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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    text-align: center;
    width: 100%;
    max-width: 600px;
}

.greeting {
    color: #000000;
    font-size: 4rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-shadow: none;
    margin-bottom: 30px;
}

.greeting:hover {
    transform: scale(1.05);
    color: #333333;
}

.greeting:active {
    transform: scale(0.98);
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    animation: fadeIn 0.5s ease;
}

.input-section.hidden {
    display: none;
}

.name-input {
    width: 100%;
    max-width: 400px;
    padding: 15px 20px;
    font-size: 1.2rem;
    border: 2px solid #000000;
    border-radius: 50px;
    outline: none;
    background: #ffffff;
    color: #000000;
    box-shadow: none;
    transition: all 0.3s ease;
}

.name-input:focus {
    border: 2px solid #333333;
    transform: translateY(-2px);
}

.submit-btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: bold;
    color: #ffffff;
    background: #000000;
    border: 2px solid #000000;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: none;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    background: #333333;
    border: 2px solid #333333;
}

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

.welcome-message {
    color: #000000;
    font-size: 2.5rem;
    font-weight: bold;
    text-shadow: none;
    animation: fadeIn 0.5s ease;
    cursor: pointer;
    transition: all 0.3s ease;
}

.welcome-message:hover {
    color: #333333;
    transform: scale(1.05);
}

.welcome-message.hidden {
    display: none;
}

.help-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    animation: fadeIn 0.5s ease;
    width: 100%;
}

.help-section.hidden {
    display: none;
}

.help-input {
    width: 100%;
    max-width: 500px;
    min-height: 150px;
    max-height: 400px;
    padding: 15px 20px;
    font-size: 1.1rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    border: 2px solid #000000;
    border-radius: 20px;
    outline: none;
    background: #ffffff;
    color: #000000;
    resize: none;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.help-input:focus {
    border: 2px solid #333333;
    transform: translateY(-2px);
}

.send-btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: bold;
    color: #ffffff;
    background: #000000;
    border: 2px solid #000000;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: none;
    transition: all 0.3s ease;
}

.send-btn:hover {
    transform: translateY(-2px);
    background: #333333;
    border: 2px solid #333333;
}

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

.response-message {
    color: #000000;
    font-size: 1.5rem;
    font-weight: normal;
    margin-top: 20px;
    animation: fadeIn 0.5s ease;
}

.response-message.hidden {
    display: none;
}

.email-prompt {
    color: #000000;
    font-size: 2.5rem;
    font-weight: bold;
    margin-top: 30px;
    animation: fadeIn 0.5s ease;
    transition: all 0.3s ease;
}

.email-prompt.hidden {
    display: none;
}

.button-section {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
    animation: fadeIn 0.5s ease;
}

.button-section.hidden {
    display: none;
}

.choice-btn {
    padding: 15px 50px;
    font-size: 1.2rem;
    font-weight: bold;
    color: #ffffff;
    background: #000000;
    border: 2px solid #000000;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.choice-btn:hover {
    transform: translateY(-2px);
    background: #333333;
    border: 2px solid #333333;
}

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

.email-request {
    color: #000000;
    font-size: 2.5rem;
    font-weight: bold;
    margin-top: 30px;
    animation: fadeIn 0.5s ease;
    cursor: pointer;
    transition: all 0.3s ease;
}

.email-request:hover {
    color: #333333;
    transform: scale(1.05);
}

.email-request.hidden {
    display: none;
}

.email-input-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    margin-top: 30px;
    animation: fadeIn 0.5s ease;
}

.email-input-section.hidden {
    display: none;
}

.email-input {
    width: 100%;
    max-width: 400px;
    padding: 15px 20px;
    font-size: 1.2rem;
    border: 2px solid #000000;
    border-radius: 50px;
    outline: none;
    background: #ffffff;
    color: #000000;
    box-shadow: none;
    transition: all 0.3s ease;
}

.email-input:focus {
    border: 2px solid #333333;
    transform: translateY(-2px);
}

.submit-email-btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: bold;
    color: #ffffff;
    background: #000000;
    border: 2px solid #000000;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: none;
    transition: all 0.3s ease;
}

.submit-email-btn:hover {
    transform: translateY(-2px);
    background: #333333;
    border: 2px solid #333333;
}

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

.final-message {
    color: #000000;
    font-size: 2rem;
    font-weight: bold;
    margin-top: 30px;
    animation: fadeIn 0.5s ease;
}

.final-message.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .greeting {
        font-size: 2.5rem;
    }

    .name-input {
        font-size: 1rem;
        padding: 12px 18px;
    }

    .submit-btn {
        font-size: 1rem;
        padding: 12px 30px;
    }

    .welcome-message {
        font-size: 1.8rem;
    }

    .help-input {
        font-size: 1rem;
        min-height: 120px;
        max-width: 100%;
    }

    .send-btn {
        font-size: 1rem;
        padding: 12px 30px;
    }

    .response-message {
        font-size: 1.2rem;
    }

    .email-prompt {
        font-size: 1.8rem;
    }

    .choice-btn {
        font-size: 1rem;
        padding: 12px 40px;
    }

    .email-request {
        font-size: 1.8rem;
    }

    .email-input {
        font-size: 1rem;
        padding: 12px 18px;
    }

    .submit-email-btn {
        font-size: 1rem;
        padding: 12px 30px;
    }

    .final-message {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .greeting {
        font-size: 2rem;
    }

    .name-input {
        font-size: 0.95rem;
        padding: 10px 15px;
    }

    .submit-btn {
        font-size: 0.95rem;
        padding: 10px 25px;
    }

    .welcome-message {
        font-size: 1.5rem;
    }

    .help-input {
        font-size: 0.95rem;
        min-height: 100px;
    }

    .send-btn {
        font-size: 0.95rem;
        padding: 10px 25px;
    }

    .response-message {
        font-size: 1rem;
    }

    .email-prompt {
        font-size: 1.5rem;
    }

    .choice-btn {
        font-size: 0.95rem;
        padding: 10px 35px;
    }

    .button-section {
        gap: 15px;
    }

    .email-request {
        font-size: 1.5rem;
    }

    .email-input {
        font-size: 0.95rem;
        padding: 10px 15px;
    }

    .submit-email-btn {
        font-size: 0.95rem;
        padding: 10px 25px;
    }

    .final-message {
        font-size: 1.2rem;
    }
}