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

html, body {
    height: 100%;
    overflow-x: hidden;
}
header{
    background-image: linear-gradient(rgba(0,0,0,0.5),rgba(0,0,0,0.5)),url(bg.avif);
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport height for mobile */
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.hero{
    color: #fff;
    text-align: center;
    width: 100%;
    max-width: 800px;
    padding: 20px;
    margin-top: 80px;
}
h1{
    font-size: 60px;
    letter-spacing: 15px;
}
hr{
    width: 50%;
    margin: 30px auto;
    border: 1.5px solid #fff;
}
p{
    font-size: 20px;
    margin-bottom: 30px;
}

#launch{
    font-size: 40px;
    word-spacing: 20px ;
}

/* Email Signup Styles */
.email-signup{
    margin-top: 50px;
    text-align: center;
}

.email-signup h3{
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: 300;
    letter-spacing: 2px;
    opacity: 0.95;
}

.signup-form{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

#emailInput, input[name="name"]{
    padding: 15px 20px;
    font-size: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background-color: rgba(255,255,255,0.1);
    color: #fff;
    min-width: 300px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

#emailInput::placeholder, input[name="name"]::placeholder{
    color: rgba(255,255,255,0.7);
}

#emailInput:focus, input[name="name"]:focus{
    outline: none;
    border-color: #ff6b35;
    background-color: rgba(255,255,255,0.15);
    box-shadow: 0 0 20px rgba(255,107,53,0.3);
}

.signup-btn{
    padding: 15px 30px;
    font-size: 16px;
    font-weight: bold;
    background: linear-gradient(135deg, #ff6b35, #e55a2b);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(255,107,53,0.3);
}

.signup-btn:hover{
    background: linear-gradient(135deg, #e55a2b, #d14a1a);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,107,53,0.4);
}

.signup-btn:active{
    transform: translateY(0);
}

.signup-message{
    font-size: 16px;
    margin-top: 15px;
    min-height: 20px;
    transition: all 0.3s ease;
}

.signup-message.success{
    color: #4CAF50;
    font-weight: bold;
}

.signup-message.error{
    color: #f44336;
    font-weight: bold;
}


/* Responsive Design */
@media (max-width: 768px) {
    .hero{
        margin-top: 0;
    }
    h1{
        font-size: 40px;
        letter-spacing: 8px;
        margin-bottom: 20px;
    }
    
    hr{
        width: 70%;
        margin: 20px auto;
    }
    
    p{
        font-size: 16px;
        margin-bottom: 25px;
    }
    
    #launch{
        font-size: 28px;
        word-spacing: 10px;
        margin-bottom: 30px;
    }
    
    .email-signup{
        margin-top: 30px;
    }
    
    .email-signup h3{
        font-size: 18px;
        margin-bottom: 20px;
        letter-spacing: 1px;
    }
    
    .signup-form{
        flex-direction: column;
        gap: 15px;
    }
    
    #emailInput, input[name="name"]{
        min-width: 280px;
        width: 100%;
        max-width: 350px;
        padding: 12px 16px;
        font-size: 14px;
    }
    
    .signup-btn{
        width: 100%;
        max-width: 350px;
        padding: 12px 24px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .hero{
        padding: 15px;
    }
    
    h1{
        font-size: 32px;
        letter-spacing: 5px;
        margin-bottom: 15px;
    }
    
    hr{
        width: 80%;
        margin: 15px auto;
    }
    
    p{
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    #launch{
        font-size: 24px;
        word-spacing: 8px;
        margin-bottom: 25px;
    }
    
    .email-signup h3{
        font-size: 16px;
        margin-bottom: 15px;
    }
    
    #emailInput, input[name="name"]{
        min-width: 250px;
        padding: 10px 14px;
        font-size: 13px;
    }
    
    .signup-btn{
        padding: 10px 20px;
        font-size: 13px;
    }
}

@media (max-width: 320px) {
    .hero{
        padding: 10px;
    }
    
    h1{
        font-size: 28px;
        letter-spacing: 3px;
    }
    
    #launch{
        font-size: 20px;
        word-spacing: 5px;
    }
    
    #emailInput, input[name="name"]{
        min-width: 220px;
        padding: 8px 12px;
        font-size: 12px;
    }
    
    .signup-btn{
        padding: 8px 16px;
        font-size: 12px;
    }
}