* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #ffd6e8, #fff3b0);
    font-family: Arial, "Microsoft YaHei", sans-serif;
    overflow: hidden;
}

.container {
    text-align: center;
    background: rgba(255,255,255,0.85);
    padding: 40px;
    border-radius: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.cake {
    font-size: 80px;
}

h1 {
    color: #ff4081;
    font-size: 36px;
}

.message {
    color: #555;
    font-size: 20px;
    line-height: 1.8;
}

button {
    border: none;
    padding: 14px 28px;
    border-radius: 30px;
    background: #ff4081;
    color: white;
    font-size: 18px;
    cursor: pointer;
}

button:hover {
    opacity: 0.85;
}

#wish {
    margin-top: 20px;
    color: #e91e63;
    font-size: 22px;
    font-weight: bold;
}

.stars {
    position: fixed;
    top: 20px;
    font-size: 30px;
}