/* General Reset & Background */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box; 
} 

/*what is box sizing?*/

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9fdfc;
  color: #333; 
  line-height: 1.6; /*what is line height?*/
}

/* Centering and Padding */
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 30px 20px;
}

/* Headings */
h1 {
  text-align: center;
  color: #007bff;
  margin-bottom: 10px;
}

h2 {
  color: #333;
  margin-bottom: 10px;
}

/* Quote Styling */
blockquote {
  background-color: #e6f0ff;
  padding: 15px 20px;
  border-left: 5px solid #007bff;
  border-radius: 7px;
  margin: 15px 0 30px;
}

blockquote p {
  font-style: italic;
  font-size: 1.1rem;
}

blockquote footer { /* what is this combining of css selectors called ?*/
  text-align: right;
  font-size: 0.9rem;
  color: #555;
  margin-top: 8px;
}

/* Goals Section */
.goals ul {
  list-style-type: none;
  padding-left: 0;
  margin-bottom: 30px;
} /*I dont understand this section ?*/

.goal {
  background-color: #fff;
  padding: 10px 15px;
  border: 1px solid #cce5ff;
  border-radius: 6px;
  margin-bottom: 10px;
  box-shadow: 1px 2px 5px rgba(0, 0, 0, 0.05); /*dont understand this line*/
}

/* Timer Section */
.timer-section {
  text-align: center;
  background-color: #f2f7ff;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1); /*dont undersand this line*/
}

.timer-box {
  font-size: 48px;
  font-weight: bold;
  color: #333;
  margin: 20px 0;
  padding: 15px;
  background-color: white;
  border: 3px solid #007bff;
  border-radius: 10px;
}

/* Button Styling */
.start-btn {
  background-color: #007bff;
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer; /*what is that*/
  transition: background-color 0.3s ease; /*what is that*/
}

.start-btn:hover {
  background-color: #0056b3;
}
/* dont understand the .start-btn:hover section*/
/* Footer */
.footer {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9rem;
  color: #777;
}