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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #000000;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 800px;
    text-align: center;
}

.content {
    animation: fadeIn 1s ease-in;
}

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

.title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    color: #b0b0b0;
    margin-bottom: 3rem;
    letter-spacing: 0.01em;
}

.signup-form {
    margin-top: 3rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.email-input {
    background-color: #1a1a1a;
    border: 1px solid #333333;
    color: #ffffff;
    font-size: 1rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
    outline: none;
}

.email-input:focus {
    border-color: #555555;
    background-color: #222222;
}

.email-input::placeholder {
    color: #666666;
}

.submit-btn {
    background-color: #ffffff;
    color: #000000;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 1rem 2rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
    letter-spacing: 0.01em;
}

.submit-btn:hover {
    background-color: #e0e0e0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

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

.form-message {
    margin-top: 1rem;
    font-size: 0.9rem;
    min-height: 24px;
    color: #888888;
}

.form-message.success {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 400;
    line-height: 1.6;
    margin-top: 1.5rem;
}

.form-message.error {
    color: #f87171;
}

@media (min-width: 640px) {
    .form-group {
        flex-direction: row;
    }
    
    .email-input {
        flex: 1;
    }
    
    .submit-btn {
        white-space: nowrap;
    }
}