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

/* Body styling */
body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  padding: 20px;
  background: #f0f4f8;
  color: #333;
  transition: background-color 0.6s ease;
  user-select: none;
}

/* Main heading */
h1:first-of-type {
  font-size: 2.2rem;
  font-weight: 700;
  color: #222;
  letter-spacing: 1.2px;
  margin-bottom: 10px;
  text-transform: uppercase;
  text-shadow: 0 1px 2px rgba(0,0,0,0.05);
  transition: color 0.5s ease;
}

/* By Lujaina Ali heading */
h1:last-of-type {
  font-size: 1rem;
  font-weight: 600;
  color: #000;
  font-style: italic;
  margin-top: 25px;
  letter-spacing: 1.1px;
  user-select: none;
  transition: color 0.5s ease;
}

/* Button styling */
button#btn {
  background: linear-gradient(135deg, #0072ff, #00c6ff);
  border: none;
  border-radius: 35px;
  padding: 12px 40px;          /* Chhota kiya padding */
  font-size: 1.1rem;           /* Font size kam kiya */
  font-weight: 700;
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 198, 255, 0.4);  /* Thoda subtle shadow */
  transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  letter-spacing: 1.5px;       /* Letter spacing thoda kam kiya */
  user-select: none;
  text-transform: uppercase;
  font-family: 'Poppins', sans-serif;
}

/* Hover effect */
button#btn:hover {
  background: linear-gradient(135deg, #005fcc, #00aaff);
  box-shadow: 0 6px 18px rgba(0, 160, 255, 0.7);  /* Thoda kam intense */
  transform: scale(1.07);
}

/* Active (pressed) effect */
button#btn:active {
  transform: scale(0.95);
  box-shadow: 0 3px 10px rgba(0, 140, 220, 0.5);
  outline: none;
}

/* Responsive typography */
@media (max-width: 600px) {
  h1:first-of-type {
    font-size: 1.8rem;
  }
  h1:last-of-type {
    font-size: 0.9rem;
    margin-top: 20px;
  }
  button#btn {
    font-size: 1rem;
    padding: 10px 35px;
    letter-spacing: 1.3px;
  }
}

@media (max-width: 380px) {
  h1:first-of-type {
    font-size: 1.5rem;
  }
  h1:last-of-type {
    font-size: 0.8rem;
  }
  button#btn {
    font-size: 0.9rem;
    padding: 8px 30px;
    letter-spacing: 1.1px;
  }
}