/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #f0f0f5;
}

/* Header */
header {
  text-align: center;
  padding: 15px 0;
  background: linear-gradient(90deg, #4CAF50, #2E8B57);
  color: white;
}

/* Navigation */
nav ul.menu {
  display: flex;
  justify-content: center;
  list-style: none;
  flex-wrap: wrap;
  background-color: #333;
}

nav ul.menu li {
  margin: 8px 12px;
}

nav ul.menu li a {
  text-decoration: none;
  color: white;
  padding: 10px 18px;
  display: block;
  border-radius: 8px;
  transition: all 0.3s ease;
}

nav ul.menu li a:hover {
  background-color: #4CAF50;
  transform: scale(1.05);
}

/* Main Hero Section */
.hero {
  text-align: center;
  padding: 40px 20px;
  margin: 20px auto;
  background-color: #e6f2ff;
  border-radius: 10px;
  max-width: 800px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  display: grid;
  gap: 20px;
}

/* Control Box (Session / Word) */
.control-box {
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

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

/* Session form */
.session-form .input-group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.session-form .input-group input[type="text"] {
    width: 120px;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
    text-align: center;
}

/* Word Box */
#word-box {
  margin: 20px 0;
  padding: 15px;
  background-color: #f9f9f9;
  border-radius: 8px;
  border-left: 5px solid #4CAF50;
}

.word-item {
  margin-bottom: 12px;
}

.word-item h3 {
  color: #333;
  margin-bottom: 4px;
}

.word-item p {
  color: #555;
  margin: 0;
}

/* Buttons */
.buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.btn {
  padding: 10px 18px;
  background-color: #4CAF50;
  color: white;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn:hover {
  background-color: #45a049;
  transform: scale(1.05);
}