
  color: #155724;
  padding: 10px;
  border-radius: 12px;
  margin: 5px;
  display: inline-block;
  min-width: 100px;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.note-box:hover {
  background: #c3e6cb;
}

/* PDF */
.pdf-box {
  background: #cce5ff;
  color: #004085;
  padding: 10px;
  border-radius: 12px;
  margin: 5px 0;
  cursor: pointer;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.pdf-box:hover {
  background: #b8daff;
}

/* مجلدات الصور */
.folder-box {
  background: #f8d7da;
  color: #721c24;
  padding: 12px;
  border-radius: 14px;
  margin: 5px;
  cursor: pointer;
  text-align: center;
  font-weight: bold;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.folder-box:hover {
  opacity: 0.85;
}

/* الصور */
#imgList {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.thumb {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.3s ease;
}
.thumb:hover {
  transform: scale(1.1);
}
.fullscreen {
  position: fixed !important;
  top: 0; left: 0;
  width: 100vw !important;
  height: 100vh !important;
  object-fit: contain !important;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
}

/* الصوتيات */
.audio-box {
  background: #fff3cd;
  color: #856404;
  padding: 10px;
  border-radius: 12px;
  margin: 5px 0;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.audio-box audio {
  width: 100%;
  margin-top: 5px;
}