.main-page{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #424d62;
    min-height: 100vh;
    text-align: center;
    padding: 20px;
}
h1{
    color: #ffffff;
    text-shadow: 2px 2px 4px #000000;
    margin-bottom: 20px;
}
h2{
    color: #ffffff;
    margin-top: 30px;
}
h3{
    color: #ffffff;
    margin-top: 20px;
}
button {
    padding: 10px 16px;
    margin: 6px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    background: #4a7dff;
    color: white;
    font-weight: bold;
    box-shadow: 0 4px 6px #000000;
    transition: transform 0.2s, box-shadow 0.2s;
}
button:hover {
    opacity: 0.85;
    transform: translateY(-2px);
    box-shadow: 0 6px 8px #000000;
}
.big{
    font-size: 18px;
    padding: 15px 30px;
    background: #ff6b6b;
    transition: transform 0.1s ease;
}
a {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    color: white;
    background: #4a7dff;
    padding: 10px 16px;
    border-radius: 8px;
}
#bubble{
    width: 100px;
    height: 100px;
    background: #75a9fc;
    border-radius: 50%;
    margin: 20px auto;
    transition: width 2s ease, height 2s ease;
}
#breathText{
    font-size: 18px;
    margin-top: 10px;
    font-weight: bold;
}
#affirmationText{
    font-size: 16px;
    margin-top: 10px;
    font-style: italic;
    color: #4a7dff;
    min-height: 30px;
}
.mood-btn{
    transition: all 0.3s ease;
}
.calm-mode{
    background: #202035;
    color: #ffffff;
}
#countdown{
    display: none;
    font-size: 48px;
    font-weight: bold;
    color: #4a7dff;
    margin: 20px 0;
}